过表达miR-146a通过靶向SOX5抑制胃癌MKN-45细胞增殖和侵袭

Progress of Anatomical Sciences(2021)

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Abstract
目的 探讨过表达miR-146a对胃癌MKN-45细胞增殖、侵袭的影响及可能机制.方法 利用瞬时转染将miR-146a mimics(过表达miR-146a组)和miR-NC(阴性对照组)分别转染胃癌MKN-45细胞,建立过表达miR-146a胃癌MKN-45细胞系,采用MTT法检测转染后MKN-45细胞增殖能力,Transwell实验检测转染后MKN-45细胞侵袭能力.Western blot检测转染后MKN-45细胞中SOX5蛋白表达,通过网站Targetscan预测SOX5是否为miR-146a的靶基因,双荧光素酶实验进行验证.结果 miR-146a过表达抑制MKN-45细胞增殖、侵袭能力,miR-146a过表达使MKN-45细胞中SOX5蛋白表达下降,Targetscan网站分析及双荧光素酶实验证实SOX5为miR-146a的靶基因.结论 过表达miR-146a可以抑制胃癌MKN-45细胞增殖及侵袭能力,其机制可能与下调SOX5的表达有关.
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