Paeoniflorin inhibits doxorubicin-induced cardiomyocyte apoptosis by downregulating microRNA-1 expression

Li,Jian‑Zhe; Tang,Xiu‑Neng; Li,Ting‑Ting; Liu,Li‑Juan; Yu,Shu‑Yi; Zhou,Guang‑Yu; Shao,Qing‑Rui; Sun,Hui‑Ping; Wu,Cheng; Yang,Yang

doi:10.3892/etm.2016.3182

Paeoniflorin inhibits doxorubicin-induced cardiomyocyte apoptosis by downregulating microRNA-1 expression

Authors:
- Jian‑Zhe Li
- Xiu‑Neng Tang
- Ting‑Ting Li
- Li‑Juan Liu
- Shu‑Yi Yu
- Guang‑Yu Zhou
- Qing‑Rui Shao
- Hui‑Ping Sun
- Cheng Wu
- Yang Yang
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Affiliations: Department of Pharmacy, Ruikang Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi 530011, P.R. China, Department of Pharmacy, People's Hospital of Xishuangbanna Dai Autonomous Prefecture, Jinghong, Yunnan 666100, P.R. China, Department of Pharmacy, Jiangxi Provincial Cancer Hospital, Nanchang, Jiangxi 330029, P.R. China, Advanced Research Center, Central South University, Changsha, Hunan 410078, P.R. China, Department of Anesthesia, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan 410006, P.R. China
Published online on: March 24, 2016 https://doi.org/10.3892/etm.2016.3182
Pages: 2407-2412

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Abstract

Doxorubicin (DOX) is an effective anthracycline anti-tumor antibiotic. Because of its cardiotoxicity, the clinical application of DOX is limited. Paeoniflorin (PEF), a monoterpene glucoside extracted from the dry root of Paeonia, is reported to exert multiple beneficial effects on the cardiovascular system. The present study was designed to explore the protective effect of PEF against DOX‑induced cardiomyocyte apoptosis and the underlying mechanism. In cultured H9c2 cells, PEF (100 µmol/l) was added for 2 h prior to exposure to DOX (5 µmol/l) for 24 h. Cell viability, creatine kinase activity, cardiomyocyte apoptosis, intracellular reactive oxygen species (ROS) levels, and the expression of microRNA‑1 (miR‑1) and B‑cell lymphoma 2 (Bcl‑2) were measured following treatment with PEF and/or DOX. The results showed that treatment with DOX notably induced cardiomyocyte apoptosis, concomitantly with enhanced ROS generation, upregulated miR‑1 expression and downregulated Bcl‑2 expression. These effects of DOX were significantly inhibited by pretreatment of the cells with PEF. These results suggest that the inhibitory effect of PEF on DOX-induced cardiomyocyte apoptosis may be associated with downregulation of miR-1 expression via a reduction in ROS generation.

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