MicroRNA-19b-1 reverses ischaemia-induced heart failure by inhibiting cardiomyocyte apoptosis and targeting Bcl2 l11/BIM

  • Wenbo Yang
  • Yanxin Han
  • Chendie Yang
  • Yanjia Chen
  • Weilin Zhao
  • Xiuxiu Su
  • Ke YangEmail author
  • Wei JinEmail author
Original Article


Ischaemia induces cardiac apoptosis and leads to a loss of cardiac function and heart failure after myocardial infarction. MicroRNA-19b-1 (miR-19b-1), a key member of the miR-17/92 cluster, plays crucial roles in inhibiting apoptosis. However, the role of miR-19b-1 in ischaemia-induced heart failure remains unknown. In this study, ischaemia resulted in cardiac apoptosis and the suppression of miR-19b-1 expression, whereas miR-19b-1 overexpression inhibited ischaemia-induced cardiac apoptosis in vivo and in vitro. Moreover, miR-19b-1 not only attenuated the infarct size but also ameliorated heart failure after myocardial infarction, including the changes in the left ventricular ejection fraction and volume load. Mechanically, miR-19-1 targeted and downregulated the mRNA and protein expression of Bcl2l11/BIM, a pro-apoptotic gene of the Bcl-2 family. Together, these results revealed an essential role of miR-19b-1 in ischaemia-induced heart failure.


MicroRNA-19b-1 Heart failure Myocardial infarction Cardiac apoptosis Bcl2-like 11 



This work was supported by the National Natural Science Foundation of China (81670266 and 81770384), the Science and Technology Commission of Shanghai Municipality (17140902500) and Joint Funds for the innovation of science and Technology, Fujian province (2017Y9007).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer Japan KK, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Cardiology, Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghaiPeople’s Republic of China
  2. 2.Institute of Cardiovascular DiseaseShanghai Jiao Tong University School of MedicineShanghaiPeople’s Republic of China

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