目的:探讨木犀草素对人肝癌HepG2细胞株侵袭、迁移和黏附能力的影响及其作用机制.方法:采用不同浓度木犀草素处理体外培养的人肝癌HepG2细胞株,Transwell实验检测细胞的侵袭能力,划痕实验检测细胞的迁移能力,黏附实验评价细胞的黏附能力,Westem blot检测E-钙黏蛋白(E-cadherin)、N-钙黏蛋白(N-cadherin)、波形蛋白(vimentin)和Snai1蛋白的表达.结果:木犀草素可明显降低肝癌HepG2细胞的体外侵袭、迁移及黏附能力(P＜0.01),且在一定浓度范围内呈明显量效关系.木犀草素处理肝癌细胞后,上皮细胞标志蛋白E-cadherin表达明显上调,间质细胞标志蛋白N-cadherin和vimentin以及转录因子Snai1表达均明显下调,木犀草素对以上蛋白的调节呈明显浓度依赖性.结论:木犀草素体外具有抑制肝癌HepG2细胞株侵袭、迁移和黏附的作用,其作用机制可能与调控上皮-间质转化有关.%AIM:To investigate the effects of luteolin on invasion,migration and adhesion of human hepatocelluar carcinoma HepG2 cells.METHODS:HepG2 cells were cultured and treated with luteolin at 10,20 and 40 μmol/L respectively.The invasion capability was examined by cell invasion assay.The migration ability was examined by wound healing assay.The adhesion capability was measured by adhesion assay.The protein levels of E-cadherin,N-cadherin,vimentin and Snai1 were determined by Western blot analysis.RESULTS:Luteolin inhibited the invasion,migration and adhesion ability of HepG2 cells in vitro in a dose-dependent manner.After treatment with luteolin,the expression of E-cadherin was increased significantly and the expression of N-cadherin,vimentin and Snai1 were decreased significantly.CONCLUSION:Luteolin inhibits the invasion,migration and adhesion ability of human hepatocelluar carcinoma HepG2 cells.The mechanism may be related to the regulatory effects of luteolin on epithelial-mesenchymal transition.
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