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Wang Y, Starovoytov A, Murad AM, Hunker KL, Brunham LR, Li JZ, Saw J, Ganesh SK. Burden of Rare Genetic Variants in Spontaneous Coronary Artery Dissection With High-risk Features. JAMA Cardiol 2022; 7:1045-1055. [PMID: 36103205 PMCID: PMC9475437 DOI: 10.1001/jamacardio.2022.2970] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 06/24/2022] [Indexed: 07/28/2023]
Abstract
Importance The emerging genetic basis of spontaneous coronary artery dissection (SCAD) has been defined as both partially complex and monogenic in some patients, involving variants predominantly in genes known to underlie vascular connective tissue diseases (CTDs). The effect of these genetic influences has not been defined in high-risk SCAD phenotypes, and the identification of a high-risk subgroup of individuals may help to guide clinical genetic evaluations of SCAD. Objective To identify and quantify the burden of rare genetic variation in individuals with SCAD with high-risk clinical features. Design, Setting, and Participants Whole-exome sequencing (WES) was performed for subsequent case-control association analyses and individual variant annotation among individuals with high-risk SCAD. Genetic variants were annotated for pathogenicity by in-silico analysis of genes previously defined by sequencing for vascular CTDs and/or SCAD, as well as genes prioritized by genome-wide association study (GWAS) and colocalization of arterial expression quantitative trait loci. Unbiased genome-wide association analysis of the WES data was performed by comparing aggregated variants in individuals with SCAD to healthy matched controls or the Genome Aggregation Database (gnomAD). This study was conducted at a tertiary care center. Individuals in the Canadian SCAD Registry genetics study with a high-risk SCAD phenotype were selected and defined as peripartum SCAD, recurrent SCAD, or SCAD in an individual with family history of arteriopathy. Main Outcomes and Measures Burden of genetic variants defined by DNA sequencing in individuals with high-risk SCAD. Results This study included a total of 336 participants (mean [SD] age, 53.0 [9.5] years; 301 female participants [90%]). Variants in vascular CTD genes were identified in 17.0% of individuals (16 of 94) with high-risk SCAD and were enriched (OR, 2.6; 95% CI, 1.6-4.2; P = 7.8 × 10-4) as compared with gnomAD, with leading significant signals in COL3A1 (OR, 13.4; 95% CI, 4.9-36.2; P = 2.8 × 10-4) and Loeys-Dietz syndrome genes (OR, 7.9; 95% CI, 2.9-21.2; P = 2.0 × 10-3). Variants in GWAS-prioritized genes, observed in 6.4% of individuals (6 of 94) with high-risk SCAD, were also enriched (OR, 3.6; 95% CI, 1.6-8.2; P = 7.4 × 10-3). Variants annotated as likely pathogenic or pathogenic occurred in 4 individuals, in the COL3A1, TGFBR2, and ADAMTSL4 genes. Genome-wide aggregated variant testing identified novel associations with peripartum SCAD. Conclusions and Relevance In this genetic study, approximately 1 in 5 individuals with a high-risk SCAD phenotype harbored a rare genetic variant in genes currently implicated for SCAD. Genetic screening in this subgroup of individuals presenting with SCAD may be considered.
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Affiliation(s)
- Yu Wang
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor
| | - Andrew Starovoytov
- Division of Cardiology, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Andrea M. Murad
- Division of Genetic Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor
| | - Kristina L. Hunker
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor
| | - Liam R. Brunham
- Division of Cardiology, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada
- Centre for Heart Lung Innovation, Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jun Z. Li
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor
| | - Jacqueline Saw
- Division of Cardiology, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Santhi K. Ganesh
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor
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2
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Kumar N, Zuo Y, Yalavarthi S, Hunker KL, Knight JS, Kanthi Y, Obi AT, Ganesh SK. SARS-CoV-2 Spike Protein S1-Mediated Endothelial Injury and Pro-Inflammatory State Is Amplified by Dihydrotestosterone and Prevented by Mineralocorticoid Antagonism. Viruses 2021; 13:2209. [PMID: 34835015 PMCID: PMC8617813 DOI: 10.3390/v13112209] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/29/2021] [Accepted: 10/31/2021] [Indexed: 12/13/2022] Open
Abstract
Men are disproportionately affected by the coronavirus disease-2019 (COVID-19), and face higher odds of severe illness and death compared to women. The vascular effects of androgen signaling and inflammatory cytokines in severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2)-mediated endothelial injury are not defined. We determined the effects of SARS-CoV-2 spike protein-mediated endothelial injury under conditions of exposure to androgen dihydrotestosterone (DHT) and tumor necrosis factor-a (TNF-α) and tested potentially therapeutic effects of mineralocorticoid receptor antagonism by spironolactone. Circulating endothelial injury markers VCAM-1 and E-selectin were measured in men and women diagnosed with COVID-19. Exposure of endothelial cells (ECs) in vitro to DHT exacerbated spike protein S1-mediated endothelial injury transcripts for the cell adhesion molecules E-selectin, VCAM-1 and ICAM-1 and anti-fibrinolytic PAI-1 (p < 0.05), and increased THP-1 monocyte adhesion to ECs (p = 0.032). Spironolactone dramatically reduced DHT+S1-induced endothelial activation. TNF-α exacerbated S1-induced EC activation, which was abrogated by pretreatment with spironolactone. Analysis from patients hospitalized with COVID-19 showed concordant higher circulating VCAM-1 and E-Selectin levels in men, compared to women. A beneficial effect of the FDA-approved drug spironolactone was observed on endothelial cells in vitro, supporting a rationale for further evaluation of mineralocorticoid antagonism as an adjunct treatment in COVID-19.
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Affiliation(s)
- Nitin Kumar
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, MI 48109, USA; (N.K.); (K.L.H.); (Y.K.)
- Department of Human Genetics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Yu Zuo
- Department of Internal Medicine, Division of Rheumatology, University of Michigan, Ann Arbor, MI 48109, USA; (Y.Z.); (S.Y.); (J.S.K.)
| | - Srilakshmi Yalavarthi
- Department of Internal Medicine, Division of Rheumatology, University of Michigan, Ann Arbor, MI 48109, USA; (Y.Z.); (S.Y.); (J.S.K.)
| | - Kristina L. Hunker
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, MI 48109, USA; (N.K.); (K.L.H.); (Y.K.)
- Department of Human Genetics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Jason S. Knight
- Department of Internal Medicine, Division of Rheumatology, University of Michigan, Ann Arbor, MI 48109, USA; (Y.Z.); (S.Y.); (J.S.K.)
| | - Yogendra Kanthi
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, MI 48109, USA; (N.K.); (K.L.H.); (Y.K.)
- National Heart, Lung and Blood Institute, Bethesda, MD 20892, USA
| | - Andrea T. Obi
- Section of Vascular Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI 48109, USA;
| | - Santhi K. Ganesh
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, MI 48109, USA; (N.K.); (K.L.H.); (Y.K.)
- Department of Human Genetics, University of Michigan, Ann Arbor, MI 48109, USA
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3
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Sun P, Kumar N, Tin A, Zhao J, Brown MR, Lin Z, Yang ML, Zheng Q, Jia J, Bielak LF, Yu B, Boerwinkle E, Hunker KL, Coresh J, Chen YE, Huo Y, Kardia SL, Khoriaty R, Zhou X, Morrison AC, Zhang Y, Ganesh SK. Epidemiologic and Genetic Associations of Erythropoietin With Blood Pressure, Hypertension, and Coronary Artery Disease. Hypertension 2021; 78:1555-1566. [PMID: 34488438 PMCID: PMC8516734 DOI: 10.1161/hypertensionaha.121.17597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Pengfei Sun
- Department of cardiology, Peking University First hospital, Beijing, 100034, China
| | - Nitin Kumar
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Adrienne Tin
- Johns Hopkins Bloomberg School of Public Health, MD, 21205, USA
- University of Mississippi Medical Center, MS, 38677, USA
| | - Jing Zhao
- Department of cardiology, Peking University First hospital, Beijing, 100034, China
| | - Michael R Brown
- Human Genetics Center, Department of Epidemiology, Human Genetics & Environmental Sciences, School of Public Health, University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
| | - Zesen Lin
- Department of Pharmacology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Min-Lee Yang
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Qiwen Zheng
- Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Jia Jia
- Department of cardiology, Peking University First hospital, Beijing, 100034, China
| | - Lawrence F Bielak
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Bing Yu
- Human Genetics Center, Department of Epidemiology, Human Genetics & Environmental Sciences, School of Public Health, University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
| | - Eric Boerwinkle
- Human Genetics Center, Department of Epidemiology, Human Genetics & Environmental Sciences, School of Public Health, University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
| | - Kristina L. Hunker
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Josef Coresh
- Johns Hopkins Bloomberg School of Public Health, MD, 21205, USA
| | - Y. Eugene Chen
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Yong Huo
- Department of cardiology, Peking University First hospital, Beijing, 100034, China
| | - Sharon L.R. Kardia
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Rami Khoriaty
- Division of Hematology, Department of Internal Medicine and Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Xiang Zhou
- Department of Biostatistics and Center for Statistical Genetics, University of Michigan School of Public Health, Ann Arbor, MI, 48109, USA
| | - Alanna C. Morrison
- Human Genetics Center, Department of Epidemiology, Human Genetics & Environmental Sciences, School of Public Health, University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
| | - Yan Zhang
- Department of cardiology, Peking University First hospital, Beijing, 100034, China
- Institute of Cardiovascular Disease, Peking University First Hospital, Beijing, 100034, China
| | - Santhi K. Ganesh
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
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4
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Georges A, Yang ML, Berrandou TE, Bakker MK, Dikilitas O, Kiando SR, Ma L, Satterfield BA, Sengupta S, Yu M, Deleuze JF, Dupré D, Hunker KL, Kyryachenko S, Liu L, Sayoud-Sadeg I, Amar L, Brummett CM, Coleman DM, d’Escamard V, de Leeuw P, Fendrikova-Mahlay N, Kadian-Dodov D, Li JZ, Lorthioir A, Pappaccogli M, Prejbisz A, Smigielski W, Stanley JC, Zawistowski M, Zhou X, Zöllner S, Amouyel P, De Buyzere ML, Debette S, Dobrowolski P, Drygas W, Gornik HL, Olin JW, Piwonski J, Rietzschel ER, Ruigrok YM, Vikkula M, Warchol Celinska E, Januszewicz A, Kullo IJ, Azizi M, Jeunemaitre X, Persu A, Kovacic JC, Ganesh SK, Bouatia-Naji N. Genetic investigation of fibromuscular dysplasia identifies risk loci and shared genetics with common cardiovascular diseases. Nat Commun 2021; 12:6031. [PMID: 34654805 PMCID: PMC8521585 DOI: 10.1038/s41467-021-26174-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 09/17/2021] [Indexed: 12/23/2022] Open
Abstract
Fibromuscular dysplasia (FMD) is an arteriopathy associated with hypertension, stroke and myocardial infarction, affecting mostly women. We report results from the first genome-wide association meta-analysis of six studies including 1556 FMD cases and 7100 controls. We find an estimate of SNP-based heritability compatible with FMD having a polygenic basis, and report four robustly associated loci (PHACTR1, LRP1, ATP2B1, and LIMA1). Transcriptome-wide association analysis in arteries identifies one additional locus (SLC24A3). We characterize open chromatin in arterial primary cells and find that FMD associated variants are located in arterial-specific regulatory elements. Target genes are broadly involved in mechanisms related to actin cytoskeleton and intracellular calcium homeostasis, central to vascular contraction. We find significant genetic overlap between FMD and more common cardiovascular diseases and traits including blood pressure, migraine, intracranial aneurysm, and coronary artery disease.
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Affiliation(s)
- Adrien Georges
- grid.508487.60000 0004 7885 7602PARCC, INSERM, Université de Paris, F-750015 Paris, France
| | - Min-Lee Yang
- grid.214458.e0000000086837370Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI USA ,grid.214458.e0000000086837370Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI USA
| | - Takiy-Eddine Berrandou
- grid.508487.60000 0004 7885 7602PARCC, INSERM, Université de Paris, F-750015 Paris, France
| | - Mark K. Bakker
- grid.5477.10000000120346234Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, The Netherlands
| | - Ozan Dikilitas
- grid.66875.3a0000 0004 0459 167XDepartment of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902 USA
| | - Soto Romuald Kiando
- grid.508487.60000 0004 7885 7602PARCC, INSERM, Université de Paris, F-750015 Paris, France
| | - Lijiang Ma
- grid.59734.3c0000 0001 0670 2351Icahn Institute for Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - Benjamin A. Satterfield
- grid.66875.3a0000 0004 0459 167XDepartment of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902 USA
| | - Sebanti Sengupta
- grid.214458.e0000000086837370Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI USA
| | - Mengyao Yu
- grid.508487.60000 0004 7885 7602PARCC, INSERM, Université de Paris, F-750015 Paris, France
| | - Jean-François Deleuze
- grid.418135.a0000 0004 0641 3404Centre National de Recherche en Génomique Humaine, Institut de Génomique, CEA and Fondation Jean Dausset-CEPH, Evry, France
| | - Delia Dupré
- grid.508487.60000 0004 7885 7602PARCC, INSERM, Université de Paris, F-750015 Paris, France
| | - Kristina L. Hunker
- grid.214458.e0000000086837370Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI USA ,grid.214458.e0000000086837370Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI USA
| | - Sergiy Kyryachenko
- grid.508487.60000 0004 7885 7602PARCC, INSERM, Université de Paris, F-750015 Paris, France
| | - Lu Liu
- grid.508487.60000 0004 7885 7602PARCC, INSERM, Université de Paris, F-750015 Paris, France
| | - Ines Sayoud-Sadeg
- grid.508487.60000 0004 7885 7602PARCC, INSERM, Université de Paris, F-750015 Paris, France
| | - Laurence Amar
- grid.508487.60000 0004 7885 7602PARCC, INSERM, Université de Paris, F-750015 Paris, France ,grid.414093.b0000 0001 2183 5849Hypertension Unit, Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015 Paris, France
| | - Chad M. Brummett
- grid.214458.e0000000086837370Department of Anesthesiology, Michigan Medicine, University of Michigan, Ann Arbor, MI USA
| | - Dawn M. Coleman
- grid.214458.e0000000086837370Vascular Surgery Section, Department of Surgery, Michigan Medicine, University of Michigan, Ann Arbor, MI 48109 USA
| | - Valentina d’Escamard
- grid.59734.3c0000 0001 0670 2351Cardiovascular Institute, Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - Peter de Leeuw
- grid.412966.e0000 0004 0480 1382Department of Internal Medicine, Division of General Internal Medicine, Section Vascular Medicine, Maastricht University Medical Centre, Maastricht University, Maastricht, the Netherlands ,grid.5012.60000 0001 0481 6099CARIM School for Cardiovascular Diseases, Maastricht University Medical Centre, Maastricht University, Maastricht, the Netherlands
| | - Natalia Fendrikova-Mahlay
- grid.239578.20000 0001 0675 4725Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH 44195 USA
| | - Daniella Kadian-Dodov
- grid.59734.3c0000 0001 0670 2351Zena and Michael A. Wiener Cardiovascular Institute and Marie-Josée and Henry R, Kravis Center for Cardiovascular Health Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - Jun Z. Li
- grid.214458.e0000000086837370Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI USA
| | - Aurélien Lorthioir
- grid.508487.60000 0004 7885 7602PARCC, INSERM, Université de Paris, F-750015 Paris, France ,grid.414093.b0000 0001 2183 5849Hypertension Unit, Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015 Paris, France
| | - Marco Pappaccogli
- grid.7942.80000 0001 2294 713XDivision of Cardiology, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, 1200 Brussels, Belgium ,grid.7605.40000 0001 2336 6580Division of Internal Medicine and Hypertension Unit, Department of Medical Sciences, University of Turin, Turin, Italy
| | - Aleksander Prejbisz
- grid.418887.aDepartment of Hypertension, National Institute of Cardiology, Warsaw, Poland
| | - Witold Smigielski
- grid.10789.370000 0000 9730 2769Department of Demography, University of Lodz, Lodz, Poland
| | - James C. Stanley
- grid.214458.e0000000086837370Vascular Surgery Section, Department of Surgery, Michigan Medicine, University of Michigan, Ann Arbor, MI 48109 USA
| | - Matthew Zawistowski
- grid.214458.e0000000086837370Department of Biostatistics and Center for Statistical Genetics, University of Michigan School of Public Health, Ann Arbor, MI USA
| | - Xiang Zhou
- grid.214458.e0000000086837370Department of Biostatistics and Center for Statistical Genetics, University of Michigan School of Public Health, Ann Arbor, MI USA
| | - Sebastian Zöllner
- grid.214458.e0000000086837370Department of Biostatistics and Center for Statistical Genetics, University of Michigan School of Public Health, Ann Arbor, MI USA
| | | | | | | | - Philippe Amouyel
- grid.503422.20000 0001 2242 6780Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Labex DISTALZ - Risk factors and molecular determinants of aging-related disease, F-59000 Lille, France
| | - Marc L. De Buyzere
- grid.5342.00000 0001 2069 7798Department of Cardiovascular Diseases, Ghent University and Ghent University Hospital, Ghent, Belgium
| | - Stéphanie Debette
- grid.42399.350000 0004 0593 7118Department of Neurology, Bordeaux University Hospital, Inserm U1219, Bordeaux, France
| | - Piotr Dobrowolski
- grid.418887.aDepartment of Hypertension, National Institute of Cardiology, Warsaw, Poland
| | - Wojciech Drygas
- grid.418887.aDepartment of Epidemiology, Cardiovascular Disease Prevention, and Health Promotion, National Institute of Cardiology, Warsaw, Poland
| | - Heather L. Gornik
- grid.239578.20000 0001 0675 4725Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH 44195 USA
| | - Jeffrey W. Olin
- grid.59734.3c0000 0001 0670 2351Zena and Michael A. Wiener Cardiovascular Institute and Marie-Josée and Henry R, Kravis Center for Cardiovascular Health Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - Jerzy Piwonski
- grid.418887.aDepartment of Epidemiology, Cardiovascular Disease Prevention, and Health Promotion, National Institute of Cardiology, Warsaw, Poland
| | - Ernst R. Rietzschel
- grid.5342.00000 0001 2069 7798Department of Cardiovascular Diseases, Ghent University and Ghent University Hospital, Ghent, Belgium
| | - Ynte M. Ruigrok
- grid.66875.3a0000 0004 0459 167XDepartment of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902 USA
| | - Miikka Vikkula
- grid.7942.80000 0001 2294 713XHuman Molecular Genetics, de Duve Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Ewa Warchol Celinska
- grid.418887.aDepartment of Hypertension, National Institute of Cardiology, Warsaw, Poland
| | - Andrzej Januszewicz
- grid.418887.aDepartment of Hypertension, National Institute of Cardiology, Warsaw, Poland
| | - Iftikhar J. Kullo
- grid.66875.3a0000 0004 0459 167XDepartment of Cardiovascular Medicine, Mayo Clinic, Rochester, MN 55902 USA ,grid.66875.3a0000 0004 0459 167XGonda Vascular Center, Mayo Clinic, Rochester, MN 55902 USA
| | - Michel Azizi
- grid.414093.b0000 0001 2183 5849Hypertension Unit, Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015 Paris, France ,grid.512950.aUniversité de Paris, Inserm, Centre d’Investigation Clinique 1418, F-75006 Paris, France
| | | | - Xavier Jeunemaitre
- grid.508487.60000 0004 7885 7602PARCC, INSERM, Université de Paris, F-750015 Paris, France ,grid.414093.b0000 0001 2183 5849Department of Genetics, Assistance-Publiques-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015 Paris, France
| | - Alexandre Persu
- grid.7942.80000 0001 2294 713XDivision of Cardiology, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, 1200 Brussels, Belgium ,grid.7942.80000 0001 2294 713XPole of Cardiovascular Research, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Jason C. Kovacic
- grid.59734.3c0000 0001 0670 2351Zena and Michael A. Wiener Cardiovascular Institute and Marie-Josée and Henry R, Kravis Center for Cardiovascular Health Icahn School of Medicine at Mount Sinai, New York, NY USA ,grid.1057.30000 0000 9472 3971Victor Chang Cardiac Research Institute, Darlinghurst, NSW Australia ,grid.1005.40000 0004 4902 0432St. Vincent’s Clinical School, University of New South Wales, Sydney, NSW Australia
| | - Santhi K. Ganesh
- grid.214458.e0000000086837370Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI USA ,grid.214458.e0000000086837370Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI USA
| | - Nabila Bouatia-Naji
- grid.508487.60000 0004 7885 7602PARCC, INSERM, Université de Paris, F-750015 Paris, France
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5
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Coleman DM, Wang Y, Yang ML, Hunker KL, Birt I, Bergin IL, Li JZ, Stanley JC, Ganesh SK. Molecular genetic evaluation of Pediatric Renovascular hypertension due to renal artery stenosis and abdominal aortic Coarctation in Neurofibromatosis type 1. Hum Mol Genet 2021; 31:334-346. [PMID: 34476477 DOI: 10.1093/hmg/ddab241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 12/30/2022] Open
Abstract
The etiology of renal artery stenosis (RAS) and abdominal aortic coarctation (AAC) causing the midaortic syndrome (MAS), often resulting in renovascular hypertension (RVH), remains ill-defined. Neurofibromatosis type 1 (NF-1) is frequently observed in children with RVH. Consecutive pediatric patients (N = 102) presenting with RVH secondary to RAS with and without concurrent AAC were prospectively enrolled in a clinical data base, and blood, saliva, and operative tissue when available, were collected. Among the 102 children were 13 having a concurrent clinical diagnosis of NF-1 (12.5%). Whole exome sequencing was performed for germline variant detection and RNASeq analysis of NF1, MAPK pathway genes, and MCP1 levels were undertaken in five NF-1 stenotic renal arteries, as well as control renal and mesenteric arteries from children with no known vasculopathy or NF-1. In 11 unrelated children with sequencing data, 11 NF1 genetic variants were identified, of which 10 had not been reported in gnomAD. Histologic analysis of NF-1 RAS specimens consistently revealed intimal thickening, disruption of the internal elastic lamina, and medial thinning. Analysis of transcript expression in arterial lesions documented an approximately 5-fold reduction in NF1 expression, confirming heterozygosity, MAPK pathway activation, and increased MCP1 expression. In summary, NF-1 related RVH in children is rare but often severe and progressive and as such, important to recognize. It is associated with histologic and molecular features consistent with an aggressive adverse vascular remodeling process. Further research is necessary to define the mechanisms underlying these findings.
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Affiliation(s)
- Dawn M Coleman
- Vascular Surgery Section, Department of Surgery, Michigan Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Yu Wang
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.,Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Min-Lee Yang
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.,Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Kristina L Hunker
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.,Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Isabelle Birt
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.,Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Ingrid L Bergin
- Unit for Laboratory Animal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Jun Z Li
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
| | - James C Stanley
- Vascular Surgery Section, Department of Surgery, Michigan Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Santhi K Ganesh
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.,Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
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6
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Grunwald H, Hunker KL, Birt I, Aviram R, Zaffryar-Eilot S, Ganesh SK, Hasson P. Lysyl oxidase interactions with transforming growth factor-β during angiogenesis are mediated by endothelin 1. FASEB J 2021; 35:e21824. [PMID: 34370353 DOI: 10.1096/fj.202001860rr] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 07/12/2021] [Accepted: 07/15/2021] [Indexed: 11/11/2022]
Abstract
Crosstalk between multiple components underlies the formation of mature vessels. Although the players involved in angiogenesis have been identified, mechanisms underlying the crosstalk between them are still unclear. Using the ex vivo aortic ring assay, we set out to dissect the interactions between two key angiogenic signaling pathways, vascular endothelial growth factor (VEGF) and transforming growth factor β (TGFβ), with members of the lysyl oxidase (LOX) family of matrix modifying enzymes. We find an interplay between VEGF, TGFβ, and the LOXs is essential for the formation of mature vascular smooth muscle cells (vSMC)-coated vessels. RNA sequencing analysis further identified an interaction with the endothelin-1 pathway. Our work implicates endothelin-1 downstream of TGFβ in vascular maturation and demonstrate the complexity of processes involved in generating vSMC-coated vessels.
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Affiliation(s)
- Hagar Grunwald
- Department of Genetics and Developmental Biology, The Rappaport Faculty of Medicine and Research Institute, Technion - Israel Institute of Technology, Haifa, Israel
| | - Kristina L Hunker
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Isabelle Birt
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Rohtem Aviram
- Department of Genetics and Developmental Biology, The Rappaport Faculty of Medicine and Research Institute, Technion - Israel Institute of Technology, Haifa, Israel
| | - Shelly Zaffryar-Eilot
- Department of Genetics and Developmental Biology, The Rappaport Faculty of Medicine and Research Institute, Technion - Israel Institute of Technology, Haifa, Israel
| | - Santhi K Ganesh
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.,Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Peleg Hasson
- Department of Genetics and Developmental Biology, The Rappaport Faculty of Medicine and Research Institute, Technion - Israel Institute of Technology, Haifa, Israel
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7
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Richer J, Hill HL, Wang Y, Yang ML, Hunker KL, Lane J, Blackburn S, Coleman DM, Eliason J, Sillon G, D’Agostino MD, Jetty P, Mongeon FP, Laberge AM, Ryan SE, Fendrikova-Mahlay N, Coutinho T, Mathis MR, Zawistowski M, Hazen SL, Katz AE, Gornik HL, Brummett CM, Abecasis G, Bergin IL, Stanley JC, Li JZ, Ganesh SK. A Novel Recurrent COL5A1 Genetic Variant Is Associated With a Dysplasia-Associated Arterial Disease Exhibiting Dissections and Fibromuscular Dysplasia. Arterioscler Thromb Vasc Biol 2020; 40:2686-2699. [PMID: 32938213 PMCID: PMC7953329 DOI: 10.1161/atvbaha.119.313885] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE While rare variants in the COL5A1 gene have been associated with classical Ehlers-Danlos syndrome and rarely with arterial dissections, recurrent variants in COL5A1 underlying a systemic arteriopathy have not been described. Monogenic forms of multifocal fibromuscular dysplasia (mFMD) have not been previously defined. Approach and Results: We studied 4 independent probands with the COL5A1 pathogenic variant c.1540G>A, p.(Gly514Ser) who presented with arterial aneurysms, dissections, tortuosity, and mFMD affecting multiple arteries. Arterial medial fibroplasia and smooth muscle cell disorganization were confirmed histologically. The COL5A1 c.1540G>A variant is predicted to be pathogenic in silico and absent in gnomAD. The c.1540G>A variant is on a shared 160.1 kb haplotype with 0.4% frequency in Europeans. Furthermore, exome sequencing data from a cohort of 264 individuals with mFMD were examined for COL5A1 variants. In this mFMD cohort, COL5A1 c.1540G>A and 6 additional relatively rare COL5A1 variants predicted to be deleterious in silico were identified and were associated with arterial dissections (P=0.005). CONCLUSIONS COL5A1 c.1540G>A is the first recurring variant recognized to be associated with arterial dissections and mFMD. This variant presents with a phenotype reminiscent of vascular Ehlers-Danlos syndrome. A shared haplotype among probands supports the existence of a common founder. Relatively rare COL5A1 genetic variants predicted to be deleterious by in silico analysis were identified in ≈2.7% of mFMD cases, and as they were enriched in patients with arterial dissections, may act as disease modifiers. Molecular testing for COL5A1 should be considered in patients with a phenotype overlapping with vascular Ehlers-Danlos syndrome and mFMD.
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Affiliation(s)
- Julie Richer
- Department of Medical Genetics, Children’s Hospital of Eastern Ontario, Ottawa, Ontario, Canada
- These authors contributed equally to this work
| | - Hannah L. Hill
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
- These authors contributed equally to this work
| | - Yu Wang
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
- These authors contributed equally to this work
| | - Min-Lee Yang
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Kristina L. Hunker
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Jamie Lane
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Susan Blackburn
- Clinical Trials Unit -Heart Vessel, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Dawn M. Coleman
- Section of Vascular Surgery, Department of Surgery, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Jonathan Eliason
- Section of Vascular Surgery, Department of Surgery, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Guillaume Sillon
- Division of Medical Genetics, Departments of Specialized Medicine and Human Genetics, McGill University, Montreal, Quebec, Canada
| | - Maria-Daniela D’Agostino
- Division of Medical Genetics, Departments of Specialized Medicine and Human Genetics, McGill University, Montreal, Quebec, Canada
| | - Prasad Jetty
- Division of Vascular Surgery, University of Ottawa, Ottawa, Ontario, Canada
| | - François-Pierre Mongeon
- Division of Non Invasive Cardiology, Department of Specialized Medicine, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Anne-Marie Laberge
- Medical Genetics, Department of Pediatrics, CHU Ste-Justine, Quebec, Canada
| | - Stephen E. Ryan
- Department of Radiology, University of Ottawa, Ottawa, Ontario, Canada
| | | | - Thais Coutinho
- Division of Cardiology and Division of Cardiac Prevention and Rehabilitation, University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - Michael R. Mathis
- Department of Anesthesiology, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Matthew Zawistowski
- Department of Biostatistics and Center for Statistical Genetics, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Stanley L. Hazen
- Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
- Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Alex E. Katz
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
- Medical Genomics and Metabolic Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA
| | - Heather L. Gornik
- Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Chad M. Brummett
- Department of Anesthesiology, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Goncalo Abecasis
- Department of Biostatistics and Center for Statistical Genetics, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Ingrid L. Bergin
- Unit for Laboratory Animal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - James C. Stanley
- Section of Vascular Surgery, Department of Surgery, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Jun Z. Li
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Santhi K. Ganesh
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
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8
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Wang Y, Coleman DM, Yang ML, Blackburn S, Hunker KL, Gornik HL, Li J, Stanley JC, Ganesh S. Adult and Pediatric Fibromuscular Dysplasia Are Genetically Distinct Dysplasia-Associated Arterial Diseases. JVS Vasc Sci 2020. [DOI: 10.1016/j.jvssci.2020.11.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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9
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Avenarius MR, Jung JY, Askew C, Jones SM, Hunker KL, Azaiez H, Rehman AU, Schraders M, Najmabadi H, Kremer H, Smith RJH, Géléoc GSG, Dolan DF, Raphael Y, Kohrman DC. Grxcr2 is required for stereocilia morphogenesis in the cochlea. PLoS One 2018; 13:e0201713. [PMID: 30157177 PMCID: PMC6114524 DOI: 10.1371/journal.pone.0201713] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 07/22/2018] [Indexed: 11/18/2022] Open
Abstract
Hearing and balance depend upon the precise morphogenesis and mechanosensory function of stereocilia, the specialized structures on the apical surface of sensory hair cells in the inner ear. Previous studies of Grxcr1 mutant mice indicated a critical role for this gene in control of stereocilia dimensions during development. In this study, we analyzed expression of the paralog Grxcr2 in the mouse and evaluated auditory and vestibular function of strains carrying targeted mutations of the gene. Peak expression of Grxcr2 occurs during early postnatal development of the inner ear and GRXCR2 is localized to stereocilia in both the cochlea and in vestibular organs. Homozygous Grxcr2 deletion mutants exhibit significant hearing loss by 3 weeks of age that is associated with developmental defects in stereocilia bundle orientation and organization. Despite these bundle defects, the mechanotransduction apparatus assembles in relatively normal fashion as determined by whole cell electrophysiological evaluation and FM1-43 uptake. Although Grxcr2 mutants do not exhibit overt vestibular dysfunction, evaluation of vestibular evoked potentials revealed subtle defects of the mutants in response to linear accelerations. In addition, reduced Grxcr2 expression in a hypomorphic mutant strain is associated with progressive hearing loss and bundle defects. The stereocilia localization of GRXCR2, together with the bundle pathologies observed in the mutants, indicate that GRXCR2 plays an intrinsic role in bundle orientation, organization, and sensory function in the inner ear during development and at maturity.
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Affiliation(s)
- Matthew R. Avenarius
- Department of Otolaryngology/Kresge Hearing Research Institute, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Jae-Yun Jung
- Department of Otolaryngology/Kresge Hearing Research Institute, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Charles Askew
- Neuroscience Graduate Program, University of Virginia, Charlottesville, Virginia, United States of America
- Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Sherri M. Jones
- Department of Communication Sciences and Disorders, East Carolina University, Greenville, North Carolina, United States of America
| | - Kristina L. Hunker
- Department of Otolaryngology/Kresge Hearing Research Institute, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Hela Azaiez
- Molecular Otolaryngology and Renal Research Laboratories, Carver College of Medicine, University of Iowa, Iowa City, Iowa, United States of America
| | - Atteeq U. Rehman
- Section on Human Genetics, Laboratory of Molecular Genetics, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Rockville, Maryland, United States of America
| | - Margit Schraders
- Hearing & Genes Division, Department of Otorhinolaryngology, Radboud University Medical Center, Nijmegen, The Netherlands
- Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Hossein Najmabadi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Hannie Kremer
- Hearing & Genes Division, Department of Otorhinolaryngology, Radboud University Medical Center, Nijmegen, The Netherlands
- Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Richard J. H. Smith
- Molecular Otolaryngology and Renal Research Laboratories, Carver College of Medicine, University of Iowa, Iowa City, Iowa, United States of America
| | - Gwenaëlle S. G. Géléoc
- Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - David F. Dolan
- Department of Otolaryngology/Kresge Hearing Research Institute, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Yehoash Raphael
- Department of Otolaryngology/Kresge Hearing Research Institute, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - David C. Kohrman
- Department of Otolaryngology/Kresge Hearing Research Institute, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
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10
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Cleuren AC, van der Ent MA, Hunker KL, Yang ML, Jiang H, Ginsburg D, Ganesh SK. Abstract 009: Ribosomal Profiling of Vascular Smooth Muscle Cells
in Vivo
Identifies Cell-type Specific Transcripts and Enrichment of Blood Pressure Associated Genes. Arterioscler Thromb Vasc Biol 2018. [DOI: 10.1161/atvb.38.suppl_1.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background:
Vascular smooth muscle cells (vSMCs) are essential for maintaining blood vessel tone and vascular remodeling. Although they play an important role in cardiovascular pathologies, studying peripheral artery vSMCs
in vivo
has been complicated given their interspersed anatomic distribution and technical difficulties with isolating vSMCs from arteries and arterioles while preserving transcriptome profiles.
Methods and Results:
Combining the murine
Rpl22
fl
Ribotag model with a vSMC-specific Transgelin-Cre (
Tagln-Cre
) Recombinase knock-in, we performed translating ribosome affinity purification and isolation of mRNA derived specifically from
Cre
-expressing
+
cells only. Subsequent high-throughput sequencing of both whole tissue mRNA and the vSMC-selected mRNA of the brain, kidney and liver was followed by differential expression analysis to identify genes enriched in the vSMC compartment. Genes significantly enriched in all three tissues (FDR <5%) included well known vSMC markers such as Smooth muscle actin (
Acta2
) and Calponin-1 (
Cnn1
) in addition to
Tagln.
Furthermore, transcripts involved in biological processes associated with extracellular matrix and structure organization were enriched and significant overrepresentation of these genes was also seen by gene ontology analysis. Genes with roles in blood pressure regulation, such as Regulator of G protein signaling 5 (
Rgs5
) and Sphingosine-1-phosphate receptor 3 (
S1pr3
) were also significantly enriched in the vSMC transcriptome, and the expression and vSMC-specific localization of these genes were confirmed by fluorescent single-molecule
in situ
hybridization assays. Further, we performed gene set enrichment analysis of genes associated with blood pressure and hypertension based on human genome-wide association studies, and a significant number of these genes (
P
=0.003) showed vSMC-specific expression patterns in our
in vivo
data.
Conclusion:
Our data demonstrate the feasibility of profiling vSMC gene expression
in vivo.
Furthermore, we identified enrichment of blood pressure-associated genes in the vSMC transcriptome. This model has the potential to provide new insights into the role of vSMCs in physiology and a variety of cardiovascular pathologies.
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11
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Shen YC, Jeyabalan AK, Wu KL, Hunker KL, Kohrman DC, Thompson DL, Liu D, Barald KF. The transmembrane inner ear (tmie) gene contributes to vestibular and lateral line development and function in the zebrafish (Danio rerio). Dev Dyn 2008; 237:941-52. [PMID: 18330929 DOI: 10.1002/dvdy.21486] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
The inner ear is a complex organ containing sensory tissue, including hair cells, the development of which is not well understood. Our long-term goal is to discover genes critical for the correct formation and function of the inner ear and its sensory tissue. A novel gene, transmembrane inner ear (Tmie), was found to cause hearing-related disorders when defective in mice and humans. A homologous tmie gene in zebrafish was cloned and its expression characterized between 24 and 51 hours post-fertilization. Embryos injected with morpholinos (MO) directed against tmie exhibited circling swimming behavior (approximately 37%), phenocopying mice with Tmie mutations; semicircular canal formation was disrupted, hair cell numbers were reduced, and maturation of electrically active lateral line neuromasts was delayed. As in the mouse, tmie appears to be required for inner ear development and function in the zebrafish and for hair cell maturation in the vestibular and lateral line systems as well.
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Affiliation(s)
- Yu-Chi Shen
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, Michigan 48109-2200, USA
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