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Yanni J, D'Souza A, Wang Y, Li N, Hansen BJ, Zakharkin SO, Smith M, Hayward C, Whitson BA, Mohler PJ, Janssen PML, Zeef L, Choudhury M, Zi M, Cai X, Logantha SJRJ, Nakao S, Atkinson A, Petkova M, Doris U, Ariyaratnam J, Cartwright EJ, Griffiths-Jones S, Hart G, Fedorov VV, Oceandy D, Dobrzynski H, Boyett MR. Silencing miR-370-3p rescues funny current and sinus node function in heart failure. Sci Rep 2020; 10:11279. [PMID: 32647133 PMCID: PMC7347645 DOI: 10.1038/s41598-020-67790-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 06/12/2019] [Accepted: 06/02/2020] [Indexed: 01/13/2023] Open
Abstract
Bradyarrhythmias are an important cause of mortality in heart failure and previous studies indicate a mechanistic role for electrical remodelling of the key pacemaking ion channel HCN4 in this process. Here we show that, in a mouse model of heart failure in which there is sinus bradycardia, there is upregulation of a microRNA (miR-370-3p), downregulation of the pacemaker ion channel, HCN4, and downregulation of the corresponding ionic current, If, in the sinus node. In vitro, exogenous miR-370-3p inhibits HCN4 mRNA and causes downregulation of HCN4 protein, downregulation of If, and bradycardia in the isolated sinus node. In vivo, intraperitoneal injection of an antimiR to miR-370-3p into heart failure mice silences miR-370-3p and restores HCN4 mRNA and protein and If in the sinus node and blunts the sinus bradycardia. In addition, it partially restores ventricular function and reduces mortality. This represents a novel approach to heart failure treatment.
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Affiliation(s)
- Joseph Yanni
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Alicia D'Souza
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Yanwen Wang
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Ning Li
- Physiology and Cell Biology, Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
- Bob and Corrine Frick Center for Heart Failure and Arrhythmia Research and Dorothy M. Davis Heart and Lung Research Institute, Ohio State University, Columbus, OH, 43210, USA
| | - Brian J Hansen
- Physiology and Cell Biology, Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
- Bob and Corrine Frick Center for Heart Failure and Arrhythmia Research and Dorothy M. Davis Heart and Lung Research Institute, Ohio State University, Columbus, OH, 43210, USA
| | - Stanislav O Zakharkin
- Physiology and Cell Biology, Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Matthew Smith
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Christina Hayward
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Bryan A Whitson
- Bob and Corrine Frick Center for Heart Failure and Arrhythmia Research and Dorothy M. Davis Heart and Lung Research Institute, Ohio State University, Columbus, OH, 43210, USA
- Department of Surgery, Division of Cardiac Surgery, Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Peter J Mohler
- Physiology and Cell Biology, Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
- Bob and Corrine Frick Center for Heart Failure and Arrhythmia Research and Dorothy M. Davis Heart and Lung Research Institute, Ohio State University, Columbus, OH, 43210, USA
- Department of Internal Medicine, Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Paul M L Janssen
- Physiology and Cell Biology, Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
- Bob and Corrine Frick Center for Heart Failure and Arrhythmia Research and Dorothy M. Davis Heart and Lung Research Institute, Ohio State University, Columbus, OH, 43210, USA
- Department of Internal Medicine, Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Leo Zeef
- Bioinformatics Core Facility, University of Manchester, Manchester, UK
| | - Moinuddin Choudhury
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Min Zi
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Xue Cai
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Sunil Jit R J Logantha
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
- Liverpool Centre for Cardiovascular Science, University of Liverpool, Liverpool, UK
| | - Shu Nakao
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Andrew Atkinson
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Maria Petkova
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Ursula Doris
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Jonathan Ariyaratnam
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Elizabeth J Cartwright
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Sam Griffiths-Jones
- Division of Evolution and Genomics Sciences, University of Manchester, Manchester, UK
| | - George Hart
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Vadim V Fedorov
- Physiology and Cell Biology, Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
- Bob and Corrine Frick Center for Heart Failure and Arrhythmia Research and Dorothy M. Davis Heart and Lung Research Institute, Ohio State University, Columbus, OH, 43210, USA
| | - Delvac Oceandy
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
| | - Halina Dobrzynski
- Division of Cardiovascular Sciences, University of Manchester, 46 Grafton Street, Manchester, M13 9NT, UK
- Department of Anatomy, Jagiellonian University Medical College, Kraków, Poland
| | - Mark R Boyett
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200N, Copenhagen, Denmark.
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Doris U, Kharche S, Petkova M, Borbas B, Logantha SJRJ, Fedorenko O, Maczewski M, Mackiewicz U, Zhang Y, Chahal A, D'Souza A, Atkinson AJ, Dobrzynski H, Yanni J. A sexy approach to pacemaking: differences in function and molecular make up of the sinoatrial node. Histol Histopathol 2019; 34:1255-1268. [PMID: 30968943 DOI: 10.14670/hh-18-115] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Functional properties of the sinoatrial node (SAN) are known to differ between sexes. Women have higher resting and intrinsic heart rates. Sex determines the risk of developing certain arrhythmias such as sick sinus syndrome, which occur more often in women. We believe that a major contributor to these differences is in gender specific ion channel expression. METHODS qPCR was used to compare ion channel gene expression in the SAN and right atrium (RA) between male and female rats. Histology, immunohistochemistry and signal intensity analysis were used to locate the SAN and determine abundance of ion channels. The effect of nifedipine on extracellular potential recording was used to determine differences in beating rate between sexes. RESULTS mRNAs for Cav1.3, Kir3.1, and Nkx2-5, as well as expression of the L-Type Ca²⁺ channel protein, were higher in the female SAN. Females had significantly higher intrinsic heart rates and the effect of nifedipine on isolated SAN preparations was significantly greater in male SAN. Computer modelling using a SAN cell model demonstrated a higher propensity of pacemaker-related arrhythmias in females. CONCLUSION This study has identified key differences in the expression of Cav1.3, Kir3.1 and Nkx2-5 at mRNA and/or protein levels between male and female SAN. Cav1.3 plays an important role in the pacemaker function of the SAN, therefore the higher intrinsic heart rate of the female SAN could be caused by the higher expression of Cav1.3. The differences identified in this study advance our understanding of sex differences in cardiac electrophysiology and arrhythmias.
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Affiliation(s)
- Ursula Doris
- Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, England, UK
| | - Sanjay Kharche
- Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, England, UK.,Department of Biophysics and Lawson Health Research Institute, University of Western Ontario, London, Canada
| | - Maria Petkova
- Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, England, UK
| | - Balint Borbas
- Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, England, UK
| | - Sunil Jit R J Logantha
- Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, England, UK
| | - Olga Fedorenko
- Mental Health Research Institute, Tomsk National Research Medical Centre, Tomsk, Russian Federation.,School of Non-Destructive Testing and Security, National Tomsk Polytechnic University, Tomsk, Russian Federation
| | | | | | - Yu Zhang
- Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, England, UK
| | - Anwar Chahal
- Mayo Clinic, Rochester, Minnesota, USA.,Papworth Hospital NHS Trust, Cambridge, UK
| | - Alicia D'Souza
- Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, England, UK
| | - Andrew J Atkinson
- Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, England, UK
| | - Halina Dobrzynski
- Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, England, UK.
| | - Joseph Yanni
- Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, England, UK
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