1
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Salgado-Almario J, Molina Y, Vicente M, Martínez-Sielva A, Rodríguez-García R, Vincent P, Domingo B, Llopis J. ERG potassium channels and T-type calcium channels contribute to the pacemaker and atrioventricular conduction in zebrafish larvae. Acta Physiol (Oxf) 2024; 240:e14075. [PMID: 38071417 DOI: 10.1111/apha.14075] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 11/14/2023] [Accepted: 11/22/2023] [Indexed: 02/01/2024]
Abstract
AIM Bradyarrhythmias result from inhibition of automaticity, prolonged repolarization, or slow conduction in the heart. The ERG channels mediate the repolarizing current IKr in the cardiac action potential, whereas T-type calcium channels (TTCC) are involved in the sinoatrial pacemaker and atrioventricular conduction in mammals. Zebrafish have become a valuable research model for human cardiac electrophysiology and disease. Here, we investigate the contribution of ERG channels and TTCCs to the pacemaker and atrioventricular conduction in zebrafish larvae and determine the mechanisms causing atrioventricular block. METHODS Zebrafish larvae expressing ratiometric fluorescent Ca2+ biosensors in the heart were used to measure Ca2+ levels and rhythm in beating hearts in vivo, concurrently with contraction and hemodynamics. The atrioventricular delay (the time between the start of atrial and ventricular Ca2+ transients) was used to measure impulse conduction velocity and distinguished between slow conduction and prolonged refractoriness as the cause of the conduction block. RESULTS ERG blockers caused bradycardia and atrioventricular block by prolonging the refractory period in the atrioventricular canal and in working ventricular myocytes. In contrast, inhibition of TTCCs caused bradycardia and second-degree block (Mobitz type I) by slowing atrioventricular conduction. TTCC block did not affect ventricular contractility, despite being highly expressed in cardiomyocytes. Concomitant measurement of Ca2+ levels and ventricular size showed mechano-mechanical coupling: increased preload resulted in a stronger heart contraction in vivo. CONCLUSION ERG channels and TTCCs influence the heart rate and atrioventricular conduction in zebrafish larvae. The zebrafish lines expressing Ca2+ biosensors in the heart allow us to investigate physiological feedback mechanisms and complex arrhythmias.
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Affiliation(s)
- Jussep Salgado-Almario
- Physiology and Cell Dynamics, Facultad de Medicina de Albacete, Universidad de Castilla-La Mancha, Albacete, Spain
| | - Yillcer Molina
- Physiology and Cell Dynamics, Facultad de Medicina de Albacete, Universidad de Castilla-La Mancha, Albacete, Spain
| | - Manuel Vicente
- Physiology and Cell Dynamics, Facultad de Medicina de Albacete, Universidad de Castilla-La Mancha, Albacete, Spain
| | - Antonio Martínez-Sielva
- Physiology and Cell Dynamics, Facultad de Medicina de Albacete, Universidad de Castilla-La Mancha, Albacete, Spain
| | - Raúl Rodríguez-García
- Physiology and Cell Dynamics, Facultad de Medicina de Albacete, Universidad de Castilla-La Mancha, Albacete, Spain
| | - Pierre Vincent
- IGF, Univ. Montpellier, CNRS, INSERM, Montpellier, France
| | - Beatriz Domingo
- Physiology and Cell Dynamics, Facultad de Medicina de Albacete, Universidad de Castilla-La Mancha, Albacete, Spain
| | - Juan Llopis
- Physiology and Cell Dynamics, Facultad de Medicina de Albacete, Universidad de Castilla-La Mancha, Albacete, Spain
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2
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Smith A, Auer D, Johnson M, Sanchez E, Ross H, Ward C, Chakravarti A, Kapoor A. Cardiac muscle-restricted partial loss of Nos1ap expression has limited but significant impact on electrocardiographic features. G3 (BETHESDA, MD.) 2023; 13:jkad208. [PMID: 37708408 PMCID: PMC10627271 DOI: 10.1093/g3journal/jkad208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 08/16/2023] [Accepted: 09/06/2023] [Indexed: 09/16/2023]
Abstract
Genome-wide association studies have identified sequence polymorphisms in a functional enhancer of the NOS1AP gene as the most common genetic regulator of QT interval and human cardiac NOS1AP gene expression in the general population. Functional studies based on in vitro overexpression in murine cardiomyocytes and ex vivo knockdown in zebrafish embryonic hearts, by us and others, have also demonstrated that NOS1AP expression levels can alter cellular electrophysiology. Here, to explore the role of NOS1AP in cardiac electrophysiology at an organismal level, we generated and characterized constitutive and heart muscle-restricted Nos1ap knockout mice to assess whether NOS1AP disruption alters the QT interval in vivo. Constitutive loss of Nos1ap led to genetic background-dependent variable lethality at or right before birth. Heart muscle-restricted Nos1ap knockout, generated using cardiac-specific alpha-myosin heavy chain promoter-driven tamoxifen-inducible Cre, resulted in tissue-level Nos1ap expression reduced by half. This partial loss of expression had no detectable effect on the QT interval or other electrocardiographic and echocardiographic parameters, except for a small but significant reduction in the QRS interval. Given that challenges associated with defining the end of the T wave on murine electrocardiogram can limit identification of subtle effects on the QT interval and that common noncoding NOS1AP variants are also associated with the QRS interval, our findings support the role of NOS1AP in regulation of the cardiac electrical cycle.
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Affiliation(s)
- Alexa Smith
- Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Dallas Auer
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Morgan Johnson
- Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Ernesto Sanchez
- Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Holly Ross
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Christopher Ward
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Aravinda Chakravarti
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Center for Human Genetics and Genomics, New York University School of Medicine, New York, NY 10016, USA
| | - Ashish Kapoor
- Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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3
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Elzamzami FD, Samal A, Arun AS, Dharmaraj T, Prasad NR, Rendon-Jonguitud A, DeVine L, Walston JD, Cole RN, Wilson KL. Native lamin A/C proteomes and novel partners from heart and skeletal muscle in a mouse chronic inflammation model of human frailty. Front Cell Dev Biol 2023; 11:1240285. [PMID: 37936983 PMCID: PMC10626543 DOI: 10.3389/fcell.2023.1240285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 10/05/2023] [Indexed: 11/09/2023] Open
Abstract
Clinical frailty affects ∼10% of people over age 65 and is studied in a chronically inflamed (Interleukin-10 knockout; "IL10-KO") mouse model. Frailty phenotypes overlap the spectrum of diseases ("laminopathies") caused by mutations in LMNA. LMNA encodes nuclear intermediate filament proteins lamin A and lamin C ("lamin A/C"), important for tissue-specific signaling, metabolism and chromatin regulation. We hypothesized that wildtype lamin A/C associations with tissue-specific partners are perturbed by chronic inflammation, potentially contributing to dysfunction in frailty. To test this idea we immunoprecipitated native lamin A/C and associated proteins from skeletal muscle, hearts and brains of old (21-22 months) IL10-KO versus control C57Bl/6 female mice, and labeled with Tandem Mass Tags for identification and quantitation by mass spectrometry. We identified 502 candidate lamin-binding proteins from skeletal muscle, and 340 from heart, including 62 proteins identified in both tissues. Candidates included frailty phenotype-relevant proteins Perm1 and Fam210a, and nuclear membrane protein Tmem38a, required for muscle-specific genome organization. These and most other candidates were unaffected by IL10-KO, but still important as potential lamin A/C-binding proteins in native heart or muscle. A subset of candidates (21 in skeletal muscle, 30 in heart) showed significantly different lamin A/C-association in an IL10-KO tissue (p < 0.05), including AldoA and Gins3 affected in heart, and Lmcd1 and Fabp4 affected in skeletal muscle. To screen for binding, eleven candidates plus prelamin A and emerin controls were arrayed as synthetic 20-mer peptides (7-residue stagger) and incubated with recombinant purified lamin A "tail" residues 385-646 under relatively stringent conditions. We detected strong lamin A binding to peptides solvent exposed in Lmcd1, AldoA, Perm1, and Tmem38a, and plausible binding to Csrp3 (muscle LIM protein). These results validated both proteomes as sources for native lamin A/C-binding proteins in heart and muscle, identified four candidate genes for Emery-Dreifuss muscular dystrophy (CSRP3, LMCD1, ALDOA, and PERM1), support a lamin A-interactive molecular role for Tmem38A, and supported the hypothesis that lamin A/C interactions with at least two partners (AldoA in heart, transcription factor Lmcd1 in muscle) are altered in the IL10-KO model of frailty.
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Affiliation(s)
- Fatima D. Elzamzami
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Arushi Samal
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Adith S. Arun
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Tejas Dharmaraj
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Neeti R. Prasad
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Alex Rendon-Jonguitud
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Lauren DeVine
- Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Jeremy D. Walston
- Division of Geriatric Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Robert N. Cole
- Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Katherine L. Wilson
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
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4
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Dash SN, Patnaik L. Flight for fish in drug discovery: a review of zebrafish-based screening of molecules. Biol Lett 2023; 19:20220541. [PMID: 37528729 PMCID: PMC10394424 DOI: 10.1098/rsbl.2022.0541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 07/13/2023] [Indexed: 08/03/2023] Open
Abstract
Human disease and biological practices are modelled in zebrafish (Danio rerio) at various phases of drug development as well as toxicity evaluation. The zebrafish is ideal for in vivo pathological research and high-resolution investigation of disease progress. Zebrafish has an advantage over other mammalian models, it is cost-effective, it has external development and embryo transparency, easy to apply genetic manipulations, and open to both forward and reverse genetic techniques. Drug screening in zebrafish is suitable for target identification, illness modelling, high-throughput screening of compounds for inhibition or prevention of disease phenotypes and developing new drugs. Several drugs that have recently entered the clinic or clinical trials have their origins in zebrafish. The sophisticated screening methods used in zebrafish models are expected to play a significant role in advancing drug development programmes. This review highlights the current developments in drug discovery processes, including understanding the action of drugs in the context of disease and screening novel candidates in neurological diseases, cardiovascular diseases, glomerulopathies and cancer. Additionally, it summarizes the current techniques and approaches for the selection of small molecules and current technical limitations on the execution of zebrafish drug screening tests.
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Affiliation(s)
- Surjya Narayan Dash
- Institute of Biotechnology, Biocenter 2. Viikinkaari, University of Helsinki, Viikinkaari 5D, 00790 Helsinki, Finland
| | - Lipika Patnaik
- Environmental Science Laboratory, Department of Zoology, COE in Environment and Public Health, Ravenshaw University, Cuttack 751003, Odisha, India
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5
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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. NATURE CARDIOVASCULAR RESEARCH 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] [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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6
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Kawaguchi N, Nakanishi T. Animal Disease Models and Patient-iPS-Cell-Derived In Vitro Disease Models for Cardiovascular Biology-How Close to Disease? BIOLOGY 2023; 12:468. [PMID: 36979160 PMCID: PMC10045735 DOI: 10.3390/biology12030468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 03/15/2023] [Accepted: 03/17/2023] [Indexed: 03/22/2023]
Abstract
Currently, zebrafish, rodents, canines, and pigs are the primary disease models used in cardiovascular research. In general, larger animals have more physiological similarities to humans, making better disease models. However, they can have restricted or limited use because they are difficult to handle and maintain. Moreover, animal welfare laws regulate the use of experimental animals. Different species have different mechanisms of disease onset. Organs in each animal species have different characteristics depending on their evolutionary history and living environment. For example, mice have higher heart rates than humans. Nonetheless, preclinical studies have used animals to evaluate the safety and efficacy of human drugs because no other complementary method exists. Hence, we need to evaluate the similarities and differences in disease mechanisms between humans and experimental animals. The translation of animal data to humans contributes to eliminating the gap between these two. In vitro disease models have been used as another alternative for human disease models since the discovery of induced pluripotent stem cells (iPSCs). Human cardiomyocytes have been generated from patient-derived iPSCs, which are genetically identical to the derived patients. Researchers have attempted to develop in vivo mimicking 3D culture systems. In this review, we explore the possible uses of animal disease models, iPSC-derived in vitro disease models, humanized animals, and the recent challenges of machine learning. The combination of these methods will make disease models more similar to human disease.
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Affiliation(s)
- Nanako Kawaguchi
- Department of Pediatric Cardiology and Adult Congenital Cardiology, Tokyo Women’s Medical University, Tokyo 162-8666, Japan;
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7
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Cai D, Zheng Z, Jin X, Fu Y, Cen L, Ye J, Song Y, Lian J. The Advantages, Challenges, and Future of Human-Induced Pluripotent Stem Cell Lines in Type 2 Long QT Syndrome. J Cardiovasc Transl Res 2023; 16:209-220. [PMID: 35976484 DOI: 10.1007/s12265-022-10298-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 07/23/2022] [Indexed: 02/05/2023]
Abstract
Type 2 long QT syndrome (LQT2) is the second most common subtype of long QT syndrome and is caused by mutations in KCHN2 encoding the rapidly activating delayed rectifier potassium channel vital for ventricular repolarization. Sudden cardiac death is a sentinel event of LQT2. Preclinical diagnosis by genetic testing is potentially life-saving.Traditional LQT2 models cannot wholly recapitulate genetic and phenotypic features; therefore, there is a demand for a reliable experimental model. Human-induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) meet this challenge. This review introduces the advantages of the hiPSC-CM model over the traditional model and discusses how hiPSC-CM and gene editing are used to decipher mechanisms of LQT2, screen for cardiotoxicity, and identify therapeutic strategies, thus promoting the realization of precision medicine for LQT2 patients.
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Affiliation(s)
- Dihui Cai
- Department of Cardiovascular, Lihuili Hospital Affiliated to Ningbo University, Ningbo University, Zhejiang Province, Ningbo, China
| | - Zequn Zheng
- Department of Cardiovascular, Lihuili Hospital Affiliated to Ningbo University, Ningbo University, Zhejiang Province, Ningbo, China
- Department of Cardiovascular, First Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Xiaojun Jin
- Department of Cardiovascular, Lihuili Hospital Affiliated to Ningbo University, Ningbo University, Zhejiang Province, Ningbo, China
| | - Yin Fu
- Department of Cardiovascular, Lihuili Hospital Affiliated to Ningbo University, Ningbo University, Zhejiang Province, Ningbo, China
| | - Lichao Cen
- Department of Cardiovascular, Lihuili Hospital Affiliated to Ningbo University, Ningbo University, Zhejiang Province, Ningbo, China
| | - Jiachun Ye
- Department of Cardiovascular, Lihuili Hospital Affiliated to Ningbo University, Ningbo University, Zhejiang Province, Ningbo, China
| | - Yongfei Song
- Department of Cardiovascular, Ningbo Institute of Innovation for Combined Medicine and Engineering, Ningbo, China
| | - Jiangfang Lian
- Department of Cardiovascular, Lihuili Hospital Affiliated to Ningbo University, Ningbo University, Zhejiang Province, Ningbo, China.
- Department of Cardiovascular, Ningbo Institute of Innovation for Combined Medicine and Engineering, Ningbo, China.
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8
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MacRae CA, Peterson RT. Zebrafish as a Mainstream Model for In Vivo Systems Pharmacology and Toxicology. Annu Rev Pharmacol Toxicol 2023; 63:43-64. [PMID: 36151053 DOI: 10.1146/annurev-pharmtox-051421-105617] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Pharmacology and toxicology are part of a much broader effort to understand the relationship between chemistry and biology. While biomedicine has necessarily focused on specific cases, typically of direct human relevance, there are real advantages in pursuing more systematic approaches to characterizing how health and disease are influenced by small molecules and other interventions. In this context, the zebrafish is now established as the representative screenable vertebrate and, through ongoing advances in the available scale of genome editing and automated phenotyping, is beginning to address systems-level solutions to some biomedical problems. The addition of broader efforts to integrate information content across preclinical model organisms and the incorporation of rigorous analytics, including closed-loop deep learning, will facilitate efforts to create systems pharmacology and toxicology with the ability to continuously optimize chemical biological interactions around societal needs. In this review, we outline progress toward this goal.
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Affiliation(s)
- Calum A MacRae
- Harvard Medical School and Brigham and Women's Hospital, Boston, Massachusetts, USA;
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9
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Jänsch M, Lubomirov LT, Trum M, Williams T, Schmitt J, Schuh K, Qadri F, Maier LS, Bader M, Ritter O. Inducible over-expression of cardiac Nos1ap causes short QT syndrome in transgenic mice. FEBS Open Bio 2022; 13:118-132. [PMID: 36352324 PMCID: PMC9808597 DOI: 10.1002/2211-5463.13520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 09/24/2022] [Accepted: 11/09/2022] [Indexed: 11/11/2022] Open
Abstract
Recent evidence demonstrated that alterations in the QT interval duration on the ECG are not only determined by mutations in genes for ion channels, but also by modulators of ion channels. Changes in the QT interval duration beyond certain thresholds are pathological and can lead to sudden cardiac death. We here focus on the ion channel modulator nitric oxide synthase 1 adaptor protein (Nos1ap). Whole-cell patch-clamp measurements of a conditional transgenic mouse model exhibiting cardiac-specific Nos1ap over-expression revealed a Nos1ap-dependent increase of L-type calcium channel nitrosylation, which led to increased susceptibility to ventricular tachycardias associated with a decrease in QT duration and shortening of APD90 duration. Survival was significantly reduced (60% after 12 weeks vs. 100% in controls). Examination of the structural features of the hearts of transgenic mice revealed constant heart dimensions and wall thickness without abnormal fibrosis content or BNP production after 3 months of Nos1ap over-expression compared to controls. Nos1ap over-expression did not alter cGMP production or ROS concentration. Our study showed that myocardial over-expression of Nos1ap leads to the shortening of the QT interval and reduces the survival rate of transgenic animals, perhaps via the development of ventricular arrhythmias. We conclude that Nos1ap overexpression causes targeted subcellular localization of Nos1 to the CaV1.2 with a subsequent decrease of ADP90 and the QT interval. This causes detrimental cardiac arrhythmias in transgenic mice.
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Affiliation(s)
- Monique Jänsch
- Department of Cardiology, Nephrology and Pneumology, Brandenburg Medical SchoolUniversity Hospital BrandenburgGermany
| | | | - Maximilian Trum
- Department of Internal Medicine IIUniversity Hospital RegensburgGermany
| | - Tatjana Williams
- Comprehensive Heart Failure Center and Department of Internal Medicine IUniversity Hospital WürzburgGermany
| | - Joachim Schmitt
- Department of Pharmacology and Clinical PharmacologyHeinrich Heine UniversityDüsseldorfGermany
| | - Kai Schuh
- Institute of PhysiologyUniversity of WürzburgGermany
| | - Fatimunnisa Qadri
- Max‐Delbrück‐Center for Molecular Medicine in the Helmholtz Association (MDC)BerlinGermany
| | - Lars S. Maier
- Department of Internal Medicine IIUniversity Hospital RegensburgGermany
| | - Michael Bader
- Max‐Delbrück‐Center for Molecular Medicine in the Helmholtz Association (MDC)BerlinGermany,German Center for Cardiovascular Research (DZHK)BerlinGermany,Charité University MedicineBerlinGermany,Institute for BiologyUniversity of LübeckGermany
| | - Oliver Ritter
- Department of Cardiology, Nephrology and Pneumology, Brandenburg Medical SchoolUniversity Hospital BrandenburgGermany,Department of Cardiology and Pneumology, Clinic for Internal Medicine IUniversity Hospital BrandenburgGermany,Faculty of Health Sciences, Joint Faculty of the Brandenburg University of Technology Cottbus – SenftenbergThe Brandenburg Medical School Theodor Fontane and the University of PotsdamGermany
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10
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Abstract
Heart disease is the leading cause of death worldwide. Despite decades of research, most heart pathologies have limited treatments, and often the only curative approach is heart transplantation. Thus, there is an urgent need to develop new therapeutic approaches for treating cardiac diseases. Animal models that reproduce the human pathophysiology are essential to uncovering the biology of diseases and discovering therapies. Traditionally, mammals have been used as models of cardiac disease, but the cost of generating and maintaining new models is exorbitant, and the studies have very low throughput. In the last decade, the zebrafish has emerged as a tractable model for cardiac diseases, owing to several characteristics that made this animal popular among developmental biologists. Zebrafish fertilization and development are external; embryos can be obtained in high numbers, are cheap and easy to maintain, and can be manipulated to create new genetic models. Moreover, zebrafish exhibit an exceptional ability to regenerate their heart after injury. This review summarizes 25 years of research using the zebrafish to study the heart, from the classical forward screenings to the contemporary methods to model mutations found in patients with cardiac disease. We discuss the advantages and limitations of this model organism and introduce the experimental approaches exploited in zebrafish, including forward and reverse genetics and chemical screenings. Last, we review the models used to induce cardiac injury and essential ideas derived from studying natural regeneration. Studies using zebrafish have the potential to accelerate the discovery of new strategies to treat cardiac diseases.
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Affiliation(s)
- Juan Manuel González-Rosa
- Cardiovascular Research Center, Massachusetts General Hospital Research Institute, Harvard Medical School, Charlestown, MA
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11
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Bowley G, Kugler E, Wilkinson R, Lawrie A, van Eeden F, Chico TJA, Evans PC, Noël ES, Serbanovic-Canic J. Zebrafish as a tractable model of human cardiovascular disease. Br J Pharmacol 2022; 179:900-917. [PMID: 33788282 DOI: 10.1111/bph.15473] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 03/18/2021] [Accepted: 03/24/2021] [Indexed: 12/17/2022] Open
Abstract
Mammalian models including non-human primates, pigs and rodents have been used extensively to study the mechanisms of cardiovascular disease. However, there is an increasing desire for alternative model systems that provide excellent scientific value while replacing or reducing the use of mammals. Here, we review the use of zebrafish, Danio rerio, to study cardiovascular development and disease. The anatomy and physiology of zebrafish and mammalian cardiovascular systems are compared, and we describe the use of zebrafish models in studying the mechanisms of cardiac (e.g. congenital heart defects, cardiomyopathy, conduction disorders and regeneration) and vascular (endothelial dysfunction and atherosclerosis, lipid metabolism, vascular ageing, neurovascular physiology and stroke) pathologies. We also review the use of zebrafish for studying pharmacological responses to cardiovascular drugs and describe several features of zebrafish that make them a compelling model for in vivo screening of compounds for the treatment cardiovascular disease. LINKED ARTICLES: This article is part of a themed issue on Preclinical Models for Cardiovascular disease research (BJP 75th Anniversary). To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v179.5/issuetoc.
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Affiliation(s)
- George Bowley
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
- Bateson Centre, University of Sheffield, Sheffield, UK
| | - Elizabeth Kugler
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
- Bateson Centre, University of Sheffield, Sheffield, UK
- Institute of Ophthalmology, Faculty of Brain Sciences, University College London, London, UK
| | - Rob Wilkinson
- School of Life Sciences, University of Nottingham, Nottingham, UK
| | - Allan Lawrie
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
| | - Freek van Eeden
- Bateson Centre, University of Sheffield, Sheffield, UK
- Department of Biomedical Science, University of Sheffield, Sheffield, UK
| | - Tim J A Chico
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
- Bateson Centre, University of Sheffield, Sheffield, UK
| | - Paul C Evans
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
- Bateson Centre, University of Sheffield, Sheffield, UK
| | - Emily S Noël
- Bateson Centre, University of Sheffield, Sheffield, UK
- Department of Biomedical Science, University of Sheffield, Sheffield, UK
| | - Jovana Serbanovic-Canic
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
- Bateson Centre, University of Sheffield, Sheffield, UK
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12
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The effective use of blebbistatin to study the action potential of cardiac pacemaker cells of zebrafish (Danio rerio) during incremental warming. Curr Res Physiol 2022; 5:48-54. [PMID: 35128467 PMCID: PMC8803472 DOI: 10.1016/j.crphys.2022.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 01/12/2022] [Accepted: 01/12/2022] [Indexed: 12/11/2022] Open
Abstract
Blebbistatin potently inhibits actin-myosin interaction, preventing contractile activity of excitable cells including cardiac myocytes, despite electrical excitation of an action potential (AP). We collected intracellular microelectrode recordings of pacemaker cells located in the sinoatrial region (SAR) of the zebrafish heart at room temperature and during acute warming to investigate whether or not blebbistatin inhibition of contraction significantly alters pacemaker cell electrophysiology. Changes were evaluated based on 16 variables that characterized the AP waveform. None of these AP variables nor the spontaneous heart rate were significantly modified with the application of 10 μM blebbistatin when recordings were made at room temperature. Compared with the control group, the blebbistatin-treated group showed minor changes in the rate of spontaneous diastolic depolarization (P = 0.027) and the 50% and 80% repolarization (P = 0.008 and 0.010, respectively) in the 26°C–29°C temperature bin, but not at higher temperatures. These findings suggest that blebbistatin is an effective excitation-contraction uncoupler that does not appreciably affect APs generated in pacemaking cells of the SAR and can, therefore, be used in zebrafish cardiac studies. Blebbistatin uncouples excitation-contraction in zebrafish cardiomyocytes. Blebbistatin does not modify the pacemaker action potential variables. Temperature does not modify the effect of blebbistatin. First validation of the use of blebbistatin in adult fish. Methodology of intracellular microelectrode recording of zebrafish pacemaker cells.
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13
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Crotti L, Odening KE, Sanguinetti MC. Heritable arrhythmias associated with abnormal function of cardiac potassium channels. Cardiovasc Res 2021; 116:1542-1556. [PMID: 32227190 DOI: 10.1093/cvr/cvaa068] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 02/24/2020] [Accepted: 03/26/2020] [Indexed: 12/16/2022] Open
Abstract
Cardiomyocytes express a surprisingly large number of potassium channel types. The primary physiological functions of the currents conducted by these channels are to maintain the resting membrane potential and mediate action potential repolarization under basal conditions and in response to changes in the concentrations of intracellular sodium, calcium, and ATP/ADP. Here, we review the diversity and functional roles of cardiac potassium channels under normal conditions and how heritable mutations in the genes encoding these channels can lead to distinct arrhythmias. We briefly review atrial fibrillation and J-wave syndromes. For long and short QT syndromes, we describe their genetic basis, clinical manifestation, risk stratification, traditional and novel therapeutic approaches, as well as insights into disease mechanisms provided by animal and cellular models.
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Affiliation(s)
- Lia Crotti
- Center for Cardiac Arrhythmias of Genetic Origin, Istituto Auxologico Italiano, IRCCS, Milan, Italy.,Laboratory of Cardiovascular Genetics, Istituto Auxologico Italiano, IRCCS, Milan, Italy.,Department of Cardiovascular, Neural and Metabolic Sciences, Istituto Auxologico Italiano, IRCCS, San Luca Hospital, Milan, Italy.,Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | - Katja E Odening
- Department of Cardiology and Angiology I, Heart Center University of Freiburg, Medical Faculty, Freiburg, Germany.,Institute of Experimental Cardiovascular Medicine, Heart Center University of Freiburg, Medical Faculty, Freiburg, Germany.,Department of Cardiology, Translational Cardiology, Inselspital, Bern University Hospital, and Institute of Physiology, University of Bern, Bern, Switzerland
| | - Michael C Sanguinetti
- Department of Internal Medicine, Nora Eccles Harrison Cardiovascular Research and Training Institute, University of Utah, Salt Lake City, UT, USA
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14
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Giacomini KM, Karnes JH, Crews KR, Monte AA, Murphy WA, Oni-Orisan A, Ramsey LB, Yang JJ, Whirl-Carrillo M. Advancing Precision Medicine Through the New Pharmacogenomics Global Research Network. Clin Pharmacol Ther 2021; 110:559-562. [PMID: 34318925 DOI: 10.1002/cpt.2340] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 06/04/2021] [Indexed: 12/16/2022]
Affiliation(s)
- Kathleen M Giacomini
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, California, USA
| | - Jason H Karnes
- Department of Pharmacy Practice and Science, University of Arizona College of Pharmacy, Tucson, Arizona, USA
| | - Kristine R Crews
- Department of Pharmacy and Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Andrew A Monte
- Department of Emergency Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - William A Murphy
- Division of Pharmacotherapy and Experimental Therapeutics, University of North Carolina Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Akinyemi Oni-Orisan
- Department of Clinical Pharmacy, University of California San Francisco, San Francisco, California, USA
| | - Laura B Ramsey
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Division of Research in Patient Services, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio, USA
| | - Jun J Yang
- Department of Pharmacy and Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Michelle Whirl-Carrillo
- Department of Biomedical Data Science, Stanford University School of Medicine, Stanford, California, USA
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15
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Tieu A, Akar FG. 'Social distancing' of the neuronal nitric oxide synthase from its adaptor protein causes arrhythmogenic trigger-substrate interactions in long QT syndrome. Cardiovasc Res 2021; 117:338-340. [PMID: 32589704 DOI: 10.1093/cvr/cvaa179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Andrew Tieu
- Cardiovascular Research Center, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Fadi G Akar
- Department of Internal Medicine, Section of Cardiovascular Medicine, Yale New Haven Hospital, New Haven, CT, USA.,Section of Cardiovascular Medicine, Cardiovascular Research Center (Y-CVRC), Yale University, New Haven, CT, USA
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16
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Zebrafish, an In Vivo Platform to Screen Drugs and Proteins for Biomedical Use. Pharmaceuticals (Basel) 2021; 14:ph14060500. [PMID: 34073947 PMCID: PMC8225009 DOI: 10.3390/ph14060500] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/14/2021] [Accepted: 05/20/2021] [Indexed: 12/28/2022] Open
Abstract
The nearly simultaneous convergence of human genetics and advanced molecular technologies has led to an improved understanding of human diseases. At the same time, the demand for drug screening and gene function identification has also increased, albeit time- and labor-intensive. However, bridging the gap between in vitro evidence from cell lines and in vivo evidence, the lower vertebrate zebrafish possesses many advantages over higher vertebrates, such as low maintenance, high fecundity, light-induced spawning, transparent embryos, short generation interval, rapid embryonic development, fully sequenced genome, and some phenotypes similar to human diseases. Such merits have popularized the zebrafish as a model system for biomedical and pharmaceutical studies, including drug screening. Here, we reviewed the various ways in which zebrafish serve as an in vivo platform to perform drug and protein screening in the fields of rare human diseases, social behavior and cancer studies. Since zebrafish mutations faithfully phenocopy many human disorders, many compounds identified from zebrafish screening systems have advanced to early clinical trials, such as those for Adenoid cystic carcinoma, Dravet syndrome and Diamond-Blackfan anemia. We also reviewed and described how zebrafish are used to carry out environmental pollutant detection and assessment of nanoparticle biosafety and QT prolongation.
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17
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Lane S, More LA, Asnani A. Zebrafish Models of Cancer Therapy-Induced Cardiovascular Toxicity. J Cardiovasc Dev Dis 2021; 8:jcdd8020008. [PMID: 33499052 PMCID: PMC7911266 DOI: 10.3390/jcdd8020008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/11/2021] [Accepted: 01/20/2021] [Indexed: 12/13/2022] Open
Abstract
Purpose of review: Both traditional and novel cancer therapies can cause cardiovascular toxicity in patients. In vivo models integrating both cardiovascular and cancer phenotypes allow for the study of on- and off-target mechanisms of toxicity arising from these agents. The zebrafish is the optimal whole organism model to screen for cardiotoxicity in a high throughput manner, while simultaneously assessing the role of cardiotoxicity pathways on the cancer therapy’s antitumor effect. Here we highlight established zebrafish models of human cardiovascular disease and cancer, the unique advantages of zebrafish to study mechanisms of cancer therapy-associated cardiovascular toxicity, and finally, important limitations to consider when using the zebrafish to study toxicity. Recent findings: Cancer therapy-associated cardiovascular toxicities range from cardiomyopathy with traditional agents to arrhythmias and thrombotic complications associated with newer targeted therapies. The zebrafish can be used to identify novel therapeutic strategies that selectively protect the heart from cancer therapy without affecting antitumor activity. Advances in genome editing technology have enabled the creation of several transgenic zebrafish lines valuable to the study of cardiovascular and cancer pathophysiology. Summary: The high degree of genetic conservation between zebrafish and humans, as well as the ability to recapitulate cardiotoxic phenotypes observed in patients with cancer, make the zebrafish an effective model to study cancer therapy-associated cardiovascular toxicity. Though this model provides several key benefits over existing in vitro and in vivo models, limitations of the zebrafish model include the early developmental stage required for most high-throughput applications.
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Affiliation(s)
- Sarah Lane
- CardioVascular Institute, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA; (S.L.); (L.A.M.)
| | - Luis Alberto More
- CardioVascular Institute, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA; (S.L.); (L.A.M.)
| | - Aarti Asnani
- CardioVascular Institute, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA; (S.L.); (L.A.M.)
- Harvard Medical School, Boston, MA 02115, USA
- Correspondence:
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18
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Simpson KE, Venkateshappa R, Pang ZK, Faizi S, Tibbits GF, Claydon TW. Utility of Zebrafish Models of Acquired and Inherited Long QT Syndrome. Front Physiol 2021; 11:624129. [PMID: 33519527 PMCID: PMC7844309 DOI: 10.3389/fphys.2020.624129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 12/21/2020] [Indexed: 01/12/2023] Open
Abstract
Long-QT Syndrome (LQTS) is a cardiac electrical disorder, distinguished by irregular heart rates and sudden death. Accounting for ∼40% of cases, LQTS Type 2 (LQTS2), is caused by defects in the Kv11.1 (hERG) potassium channel that is critical for cardiac repolarization. Drug block of hERG channels or dysfunctional channel variants can result in acquired or inherited LQTS2, respectively, which are typified by delayed repolarization and predisposition to lethal arrhythmia. As such, there is significant interest in clear identification of drugs and channel variants that produce clinically meaningful perturbation of hERG channel function. While toxicological screening of hERG channels, and phenotypic assessment of inherited channel variants in heterologous systems is now commonplace, affordable, efficient, and insightful whole organ models for acquired and inherited LQTS2 are lacking. Recent work has shown that zebrafish provide a viable in vivo or whole organ model of cardiac electrophysiology. Characterization of cardiac ion currents and toxicological screening work in intact embryos, as well as adult whole hearts, has demonstrated the utility of the zebrafish model to contribute to the development of therapeutics that lack hERG-blocking off-target effects. Moreover, forward and reverse genetic approaches show zebrafish as a tractable model in which LQTS2 can be studied. With the development of new tools and technologies, zebrafish lines carrying precise channel variants associated with LQTS2 have recently begun to be generated and explored. In this review, we discuss the present knowledge and questions raised related to the use of zebrafish as models of acquired and inherited LQTS2. We focus discussion, in particular, on developments in precise gene-editing approaches in zebrafish to create whole heart inherited LQTS2 models and evidence that zebrafish hearts can be used to study arrhythmogenicity and to identify potential anti-arrhythmic compounds.
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Affiliation(s)
- Kyle E. Simpson
- Molecular Cardiac Physiology Group, Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
| | - Ravichandra Venkateshappa
- Molecular Cardiac Physiology Group, Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
| | - Zhao Kai Pang
- Molecular Cardiac Physiology Group, Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
| | - Shoaib Faizi
- Molecular Cardiac Physiology Group, Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
| | - Glen F. Tibbits
- Molecular Cardiac Physiology Group, Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
- Department of Cardiovascular Science, British Columbia Children’s Hospital, Vancouver, BC, Canada
| | - Tom W. Claydon
- Molecular Cardiac Physiology Group, Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
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19
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Varga M, Csályi K, Bertyák I, Menyhárd DK, Poole RJ, Cerveny KL, Kövesdi D, Barátki B, Rouse H, Vad Z, Hawkins TA, Stickney HL, Cavodeassi F, Schwarz Q, Young RM, Wilson SW. Tissue-Specific Requirement for the GINS Complex During Zebrafish Development. Front Cell Dev Biol 2020; 8:373. [PMID: 32548116 PMCID: PMC7270345 DOI: 10.3389/fcell.2020.00373] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 04/27/2020] [Indexed: 12/13/2022] Open
Abstract
Efficient and accurate DNA replication is particularly critical in stem and progenitor cells for successful proliferation and survival. The replisome, an amalgam of protein complexes, is responsible for binding potential origins of replication, unwinding the double helix, and then synthesizing complimentary strands of DNA. According to current models, the initial steps of DNA unwinding and opening are facilitated by the CMG complex, which is composed of a GINS heterotetramer that connects Cdc45 with the mini-chromosome maintenance (Mcm) helicase. In this work, we provide evidence that in the absence of GINS function DNA replication is cell autonomously impaired, and we also show that gins1 and gins2 mutants exhibit elevated levels of apoptosis restricted to actively proliferating regions of the central nervous system (CNS). Intriguingly, our results also suggest that the rapid cell cycles during early embryonic development in zebrafish may not require the function of the canonical GINS complex as neither zygotic Gins1 nor Gins2 isoforms seem to be present during these stages.
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Affiliation(s)
- Máté Varga
- Department of Genetics, ELTE Eötvös Loránd University, Budapest, Hungary.,Department of Cell and Developmental Biology, Division of Biosciences, University College London, London, United Kingdom
| | - Kitti Csályi
- Department of Genetics, ELTE Eötvös Loránd University, Budapest, Hungary
| | - István Bertyák
- Department of Genetics, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Dóra K Menyhárd
- HAS-ELTE Protein Modeling Research Group and Laboratory of Structural Chemistry and Biology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Richard J Poole
- Department of Cell and Developmental Biology, Division of Biosciences, University College London, London, United Kingdom
| | - Kara L Cerveny
- Biology Department, Reed College, Portland, OR, United States
| | - Dorottya Kövesdi
- Office of Supported Research Groups of the Hungarian Academy of Sciences, Budapest, Hungary.,Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Balázs Barátki
- Department of Immunology, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Hannah Rouse
- Department of Cell and Developmental Biology, Division of Biosciences, University College London, London, United Kingdom
| | - Zsuzsa Vad
- Department of Genetics, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Thomas A Hawkins
- Department of Cell and Developmental Biology, Division of Biosciences, University College London, London, United Kingdom
| | - Heather L Stickney
- Department of Cell and Developmental Biology, Division of Biosciences, University College London, London, United Kingdom
| | - Florencia Cavodeassi
- Department of Cell and Developmental Biology, Division of Biosciences, University College London, London, United Kingdom.,Institute of Medical and Biomedical Education, St. George's University of London, London, United Kingdom
| | - Quenten Schwarz
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, SA, Australia
| | - Rodrigo M Young
- Department of Cell and Developmental Biology, Division of Biosciences, University College London, London, United Kingdom
| | - Stephen W Wilson
- Department of Cell and Developmental Biology, Division of Biosciences, University College London, London, United Kingdom
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20
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Shrestha R, Lieberth J, Tillman S, Natalizio J, Bloomekatz J. Using Zebrafish to Analyze the Genetic and Environmental Etiologies of Congenital Heart Defects. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1236:189-223. [PMID: 32304074 DOI: 10.1007/978-981-15-2389-2_8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Congenital heart defects (CHDs) are among the most common human birth defects. However, the etiology of a large proportion of CHDs remains undefined. Studies identifying the molecular and cellular mechanisms that underlie cardiac development have been critical to elucidating the origin of CHDs. Building upon this knowledge to understand the pathogenesis of CHDs requires examining how genetic or environmental stress changes normal cardiac development. Due to strong molecular conservation to humans and unique technical advantages, studies using zebrafish have elucidated both fundamental principles of cardiac development and have been used to create cardiac disease models. In this chapter we examine the unique toolset available to zebrafish researchers and how those tools are used to interrogate the genetic and environmental contributions to CHDs.
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Affiliation(s)
- Rabina Shrestha
- Department of Biology, University of Mississippi, Oxford, MS, USA
| | - Jaret Lieberth
- Department of Biology, University of Mississippi, Oxford, MS, USA
| | - Savanna Tillman
- Department of Biology, University of Mississippi, Oxford, MS, USA
| | - Joseph Natalizio
- Department of Biology, University of Mississippi, Oxford, MS, USA
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21
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Ronchi C, Bernardi J, Mura M, Stefanello M, Badone B, Rocchetti M, Crotti L, Brink P, Schwartz PJ, Gnecchi M, Zaza A. NOS1AP polymorphisms reduce NOS1 activity and interact with prolonged repolarization in arrhythmogenesis. Cardiovasc Res 2020; 117:472-483. [PMID: 32061134 DOI: 10.1093/cvr/cvaa036] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 10/28/2019] [Accepted: 02/10/2020] [Indexed: 12/14/2022] Open
Abstract
AIMS NOS1AP single-nucleotide polymorphisms (SNPs) correlate with QT prolongation and cardiac sudden death in patients affected by long QT syndrome type 1 (LQT1). NOS1AP targets NOS1 to intracellular effectors. We hypothesize that NOS1AP SNPs cause NOS1 dysfunction and this may converge with prolonged action-potential duration (APD) to facilitate arrhythmias. Here we test (i) the effects of NOS1 inhibition and their interaction with prolonged APD in a guinea pig cardiomyocyte (GP-CMs) LQT1 model; (ii) whether pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) from LQT1 patients differing for NOS1AP variants and mutation penetrance display a phenotype compatible with NOS1 deficiency. METHODS AND RESULTS In GP-CMs, NOS1 was inhibited by S-Methyl-L-thiocitrulline acetate (SMTC) or Vinyl-L-NIO hydrochloride (L-VNIO); LQT1 was mimicked by IKs blockade (JNJ303) and β-adrenergic stimulation (isoproterenol). hiPSC-CMs were obtained from symptomatic (S) and asymptomatic (AS) KCNQ1-A341V carriers, harbouring the minor and major alleles of NOS1AP SNPs (rs16847548 and rs4657139), respectively. In GP-CMs, NOS1 inhibition prolonged APD, enhanced ICaL and INaL, slowed Ca2+ decay, and induced delayed afterdepolarizations. Under action-potential clamp, switching to shorter APD suppressed 'transient inward current' events induced by NOS1 inhibition and reduced cytosolic Ca2+. In S (vs. AS) hiPSC-CMs, APD was longer and ICaL larger; NOS1AP and NOS1 expression and co-localization were decreased. CONCLUSION The minor NOS1AP alleles are associated with NOS1 loss of function. The latter likely contributes to APD prolongation in LQT1 and converges with it to perturb Ca2+ handling. This establishes a mechanistic link between NOS1AP SNPs and aggravation of the arrhythmia phenotype in prolonged repolarization syndromes.
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Affiliation(s)
- Carlotta Ronchi
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 2016 Milano, Italy
| | - Joyce Bernardi
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 2016 Milano, Italy
| | - Manuela Mura
- Department of Cardiothoracic and Vascular Sciences, Fondazione IRCCS Policlinico San Matteo - Laboratory of Experimental Cardiology for Cell and Molecular Therapies, Viale Camillo Golgi 19, 27100 Pavia, Italy
| | - Manuela Stefanello
- Department of Cardiothoracic and Vascular Sciences, Fondazione IRCCS Policlinico San Matteo - Laboratory of Experimental Cardiology for Cell and Molecular Therapies, Viale Camillo Golgi 19, 27100 Pavia, Italy
| | - Beatrice Badone
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 2016 Milano, Italy
| | - Marcella Rocchetti
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 2016 Milano, Italy
| | - Lia Crotti
- Center for Cardiac Arrhythmias of Genetic Origin, IRCCS Istituto Auxologico Italiano, Via Pier Lombardo 22, 20135 Milan, Italy.,Department of Medicine and Surgery, University of Milano-Bicocca, Milano, Italy.,Department of Cardiovascular, Neural and Metabolic Sciences, IRCCS Istituto Auxologico Italiano, San Luca Hospital, Milan, Italy
| | - Paul Brink
- Department of Medicine, University of Stellenbosch, Tygerberg, South Africa
| | - Peter J Schwartz
- Center for Cardiac Arrhythmias of Genetic Origin, IRCCS Istituto Auxologico Italiano, Via Pier Lombardo 22, 20135 Milan, Italy
| | - Massimiliano Gnecchi
- Department of Cardiothoracic and Vascular Sciences, Fondazione IRCCS Policlinico San Matteo - Laboratory of Experimental Cardiology for Cell and Molecular Therapies, Viale Camillo Golgi 19, 27100 Pavia, Italy.,Unit of Cardiology, Department of Molecular Medicine, University of Pavia, Pavia, Italy.,Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Antonio Zaza
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 2016 Milano, Italy.,Cardiovascular Research Institute (CARIM), Maastricht University, Maastricht, Netherlands
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22
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Hull CM, Genge CE, Hobbs Y, Rayani K, Lin E, Gunawan M, Shafaattalab S, Tibbits GF, Claydon TW. Investigating the utility of adult zebrafish ex vivo whole hearts to pharmacologically screen hERG channel activator compounds. Am J Physiol Regul Integr Comp Physiol 2019; 317:R921-R931. [PMID: 31664867 DOI: 10.1152/ajpregu.00190.2019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
There is significant interest in the potential utility of small-molecule activator compounds to mitigate cardiac arrhythmia caused by loss of function of hERG1a voltage-gated potassium channels. Zebrafish (Danio rerio) have been proposed as a cost-effective, high-throughput drug-screening model to identify compounds that cause hERG1a dysfunction. However, there are no reports on the effects of hERG1a activator compounds in zebrafish and consequently on the utility of the model to screen for potential gain-of-function therapeutics. Here, we examined the effects of hERG1a blocker and types 1 and 2 activator compounds on isolated zkcnh6a (zERG3) channels in the Xenopus oocyte expression system as well as action potentials recorded from ex vivo adult zebrafish whole hearts using optical mapping. Our functional data from isolated zkcnh6a channels show that under the conditions tested, these channels are blocked by hERG1a channel blockers (dofetilide and terfenadine), and activated by type 1 (RPR260243) and type 2 (NS1643, PD-118057) hERG1a activators with higher affinity than hKCNH2a channels (except NS1643), with differences accounted for by different biophysical properties in the two channels. In ex vivo zebrafish whole hearts, two of the three hERG1a activators examined caused abbreviation of the action potential duration (APD), whereas hERG1a blockers caused APD prolongation. These data represent, to our knowledge, the first pharmacological characterization of isolated zkcnh6a channels and the first assessment of hERG enhancing therapeutics in zebrafish. Our findings lead us to suggest that the zebrafish ex vivo whole heart model serves as a valuable tool in the screening of hKCNH2a blocker and activator compounds.
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Affiliation(s)
- Christina M Hull
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Christine E Genge
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Yuki Hobbs
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Kaveh Rayani
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Eric Lin
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Marvin Gunawan
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Sanam Shafaattalab
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Glen F Tibbits
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Tom W Claydon
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada
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23
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Zhao Y, Zhang K, Sips P, MacRae CA. Screening drugs for myocardial disease in vivo with zebrafish: an expert update. Expert Opin Drug Discov 2019; 14:343-353. [PMID: 30836799 DOI: 10.1080/17460441.2019.1577815] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Our understanding of the complexity of cardiovascular disease pathophysiology remains very incomplete and has hampered cardiovascular drug development over recent decades. The prevalence of cardiovascular diseases and their increasing global burden call for novel strategies to address disease biology and drug discovery. Areas covered: This review describes the recent history of cardiovascular drug discovery using in vivo phenotype-based screening in zebrafish. The rationale for the use of this model is highlighted and the initial efforts in the fields of disease modeling and high-throughput screening are illustrated. Finally, the advantages and limitations of in vivo zebrafish screening are discussed, highlighting newer approaches, such as genome editing technologies, to accelerate our understanding of disease biology and the development of precise disease models. Expert opinion: Full understanding and faithful modeling of specific cardiovascular disease is a rate-limiting step for cardiovascular drug discovery. The resurgence of in vivo phenotype screening together with the advancement of systems biology approaches allows for the identification of lead compounds which show efficacy on integrative disease biology in the absence of validated targets. This strategy bypasses current gaps in knowledge of disease biology and paves the way for successful drug discovery and downstream molecular target identification.
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Affiliation(s)
- Yanbin Zhao
- a School of Environmental Science and Engineering , Shanghai Jiao Tong University , Shanghai , China.,b Shanghai Institute of Pollution Control and Ecological Security, Tongji University , Shanghai , China.,c Cardiovascular Medicine , Brigham and Women's Hospital, Harvard Medical School , Boston , MA , USA
| | - Kun Zhang
- a School of Environmental Science and Engineering , Shanghai Jiao Tong University , Shanghai , China.,b Shanghai Institute of Pollution Control and Ecological Security, Tongji University , Shanghai , China.,c Cardiovascular Medicine , Brigham and Women's Hospital, Harvard Medical School , Boston , MA , USA
| | - Patrick Sips
- d Center for Medical Genetics, Department of Biomolecular Medicine , Ghent University , Ghent , Belgium
| | - Calum A MacRae
- c Cardiovascular Medicine , Brigham and Women's Hospital, Harvard Medical School , Boston , MA , USA
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24
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Lu Y, Boswell W, Boswell M, Klotz B, Kneitz S, Regneri J, Savage M, Mendoza C, Postlethwait J, Warren WC, Schartl M, Walter RB. Application of the Transcriptional Disease Signature (TDSs) to Screen Melanoma-Effective Compounds in a Small Fish Model. Sci Rep 2019; 9:530. [PMID: 30679619 PMCID: PMC6345854 DOI: 10.1038/s41598-018-36656-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 11/22/2018] [Indexed: 12/20/2022] Open
Abstract
Cell culture and protein target-based compound screening strategies, though broadly utilized in selecting candidate compounds, often fail to eliminate candidate compounds with non-target effects and/or safety concerns until late in the drug developmental process. Phenotype screening using intact research animals is attractive because it can help identify small molecule candidate compounds that have a high probability of proceeding to clinical use. Most FDA approved, first-in-class small molecules were identified from phenotypic screening. However, phenotypic screening using rodent models is labor intensive, low-throughput, and very expensive. As a novel alternative for small molecule screening, we have been developing gene expression disease profiles, termed the Transcriptional Disease Signature (TDS), as readout of small molecule screens for therapeutic molecules. In this concept, compounds that can reverse, or otherwise affect known disease-associated gene expression patterns in whole animals may be rapidly identified for more detailed downstream direct testing of their efficacy and mode of action. To establish proof of concept for this screening strategy, we employed a transgenic strain of a small aquarium fish, medaka (Oryzias latipes), that overexpresses the malignant melanoma driver gene xmrk, a mutant egfr gene, that is driven by a pigment cell-specific mitf promoter. In this model, melanoma develops with 100% penetrance. Using the transgenic medaka malignant melanoma model, we established a screening system that employs the NanoString nCounter platform to quantify gene expression within custom sets of TDS gene targets that we had previously shown to exhibit differential transcription among xmrk-transgenic and wild-type medaka. Compound-modulated gene expression was identified using an internet-accessible custom-built data processing pipeline. The effect of a given drug on the entire TDS profile was estimated by comparing compound-modulated genes in the TDS using an activation Z-score and Kolmogorov-Smirnov statistics. TDS gene probes were designed that target common signaling pathways that include proliferation, development, toxicity, immune function, metabolism and detoxification. These pathways may be utilized to evaluate candidate compounds for potential favorable, or unfavorable, effects on melanoma-associated gene expression. Here we present the logistics of using medaka to screen compounds, as well as, the development of a user-friendly NanoString data analysis pipeline to support feasibility of this novel TDS drug-screening strategy.
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Affiliation(s)
- Yuan Lu
- Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, San Marcos, TX, USA
| | - William Boswell
- Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, San Marcos, TX, USA
| | - Mikki Boswell
- Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, San Marcos, TX, USA
| | - Barbara Klotz
- Developmental Biochemistry, Biozentrum, University of Würzburg, Würzburg, Germany.,Comprehensive Cancer Center Mainfranken, University Clinic Würzburg, D-97074, Würzburg, Germany
| | - Susanne Kneitz
- Developmental Biochemistry, Biozentrum, University of Würzburg, Würzburg, Germany.,Comprehensive Cancer Center Mainfranken, University Clinic Würzburg, D-97074, Würzburg, Germany
| | - Janine Regneri
- Developmental Biochemistry, Biozentrum, University of Würzburg, Würzburg, Germany.,Comprehensive Cancer Center Mainfranken, University Clinic Würzburg, D-97074, Würzburg, Germany
| | - Markita Savage
- Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, San Marcos, TX, USA
| | - Cristina Mendoza
- Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, San Marcos, TX, USA
| | - John Postlethwait
- Institute of Neuroscience, University of Oregon, Eugene, Oregon, USA
| | | | - Manfred Schartl
- Developmental Biochemistry, Biozentrum, University of Würzburg, Würzburg, Germany.,Comprehensive Cancer Center Mainfranken, University Clinic Würzburg, D-97074, Würzburg, Germany.,Hagler Institute for Advanced Studies and Department of Biology, Texas A&M University, College Station, USA
| | - Ronald B Walter
- Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, San Marcos, TX, USA.
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25
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Schwartz PJ, Crotti L, George AL. Modifier genes for sudden cardiac death. Eur Heart J 2018; 39:3925-3931. [PMID: 30215713 PMCID: PMC6247660 DOI: 10.1093/eurheartj/ehy502] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 08/28/2018] [Indexed: 01/07/2023] Open
Abstract
Genetic conditions, even those associated with identical gene mutations, can present with variable clinical manifestations. One widely accepted explanation for this phenomenon is the existence of genetic factors capable of modifying the consequences of disease-causing mutations (modifier genes). Here, we address the concepts and principles by which genetic factors may be involved in modifying risk for cardiac arrhythmia, then discuss the current knowledge and interpretation of their contribution to clinical heterogeneity. We illustrate these concepts in the context of two important clinical conditions associated with risk for sudden cardiac death including a monogenic disorder (congenital long QT syndrome) in which the impact of modifier genes has been established, and a complex trait (life-threatening arrhythmias in acute myocardial infarction) for which the search for genetic modifiers of arrhythmic risk is more challenging. Advances in understanding the contribution of modifier genes to a higher or lower propensity towards sudden death should improve patient-specific risk stratification and be a major step towards precision medicine.
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Affiliation(s)
- Peter J Schwartz
- Istituto Auxologico Italiano, IRCCS, Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, Via Pier Lombardo, 22, Milan, Italy
- Corresponding author. Tel: +39 02 55000408, Fax: +39 02 55000411, ;
| | - Lia Crotti
- Istituto Auxologico Italiano, IRCCS, Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, Via Pier Lombardo, 22, Milan, Italy
- Department of Medicine and Surgery, University of Milano-Bicocca, Via Cadore, 48, Monza, Italy
- Istituto Auxologico Italiano, IRCCS, Department of Cardiovascular, Neural and Metabolic Sciences, San Luca Hospital, Piazzale Brescia 20, Milan, Italy
| | - Alfred L George
- Department of Pharmacology, Northwestern University Feinberg School of Medicine, Searle 8-510, East Superior Street, Chicago, IL, USA
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26
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Boswell M, Boswell W, Lu Y, Savage M, Mazurek Z, Chang J, Muster J, Walter R. The transcriptional response of skin to fluorescent light exposure in viviparous (Xiphophorus) and oviparous (Danio, Oryzias) fishes. Comp Biochem Physiol C Toxicol Pharmacol 2018; 208:77-86. [PMID: 29017858 PMCID: PMC5889750 DOI: 10.1016/j.cbpc.2017.10.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 09/26/2017] [Accepted: 10/04/2017] [Indexed: 01/14/2023]
Abstract
Differences in light sources are common in animal facilities and potentially can impact experimental results. Here, the potential impact of lighting differences on skin transcriptomes has been tested in three aquatic animal models commonly utilized in biomedical research, (Xiphophorus maculatus (platyfish), Oryzias latipes (medaka) and Danio rerio (zebrafish). Analysis of replicate comparative RNA-Seq data showed the transcriptional response to commonly utilized 4100K or "cool white" fluorescent light (FL) is much greater in platyfish and medaka than in zebrafish. FL induces genes associated with inflammatory and immune responses in both medaka and zebrafish; however, the platyfish exhibit suppression of genes involved with immune/inflammation, as well as genes associated with cell cycle progression. Furthermore, comparative analyses of gene expression data from platyfish UVB exposures, with medaka and zebrafish after exposure to 4100K FL, show comparable effects on the same stress pathways. We suggest the response to light is conserved, but that long-term adaptation to species specific environmental niches has resulted in a shifting of the wavelengths required to incite similar "genetic" responses in skin. We forward the hypothesis that the "genetic perception" of light may have evolved differently than ocular perception and suggest that light type (i.e., wavelengths emitted) is an important parameter to consider in experimental design.
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Affiliation(s)
- Mikki Boswell
- The Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, San Marcos, TX 78666, USA.
| | - William Boswell
- The Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, San Marcos, TX 78666, USA.
| | - Yuan Lu
- The Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, San Marcos, TX 78666, USA.
| | - Markita Savage
- The Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, San Marcos, TX 78666, USA.
| | - Zachary Mazurek
- The Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, San Marcos, TX 78666, USA.
| | - Jordan Chang
- The Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, San Marcos, TX 78666, USA.
| | - Jeanot Muster
- Howard Hughes Medical Institute, University of Washington, 850 Republican Street, Seattle, WA 98109, USA.
| | - Ronald Walter
- The Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, San Marcos, TX 78666, USA.
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27
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Zhu XY, Wu SQ, Guo SY, Yang H, Xia B, Li P, Li CQ. A Zebrafish Heart Failure Model for Assessing Therapeutic Agents. Zebrafish 2018; 15:243-253. [DOI: 10.1089/zeb.2017.1546] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Xiao-Yu Zhu
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing City, China
- Hunter Biotechnology, Inc., Hangzhou City, China
| | - Si-Qi Wu
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing City, China
| | - Sheng-Ya Guo
- Hunter Biotechnology, Inc., Hangzhou City, China
| | - Hua Yang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing City, China
| | - Bo Xia
- Hunter Biotechnology, Inc., Hangzhou City, China
| | - Ping Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing City, China
| | - Chun-Qi Li
- Hunter Biotechnology, Inc., Hangzhou City, China
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28
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Tucker NR, Dolmatova EV, Lin H, Cooper RR, Ye J, Hucker WJ, Jameson HS, Parsons VA, Weng LC, Mills RW, Sinner MF, Imakaev M, Leyton-Mange J, Vlahakes G, Benjamin EJ, Lunetta KL, Lubitz SA, Mirny L, Milan DJ, Ellinor PT. Diminished PRRX1 Expression Is Associated With Increased Risk of Atrial Fibrillation and Shortening of the Cardiac Action Potential. ACTA ACUST UNITED AC 2018; 10:CIRCGENETICS.117.001902. [PMID: 28974514 DOI: 10.1161/circgenetics.117.001902] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 08/02/2017] [Indexed: 12/18/2022]
Abstract
BACKGROUND Atrial fibrillation (AF) affects over 33 million individuals worldwide. Genome-wide association studies have identified at least 30 AF loci, but the mechanisms through which individual variants lead to altered disease risk have remained unclear for the majority of these loci. At the 1q24 locus, we hypothesized that the transcription factor PRRX1 could be a strong candidate gene as it is expressed in the pulmonary veins, a source of AF in many individuals. We sought to identify the molecular mechanism, whereby variation at 1q24 may lead to AF susceptibility. METHODS AND RESULTS We sequenced a ≈158 kb region encompassing PRRX1 in 962 individuals with and without AF. We identified a broad region of association with AF at the 1q24 locus. Using in silico prediction and functional validation, we identified an enhancer that interacts with the promoter of PRRX1 in cells of cardiac lineage. Within this enhancer, we identified a single-nucleotide polymorphism, rs577676, which alters enhancer activity in a mouse atrial cell line and in embryonic zebrafish and differentially regulates PRRX1 expression in human left atria. We found that suppression of PRRX1 in human embryonic stem cell-derived cardiomyocytes and embryonic zebrafish resulted in shortening of the atrial action potential duration, a hallmark of AF. CONCLUSIONS We have identified a functional genetic variant that alters PRRX1 expression, ultimately resulting in electrophysiological alterations in atrial myocytes that may promote AF.
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Affiliation(s)
- Nathan R Tucker
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Elena V Dolmatova
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Honghuang Lin
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Rebecca R Cooper
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Jiangchuan Ye
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - William J Hucker
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Heather S Jameson
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Victoria A Parsons
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Lu-Chen Weng
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Robert W Mills
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Moritz F Sinner
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Maxim Imakaev
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Jordan Leyton-Mange
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Gus Vlahakes
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Emelia J Benjamin
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Kathryn L Lunetta
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Steven A Lubitz
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Leonid Mirny
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - David J Milan
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.)
| | - Patrick T Ellinor
- From the Cardiovascular Research Center (N.R.T., E.V.D., R.R.C., J.Y., W.J.H., H.S.J., V.A.P., L.-C.W., R.W.M., J.L.-M., S.A.L., D.J.M., P.T.E.) and Department of Surgery (G.V.), Massachusetts General Hospital, Boston; National Heart, Lung and Blood Institute's and Boston University's Framingham Heart, MA (H.L., E.J.B., K.L.L.); Computational Biomedicine Section (H.L.), Cardiology Section (E.J.B.), and Preventive Medicine Section (E.J.B.), Department of Medicine, Boston University School of Medicine, MA; Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Germany (M.F.S.); Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, Cambridge (M.I., L.M.); Department of Epidemiology (E.J.B.) and Department of Biostatistics (K.L.L.), Boston University School of Public Health, MA; and Program in Medical and Populations Genetics, Broad Institute, Cambridge, MA (S.A.L., D.J.M., P.T.E.).
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Gut P, Reischauer S, Stainier DYR, Arnaout R. LITTLE FISH, BIG DATA: ZEBRAFISH AS A MODEL FOR CARDIOVASCULAR AND METABOLIC DISEASE. Physiol Rev 2017; 97:889-938. [PMID: 28468832 PMCID: PMC5817164 DOI: 10.1152/physrev.00038.2016] [Citation(s) in RCA: 192] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 01/09/2017] [Accepted: 01/10/2017] [Indexed: 12/17/2022] Open
Abstract
The burden of cardiovascular and metabolic diseases worldwide is staggering. The emergence of systems approaches in biology promises new therapies, faster and cheaper diagnostics, and personalized medicine. However, a profound understanding of pathogenic mechanisms at the cellular and molecular levels remains a fundamental requirement for discovery and therapeutics. Animal models of human disease are cornerstones of drug discovery as they allow identification of novel pharmacological targets by linking gene function with pathogenesis. The zebrafish model has been used for decades to study development and pathophysiology. More than ever, the specific strengths of the zebrafish model make it a prime partner in an age of discovery transformed by big-data approaches to genomics and disease. Zebrafish share a largely conserved physiology and anatomy with mammals. They allow a wide range of genetic manipulations, including the latest genome engineering approaches. They can be bred and studied with remarkable speed, enabling a range of large-scale phenotypic screens. Finally, zebrafish demonstrate an impressive regenerative capacity scientists hope to unlock in humans. Here, we provide a comprehensive guide on applications of zebrafish to investigate cardiovascular and metabolic diseases. We delineate advantages and limitations of zebrafish models of human disease and summarize their most significant contributions to understanding disease progression to date.
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Affiliation(s)
- Philipp Gut
- Nestlé Institute of Health Sciences, EPFL Innovation Park, Lausanne, Switzerland; Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and Cardiovascular Research Institute and Division of Cardiology, Department of Medicine, University of California San Francisco, San Francisco, California
| | - Sven Reischauer
- Nestlé Institute of Health Sciences, EPFL Innovation Park, Lausanne, Switzerland; Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and Cardiovascular Research Institute and Division of Cardiology, Department of Medicine, University of California San Francisco, San Francisco, California
| | - Didier Y R Stainier
- Nestlé Institute of Health Sciences, EPFL Innovation Park, Lausanne, Switzerland; Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and Cardiovascular Research Institute and Division of Cardiology, Department of Medicine, University of California San Francisco, San Francisco, California
| | - Rima Arnaout
- Nestlé Institute of Health Sciences, EPFL Innovation Park, Lausanne, Switzerland; Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and Cardiovascular Research Institute and Division of Cardiology, Department of Medicine, University of California San Francisco, San Francisco, California
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30
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Daniele LL, Emran F, Lobo GP, Gaivin RJ, Perkins BD. Mutation of wrb, a Component of the Guided Entry of Tail-Anchored Protein Pathway, Disrupts Photoreceptor Synapse Structure and Function. Invest Ophthalmol Vis Sci 2017; 57:2942-54. [PMID: 27273592 PMCID: PMC4898200 DOI: 10.1167/iovs.15-18996] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
PURPOSE Tail-anchored (TA) proteins contain a single hydrophobic domain at the C-terminus and are posttranslationally inserted into the ER membrane via the GET (guided entry of tail-anchored proteins) pathway. The role of the GET pathway in photoreceptors is unexplored. The goal of this study was to characterize the zebrafish pinball wizard mutant, which disrupts Wrb, a core component of the GET pathway. METHODS Electroretinography, optokinetic response measurements (OKR), immunohistochemistry, and electron microscopy analyses were employed to assess ribbon synapse function, protein expression, and ultrastructure in 5-day-old zebrafish larvae. Expression of wrb was investigated with real-time qRT-PCR and in situ hybridization. RESULTS Mutation of wrb abolished the OKR and greatly diminished the ERG b-wave, but not the a-wave. Ribeye and SV2 were partially mislocalized in both photoreceptors and hair cells of wrb mutants. Fewer contacts were seen between photoreceptors and bipolar cells in wrb-/- mutants. Expression of wrb was observed throughout the nervous system and Wrb localized to the ER and synaptic region of photoreceptors. Morpholino knockdown of the cytosolic ATPase trc40, which targets TA proteins to the ER, also diminished the OKR. Overexpression of wrb fully restored contrast sensitivity in mutants, while overexpression of mutant wrbR73A, which cannot bind Trc40, did not. CONCLUSIONS Proteins Wrb and Trc40 are required for synaptic transmission between photoreceptors and bipolar cells, indicating that TA protein insertion by the TRC pathway is a critical step in ribbon synapse assembly and function.
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Affiliation(s)
- Lauren L Daniele
- Department of Ophthalmic Research Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States
| | - Farida Emran
- Centre for Research in Neuroscience, McGill University, Montreal, Quebec, Canada
| | - Glenn P Lobo
- Department of Ophthalmic Research Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States
| | - Robert J Gaivin
- Department of Ophthalmic Research Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States
| | - Brian D Perkins
- Department of Ophthalmic Research Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio, United States
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Kithcart A, MacRae CA. Using Zebrafish for High-Throughput Screening of Novel Cardiovascular Drugs. JACC Basic Transl Sci 2017; 2:1-12. [PMID: 30167552 PMCID: PMC6113531 DOI: 10.1016/j.jacbts.2017.01.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 01/17/2017] [Accepted: 01/17/2017] [Indexed: 12/11/2022]
Abstract
Cardiovascular diseases remain a major challenge for modern drug discovery. The diseases are chronic, complex, and the result of sophisticated interactions between genetics and environment involving multiple cell types and a host of systemic factors. The clinical events are often abrupt, and the diseases may be asymptomatic until a highly morbid event. Target selection is often based on limited information, and though highly specific agents are often identified in screening, their final efficacy is often compromised by unanticipated systemic responses, a narrow therapeutic index, or substantial toxicities. Our understanding of complexity of cardiovascular disease has grown dramatically over the past 2 decades, and the range of potential disease mechanisms now includes pathways previously thought only tangentially involved in cardiac or vascular disease. Despite these insights, the majority of active cardiovascular agents derive from a remarkably small number of classes of agents and target a very limited number of pathways. These agents have often been used initially for particular indications and then discovered serendipitously to have efficacy in other cardiac disorders or in a manner unrelated to their original mechanism of action. In this review, the rationale for in vivo screening is described, and the utility of the zebrafish for this approach and for complementary work in functional genomics is discussed. Current limitations of the model in this setting and the need for careful validation in new disease areas are also described. An overview is provided of the complex mechanisms underlying most clinical cardiovascular diseases, and insight is offered into the limits of single downstream pathways as drug targets. The zebrafish is introduced as a model organism, in particular for cardiovascular biology. Potential approaches to overcoming the hurdles to drug discovery in the face of complex biology are discussed, including in vivo screening of zebrafish genetic disease models.
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Affiliation(s)
- Aaron Kithcart
- Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.,The Broad Institute of MIT and Harvard, Harvard Stem Cell Institute, Boston, Massachusetts
| | - Calum A MacRae
- Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.,The Broad Institute of MIT and Harvard, Harvard Stem Cell Institute, Boston, Massachusetts
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Abstract
The QT interval on surface electrocardiograms provides a model of a multicomponent integrated readout of many biological systems, including ion channels, modulatory subunits, signaling systems that modulate their activity, and mechanisms that regulate the expression of their responsible genes. The problem of drug exposure causing exaggerated QT interval prolongation and torsades de pointes highlights the multicomponent nature of cardiac repolarization and the way in which simple perturbations can yield exaggerated responses. Future directions will involve cellular approaches coupled to evolving technologies that can interrogate multicellular systems and provide a sophisticated view of mechanisms in this previously idiosyncratic drug reaction.
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Affiliation(s)
- Dan M Roden
- Oates Institute for Experimental Therapeutics, Vanderbilt University School of Medicine, 1285 MRB IV, Nashville, TN 37232-0575, USA.
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Fox CS, Hall JL, Arnett DK, Ashley EA, Delles C, Engler MB, Freeman MW, Johnson JA, Lanfear DE, Liggett SB, Lusis AJ, Loscalzo J, MacRae CA, Musunuru K, Newby LK, O'Donnell CJ, Rich SS, Terzic A. Future translational applications from the contemporary genomics era: a scientific statement from the American Heart Association. Circulation 2015; 131:1715-36. [PMID: 25882488 DOI: 10.1161/cir.0000000000000211] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The field of genetics and genomics has advanced considerably with the achievement of recent milestones encompassing the identification of many loci for cardiovascular disease and variable drug responses. Despite this achievement, a gap exists in the understanding and advancement to meaningful translation that directly affects disease prevention and clinical care. The purpose of this scientific statement is to address the gap between genetic discoveries and their practical application to cardiovascular clinical care. In brief, this scientific statement assesses the current timeline for effective translation of basic discoveries to clinical advances, highlighting past successes. Current discoveries in the area of genetics and genomics are covered next, followed by future expectations, tools, and competencies for achieving the goal of improving clinical care.
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Das SK, Ma L, Sharma NK. Adipose tissue gene expression and metabolic health of obese adults. Int J Obes (Lond) 2014; 39:869-73. [PMID: 25520251 PMCID: PMC4422777 DOI: 10.1038/ijo.2014.210] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 11/26/2014] [Accepted: 11/30/2014] [Indexed: 01/12/2023]
Abstract
Obese subjects with a similar body mass index (BMI) exhibit substantial heterogeneity in gluco- and cardiometabolic heath phenotypes. However, defining genes that underlie the heterogeneity of metabolic features among obese individuals and determining metabolically healthy and unhealthy phenotypes remain challenging. We conducted unsupervised hierarchical clustering analysis of subcutaneous adipose tissue transcripts from 30 obese men and women ⩾40 years old. Despite similar BMIs in all subjects, we found two distinct subgroups, one metabolically healthy (group 1) and one metabolically unhealthy (group 2). Subjects in group 2 showed significantly higher total cholesterol (P=0.005), low-density lipoprotein cholesterol (P=0.006), 2-h insulin during oral glucose tolerance test (P=0.015) and lower insulin sensitivity (SI, P=0.029) compared with group 1. We identified significant upregulation of 141 genes (for example, MMP9 and SPP1) and downregulation of 17 genes (for example, NDRG4 and GINS3) in group 2 subjects. Intriguingly, these differentially expressed transcripts were enriched for genes involved in cardiovascular disease-related processes (P=2.81 × 10(-11)-3.74 × 10(-02)) and pathways involved in immune and inflammatory response (P=8.32 × 10(-5)-0.04). Two downregulated genes, NDRG4 and GINS3, have been located in a genomic interval associated with cardiac repolarization in published GWASs and zebra fish knockout models. Our study provides evidence that perturbations in the adipose tissue gene expression network are important in defining metabolic health in obese subjects.
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Affiliation(s)
- S K Das
- Department of Internal Medicine, Section on Endocrinology and Metabolism, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - L Ma
- Department of Internal Medicine, Section on Endocrinology and Metabolism, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - N K Sharma
- Department of Internal Medicine, Section on Endocrinology and Metabolism, Wake Forest School of Medicine, Winston-Salem, NC, USA
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Sinner MF, Tucker NR, Lunetta KL, Ozaki K, Smith JG, Trompet S, Bis JC, Lin H, Chung MK, Nielsen JB, Lubitz SA, Krijthe BP, Magnani JW, Ye J, Gollob MH, Tsunoda T, Müller-Nurasyid M, Lichtner P, Peters A, Dolmatova E, Kubo M, Smith JD, Psaty BM, Smith NL, Jukema JW, Chasman DI, Albert CM, Ebana Y, Furukawa T, MacFarlane P, Harris TB, Darbar D, Dörr M, Holst AG, Svendsen JH, Hofman A, Uitterlinden AG, Gudnason V, Isobe M, Malik R, Dichgans M, Rosand J, Van Wagoner DR, Benjamin EJ, Milan DJ, Melander O, Heckbert SR, Ford I, Liu Y, Barnard J, Olesen MS, Stricker BH, Tanaka T, Kääb S, Ellinor PT. Integrating genetic, transcriptional, and functional analyses to identify 5 novel genes for atrial fibrillation. Circulation 2014; 130:1225-35. [PMID: 25124494 PMCID: PMC4190011 DOI: 10.1161/circulationaha.114.009892] [Citation(s) in RCA: 154] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND Atrial fibrillation (AF) affects >30 million individuals worldwide and is associated with an increased risk of stroke, heart failure, and death. AF is highly heritable, yet the genetic basis for the arrhythmia remains incompletely understood. METHODS AND RESULTS To identify new AF-related genes, we used a multifaceted approach, combining large-scale genotyping in 2 ethnically distinct populations, cis-eQTL (expression quantitative trait loci) mapping, and functional validation. Four novel loci were identified in individuals of European descent near the genes NEURL (rs12415501; relative risk [RR]=1.18; 95% confidence interval [CI], 1.13-1.23; P=6.5×10(-16)), GJA1 (rs13216675; RR=1.10; 95% CI, 1.06-1.14; P=2.2×10(-8)), TBX5 (rs10507248; RR=1.12; 95% CI, 1.08-1.16; P=5.7×10(-11)), and CAND2 (rs4642101; RR=1.10; 95% CI, 1.06-1.14; P=9.8×10(-9)). In Japanese, novel loci were identified near NEURL (rs6584555; RR=1.32; 95% CI, 1.26-1.39; P=2.0×10(-25)) and CUX2 (rs6490029; RR=1.12; 95% CI, 1.08-1.16; P=3.9×10(-9)). The top single-nucleotide polymorphisms or their proxies were identified as cis-eQTLs for the genes CAND2 (P=2.6×10(-19)), GJA1 (P=2.66×10(-6)), and TBX5 (P=1.36×10(-5)). Knockdown of the zebrafish orthologs of NEURL and CAND2 resulted in prolongation of the atrial action potential duration (17% and 45%, respectively). CONCLUSIONS We have identified 5 novel loci for AF. Our results expand the diversity of genetic pathways implicated in AF and provide novel molecular targets for future biological and pharmacological investigation.
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Affiliation(s)
- Moritz F. Sinner
- Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Munich, Germany
| | - Nathan R. Tucker
- Cardiovascular Research Center, Massachusetts General Hospital, Charlestown, MA
| | - Kathryn L. Lunetta
- Department of Biostatistics, Boston University School of Public Health, Boston, MA
- National Heart, Lung and Blood Institute’s and Boston University's Framingham Heart Study, Framingham, MA
| | - Kouichi Ozaki
- Laboratory for Cardiovascular Diseases, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - J. Gustav Smith
- Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, MA
- Department of Cardiology, Lund University, Lund, Sweden
| | - Stella Trompet
- Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Joshua C. Bis
- Cardiovascular Health Research Unit, University of Washington, Seattle, WA
- Department of Medicine, University of Washington, Seattle, WA
| | - Honghuang Lin
- National Heart, Lung and Blood Institute’s and Boston University's Framingham Heart Study, Framingham, MA
- Computational Biomedicine Section, Department of Medicine, Boston University School of Medicine, Boston, MA
| | - Mina K. Chung
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH
| | - Jonas B. Nielsen
- Danish National Research Foundation Centre for Cardiac Arrhythmia, Copenhagen, Denmark
- Laboratory for Molecular Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Steven A. Lubitz
- Cardiovascular Research Center, Massachusetts General Hospital, Charlestown, MA
- Cardiac Arrhythmia Service, Masschusetts General Hospital, Boston, MA
| | - Bouwe P. Krijthe
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
- Netherlands Consortium for Healthy Aging (NCHA), Netherlands
| | - Jared W. Magnani
- Cardiology Section, Department of Medicine, Boston University School of Medicine, Boston, MA
| | - Jiangchuan Ye
- Cardiovascular Research Center, Massachusetts General Hospital, Charlestown, MA
| | - Michael H. Gollob
- Arrhythmia Research Laboratory, University of Ottawa Heart Institute, Ottawa, Ontario, Canada
| | - Tatsuhiko Tsunoda
- Laboratory for Medical Science Mathematics, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Martina Müller-Nurasyid
- Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Munich, Germany
- Institute of Genetic Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
- Institute of Medical Informatics, Biometry and Epidemiology, Ludwig-Maximilians-University, Munich, Germany
| | - Peter Lichtner
- Institute of Human Genetics, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - Annette Peters
- Deutsches Zentrum für Herz- Kreislaufforschung e.V. (DZHK), partner site Munich Heart Alliance, Munich, Germany
- Institute of Epidemiology II, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - Elena Dolmatova
- Cardiovascular Research Center, Massachusetts General Hospital, Charlestown, MA
| | - Michiaki Kubo
- Laboratory for Genotyping Development, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Jonathan D. Smith
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH
- Department of Cellular & Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH
| | - Bruce M. Psaty
- Cardiovascular Health Research Unit, University of Washington, Seattle, WA
- Group Health Research Institute, Group Helath Cooperative, Seattle, WA
- Department of Epidemiology, University of Washington, Seattle, WA
- Department of Health Services, University of Washington, Seattle, WA
| | - Nicholas L. Smith
- Cardiovascular Health Research Unit, University of Washington, Seattle, WA
- Group Health Research Institute, Group Helath Cooperative, Seattle, WA
- Department of Epidemiology, University of Washington, Seattle, WA
- Epidemiologic Research and Information Center of the Department of Veterans Affairs Office of Research and Development, Seattle, WA
| | - J. Wouter Jukema
- Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
- Interuniversity Cardiology Institute of the Netherlands, Utrecht, The Netherlands
| | - Daniel I. Chasman
- Division of Preventive Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA
| | - Christine M. Albert
- Division of Preventive Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA
| | - Yusuke Ebana
- Department of Bio-Informational Pharmacology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tetsushi Furukawa
- Department of Bio-Informational Pharmacology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Peter MacFarlane
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, UK
| | - Tamara B. Harris
- Laboratory of Epidemiology, Demography, and Biometry, Intramural Research Program, National Institute on Aging, National Institutes of Health, Bethesda, MD
| | - Dawood Darbar
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN
| | - Marcus Dörr
- Department of Internal Medicine B, Ernst Moritz Arndt University Greifswald, Greifswald, Germany
| | - Anders G. Holst
- Danish National Research Foundation Centre for Cardiac Arrhythmia, Copenhagen, Denmark
- Laboratory for Molecular Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Jesper H. Svendsen
- Danish National Research Foundation Centre for Cardiac Arrhythmia, Copenhagen, Denmark
- Laboratory for Molecular Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Albert Hofman
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
- Netherlands Consortium for Healthy Aging (NCHA), Netherlands
| | - Andre G. Uitterlinden
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
- Netherlands Consortium for Healthy Aging (NCHA), Netherlands
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Vilmundur Gudnason
- Icelandic Heart Association Research Institute, Kopavogur, Iceland
- University of Iceland, Reykjavik, Iceland
| | - Mitsuaki Isobe
- Department of Cardiovascular Medicine, Tokyo Medical and Dental University, Japan
| | - Rainer Malik
- Institute for Stroke and Dementia Research, University Hospital Munich, Ludwig-Maximilians-University, Munich, Germany
| | - Martin Dichgans
- Institute for Stroke and Dementia Research, University Hospital Munich, Ludwig-Maximilians-University, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Jonathan Rosand
- Center for Human Genetic Research, Massachusetts General Hospital, Boston, MA
- Department of Neurology, Massachusetts General Hospital, Boston, MA
- Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, MA
| | - David R. Van Wagoner
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH
| | | | - Emelia J. Benjamin
- National Heart, Lung and Blood Institute’s and Boston University's Framingham Heart Study, Framingham, MA
- Cardiology Section, Department of Medicine, Boston University School of Medicine, Boston, MA
- Department of Epidemiology, Boston University School of Public Health, Boston, MA
- Preventive Medicine Section, Department of Medicine, Boston University School of Medicine, Boston, MA
| | - David J. Milan
- Cardiovascular Research Center, Massachusetts General Hospital, Charlestown, MA
- Cardiac Arrhythmia Service, Masschusetts General Hospital, Boston, MA
| | - Olle Melander
- Department of Clinical Sciences, Lund University, Malmo, Sweden
| | - Susan R. Heckbert
- Cardiovascular Health Research Unit, University of Washington, Seattle, WA
- Group Health Research Institute, Group Helath Cooperative, Seattle, WA
- Department of Epidemiology, University of Washington, Seattle, WA
| | - Ian Ford
- Robertson Centre for Biostatistics, University of Glasgow, Glasgow, UK
| | - Yongmei Liu
- Department of Epidemiology & Prevention, Public Health Sciences, Wake Forest School of Medicine, Winston Salem, NC
| | - John Barnard
- Department of Quantitative Health Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH
| | - Morten S. Olesen
- Danish National Research Foundation Centre for Cardiac Arrhythmia, Copenhagen, Denmark
- Laboratory for Molecular Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Bruno H.C. Stricker
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
- Netherlands Consortium for Healthy Aging (NCHA), Netherlands
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
- Inspectorate for Health Care, the Hague, The Netherlands
- Department of Medical Informatics, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Toshihiro Tanaka
- Laboratory for Cardiovascular Diseases, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
- Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Stefan Kääb
- Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Munich, Germany
- Deutsches Zentrum für Herz- Kreislaufforschung e.V. (DZHK), partner site Munich Heart Alliance, Munich, Germany
| | - Patrick T. Ellinor
- Cardiovascular Research Center, Massachusetts General Hospital, Charlestown, MA
- Cardiac Arrhythmia Service, Masschusetts General Hospital, Boston, MA
- Center for Human Genetic Research, Massachusetts General Hospital, Boston, MA
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36
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Roder K, Werdich AA, Li W, Liu M, Kim TY, Organ-Darling LE, Moshal KS, Hwang JM, Lu Y, Choi BR, MacRae CA, Koren G. RING finger protein RNF207, a novel regulator of cardiac excitation. J Biol Chem 2014; 289:33730-40. [PMID: 25281747 DOI: 10.1074/jbc.m114.592295] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Two recent studies (Newton-Cheh, C. et al. (2009) Common variants at ten loci influence QT interval duration in the QTGEN Study. Nat. Genet. 41, 399-406 and Pfeufer, A. et al. (2009) Common variants at ten loci modulate the QT interval duration in the QTSCD Study. Nat. Genet. 41, 407-414) identified an association, with genome-wide significance, between a single nucleotide polymorphism within the gene encoding RING finger protein 207 (RNF207) and the QT interval. We sought to determine the role of RNF207 in cardiac electrophysiology. Morpholino knockdown of RNF207 in zebrafish embryos resulted in action potential duration prolongation, occasionally a 2:1 atrioventricular block, and slowing of conduction velocity. Conversely, neonatal rabbit cardiomyocytes infected with RNF207-expressing adenovirus exhibited shortened action potential duration. Using transfections of U-2 OS and HEK293 cells, Western blot analysis and immunocytochemistry data demonstrate that RNF207 and the human ether-a-go-go-related gene (HERG) potassium channel interact and colocalize. Furthermore, RNF207 overexpression significantly elevated total and membrane HERG protein and HERG-encoded current density by ∼30-50%, which was dependent on the intact N-terminal RING domain of RNF207. Finally, coexpression of RNF207 and HSP70 increased HERG expression compared with HSP70 alone. This effect was dependent on the C terminus of RNF207. Taken together, the evidence is strong that RNF207 is an important regulator of action potential duration, likely via effects on HERG trafficking and localization in a heat shock protein-dependent manner.
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Affiliation(s)
- Karim Roder
- From the Cardiovascular Research Center, Division of Cardiology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School, Brown University, Providence, Rhode Island 02903
| | - Andreas A Werdich
- the Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, and
| | - Weiyan Li
- From the Cardiovascular Research Center, Division of Cardiology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School, Brown University, Providence, Rhode Island 02903
| | - Man Liu
- From the Cardiovascular Research Center, Division of Cardiology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School, Brown University, Providence, Rhode Island 02903
| | - Tae Yun Kim
- From the Cardiovascular Research Center, Division of Cardiology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School, Brown University, Providence, Rhode Island 02903
| | - Louise E Organ-Darling
- the Department of Biological Sciences, Wellesley College, Wellesley, Massachusetts 02481
| | - Karni S Moshal
- From the Cardiovascular Research Center, Division of Cardiology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School, Brown University, Providence, Rhode Island 02903
| | - Jung Min Hwang
- From the Cardiovascular Research Center, Division of Cardiology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School, Brown University, Providence, Rhode Island 02903
| | - Yichun Lu
- From the Cardiovascular Research Center, Division of Cardiology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School, Brown University, Providence, Rhode Island 02903
| | - Bum-Rak Choi
- From the Cardiovascular Research Center, Division of Cardiology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School, Brown University, Providence, Rhode Island 02903
| | - Calum A MacRae
- the Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, and
| | - Gideon Koren
- From the Cardiovascular Research Center, Division of Cardiology, Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School, Brown University, Providence, Rhode Island 02903,
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37
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Hou JH, Kralj JM, Douglass AD, Engert F, Cohen AE. Simultaneous mapping of membrane voltage and calcium in zebrafish heart in vivo reveals chamber-specific developmental transitions in ionic currents. Front Physiol 2014; 5:344. [PMID: 25309445 PMCID: PMC4161048 DOI: 10.3389/fphys.2014.00344] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 08/22/2014] [Indexed: 01/31/2023] Open
Abstract
The cardiac action potential (AP) and the consequent cytosolic Ca2+ transient are key indicators of cardiac function. Natural developmental processes, as well as many drugs and pathologies change the waveform, propagation, or variability (between cells or over time) of these parameters. Here we apply a genetically encoded dual-function calcium and voltage reporter (CaViar) to study the development of the zebrafish heart in vivo between 1.5 and 4 days post fertilization (dpf). We developed a high-sensitivity spinning disk confocal microscope and associated software for simultaneous three-dimensional optical mapping of voltage and calcium. We produced a transgenic zebrafish line expressing CaViar under control of the heart-specific cmlc2 promoter, and applied ion channel blockers at a series of developmental stages to map the maturation of the action potential in vivo. Early in development, the AP initiated via a calcium current through L-type calcium channels. Between 90 and 102 h post fertilization (hpf), the ventricular AP switched to a sodium-driven upswing, while the atrial AP remained calcium driven. In the adult zebrafish heart, a sodium current drives the AP in both the atrium and ventricle. Simultaneous voltage and calcium imaging with genetically encoded reporters provides a new approach for monitoring cardiac development, and the effects of drugs on cardiac function.
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Affiliation(s)
- Jennifer H Hou
- Department of Physics, Harvard University Cambridge, MA, USA
| | - Joel M Kralj
- Department of Chemistry and Chemical Biology, Harvard University Cambridge, MA, USA
| | - Adam D Douglass
- Department of Molecular and Cellular Biology, Harvard University Cambridge, MA, USA
| | - Florian Engert
- Department of Molecular and Cellular Biology, Harvard University Cambridge, MA, USA
| | - Adam E Cohen
- Department of Physics, Harvard University Cambridge, MA, USA ; Department of Chemistry and Chemical Biology, Harvard University Cambridge, MA, USA ; Howard Hughes Medical Institute Chevy Chase, MD, USA
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38
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Kordyukova MY, Polzikov MA, Shishova KV, Zatsepina OV. Analysis of protein partners of the human nucleolar protein SURF6 in HeLa cells by a GST pull-down assay. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2014. [DOI: 10.1134/s1068162014040062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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39
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Sojka S, Amin NM, Gibbs D, Christine KS, Charpentier MS, Conlon FL. Congenital heart disease protein 5 associates with CASZ1 to maintain myocardial tissue integrity. Development 2014; 141:3040-9. [PMID: 24993940 DOI: 10.1242/dev.106518] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The identification and characterization of the cellular and molecular pathways involved in the differentiation and morphogenesis of specific cell types of the developing heart are crucial to understanding the process of cardiac development and the pathology associated with human congenital heart disease. Here, we show that the cardiac transcription factor CASTOR (CASZ1) directly interacts with congenital heart disease 5 protein (CHD5), which is also known as tryptophan-rich basic protein (WRB), a gene located on chromosome 21 in the proposed region responsible for congenital heart disease in individuals with Down's syndrome. We demonstrate that loss of CHD5 in Xenopus leads to compromised myocardial integrity, improper deposition of basement membrane, and a resultant failure of hearts to undergo cell movements associated with cardiac formation. We further report that CHD5 is essential for CASZ1 function and that the CHD5-CASZ1 interaction is necessary for cardiac morphogenesis. Collectively, these results establish a role for CHD5 and CASZ1 in the early stages of vertebrate cardiac development.
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Affiliation(s)
- Stephen Sojka
- University of North Carolina McAllister Heart Institute, UNC-Chapel Hill, Chapel Hill, NC 27599-3280, USA Department of Biology, UNC-Chapel Hill, Chapel Hill, NC 27599-3280, USA
| | - Nirav M Amin
- University of North Carolina McAllister Heart Institute, UNC-Chapel Hill, Chapel Hill, NC 27599-3280, USA Department of Genetics, UNC-Chapel Hill, Chapel Hill, NC 27599-3280, USA
| | - Devin Gibbs
- Department of Biology, UNC-Chapel Hill, Chapel Hill, NC 27599-3280, USA
| | - Kathleen S Christine
- University of North Carolina McAllister Heart Institute, UNC-Chapel Hill, Chapel Hill, NC 27599-3280, USA Department of Biology, UNC-Chapel Hill, Chapel Hill, NC 27599-3280, USA
| | - Marta S Charpentier
- University of North Carolina McAllister Heart Institute, UNC-Chapel Hill, Chapel Hill, NC 27599-3280, USA Department of Genetics, UNC-Chapel Hill, Chapel Hill, NC 27599-3280, USA
| | - Frank L Conlon
- University of North Carolina McAllister Heart Institute, UNC-Chapel Hill, Chapel Hill, NC 27599-3280, USA Department of Biology, UNC-Chapel Hill, Chapel Hill, NC 27599-3280, USA Department of Genetics, UNC-Chapel Hill, Chapel Hill, NC 27599-3280, USA
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40
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Annotation of loci from genome-wide association studies using tissue-specific quantitative interaction proteomics. Nat Methods 2014; 11:868-74. [PMID: 24952909 PMCID: PMC4117722 DOI: 10.1038/nmeth.2997] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Accepted: 05/16/2014] [Indexed: 01/05/2023]
Abstract
Genome-wide association studies (GWAS) have identified thousands of loci associated wtih complex traits, but it is challenging to pinpoint causal genes in these loci and to exploit subtle association signals. We used tissue-specific quantitative interaction proteomics to map a network of five genes involved in the Mendelian disorder long QT syndrome (LQTS). We integrated the LQTS network with GWAS loci from the corresponding common complex trait, QT interval variation, to identify candidate genes that were subsequently confirmed in Xenopus laevis oocytes and zebrafish. We used the LQTS protein network to filter weak GWAS signals by identifying single nucleotide polymorphisms (SNPs) in proximity to genes in the network supported by strong proteomic evidence. Three SNPs passing this filter reached genome-wide significance after replication genotyping. Overall, we present a general strategy to propose candidates in GWAS loci for functional studies and to systematically filter subtle association signals using tissue-specific quantitative interaction proteomics.
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41
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Kapoor A, Sekar R, Hansen N, Fox-Talbot K, Morley M, Pihur V, Chatterjee S, Brandimarto J, Moravec C, Pulit S, Pfeufer A, Mullikin J, Ross M, Green E, Bentley D, Newton-Cheh C, Boerwinkle E, Tomaselli G, Cappola T, Arking D, Halushka M, Chakravarti A, Chakravarti A. An enhancer polymorphism at the cardiomyocyte intercalated disc protein NOS1AP locus is a major regulator of the QT interval. Am J Hum Genet 2014; 94:854-69. [PMID: 24857694 DOI: 10.1016/j.ajhg.2014.05.001] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 05/01/2014] [Indexed: 11/27/2022] Open
Abstract
QT interval variation is assumed to arise from variation in repolarization as evidenced from rare Na- and K-channel mutations in Mendelian QT prolongation syndromes. However, in the general population, common noncoding variants at a chromosome 1q locus are the most common genetic regulators of QT interval variation. In this study, we use multiple human genetic, molecular genetic, and cellular assays to identify a functional variant underlying trait association: a noncoding polymorphism (rs7539120) that maps within an enhancer of NOS1AP and affects cardiac function by increasing NOS1AP transcript expression. We further localized NOS1AP to cardiomyocyte intercalated discs (IDs) and demonstrate that overexpression of NOS1AP in cardiomyocytes leads to altered cellular electrophysiology. We advance the hypothesis that NOS1AP affects cardiac electrical conductance and coupling and thereby regulates the QT interval through propagation defects. As further evidence of an important role for propagation variation affecting QT interval in humans, we show that common polymorphisms mapping near a specific set of 170 genes encoding ID proteins are significantly enriched for association with the QT interval, as compared to genome-wide markers. These results suggest that focused studies of proteins within the cardiomyocyte ID are likely to provide insights into QT prolongation and its associated disorders.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Aravinda Chakravarti
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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42
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De Luca E, Zaccaria GM, Hadhoud M, Rizzo G, Ponzini R, Morbiducci U, Santoro MM. ZebraBeat: a flexible platform for the analysis of the cardiac rate in zebrafish embryos. Sci Rep 2014. [PMCID: PMC4790192 DOI: 10.1038/srep04898] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Heartbeat measurement is important in assesssing cardiac function because variations in heart rhythm can be the cause as well as an effect of hidden pathological heart conditions. Zebrafish (Danio rerio) has emerged as one of the most useful model organisms for cardiac research. Indeed, the zebrafish heart is easily accessible for optical analyses without conducting invasive procedures and shows anatomical similarity to the human heart. In this study, we present a non-invasive, simple, cost-effective process to quantify the heartbeat in embryonic zebrafish. To achieve reproducibility, high throughput and flexibility (i.e., adaptability to any existing confocal microscope system and with a user-friendly interface that can be easily used by researchers), we implemented this method within a software program. We show here that this platform, called ZebraBeat, can successfully detect heart rate variations in embryonic zebrafish at various developmental stages, and it can record cardiac rate fluctuations induced by factors such as temperature and genetic- and chemical-induced alterations. Applications of this methodology may include the screening of chemical libraries affecting heart rhythm and the identification of heart rhythm variations in mutants from large-scale forward genetic screens.
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43
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Aslibekyan S, Claas SA, Arnett DK. To replicate or not to replicate: the case of pharmacogenetic studies: Establishing validity of pharmacogenomic findings: from replication to triangulation. ACTA ACUST UNITED AC 2014; 6:409-12; discussion 412. [PMID: 23963160 DOI: 10.1161/circgenetics.112.000010] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Stella Aslibekyan
- Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, 55294-0022, USA
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44
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Treuer AV, Gonzalez DR. NOS1AP modulates intracellular Ca(2+) in cardiac myocytes and is up-regulated in dystrophic cardiomyopathy. INTERNATIONAL JOURNAL OF PHYSIOLOGY, PATHOPHYSIOLOGY AND PHARMACOLOGY 2014; 6:37-46. [PMID: 24665357 PMCID: PMC3961100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 01/15/2014] [Indexed: 06/03/2023]
Abstract
NOS1AP gene (nitric oxide synthase 1-adaptor protein) is strongly associated with abnormalities in the QT interval of the electrocardiogram and with sudden cardiac death. To determine the role of NOS1AP in the physiology of the cardiac myocyte, we assessed the impact of silencing NOS1AP, using siRNA, on [Ca(2+)]i transients in neonatal cardiomyocytes. In addition, we examined the co-localization of NOS1AP with cardiac ion channels, and finally, evaluated the expression of NOS1AP in a mouse model of dystrophic cardiomyopathy. Using siRNA, NOS1AP levels were reduced to ~30% of the control levels (p<0.05). NOS1AP silencing in cardiac myocytes reduced significantly the amplitude of electrically evoked calcium transients (p<0.05) and the degree of S-nitrosylation of the cells (p<0.05). Using confocal microscopy, we evaluated NOS1AP subcellular location and interactions with other proteins by co-localization analysis. NOS1AP showed a high degree of co-localization with the L-type calcium channel and the inwardly rectifying potassium channel Kir3.1, a low degree of co-localization with the ryanodine receptor (RyR2) and alfa-sarcomeric actin and no co-localization with connexin 43, suggesting functionally relevant interactions with the ion channels that regulate the action potential duration. Finally, using immunofluorescence and Western blotting, we observed that in mice with dystrophic cardiomyopathy, NOS1AP was significantly up-regulated (p<0.05). These results suggest for a role of NOS1AP on cardiac arrhythmias, acting on the L-type calcium channel, and potassium channels, probably through S-nitrosylation.
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Affiliation(s)
- Adriana V Treuer
- Programa Doctorado en Ciencias Mencion Investigacion y Desarrollo de Productos Bioactivos, Instituto de Química de Recursos Naturales, Universidad de TalcaTalca, Chile
| | - Daniel R Gonzalez
- Departamento de Ciencias Basicas Biomedicas, Facultad de Ciencias de la Salud, Universidad de TalcaTalca, Chile
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45
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Auer DR, Sysa-Shah P, Bedja D, Simmers JL, Pak E, Dutra A, Cohn R, Gabrielson KL, Chakravarti A, Kapoor A. Generation of a cre recombinase-conditional Nos1ap over-expression transgenic mouse. Biotechnol Lett 2014; 36:1179-85. [PMID: 24563304 DOI: 10.1007/s10529-014-1473-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Accepted: 01/09/2014] [Indexed: 10/25/2022]
Abstract
Polymorphic non-coding variants at the NOS1AP locus have been associated with the common cardiac, metabolic and neurological traits and diseases. Although, in vitro gene targeting-based cellular and biochemical studies have shed some light on NOS1AP function in cardiac and neuronal tissue, to enhance our understanding of NOS1AP function in mammalian physiology and disease, we report the generation of cre recombinase-conditional Nos1ap over-expression transgenic mice (Nos1ap (Tg)). Conditional transgenic mice were generated by the pronuclear injection method and three independent, single-site, multiple copies integration event-based founder lines were selected. For heart-restricted over-expression, Nos1ap (Tg) mice were crossed with Mlc2v-cre and Nos1ap transcript over-expression was observed in left ventricles from Nos1ap (Tg); Mlc2v-cre F1 mice. We believe that with the potential of conditional over-expression, Nos1ap (Tg) mice will be a useful resource in studying NOS1AP function in various tissues under physiological and disease states.
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Affiliation(s)
- Dallas R Auer
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, 733 N. Broadway, Baltimore, MD, 21205, USA,
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46
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Wilkinson RN, Jopling C, van Eeden FJM. Zebrafish as a model of cardiac disease. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2014; 124:65-91. [PMID: 24751427 DOI: 10.1016/b978-0-12-386930-2.00004-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The zebrafish has been rapidly adopted as a model for cardiac development and disease. The transparency of the embryo, its limited requirement for active oxygen delivery, and ease of use in genetic manipulations and chemical exposure have made it a powerful alternative to rodents. Novel technologies like TALEN/CRISPR-mediated genome engineering and advanced imaging methods will only accelerate its use. Here, we give an overview of heart development and function in the fish and highlight a number of areas where it is most actively contributing to the understanding of cardiac development and disease. We also review the current state of research on a feature that we only could wish to be conserved between fish and human; cardiac regeneration.
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Affiliation(s)
- Robert N Wilkinson
- Department of Cardiovascular Science, Medical School, University of Sheffield, Sheffield, United Kingdom
| | - Chris Jopling
- CNRS, UMR-5203, Institut de Génomique Fonctionnelle, Département de Physiologie, Labex Ion Channel Science and Therapeutics, Montpellier, France; INSERM, U661, Montpellier, France; Universités de Montpellier 1&2, UMR-5203, Montpellier, France
| | - Fredericus J M van Eeden
- MRC Centre for Biomedical Genetics, Department of Biomedical Science, University of Sheffield, Sheffield, United Kingdom
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47
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Karnes JH, Van Driest S, Bowton EA, Weeke PE, Mosley JD, Peterson JF, Denny JC, Roden DM. Using systems approaches to address challenges for clinical implementation of pharmacogenomics. WILEY INTERDISCIPLINARY REVIEWS-SYSTEMS BIOLOGY AND MEDICINE 2013; 6:125-35. [PMID: 24319008 DOI: 10.1002/wsbm.1255] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 10/17/2013] [Accepted: 11/04/2013] [Indexed: 01/07/2023]
Abstract
Many genetic variants have been shown to affect drug response through changes in drug efficacy and likelihood of adverse effects. Much of pharmacogenomic science has focused on discovering and clinically implementing single gene variants with large effect sizes. Given the increasing complexities of drug responses and their variability, a systems approach may be enabling for discovery of new biology in this area. Further, systems approaches may be useful in addressing challenges in moving these data to clinical implementation, including creation of predictive models of drug response phenotypes, improved clinical decision-making through complex biological models, improving strategies for integrating genomics into clinical practice, and evaluating the impact of implementation programs on public health.
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Affiliation(s)
- Jason H Karnes
- Department of Medicine, Vanderbilt University, Nashville, TN, USA
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48
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Poon KL, Brand T. The zebrafish model system in cardiovascular research: A tiny fish with mighty prospects. Glob Cardiol Sci Pract 2013; 2013:9-28. [PMID: 24688998 PMCID: PMC3963735 DOI: 10.5339/gcsp.2013.4] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Accepted: 01/29/2013] [Indexed: 12/26/2022] Open
Affiliation(s)
- Kar Lai Poon
- Harefield Heart Science Centre, National Heart and Lung Institute, Imperial College London, Hill End Road, Harefield, Middlesex, UB9 6JH, United Kingdom
| | - Thomas Brand
- Harefield Heart Science Centre, National Heart and Lung Institute, Imperial College London, Hill End Road, Harefield, Middlesex, UB9 6JH, United Kingdom
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49
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The Lambeth Conventions (II): Guidelines for the study of animal and human ventricular and supraventricular arrhythmias. Pharmacol Ther 2013; 139:213-48. [DOI: 10.1016/j.pharmthera.2013.04.008] [Citation(s) in RCA: 208] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Accepted: 04/01/2013] [Indexed: 12/17/2022]
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50
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Dhillon SS, Dóró É, Magyary I, Egginton S, Sík A, Müller F. Optimisation of embryonic and larval ECG measurement in zebrafish for quantifying the effect of QT prolonging drugs. PLoS One 2013; 8:e60552. [PMID: 23579446 PMCID: PMC3620317 DOI: 10.1371/journal.pone.0060552] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Accepted: 02/28/2013] [Indexed: 02/04/2023] Open
Abstract
Effective chemical compound toxicity screening is of paramount importance for safe cardiac drug development. Using mammals in preliminary screening for detection of cardiac dysfunction by electrocardiography (ECG) is costly and requires a large number of animals. Alternatively, zebrafish embryos can be used as the ECG waveform is similar to mammals, a minimal amount of chemical is necessary for drug testing, while embryos are abundant, inexpensive and represent replacement in animal research with reduced bioethical concerns. We demonstrate here the utility of pre-feeding stage zebrafish larvae in detection of cardiac dysfunction by electrocardiography. We have optimised an ECG recording system by addressing key parameters such as the form of immobilization, recording temperature, electrode positioning and developmental age. Furthermore, analysis of 3 days post fertilization (dpf) zebrafish embryos treated with known QT prolonging drugs such as terfenadine, verapamil and haloperidol led to reproducible detection of QT prolongation as previously shown for adult zebrafish. In addition, calculation of Z-factor scores revealed that the assay was sensitive and specific enough to detect large drug-induced changes in QTc intervals. Thus, the ECG recording system is a useful drug-screening tool to detect alteration to cardiac cycle components and secondary effects such as heart block and arrhythmias in zebrafish larvae before free feeding stage, and thus provides a suitable replacement for mammalian experimentation.
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Affiliation(s)
- Sundeep Singh Dhillon
- School of Clinical and Experimental Medicine, University of Birmingham, Birmingham, United Kingdom
- Department of Nature Protection, University of Kaposvar, Kaposvar, Hungary
| | - Éva Dóró
- School of Clinical and Experimental Medicine, University of Birmingham, Birmingham, United Kingdom
| | - István Magyary
- Department of Nature Protection, University of Kaposvar, Kaposvar, Hungary
| | - Stuart Egginton
- School of Clinical and Experimental Medicine, University of Birmingham, Birmingham, United Kingdom
- School of Biomedical Sciences, University of Leeds, Leeds, United Kingdom
| | - Attila Sík
- School of Clinical and Experimental Medicine, University of Birmingham, Birmingham, United Kingdom
| | - Ferenc Müller
- School of Clinical and Experimental Medicine, University of Birmingham, Birmingham, United Kingdom
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