下调miR-421靶向Sirt3调控HepG2肝癌细胞生长和侵袭的机制研究

被引:2
|
作者
张寅斌
陈银溪
马宇光
刘棣
梁亮
王梦
孙诗雨
张淑群
机构
[1] 西安交通大学第二附属医院内科
关键词
肝癌; miR-421; Sirt3; 侵袭; 细胞生长;
D O I
暂无
中图分类号
R735.7 [肝肿瘤];
学科分类号
摘要
目的探讨下调miR-421靶向Sirt3调控肝癌细胞生长和侵袭的机制。方法 RT-PCR方法测定肝癌细胞和正常肝细胞中miR-421表达变化。在肝癌细胞中转染miR-421 inhibitor,MTT测定细胞增殖变化,Transwell小室检测细胞侵袭和迁移能力变化,Western blotting检测细胞中MMP-9和MMP-2蛋白表达变化。在线靶基因预测软件发现Sirt3可能是miR-421的靶基因,荧光素酶报告系统鉴定靶向关系。在肝癌细胞中共转染miR-421 inhibitor、Sirt3 siRNA,利用上述方法测定细胞增殖、侵袭、迁移能力和MMP-9、MMP-2蛋白表达水平。结果 miR-421在肝癌细胞中的表达水平高于正常肝细胞。miR-421 inhibitor转染后的肝癌细胞增殖能力下降,细胞侵袭和迁移能力降低,细胞中MMP-9和MMP-2蛋白表达减少。Sirt3受到miR-421的靶向负调控作用。Sirt3 siRNA能够逆转miR-421 inhibitor对肝癌细胞增殖、侵袭、迁移和MMP-9、MMP-2表达的抑制作用。结论下调miR-421靶向Sirt3抑制HepG2肝癌细胞生长和侵袭。
引用
收藏
页码:923 / 927+932 +932
页数:6
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