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Yu R, Wang Y, Zhu J, Yang G. H 2S-mediated blockage of protein acetylation and oxidative stress attenuates lipid overload-induced cardiac senescence. Arch Physiol Biochem 2024; 130:96-109. [PMID: 34511001 DOI: 10.1080/13813455.2021.1976209] [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: 07/20/2021] [Accepted: 08/30/2021] [Indexed: 10/20/2022]
Abstract
Hydrogen sulphide (H2S), a newly identified gasotransmitter, can be endogenously produced by cystathionine gamma-lyase (CSE) in the cardiovascular system. This study investigated the role of the CSE/H2S system on lipid overload-induced lipotoxicity and cardiac senescence. Lipid overload in rat cardiomyocyte cells (H9C2) promoted intracellular accumulation of lipid, oxidative stress, mitochondrial dysfunctions, lipid peroxidation and inhibited cell viability, all of which could be reversed by exogenously applied H2S. Further data revealed that H2S protected H9C2 cells from lipid overload-induced senescence by altering the expressions of lipid metabolism-related genes and inhibiting cellular acetyl-CoA and global protein acetylation. Enhancement of protein acetylation abolished the protective role of H2S on cardiac senescence. In vivo, knockout of the CSE gene strengthened cardiac lipid accumulation, protein acetylation, and cellular ageing in high fat diet-fed mice. Taken together, the CSE/H2S system is capable of maintaining lipid homeostasis and cellular senescence in heart cells under lipid overload.
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Affiliation(s)
- Ruihuan Yu
- School of Biological, Chemical & Forensic Sciences, Laurentian University, Sudbury, Canada
- Cardiovascular and Metabolic Research Unit, Laurentian University, Sudbury, Canada
| | - Yuehong Wang
- School of Biological, Chemical & Forensic Sciences, Laurentian University, Sudbury, Canada
- Cardiovascular and Metabolic Research Unit, Laurentian University, Sudbury, Canada
| | - Jiechun Zhu
- School of Biological, Chemical & Forensic Sciences, Laurentian University, Sudbury, Canada
- Cardiovascular and Metabolic Research Unit, Laurentian University, Sudbury, Canada
| | - Guangdong Yang
- School of Biological, Chemical & Forensic Sciences, Laurentian University, Sudbury, Canada
- Cardiovascular and Metabolic Research Unit, Laurentian University, Sudbury, Canada
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2
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Li D, Li Y, Ding H, Wang Y, Xie Y, Zhang X. Cellular Senescence in Cardiovascular Diseases: From Pathogenesis to Therapeutic Challenges. J Cardiovasc Dev Dis 2023; 10:439. [PMID: 37887886 PMCID: PMC10607269 DOI: 10.3390/jcdd10100439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/17/2023] [Accepted: 10/19/2023] [Indexed: 10/28/2023] Open
Abstract
Cellular senescence (CS), classically considered a stable cell cycle withdrawal, is hallmarked by a progressive decrease in cell growth, differentiation, and biological activities. Senescent cells (SNCs) display a complicated senescence-associated secretory phenotype (SASP), encompassing a variety of pro-inflammatory factors that exert influence on the biology of both the cell and surrounding tissue. Among global mortality causes, cardiovascular diseases (CVDs) stand out, significantly impacting the living quality and functional abilities of patients. Recent data suggest the accumulation of SNCs in aged or diseased cardiovascular systems, suggesting their potential role in impairing cardiovascular function. CS operates as a double-edged sword: while it can stimulate the restoration of organs under physiological conditions, it can also participate in organ and tissue dysfunction and pave the way for multiple chronic diseases under pathological states. This review explores the mechanisms that underlie CS and delves into the distinctive features that characterize SNCs. Furthermore, we describe the involvement of SNCs in the progression of CVDs. Finally, the study provides a summary of emerging interventions that either promote or suppress senescence and discusses their therapeutic potential in CVDs.
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Affiliation(s)
- Dan Li
- Department of Cardiovascular Medicine, Lanzhou University Second Hospital, Lanzhou 730030, China; (D.L.); (H.D.); (Y.W.); (Y.X.)
| | - Yongnan Li
- Department of Cardiac Surgery, Lanzhou University Second Hospital, Lanzhou 730030, China;
| | - Hong Ding
- Department of Cardiovascular Medicine, Lanzhou University Second Hospital, Lanzhou 730030, China; (D.L.); (H.D.); (Y.W.); (Y.X.)
| | - Yuqin Wang
- Department of Cardiovascular Medicine, Lanzhou University Second Hospital, Lanzhou 730030, China; (D.L.); (H.D.); (Y.W.); (Y.X.)
| | - Yafei Xie
- Department of Cardiovascular Medicine, Lanzhou University Second Hospital, Lanzhou 730030, China; (D.L.); (H.D.); (Y.W.); (Y.X.)
| | - Xiaowei Zhang
- Department of Cardiovascular Medicine, Lanzhou University Second Hospital, Lanzhou 730030, China; (D.L.); (H.D.); (Y.W.); (Y.X.)
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3
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Washausen S, Knabe W. Patterns of senescence and apoptosis during development of branchial arches, epibranchial placodes, and pharyngeal pouches. Dev Dyn 2023; 252:1189-1223. [PMID: 37345578 DOI: 10.1002/dvdy.637] [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: 02/03/2022] [Revised: 04/27/2023] [Accepted: 05/31/2023] [Indexed: 06/23/2023] Open
Abstract
BACKGROUND Many developmental processes are coregulated by apoptosis and senescence. However, there is a lack of data on the development of branchial arches, epibranchial placodes, and pharyngeal pouches, which harbor epibranchial signaling centers. RESULTS Using immunohistochemical, histochemical, and 3D reconstruction methods, we show that in mice, senescence and apoptosis together may contribute to the invagination of the branchial clefts and the deepening of the cervical sinus floor, in antagonism to the proliferation acting in the evaginating branchial arches. The concomitant apoptotic elimination of lateral line rudiments occurs in the absence of senescence. In the epibranchial placodes, senescence and apoptosis appear to (1) support invagination or at least indentation by immobilizing the margins of the centrally proliferating pit, (2) coregulate the number and fate of Pax8+ precursors, (3) progressively narrow neuroblast delamination sites, and (4) contribute to placode regression. Putative epibranchial signaling centers in the pharyngeal pouches are likely deactivated by rostral senescence and caudal apoptosis. CONCLUSIONS Our results reveal a plethora of novel patterns of apoptosis and senescence, some overlapping, some complementary, whose functional contributions to the development of the branchial region, including the epibranchial placodes and their signaling centers, can now be tested experimentally.
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Affiliation(s)
- Stefan Washausen
- Prosektur Anatomie, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Wolfgang Knabe
- Prosektur Anatomie, Westfälische Wilhelms-Universität Münster, Münster, Germany
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4
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D'Antonio M, Nguyen JP, Arthur TD, Matsui H, D'Antonio-Chronowska A, Frazer KA. Fine mapping spatiotemporal mechanisms of genetic variants underlying cardiac traits and disease. Nat Commun 2023; 14:1132. [PMID: 36854752 PMCID: PMC9975214 DOI: 10.1038/s41467-023-36638-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 02/10/2023] [Indexed: 03/02/2023] Open
Abstract
The causal variants and genes underlying thousands of cardiac GWAS signals have yet to be identified. Here, we leverage spatiotemporal information on 966 RNA-seq cardiac samples and perform an expression quantitative trait locus (eQTL) analysis detecting eQTLs considering both eGenes and eIsoforms. We identify 2,578 eQTLs associated with a specific developmental stage-, tissue- and/or cell type. Colocalization between eQTL and GWAS signals of five cardiac traits identified variants with high posterior probabilities for being causal in 210 GWAS loci. Pulse pressure GWAS loci are enriched for colocalization with fetal- and smooth muscle- eQTLs; pulse rate with adult- and cardiac muscle- eQTLs; and atrial fibrillation with cardiac muscle- eQTLs. Fine mapping identifies 79 credible sets with five or fewer SNPs, of which 15 were associated with spatiotemporal eQTLs. Our study shows that many cardiac GWAS variants impact traits and disease in a developmental stage-, tissue- and/or cell type-specific fashion.
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Affiliation(s)
- Matteo D'Antonio
- Department of Pediatrics, University of California San Diego, La Jolla, CA, 92093, USA.
- Division of Biomedical Informatics, University of California, San Diego, La Jolla, CA, 92093, USA.
- Institute of Genomic Medicine, University of California San Diego, 9500 Gilman Dr, La Jolla, CA, 92093, USA.
| | - Jennifer P Nguyen
- Division of Biomedical Informatics, University of California, San Diego, La Jolla, CA, 92093, USA
- Bioinformatics and Systems Biology Graduate Program, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Timothy D Arthur
- Division of Biomedical Informatics, University of California, San Diego, La Jolla, CA, 92093, USA
- Biomedical Sciences Graduate Program, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Hiroko Matsui
- Institute of Genomic Medicine, University of California San Diego, 9500 Gilman Dr, La Jolla, CA, 92093, USA
| | | | - Kelly A Frazer
- Department of Pediatrics, University of California San Diego, La Jolla, CA, 92093, USA.
- Institute of Genomic Medicine, University of California San Diego, 9500 Gilman Dr, La Jolla, CA, 92093, USA.
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5
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Mehdizadeh M, Aguilar M, Thorin E, Ferbeyre G, Nattel S. The role of cellular senescence in cardiac disease: basic biology and clinical relevance. Nat Rev Cardiol 2022; 19:250-264. [PMID: 34667279 DOI: 10.1038/s41569-021-00624-2] [Citation(s) in RCA: 80] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/06/2021] [Indexed: 12/11/2022]
Abstract
Cellular senescence, classically defined as stable cell cycle arrest, is implicated in biological processes such as embryogenesis, wound healing and ageing. Senescent cells have a complex senescence-associated secretory phenotype (SASP), involving a range of pro-inflammatory factors with important paracrine and autocrine effects on cell and tissue biology. Clinical evidence and experimental studies link cellular senescence, senescent cell accumulation, and the production and release of SASP components with age-related cardiac pathologies such as heart failure, myocardial ischaemia and infarction, and cancer chemotherapy-related cardiotoxicity. However, the precise role of senescent cells in these conditions is unclear and, in some instances, both detrimental and beneficial effects have been reported. The involvement of cellular senescence in other important entities, such as cardiac arrhythmias and remodelling, is poorly understood. In this Review, we summarize the basic biology of cellular senescence and discuss what is known about the role of cellular senescence and the SASP in heart disease. We then consider the various approaches that are being developed to prevent the accumulation of senescent cells and their consequences. Many of these strategies are applicable in vivo and some are being investigated for non-cardiac indications in clinical trials. We end by considering important knowledge gaps, directions for future research and the potential implications for improving the management of patients with heart disease.
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Affiliation(s)
- Mozhdeh Mehdizadeh
- Research Center, Montreal Heart Institute, Université de Montréal, Montreal, QC, Canada.,Department of Pharmacology and Therapeutics, McGill University, Montreal, QC, Canada
| | - Martin Aguilar
- Research Center, Montreal Heart Institute, Université de Montréal, Montreal, QC, Canada.,Department of Medicine, Université de Montréal, Montreal, QC, Canada
| | - Eric Thorin
- Research Center, Montreal Heart Institute, Université de Montréal, Montreal, QC, Canada.,Department of Surgery, Université de Montréal, Montreal, QC, Canada
| | - Gerardo Ferbeyre
- Department of Biochemistry, Université de Montréal and CRCHUM, Montreal, QC, Canada
| | - Stanley Nattel
- Research Center, Montreal Heart Institute, Université de Montréal, Montreal, QC, Canada. .,Department of Pharmacology and Therapeutics, McGill University, Montreal, QC, Canada. .,Department of Medicine, Université de Montréal, Montreal, QC, Canada. .,Department of Pharmacology and Physiology, Faculty of Medicine, Université de Montréal, Montreal, QC, Canada. .,Institute of Pharmacology, West German Heart and Vascular Center, Faculty of Medicine, University Duisburg-Essen, Essen, Germany. .,IHU LIRYC and Fondation Bordeaux, Université Bordeaux, Bordeaux, France.
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6
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Bock J, Covassin N, Somers V. Excessive daytime sleepiness: an emerging marker of cardiovascular risk. Heart 2022; 108:1761-1766. [DOI: 10.1136/heartjnl-2021-319596] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 01/12/2022] [Indexed: 12/19/2022] Open
Abstract
Excessive daytime sleepiness (EDS) is classically viewed as a consequence of insufficient sleep or a symptom of sleep disorders. Epidemiological and clinical evidence have shown that patients reporting EDS in tandem with sleep disorders (e.g., obstructive sleep apnoea) are at greater cardiovascular risk than non-sleepy patients. While this may simply be attributable to EDS being present in patients with a more severe condition, treatment of sleep disorders does not consistently alleviate EDS, indicating potential aetiological differences. Moreover, not all patients with sleep disorders report EDS, and daytime sleepiness may be present even in the absence of any identifiable sleep disorder; thus, EDS could represent an independent pathophysiology. The purpose of this review is twofold: first, to highlight evidence that EDS increases cardiovascular risk in the presence of sleep disorders such as obstructive sleep apnoea, narcolepsy and idiopathic hypersomnia and second, to propose the notion that EDS may also increase cardiovascular risk in the absence of known sleep disorders, as supported by some epidemiological and observational data. We further highlight preliminary evidence suggesting systemic inflammation, which could be attributable to dysfunction of the gut microbiome and adipose tissue, as well as deleterious epigenetic changes, may promote EDS while also increasing cardiovascular risk; however, these pathways may be reciprocal and/or circumstantial. Additionally, gaps within the literature are noted followed by directions for future research.
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7
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Huang S, Wu Y, Chen S, Yang Y, Wang Y, Wang H, Li P, Zhuang J, Xia Y. Novel insertion mutation (Arg1822_Glu1823dup) in MYH6 coiled-coil domain causing familial atrial septal defect. Eur J Med Genet 2021; 64:104314. [PMID: 34481090 DOI: 10.1016/j.ejmg.2021.104314] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 07/28/2021] [Accepted: 08/18/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Atrial septal defect, secundum (ASD Ⅱ, OMIM: 603642) is the second common congenital heart defect (CHD) in China. However, the genetic etiology of familial ASD II remains elusive. METHODS AND RESULTS Using whole-exome sequencing (WES) and Sanger sequencing, we identified a novel myosin heavy chain 6 (MYH6) gene insertion variation, NM_002471.3: c.5465_5470dup (Arg1822_Glu1823dup), in a large Chinese Han family with ASD II. The variant Arg1822_Glu1823dup co-segregated with the disease in this family with autosomal dominant inheritance. The insertion variant located in the coiled-coil domain of the MYH6 protein, which is highly conserved across homologous myosin proteins and species. In transfected myoblast C2C12 cell lines, the MYH6 Arg1822_Glu1823dup variant significantly impaired myofibril formation and increased apoptosis but did not significantly reduce cell viability. Furthermore, molecular simulations revealed that the Arg1822_Glu1823dup variant impaired the myosin α-helix, increasing the stability of the coiled-coil myosin dimer, suggesting that this variant has an effect on the coiled-coil domain self-aggregation. These findings indicate that Arg1822_Glu1823dup variant plays a crucial role in the pathogenesis of ASD II. CONCLUSION Our findings expand the spectrum of MYH6 variations associated with familial ASD II and may provide a molecular basis in genetic counseling and prenatal diagnosis for this Chinses family.
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Affiliation(s)
- Shufang Huang
- Prenatal Diagnosis Center, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China; Department of Obstetrics and Gynecology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yueheng Wu
- Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China; Research Department of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Shaoxian Chen
- Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China; Research Department of Medical Sciences, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yongchao Yang
- Department of Cardiovascular Surgery of Guangdong Provincial Cardiovascular Disease Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China; Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yonghua Wang
- Prenatal Diagnosis Center, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China; Department of Obstetrics and Gynecology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Haiping Wang
- Prenatal Diagnosis Center, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China; Department of Obstetrics and Gynecology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Ping Li
- Prenatal Diagnosis Center, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China; Department of Obstetrics and Gynecology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jian Zhuang
- Department of Cardiovascular Surgery of Guangdong Provincial Cardiovascular Disease Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China; Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yu Xia
- Department of Cardiovascular Surgery, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China; The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.
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8
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Thompson B, Davidson EA, Liu W, Nebert DW, Bruford EA, Zhao H, Dermitzakis ET, Thompson DC, Vasiliou V. Overview of PAX gene family: analysis of human tissue-specific variant expression and involvement in human disease. Hum Genet 2021; 140:381-400. [PMID: 32728807 PMCID: PMC7939107 DOI: 10.1007/s00439-020-02212-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 07/25/2020] [Indexed: 12/18/2022]
Abstract
Paired-box (PAX) genes encode a family of highly conserved transcription factors found in vertebrates and invertebrates. PAX proteins are defined by the presence of a paired domain that is evolutionarily conserved across phylogenies. Inclusion of a homeodomain and/or an octapeptide linker subdivides PAX proteins into four groups. Often termed "master regulators", PAX proteins orchestrate tissue and organ development throughout cell differentiation and lineage determination, and are essential for tissue structure and function through maintenance of cell identity. Mutations in PAX genes are associated with myriad human diseases (e.g., microphthalmia, anophthalmia, coloboma, hypothyroidism, acute lymphoblastic leukemia). Transcriptional regulation by PAX proteins is, in part, modulated by expression of alternatively spliced transcripts. Herein, we provide a genomics update on the nine human PAX family members and PAX homologs in 16 additional species. We also present a comprehensive summary of human tissue-specific PAX transcript variant expression and describe potential functional significance of PAX isoforms. While the functional roles of PAX proteins in developmental diseases and cancer are well characterized, much remains to be understood regarding the functional roles of PAX isoforms in human health. We anticipate the analysis of tissue-specific PAX transcript variant expression presented herein can serve as a starting point for such research endeavors.
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Affiliation(s)
- Brian Thompson
- Department of Environmental Health Sciences, Yale School of Public Health, 60 College Street, New Haven, CT, 06510, USA
| | - Emily A Davidson
- Department of Environmental Health Sciences, Yale School of Public Health, 60 College Street, New Haven, CT, 06510, USA
| | - Wei Liu
- Program of Computational Biology and Bioinformatics, Yale University, New Haven, CT, 06510, USA
| | - Daniel W Nebert
- Department of Environmental Health and Center for Environmental Genetics, Cincinnati Children's Research Center, University of Cincinnati Medical Center, Cincinnati, OH, 45267, USA
- Department of Pediatrics and Molecular and Developmental Biology, Cincinnati Children's Research Center, University of Cincinnati Medical Center, Cincinnati, OH, 45267, USA
| | - Elspeth A Bruford
- HUGO Gene Nomenclature Committee, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge, CB10 1SD, UK
- Department of Haematology, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge, CB2 0AW, UK
| | - Hongyu Zhao
- Program of Computational Biology and Bioinformatics, Yale University, New Haven, CT, 06510, USA
- Department of Biostatistics, Yale School of Public Health, New Haven, CT, 06510, USA
- Department of Genetics, Yale School of Medicine, New Haven, CT, 06510, USA
| | - Emmanouil T Dermitzakis
- Department of Genetic Medicine and Development, University of Geneva Medical School, 1211, Geneva, Switzerland
- Institute for Genetics and Genomics in Geneva (iGE3), University of Geneva, 1211, Geneva, Switzerland
- Swiss Institute of Bioinformatics, Geneva, Switzerland
| | - David C Thompson
- Department of Clinical Pharmacy, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Denver, Aurora, CO, 80045, USA
| | - Vasilis Vasiliou
- Department of Environmental Health Sciences, Yale School of Public Health, 60 College Street, New Haven, CT, 06510, USA.
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9
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Varshney A, Chahal G, Santos L, Stolper J, Hallab JC, Nim HT, Nikolov M, Yip A, Ramialison M. Human Cardiac Transcription Factor Networks. SYSTEMS MEDICINE 2021. [DOI: 10.1016/b978-0-12-801238-3.11597-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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10
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Wan GX, Cheng L, Qin HL, Zhang YZ, Wang LY, Zhang YG. MiR-15b-5p is Involved in Doxorubicin-Induced Cardiotoxicity via Inhibiting Bmpr1a Signal in H9c2 Cardiomyocyte. Cardiovasc Toxicol 2019; 19:264-275. [PMID: 30535663 DOI: 10.1007/s12012-018-9495-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The wide use of anthracyclines represented by doxorubicin (DOX) has benefited cancer patients, yet the clinical application is limited due to its cardiotoxicity. Although numerous evidences have supported a role of microRNAs (miRNAs) in DOX-induced myocardial damage, the exact etiology and pathogenesis remain largely obscure. In this study, we focused on the role of miR-15b-5p in DOX-induced cardiotoxicity. We employed a public miRNA and gene microarray to screen differentially expressed miRNAs (DEMs) and differentially expressed genes (DEGs) in rat cardiomyocytes, and 33 DEMs including miR-15b-5p and 237 DEGs including Bmpr1a and Gata4 were identified. The Gene ontology (GO) and pathway enrichment analysis of 237 DEGs indicated that the DEGs were mainly enriched in heart development and ALK pathway in cardiomyocyte which included the main receptor Bmpr1a and transcription factor Gata4. The up-regulated miR-15b-5p and down-regulated Bmpr1a and Gata4 mRNA expressions were further validated in H9c2 cardiomyocytes exposed to DOX. Moreover, the results showed overexpression of miR-15b-5p or inhibition of Bmpr1a may enhance the DOX-induced apoptosis, oxidative stress and mitochondria damage in H9c2 cardiomyocytes. The Bmpr1a was suggested as a potential target of miR-15b-5p by bioinformatics prediction. We further verified the negatively regulatory effect of miR-15b-5p on Bmpr1a signaling. Moreover, we also confirmed that overexpression of miR-15b-5p may exacerbate the DOX-induced apoptosis of H9c2 cardiomyocytes by affecting the protein expression ratio of Bcl-2/Bax and Akt activation, while this pro-apoptotic effect was able to be suppressed by Bmpr1a agonist. Collectively, the results suggest that miR-15b-5p is likely involved in doxorubicin-induced cardiotoxicity via inhibiting Bmpr1a signaling in H9c2 cardiomyocytes. Our study provides a novel insight for investigating DOX-induced cardiotoxicity.
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Affiliation(s)
- Guo-Xing Wan
- Department of Cardiology, The Second Affiliated Hospital of Shantou University Medical College, Dongxia North Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Lan Cheng
- Department of Cardiology, The Second Affiliated Hospital of Shantou University Medical College, Dongxia North Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Hai-Lun Qin
- Department of Cardiology, The Second Affiliated Hospital of Shantou University Medical College, Dongxia North Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Yun-Zhang Zhang
- Department of Cardiology, The Second Affiliated Hospital of Shantou University Medical College, Dongxia North Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Ling-Yu Wang
- Department of Cardiology, The Second Affiliated Hospital of Shantou University Medical College, Dongxia North Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Yong-Gang Zhang
- Department of Cardiology, The Second Affiliated Hospital of Shantou University Medical College, Dongxia North Road, Shantou, 515041, Guangdong, People's Republic of China.
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