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Oh Y, Abid R, Dababneh S, Bakr M, Aslani T, Cook DP, Vanderhyden BC, Park JG, Munshi NV, Hui CC, Kim KH. Transcriptional regulation of the postnatal cardiac conduction system heterogeneity. Nat Commun 2024; 15:6550. [PMID: 39095365 PMCID: PMC11297185 DOI: 10.1038/s41467-024-50849-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 07/23/2024] [Indexed: 08/04/2024] Open
Abstract
The cardiac conduction system (CCS) is a network of specialized cardiomyocytes that coordinates electrical impulse generation and propagation for synchronized heart contractions. Although the components of the CCS, including the sinoatrial node, atrioventricular node, His bundle, bundle branches, and Purkinje fibers, were anatomically discovered more than 100 years ago, their molecular constituents and regulatory mechanisms remain incompletely understood. Here, we demonstrate the transcriptomic landscape of the postnatal mouse CCS at a single-cell resolution with spatial information. Integration of single-cell and spatial transcriptomics uncover region-specific markers and zonation patterns of expression. Network inference shows heterogeneous gene regulatory networks across the CCS. Notably, region-specific gene regulation is recapitulated in vitro using neonatal mouse atrial and ventricular myocytes overexpressing CCS-specific transcription factors, Tbx3 and/or Irx3. This finding is supported by ATAC-seq of different CCS regions, Tbx3 ChIP-seq, and Irx motifs. Overall, this study provides comprehensive molecular profiles of the postnatal CCS and elucidates gene regulatory mechanisms contributing to its heterogeneity.
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Affiliation(s)
- Yena Oh
- University of Ottawa Heart Institute, Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Rimshah Abid
- University of Ottawa Heart Institute, Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Saif Dababneh
- University of Ottawa Heart Institute, Ottawa, ON, Canada
- Department of Cellular and Physiological Sciences, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Marwan Bakr
- University of Ottawa Heart Institute, Ottawa, ON, Canada
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON, Canada
| | - Termeh Aslani
- University of Ottawa Heart Institute, Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - David P Cook
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
- Cancer Therapeutics Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Barbara C Vanderhyden
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
- Cancer Therapeutics Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Jin G Park
- Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ, USA
| | - Nikhil V Munshi
- Department of Internal Medicine, Division of Cardiology, UT Southwestern Medical Center, Dallas, TX, USA
- Department of Molecular Biology, UT Southwestern Medical Center, Dallas, TX, USA
- McDermott Center for Human Growth and Development, UT Southwestern Medical Center, Dallas, TX, USA
- Center for Regenerative Science and Medicine, UT Southwestern Medical Center, Dallas, TX, USA
| | - Chi-Chung Hui
- Program in Developmental & Stem Cell Biology, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Kyoung-Han Kim
- University of Ottawa Heart Institute, Ottawa, ON, Canada.
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.
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van Eif VW, Protze S, Bosada FM, Yuan X, Sinha T, van Duijvenboden K, Ernault AC, Mohan RA, Wakker V, de Gier-de Vries C, Hooijkaas IB, Wilson MD, Verkerk AO, Bakkers J, Boukens BJ, Black BL, Scott IC, Christoffels VM. Genome-Wide Analysis Identifies an Essential Human TBX3 Pacemaker Enhancer. Circ Res 2020; 127:1522-1535. [PMID: 33040635 PMCID: PMC8153223 DOI: 10.1161/circresaha.120.317054] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
RATIONALE The development and function of the pacemaker cardiomyocytes of the sinoatrial node (SAN), the leading pacemaker of the heart, are tightly controlled by a conserved network of transcription factors, including TBX3 (T-box transcription factor 3), ISL1 (ISL LIM homeobox 1), and SHOX2 (short stature homeobox 2). Yet, the regulatory DNA elements (REs) controlling target gene expression in the SAN pacemaker cells have remained undefined. OBJECTIVE Identification of the regulatory landscape of human SAN-like pacemaker cells and functional assessment of SAN-specific REs potentially involved in pacemaker cell gene regulation. METHODS AND RESULTS We performed Assay for Transposase-Accessible Chromatin using sequencing on human pluripotent stem cell-derived SAN-like pacemaker cells and ventricle-like cells and identified thousands of putative REs specific for either human cell type. We validated pacemaker cell-specific elements in the SHOX2 and TBX3 loci. CRISPR-mediated homozygous deletion of the mouse ortholog of a noncoding region with candidate pacemaker-specific REs in the SHOX2 locus resulted in selective loss of Shox2 expression from the developing SAN and embryonic lethality. Putative pacemaker-specific REs were identified up to 1 Mbp upstream of TBX3 in a region close to MED13L harboring variants associated with heart rate recovery after exercise. The orthologous region was deleted in mice, which resulted in selective loss of expression of Tbx3 from the SAN and (cardiac) ganglia and in neonatal lethality. Expression of Tbx3 was maintained in other tissues including the atrioventricular conduction system, lungs, and liver. Heterozygous adult mice showed increased SAN recovery times after pacing. The human REs harboring the associated variants robustly drove expression in the SAN of transgenic mouse embryos. CONCLUSIONS We provided a genome-wide collection of candidate human pacemaker-specific REs, including the loci of SHOX2, TBX3, and ISL1, and identified a link between human genetic variants influencing heart rate recovery after exercise and a variant RE with highly conserved function, driving SAN expression of TBX3.
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Affiliation(s)
- Vincent W.W. van Eif
- Department of Medical Biology, Amsterdam Cardiovascular Sciences, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Stephanie Protze
- McEwen Stem Cell Institute, University Health Network and the Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Fernanda M. Bosada
- Department of Medical Biology, Amsterdam Cardiovascular Sciences, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Xuefei Yuan
- The Hospital for Sick Children; and the Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
- Department of Molecular Genetics, University of Toronto, Canada
| | - Tanvi Sinha
- Cardiovascular Research Institute, Department of Biochemistry and Biophysics, University of California, San Francisco, United States
| | - Karel van Duijvenboden
- Department of Medical Biology, Amsterdam Cardiovascular Sciences, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Auriane C. Ernault
- Department of Experimental Cardiology, University of Amsterdam, Amsterdam University Medical Centers, Amsterdam, The Netherlands
- Aix-Marseille Université, INSERM, MMG - U1251, Marseille, France
| | - Rajiv A. Mohan
- Department of Medical Biology, Amsterdam Cardiovascular Sciences, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Vincent Wakker
- Department of Medical Biology, Amsterdam Cardiovascular Sciences, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Corrie de Gier-de Vries
- Department of Medical Biology, Amsterdam Cardiovascular Sciences, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Ingeborg B. Hooijkaas
- Department of Medical Biology, Amsterdam Cardiovascular Sciences, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Michael D. Wilson
- The Hospital for Sick Children; and the Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
- Department of Molecular Genetics, University of Toronto, Canada
| | - Arie O. Verkerk
- Department of Medical Biology, Amsterdam Cardiovascular Sciences, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
- Department of Experimental Cardiology, University of Amsterdam, Amsterdam University Medical Centers, Amsterdam, The Netherlands
| | - Jeroen Bakkers
- Hubrecht Institute and University Medical Center Utrecht, 3584 CT Utrecht, Netherlands
| | - Bastiaan J. Boukens
- Department of Medical Biology, Amsterdam Cardiovascular Sciences, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
- Department of Experimental Cardiology, University of Amsterdam, Amsterdam University Medical Centers, Amsterdam, The Netherlands
| | - Brian L. Black
- Cardiovascular Research Institute, Department of Biochemistry and Biophysics, University of California, San Francisco, United States
| | - Ian C. Scott
- The Hospital for Sick Children; and the Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
- Department of Molecular Genetics, University of Toronto, Canada
| | - Vincent M. Christoffels
- Department of Medical Biology, Amsterdam Cardiovascular Sciences, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
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Seki M, LaCanna R, Powers JC, Vrakas C, Liu F, Berretta R, Chacko G, Holten J, Jadiya P, Wang T, Arkles JS, Copper JM, Houser SR, Huang J, Patel VV, Recchia FA. Class I Histone Deacetylase Inhibition for the Treatment of Sustained Atrial Fibrillation. J Pharmacol Exp Ther 2016; 358:441-9. [PMID: 27353074 DOI: 10.1124/jpet.116.234591] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Accepted: 06/22/2016] [Indexed: 01/07/2023] Open
Abstract
Current therapies are less effective for treating sustained/permanent versus paroxysmal atrial fibrillation (AF). We and others have previously shown that histone deacetylase (HDAC) inhibition reverses structural and electrical atrial remodeling in mice with inducible, paroxysmal-like AF. Here, we hypothesize an important, specific role for class I HDACs in determining structural atrial alterations during sustained AF. The class I HDAC inhibitor N-acetyldinaline [4-(acetylamino)-N-(2-amino-phenyl) benzamide] (CI-994) was administered for 2 weeks (1 mg/kg/day) to Hopx transgenic mice with atrial remodeling and inducible AF and to dogs with atrial tachypacing-induced sustained AF. Class I HDAC inhibition prevented atrial fibrosis and arrhythmia inducibility in mice. Dogs were divided into three groups: 1) sinus rhythm, 2) sustained AF plus vehicle, and 3) sustained AF plus CI-994. In group 3, the time in AF over 2 weeks was reduced by 30% compared with group 2, along with attenuated atrial fibrosis and intra-atrial adipocyte infiltration. Moreover, group 2 dogs had higher atrial and serum inflammatory cytokines, adipokines, and atrial immune cells and adipocytes compared with groups 1 and 3. On the other hand, groups 2 and 3 displayed similar left atrial size, ventricular function, and mitral regurgitation. Importantly, the same histologic alterations found in dogs with sustained AF and reversed by CI-994 were also present in atrial tissue from transplanted patients with chronic AF. This is the first evidence that, in sustained AF, class I HDAC inhibition can reduce the total time of fibrillation, atrial fibrosis, intra-atrial adipocytes, and immune cell infiltration without significant effects on cardiac function.
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Affiliation(s)
- Mitsuru Seki
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Ryan LaCanna
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Jeffery C Powers
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Christine Vrakas
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Fang Liu
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Remus Berretta
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Geena Chacko
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - John Holten
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Pooja Jadiya
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Tao Wang
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Jeffery S Arkles
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Joshua M Copper
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Steven R Houser
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Jianhe Huang
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Vickas V Patel
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
| | - Fabio A Recchia
- Cardiovascular Research Center (M.S., R.L.C., J.C.P., C.V., R.B., G.C., Jo.H., P.J., T.W., S.R.H., Ji.H., V.V.P., F.A.R.), and Section of Clinical Cardiac Electrophysiology (J.S.A., J.M.C., V.V.P.), Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania; Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy (F.A.R.); and Children's Hospital of Philadelphia, Philadelphia, Pennsylvania (F.L.)
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