MicroRNA-497 Inhibits Cardiac Hypertrophy by Targeting Sirt4.

Yimin Xiao, Xiaofei Zhang, Shihao Fan, Guanghao Cui, Zhenya Shen

PloS one 2016

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Cardiac hypertrophy is an adaptive enlargement of the myocardium in response to overload pressure of heart. From abundant studies, a conclusion is drawn that many microRNAs (miRNAs) are associated with cardiac hypertrophy and heart failure. To investigate the role of microRNA-497 (miR-497) in myocardial hypertrophy, two models were established in this study from cell level to integral level. Cardiac hypertrophy was induced by using angiotensin Ⅱ (Ang Ⅱ) in vitro and was created by transverse abdominal aortic constriction (TAC) in vivo. There was a significant decrease expression of miR-497 in cardiac hypertrophy models. Moreover, overexpression of miR-497 inhibited myocardial hypertrophy both in vitro and in vivo without heart function variation. In addition, luciferase reporter assays demonstrated that Sirt4 was a direct target gene of miR-497. Taking together, our study indicates that miR-497 modulates cardiac hypertrophy by targeting Sirt4 and may serve as a potential therapeutic substance in the course.

Citation

Yimin Xiao, Xiaofei Zhang, Shihao Fan, Guanghao Cui, Zhenya Shen. MicroRNA-497 Inhibits Cardiac Hypertrophy by Targeting Sirt4. PloS one. 2016;11(12):e0168078