期刊
ANATOLIAN JOURNAL OF CARDIOLOGY
卷 26, 期 5, 页码 373-+出版社
AVES
DOI: 10.5152/AnatolJCardiol.2021.901
关键词
MiR-615-3p; MEF2A; oxidative stress; myocardial infarction
miR-615-3p protects human cardiomyocytes from oxidative stress injury by targeting MEF2A and inhibiting activation of the PI3K/Akt pathway.
Background: Myocardial infarction, a coronary heart disease, is a serious hazard to human health. Cardiomyocyte oxidative stress and apoptosis have been considered as the main causes of myocardial infarction. Here, we aimed to investigate the role of miR-615-3p in oxidative stress and apoptosis of human cardiomyocytes. Methods: Reverse transcription-quantitative polymerase chain reaction was performed to determine miR-615-3p or MEF2A expression in human cardiomyocytes. Apoptosis and viability of human cardiomyocytes were assessed by flow cytometry analysis and CCK-8 assay. In addition, the contents of malondialdehyde, reactive oxygen species, and superoxide dismutase were detected by corresponding commercial kits. The binding of miR-615-3p and MEF2A in human cardiomyocytes was examined by luciferase reporter assay. Results: Hypoxia/reoxygenation treatment downregulated the expression level of miR-615-3p in human cardiomyocytes. Overexpressing miR-615-3p increased human cardiomyocyte viability and decreased human cardiomyocyte apoptosis. Moreover, miR-615-3p mimics suppressed oxidative stress in hypoxia/reoxygenation-stimulated human cardiomyocytes. MEF2A was confirmed as a target gene of miR-615-3p and was highly expressed in hypoxia/reoxygenation-stimulated human cardiomyocytes, and its upregulation partially reversed the influence of miR-615-3p mimics on oxidative stress and apoptosis of human cardiomyocytes. Moreover, miR-615-3p inactivated the P13K/Akt pathway by inhibiting MEF2A. Conclusions: Overexpression of miR-615-3p protects human cardiomyocytes from oxidative stress injury by targeting MEF2A via the PI3K/Akt signaling.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据