Xue-Zheng Wang, Lei Chen, Hao Sun, Xiao-Qian Li, Hu Wang, Xiao-Peng Zhang, Jiang-Bin Sun, Hai-Yong Wang
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MiR-199a-3p promotes repair of myocardial infarction by targeting NACC2.
Objective: Myocardial infarction (MI) has gained widespread interest due to its high death and disability rate worldwide. Some miRNAs are markers of heart disease. Therefore, it is necessary to understand the mechanism for repairing MI injury.
Methods: Here, we evaluated the relative expression levels of miR-199a-3p in mouse and human myocardial cell models of injury, and its effect on myocardial cells viability using Cell Counting Kit-8 (CCK-8) assay, 5-ethynyl-2'-deoxyuridline (EdU) assay, and flow cytometry assay as well as western blot in vitro. Furthermore, we performed bioinformatic online analysis to investigate the role that miR-199a-3p plays in cardiomyocyte injury, measured by dual-luciferase reporter assay.
Results: The results showed that miR-199a-3p significantly increased the growth rate of cardiomyocytes after treating them with hydrogen peroxide (H2O2). miR-199a-3p also acted as an inhibitor that directly targeted NACC2, resulting in a higher NACC2 expression level in the injury model of cardiomyocytes than normal myocardial cells and thus preventing miR-199a-3p-induced proliferation promotion in model cardiomyocytes.
Conclusion: Our results demonstrate that miR-199a-3p may be a prognostic biomarker in myocardial injury.
期刊介绍：
The International Journal of Clinical and Experimental Pathology (IJCEP, ISSN 1936-2625) is a peer reviewed, open access online journal. It was founded in 2008 by an international group of academic pathologists and scientists who are devoted to the scientific exploration of human disease and the rapid dissemination of original data. Unlike most other open access online journals, IJCEP will keep all the traditional features of paper print that we are all familiar with, such as continuous volume and issue numbers, as well as continuous page numbers to keep our warm feelings towards an academic journal. Unlike most other open access online journals, IJCEP will keep all the traditional features of paper print that we are all familiar with, such as continuous volume and issue numbers, as well as continuous page numbers to keep our warm feelings towards an academic journal.
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