Period 2-Induced Activation of Autophagy Improves Cardiac Remodeling After Myocardial Infarction.

Period 2-Induced Activation of Autophagy Improves Cardiac Remodeling After Myocardial Infarction.
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第 2 期诱导的自噬激活可改善心肌梗死后的心脏重塑。

DOI:
10.1089/hum.2019.146
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发表时间:
2019-12
期刊:
HUM GENE THER CL DEV
影响因子:
--
通讯作者:
Yuan-Yuan Sun
Yuan-Yuan Sun
中科院分区:
其他
文献类型:
--
作者:
Xin-Yu Zhang;Lin Wang;Wen-Jiang Yan;Xiao-Ting Lu;Xin-Yun Li;Yuan-Yuan Sun

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越来越多的证据表明,心肌梗死(MI)的发病具有明显的昼夜节律性。临床研究表明,MI发生在清晨预后差。但其机制尚不清楚。在这里,我们表明,在小鼠心脏中,第二阶段(per2)的表达水平在清晨比中午低,而在H9C2细胞和大鼠心肌细胞中,提高per2的表达增加了自噬水平。进一步的研究表明,心肌梗死后per2的过表达通过增加自噬来改善心功能。总之,这项研究确定,生物钟每2可能是一个调节MI。
Accumulating evidences indicate that onset of myocardial infarction (MI) shows obvious circadian rhythmicity. Clinical studies have shown that MI occurred in the early morning has a poor prognosis. But the mechanisms involved still unknown. Here we show that the expression level of the Period 2 (per2), in the heart of mice is lower in the early morning than in the noon, while raising the expression of per2 in H9C2 cells and rat cardiomyocytes increased autophagy levels. Further studies indicated that overexpression of per2 after MI improved cardiac function through increasing the autophagy. In summary, this study identifies that circadian clock per2 may be a regulator of MI.
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