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Increased expression of microRNA-378a-5p in acute ethanol exposure of rat cardiomyocytes

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Cell Stress and Chaperones Aims and scope

Abstract

Alcohol abuse is a risk factor for a distinct form of congestive heart failure, known as alcoholic cardiomyopathy (ACM). Here, we investigate how microRNAs may participate in the induction of cardiomyocyte apoptosis associated with ethanol exposure in vitro. Increasing the concentrations of ethanol to primary rat cardiomyocytes resulted in elevated apoptosis assessed by annexin V and propidium iodide staining, and reduced expression of an enzyme for alcohol detoxification aldehyde dehydrogenase 2 (ALDH2). These ethanol effects were accompanied by a substantial elevation of miR-378a-5p. Driving miR-378a-5p overexpression in cardiomyocytes decreased ALDH2. The specific interaction of miR-378a-5p with the 3’UTR of ALDH2 was examined by luciferase reporter assays, and we found that miR-378a-5p activity depends on a complementary base pairing at the 3′-UTR region of ALDH2 mRNA. Finally, ethanol-induced apoptosis in cardiomyocytes was attenuated in the presence of anti-miR378a-5p. Collectively, these data implicate a likely involvement of miR-378a-5p in the stimulation of cardiomyocyte apoptosis through ALDH2 gene suppression, which might play a potential role in the pathogenesis of ACM.

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Acknowledgements

This study was supported by the National Natural Science Foundation of China (NO. 81500210)

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Authors and Affiliations

  1. Department of Cardiovasology, Changhai Hospital, Second Military Medical University, 168 Changhai Road, Shanghai, 200433, China

    Zhongkai Wang, Jingwen Song, Liang Zhang, Songqun Huang, Lizhi Bao, Feng Chen & Xianxian Zhao

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  1. Zhongkai Wang
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  2. Jingwen Song
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  3. Liang Zhang
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Correspondence to Feng Chen or Xianxian Zhao.

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Zhongkai Wang and Jingwen Song contributed equally.

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Wang, Z., Song, J., Zhang, L. et al. Increased expression of microRNA-378a-5p in acute ethanol exposure of rat cardiomyocytes. Cell Stress and Chaperones 22, 245–252 (2017). https://doi.org/10.1007/s12192-016-0760-y

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  • DOI: https://doi.org/10.1007/s12192-016-0760-y

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