Myocardin and Stat3 act synergistically to inhibit cardiomyocyte apoptosis.
Myocardin and Stat3 act synergistically to inhibit cardiomyocyte apoptosis.
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Myocardin 和 Stat3 协同作用抑制心肌细胞凋亡
DOI:
10.18632/oncotarget.20450
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发表时间:
2017-11-21
期刊:
影响因子:
--
通讯作者:
Zhang TC
中科院分区:
文献类型:
--
作者:
Xiang Y;Liao XH;Li JP;Li H;Qin H;Yao A;Yu CX;Hu P;Guo W;Gu CJ;Zhang TC
Signal transducer and activator of transcription 3 (Stat3) and Myocardin regulate cardiomyocyte differentiation, proliferation, and apoptosis. We report a novel aspect of the cellular function of Myocardin and Stat3 in the regulation of cardiomyocyte apoptosis. Myocardin and Stat3 showed anti-apoptotic function by increasing the expression of Bcl-2 while reducing expression of the pro-apoptotic genes Bax, Apaf-1, caspase-9, and caspase-3. Moreover, myocardin/Stat3-mediated activation of Bcl-2 and Mcl-1 transcription is contingent on the CArG box. Myocardin and Stat3 synergistically inhibited staurosporine-induced cardiomyocyte apoptosis by up-regulating expression of anti-apoptotic Bcl-2 and Mcl-1 in neonatal rat cardiomyocytes. These results describe a novel anti-apoptotic Myocardin/Stat3 signaling pathway operating during cardiomyocyte apoptosis. This provides a molecular explanation for cardiomyocyte apoptosis inhibition as a critical component of myocardial protection.
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