Max作用蛋白1⁃0在氧糖剥夺诱导SH⁃SY5Y细胞凋亡中的作用
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江苏省妇幼健康科研项目(F201711)


Roles of Mxi1⁃0 in apoptosis of SH⁃SY5Y cells induced by oxygen and glucose deprivation
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    摘要:

    目的:探讨Max作用蛋白1-0(max action protein 1-0,Mxi1-0)在氧糖剥夺(oxygen-glucose deprivation,OGD)诱导SH-SY5Y细胞凋亡中的作用。方法:利用Western blot检测SH-SY5Y细胞在OGD条件下Mxi1-0和线粒体自噬相关蛋白LC3-Ⅱ、p62、Tom20的表达水平。Mxi1-0 siRNA转染SH-SY5Y细胞,以CCK-8法和Annexin V/PI染色法检测Mxi1-0在OGD诱导细胞凋亡中的作用。结果:OGD条件下,SH-SY5Y细胞中Mxi1-0的表达先上升后下降。OGD处理使线粒体自噬相关蛋白LC3-Ⅱ表达升高,p62和Tom20蛋白表达下降。OGD条件下,Mxi1-0沉默可抑制OGD诱导的线粒体自噬,增强OGD诱导的SH-SY5Y细胞凋亡。结论:Mxi1-0通过增强线粒体自噬拮抗OGD诱导的SH-SY5Y细胞凋亡。

    Abstract:

    Objective:This study aims to investigate the role of max action protein 1-0(Mxi1-0) in SH-SY5Y cell apoptosis induced by oxygen-glucose deprivation(OGD). Methods:The expression levels of Mxi1-0 and mitophagy related proteins LC3-Ⅱ,p62,Tom20 in SH-SY5Y cells under OGD conditions were detected by Western blot. Mxi1-0 siRNA was tranfected into SH-SY5Y cells. The expression of Mxi1-0 and mitophagy related proteins(LC3-Ⅱ,p62,Tom20) were detected in SH-SY5Y cells under OGD using Western blot. The role of Mxi1-0 in OGD-induced apoptosis was detected using CCK-8 method and Annexin V/PI staining. Results:The expression of Mxi1-0 increased firstly and then decreased in SH-SY5Y cells after OGD treatment. The expression of mitophagy related protein LC3-Ⅱ increasesed and the expression of p62 and Tom20 proteins decreased after OGD treatment. Under OGD conditions,Mxi1-0 silence reduced mitophagy in SH-SY5Y induced by OGD,and increase the apoptosis of SH-SY5Y induced by OGD. Conclusion:Mxi1-0 antagonizes OGD induced apoptosis of SH-SY5Y cells by enhancing mitochondrial autophagy.

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聂 萍,胡圳圳,袁 雅,吴伟玲,郑大同. Max作用蛋白1⁃0在氧糖剥夺诱导SH⁃SY5Y细胞凋亡中的作用[J].南京医科大学学报(自然科学版),2020,(6):816-820

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  • 收稿日期:2019-09-28
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  • 在线发布日期: 2020-07-07
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