PMID- 31017665 OWN - NLM STAT- Publisher LR - 20240227 IS - 1097-4652 (Electronic) IS - 0021-9541 (Linking) DP - 2019 Apr 24 TI - Downregulation of miRNA-30a enhanced autophagy in osthole-alleviated myocardium ischemia/reperfusion injury. LID - 10.1002/jcp.28556 [doi] AB - Osthole could alleviate myocardial ischemia/reperfusion (I/R) injury. However, the underlying mechanism remains unclear. In this study, we explored whether microRNA (miR)-30a and its target autophagy marker Beclin-1 involved in the osthole protective role in the rat and cells myocardial I/R injury models. The myocardial damages including increases in myocardial collagen content and cell apoptosis in I/R injury model were observed by Masson's Trichrome Staining and terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) assays. Osthole significantly inhibited the myocardial damages. Osthole inhibited the induction of miR-30a expression by I/R in rat and hypoxia/reoxygenation (H/R) in myocardial cells. After knockdown, the expression of miR-30a by miR-30a inhibitor, H/R induced cell apoptosis was significantly inhibited. The level of Beclin-1 expression and ratio of LC3BII/LC3BI were inhibited by I/R in rat and H/R in myocardial cells, whereas osthole significantly increased them. Knockdown of miR-30a significantly upregulated the Beclin-1 expression and ratio of LC3BII/LC3BI. Inhibition of autophagy by 3-MA significantly reversed the protective role of osthole in H/R myocardial cell. Therefore, we concluded that the mechanism by which osthole alleviate myocardial I/R injury may be achieved by enhancing the autophagy partially via inhibiting the expression of miR-30a. CI - (c) 2019 Wiley Periodicals, Inc. FAU - Liu, Shengzhong AU - Liu S AD - Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China. AD - Cardiac Surgery Center, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China. FAU - He, Ying AU - He Y AD - Psychosomatic Medicine Center, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China. FAU - Shi, Jun AU - Shi J AD - Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China. FAU - Liu, Lulu AU - Liu L AD - Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China. FAU - Ma, Hao AU - Ma H AD - Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China. FAU - He, Li AU - He L AD - Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China. FAU - Guo, Yingqiang AU - Guo Y AUID- ORCID: 0000-0001-8385-5116 AD - Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China. LA - eng GR - 2018SZ0266/Sichuan Science and Technology Department/ PT - Journal Article DEP - 20190424 PL - United States TA - J Cell Physiol JT - Journal of cellular physiology JID - 0050222 OTO - NOTNLM OT - autophagy OT - miR-30a OT - myocardial ischemia/reperfusion injury OT - osthole EDAT- 2019/04/25 06:00 MHDA- 2019/04/25 06:00 CRDT- 2019/04/25 06:00 PHST- 2018/12/25 00:00 [received] PHST- 2019/02/23 00:00 [revised] PHST- 2019/03/06 00:00 [accepted] PHST- 2019/04/25 06:00 [entrez] PHST- 2019/04/25 06:00 [pubmed] PHST- 2019/04/25 06:00 [medline] AID - 10.1002/jcp.28556 [doi] PST - aheadofprint SO - J Cell Physiol. 2019 Apr 24. doi: 10.1002/jcp.28556.