期刊
FRONTIERS IN PHARMACOLOGY
卷 13, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fphar.2022.873614
关键词
ELA-11; doxorubicin; heart failure; apoptosis; oxidative stress
资金
- National Natural Science Foundation of China [81873540]
- Jiangsu provincial key research and development program [BE2019752]
- Changning Science and Technology Commission [CNKW2020Y06]
- Technology Transfer and Promotion Project of School of Medicine, Shanghai Jiaotong University [ZT202013]
ELA-11 alleviated heart injury induced by DOX and inhibited apoptosis in cardiac tissues by regulating the PI3K/AKT and ERK/MAPK signaling pathways. It also protected cardiomyocytes from oxidative stress-induced apoptosis by interacting with the APJ receptor.
Increasing evidence revealed that apoptosis and oxidative stress injury were associated with the pathophysiology of doxorubicin (DOX)-induced myocardial injury. ELABELA (ELA) is a newly identified peptide with 32 amino acids, can reduce hypertension with exogenous infusion. However, the effect of 11 residue furn-cleaved fragment (ELA-11) is still unclear. We first administrated ELA-11 in DOX-injured mice and measured the cardiac function and investigated the effect of ELA-11 in vivo. We found that ELA-11 alleviated heart injury induced by DOX and inhibited cardiac tissues from apoptosis. In vitro, ELA-11 regulated the sensitivity towards apoptosis induced by oxidative stress with DOX treatment through PI3K/AKT and ERK/MAPK signaling pathway. Similarly, ELA-11 inhibited oxidative stress-induced apoptosis in cobalt chloride (CoCl2)-injured cardiomyocytes. Moreover, ELA-11 protected cardiomyocyte by interacting with Apelin receptor (APJ) by using 4-oxo-6-((pyrimidin-2-ylthio) methyl)-4H-pyran-3-yl 4-nitrobenzoate (ML221). Hence, our results indicated a protective role of ELA-11 in oxidative stress-induced apoptosis in DOXinduced myocardial injury.
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