TRIM27 protects against cardiac ischemia-reperfusion injury by suppression of apoptosis and inflammation via negatively regulating p53

被引:19
作者
Li, Yan [1 ]
Meng, Qing [2 ]
Wang, Ling [2 ]
Cui, Yongjian [2 ]
机构
[1] Xinjiang Med Univ, Emergency Dept, Annex Hosp 6, Urumqi 830002, Peoples R China
[2] Xinjiang Med Univ, Dept Gen Med, Annex Hosp 6, Urumqi 830002, Peoples R China
关键词
Myocardial ischemia/reperfusion; TRIM27; Apoptosis; Inflammation; p53; MYOCARDIAL ISCHEMIA/REPERFUSION INJURY; STRESS; CELLS;
D O I
10.1016/j.bbrc.2021.03.061
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Myocardial ischemia/reperfusion (MI/R) has high morbidity and mortality worldwide, but the underlying mechanisms have not been entirely understood. TRIM27 is one of the Tri-domain proteins (TRIM) family proteins with crucial roles in numerous life processes. In the study, we attempted to explore the effects of heart-conditional knockout of TRIM27 (TRIM27(cKO)) on MI/R progression both in vivo and in vitro. Our results showed that TRIM27 was strongly decreased in murine hearts with MI/R injury and in cardiomyocytes with hypoxic reoxygenation (HR) treatment. TRIM27(cKO) could further accelerate the infarction size and cardiac dysfunction in MI/R mice. Function study demonstrated that heart-selective TRIM27 deletion significantly aggravated apoptosis in hearts of MI/R mice through enhancing Caspase3 activities. Moreover, inflammatory response due to MI/R injury was remarkably exacerbated in TRIM27(cKO) mice by strengthening nuclear factor 0B (NF -0B) activation. In addition, p53 expression levels were dramatically up-regulated in hearts of MI/R mice and cardiomyocytes with HR treatment, which were further aggravated by TRIM27(cKO).Intriguingly, we found that TRIM27 could interact with p53 and promote its ubquitination. Of note, suppressing p53 remarkably ameliorated TRIM27(cKO)-intensified apoptotic cell death and inflammation in HR-treated cardiomyocytes. Taken together, all these findings revealed that TRIM27/p53 axis may be involved in MI/R progression, and thus could be a therapeutic target for this disease treatment. (C) 2021 Published by Elsevier Inc.
引用
收藏
页码:127 / 134
页数:8
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