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激活miR-101-3p/EZH2通路增敏索拉非尼抗肝癌HepG2细胞的效果

Journal of third military medical university(2020)

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Abstract
目的 探讨激活miR-101-3p/EZH2通路在增敏索拉非尼抗肝癌HepG2细胞中的意义.方法 将人肝癌细胞HepG2分成对照组(DMSO)和索拉非尼处理组(10 μmol/L),处理24 h后,定量PCR检测miR-101-3p表达水平变化;生物信息学预测miR-101-3p结合的靶基因;在肝癌细胞中过表达miR-101-3p后Western blot和定量PCR检测zeste同源蛋白2增强子(enhancer of zeste homolog 2 protein,EZH2)表达水平变化;双荧光素酶报告基因实验验证miR-101-3p和EZH2的靶向关系;Western blot检测索拉非尼处理对EZH2表达水平的影响;在HepG2细胞中过表达miR-101-3p或添加EZH2抑制剂EPZ-6438后联合索拉非尼处理,CCK-8检测对HepG2细胞存活的影响.结果 索拉非尼处理后HepG2细胞中miR-101-3p表达水平显著降低(P<0.05);miR-101-3p可在HepG2细胞中下调EZH2的表达(P<0.05);miR-101-3p与EZH2 mRNA 3'-UTR存在直接结合(P<0.05);索拉非尼处理后HepG2细胞中EZH2表达水平显著升高(P<0.05);过表达miR-101-3p或EZH2抑制剂EPZ-6438均可增加索拉非尼对HepG2细胞杀伤的敏感性(P<0.05).结论 激活miR-101-3p/EZH2通路可增敏索拉非尼的抗肝癌细胞HepG2效果.
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Key words
microrna,sorafenib,drug resistance,hepatoma,enhancer of zeste homolog 2
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