酸性环境诱导肝癌HepG2细胞EMT  

Acid conditions induces EMT of hepatocellular carcinoma HepG2 cells

作　　者：周春芳[1] 赵珊珊[2] 孙泽群[1] 吴军[1] 查火龙[1] 袁雅红[2] 

机构地区：[1]湖北医药学院附属十堰市人民医院消化内科,十堰442000 [2]湖北医药学院附属太和医院胚胎干细胞研究湖北省重点实验室

出　　处：《实用肿瘤学杂志》2017年第3期199-204,共6页Practical Oncology Journal

基　　金：十堰市科学技术研究与开发项目计划(16Y01)

摘　　要：目的研究酸性环境对肝癌HepG2细胞上皮细胞间质转化(EMT)的影响。方法分别在酸性和碱性条件下培养HepG2细胞,观察细胞形态的区别。划痕实验检测两组细胞的迁移能力,Matrigel侵袭实验检测细胞的侵袭能力。RT-PCR检测两组细胞EMT相关基因mRNA的表达水平,Western blot检测两组细胞EMT相关基因蛋白的表达水平。结果酸性条件下培养的HepG2细胞形态明显从上皮型转变为间质型;酸性条件下HepG2细胞的迁移能力明显强于碱性条件下;酸性条件下HepG2细胞穿越Matrigel的数量明显多于碱性条件下;酸性条件下HepG2细胞EMT相关基因Vimentin、Slug、Snail及Zeb1的mRNA表达以及EMT相关蛋白Vimentin和MMP9的表达强度均明显高于碱性条件下。结论酸性环境能诱导肝癌HepG2细胞EMT的发生。Objective The objective of this study was to investigate the effect of acidic conditions on ep-ithelial mesenchymal transition（ EMT） of HepG2 cells. Methods HepG2 cells were cultured under acidic and al-kaline conditions to observe the difference of cell morphology. Wound healing assays were performed to detect the migration ability of the two groups. Matrigel invasion assays were used to detect the invasive ability of the cells. The expression of EMT - related genes at mRNA level was detected by RT - PCR. The expression level of EMT - related gene protein was detected by Western blot. Results The morphology of HepG2 cells was changed from epithelium to interstitial type under acid conditions. The migration ability of HepG2 cells under acidic condition was stronger than that of alkaline conditions. The number of HepG2 cells crossing Matrigel was higher than that of alkaline condition. The mRNA expression of Vimentin,Slug, Snail and Zebl related to EMT and the protein ex-pression of Vimentin and MMP9 related to EMT in HepG2 cells were significantly higher than those under alka-line condition. Conclusion The acid conditions can induce the occurrence of EMT in HepG2 cells.

关 键 词：酸性环境 上皮间质转化 肝癌 HEPG2 

分 类 号：R735.7[医药卫生—肿瘤]