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Kahnert K, Soattin L, Mills RW, Wilson C, Maurya S, Sorrentino A, Al-Othman S, Tikhomirov R, van de Vegte YJ, Hansen FB, Achter J, Hu W, Zi M, Smith M, van der Harst P, Olesen MS, Olsen KB, Banner J, Jensen THL, Zhang H, Boyett MR, D'Souza A, Lundby A. Proteomics couples electrical remodelling to inflammation in a murine model of heart failure with sinus node dysfunction. Cardiovasc Res 2024:cvae054. [PMID: 38661182 DOI: 10.1093/cvr/cvae054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 12/22/2023] [Accepted: 01/08/2024] [Indexed: 04/26/2024] Open
Abstract
AIMS In patients with heart failure (HF), concomitant sinus node dysfunction (SND) is an important predictor of mortality, yet its molecular underpinnings are poorly understood. Using proteomics, this study aimed to dissect the protein and phosphorylation remodelling within the sinus node in an animal model of HF with concurrent SND. METHODS AND RESULTS We acquired deep sinus node proteomes and phosphoproteomes in mice with heart failure and SND and report extensive remodelling. Intersecting the measured (phospho)proteome changes with human genomics pharmacovigilance data, highlighted downregulated proteins involved in electrical activity such as the pacemaker ion channel, Hcn4. We confirmed the importance of ion channel downregulation for sinus node physiology using computer modelling. Guided by the proteomics data, we hypothesized that an inflammatory response may drive the electrophysiological remodeling underlying SND in heart failure. In support of this, experimentally induced inflammation downregulated Hcn4 and slowed pacemaking in the isolated sinus node. From the proteomics data we identified proinflammatory cytokine-like protein galectin-3 as a potential target to mitigate the effect. Indeed, in vivo suppression of galectin-3 in the animal model of heart failure prevented SND. CONCLUSION Collectively, we outline the protein and phosphorylation remodeling of SND in heart failure, we highlight a role for inflammation in electrophysiological remodelling of the sinus node, and we present galectin-3 signalling as a target to ameliorate SND in heart failure.
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Affiliation(s)
- Konstantin Kahnert
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Luca Soattin
- Division of Cardiovascular Sciences, University of Manchester, Core Technology Facility, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Robert W Mills
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Claire Wilson
- Division of Cardiovascular Sciences, University of Manchester, Core Technology Facility, 46 Grafton Street, Manchester, M13 9NT, UK
- Institute of Systems, Molecular & Integrative Biology, University of Liverpool, Liverpool, UK
| | - Svetlana Maurya
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Andrea Sorrentino
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Sami Al-Othman
- Division of Cardiovascular Sciences, University of Manchester, Core Technology Facility, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Roman Tikhomirov
- Division of Cardiovascular Sciences, University of Manchester, Core Technology Facility, 46 Grafton Street, Manchester, M13 9NT, UK
- National Heart and Lung Institute, Imperial College London, Imperial Centre for Translational and Experimental Medicine (ICTEM), 72 Du Cane Road, London W12 0NN, UK
| | - Yordi J van de Vegte
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Finn B Hansen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Jonathan Achter
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Wei Hu
- Department of Physics & Astronomy, Biological Physics Group, University of Manchester, Manchester, UK
| | - Min Zi
- Division of Cardiovascular Sciences, University of Manchester, Core Technology Facility, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Matthew Smith
- Division of Cardiovascular Sciences, University of Manchester, Core Technology Facility, 46 Grafton Street, Manchester, M13 9NT, UK
- National Heart and Lung Institute, Imperial College London, Imperial Centre for Translational and Experimental Medicine (ICTEM), 72 Du Cane Road, London W12 0NN, UK
| | - Pim van der Harst
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
- Department of Cardiology, University Medical Center Utrecht, Utrecht, the Netherlands
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
- Durrer Center for Cardiogenetic Research, Netherlands Heart Institute, Utrecht, the Netherlands
| | - Morten S Olesen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Kristine Boisen Olsen
- Department of Forensic Medicine, University of Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Jytte Banner
- Department of Forensic Medicine, University of Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | | | - Henggui Zhang
- Department of Physics & Astronomy, Biological Physics Group, University of Manchester, Manchester, UK
| | - Mark R Boyett
- Faculty of Life Sciences, University of Bradford, Bradford, UK
| | - Alicia D'Souza
- Division of Cardiovascular Sciences, University of Manchester, Core Technology Facility, 46 Grafton Street, Manchester, M13 9NT, UK
- National Heart and Lung Institute, Imperial College London, Imperial Centre for Translational and Experimental Medicine (ICTEM), 72 Du Cane Road, London W12 0NN, UK
| | - Alicia Lundby
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
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Maurya S, Mills RW, Kahnert K, Chiang DY, Bertoli G, Lundegaard PR, Duran MPH, Zhang M, Rothenberg E, George AL, MacRae CA, Delmar M, Lundby A. Outlining cardiac ion channel protein interactors and their signature in the human electrocardiogram. Nat Cardiovasc Res 2023; 2:673-692. [PMID: 38666184 PMCID: PMC11041666 DOI: 10.1038/s44161-023-00294-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 05/31/2023] [Indexed: 04/28/2024]
Abstract
Protein-protein interactions are essential for normal cellular processes and signaling events. Defining these interaction networks is therefore crucial for understanding complex cellular functions and interpretation of disease-associated gene variants. We need to build a comprehensive picture of the interactions, their affinities and interdependencies in the specific organ to decipher hitherto poorly understood signaling mechanisms through ion channels. Here we report the experimental identification of the ensemble of protein interactors for 13 types of ion channels in murine cardiac tissue. Of these, we validated the functional importance of ten interactors on cardiac electrophysiology through genetic knockouts in zebrafish, gene silencing in mice, super-resolution microscopy and patch clamp experiments. Furthermore, we establish a computational framework to reconstruct human cardiomyocyte ion channel networks from deep proteome mapping of human heart tissue and human heart single-cell gene expression data. Finally, we integrate the ion channel interactome with human population genetics data to identify proteins that influence the electrocardiogram (ECG). We demonstrate that the combined channel network is enriched for proteins influencing the ECG, with 44% of the network proteins significantly associated with an ECG phenotype. Altogether, we define interactomes of 13 major cardiac ion channels, contextualize their relevance to human electrophysiology and validate functional roles of ten interactors, including two regulators of the sodium current (epsin-2 and gelsolin). Overall, our data provide a roadmap for our understanding of the molecular machinery that regulates cardiac electrophysiology.
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Affiliation(s)
- Svetlana Maurya
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Robert W. Mills
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Konstantin Kahnert
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - David Y. Chiang
- Cardiovascular Medicine Division, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA USA
| | - Giorgia Bertoli
- Division of Cardiology, NYU School of Medicine, New York, NY USA
| | - Pia R. Lundegaard
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | - Mingliang Zhang
- Division of Cardiology, NYU School of Medicine, New York, NY USA
| | - Eli Rothenberg
- Division of Pharmacology, NYU School of Medicine, New York, NY USA
| | - Alfred L. George
- Department of Pharmacology, Northwestern University Feinberg School of Medicine, Chicago, IL USA
| | - Calum A. MacRae
- Cardiovascular Medicine Division, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA USA
| | - Mario Delmar
- Division of Cardiology, NYU School of Medicine, New York, NY USA
| | - Alicia Lundby
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- The Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Paludan-Muller C, Vad OB, Kahnert K, Ahlberg G, Monfort LM, Rand SA, Trudsoe LC, Andreasen L, Christensen AH, Bundgaard H, Lundby A, Svendsen JH, Olesen MS. Loss-of-function variants in founder population highlight atrial myopathy as susceptibility to atrial fibrillation. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Atrial fibrillation (AF) is the most common cardiac arrhythmia, and it's associated with genes responsible for cardiac conduction, cardiogenesis, and cardiac structure. The Finnish population has evolved in relative isolation and undergone several bottlenecks, resulting in enrichment of deleterious variants. This facilitates identification of possible causal genes through protein-truncating variants that likely would not have been identified in other populations.
Purpose
To identify novel genetic associations with large effect on AF risk.
Methods
We accessed publicly available summary statistics on AF (ICD-10 code I48) from the FinnGen project R6, containing 28,670 AF cases and 135,821 controls. Then, we annotated all variants in the summary statistics and extracted variants that were predicted with a high effect impact (n=7,113). To account for multiple testing, a false discovery rate cutoff <10% was applied. The UK Biobank was assessed for comparison of allele frequencies. Afterwards, we investigated protein and single-cell RNA expression of the genes of interest in human atrial tissue. Human atrial tissue was obtained by us from 7 individuals and used for mass spectrometry-based proteomics, while single-nucleus RNA sequencing (snRNAseq) data from human hearts was acquired by Tucker [1].
Results
In a genome-wide association study (GWAS) focusing on loss-of function (LOF) variation, we report two LOF variants in the structural genes SYNPO2L and CTNNA3 with much higher allele frequencies compared to non-Finnish Europeans (85-fold and 80-fold enrichment, respectively). The variants increase the risk of AF considerably, which is emphasized as the two variants show the highest effect sizes of all GWAS variants ever associated with AF (SYNPO2L; odds ratio [OR] = 2.79, P-value = 1.32x10–8 and CTNNA3; OR = 2.43, P-value = 9.40x10–7), exceeding that of most clinical risk factors. We accessed phenome-wide association study (PheWAS) results on both variants. There was no association with other phenotypes for the SYNPO2L variant whereas the CTNNA3 variant showed suggestive association with valvular heart disease (P-value = 2.95x10–5). SYNPO2L and CTNNA3 exhibited high protein and RNA expression levels in atrial tissue and were predominantly expressed in cardiomyocytes (Fig. 1).
Conclusion
We identified novel associations between LOF variation in the structural genes SYNPO2L and CTNNA3 and AF. Our study showed how genetic examination of a European subpopulation facilitates discovery of genetic variants and pathophysiological understanding. The results underline the importance of thoroughly investigating subpopulations as unique variants with large effect sizes can be identified.
Funding Acknowledgement
Type of funding sources: Public hospital(s). Main funding source(s): This work was supported by the Research Foundation at Rigshospitalet and the Hallas-Møller Emerging Investigator Novo Nordisk.
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Affiliation(s)
- C Paludan-Muller
- Rigshospitalet - Copenhagen University Hospital, Department of Cardiology , Copenhagen , Denmark
| | - O B Vad
- Rigshospitalet - Copenhagen University Hospital, Department of Cardiology , Copenhagen , Denmark
| | - K Kahnert
- Rigshospitalet - Copenhagen University Hospital, Department of Cardiology , Copenhagen , Denmark
| | - G Ahlberg
- University of Copenhagen, Department of Biomedical Sciences , Copenhagen , Denmark
| | - L M Monfort
- Rigshospitalet - Copenhagen University Hospital, Department of Cardiology , Copenhagen , Denmark
| | - S A Rand
- Rigshospitalet - Copenhagen University Hospital, Department of Cardiology , Copenhagen , Denmark
| | - L C Trudsoe
- University of Copenhagen, Department of Biomedical Sciences , Copenhagen , Denmark
| | - L Andreasen
- Rigshospitalet - Copenhagen University Hospital, Department of Cardiology , Copenhagen , Denmark
| | - A H Christensen
- Rigshospitalet - Copenhagen University Hospital, Department of Cardiology , Copenhagen , Denmark
| | - H Bundgaard
- Rigshospitalet - Copenhagen University Hospital, Department of Cardiology , Copenhagen , Denmark
| | - A Lundby
- University of Copenhagen, Department of Biomedical Sciences , Copenhagen , Denmark
| | - J H Svendsen
- Rigshospitalet - Copenhagen University Hospital, Department of Cardiology , Copenhagen , Denmark
| | - M S Olesen
- Rigshospitalet - Copenhagen University Hospital, Department of Cardiology , Copenhagen , Denmark
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4
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Pérez-Hernández M, van Opbergen CJM, Bagwan N, Vissing CR, Marrón-Liñares GM, Zhang M, Torres Vega E, Sorrentino A, Drici L, Sulek K, Zhai R, Hansen FB, Christensen AH, Boesgaard S, Gustafsson F, Rossing K, Small EM, Davies MJ, Rothenberg E, Sato PY, Cerrone M, Jensen THL, Qvortrup K, Bundgaard H, Delmar M, Lundby A. Loss of Nuclear Envelope Integrity and Increased Oxidant Production Cause DNA Damage in Adult Hearts Deficient in PKP2: A Molecular Substrate of ARVC. Circulation 2022; 146:851-867. [PMID: 35959657 PMCID: PMC9474627 DOI: 10.1161/circulationaha.122.060454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 06/30/2022] [Indexed: 01/24/2023]
Abstract
BACKGROUND Arrhythmogenic right ventricular cardiomyopathy (ARVC) is characterized by high propensity to life-threatening arrhythmias and progressive loss of heart muscle. More than 40% of reported genetic variants linked to ARVC reside in the PKP2 gene, which encodes the PKP2 protein (plakophilin-2). METHODS We describe a comprehensive characterization of the ARVC molecular landscape as determined by high-resolution mass spectrometry, RNA sequencing, and transmission electron microscopy of right ventricular biopsy samples obtained from patients with ARVC with PKP2 mutations and left ventricular ejection fraction >45%. Samples from healthy relatives served as controls. The observations led to experimental work using multiple imaging and biochemical techniques in mice with a cardiac-specific deletion of Pkp2 studied at a time of preserved left ventricular ejection fraction and in human induced pluripotent stem cell-derived PKP2-deficient myocytes. RESULTS Samples from patients with ARVC present a loss of nuclear envelope integrity, molecular signatures indicative of increased DNA damage, and a deficit in transcripts coding for proteins in the electron transport chain. Mice with a cardiac-specific deletion of Pkp2 also present a loss of nuclear envelope integrity, which leads to DNA damage and subsequent excess oxidant production (O2.- and H2O2), the latter increased further under mechanical stress (isoproterenol or exercise). Increased oxidant production and DNA damage is recapitulated in human induced pluripotent stem cell-derived PKP2-deficient myocytes. Furthermore, PKP2-deficient cells release H2O2 into the extracellular environment, causing DNA damage and increased oxidant production in neighboring myocytes in a paracrine manner. Treatment with honokiol increases SIRT3 (mitochondrial nicotinamide adenine dinucleotide-dependent protein deacetylase sirtuin-3) activity, reduces oxidant levels and DNA damage in vitro and in vivo, reduces collagen abundance in the right ventricular free wall, and has a protective effect on right ventricular function. CONCLUSIONS Loss of nuclear envelope integrity and subsequent DNA damage is a key substrate in the molecular pathology of ARVC. We show transcriptional downregulation of proteins of the electron transcript chain as an early event in the molecular pathophysiology of the disease (before loss of left ventricular ejection fraction <45%), which associates with increased oxidant production (O2.- and H2O2). We propose therapies that limit oxidant formation as a possible intervention to restrict DNA damage in ARVC.
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Affiliation(s)
- Marta Pérez-Hernández
- The Leon H. Charney Division of Cardiology, NYU-Grossman School of Medicine, New York (M.P.-H., C.J.M.v.O., G.M.M.-L., M.Z., M.C., M.D.)
| | - Chantal J M van Opbergen
- The Leon H. Charney Division of Cardiology, NYU-Grossman School of Medicine, New York (M.P.-H., C.J.M.v.O., G.M.M.-L., M.Z., M.C., M.D.)
| | - Navratan Bagwan
- Department of Biomedical Sciences (N.B., E.T.V., A.S., F.B.H., M.J.D., K.Q., A.L.), University of Copenhagen, Denmark
| | - Christoffer Rasmus Vissing
- Faculty of Health and Medical Sciences, and Department of Clinical Medicine (C.R.V., A.H.C., S.B., F.G., K.R., T.H.L.J., H.B.), University of Copenhagen, Denmark
- Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen, Denmark (C.R.V., A.H.C., S.B., F.G., K.R., T.H.L.J., H.B.)
| | - Grecia M Marrón-Liñares
- The Leon H. Charney Division of Cardiology, NYU-Grossman School of Medicine, New York (M.P.-H., C.J.M.v.O., G.M.M.-L., M.Z., M.C., M.D.)
| | - Mingliang Zhang
- The Leon H. Charney Division of Cardiology, NYU-Grossman School of Medicine, New York (M.P.-H., C.J.M.v.O., G.M.M.-L., M.Z., M.C., M.D.)
| | - Estefania Torres Vega
- Department of Biomedical Sciences (N.B., E.T.V., A.S., F.B.H., M.J.D., K.Q., A.L.), University of Copenhagen, Denmark
| | - Andrea Sorrentino
- Department of Biomedical Sciences (N.B., E.T.V., A.S., F.B.H., M.J.D., K.Q., A.L.), University of Copenhagen, Denmark
| | - Lylia Drici
- The Novo Nordisk Foundation Center for Protein Research (L.D., K.S.), University of Copenhagen, Denmark
| | - Karolina Sulek
- The Novo Nordisk Foundation Center for Protein Research (L.D., K.S.), University of Copenhagen, Denmark
| | - Ruxu Zhai
- College of Medicine, Drexel University, Philadelphia, PA (R.Z., P.Y.S.)
| | - Finn B Hansen
- Department of Biomedical Sciences (N.B., E.T.V., A.S., F.B.H., M.J.D., K.Q., A.L.), University of Copenhagen, Denmark
| | - Alex H Christensen
- Faculty of Health and Medical Sciences, and Department of Clinical Medicine (C.R.V., A.H.C., S.B., F.G., K.R., T.H.L.J., H.B.), University of Copenhagen, Denmark
- Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen, Denmark (C.R.V., A.H.C., S.B., F.G., K.R., T.H.L.J., H.B.)
- Department of Cardiology, Copenhagen University Hospital-Herlev-Gentofte Hospital, Denmark (A.H.C.)
| | - Søren Boesgaard
- Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen, Denmark (C.R.V., A.H.C., S.B., F.G., K.R., T.H.L.J., H.B.)
- College of Medicine, Drexel University, Philadelphia, PA (R.Z., P.Y.S.)
| | - Finn Gustafsson
- Faculty of Health and Medical Sciences, and Department of Clinical Medicine (C.R.V., A.H.C., S.B., F.G., K.R., T.H.L.J., H.B.), University of Copenhagen, Denmark
- Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen, Denmark (C.R.V., A.H.C., S.B., F.G., K.R., T.H.L.J., H.B.)
| | - Kasper Rossing
- Faculty of Health and Medical Sciences, and Department of Clinical Medicine (C.R.V., A.H.C., S.B., F.G., K.R., T.H.L.J., H.B.), University of Copenhagen, Denmark
- Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen, Denmark (C.R.V., A.H.C., S.B., F.G., K.R., T.H.L.J., H.B.)
| | - Eric M Small
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, NY (E.M.S.)
| | - Michael J Davies
- Department of Biomedical Sciences (N.B., E.T.V., A.S., F.B.H., M.J.D., K.Q., A.L.), University of Copenhagen, Denmark
| | - Eli Rothenberg
- Division of Pharmacology, NYU School of Medicine, New York (E.R.)
| | - Priscila Y Sato
- College of Medicine, Drexel University, Philadelphia, PA (R.Z., P.Y.S.)
| | - Marina Cerrone
- The Leon H. Charney Division of Cardiology, NYU-Grossman School of Medicine, New York (M.P.-H., C.J.M.v.O., G.M.M.-L., M.Z., M.C., M.D.)
| | - Thomas Hartvig Lindkær Jensen
- Faculty of Health and Medical Sciences, and Department of Clinical Medicine (C.R.V., A.H.C., S.B., F.G., K.R., T.H.L.J., H.B.), University of Copenhagen, Denmark
- Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen, Denmark (C.R.V., A.H.C., S.B., F.G., K.R., T.H.L.J., H.B.)
| | - Klaus Qvortrup
- Department of Biomedical Sciences (N.B., E.T.V., A.S., F.B.H., M.J.D., K.Q., A.L.), University of Copenhagen, Denmark
| | - Henning Bundgaard
- Faculty of Health and Medical Sciences, and Department of Clinical Medicine (C.R.V., A.H.C., S.B., F.G., K.R., T.H.L.J., H.B.), University of Copenhagen, Denmark
- Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen, Denmark (C.R.V., A.H.C., S.B., F.G., K.R., T.H.L.J., H.B.)
| | - Mario Delmar
- The Leon H. Charney Division of Cardiology, NYU-Grossman School of Medicine, New York (M.P.-H., C.J.M.v.O., G.M.M.-L., M.Z., M.C., M.D.)
| | - Alicia Lundby
- Department of Biomedical Sciences (N.B., E.T.V., A.S., F.B.H., M.J.D., K.Q., A.L.), University of Copenhagen, Denmark
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5
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van Opbergen CJM, Bagwan N, Maurya SR, Kim JC, Smith AN, Blackwell DJ, Johnston JN, Knollmann BC, Cerrone M, Lundby A, Delmar M. Exercise Causes Arrhythmogenic Remodeling of Intracellular Calcium Dynamics in Plakophilin-2-Deficient Hearts. Circulation 2022; 145:1480-1496. [PMID: 35491884 PMCID: PMC9086182 DOI: 10.1161/circulationaha.121.057757] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Exercise training, and catecholaminergic stimulation, increase the incidence of arrhythmic events in patients affected with arrhythmogenic right ventricular cardiomyopathy correlated with plakophilin-2 (PKP2) mutations. Separate data show that reduced abundance of PKP2 leads to dysregulation of intracellular Ca2+ (Ca2+i) homeostasis. Here, we study the relation between excercise, catecholaminergic stimulation, Ca2+i homeostasis, and arrhythmogenesis in PKP2-deficient murine hearts. METHODS Experiments were performed in myocytes from a cardiomyocyte-specific, tamoxifen-activated, PKP2 knockout murine line (PKP2cKO). For training, mice underwent 75 minutes of treadmill running once per day, 5 days each week for 6 weeks. We used multiple approaches including imaging, high-resolution mass spectrometry, electrocardiography, and pharmacological challenges to study the functional properties of cells/hearts in vitro and in vivo. RESULTS In myocytes from PKP2cKO animals, training increased sarcoplasmic reticulum Ca2+ load, increased the frequency and amplitude of spontaneous ryanodine receptor (ryanodine receptor 2)-mediated Ca2+ release events (sparks), and changed the time course of sarcomeric shortening. Phosphoproteomics analysis revealed that training led to hyperphosphorylation of phospholamban in residues 16 and 17, suggesting a catecholaminergic component. Isoproterenol-induced increase in Ca2+i transient amplitude showed a differential response to β-adrenergic blockade that depended on the purported ability of the blockers to reach intracellular receptors. Additional experiments showed significant reduction of isoproterenol-induced Ca2+i sparks and ventricular arrhythmias in PKP2cKO hearts exposed to an experimental blocker of ryanodine receptor 2 channels. CONCLUSIONS Exercise disproportionately affects Ca2+i homeostasis in PKP2-deficient hearts in a manner facilitated by stimulation of intracellular β-adrenergic receptors and hyperphosphorylation of phospholamban. These cellular changes create a proarrhythmogenic state that can be mitigated by ryanodine receptor 2 blockade. Our data unveil an arrhythmogenic mechanism for exercise-induced or catecholaminergic life-threatening arrhythmias in the setting of PKP2 deficit. We suggest that membrane-permeable β-blockers are potentially more efficient for patients with arrhythmogenic right ventricular cardiomyopathy, highlight the potential for ryanodine receptor 2 channel blockers as treatment for the control of heart rhythm in the population at risk, and propose that PKP2-dependent and phospholamban-dependent arrhythmogenic right ventricular cardiomyopathy-related arrhythmias have a common mechanism.
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Affiliation(s)
- Chantal JM van Opbergen
- The Leon Charney Division of Cardiology, New York University Grossmann School of Medicine, New York, NY, USA
| | - Navratan Bagwan
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Svetlana R Maurya
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Joon-Chul Kim
- The Leon Charney Division of Cardiology, New York University Grossmann School of Medicine, New York, NY, USA
| | - Abigail N Smith
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN, USA
| | - Daniel J Blackwell
- Vanderbilt Center for Arrhythmia Research and Therapeutics, Division of Clinical Pharmacology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Jeffrey N Johnston
- Department of Chemistry & Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN, USA
| | - Björn C Knollmann
- Vanderbilt Center for Arrhythmia Research and Therapeutics, Division of Clinical Pharmacology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Marina Cerrone
- The Leon Charney Division of Cardiology, New York University Grossmann School of Medicine, New York, NY, USA
| | - Alicia Lundby
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Mario Delmar
- The Leon Charney Division of Cardiology, New York University Grossmann School of Medicine, New York, NY, USA
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6
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Sorrentino A, Bagwan N, Linscheid N, Poulsen PC, Kahnert K, Thomsen MB, Delmar M, Lundby A. Beta-blocker/ACE inhibitor therapy differentially impacts the steady state signaling landscape of failing and non-failing hearts. Sci Rep 2022; 12:4760. [PMID: 35306519 PMCID: PMC8934364 DOI: 10.1038/s41598-022-08534-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 03/09/2022] [Indexed: 11/25/2022] Open
Abstract
Heart failure is a multifactorial disease that affects an estimated 38 million people worldwide. Current pharmacotherapy of heart failure with reduced ejection fraction (HFrEF) includes combination therapy with angiotensin-converting enzyme inhibitors (ACEi) and β-adrenergic receptor blockers (β-AR blockers), a therapy also used as treatment for non-cardiac conditions. Our knowledge of the molecular changes accompanying treatment with ACEi and β-AR blockers is limited. Here, we applied proteomics and phosphoproteomics approaches to profile the global changes in protein abundance and phosphorylation state in cardiac left ventricles consequent to combination therapy of β-AR blocker and ACE inhibitor in HFrEF and control hearts. The phosphorylation changes induced by treatment were profoundly different for failing than for non-failing hearts. HFrEF was characterized by profound downregulation of mitochondrial proteins coupled with derangement of β-adrenergic and pyruvate dehydrogenase signaling. Upon treatment, phosphorylation changes consequent to HFrEF were reversed. In control hearts, treatment mainly led to downregulation of canonical PKA signaling. The observation of divergent signaling outcomes depending on disease state underscores the importance of evaluating drug effects within the context of the specific conditions present in the recipient heart.
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7
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Roselli C, Yu M, Nauffal V, Georges A, Yang Q, Love K, Weng LC, Delling FN, Maurya SR, Schrölkamp M, Tfelt-Hansen J, Hagège A, Jeunemaitre X, Debette S, Amouyel P, Guan W, Muehlschlegel JD, Body SC, Shah S, Samad Z, Kyryachenko S, Haynes C, Rienstra M, Le Tourneau T, Probst V, Roussel R, Wijdh-Den Hamer IJ, Siland JE, Knowlton KU, Jacques Schott J, Levine RA, Benjamin EJ, Vasan RS, Horne BD, Muhlestein JB, Benfari G, Enriquez-Sarano M, Natale A, Mohanty S, Trivedi C, Shoemaker MB, Yoneda ZT, Wells QS, Baker MT, Farber-Eger E, Michelena HI, Lundby A, Norris RA, Slaugenhaupt SA, Dina C, Lubitz SA, Bouatia-Naji N, Ellinor PT, Milan DJ. Genome-wide association study reveals novel genetic loci: a new polygenic risk score for mitral valve prolapse. Eur Heart J 2022; 43:1668-1680. [PMID: 35245370 PMCID: PMC9649914 DOI: 10.1093/eurheartj/ehac049] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 08/18/2021] [Accepted: 02/01/2022] [Indexed: 11/12/2022] Open
Abstract
AIMS Mitral valve prolapse (MVP) is a common valvular heart disease with a prevalence of >2% in the general adult population. Despite this high incidence, there is a limited understanding of the molecular mechanism of this disease, and no medical therapy is available for this disease. We aimed to elucidate the genetic basis of MVP in order to better understand this complex disorder. METHODS AND RESULTS We performed a meta-analysis of six genome-wide association studies that included 4884 cases and 434 649 controls. We identified 14 loci associated with MVP in our primary analysis and 2 additional loci associated with a subset of the samples that additionally underwent mitral valve surgery. Integration of epigenetic, transcriptional, and proteomic data identified candidate MVP genes including LMCD1, SPTBN1, LTBP2, TGFB2, NMB, and ALPK3. We created a polygenic risk score (PRS) for MVP and showed an improved MVP risk prediction beyond age, sex, and clinical risk factors. CONCLUSION We identified 14 genetic loci that are associated with MVP. Multiple analyses identified candidate genes including two transforming growth factor-β signalling molecules and spectrin β. We present the first PRS for MVP that could eventually aid risk stratification of patients for MVP screening in a clinical setting. These findings advance our understanding of this common valvular heart disease and may reveal novel therapeutic targets for intervention.
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Affiliation(s)
- Carolina Roselli
- Cardiovascular Disease Initiative, The Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA,Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Mengyao Yu
- Université de Paris, PARCC, Inserm, F-75015 Paris, France
| | - Victor Nauffal
- Cardiovascular Disease Initiative, The Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA,Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Boston, MA, USA
| | - Adrien Georges
- Université de Paris, PARCC, Inserm, F-75015 Paris, France
| | - Qiong Yang
- School of Public Health, Boston University, Boston, MA, USA
| | - Katie Love
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA, USA
| | - Lu Chen Weng
- Cardiovascular Disease Initiative, The Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA,Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA, USA
| | - Francesca N Delling
- Division of Cardiology, University of California San Francisco, San Francisco, CA, USA
| | - Svetlana R Maurya
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, København 2200, Denmark
| | - Maren Schrölkamp
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, København 2200, Denmark
| | - Jacob Tfelt-Hansen
- Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark,Department of Forensic Medicine, Faculty of Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Albert Hagège
- Université de Paris, PARCC, Inserm, F-75015 Paris, France,Assistance Publique–Hôpitaux de Paris, Departments of Cardiology and Genetics, Hôpital Européen Georges Pompidou, 75015 Paris, France
| | - Xavier Jeunemaitre
- Université de Paris, PARCC, Inserm, F-75015 Paris, France,Assistance Publique–Hôpitaux de Paris, Departments of Cardiology and Genetics, Hôpital Européen Georges Pompidou, 75015 Paris, France
| | - Stéphanie Debette
- Bordeaux Population Health Research Center, Inserm Center U1219, University of Bordeaux, Bordeaux, France,Department of Neurology, Bordeaux University Hospital, Inserm U1219, Bordeaux, France
| | - Philippe Amouyel
- Univ. Lille, Inserm, Centre Hosp. Univ Lille, Institut Pasteur de Lille, UMR1167 – RID-AGE- Risk factors and molecular determinants of aging-related diseases, F-59000 Lille, France
| | - Wyliena Guan
- Cardiovascular Disease Initiative, The Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA,Cardiovascular Research Center, Massachusetts General Hospital, Boston, MA, USA,Demoulas Center for Cardiac Arrhythmias, Massachusetts General Hospital, Boston, MA, USA
| | - Jochen D Muehlschlegel
- Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women’s Hospital, Boston, MA, USA
| | - Simon C Body
- Department of Anesthesiology, Boston University School of Medicine, Boston, MA, USA
| | - Svati Shah
- Duke Molecular Physiology Institute, Duke University, Durham, NC, USA,Division of Cardiology, Department of Medicine, Duke University School of Medicine, Durham, NC, USA
| | - Zainab Samad
- Division of Cardiology, Department of Medicine, Duke University School of Medicine, Durham, NC, USA,Department of Medicine, Aga Khan University, Karachi, Pakistan
| | | | - Carol Haynes
- Duke Molecular Physiology Institute, Duke University, Durham, NC, USA
| | - Michiel Rienstra
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Thierry Le Tourneau
- l’institut du thorax, INSERM, CNRS, Univ Nantes, CHU Nantes, Nantes, France,l’institut du thorax, CHU Nantes, Nantes, France
| | - Vincent Probst
- l’institut du thorax, INSERM, CNRS, Univ Nantes, CHU Nantes, Nantes, France
| | - Ronan Roussel
- Cordeliers Research Centre, ImMeDiab Team, INSERM, Université de Paris, Paris, France,Hôpital Bichat-Claude-Bernard, APHP, Department of Diabetology, Paris, France
| | - Inez J Wijdh-Den Hamer
- Department of Cardiothoracic Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Joylene E Siland
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Kirk U Knowlton
- Intermountain Medical Center Heart Institute, Salt Lake City, UT, USA,Division of Cardiovascular Medicine, Department of Medicine, University of California San Diego, San Diego, CA, USA
| | | | - Robert A Levine
- Cardiac Ultrasound Laboratory, Harvard Medical School, Massachusetts General Hospital, Boston, MA, USA
| | - Emelia J Benjamin
- National Heart, Lung, and Blood Institute’s and Boston University’s, The Framingham Heart Study, Framingham, MA, USA,Section of Cardiovascular Medicine, Boston University School of Medicine, Boston, MA, USA,Department of Epidemiology, Boston University School of Public Health, Boston, MA, USA
| | - Ramachandran S Vasan
- School of Public Health, Boston University, Boston, MA, USA,National Heart, Lung, and Blood Institute’s and Boston University’s, The Framingham Heart Study, Framingham, MA, USA,School of Medicine, Boston University, Boston, MA, USA
| | - Benjamin D Horne
- Intermountain Medical Center Heart Institute, Salt Lake City, UT, USA,Division of Cardiovascular Medicine, Department of Medicine, Stanford University, Stanford, CA, USA
| | - Joseph B Muhlestein
- Intermountain Medical Center Heart Institute, Salt Lake City, UT, USA,Cardiology Division, Department of Internal Medicine, University of Utah, Salt Lake City, UT, USA
| | - Giovanni Benfari
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA
| | | | - Andrea Natale
- Texas Cardiac Arrhythmia Institute, St David’s Medical Center, Austin, TX, USA
| | - Sanghamitra Mohanty
- Texas Cardiac Arrhythmia Institute, St David’s Medical Center, Austin, TX, USA
| | - Chintan Trivedi
- Texas Cardiac Arrhythmia Institute, St David’s Medical Center, Austin, TX, USA
| | - Moore B Shoemaker
- Department of Medicine, Division of Cardiovascular Diseases, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Zachary T Yoneda
- Department of Medicine, Division of Cardiovascular Diseases, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Quinn S Wells
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA,Department of Pharmacology, Vanderbilt University Medical Center, Nashville, TN, USA,Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Michael T Baker
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Eric Farber-Eger
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | | | - Alicia Lundby
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, København 2200, Denmark,The Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, København 2200, Denmark
| | - Russell A Norris
- Cardiovascular Developmental Biology Center, Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC, USA
| | | | | | | | | | - Patrick T Ellinor
- Corresponding authors. Tel: +1 617 459 4688, (D.J.M.); Tel: +1 617 724 8729, (P.T.E.)
| | - David J Milan
- Corresponding authors. Tel: +1 617 459 4688, (D.J.M.); Tel: +1 617 724 8729, (P.T.E.)
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8
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Martinez-Val A, Bekker-Jensen DB, Steigerwald S, Koenig C, Østergaard O, Mehta A, Tran T, Sikorski K, Torres-Vega E, Kwasniewicz E, Brynjólfsdóttir SH, Frankel LB, Kjøbsted R, Krogh N, Lundby A, Bekker-Jensen S, Lund-Johansen F, Olsen JV. Spatial-proteomics reveals phospho-signaling dynamics at subcellular resolution. Nat Commun 2021; 12:7113. [PMID: 34876567 PMCID: PMC8651693 DOI: 10.1038/s41467-021-27398-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 11/12/2021] [Indexed: 12/12/2022] Open
Abstract
Dynamic change in subcellular localization of signaling proteins is a general concept that eukaryotic cells evolved for eliciting a coordinated response to stimuli. Mass spectrometry-based proteomics in combination with subcellular fractionation can provide comprehensive maps of spatio-temporal regulation of protein networks in cells, but involves laborious workflows that does not cover the phospho-proteome level. Here we present a high-throughput workflow based on sequential cell fractionation to profile the global proteome and phospho-proteome dynamics across six distinct subcellular fractions. We benchmark the workflow by studying spatio-temporal EGFR phospho-signaling dynamics in vitro in HeLa cells and in vivo in mouse tissues. Finally, we investigate the spatio-temporal stress signaling, revealing cellular relocation of ribosomal proteins in response to hypertonicity and muscle contraction. Proteomics data generated in this study can be explored through https://SpatialProteoDynamics.github.io .
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Affiliation(s)
- Ana Martinez-Val
- Novo Nordisk Foundation Center for Protein Research, Proteomics Program, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Dorte B Bekker-Jensen
- Novo Nordisk Foundation Center for Protein Research, Proteomics Program, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Evosep Systems, Odense, Denmark
| | - Sophia Steigerwald
- Novo Nordisk Foundation Center for Protein Research, Proteomics Program, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Max Planck Institute of Biochemistry, Department of Proteomics and Signal Transduction, Martinsried, Germany
| | - Claire Koenig
- Novo Nordisk Foundation Center for Protein Research, Proteomics Program, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ole Østergaard
- Novo Nordisk Foundation Center for Protein Research, Proteomics Program, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Adi Mehta
- Department of Immunology, Oslo University Hospital, Rikshospitalet, Postboks 4950, Nydalen, 0424, Oslo, Norway
| | - Trung Tran
- Department of Immunology, Oslo University Hospital, Rikshospitalet, Postboks 4950, Nydalen, 0424, Oslo, Norway
| | - Krzysztof Sikorski
- Department of Immunology, Oslo University Hospital, Rikshospitalet, Postboks 4950, Nydalen, 0424, Oslo, Norway
| | - Estefanía Torres-Vega
- Cardiac Proteomics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ewa Kwasniewicz
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | | | - Lisa B Frankel
- Danish Cancer Society, Copenhagen, Denmark
- Danish Cancer Society Research Center, Copenhagen, Denmark
- Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen, Denmark
| | - Rasmus Kjøbsted
- The August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Nicolai Krogh
- Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Alicia Lundby
- Novo Nordisk Foundation Center for Protein Research, Proteomics Program, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Cardiac Proteomics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Simon Bekker-Jensen
- Center for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Fridtjof Lund-Johansen
- Department of Immunology, Oslo University Hospital, Rikshospitalet, Postboks 4950, Nydalen, 0424, Oslo, Norway.
| | - Jesper V Olsen
- Novo Nordisk Foundation Center for Protein Research, Proteomics Program, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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9
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Sorrentino A, Bagwan N, Linscheid N, Poulsen P, Kahnert K, Thomsen M, Delmar M, Lundby A. Beta-blocker/ACE inhibitor therapy differentially impacts the steady state signaling landscape of failing and non-failing hearts. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
The molecular underpinnings of heart failure with reduced ejection fraction (HFrEF) involves a complex remodeling of the contractile, metabolic and electrical functions. Current pharmacotherapy for patients presenting HFrEF includes combination of angiotensin-converting enzyme inhibitors (ACEi) and β-adrenergic receptor blockers (β-AR blockers). Yet, a knowledge gap exists regarding the molecular changes accompanying such treatment.
Purpose
The present study takes an omics approach to study protein and phosphorylation signaling derangement in HFrEF and to define the global changes resulting from treatment with β-AR blocker (metoprolol) and ACE inhibitor (enalapril) in control- and HFrEF hearts.
Methods and results
For induction of HFrEF, a tight and permanent ligature was applied to constrict the transverse aorta in male C57BL6 mice. Eight weeks post-surgery, an osmotic pump was implanted delivering either vehicle or treatment (enalapril, ACE inhibitor, and metoprolol, β-AR blocker) for a two week period. The proteome- and phosphoproteome of left ventricular tissue was resolved using high-resolution liquid chromatography-mass spectrometry. The resulting dataset covered 6,004 proteins and 14,967 phosphorylation events. HFrEF was characterized by profound downregulation of mitochondrial proteins coupled with derangement of β-adrenergic and pyruvate dehydrogenase signaling. Upon treatment, phosphorylation changes consequent to HFrEF were reversed, including a reversal of Pdhk4 activity. In controls, treatment mainly led to downregulation of canonical PKA signaling. Overall, the signaling response elicited by treatment was profoundly different for failing than for control hearts.
Conclusions
We used state-of-the-art proteomics and phosphoproteomics approaches to analyze changes in protein abundance and phosphorylation state of the left ventricle resulting from combination therapy with a β-AR blocker and an ACE inhibitor in failing and non-failing hearts. Our observation of divergent signaling outcomes depending on the disease state of the heart underscores the importance of evaluating drug effects within the context of the specific conditions present in the recipient heart.
Funding Acknowledgement
Type of funding sources: Foundation. Main funding source(s): The Danish Council for independent ResearchLundbeck FoundationFondation Leducq Transatlantic Network of Excellence
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Affiliation(s)
- A Sorrentino
- University of Copenhagen, Department of Biomedical Sciences, Copenhagen, Denmark
| | - N Bagwan
- University of Copenhagen, Department of Biomedical Sciences, Copenhagen, Denmark
| | - N Linscheid
- University of Copenhagen, Department of Biomedical Sciences, Copenhagen, Denmark
| | - P Poulsen
- University of Copenhagen, Department of Biomedical Sciences, Copenhagen, Denmark
| | - K Kahnert
- University of Copenhagen, Department of Biomedical Sciences, Copenhagen, Denmark
| | - M Thomsen
- University of Copenhagen, Department of Biomedical Sciences, Copenhagen, Denmark
| | - M Delmar
- New York Medical College, Division of Cardiology, New York, United States of America
| | - A Lundby
- University of Copenhagen, Department of Biomedical Sciences/The Novo Nordisk Foundations Center for Protein Research, Copenhagen, Denmark
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10
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Ye JZ, Hansen FB, Mills RW, Lundby A. Oncotherapeutic Protein Kinase Inhibitors Associated With Pro-Arrhythmic Liability. JACC CardioOncol 2021; 3:88-97. [PMID: 34396309 PMCID: PMC8352262 DOI: 10.1016/j.jaccao.2021.01.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 01/05/2021] [Accepted: 01/06/2021] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Ibrutinib is a protein kinase inhibitor that has been widely successful in treating multiple common variations of B-cell cancers. However, an unfortunate side effect of ibrutinib is that it predisposes patients to development of atrial fibrillation. OBJECTIVES The purpose of this study was to assess other commonly prescribed protein kinase inhibitors for similar pro-arrhythmic liability. METHODS This study comprehensively evaluated data from the U.S. Food and Drug Administration adverse events reporting system and determined the reporting of cardiac arrhythmia attributed to kinase inhibitor therapy using a multivariable logistic regression model. We evaluated 3,663,300 case reports containing 23,067 cases of atrial fibrillation and 66,262 cases of cardiac arrhythmia. In total, 32 protein kinase inhibitors were evaluated, almost all of which are oncotherapeutics. RESULTS Seven protein kinase inhibitors were associated with a significant increase in the odds of atrial fibrillation (ibrutinib, ponatinib, nilotinib, ribociclib, trametinib, osimertinib, and idelalisib). Assessment of broader pro-arrhythmic toxicity suggested a ventricular-specific liability for nilotinib and a bradyarrhythmia risk with alectinib and crizotinib. CONCLUSIONS Compounds that result in the inhibition of a number of protein kinases are associated with an increased risk of cardiac rhythm disturbances. The mechanisms driving the arrhythmogenic effects remain to be discovered, but this study presents an important step in identifying and prioritizing the study of these protein kinase signaling pathways.
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Key Words
- AF, atrial fibrillation
- FAERS, FDA Adverse Event Reporting System
- FDA, U.S. Food and Drug Administration
- HLGT, high level group terms
- HLT, high level terms
- MedDRA, Medical Dictionary for Regulatory Activities
- PKI, protein kinase inhibitor
- PT, preferred term
- ROR, reporting odds ratio
- SOC, system organ classes
- alectinib
- cardiac arrhythmia
- cardiotoxicity
- crizotinib
- ibrutinib
- idelalisib
- nilotinib
- osimertinib
- pharmacovigilance
- ponatinib
- protein kinase inhibitor
- ribociclib
- risk models
- trametinib U.S. Food and Drug Administration Adverse Event Reporting System
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Affiliation(s)
- Johan Z. Ye
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Health Technology, Section for Bioinformatics, Technical University of Denmark, Lyngby, Denmark
| | - Finn B. Hansen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Robert W. Mills
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Alicia Lundby
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- The Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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11
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Bagwan N, El Ali HH, Lundby A. Proteome-wide profiling and mapping of post translational modifications in human hearts. Sci Rep 2021; 11:2184. [PMID: 33500497 PMCID: PMC7838296 DOI: 10.1038/s41598-021-81986-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 01/14/2021] [Indexed: 11/21/2022] Open
Abstract
Post translational modifications (PTMs) are covalent modifications of proteins that can range from small chemical modifications to addition of entire proteins. PTMs contribute to regulation of protein function and thereby greatly increase the functional diversity of the proteome. In the heart, a few well-studied PTMs, such as phosphorylation and glycosylation, are known to play essential roles for cardiac function. Yet, only a fraction of the ~ 300 known PTMs have been studied in a cardiac context. Here we investigated the proteome-wide map of PTMs present in human hearts by utilizing high-resolution mass spectrometry measurements and a suite of PTM identification algorithms. Our approach led to identification of more than 150 different PTMs across three of the chambers in human hearts. This finding underscores that decoration of cardiac proteins by PTMs is much more diverse than hitherto appreciated and provides insights in cardiac protein PTMs not yet studied. The results presented serve as a catalogue of which PTMs are present in human hearts and outlines the particular protein and the specific amino acid modified, and thereby provides a detail-rich resource for exploring protein modifications in human hearts beyond the most studied PTMs.
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Affiliation(s)
- Navratan Bagwan
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Henrik H El Ali
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Alicia Lundby
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200, Copenhagen, Denmark. .,The Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenahagen, Blegdamsvej 3, 2200, Copenhagen N, Denmark.
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12
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Xiao L, Salem JE, Clauss S, Hanley A, Bapat A, Hulsmans M, Iwamoto Y, Wojtkiewicz G, Cetinbas M, Schloss MJ, Tedeschi J, Lebrun-Vignes B, Lundby A, Sadreyev RI, Moslehi J, Nahrendorf M, Ellinor PT, Milan DJ. Ibrutinib-Mediated Atrial Fibrillation Attributable to Inhibition of C-Terminal Src Kinase. Circulation 2020; 142:2443-2455. [PMID: 33092403 DOI: 10.1161/circulationaha.120.049210] [Citation(s) in RCA: 114] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND Ibrutinib is a Bruton tyrosine kinase inhibitor with remarkable efficacy against B-cell cancers. Ibrutinib also increases the risk of atrial fibrillation (AF), which remains poorly understood. METHODS We performed electrophysiology studies on mice treated with ibrutinib to assess inducibility of AF. Chemoproteomic analysis of cardiac lysates identified candidate ibrutinib targets, which were further evaluated in genetic mouse models and additional pharmacological experiments. The pharmacovigilance database, VigiBase, was queried to determine whether drug inhibition of an identified candidate kinase was associated with increased reporting of AF. RESULTS We demonstrate that treatment of mice with ibrutinib for 4 weeks results in inducible AF, left atrial enlargement, myocardial fibrosis, and inflammation. This effect was reproduced in mice lacking Bruton tyrosine kinase, but not in mice treated with 4 weeks of acalabrutinib, a more specific Bruton tyrosine kinase inhibitor, demonstrating that AF is an off-target side effect. Chemoproteomic profiling identified a short list of candidate kinases that was narrowed by additional experimentation leaving CSK (C-terminal Src kinase) as the strongest candidate for ibrutinib-induced AF. Cardiac-specific Csk knockout in mice led to increased AF, left atrial enlargement, fibrosis, and inflammation, phenocopying ibrutinib treatment. Disproportionality analyses in VigiBase confirmed increased reporting of AF associated with kinase inhibitors blocking Csk versus non-Csk inhibitors, with a reporting odds ratio of 8.0 (95% CI, 7.3-8.7; P<0.0001). CONCLUSIONS These data identify Csk inhibition as the mechanism through which ibrutinib leads to AF. Registration: URL: https://ww.clinicaltrials.gov; Unique identifier: NCT03530215.
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Affiliation(s)
- Ling Xiao
- Cardiovascular Research Center (L.X., S.C., A.H., A.B., J.T., M.N., P.T.E., D.J.M.), Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Joe-Elie Salem
- Clinical Pharmacology, Sorbonne University, INSERM, APHP, UNICO-GRECO Cardio-oncology Program (J-E.S., B.L-V.), Sorbonne University, ISERM, APHP, UNICO-GRECO Cardio-oncology Program, Hospital Pitié-Salpêtrière, Paris, France.,Clinical Investigation Center, Paris, France (J-E.S.).,Vanderbilt University Medical Center, Cardio-Oncology Program, Division of Cardiovascular Medicine, Nashville, TN (J-E.S., J.M.)
| | - Sebastian Clauss
- Cardiovascular Research Center (L.X., S.C., A.H., A.B., J.T., M.N., P.T.E., D.J.M.), Massachusetts General Hospital and Harvard Medical School, Boston, MA.,Department of Medicine I, Klinikum Grosshadern, University of Munich, Germany (S.C.).,DZHK (German Centre for Cardiovascular Research), Partner Site Munich, Munich Heart Alliance, Germany (S.C.)
| | - Alan Hanley
- Cardiovascular Research Center (L.X., S.C., A.H., A.B., J.T., M.N., P.T.E., D.J.M.), Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Aneesh Bapat
- Cardiovascular Research Center (L.X., S.C., A.H., A.B., J.T., M.N., P.T.E., D.J.M.), Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Maarten Hulsmans
- Center for Systems Biology, Department of Radiology (M.H., Y.I., G.W., M.J.S., M.N.), Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Yoshiko Iwamoto
- Center for Systems Biology, Department of Radiology (M.H., Y.I., G.W., M.J.S., M.N.), Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Gregory Wojtkiewicz
- Center for Systems Biology, Department of Radiology (M.H., Y.I., G.W., M.J.S., M.N.), Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Murat Cetinbas
- Department of Molecular Biology(M.C.), Massachusetts General Hospital and Harvard Medical School, Boston, MA.,Department of Genetics, Harvard Medical School, Boston, MA (M.C.)
| | - Maximilian J Schloss
- Center for Systems Biology, Department of Radiology (M.H., Y.I., G.W., M.J.S., M.N.), Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Justin Tedeschi
- Cardiovascular Research Center (L.X., S.C., A.H., A.B., J.T., M.N., P.T.E., D.J.M.), Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Bénédicte Lebrun-Vignes
- Clinical Pharmacology, Sorbonne University, INSERM, APHP, UNICO-GRECO Cardio-oncology Program (J-E.S., B.L-V.), Sorbonne University, ISERM, APHP, UNICO-GRECO Cardio-oncology Program, Hospital Pitié-Salpêtrière, Paris, France.,Clinical Pharmacology and Regional Pharmacovigilance Center (B.L-V.), Sorbonne University, ISERM, APHP, UNICO-GRECO Cardio-oncology Program, Hospital Pitié-Salpêtrière, Paris, France.,Université Paris Est (UPEC), IRMB- EA 7379 EpiDermE (Epidemiology in Dermatology and Evaluation of Therapeutics), F-94010, Créteil, France (B.L-V.)
| | - Alicia Lundby
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences and NNF Center for Protein Research, Københavns Universitet, Copenhagen, Denmark (A.L.)
| | - Ruslan I Sadreyev
- Department of Pathology (R.I.S.), Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Javid Moslehi
- Vanderbilt University Medical Center, Cardio-Oncology Program, Division of Cardiovascular Medicine, Nashville, TN (J-E.S., J.M.)
| | - Matthias Nahrendorf
- Cardiovascular Research Center (L.X., S.C., A.H., A.B., J.T., M.N., P.T.E., D.J.M.), Massachusetts General Hospital and Harvard Medical School, Boston, MA.,Center for Systems Biology, Department of Radiology (M.H., Y.I., G.W., M.J.S., M.N.), Massachusetts General Hospital and Harvard Medical School, Boston, MA
| | - Patrick T Ellinor
- Cardiovascular Research Center (L.X., S.C., A.H., A.B., J.T., M.N., P.T.E., D.J.M.), Massachusetts General Hospital and Harvard Medical School, Boston, MA.,Cardiovascular Disease Initiative, Broad Institute of Harvard and MIT, Cambridge, MA (P.T.E.)
| | - David J Milan
- Cardiovascular Research Center (L.X., S.C., A.H., A.B., J.T., M.N., P.T.E., D.J.M.), Massachusetts General Hospital and Harvard Medical School, Boston, MA.,Leducq Foundation, Boston, MA (D.J.M.)
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13
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Linscheid N, Poulsen PC, Pedersen ID, Gregers E, Svendsen JH, Olesen MS, Olsen JV, Delmar M, Lundby A. Quantitative Proteomics of Human Heart Samples Collected In Vivo Reveal the Remodeled Protein Landscape of Dilated Left Atrium Without Atrial Fibrillation. Mol Cell Proteomics 2020; 19:1132-1144. [PMID: 32291283 PMCID: PMC7338087 DOI: 10.1074/mcp.ra119.001878] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 03/13/2020] [Indexed: 12/11/2022] Open
Abstract
Genetic and genomic research has greatly advanced our understanding of heart disease. Yet, comprehensive, in-depth, quantitative maps of protein expression in hearts of living humans are still lacking. Using samples obtained during valve replacement surgery in patients with mitral valve prolapse (MVP), we set out to define inter-chamber differences, the intersect of proteomic data with genetic or genomic datasets, and the impact of left atrial dilation on the proteome of patients with no history of atrial fibrillation (AF).We collected biopsies from right atria (RA), left atria (LA) and left ventricle (LV) of seven male patients with mitral valve regurgitation with dilated LA but no history of AF. Biopsy samples were analyzed by high-resolution mass spectrometry (MS), where peptides were pre-fractionated by reverse phase high-pressure liquid chromatography prior to MS measurement on a Q-Exactive-HF Orbitrap instrument. We identified 7,314 proteins based on 130,728 peptides. Results were confirmed in an independent set of biopsies collected from three additional individuals. Comparative analysis against data from post-mortem samples showed enhanced quantitative power and confidence level in samples collected from living hearts. Our analysis, combined with data from genome wide association studies suggested candidate gene associations to MVP, identified higher abundance in ventricle for proteins associated with cardiomyopathies and revealed the dilated LA proteome, demonstrating differential representation of molecules previously associated with AF, in non-AF hearts.This is the largest dataset of cardiac protein expression from human samples collected in vivo It provides a comprehensive resource that allows insight into molecular fingerprints of MVP and facilitates novel inferences between genomic data and disease mechanisms. We propose that over-representation of proteins in ventricle is consequent not to redundancy but to functional need, and conclude that changes in abundance of proteins known to associate with AF are not sufficient for arrhythmogenesis.
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Affiliation(s)
- Nora Linscheid
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen N, Denmark
| | - Pi Camilla Poulsen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen N, Denmark
| | - Ida Dalgaard Pedersen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen N, Denmark
| | - Emilie Gregers
- Laboratory for Molecular Cardiology, the Heart Centre, Rigshospitalet, Denmark
| | | | - Morten Salling Olesen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen N, Denmark
| | - Jesper Velgaard Olsen
- The Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen N, Denmark
| | - Mario Delmar
- Leon H Charney Division of Cardiology, NYU School of Medicine, New York, New York, USA
| | - Alicia Lundby
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen N, Denmark; The Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen N, Denmark.
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14
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Poulsen PC, Schrölkamp M, Bagwan N, Leurs U, Humphries ESA, Bomholzt SH, Nielsen MS, Bentzen BH, Olsen JV, Lundby A. Quantitative proteomics characterization of acutely isolated primary adult rat cardiomyocytes and fibroblasts. J Mol Cell Cardiol 2020; 143:63-70. [PMID: 32325152 DOI: 10.1016/j.yjmcc.2020.04.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/01/2020] [Accepted: 04/15/2020] [Indexed: 12/13/2022]
Abstract
Our heart is comprised of many different cell types that all contribute to cardiac function. An important step in deciphering the molecular complexity of our heart is to decipher the molecular composition of the various cardiac cell types. Here we set out to delineate a comprehensive protein expression profile of the two most prevalent cell types in the heart: cardiomyocytes and cardiac fibroblasts. To this end, we isolated cardiomyocytes and fibroblasts from rat hearts and combined state-of-the-art flow cytometry with high-resolution mass spectrometry to investigate their proteome profiles right after isolation. We measured and quantified 5240 proteins in cardiomyocytes and 6328 proteins in cardiac fibroblasts. In addition to providing a global protein profile for these cardiac cell types, we also present specific findings, such as unique expression of ion channels and transcription factors for each cell type. For instance, we show that the sodium channel Scn7a and the cation channel Trpm7 are expressed in fibroblasts but not in cardiomyocytes, which underscores the importance of investigating the endogenous cell host prior to functional studies. Our dataset represents a valuable resource on protein expression profiles in these two primary cardiac cells types.
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Affiliation(s)
- Pi Camilla Poulsen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark
| | - Maren Schrölkamp
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark
| | - Navratan Bagwan
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark
| | - Ulrike Leurs
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark
| | - Edward S A Humphries
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark
| | - Sofia Hammami Bomholzt
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark
| | - Morten Schak Nielsen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark
| | - Bo Hjorth Bentzen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark
| | - Jesper Velgaard Olsen
- The Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark
| | - Alicia Lundby
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark; The Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen N, Denmark.
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15
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Poulsen MH, Maurya SR, Sigurdsson J, Lundby A, Pless SA. Protein-Protein Interactions of Human P2X7 in Microglia and Human ASIC1a in Kidney Cells. Biophys J 2020. [DOI: 10.1016/j.bpj.2019.11.3167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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16
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Emdal KB, Lundby A. Molecular switches in signaling networks as a mechanism of action for oncogenic mutations in proximity of tyrosine residues. Mol Cell Oncol 2020; 7:1692643. [PMID: 31993501 PMCID: PMC6961691 DOI: 10.1080/23723556.2019.1692643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/08/2019] [Accepted: 11/11/2019] [Indexed: 10/27/2022]
Abstract
We developed a mass spectrometry-based proteomics strategy to study oncogenic phosphotyrosine signaling networks in tissues. We outlined epidermal growth factor-dependent phosphotyrosine signaling in lung tissue and discovered that cancer mutations in vicinity of phosphotyrosine sites can induce molecular switches in recruited protein complexes, which ultimately alter the signaling outcome of the network activation.
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Affiliation(s)
- Kristina B Emdal
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Alicia Lundby
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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17
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Boyett M, Lundby A. A New Window onto the Pacemaker of the Heart, the Sinus Node, Provided by Quantitative Proteomics and Single-Nucleus Transcriptomics. J Cell Immunol 2020; 2:38-41. [PMID: 32342062 PMCID: PMC7186080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Mark Boyett
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, København, 2200, Denmark
| | - Alicia Lundby
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, København, 2200, Denmark,The Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, København, 2200, Denmark
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18
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Kim JC, Perez-Hernandez M, Alvarado FJ, Maurya SR, Montnach J, Yin Y, Zhang M, Lin X, Heguy A, Rothenberg E, Lundby A, Valdivia HH, Cerrone M, Delmar M. 4965Non-transcriptional disruption of Ca2+i homeostasis and Cx43 function in the right ventricle precedes overt arrhythmogenic cardiomyopathy in PKP2-deficient mice. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Plakophilin-2 (PKP2) is classically defined as a protein of the desmosome, an intercellular adhesion structure that also acts as a signaling hub to maintain structural and electrical homeostasis. Mutations in PKP2 associate with most cases of gene-positive arrhythmogenic right ventricular cardiomyopathy (ARVC). A better understanding of PKP2 cardiac biology can help elucidate the mechanisms underlying arrhythmic and cardiomyopathic events that occur consequent to its mutation. Here we sought to captureearly molecular/cellular events that can act as nascent substrates for subsequent arrhythmic/cardiomyopathic phenotypes.
Methods
We used multiple quantitative imaging modalities, as well as biochemical and high-resolution mass spectrometry methods to study the functional/structural properties of cells/tissues derived from cardiomyocyte-specific, tamoxifen-activated, PKP2 knockout mice (“PKP2cKO”). Studies were carried out 14 days post-tamoxifen injection, a time point preceding an overt electrical or structural phenotype.Myocytes from right or left ventricular free wall were studied separately, to detect functional/structural asymmetries.
Results
Most properties of PKP2cKO left ventricular (LV) myocytes were not different from control; in contrast, PKP2cKO right ventricular (RV) myocytes showed increased amplitude and duration of Ca2+transients, increased frequency of spontaneous Ca2+release events, increased [Ca2+] in the cytoplasm and sarcoplasmic reticulum compartments, and dynamic Ca2+accumulation in mitochondria. In addition, RyR2 in RV presented enhanced sensitivity to Ca2+and preferential phosphorylation in a domain known to modulate Ca2+gating. RNAseq at 14 days post-TAM showed no relevant difference in transcript abundance between RV and LV, neither in control nor in PKP2cKO cells, suggesting that in the earliest stage, [Ca2+]i dysfunction is not transcriptional. Rather, we found an RV-predominant increase in membrane permeability that can permit Ca2+entry into the cell. Cx43 ablation mitigated the increase in membrane permeability, the accumulation of cytoplasmic Ca2+and the early stages of RV dysfunction.
Conclusions
Loss of PKP2 creates an RV-predominant arrhythmogenic substrate (Ca2+ dysregulation) that precedes the cardiomyopathy and that is, at least in part, mediated by a Cx43-dependent membrane conduit. Given that asymmetric Ca2+ dysregulation precedes the cardiomyopathic stage, we speculate that abnormal Ca2+ handling in RV myocytes can be a trigger for gross structural changes observed at a later stage.
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Affiliation(s)
- J C Kim
- New York University Langone Medical Center, New York, United States of America
| | - M Perez-Hernandez
- New York University Langone Medical Center, New York, United States of America
| | - F J Alvarado
- University of Wisconsin-Madison, Madison, United States of America
| | - S R Maurya
- University of Copenhagen, Copenhagen, Denmark
| | - J Montnach
- Research unit of l'Institut du thorax, Nantes, France
| | - Y Yin
- New York University Langone Medical Center, New York, United States of America
| | - M Zhang
- New York University Langone Medical Center, New York, United States of America
| | - X Lin
- New York University Langone Medical Center, New York, United States of America
| | - A Heguy
- New York University Langone Medical Center, New York, United States of America
| | - E Rothenberg
- New York University Langone Medical Center, New York, United States of America
| | - A Lundby
- University of Copenhagen, Copenhagen, Denmark
| | - H H Valdivia
- University of Wisconsin-Madison, Madison, United States of America
| | - M Cerrone
- New York University Langone Medical Center, New York, United States of America
| | - M Delmar
- New York University Langone Medical Center, New York, United States of America
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19
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Ye JZ, Delmar M, Lundby A, Olesen MS. Reevaluation of genetic variants previously associated with arrhythmogenic right ventricular cardiomyopathy integrating population-based cohorts and proteomics data. Clin Genet 2019; 96:506-514. [PMID: 31402444 DOI: 10.1111/cge.13621] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 07/12/2019] [Accepted: 07/30/2019] [Indexed: 11/27/2022]
Abstract
Arrhythmogenic right ventricular cardiomyopathy (ARVC) is one of the most common causes of sudden cardiac death in young people. Patients diagnosed with ARVC may experience increased likelihood of development of anxiety and depression, emphasizing the need for accurate diagnosis. To assist future genetic diagnosis and avoidance of misdiagnosis, we evaluated the reported monogenic disease-causing variants in ARVD/C Genetic Variants Database, Human Gene Mutation Database, and ClinVar. Within the aforementioned databases, 630 monogenic disease-causing variants from 18 genes were identified. In the genome Aggregation Database, 226 of these were identified; 68 of which were found at greater than expected prevalence. Furthermore, 37/226 genetic variants were identified amongst the 409 000 UK biobank participants, 23 were not associated with ARVC. Among the 14 remaining variants, 13 were previously found with greater than expected prevalence for a monogenic variant. Nevertheless, they were associated with serious cardiac phenotypes, suggesting that these 13 variants may be disease-modifiers of ARVC, rather than monogenic disease-causing. In summary, more than 10% of variants previously reported to cause ARVC were found unlikely to be associated with highly penetrant monogenic forms of ARVC. Notably, all variants in OBSCN and MYBPC3 were found, making these unlikely to be monogenic causes of ARVC.
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Affiliation(s)
- Johan Z Ye
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen N, Denmark.,Department of Health Technology, Section for Bioinformatics, Technical University of Denmark, DTU, Kgs. Lyngby, Denmark
| | - Mario Delmar
- The Leon H. Charney Division of Cardiology, New York University School of Medicine, New York, New York
| | - Alicia Lundby
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen N, Denmark.,Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen N, Denmark
| | - Morten S Olesen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen N, Denmark.,Laboratory of Molecular Cardiology, Department of Cardiology, Heart Centre, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
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20
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Kim JC, Pérez-Hernández M, Alvarado FJ, Maurya SR, Montnach J, Yin Y, Zhang M, Lin X, Vasquez C, Heguy A, Liang FX, Woo SH, Morley GE, Rothenberg E, Lundby A, Valdivia HH, Cerrone M, Delmar M. Disruption of Ca 2+i Homeostasis and Connexin 43 Hemichannel Function in the Right Ventricle Precedes Overt Arrhythmogenic Cardiomyopathy in Plakophilin-2-Deficient Mice. Circulation 2019; 140:1015-1030. [PMID: 31315456 DOI: 10.1161/circulationaha.119.039710] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Plakophilin-2 (PKP2) is classically defined as a desmosomal protein. Mutations in PKP2 associate with most cases of gene-positive arrhythmogenic right ventricular cardiomyopathy. A better understanding of PKP2 cardiac biology can help elucidate the mechanisms underlying arrhythmic and cardiomyopathic events consequent to PKP2 deficiency. Here, we sought to capture early molecular/cellular events that can act as nascent arrhythmic/cardiomyopathic substrates. METHODS We used multiple imaging, biochemical and high-resolution mass spectrometry methods to study functional/structural properties of cells/tissues derived from cardiomyocyte-specific, tamoxifen-activated, PKP2 knockout mice (PKP2cKO) 14 days post-tamoxifen injection, a time point preceding overt electrical or structural phenotypes. Myocytes from right or left ventricular free wall were studied separately. RESULTS Most properties of PKP2cKO left ventricular myocytes were not different from control; in contrast, PKP2cKO right ventricular (RV) myocytes showed increased amplitude and duration of Ca2+ transients, increased Ca2+ in the cytoplasm and sarcoplasmic reticulum, increased frequency of spontaneous Ca2+ release events (sparks) even at comparable sarcoplasmic reticulum load, and dynamic Ca2+ accumulation in mitochondria. We also observed early- and delayed-after transients in RV myocytes and heightened susceptibility to arrhythmias in Langendorff-perfused hearts. In addition, ryanodine receptor 2 in PKP2cKO-RV cells presented enhanced Ca2+ sensitivity and preferential phosphorylation in a domain known to modulate Ca2+ gating. RNAseq at 14 days post-tamoxifen showed no relevant difference in transcript abundance between RV and left ventricle, neither in control nor in PKP2cKO cells. Instead, we found an RV-predominant increase in membrane permeability that can permit Ca2+ entry into the cell. Connexin 43 ablation mitigated the membrane permeability increase, accumulation of cytoplasmic Ca2+, increased frequency of sparks and early stages of RV dysfunction. Connexin 43 hemichannel block with GAP19 normalized [Ca2+]i homeostasis. Similarly, protein kinase C inhibition normalized spark frequency at comparable sarcoplasmic reticulum load levels. CONCLUSIONS Loss of PKP2 creates an RV-predominant arrhythmogenic substrate (Ca2+ dysregulation) that precedes the cardiomyopathy; this is, at least in part, mediated by a Connexin 43-dependent membrane conduit and repressed by protein kinase C inhibitors. Given that asymmetric Ca2+ dysregulation precedes the cardiomyopathic stage, we speculate that abnormal Ca2+ handling in RV myocytes can be a trigger for gross structural changes observed at a later stage.
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Affiliation(s)
- Joon-Chul Kim
- The Leon H. Charney Division of Cardiology (J.C.K., M.P.H., M.Z., X.L., C.V., M.C., M.D.), New York University School of Medicine
| | - Marta Pérez-Hernández
- The Leon H. Charney Division of Cardiology (J.C.K., M.P.H., M.Z., X.L., C.V., M.C., M.D.), New York University School of Medicine
| | - Francisco J Alvarado
- Department of Medicine and Cardiovascular Research Center, University of Wisconsin-Madison School of Medicine and Public Health (F.J.A., H.H.V.)
| | - Svetlana R Maurya
- Department of Biomedical Sciences (S.R.M., A.L.), Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Jerome Montnach
- Institut du Thorax, Nouvelle Universite a Nantes, INSERM, Nantes Cedex 1, France (J.M.)
| | - Yandong Yin
- Department of Pharmacology and Biochemistry (Y.Y., E.R.), New York University School of Medicine
| | - Mingliang Zhang
- The Leon H. Charney Division of Cardiology (J.C.K., M.P.H., M.Z., X.L., C.V., M.C., M.D.), New York University School of Medicine
| | - Xianming Lin
- The Leon H. Charney Division of Cardiology (J.C.K., M.P.H., M.Z., X.L., C.V., M.C., M.D.), New York University School of Medicine
| | - Carolina Vasquez
- The Leon H. Charney Division of Cardiology (J.C.K., M.P.H., M.Z., X.L., C.V., M.C., M.D.), New York University School of Medicine
| | - Adriana Heguy
- Department of Pathology and Genome Technology Center (A.H., G.E.M.), New York University School of Medicine
| | - Feng-Xia Liang
- Microscopy Laboratory, Division of Advanced Research Technologies (F.X.L.), New York University School of Medicine
| | - Sun-Hee Woo
- Laboratory of Physiology, College of Pharmacy, Chungam National University, Daejeon, South Korea (S.H.W.)
| | - Gregory E Morley
- Department of Pathology and Genome Technology Center (A.H., G.E.M.), New York University School of Medicine
| | - Eli Rothenberg
- Department of Pharmacology and Biochemistry (Y.Y., E.R.), New York University School of Medicine
| | - Alicia Lundby
- Department of Biomedical Sciences (S.R.M., A.L.), Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.,NNF Center for Protein Research (A.L.), Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Hector H Valdivia
- Department of Medicine and Cardiovascular Research Center, University of Wisconsin-Madison School of Medicine and Public Health (F.J.A., H.H.V.)
| | - Marina Cerrone
- The Leon H. Charney Division of Cardiology (J.C.K., M.P.H., M.Z., X.L., C.V., M.C., M.D.), New York University School of Medicine
| | - Mario Delmar
- The Leon H. Charney Division of Cardiology (J.C.K., M.P.H., M.Z., X.L., C.V., M.C., M.D.), New York University School of Medicine
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21
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Linscheid N, Logantha SJRJ, Poulsen PC, Zhang S, Schrölkamp M, Egerod KL, Thompson JJ, Kitmitto A, Galli G, Humphries MJ, Zhang H, Pers TH, Olsen JV, Boyett M, Lundby A. Quantitative proteomics and single-nucleus transcriptomics of the sinus node elucidates the foundation of cardiac pacemaking. Nat Commun 2019; 10:2889. [PMID: 31253831 PMCID: PMC6599035 DOI: 10.1038/s41467-019-10709-9] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 05/28/2019] [Indexed: 12/13/2022] Open
Abstract
The sinus node is a collection of highly specialised cells constituting the heart’s pacemaker. The molecular underpinnings of its pacemaking abilities are debated. Using high-resolution mass spectrometry, we here quantify >7,000 proteins from sinus node and neighbouring atrial muscle. Abundances of 575 proteins differ between the two tissues. By performing single-nucleus RNA sequencing of sinus node biopsies, we attribute measured protein abundances to specific cell types. The data reveal significant differences in ion channels responsible for the membrane clock, but not in Ca2+ clock proteins, suggesting that the membrane clock underpins pacemaking. Consistently, incorporation of ion channel expression differences into a biophysically-detailed atrial action potential model result in pacemaking and a sinus node-like action potential. Combining our quantitative proteomics data with computational modeling, we estimate ion channel copy numbers for sinus node myocytes. Our findings provide detailed insights into the unique molecular make-up of the cardiac pacemaker. The sinus node generates rhythmic heartbeat but the molecular basis of pacemaking is still under debate. Here, the authors combine quantitative proteomics and single-nucleus transcriptomics to characterize the molecular composition of the sinus node and provide insights into the underpinnings of pacemaking.
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Affiliation(s)
- Nora Linscheid
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, København, 2200, Denmark
| | | | - Pi Camilla Poulsen
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, København, 2200, Denmark
| | - Shanzhuo Zhang
- School of Computer Science and Technology, Harbin Institute of Technology, Haerbin Shi, 150006, China
| | - Maren Schrölkamp
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, København, 2200, Denmark
| | - Kristoffer Lihme Egerod
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, København, 2200, Denmark
| | - Jonatan James Thompson
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, København, 2200, Denmark
| | - Ashraf Kitmitto
- Division of Cardiovascular Sciences, University of Manchester, Manchester, M13 9NT, UK
| | - Gina Galli
- Division of Cardiovascular Sciences, University of Manchester, Manchester, M13 9NT, UK
| | - Martin J Humphries
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Biology, Medicine & Health, University of Manchester, Manchester, M13 9PT, UK
| | - Henggui Zhang
- Biological Physics Group, School of Physics & Astronomy, University of Manchester, Manchester, M13 9PL, UK
| | - Tune H Pers
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, København, 2200, Denmark
| | - Jesper Velgaard Olsen
- The Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, København, 2200, Denmark
| | - Mark Boyett
- Division of Cardiovascular Sciences, University of Manchester, Manchester, M13 9NT, UK.
| | - Alicia Lundby
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, København, 2200, Denmark. .,The Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, København, 2200, Denmark.
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22
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Emdal KB, Pedersen AK, Bekker-Jensen DB, Lundby A, Claeys S, De Preter K, Speleman F, Francavilla C, Olsen JV. Integrated proximal proteomics reveals IRS2 as a determinant of cell survival in ALK-driven neuroblastoma. Sci Signal 2018; 11:11/557/eaap9752. [PMID: 30459283 DOI: 10.1126/scisignal.aap9752] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Oncogenic anaplastic lymphoma kinase (ALK) is one of the few druggable targets in neuroblastoma, and therapy resistance to ALK-targeting tyrosine kinase inhibitors (TKIs) comprises an inevitable clinical challenge. Therefore, a better understanding of the oncogenic signaling network rewiring driven by ALK is necessary to improve and guide future therapies. Here, we performed quantitative mass spectrometry-based proteomics on neuroblastoma cells treated with one of three clinically relevant ALK TKIs (crizotinib, LDK378, or lorlatinib) or an experimentally used ALK TKI (TAE684) to unravel aberrant ALK signaling pathways. Our integrated proximal proteomics (IPP) strategy included multiple signaling layers, such as the ALK interactome, phosphotyrosine interactome, phosphoproteome, and proteome. We identified the signaling adaptor protein IRS2 (insulin receptor substrate 2) as a major ALK target and an ALK TKI-sensitive signaling node in neuroblastoma cells driven by oncogenic ALK. TKI treatment decreased the recruitment of IRS2 to ALK and reduced the tyrosine phosphorylation of IRS2. Furthermore, siRNA-mediated depletion of ALK or IRS2 decreased the phosphorylation of the survival-promoting kinase Akt and of a downstream target, the transcription factor FoxO3, and reduced the viability of three ALK-driven neuroblastoma cell lines. Collectively, our IPP analysis provides insight into the proximal architecture of oncogenic ALK signaling by revealing IRS2 as an adaptor protein that links ALK to neuroblastoma cell survival through the Akt-FoxO3 signaling axis.
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Affiliation(s)
- Kristina B Emdal
- Proteomics Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, DK-2200 Copenhagen, Denmark.,Department of Biological Engineering and David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Anna-Kathrine Pedersen
- Proteomics Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, DK-2200 Copenhagen, Denmark
| | - Dorte B Bekker-Jensen
- Proteomics Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, DK-2200 Copenhagen, Denmark
| | - Alicia Lundby
- Proteomics Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, DK-2200 Copenhagen, Denmark.,Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, DK-2200 Copenhagen, Denmark
| | - Shana Claeys
- Center for Medical Genetics Ghent, Cancer Research Institute Ghent, De Pintelaan 185, 9000 Ghent, Belgium
| | - Katleen De Preter
- Center for Medical Genetics Ghent, Cancer Research Institute Ghent, De Pintelaan 185, 9000 Ghent, Belgium
| | - Frank Speleman
- Center for Medical Genetics Ghent, Cancer Research Institute Ghent, De Pintelaan 185, 9000 Ghent, Belgium
| | - Chiara Francavilla
- Proteomics Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, DK-2200 Copenhagen, Denmark. .,Division of Molecular and Cellular Functions, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PL, UK
| | - Jesper V Olsen
- Proteomics Program, Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3B, DK-2200 Copenhagen, Denmark.
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23
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Ahlberg G, Refsgaard L, Lundegaard PR, Andreasen L, Ranthe MF, Linscheid N, Nielsen JB, Melbye M, Haunsø S, Sajadieh A, Camp L, Olesen SP, Rasmussen S, Lundby A, Ellinor PT, Holst AG, Svendsen JH, Olesen MS. Rare truncating variants in the sarcomeric protein titin associate with familial and early-onset atrial fibrillation. Nat Commun 2018; 9:4316. [PMID: 30333491 PMCID: PMC6193003 DOI: 10.1038/s41467-018-06618-y] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 09/17/2018] [Indexed: 12/13/2022] Open
Abstract
A family history of atrial fibrillation constitutes a substantial risk of developing the disease, however, the pathogenesis of this complex disease is poorly understood. We perform whole-exome sequencing on 24 families with at least three family members diagnosed with atrial fibrillation (AF) and find that titin-truncating variants (TTNtv) are significantly enriched in these patients (P = 1.76 × 10−6). This finding is replicated in an independent cohort of early-onset lone AF patients (n = 399; odds ratio = 36.8; P = 4.13 × 10−6). A CRISPR/Cas9 modified zebrafish carrying a truncating variant of titin is used to investigate TTNtv effect in atrial development. We observe compromised assembly of the sarcomere in both atria and ventricle, longer PR interval, and heterozygous adult zebrafish have a higher degree of fibrosis in the atria, indicating that TTNtv are important risk factors for AF. This aligns with the early onset of the disease and adds an important dimension to the understanding of the molecular predisposition for AF. Common genetic variants in structural proteins contribute to risk of atrial fibrillation (AF). Here, using whole-exome sequencing, the authors identify rare truncating variants in TTN that associate with familial and early-onset AF and show defects in cardiac sarcomere assembly in ttn.2-mutant zebrafish.
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Affiliation(s)
- Gustav Ahlberg
- Laboratory for Molecular Cardiology, Department of Cardiology, The Heart Centre, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, 2100 Ø, Denmark.,Department of Biomedical Sciences, University of Copenhagen, Copenhagen, 2200 N, Denmark
| | - Lena Refsgaard
- Laboratory for Molecular Cardiology, Department of Cardiology, The Heart Centre, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, 2100 Ø, Denmark.,Department of Biomedical Sciences, University of Copenhagen, Copenhagen, 2200 N, Denmark
| | - Pia R Lundegaard
- Laboratory for Molecular Cardiology, Department of Cardiology, The Heart Centre, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, 2100 Ø, Denmark.,Department of Biomedical Sciences, University of Copenhagen, Copenhagen, 2200 N, Denmark
| | - Laura Andreasen
- Laboratory for Molecular Cardiology, Department of Cardiology, The Heart Centre, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, 2100 Ø, Denmark.,Department of Biomedical Sciences, University of Copenhagen, Copenhagen, 2200 N, Denmark
| | - Mattis F Ranthe
- Department of Epidemiology Research, Statens Serum Institute, Copenhagen, 2300 S, Denmark
| | - Nora Linscheid
- Cardiac Proteomics Group, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, 2200 N, Denmark.,Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, 2200 N, Denmark
| | - Jonas B Nielsen
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, 2200 N, Denmark
| | - Mads Melbye
- Department of Epidemiology Research, Statens Serum Institute, Copenhagen, 2300 S, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, 2200 N, Denmark.,Department of Medicine, Stanford University School of Medicine, Stanford, 94305, CA, USA
| | - Stig Haunsø
- Laboratory for Molecular Cardiology, Department of Cardiology, The Heart Centre, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, 2100 Ø, Denmark
| | - Ahmad Sajadieh
- Department of Cardiology, Copenhagen University Hospital, Bispebjerg, Copenhagen, 2400, Denmark
| | - Lu Camp
- The Lundbeck Foundation Centre for Applied Medical Genomics in Personalized Disease Prediction, Prevention and Care, Copenhagen, 2200 N, Denmark
| | - Søren-Peter Olesen
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, 2200 N, Denmark
| | - Simon Rasmussen
- Department of Bio and Health Informatics, Technical University of Denmark, Kgs, Lyngby, 2800, Denmark
| | - Alicia Lundby
- Cardiac Proteomics Group, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, 2200 N, Denmark.,Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, 2200 N, Denmark
| | - Patrick T Ellinor
- Cardiovascular Research Centre, Massachusetts General Hospital, Boston, 02114, MA, USA.,Program in Population and Medical Genetics, The Broad Institute of Harvard and MIT, Cambridge, 02114, MA, USA
| | - Anders G Holst
- Laboratory for Molecular Cardiology, Department of Cardiology, The Heart Centre, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, 2100 Ø, Denmark
| | - Jesper H Svendsen
- Laboratory for Molecular Cardiology, Department of Cardiology, The Heart Centre, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, 2100 Ø, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, 2200 N, Denmark
| | - Morten S Olesen
- Laboratory for Molecular Cardiology, Department of Cardiology, The Heart Centre, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, 2100 Ø, Denmark. .,Department of Biomedical Sciences, University of Copenhagen, Copenhagen, 2200 N, Denmark.
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24
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Steffensen AB, Bomholtz SH, Andersen MN, Olsen JV, Mutsaers N, Lundegaard PR, Lundby A, Schmitt N. PKD Phosphorylation as Novel Pathway of KV11.1 Regulation. Cell Physiol Biochem 2018; 47:1742-1750. [PMID: 29949809 DOI: 10.1159/000491007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 03/23/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS The voltage-gated potassium channel KV11.1 has been originally cloned from the brain and is expressed in a variety of tissues. The role of phosphorylation for channel function is a matter of debate. In this study, we aimed to elucidate the extent and role of protein kinase D mediated phosphorylation. METHODS We employed mass spectrometry, whole-cell patch clamp electrophysiology, confocal microscopy, site-directed mutagenesis, and western blotting. RESULTS Using brain tissue from rat and mouse, we mapped several phosphorylated KV11.1 residues by LC-MS mass spectrometry and identified protein kinase D (PKD1) as possible regulatory kinase. Co-expression of KV11.1 with PKD1 reduced current amplitudes without altering protein levels or surface expression of the channel. Based on LC-MS results from in vivo and HEK293 cell experiments we chose four KV11.1 mutant candidates for further functional analysis. Ablation of the putative PKD phosphorylation site in the mutant S284A increased the maximal current indicating S284 as a main PKD target in KV11.1. CONCLUSIONS Our data might help mitigating a long-standing controversy in the field regarding PKC regulation of KV11.1. We propose that PKD1 mediates the PKC effects on KV11.1 and we found that PKD targets S284 in the N-terminus of the channel.
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Affiliation(s)
- Annette Buur Steffensen
- Danish National Research Foundation Centre for Cardiac Arrhythmia and Dept. of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Sofia Hammami Bomholtz
- Danish National Research Foundation Centre for Cardiac Arrhythmia and Dept. of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Martin Nybo Andersen
- Danish National Research Foundation Centre for Cardiac Arrhythmia and Dept. of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jesper Velgaard Olsen
- Novo Nordisk Foundation Center for Protein Research, Department for Proteomics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Nancy Mutsaers
- Danish National Research Foundation Centre for Cardiac Arrhythmia and Dept. of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Pia Rengtved Lundegaard
- Danish National Research Foundation Centre for Cardiac Arrhythmia and Dept. of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Alicia Lundby
- Danish National Research Foundation Centre for Cardiac Arrhythmia and Dept. of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Novo Nordisk Foundation Center for Protein Research, Department for Proteomics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Nicole Schmitt
- Danish National Research Foundation Centre for Cardiac Arrhythmia and Dept. of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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25
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Forghany Z, Robertson F, Lundby A, Olsen JV, Baker DA. Control of endothelial cell tube formation by Notch ligand intracellular domain interactions with activator protein 1 (AP-1). J Biol Chem 2017; 293:1229-1242. [PMID: 29196606 DOI: 10.1074/jbc.m117.819045] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 11/30/2017] [Indexed: 01/08/2023] Open
Abstract
Notch signaling is a ubiquitous signal transduction pathway found in most if not all metazoan cell types characterized to date. It is indispensable for cell differentiation as well as tissue growth, tissue remodeling, and apoptosis. Although the canonical Notch signaling pathway is well characterized, accumulating evidence points to the existence of multiple, less well-defined layers of regulation. In this study, we investigated the function of the intracellular domain (ICD) of the Notch ligand Delta-like 4 (DLL4). We provide evidence that the DLL4 ICD is required for normal DLL4 subcellular localization. We further show that it is cleaved and interacts with the JUN proto-oncogene, which forms part of the activator protein 1 (AP-1) transcription factor complex. Mechanistically, the DLL4 ICD inhibited JUN binding to DNA and thereby controlled the expression of JUN target genes, including DLL4 Our work further demonstrated that JUN strongly stimulates endothelial cell tube formation and that DLL4 constrains this process. These results raise the possibility that Notch/DLL4 signaling is bidirectional and suggest that the DLL4 ICD could represent a point of cross-talk between Notch and receptor tyrosine kinase (RTK) signaling.
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Affiliation(s)
- Zary Forghany
- From the Department of Molecular Cell Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands and
| | - Francesca Robertson
- From the Department of Molecular Cell Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands and
| | - Alicia Lundby
- Novo Nordisk Foundation Center for Protein Research and.,the Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen N, Denmark
| | | | - David A Baker
- From the Department of Molecular Cell Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands and
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26
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D'Souza A, Pearman CM, Wang Y, Nakao S, Logantha SJRJ, Cox C, Bennett H, Zhang Y, Johnsen AB, Linscheid N, Poulsen PC, Elliott J, Coulson J, McPhee J, Robertson A, da Costa Martins PA, Kitmitto A, Wisløff U, Cartwright EJ, Monfredi O, Lundby A, Dobrzynski H, Oceandy D, Morris GM, Boyett MR. Targeting miR-423-5p Reverses Exercise Training-Induced HCN4 Channel Remodeling and Sinus Bradycardia. Circ Res 2017; 121:1058-1068. [PMID: 28821541 PMCID: PMC5636198 DOI: 10.1161/circresaha.117.311607] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 08/15/2017] [Accepted: 08/17/2017] [Indexed: 11/30/2022]
Abstract
Supplemental Digital Content is available in the text. Rationale: Downregulation of the pacemaking ion channel, HCN4 (hyperpolarization-activated cyclic nucleotide gated channel 4), and the corresponding ionic current, If, underlies exercise training–induced sinus bradycardia in rodents. If this occurs in humans, it could explain the increased incidence of bradyarrhythmias in veteran athletes, and it will be important to understand the underlying processes. Objective: To test the role of HCN4 in the training-induced bradycardia in human athletes and investigate the role of microRNAs (miRs) in the repression of HCN4. Methods and Results: As in rodents, the intrinsic heart rate was significantly lower in human athletes than in nonathletes, and in all subjects, the rate-lowering effect of the HCN selective blocker, ivabradine, was significantly correlated with the intrinsic heart rate, consistent with HCN repression in athletes. Next-generation sequencing and quantitative real-time reverse transcription polymerase chain reaction showed remodeling of miRs in the sinus node of swim-trained mice. Computational predictions highlighted a prominent role for miR-423-5p. Interaction between miR-423-5p and HCN4 was confirmed by a dose-dependent reduction in HCN4 3′-untranslated region luciferase reporter activity on cotransfection with precursor miR-423-5p (abolished by mutation of predicted recognition elements). Knockdown of miR-423-5p with anti-miR-423-5p reversed training-induced bradycardia via rescue of HCN4 and If. Further experiments showed that in the sinus node of swim-trained mice, upregulation of miR-423-5p (intronic miR) and its host gene, NSRP1, is driven by an upregulation of the transcription factor Nkx2.5. Conclusions: HCN remodeling likely occurs in human athletes, as well as in rodent models. miR-423-5p contributes to training-induced bradycardia by targeting HCN4. This work presents the first evidence of miR control of HCN4 and heart rate. miR-423-5p could be a therapeutic target for pathological sinus node dysfunction in veteran athletes.
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Affiliation(s)
- Alicia D'Souza
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Charles M Pearman
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Yanwen Wang
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Shu Nakao
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Sunil Jit R J Logantha
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Charlotte Cox
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Hayley Bennett
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Yu Zhang
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Anne Berit Johnsen
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Nora Linscheid
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Pi Camilla Poulsen
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Jonathan Elliott
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Jessica Coulson
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Jamie McPhee
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Abigail Robertson
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Paula A da Costa Martins
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Ashraf Kitmitto
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Ulrik Wisløff
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Elizabeth J Cartwright
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Oliver Monfredi
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Alicia Lundby
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Halina Dobrzynski
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Delvac Oceandy
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Gwilym M Morris
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.)
| | - Mark R Boyett
- From the Division of Cardiovascular Sciences, University of Manchester, United Kingdom (A.D., C.M.P., Y.W., S.N., S.J.R.J.L., C.C., H.B., Y.Z., J.E., A.R., A.K., E.J.C., O.M., H.D., D.O., G.M.M., M.R.B.); K.G. Jebsen Center for Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway (A.B.J., U.W.); Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Denmark (N.L., P.C.P., A.L.); School of Healthcare Science, Manchester Metropolitan University, United Kingdom (J.C., J.M.); Department of Cardiology, CARIM School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands (P.A.d.C.M.); and School of Human Movement & Nutrition Sciences, University of Queensland, Australia (U.W.).
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Phung B, Kazi JU, Lundby A, Bergsteinsdottir K, Sun J, Goding CR, Jönsson G, Olsen JV, Steingrímsson E, Rönnstrand L. KIT D816V Induces SRC-Mediated Tyrosine Phosphorylation of MITF and Altered Transcription Program in Melanoma. Mol Cancer Res 2017; 15:1265-1274. [PMID: 28584020 DOI: 10.1158/1541-7786.mcr-17-0149] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 04/25/2017] [Accepted: 05/23/2017] [Indexed: 11/16/2022]
Abstract
The oncogenic D816V mutation of the KIT receptor is well characterized in systemic mastocytosis and acute myeloid leukemia. Although KITD816V has been found in melanoma, its function and involvement in this malignancy is not understood. Here we show that KITD816V induces tyrosine phosphorylation of MITF through a triple protein complex formation between KIT, MITF, and SRC family kinases. In turn, phosphorylated MITF activates target genes that are involved in melanoma proliferation, cell-cycle progression, suppression of senescence, survival, and invasion. By blocking the triple protein complex formation, thus preventing MITF phosphorylation, the cells became hypersensitive to SRC inhibitors. We have therefore delineated a mechanism behind the oncogenic effects of KITD816V in melanoma and provided a rationale for the heightened SRC inhibitor sensitivity in KITD816V transformed cells.Implications: This study demonstrates that an oncogenic tyrosine kinase mutant, KITD816V, can alter the transcriptional program of the transcription factor MITF in melanoma Mol Cancer Res; 15(9); 1265-74. ©2017 AACR.
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Affiliation(s)
- Bengt Phung
- Division of Translational Cancer Research, Lund Stem Cell Center, Lund University, Medicon Village and Department of Oncology, Skåne University Hospital, Lund, Sweden.,Department of Biochemistry and Molecular Biology, Biomedical Center, Faculty of Medicine, University of Iceland, Reykjavik, Iceland.,Melanoma Genomics, Division of Oncology and Pathology, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Julhash U Kazi
- Division of Translational Cancer Research, Lund Stem Cell Center, Lund University, Medicon Village and Department of Oncology, Skåne University Hospital, Lund, Sweden
| | - Alicia Lundby
- Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Copenhagen, Denmark
| | - Kristin Bergsteinsdottir
- Department of Biochemistry and Molecular Biology, Biomedical Center, Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Jianmin Sun
- Division of Translational Cancer Research, Lund Stem Cell Center, Lund University, Medicon Village and Department of Oncology, Skåne University Hospital, Lund, Sweden
| | - Colin R Goding
- Ludwig Institute for Cancer Research, University of Oxford, Oxford, United Kingdom
| | - Göran Jönsson
- Melanoma Genomics, Division of Oncology and Pathology, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Jesper V Olsen
- Faculty of Health Sciences, NNF Center for Protein Research, University of Copenhagen, Copenhagen, Denmark
| | - Eiríkur Steingrímsson
- Department of Biochemistry and Molecular Biology, Biomedical Center, Faculty of Medicine, University of Iceland, Reykjavik, Iceland.
| | - Lars Rönnstrand
- Division of Translational Cancer Research, Lund Stem Cell Center, Lund University, Medicon Village and Department of Oncology, Skåne University Hospital, Lund, Sweden.
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Phung B, Kazi JU, Lundby A, Bergsteinsdottir K, Sun J, Goding CR, Jönsson G, Olsen JV, Steingrímsson E, Rönnstrand L. Abstract 1127: KIT/D816V induces SRC-mediated tyrosine phosphorylation of MITF and altered transcription program in melanoma. Cancer Res 2016. [DOI: 10.1158/1538-7445.am2016-1127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The oncogenic D816V mutation of the KIT receptor is well characterized in systemic mastocytosis and acute myeloid leukemia. Although KITD816V has been found in melanoma, its function and involvement in this malignancy is not understood. Here we show that KITD816V induces tyrosine phosphorylation of the microphthalmia-associated transcription factor (MITF) through a triple protein complex formation between KIT, MITF and SRC family kinases. In turn, phosphorylated MITF activates target genes that are involved in melanoma proliferation, cell cycle progression, suppression of senescence, survival and invasion. By blocking the triple protein complex formation, thus preventing MITF phosphorylation, the cells become hypersensitive to SRC inhibitors. We have therefore delineated the mechanism behind the oncogenic effects of KITD816V in melanoma and provide a rationale for testing SRC family kinase inhibitors to treat KITD816V-transformed melanomas.
Citation Format: Bengt Phung, Julhash U. Kazi, Alicia Lundby, Kristin Bergsteinsdottir, Jianmin Sun, Colin R. Goding, Göran Jönsson, Jesper V. Olsen, Eiríkur Steingrímsson, Lars Rönnstrand. KIT/D816V induces SRC-mediated tyrosine phosphorylation of MITF and altered transcription program in melanoma. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 1127.
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Affiliation(s)
- Bengt Phung
- 1Div. of Translational Cancer Research, Dept of Laboratory Medicine, Lund University, Lund, Sweden
| | - Julhash U. Kazi
- 1Div. of Translational Cancer Research, Dept of Laboratory Medicine, Lund University, Lund, Sweden
| | - Alicia Lundby
- 2NNF Center for Protein Research, University of Copenhagen, Copenhagen, Denmark
| | | | - Jianmin Sun
- 1Div. of Translational Cancer Research, Dept of Laboratory Medicine, Lund University, Lund, Sweden
| | - Colin R. Goding
- 4Ludwig Institute for Cancer Research, University of Oxford, Oxford, United Kingdom
| | - Göran Jönsson
- 5Melanoma Genomics, Div. of Oncology and Pathology, Dept. of Clin. Sciences, Lund, Sweden
| | - Jesper V. Olsen
- 2NNF Center for Protein Research, University of Copenhagen, Copenhagen, Denmark
| | - Eiríkur Steingrímsson
- 3Department of Biochemistry and Molecular Biology, University of Iceland, Reykjavik, Iceland
| | - Lars Rönnstrand
- 1Div. of Translational Cancer Research, Dept of Laboratory Medicine, Lund University, Lund, Sweden
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Andersen MN, Hefting LL, Steffensen AB, Schmitt N, Olesen SP, Olsen JV, Lundby A, Rasmussen HB. Protein kinase A stimulates Kv7.1 surface expression by regulating Nedd4-2-dependent endocytic trafficking. Am J Physiol Cell Physiol 2015; 309:C693-706. [PMID: 26405101 DOI: 10.1152/ajpcell.00383.2014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 09/15/2015] [Indexed: 11/22/2022]
Abstract
The potassium channel Kv7.1 plays critical physiological roles in both heart and epithelial tissues. In heart, Kv7.1 and the accessory subunit KCNE1 forms the slowly activating delayed-rectifier potassium current current, which is enhanced by protein kinase A (PKA)-mediated phosphorylation. The observed current increase requires both phosphorylation of Kv7.1 and the presence of KCNE1. However, PKA also stimulates Kv7.1 currents in epithelial tissues, such as colon, where the channel does not coassemble with KCNE1. Here, we demonstrate that PKA activity significantly impacts the subcellular localization of Kv7.1 in Madin-Darby canine kidney cells. While PKA inhibition reduced the fraction of channels at the cell surface, PKA activation increased it. We show that PKA inhibition led to intracellular accumulation of Kv7.1 in late endosomes/lysosomes. By mass spectroscopy we identified eight phosphorylated residues on Kv7.1, however, none appeared to play a role in the observed response. Instead, we found that PKA acted by regulating endocytic trafficking involving the ubiquitin ligase Nedd4-2. We show that a Nedd4-2-resistant Kv7.1-mutant displayed significantly reduced intracellular accumulation upon PKA inhibition. Similar effects were observed upon siRNA knockdown of Nedd4-2. However, although Nedd4-2 is known to regulate Kv7.1 by ubiquitylation, biochemical analyses demonstrated that PKA did not influence the amount of Nedd4-2 bound to Kv7.1 or the ubiquitylation level of the channel. This suggests that PKA influences Nedd4-2-dependent Kv7.1 transport though a different molecular mechanism. In summary, we identify a novel mechanism whereby PKA can increase Kv7.1 current levels, namely by regulating Nedd4-2-dependent Kv7.1 transport.
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Affiliation(s)
- Martin N Andersen
- The Danish National Research Foundation Center for Cardiac Arrhythmia and The Faculty of Health and Medical Sciences, Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark; and
| | - Louise L Hefting
- The Danish National Research Foundation Center for Cardiac Arrhythmia and The Faculty of Health and Medical Sciences, Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark; and
| | - Annette B Steffensen
- The Danish National Research Foundation Center for Cardiac Arrhythmia and The Faculty of Health and Medical Sciences, Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark; and
| | - Nicole Schmitt
- The Danish National Research Foundation Center for Cardiac Arrhythmia and The Faculty of Health and Medical Sciences, Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark; and
| | - Søren-Peter Olesen
- The Danish National Research Foundation Center for Cardiac Arrhythmia and The Faculty of Health and Medical Sciences, Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark; and
| | - Jesper V Olsen
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Alicia Lundby
- The Danish National Research Foundation Center for Cardiac Arrhythmia and The Faculty of Health and Medical Sciences, Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark; and Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Hanne B Rasmussen
- The Danish National Research Foundation Center for Cardiac Arrhythmia and The Faculty of Health and Medical Sciences, Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark; and
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Arking DE, Pulit SL, Crotti L, van der Harst P, Munroe PB, Koopmann TT, Sotoodehnia N, Rossin EJ, Morley M, Wang X, Johnson AD, Lundby A, Gudbjartsson DF, Noseworthy PA, Eijgelsheim M, Bradford Y, Tarasov KV, Dörr M, Müller-Nurasyid M, Lahtinen AM, Nolte IM, Smith AV, Bis JC, Isaacs A, Newhouse SJ, Evans DS, Post WS, Waggott D, Lyytikäinen LP, Hicks AA, Eisele L, Ellinghaus D, Hayward C, Navarro P, Ulivi S, Tanaka T, Tester DJ, Chatel S, Gustafsson S, Kumari M, Morris RW, Naluai ÅT, Padmanabhan S, Kluttig A, Strohmer B, Panayiotou AG, Torres M, Knoflach M, Hubacek JA, Slowikowski K, Raychaudhuri S, Kumar RD, Harris TB, Launer LJ, Shuldiner AR, Alonso A, Bader JS, Ehret G, Huang H, Kao WHL, Strait JB, Macfarlane PW, Brown M, Caulfield MJ, Samani NJ, Kronenberg F, Willeit J, Smith JG, Greiser KH, Meyer Zu Schwabedissen H, Werdan K, Carella M, Zelante L, Heckbert SR, Psaty BM, Rotter JI, Kolcic I, Polašek O, Wright AF, Griffin M, Daly MJ, Arnar DO, Hólm H, Thorsteinsdottir U, Denny JC, Roden DM, Zuvich RL, Emilsson V, Plump AS, Larson MG, O'Donnell CJ, Yin X, Bobbo M, D'Adamo AP, Iorio A, Sinagra G, Carracedo A, Cummings SR, Nalls MA, Jula A, Kontula KK, Marjamaa A, Oikarinen L, Perola M, Porthan K, Erbel R, Hoffmann P, Jöckel KH, Kälsch H, Nöthen MM, den Hoed M, Loos RJF, Thelle DS, Gieger C, Meitinger T, Perz S, Peters A, Prucha H, Sinner MF, Waldenberger M, de Boer RA, Franke L, van der Vleuten PA, Beckmann BM, Martens E, Bardai A, Hofman N, Wilde AAM, Behr ER, Dalageorgou C, Giudicessi JR, Medeiros-Domingo A, Barc J, Kyndt F, Probst V, Ghidoni A, Insolia R, Hamilton RM, Scherer SW, Brandimarto J, Margulies K, Moravec CE, del Greco M F, Fuchsberger C, O'Connell JR, Lee WK, Watt GCM, Campbell H, Wild SH, El Mokhtari NE, Frey N, Asselbergs FW, Mateo Leach I, Navis G, van den Berg MP, van Veldhuisen DJ, Kellis M, Krijthe BP, Franco OH, Hofman A, Kors JA, Uitterlinden AG, Witteman JCM, Kedenko L, Lamina C, Oostra BA, Abecasis GR, Lakatta EG, Mulas A, Orrú M, Schlessinger D, Uda M, Markus MRP, Völker U, Snieder H, Spector TD, Ärnlöv J, Lind L, Sundström J, Syvänen AC, Kivimaki M, Kähönen M, Mononen N, Raitakari OT, Viikari JS, Adamkova V, Kiechl S, Brion M, Nicolaides AN, Paulweber B, Haerting J, Dominiczak AF, Nyberg F, Whincup PH, Hingorani AD, Schott JJ, Bezzina CR, Ingelsson E, Ferrucci L, Gasparini P, Wilson JF, Rudan I, Franke A, Mühleisen TW, Pramstaller PP, Lehtimäki TJ, Paterson AD, Parsa A, Liu Y, van Duijn CM, Siscovick DS, Gudnason V, Jamshidi Y, Salomaa V, Felix SB, Sanna S, Ritchie MD, Stricker BH, Stefansson K, Boyer LA, Cappola TP, Olsen JV, Lage K, Schwartz PJ, Kääb S, Chakravarti A, Ackerman MJ, Pfeufer A, de Bakker PIW, Newton-Cheh C. Genetic association study of QT interval highlights role for calcium signaling pathways in myocardial repolarization. Nat Genet 2014; 46:826-36. [PMID: 24952745 PMCID: PMC4124521 DOI: 10.1038/ng.3014] [Citation(s) in RCA: 228] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 05/29/2014] [Indexed: 02/07/2023]
Abstract
The QT interval, an electrocardiographic measure reflecting myocardial repolarization, is a heritable trait. QT prolongation is a risk factor for ventricular arrhythmias and sudden cardiac death (SCD) and could indicate the presence of the potentially lethal Mendelian Long QT Syndrome (LQTS). Using a genome-wide association and replication study in up to 100,000 individuals we identified 35 common variant QT interval loci, that collectively explain ∼8-10% of QT variation and highlight the importance of calcium regulation in myocardial repolarization. Rare variant analysis of 6 novel QT loci in 298 unrelated LQTS probands identified coding variants not found in controls but of uncertain causality and therefore requiring validation. Several newly identified loci encode for proteins that physically interact with other recognized repolarization proteins. Our integration of common variant association, expression and orthogonal protein-protein interaction screens provides new insights into cardiac electrophysiology and identifies novel candidate genes for ventricular arrhythmias, LQTS,and SCD.
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Affiliation(s)
- Dan E Arking
- 1] Center for Complex Disease Genomics, McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. [2]
| | - Sara L Pulit
- 1] Center for Human Genetic Research, Massachusetts General Hospital, Boston, Massachusetts, USA. [2] Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, Massachusetts, USA. [3] Department of Medical Genetics, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands. [4]
| | - Lia Crotti
- 1] Department of Molecular Medicine, Section of Cardiology, University of Pavia, Pavia, Italy. [2] Center for Cardiac Arrhythmias of Genetic Origin, Istituto di Ricerca e Cura a Carattere Scientifico Istituto Auxologico Italiano, Milan, Italy. [3] Institute of Human Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Pim van der Harst
- 1] Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. [2] Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Patricia B Munroe
- 1] Clinical Pharmacology, William Harvey Research Institute, Barts and the London School of Medicine, Queen Mary University of London, London, UK. [2] Barts and the London Genome Centre, William Harvey Research Institute, Barts and the London School of Medicine, Queen Mary University of London, London, UK
| | - Tamara T Koopmann
- Heart Failure Research Center, Department of Clinical and Experimental Cardiology, Academic Medical Center, Amsterdam, The Netherlands
| | - Nona Sotoodehnia
- 1] Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, Washington, USA. [2] Cardiology Division, University of Washington, Seattle, Washington, USA
| | - Elizabeth J Rossin
- 1] Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, Massachusetts, USA. [2] Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, Massachusetts, USA. [3] Harvard Medical School, Boston, Massachusetts, USA
| | - Michael Morley
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Xinchen Wang
- 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA. [2] Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA. [3] Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Andrew D Johnson
- National Heart, Lung, and Blood Institute (NHLBI) Framingham Heart Study, Framingham, Massachusetts, USA
| | - Alicia Lundby
- 1] Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, Massachusetts, USA. [2] Novo Nordisk Foundation Center for Protein Research, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark. [3] The Danish National Research Foundation Centre for Cardiac Arrhythmia, University of Copenhagen, Copenhagen, Denmark
| | | | - Peter A Noseworthy
- 1] Center for Human Genetic Research, Massachusetts General Hospital, Boston, Massachusetts, USA. [2] Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, Massachusetts, USA. [3] Cardiovascular Research Center, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Mark Eijgelsheim
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Yuki Bradford
- Center for Human Genetics Research, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Kirill V Tarasov
- Laboratory of Cardiovascular Sciences, Human Cardiovascular Studies Unit, National Institute on Aging, US National Institutes of Health, Baltimore, Maryland, USA
| | - Marcus Dörr
- 1] Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany. [2] DZHK (German Center for Cardiovascular Research), partner site Greifswald, Greifswald, Germany
| | - Martina Müller-Nurasyid
- 1] Department of Medicine I, University Hospital Munich, Ludwig Maximilians Universität, Munich, Germany. [2] Institute of Medical Informatics, Biometry and Epidemiology, Chair of Epidemiology, Ludwig Maximilians Universität, Munich, Germany. [3] Institute of Genetic Epidemiology, Helmholtz Zentrum Munich-German Research Center for Environmental Health, Neuherberg, Germany. [4] Institute of Medical Informatics, Biometry and Epidemiology, Chair of Genetic Epidemiology, Ludwig Maximilians Universität, Munich, Germany. [5] DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Annukka M Lahtinen
- 1] Research Programs Unit, Molecular Medicine, University of Helsinki, Helsinki, Finland. [2] Department of Medicine, Helsinki University Central Hospital, Helsinki, Finland
| | - Ilja M Nolte
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Albert Vernon Smith
- 1] Icelandic Heart Association, Kopavogur, Iceland. [2] Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Joshua C Bis
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Aaron Isaacs
- Genetic Epidemiology Unit, Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Stephen J Newhouse
- Clinical Pharmacology, William Harvey Research Institute, Barts and the London School of Medicine, Queen Mary University of London, London, UK
| | - Daniel S Evans
- California Pacific Medical Center Research Institute, San Francisco, California, USA
| | - Wendy S Post
- 1] Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. [2] Department of Epidemiology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Daryl Waggott
- Informatics and Biocomputing Platform, Ontario Institute for Cancer Research, Toronto, Ontario, Canada
| | - Leo-Pekka Lyytikäinen
- Department of Clinical Chemistry, Fimlab Laboratories and University of Tampere School of Medicine, Tampere, Finland
| | - Andrew A Hicks
- Center for Biomedicine, European Academy Bozen/Bolzano (EURAC), Bolzano, Italy (affiliated institute of the University of Lübeck, Lübeck, Germany)
| | - Lewin Eisele
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Essen, Germany
| | - David Ellinghaus
- Institute of Clinical Molecular Biology, Christian Albrechts University of Kiel, Kiel, Germany
| | - Caroline Hayward
- Medical Research Council (MRC) Human Genetics Unit, Institute of Genetics and Molecular Medicine, Western General Hospital, Edinburgh, UK
| | - Pau Navarro
- Medical Research Council (MRC) Human Genetics Unit, Institute of Genetics and Molecular Medicine, Western General Hospital, Edinburgh, UK
| | - Sheila Ulivi
- Institute for Maternal and Child Health, "Burlo Garofolo" Trieste, Trieste, Italy
| | - Toshiko Tanaka
- Translational Gerontology Branch, National Institute on Aging, Baltimore, Maryland, USA
| | - David J Tester
- 1] Department of Pediatrics, Division of Pediatric Cardiology, Mayo Clinic, Rochester, Minnesota, USA. [2] Windland Smith Rice Sudden Death Genomics Laboratory, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA
| | - Stéphanie Chatel
- 1] Institut du Thorax, Centre Hospitalier Universitaire de Nantes, Université de Nantes, Nantes, France. [2] Institut du Thorax, INSERM UMR1087, CNRS UMR 6291, Université de Nantes, Nantes, France
| | - Stefan Gustafsson
- 1] Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden. [2] Department of Medical Sciences, Molecular Epidemiology and Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Meena Kumari
- Institute of Cardiovascular Science, University College London, London, UK
| | - Richard W Morris
- Department of Primary Care and Population Health, University College London, Royal Free Campus, London, UK
| | - Åsa T Naluai
- 1] Department of Medical and Clinical Genetics, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden. [2] Biobanking and Molecular Resource Infrastructure of Sweden (BBMRI), Gothenburg, Sweden
| | - Sandosh Padmanabhan
- BHF Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Alexander Kluttig
- Institute of Medical Epidemiology, Biostatistics and Informatics, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Bernhard Strohmer
- Second Department of Internal Medicine, Paracelsus Medical University/Salzburger Landeskliniken, Salzburg, Austria
| | - Andrie G Panayiotou
- 1] Cyprus International Institute for Environmental and Public Health in association with the Harvard School of Public Health, Cyprus University of Technology, Limassol, Cyprus. [2] Cyprus Cardiovascular and Educational Research Trust, Nicosia, Cyprus
| | - Maria Torres
- Grupo de Medicina Xenómica, Centro Nacional de Genotipado, Centro de Investigación Biomédica en Red de Enfermedades Raras, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Michael Knoflach
- Department of Neurology, Innsbruck Medical University, Innsbruck, Austria
| | - Jaroslav A Hubacek
- Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Kamil Slowikowski
- 1] Department of Medicine, Division of Genetics, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA. [2] Harvard Bioinformatics and Integrative Genomics, Boston, Massachusetts, USA
| | - Soumya Raychaudhuri
- 1] Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, Massachusetts, USA. [2] Department of Medicine, Division of Genetics, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA. [3] Partners HealthCare Center for Personalized Genetic Medicine, Boston, Massachusetts, USA. [4] Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Boston, Massachusetts, USA. [5] Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK
| | - Runjun D Kumar
- 1] Computational and Systems Biology Program, Division of Biology and Biomedical Sciences, Washington University in St. Louis, St. Louis, Missouri, USA. [2] Department of Medicine, Division of Oncology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Tamara B Harris
- Laboratory of Epidemiology, Demography and Biometry, National Institute on Aging, Bethesda, Maryland, USA
| | - Lenore J Launer
- Laboratory of Epidemiology, Demography and Biometry, National Institute on Aging, Bethesda, Maryland, USA
| | - Alan R Shuldiner
- 1] Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA. [2] Program for Personalized and Genomic Medicine, University of Maryland, Baltimore, Maryland, USA. [3] Geriatric Research and Education Clinical Center, Veterans Administration Medical Center, Baltimore, Maryland, USA
| | - Alvaro Alonso
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, Minnesota, USA
| | - Joel S Bader
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland, USA
| | - Georg Ehret
- Center for Complex Disease Genomics, McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Hailiang Huang
- 1] Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, Massachusetts, USA. [2] Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, Massachusetts, USA. [3] Harvard Medical School, Boston, Massachusetts, USA
| | - W H Linda Kao
- Department of Epidemiology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - James B Strait
- 1] Laboratory of Cardiovascular Sciences, Human Cardiovascular Studies Unit, National Institute on Aging, US National Institutes of Health, Baltimore, Maryland, USA. [2] Translational Gerontology Branch, National Institute on Aging, Baltimore, Maryland, USA
| | - Peter W Macfarlane
- Electrocardiology, University of Glasgow Institute of Cardiovascular and Medical Sciences, Royal Infirmary, Glasgow, UK
| | - Morris Brown
- Clinical Pharmacology, University of Cambridge, Addenbrooke's Hospital, Cambridge, UK
| | - Mark J Caulfield
- Clinical Pharmacology, William Harvey Research Institute, Barts and the London School of Medicine, Queen Mary University of London, London, UK
| | - Nilesh J Samani
- Department of Cardiovascular Science, University of Leicester, Glenfield Hospital, Leicester, UK
| | - Florian Kronenberg
- Division of Genetic Epidemiology, Innsbruck Medical University, Innsbruck, Austria
| | - Johann Willeit
- Department of Neurology, Innsbruck Medical University, Innsbruck, Austria
| | | | | | - J Gustav Smith
- 1] Center for Human Genetic Research, Massachusetts General Hospital, Boston, Massachusetts, USA. [2] Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, Massachusetts, USA. [3] Cardiovascular Research Center, Massachusetts General Hospital, Boston, Massachusetts, USA. [4] Department of Cardiology, Lund University, Lund, Sweden
| | - Karin H Greiser
- 1] Institute of Medical Epidemiology, Biostatistics and Informatics, Martin Luther University Halle-Wittenberg, Halle, Germany. [2] Division of Cancer Epidemiology, German Cancer Research Centre, Heidelberg, Germany
| | | | - Karl Werdan
- Department of Medicine III, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Massimo Carella
- Medical Genetics Unit, Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Leopoldo Zelante
- Medical Genetics Unit, Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Susan R Heckbert
- 1] Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, Washington, USA. [2] Department of Epidemiology, University of Washington, Seattle, Washington, USA
| | - Bruce M Psaty
- 1] Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, Washington, USA. [2] Department of Epidemiology, University of Washington, Seattle, Washington, USA. [3] Department of Health Services, University of Washington, Seattle, Washington, USA. [4] Group Health Research Institute, Group Health Cooperative, Seattle, Washington, USA. [5] Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Jerome I Rotter
- Institute for Translational Genomics and Population Sciences, Los Angeles Biomedical Research Institute at Harbor-University of California, Los Angeles (UCLA) Medical Center, Torrance, California, USA
| | - Ivana Kolcic
- Department of Public Health, Faculty of Medicine, University of Split, Split, Croatia
| | - Ozren Polašek
- Department of Public Health, Faculty of Medicine, University of Split, Split, Croatia
| | - Alan F Wright
- Medical Research Council (MRC) Human Genetics Unit, Institute of Genetics and Molecular Medicine, Western General Hospital, Edinburgh, UK
| | - Maura Griffin
- Vascular Screening and Diagnostic Centre, London, UK
| | - Mark J Daly
- 1] Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, Massachusetts, USA. [2] Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, Massachusetts, USA
| | | | - David O Arnar
- Department of Medicine, Division of Cardiology, Landspitali University Hospital, Reykjavik, Iceland
| | | | | | | | - Joshua C Denny
- 1] Department of Biomedical Informatics, Vanderbilt University School of Medicine, Nashville, Tennessee, USA. [2] Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Dan M Roden
- 1] Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA. [2] Department of Pharmacology, Vanderbilt University, Nashville, Tennessee, USA. [3] Office of Personalized Medicine, Vanderbilt University, Nashville, Tennessee, USA
| | - Rebecca L Zuvich
- Center for Human Genetics Research, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | | | | | - Martin G Larson
- 1] National Heart, Lung, and Blood Institute (NHLBI) Framingham Heart Study, Framingham, Massachusetts, USA. [2] Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts, USA. [3] Department of Mathematics and Statistics, Boston University, Boston, Massachusetts, USA
| | - Christopher J O'Donnell
- 1] National Heart, Lung, and Blood Institute (NHLBI) Framingham Heart Study, Framingham, Massachusetts, USA. [2] Cardiology Division, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Xiaoyan Yin
- 1] National Heart, Lung, and Blood Institute (NHLBI) Framingham Heart Study, Framingham, Massachusetts, USA. [2] Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts, USA
| | - Marco Bobbo
- Cardiovascular Department, Ospedali Riuniti and University of Trieste, Trieste, Italy
| | - Adamo P D'Adamo
- 1] Institute for Maternal and Child Health, "Burlo Garofolo" Trieste, Trieste, Italy. [2] Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Annamaria Iorio
- Cardiovascular Department, Ospedali Riuniti and University of Trieste, Trieste, Italy
| | - Gianfranco Sinagra
- Cardiovascular Department, Ospedali Riuniti and University of Trieste, Trieste, Italy
| | - Angel Carracedo
- 1] Grupo de Medicina Xenómica, Centro Nacional de Genotipado, Centro de Investigación Biomédica en Red de Enfermedades Raras, Universidade de Santiago de Compostela, Santiago de Compostela, Spain. [2] Fundación Publica Galega de Medicina Xenómica, Servicio Galego de Saude, Santiago de Compostela, Spain. [3] Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Steven R Cummings
- California Pacific Medical Center Research Institute, San Francisco, California, USA
| | - Michael A Nalls
- Laboratory of Neurogenetics, National Institute on Aging, US National Institutes of Health, Bethesda, Maryland, USA
| | - Antti Jula
- Chronic Disease Epidemiology and Prevention Unit, National Institute for Health and Welfare, Helsinki, Finland
| | - Kimmo K Kontula
- Department of Medicine, University of Helsinki, Helsinki, Finland
| | - Annukka Marjamaa
- 1] Research Programs Unit, Molecular Medicine, University of Helsinki, Helsinki, Finland. [2] Department of Medicine, Helsinki University Central Hospital, Helsinki, Finland
| | - Lasse Oikarinen
- Department of Medicine, Division of Cardiology, Helsinki University Central Hospital, Helsinki, Finland
| | - Markus Perola
- 1] Public Health Genomics Unit, National Institute for Health and Welfare, Helsinki, Finland. [2] Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland. [3] Estonian Genome Center, University of Tartu, Tartu, Estonia
| | - Kimmo Porthan
- Department of Medicine, Division of Cardiology, Helsinki University Central Hospital, Helsinki, Finland
| | - Raimund Erbel
- Department of Cardiology, University Hospital of Essen, University Duisburg-Essen, Essen, Germany
| | - Per Hoffmann
- 1] Department of Genomics, Life and Brain Center, University of Bonn, Bonn, Germany. [2] Institute of Human Genetics, University of Bonn, Bonn, Germany. [3] Division of Medical Genetics, University Hospital Basel, Basel, Switzerland. [4] Department of Biomedicine, University of Basel, Basel, Switzerland
| | - Karl-Heinz Jöckel
- Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, University Duisburg-Essen, Essen, Germany
| | - Hagen Kälsch
- Department of Cardiology, University Hospital of Essen, University Duisburg-Essen, Essen, Germany
| | - Markus M Nöthen
- 1] Department of Genomics, Life and Brain Center, University of Bonn, Bonn, Germany. [2] Institute of Human Genetics, University of Bonn, Bonn, Germany
| | | | - Marcel den Hoed
- 1] Department of Medical Sciences, Molecular Epidemiology and Science for Life Laboratory, Uppsala University, Uppsala, Sweden. [2] MRC Epidemiology Unit, University of Cambridge, Institute of Metabolic Science, Addenbrooke's Hospital, Cambridge, UK
| | - Ruth J F Loos
- 1] MRC Epidemiology Unit, University of Cambridge, Institute of Metabolic Science, Addenbrooke's Hospital, Cambridge, UK. [2] Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA. [3] Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Dag S Thelle
- 1] Department of Biostatistics, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway. [2] Department of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Christian Gieger
- Institute of Genetic Epidemiology, Helmholtz Zentrum Munich-German Research Center for Environmental Health, Neuherberg, Germany
| | - Thomas Meitinger
- 1] DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany. [2] Institute of Human Genetics, Technische Universität München, Munich, Germany. [3] Research Unit of Molecular Epidemiology, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
| | - Siegfried Perz
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
| | - Annette Peters
- 1] DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany. [2] Institute of Epidemiology II, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
| | - Hanna Prucha
- 1] Christine Kühne-Center for Allergy and Education, Munich, Germany. [2] Department of Dermatology and Allergy, Technische Universität München, Munich, Germany
| | - Moritz F Sinner
- Department of Medicine I, University Hospital Munich, Ludwig Maximilians Universität, Munich, Germany
| | - Melanie Waldenberger
- Research Unit of Molecular Epidemiology, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
| | - Rudolf A de Boer
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Lude Franke
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Pieter A van der Vleuten
- 1] Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. [2] Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Britt Maria Beckmann
- Department of Medicine I, University Hospital Munich, Ludwig Maximilians Universität, Munich, Germany
| | - Eimo Martens
- 1] Department of Medicine I, University Hospital Munich, Ludwig Maximilians Universität, Munich, Germany. [2] Department of Medicine, Hospital of Friedberg, Friedberg, Germany
| | - Abdennasser Bardai
- Heart Failure Research Center, Department of Clinical and Experimental Cardiology, Academic Medical Center, Amsterdam, The Netherlands
| | - Nynke Hofman
- Department of Clinical Genetics, Academic Medical Center, Amsterdam, The Netherlands
| | - Arthur A M Wilde
- 1] Heart Failure Research Center, Department of Clinical and Experimental Cardiology, Academic Medical Center, Amsterdam, The Netherlands. [2] Princess Al-Jawhara Al-Brahim Centre of Excellence in Research of Hereditary Disorders, Jeddah, Saudi Arabia
| | - Elijah R Behr
- Cardiovascular and Cell Sciences Institute, St George's University of London, London, UK
| | | | - John R Giudicessi
- Windland Smith Rice Sudden Death Genomics Laboratory, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA
| | - Argelia Medeiros-Domingo
- Windland Smith Rice Sudden Death Genomics Laboratory, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA
| | - Julien Barc
- Institut du Thorax, INSERM UMR1087, CNRS UMR 6291, Université de Nantes, Nantes, France
| | - Florence Kyndt
- 1] Institut du Thorax, Centre Hospitalier Universitaire de Nantes, Université de Nantes, Nantes, France. [2] Institut du Thorax, INSERM UMR1087, CNRS UMR 6291, Université de Nantes, Nantes, France
| | - Vincent Probst
- 1] Institut du Thorax, Centre Hospitalier Universitaire de Nantes, Université de Nantes, Nantes, France. [2] Institut du Thorax, INSERM UMR1087, CNRS UMR 6291, Université de Nantes, Nantes, France
| | - Alice Ghidoni
- 1] Department of Molecular Medicine, Section of Cardiology, University of Pavia, Pavia, Italy. [2] Center for Cardiac Arrhythmias of Genetic Origin, Istituto di Ricerca e Cura a Carattere Scientifico Istituto Auxologico Italiano, Milan, Italy
| | - Roberto Insolia
- 1] Department of Molecular Medicine, Section of Cardiology, University of Pavia, Pavia, Italy. [2] Center for Cardiac Arrhythmias of Genetic Origin, Istituto di Ricerca e Cura a Carattere Scientifico Istituto Auxologico Italiano, Milan, Italy
| | - Robert M Hamilton
- 1] The Labatt Family Heart Centre, The Hospital for Sick Children, Toronto, Ontario, Canada. [2] Department of Pediatrics, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Stephen W Scherer
- The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Jeffrey Brandimarto
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Kenneth Margulies
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Christine E Moravec
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Fabiola del Greco M
- Center for Biomedicine, European Academy Bozen/Bolzano (EURAC), Bolzano, Italy (affiliated institute of the University of Lübeck, Lübeck, Germany)
| | - Christian Fuchsberger
- Center for Statistical Genetics, Department of Biostatistics, University of Michigan, Ann Arbor, Michigan, USA
| | - Jeffrey R O'Connell
- 1] Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA. [2] Program for Personalized and Genomic Medicine, University of Maryland, Baltimore, Maryland, USA
| | - Wai K Lee
- BHF Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Graham C M Watt
- General Practice and Primary Care, University of Glasgow, Glasgow, UK
| | - Harry Campbell
- Centre for Population Health Sciences, University of Edinburgh, Edinburgh, UK
| | - Sarah H Wild
- Centre for Population Health Sciences, University of Edinburgh, Edinburgh, UK
| | - Nour E El Mokhtari
- Biobank PopGen, Institute of Experimental Medicine, Christian Albrechts University of Kiel, Kiel, Germany
| | - Norbert Frey
- Department of Internal Medicine III, University Medical Center Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Folkert W Asselbergs
- 1] Durrer Center for Cardiogenetic Research, Interuniversity Cardiology Institute of The Netherlands-Netherlands Heart Institute, Utrecht, The Netherlands. [2] Department of Cardiology, Division of Heart and Lungs, University Medical Centre Utrecht, Utrecht, The Netherlands. [3] Institute of Cardiovascular Science, Faculty of Population Health Sciences, University College London, London, UK
| | - Irene Mateo Leach
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Gerjan Navis
- Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Maarten P van den Berg
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Dirk J van Veldhuisen
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Manolis Kellis
- 1] Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA. [2] Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Bouwe P Krijthe
- 1] Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands. [2] Netherlands Consortium for Healthy Aging (NCHA), Leiden, The Netherlands
| | - Oscar H Franco
- 1] Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands. [2] Netherlands Consortium for Healthy Aging (NCHA), Leiden, The Netherlands
| | - Albert Hofman
- 1] Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands. [2] Netherlands Consortium for Healthy Aging (NCHA), Leiden, The Netherlands
| | - Jan A Kors
- Department of Medical Informatics, Erasmus Medical Center, Rotterdam, The Netherlands
| | - André G Uitterlinden
- 1] Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands. [2] Netherlands Consortium for Healthy Aging (NCHA), Leiden, The Netherlands. [3] Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Jacqueline C M Witteman
- 1] Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands. [2] Netherlands Consortium for Healthy Aging (NCHA), Leiden, The Netherlands
| | - Lyudmyla Kedenko
- First Department of Internal Medicine, Paracelsus Medical University/Salzburger Landeskliniken, Salzburg, Austria
| | - Claudia Lamina
- Division of Genetic Epidemiology, Innsbruck Medical University, Innsbruck, Austria
| | - Ben A Oostra
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Gonçalo R Abecasis
- Center for Statistical Genetics, Department of Biostatistics, University of Michigan, Ann Arbor, Michigan, USA
| | - Edward G Lakatta
- Laboratory of Cardiovascular Sciences, Human Cardiovascular Studies Unit, National Institute on Aging, US National Institutes of Health, Baltimore, Maryland, USA
| | - Antonella Mulas
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche, Monserrato, Cagliari, Italy
| | - Marco Orrú
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche, Monserrato, Cagliari, Italy
| | - David Schlessinger
- Laboratory of Genetics, Intramural Research Program, National Institute on Aging, US National Institutes of Health, Baltimore, Maryland, USA
| | - Manuela Uda
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche, Monserrato, Cagliari, Italy
| | - Marcello R P Markus
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Uwe Völker
- 1] DZHK (German Center for Cardiovascular Research), partner site Greifswald, Greifswald, Germany. [2] Interfaculty Institute for Genetics and Functional Genomics, Ernst Moritz Arndt University Greifswald, Greifswald, Germany
| | - Harold Snieder
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Timothy D Spector
- Department of Twin Research and Genetic Epidemiology, King's College London, London, UK
| | - Johan Ärnlöv
- 1] Department of Medical Sciences, Molecular Epidemiology and Science for Life Laboratory, Uppsala University, Uppsala, Sweden. [2] School of Health and Social Sciences, Dalarna University, Falun, Sweden
| | - Lars Lind
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Johan Sundström
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Ann-Christine Syvänen
- Department of Medical Sciences, Molecular Epidemiology and Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Mika Kivimaki
- Institute of Cardiovascular Science, University College London, London, UK
| | - Mika Kähönen
- Department of Clinical Physiology, Tampere University Hospital and University of Tampere School of Medicine, Tampere, Finland
| | - Nina Mononen
- Department of Clinical Chemistry, Fimlab Laboratories and University of Tampere School of Medicine, Tampere, Finland
| | - Olli T Raitakari
- 1] Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, Turku, Finland. [2] Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland
| | - Jorma S Viikari
- Department of Medicine, Turku University Hospital and University of Turku, Turku, Finland
| | - Vera Adamkova
- Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Stefan Kiechl
- Department of Neurology, Innsbruck Medical University, Innsbruck, Austria
| | - Maria Brion
- 1] Grupo de Medicina Xenómica, Centro Nacional de Genotipado, Centro de Investigación Biomédica en Red de Enfermedades Raras, Universidade de Santiago de Compostela, Santiago de Compostela, Spain. [2] Xenética de Enfermidades Cardiovasculares e Oftalmolóxicas, Complexo Hospitalario Universitario de Santiago de Compostela, Servicio Galego de Saude, Santiago de Compostela, Spain
| | - Andrew N Nicolaides
- 1] Cyprus Cardiovascular and Educational Research Trust, Nicosia, Cyprus. [2] Vascular Screening and Diagnostic Centre, London, UK
| | - Bernhard Paulweber
- First Department of Internal Medicine, Paracelsus Medical University/Salzburger Landeskliniken, Salzburg, Austria
| | - Johannes Haerting
- Institute of Medical Epidemiology, Biostatistics and Informatics, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Anna F Dominiczak
- BHF Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Fredrik Nyberg
- 1] Department of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden. [2] Global Epidemiology, AstraZeneca Research and Development, Mölndal, Sweden
| | - Peter H Whincup
- Division of Population Health Sciences and Education, St George's University of London, London, UK
| | - Aroon D Hingorani
- Institute of Cardiovascular Science, University College London, London, UK
| | - Jean-Jacques Schott
- 1] Institut du Thorax, Centre Hospitalier Universitaire de Nantes, Université de Nantes, Nantes, France. [2] Institut du Thorax, INSERM UMR1087, CNRS UMR 6291, Université de Nantes, Nantes, France
| | - Connie R Bezzina
- Heart Failure Research Center, Department of Clinical and Experimental Cardiology, Academic Medical Center, Amsterdam, The Netherlands
| | - Erik Ingelsson
- 1] Department of Medical Sciences, Molecular Epidemiology and Science for Life Laboratory, Uppsala University, Uppsala, Sweden. [2] Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Luigi Ferrucci
- Translational Gerontology Branch, National Institute on Aging, Baltimore, Maryland, USA
| | - Paolo Gasparini
- 1] Institute for Maternal and Child Health, "Burlo Garofolo" Trieste, Trieste, Italy. [2] Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - James F Wilson
- Centre for Population Health Sciences, University of Edinburgh, Edinburgh, UK
| | - Igor Rudan
- Centre for Population Health Sciences, University of Edinburgh, Edinburgh, UK
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian Albrechts University of Kiel, Kiel, Germany
| | - Thomas W Mühleisen
- 1] Department of Genomics, Life and Brain Center, University of Bonn, Bonn, Germany. [2] Institute of Human Genetics, University of Bonn, Bonn, Germany. [3] Institute of Neuroscience and Medicine (INM-1), Structural and Functional Organization of the Brain, Genomic Imaging, Research Centre Juelich, Juelich, Germany
| | - Peter P Pramstaller
- 1] Center for Biomedicine, European Academy Bozen/Bolzano (EURAC), Bolzano, Italy (affiliated institute of the University of Lübeck, Lübeck, Germany). [2] Department of Neurology, University of Lübeck, Lübeck, Germany. [3] Department of Neurology, General Central Hospital, Bolzano, Italy
| | - Terho J Lehtimäki
- Department of Clinical Chemistry, Fimlab Laboratories and University of Tampere School of Medicine, Tampere, Finland
| | - Andrew D Paterson
- Genetics and Genome Biology Program, The Hospital for Sick Children Research Institute, Toronto, Ontario, Canada
| | - Afshin Parsa
- 1] Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA. [2] Program for Personalized and Genomic Medicine, University of Maryland, Baltimore, Maryland, USA
| | - Yongmei Liu
- Department of Epidemiology and Prevention, Division of Public Health Sciences, Wake Forest University, Winston-Salem, North Carolina, USA
| | | | - David S Siscovick
- 1] Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, Washington, USA. [2] Department of Epidemiology, University of Washington, Seattle, Washington, USA. [3] Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Vilmundur Gudnason
- 1] Icelandic Heart Association, Kopavogur, Iceland. [2] Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Yalda Jamshidi
- Human Genetics Research Centre, St George's University of London, London, UK
| | - Veikko Salomaa
- Chronic Disease Epidemiology and Prevention Unit, National Institute for Health and Welfare, Helsinki, Finland
| | - Stephan B Felix
- 1] Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany. [2] DZHK (German Center for Cardiovascular Research), partner site Greifswald, Greifswald, Germany
| | - Serena Sanna
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche, Monserrato, Cagliari, Italy
| | - Marylyn D Ritchie
- Center for Systems Genomics, Pennsylvania State University, University Park, Pennsylvania, USA
| | - Bruno H Stricker
- 1] Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands. [2] Netherlands Consortium for Healthy Aging (NCHA), Leiden, The Netherlands. [3] Department of Medical Informatics, Erasmus Medical Center, Rotterdam, The Netherlands. [4] Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands. [5] Inspectorate of Health Care, The Hague, The Netherlands
| | - Kari Stefansson
- 1] deCODE genetics, Reykjavik, Iceland. [2] Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Laurie A Boyer
- Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Thomas P Cappola
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jesper V Olsen
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Kasper Lage
- 1] Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, Massachusetts, USA. [2] Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, Massachusetts, USA. [3] Novo Nordisk Foundation Center for Protein Research, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark. [4] Center for Biological Sequence Analysis, Department of Systems Biology, Technical University of Denmark, Lyngby, Denmark. [5] Pediatric Surgical Research Laboratories, MassGeneral Hospital for Children, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Peter J Schwartz
- Center for Cardiac Arrhythmias of Genetic Origin, Istituto di Ricerca e Cura a Carattere Scientifico Istituto Auxologico Italiano, Milan, Italy
| | - Stefan Kääb
- 1] Department of Medicine I, University Hospital Munich, Ludwig Maximilians Universität, Munich, Germany. [2] DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - Aravinda Chakravarti
- Center for Complex Disease Genomics, McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Michael J Ackerman
- 1] Department of Pediatrics, Division of Pediatric Cardiology, Mayo Clinic, Rochester, Minnesota, USA. [2] Windland Smith Rice Sudden Death Genomics Laboratory, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA. [3] Department of Medicine, Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota, USA. [4]
| | - Arne Pfeufer
- 1] Center for Biomedicine, European Academy Bozen/Bolzano (EURAC), Bolzano, Italy (affiliated institute of the University of Lübeck, Lübeck, Germany). [2] Institute of Human Genetics, Technische Universität München, Munich, Germany. [3] Institute for Bioinformatics and Systems Biology, Helmholtz Zentrum, Munich, Germany. [4]
| | - Paul I W de Bakker
- 1] Department of Medical Genetics, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands. [2] Department of Epidemiology, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands. [3]
| | - Christopher Newton-Cheh
- 1] Center for Human Genetic Research, Massachusetts General Hospital, Boston, Massachusetts, USA. [2] Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, Massachusetts, USA. [3] Harvard Medical School, Boston, Massachusetts, USA. [4] Cardiovascular Research Center, Massachusetts General Hospital, Boston, Massachusetts, USA. [5]
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Sun J, Mohlin S, Lundby A, Kazi JU, Hellman U, Påhlman S, Olsen JV, Rönnstrand L. The PI3-kinase isoform p110δ is essential for cell transformation induced by the D816V mutant of c-Kit in a lipid-kinase-independent manner. Oncogene 2013; 33:5360-9. [PMID: 24213578 DOI: 10.1038/onc.2013.479] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 08/13/2013] [Accepted: 09/16/2013] [Indexed: 12/12/2022]
Abstract
PI3-kinase has a crucial role in transformation mediated by the oncogenic c-Kit mutant D816V. In this study, we demonstrate that the c-Kit/D816V-mediated cell survival is dependent on an intact direct binding of PI3-kinase to c-Kit. However, mutation of this binding site had little effect on the PI3-kinase activity in the cells, suggesting that c-Kit/D816V-mediated cell survival is dependent on PI3-kinase but not its kinase activity. Furthermore, inhibition of the lipid kinase activity of PI3-kinase led only to a slight inhibition of cell survival. Knockdown of the predominant PI3-kinase isoform p110δ in c-Kit/D816V-expressing Ba/F3 cells led to reduced cell transformation both in vitro and in vivo without affecting the overall PI3-kinase activity. This suggests that p110δ has a lipid-kinase-independent role in c-Kit/D816V-mediated cell transformation. We furthermore demonstrate that p110δ is phosphorylated at residues Y524 and S1039 and that phosphorylation requires an intact binding site for PI3-kinase in c-Kit/D816V. Overexpression of p110δ carrying the Y523F and S1038A mutations significantly reduced c-Kit/D816V-mediated cell survival and proliferation. Taken together, our results demonstrate an important lipid-kinase-independent role of p110δ in c-Kit/D816V-mediated cell transformation. This furthermore suggests that p110δ could be a potential diagnostic factor and selective therapeutic target for c-Kit/D816V-expressing malignancies.
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Affiliation(s)
- J Sun
- Experimental Clinical Chemistry, Department of Laboratory Medicine, Lund University, Skåne University Hospital, Malmö, Sweden
| | - S Mohlin
- Center for Molecular Pathology, Department of Laboratory Medicine, CREATE Health, Lund University, Skåne University Hospital, Malmö, Sweden
| | - A Lundby
- Novo Nordisk Foundation Center for Protein Research, Department of Proteomics, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - J U Kazi
- Experimental Clinical Chemistry, Department of Laboratory Medicine, Lund University, Skåne University Hospital, Malmö, Sweden
| | - U Hellman
- Ludwig Institute for Cancer Research, Uppsala, Sweden
| | - S Påhlman
- Center for Molecular Pathology, Department of Laboratory Medicine, CREATE Health, Lund University, Skåne University Hospital, Malmö, Sweden
| | - J V Olsen
- Novo Nordisk Foundation Center for Protein Research, Department of Proteomics, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - L Rönnstrand
- Experimental Clinical Chemistry, Department of Laboratory Medicine, Lund University, Skåne University Hospital, Malmö, Sweden
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Affiliation(s)
- Alicia Lundby
- Novo Nordisk Foundation Center for Protein Research; Department for Proteomics; Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen, Denmark; The Danish National Research Foundation Centre for Cardiac Arrhythmia; Copenhagen, Denmark
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Lundby A, Andersen MN, Steffensen AB, Horn H, Kelstrup CD, Francavilla C, Jensen LJ, Schmitt N, Thomsen MB, Olsen JV. In vivo phosphoproteomics analysis reveals the cardiac targets of β-adrenergic receptor signaling. Sci Signal 2013; 6:rs11. [PMID: 23737553 DOI: 10.1126/scisignal.2003506] [Citation(s) in RCA: 141] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
β-Blockers are widely used to prevent cardiac arrhythmias and to treat hypertension by inhibiting β-adrenergic receptors (βARs) and thus decreasing contractility and heart rate. βARs initiate phosphorylation-dependent signaling cascades, but only a small number of the target proteins are known. We used quantitative in vivo phosphoproteomics to identify 670 site-specific phosphorylation changes in murine hearts in response to acute treatment with specific βAR agonists. The residues adjacent to the regulated phosphorylation sites exhibited a sequence-specific preference (R-X-X-pS/T), and integrative analysis of sequence motifs and interaction networks suggested that the kinases AMPK (adenosine 5'-monophosphate-activated protein kinase), Akt, and mTOR (mammalian target of rapamycin) mediate βAR signaling, in addition to the well-established pathways mediated by PKA (cyclic adenosine monophosphate-dependent protein kinase) and CaMKII (calcium/calmodulin-dependent protein kinase type II). We found specific regulation of phosphorylation sites on six ion channels and transporters that mediate increased ion fluxes at higher heart rates, and we showed that phosphorylation of one of these, Ser(92) of the potassium channel KV7.1, increased current amplitude. Our data set represents a quantitative analysis of phosphorylated proteins regulated in vivo upon stimulation of seven-transmembrane receptors, and our findings reveal previously unknown phosphorylation sites that regulate myocardial contractility, suggesting new potential targets for the treatment of heart disease and hypertension.
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Affiliation(s)
- Alicia Lundby
- Novo Nordisk Foundation Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3b, DK-2200 Copenhagen, Denmark.
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Sun J, Mohlin S, Lundby A, Hellman U, Påhlman S, Olsen JV, Rönnstrand L. Abstract 4301: Transformation by the D816V mutant of c-Kit is dependent on the PI3-kinase isoform p110δ but independent of its lipid kinase activi. Cancer Res 2013. [DOI: 10.1158/1538-7445.am2013-4301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Gain-of-function mutations of the receptor tyrosine kinase c-Kit are frequently seen in several malignanices with the D816V mutation being the most common. In this study we demonstrate that a mutant of c-Kit/D816V that is deficient in binding of the p85 subunit of PI3-kinase (M724A) has lost its ability to induce ligand-independent cell survival and proliferation while c-Kit/D816V induced PI3-kinases activity was only marginally reduced. Furthermore, inhibitors of PI3-kinase were unable to block c-Kit/D816V-induced cell survival. These data suggest that PI3-kinase plays a role in c-Kit/D816V induced cell transformation which is independent of its lipid kinase activity. By mass spectrometry, we identified a heavily tyrosine-phosphorylated 110 kDa protein associated with p85 to be the p110δ subunit of PI3-kinase and the site of phosphorylation as Tyr 523, and the phosphorylation is not dependent on the lipid kinase activity of PI3-kinase. Knockdown of p110δ in c-Kit/D816V expressing Ba/F3 cells led to reduced cell survival and proliferation while the PI3-kinase activity remained almost intact. The c-Kit/D816V expressing Ba/F3 cells lost their ability to form colonies in semi-solid culture if p110δ was knocked down. Additionally, knockdown of p110δ λεδ τo ρεδυχεδ τυμoρ σιζε, τυμoρ ωειγητ ανδ blood vessel formation ωηεν c-Kit/D816V expressing Ba/F3 cells were subcutaneously injected into nude mice. Taken together, these results suggest a kinase independent role of p110δ in the D816Vmutant of c-Kit mediated cell transformation and suggest that p110δ could potentially be a selective therapeutic target for c-Kit/D816V expressing tumors.
Citation Format: Jianmin Sun, Sofie Mohlin, Alicia Lundby, Ulf Hellman, Sven Påhlman, Jesper V. Olsen, Lars Rönnstrand. Transformation by the D816V mutant of c-Kit is dependent on the PI3-kinase isoform p110δ but independent of its lipid kinase activi. [abstract]. In: Proceedings of the 104th Annual Meeting of the American Association for Cancer Research; 2013 Apr 6-10; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2013;73(8 Suppl):Abstract nr 4301. doi:10.1158/1538-7445.AM2013-4301
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Affiliation(s)
| | | | | | - Ulf Hellman
- 3Ludwig Institute for Cancer Research, Uppsala, Sweden
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den Hoed M, Eijgelsheim M, Esko T, Brundel BJJM, Peal DS, Evans DM, Nolte IM, Segrè AV, Holm H, Handsaker RE, Westra HJ, Johnson T, Isaacs A, Yang J, Lundby A, Zhao JH, Kim YJ, Go MJ, Almgren P, Bochud M, Boucher G, Cornelis MC, Gudbjartsson D, Hadley D, van der Harst P, Hayward C, den Heijer M, Igl W, Jackson AU, Kutalik Z, Luan J, Kemp JP, Kristiansson K, Ladenvall C, Lorentzon M, Montasser ME, Njajou OT, O'Reilly PF, Padmanabhan S, St Pourcain B, Rankinen T, Salo P, Tanaka T, Timpson NJ, Vitart V, Waite L, Wheeler W, Zhang W, Draisma HHM, Feitosa MF, Kerr KF, Lind PA, Mihailov E, Onland-Moret NC, Song C, Weedon MN, Xie W, Yengo L, Absher D, Albert CM, Alonso A, Arking DE, de Bakker PIW, Balkau B, Barlassina C, Benaglio P, Bis JC, Bouatia-Naji N, Brage S, Chanock SJ, Chines PS, Chung M, Darbar D, Dina C, Dörr M, Elliott P, Felix SB, Fischer K, Fuchsberger C, de Geus EJC, Goyette P, Gudnason V, Harris TB, Hartikainen AL, Havulinna AS, Heckbert SR, Hicks AA, Hofman A, Holewijn S, Hoogstra-Berends F, Hottenga JJ, Jensen MK, Johansson A, Junttila J, Kääb S, Kanon B, Ketkar S, Khaw KT, Knowles JW, Kooner AS, Kors JA, Kumari M, Milani L, Laiho P, Lakatta EG, Langenberg C, Leusink M, Liu Y, Luben RN, Lunetta KL, Lynch SN, Markus MRP, Marques-Vidal P, Mateo Leach I, McArdle WL, McCarroll SA, Medland SE, Miller KA, Montgomery GW, Morrison AC, Müller-Nurasyid M, Navarro P, Nelis M, O'Connell JR, O'Donnell CJ, Ong KK, Newman AB, Peters A, Polasek O, Pouta A, Pramstaller PP, Psaty BM, Rao DC, Ring SM, Rossin EJ, Rudan D, Sanna S, Scott RA, Sehmi JS, Sharp S, Shin JT, Singleton AB, Smith AV, Soranzo N, Spector TD, Stewart C, Stringham HM, Tarasov KV, Uitterlinden AG, Vandenput L, Hwang SJ, Whitfield JB, Wijmenga C, Wild SH, Willemsen G, Wilson JF, Witteman JCM, Wong A, Wong Q, Jamshidi Y, Zitting P, Boer JMA, Boomsma DI, Borecki IB, van Duijn CM, Ekelund U, Forouhi NG, Froguel P, Hingorani A, Ingelsson E, Kivimaki M, Kronmal RA, Kuh D, Lind L, Martin NG, Oostra BA, Pedersen NL, Quertermous T, Rotter JI, van der Schouw YT, Verschuren WMM, Walker M, Albanes D, Arnar DO, Assimes TL, Bandinelli S, Boehnke M, de Boer RA, Bouchard C, Caulfield WLM, Chambers JC, Curhan G, Cusi D, Eriksson J, Ferrucci L, van Gilst WH, Glorioso N, de Graaf J, Groop L, Gyllensten U, Hsueh WC, Hu FB, Huikuri HV, Hunter DJ, Iribarren C, Isomaa B, Jarvelin MR, Jula A, Kähönen M, Kiemeney LA, van der Klauw MM, Kooner JS, Kraft P, Iacoviello L, Lehtimäki T, Lokki MLL, Mitchell BD, Navis G, Nieminen MS, Ohlsson C, Poulter NR, Qi L, Raitakari OT, Rimm EB, Rioux JD, Rizzi F, Rudan I, Salomaa V, Sever PS, Shields DC, Shuldiner AR, Sinisalo J, Stanton AV, Stolk RP, Strachan DP, Tardif JC, Thorsteinsdottir U, Tuomilehto J, van Veldhuisen DJ, Virtamo J, Viikari J, Vollenweider P, Waeber G, Widen E, Cho YS, Olsen JV, Visscher PM, Willer C, Franke L, Erdmann J, Thompson JR, Pfeufer A, Sotoodehnia N, Newton-Cheh C, Ellinor PT, Stricker BHC, Metspalu A, Perola M, Beckmann JS, Smith GD, Stefansson K, Wareham NJ, Munroe PB, Sibon OCM, Milan DJ, Snieder H, Samani NJ, Loos RJF. Identification of heart rate-associated loci and their effects on cardiac conduction and rhythm disorders. Nat Genet 2013; 45:621-31. [PMID: 23583979 DOI: 10.1038/ng.2610] [Citation(s) in RCA: 228] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Accepted: 03/21/2013] [Indexed: 12/16/2022]
Abstract
Elevated resting heart rate is associated with greater risk of cardiovascular disease and mortality. In a 2-stage meta-analysis of genome-wide association studies in up to 181,171 individuals, we identified 14 new loci associated with heart rate and confirmed associations with all 7 previously established loci. Experimental downregulation of gene expression in Drosophila melanogaster and Danio rerio identified 20 genes at 11 loci that are relevant for heart rate regulation and highlight a role for genes involved in signal transmission, embryonic cardiac development and the pathophysiology of dilated cardiomyopathy, congenital heart failure and/or sudden cardiac death. In addition, genetic susceptibility to increased heart rate is associated with altered cardiac conduction and reduced risk of sick sinus syndrome, and both heart rate-increasing and heart rate-decreasing variants associate with risk of atrial fibrillation. Our findings provide fresh insights into the mechanisms regulating heart rate and identify new therapeutic targets.
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Affiliation(s)
- Marcel den Hoed
- Medical Research Council MRC Epidemiology Unit, Institute of Metabolic Science, Addenbrooke's Hospital, Cambridge, UK
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Lundby A, Lage K, Weinert BT, Bekker-Jensen DB, Secher A, Skovgaard T, Kelstrup CD, Dmytriyev A, Choudhary C, Lundby C, Olsen JV. Proteomic analysis of lysine acetylation sites in rat tissues reveals organ specificity and subcellular patterns. Cell Rep 2012; 2:419-31. [PMID: 22902405 PMCID: PMC4103158 DOI: 10.1016/j.celrep.2012.07.006] [Citation(s) in RCA: 440] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Revised: 05/22/2012] [Accepted: 07/18/2012] [Indexed: 12/23/2022] Open
Abstract
Lysine acetylation is a major posttranslational modification involved in
a broad array of physiological functions. Here, we provide an organ-wide map of
lysine acetylation sites from 16 rat tissues analyzed by high-resolution tandem
mass spectrometry. We quantify 15,474 modification sites on 4,541 proteins and
provide the data set as a web-based database. We demonstrate that lysine
acetylation displays site-specific sequence motifs that diverge between cellular
compartments, with a significant fraction of nuclear sites conforming to the
consensus motifs G-AcK and AcK-P. Our data set reveals that the subcellular
acetylation distribution is tissue-type dependent and that acetylation targets
tissue-specific pathways involved in fundamental physiological processes. We
compare lysine acetylation patterns for rat as well as human skeletal muscle
biopsies and demonstrate its general involvement in muscle contraction.
Furthermore, we illustrate that acetylation of fructose-bisphosphate aldolase
and glycerol-3-phosphate dehydrogenase serves as a cellular mechanism to switch
off enzymatic activity.
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Affiliation(s)
- Alicia Lundby
- Novo Nordisk Foundation Center for Protein Research, Department for Proteomics, Faculty of Health Sciences, University of Copenhagen, Denmark
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Lundby A, Rossin EJ, Steffensen AB, Lage K, Olsen JV. Protein Interactomes of Mendelian Long QT Syndrome Genes are Associated to QT Interval Variation in the General Population and Augment Genome‐Wide Association Data. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.lb605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alicia Lundby
- NNF Center for Protein ResearchUniversity of CopenhagenCopenhagen NDenmark
| | | | - Annette B. Steffensen
- The Danish National Research Foundation Centre for Cardiac ArrhythmiaCopenhagenDenmark
| | - Kasper Lage
- The Broad Institute of MIT and HarvardCambridgeMA
| | - Jesper V. Olsen
- NNF Center for Protein ResearchUniversity of CopenhagenCopenhagen NDenmark
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38
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Abstract
In recent years the array of mass spectrometry (MS) applications to address questions in molecular and cellular biology has greatly expanded and continues to grow. Modern mass spectrometers allow for identification, characterization, as well as quantification of protein compositions and their modifications in complex biological samples. Prior to MS analysis any biological sample needs to be properly prepared for the experiment. Here we present a protocol that combines pre-separation of proteins by 1D gel electrophoresis followed by analysis of in situ digested protein products by tandem mass spectrometry (MS/MS). All steps of the sample preparation are explained in detail, and the procedure is compatible with downstream analysis on any mass spectrometer available. With minor adjustments the protocol can be used with 2D gels as well. The protocol provided can be applied to analyze specific proteins of particular interest as well as entire proteomes. If SILAC-labeled protein samples are mixed prior to gel separation, the protein content of the sample can furthermore be accurately quantified.
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Affiliation(s)
- Alicia Lundby
- Faculty of Health Sciences, Novo Nordisk Foundation Center for Protein Research, University of Copenhagen, Copenhagen, DK-2200, Denmark
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Lundby A, Jespersen T, Schmitt N, Grunnet M, Olesen SP, Cordeiro JM, Calloe K. Effect of the I(to) activator NS5806 on cloned K(V)4 channels depends on the accessory protein KChIP2. Br J Pharmacol 2010; 160:2028-44. [PMID: 20649599 DOI: 10.1111/j.1476-5381.2010.00859.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND AND PURPOSE The compound NS5806 increases the transient outward current (I(to)) in canine ventricular cardiomyocytes and slows current decay. In human and canine ventricle, I(to) is thought to be mediated by K(V)4.3 and various ancillary proteins, yet, the exact subunit composition of I(to) channels is still debated. Here we characterize the effect of NS5806 on heterologously expressed putative I(to) channel subunits and other potassium channels. EXPERIMENTAL APPROACH Cloned K(V)4 channels were co-expressed with KChIP2, DPP6, DPP10, KCNE2, KCNE3 and K(V)1.4 in Xenopus laevis oocytes or CHO-K1 cells. KEY RESULTS NS5806 increased K(V)4.3/KChIP2 peak current amplitudes with an EC(50) of 5.3 +/- 1.5microM and significantly slowed current decay. KCNE2, KCNE3, DPP6 and DPP10 modulated K(V)4.3 currents and the response to NS5806, but current decay was slowed only in complexes containing KChIP2. The effect of NS5806 on K(V)4.2 was similar to that on K(V)4.3, and current decay was only slowed in presence of KChIP2. However, for K(V)4.1, the slowing of current decay by NS5806 was independent of KChIP2. K(V)1.4 was strongly inhibited by 10 microM NS5806 and K(V)1.5 was inhibited to a smaller extent. Effects of NS5806 on kinetics of currents generated by K(V)4.3/KChIP2/DPP6 with K(V)1.4 in oocytes could reproduce those on cardiac I(to) in canine ventricular myocytes. K(V)7.1, K(V)11.1 and K(ir)2 currents were unaffected by NS5806. CONCLUSION AND IMPLICATIONS NS5806 modulated K(V)4 channel gating depending on the presence of KChIP2, suggesting that NS5806 can potentially be used to address the molecular composition as well as the physiological role of cardiac I(to).
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Affiliation(s)
- A Lundby
- The Danish National Research Foundation Centre for Cardiac Arrhythmia, Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
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40
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Abstract
The cardiac I(Ks) current is involved in action potential repolarization, where its primary function is to limit action potential prolongation during sympathetic stimulation. The I(Ks) channel is mainly composed of K(V)7.1 ion channels associated with KCNE1 auxiliary subunits. The availability of KCNE1 solution structure by nuclear magnetic resonance spectroscopy in conjunction with biochemical assays addressing K(V)7.1-KCNE1 residue interactions has provided new insights into the structural basis for K(V)7.1 modulation by KCNE1. Recent evidence further suggests that KCNE2 may associate with the K(V)7.1-KCNE1 channel complex and modulate its current amplitude. Here we review recent studies in this area and discuss potential roles for multiple KCNE(x) subunits in I(Ks) generation and modulation as well as the clinical relevance of the new information.
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Affiliation(s)
- Alicia Lundby
- Danish National Research Foundation Centre for Cardiac Arrhythmia, Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark.
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Akemann W, Lundby A, Mutoh H, Knöpfel T. Effect of voltage sensitive fluorescent proteins on neuronal excitability. Biophys J 2009; 96:3959-76. [PMID: 19450468 PMCID: PMC2712148 DOI: 10.1016/j.bpj.2009.02.046] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2008] [Revised: 01/24/2009] [Accepted: 02/11/2009] [Indexed: 10/20/2022] Open
Abstract
Fluorescent protein voltage sensors are recombinant proteins that are designed as genetically encoded cellular probes of membrane potential using mechanisms of voltage-dependent modulation of fluorescence. Several such proteins, including VSFP2.3 and VSFP3.1, were recently reported with reliable function in mammalian cells. They were designed as molecular fusions of the voltage sensor of Ciona intestinalis voltage sensor containing phosphatase with a fluorescence reporter domain. Expression of these proteins in cell membranes is accompanied by additional dynamic membrane capacitance, or "sensing capacitance", with feedback effect on the native electro-responsiveness of targeted cells. We used recordings of sensing currents and fluorescence responses of VSFP2.3 and of VSFP3.1 to derive kinetic models of the voltage-dependent signaling of these proteins. Using computational neuron simulations, we quantitatively investigated the perturbing effects of sensing capacitance on the input/output relationship in two central neuron models, a cerebellar Purkinje and a layer 5 pyramidal neuron. Probe-induced sensing capacitance manifested as time shifts of action potentials and increased synaptic input thresholds for somatic action potential initiation with linear dependence on the membrane density of the probe. Whereas the fluorescence signal/noise grows with the square root of the surface density of the probe, the growth of sensing capacitance is linear. We analyzed the trade-off between minimization of sensing capacitance and signal/noise of the optical read-out depending on kinetic properties and cellular distribution of the probe. The simulation results suggest ways to reduce capacitive effects at a given level of signal/noise. Yet, the simulations indicate that significant improvement of existing probes will still be required to report action potentials in individual neurons in mammalian brain tissue in single trials.
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Affiliation(s)
- Walther Akemann
- Laboratory for Neuronal Circuit Dynamics, RIKEN Brain Science Institute, Wako-City, Saitama 351-0198, Japan
| | - Alicia Lundby
- Laboratory for Neuronal Circuit Dynamics, RIKEN Brain Science Institute, Wako-City, Saitama 351-0198, Japan
- The Danish National Research Foundation, Centre for Cardiac Arrhythmia, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Hiroki Mutoh
- Laboratory for Neuronal Circuit Dynamics, RIKEN Brain Science Institute, Wako-City, Saitama 351-0198, Japan
| | - Thomas Knöpfel
- Laboratory for Neuronal Circuit Dynamics, RIKEN Brain Science Institute, Wako-City, Saitama 351-0198, Japan
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Calloe K, Jespersen T, Lundby A, Antzelevitch C, Olesen SP, Cordeiro JM. Differential Effects of the Transient Outward K+ Current Activator NS5806 in the Canine Left Ventricle. Biophys J 2009. [DOI: 10.1016/j.bpj.2008.12.3479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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43
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Lundby A, Jespersen T, Schmitt N, Grunnet M, Olesen SP, Cordeiro JM, Calloe K. The Effect Of The Ito Activator NS5806 On Cloned Kv4.3 Channels Is Dependent On The Accessory Protein KChIP2. Biophys J 2009. [DOI: 10.1016/j.bpj.2008.12.3480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Lundby A, Mutoh H, Dimitrov D, Akemann W, Knöpfel T. Engineering of a genetically encodable fluorescent voltage sensor exploiting fast Ci-VSP voltage-sensing movements. PLoS One 2008; 3:e2514. [PMID: 18575613 PMCID: PMC2429971 DOI: 10.1371/journal.pone.0002514] [Citation(s) in RCA: 119] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2008] [Accepted: 05/12/2008] [Indexed: 12/02/2022] Open
Abstract
Ci-VSP contains a voltage-sensing domain (VSD) homologous to that of voltage-gated potassium channels. Using charge displacement ('gating' current) measurements we show that voltage-sensing movements of this VSD can occur within 1 ms in mammalian membranes. Our analysis lead to development of a genetically encodable fluorescent protein voltage sensor (VSFP) in which the fast, voltage-dependent conformational changes of the Ci-VSP voltage sensor are transduced to similarly fast fluorescence read-outs.
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Affiliation(s)
- Alicia Lundby
- Laboratory for Neuronal Circuit Dynamics, RIKEN Brain Science Institute, Wako-City, Saitama, Japan
- The Danish National Research Foundation Centre for Cardiac Arrhythmia, University of Copenhagen, Copenhagen, Denmark
| | - Hiroki Mutoh
- Laboratory for Neuronal Circuit Dynamics, RIKEN Brain Science Institute, Wako-City, Saitama, Japan
| | - Dimitar Dimitrov
- Laboratory for Neuronal Circuit Dynamics, RIKEN Brain Science Institute, Wako-City, Saitama, Japan
| | - Walther Akemann
- Laboratory for Neuronal Circuit Dynamics, RIKEN Brain Science Institute, Wako-City, Saitama, Japan
| | - Thomas Knöpfel
- Laboratory for Neuronal Circuit Dynamics, RIKEN Brain Science Institute, Wako-City, Saitama, Japan
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45
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Lundby A, Ravn LS, Svendsen JH, Haunsø S, Olesen SP, Schmitt N. KCNE3 Mutation V17M Identified in a Patient with Lone Atrial Fibrillation. Cell Physiol Biochem 2008; 21:47-54. [DOI: 10.1159/000113746] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/22/2007] [Indexed: 11/19/2022] Open
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46
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Lundby A, Ravn LS, Svendsen JH, Olesen SP, Schmitt N. KCNQ1 mutation Q147R is associated with atrial fibrillation and prolonged QT interval. Heart Rhythm 2007; 4:1532-41. [DOI: 10.1016/j.hrthm.2007.07.022] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2007] [Accepted: 07/21/2007] [Indexed: 10/23/2022]
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Santos JS, Lundby A, Zazueta C, Montal M. Molecular template for a voltage sensor in a novel K+ channel. I. Identification and functional characterization of KvLm, a voltage-gated K+ channel from Listeria monocytogenes. ACTA ACUST UNITED AC 2006; 128:283-92. [PMID: 16908725 PMCID: PMC2151562 DOI: 10.1085/jgp.200609572] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The fundamental principles underlying voltage sensing, a hallmark feature of electrically excitable cells, are still enigmatic and the subject of intense scrutiny and controversy. Here we show that a novel prokaryotic voltage-gated K+ (Kv) channel from Listeria monocytogenes (KvLm) embodies a rudimentary, yet robust, sensor sufficient to endow it with voltage-dependent features comparable to those of eukaryotic Kv channels. The most conspicuous feature of the KvLm sequence is the nature of the sensor components: the motif is recognizable; it appears, however, to contain only three out of eight charged residues known to be conserved in eukaryotic Kv channels and accepted to be deterministic for folding and sensing. Despite the atypical sensor sequence, flux assays of KvLm reconstituted in liposomes disclosed a channel pore that is highly selective for K+ and is blocked by conventional Kv channel blockers. Single-channel currents recorded in symmetric K+ solutions from patches of enlarged Escherichia coli (spheroplasts) expressing KvLm showed that channel open probability sharply increases with depolarization, a hallmark feature of Kv channels. The identification of a voltage sensor module in KvLm with a voltage dependence comparable to that of other eukaryotic Kv channels yet encoded by a sequence that departs significantly from the consensus sequence of a eukaryotic voltage sensor establishes a molecular blueprint of a minimal sequence for a voltage sensor.
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Affiliation(s)
- Jose S Santos
- Section of Neurobiology, Division of Biological Sciences, University of California San Diego, La Jolla, CA 92093, USA
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48
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Lundby A, Santos JS, Zazueta C, Montal M. Molecular template for a voltage sensor in a novel K+ channel. II. Conservation of a eukaryotic sensor fold in a prokaryotic K+ channel. ACTA ACUST UNITED AC 2006; 128:293-300. [PMID: 16908726 PMCID: PMC2151563 DOI: 10.1085/jgp.200609573] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
KvLm, a novel bacterial depolarization-activated K+ (Kv) channel isolated from the genome of Listeria monocytogenes, contains a voltage sensor module whose sequence deviates considerably from the consensus sequence of a Kv channel sensor in that only three out of eight conserved charged positions are present. Surprisingly, KvLm exhibits the steep dependence of the open channel probability on membrane potential that is characteristic of eukaryotic Kv channels whose sensor sequence approximates the consensus. Here we asked if the KvLm sensor shared a similar fold to that of Shaker, the archetypal eukaryotic Kv channel, by examining if interactions between conserved residues in Shaker known to mediate sensor biogenesis and function were conserved in KvLm. To this end, each of the five non-conserved residues in the KvLm sensor were mutated to their Shaker-like charged residues, and the impact of these mutations on the voltage dependence of activation was assayed by current recordings from excised membrane patches of Escherichia coli spheroplasts expressing the KvLm mutants. Conservation of pairwise interactions was investigated by comparison of the effect of single mutations to the impact of double mutations presumed to restore wild-type fold and voltage sensitivity. We observed significant functional coupling between sites known to interact in Shaker Kv channels, supporting the notion that the KvLm sensor largely retains the fold of its eukaryotic homologue.
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Affiliation(s)
- Alicia Lundby
- Section of Neurobiology, Division of Biological Sciences, University of California San Diego, La Jolla, CA 92093, USA
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49
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Abstract
The mammalian Kv4.3 potassium channel is a fast activating and inactivating K+ channel widely distributed in mammalian tissues. Kv4.3 is the major component of various physiologically important currents ranging from A-type currents in the CNS to the transient outward potassium conductance in the heart (I(to)). Here we show that the KCNE3 beta-subunit has a strong inhibitory effect on current conducted by heterologously expressed Kv4.3 channels. KCNE3 reduces the Kv4.3 current amplitude, and it slows down the channel activation and inactivation as well as the recovery from inactivation. KCNE3 also inhibits currents generated by Kv4.3 in complex with the accessory subunit KChIP2. We find the inhibitory effect of KCNE3 to be specific for Kv4.3 within the Kv4 channel family. Kv4.3 has previously been shown to interact with a number of beta-subunits, but none of the described subunit-interactions exert an inhibitory effect on the Kv4.3 current.
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Affiliation(s)
- Alicia Lundby
- The Danish National Research Foundation Centre for Cardiac Arrhythmia, Department of Medical Physiology, University of Copenhagen, The Panum Institute, 3 Blegdamsvej, DK-2200 Copenhagen N, Denmark
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50
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Bunyan DE, Lundby A, Walker D. Experiments with the Delayed Coincidence Method, including a Search for Short-lived Nuclear Isomers. ACTA ACUST UNITED AC 2002. [DOI: 10.1088/0370-1298/62/4/306] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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