目的:探讨甘草黄酮(GF9)对肝癌SMMC-7721细胞凋亡的诱导作用及其机制。方法:采用四甲基偶氮唑盐(MTT)比色法检测GF9对人肝癌细胞SMMC-7721细胞生长的影响,Hoechst染色法和电镜观察GF9诱导细胞凋亡的形态变化,流式细胞仪检测GF9诱导的细胞凋亡率,并通过免疫印迹法检测凋亡相关蛋白survivin和pro-caspase-3表达水平的变化。结果:GF9可抑制SMMC-7721细胞增殖,并呈时间剂量效应;400 -滋mol/L GF9可诱导细胞凋亡,呈时间依赖性;随着GF9作用时间的延长,survivin和pro-caspase-3表达下调。结论:GF9能诱导SMMC-7721细胞凋亡,这可能与GF9能够引起抑制凋亡蛋白survivin的下调有关。
Objective:To study the apoptosis of SMMC-7721 cells induced by licoflavone(GF9) and its mechanism. Methods:MTT assay was used to observe the effects on growth inhibition induced by GF9 in SMMC-7721 cells. The morphological changes effect of GF9-induced apoptosis was observed with Hoechst 33258 staining and transmission electron microscope. The percentage of apoptotic cells was analyzed by flow cytometry,and the levels of survivin and pro-caspase-3 proteins were detected by Western blot. Results:GF9 inhibited the SMMC-7721 cells growth in a time-and-dose-dependent manner,400 -滋mol/L GF9 inducing apoptosis in a time-dependent manner. The results of Western blot showed that the expression levels of survivin and pro-caspase-3 were downregulated. Conclusion:The results indicated that GF9 could induce apoptosis of SMMC-7721 cells,and the effect of GF9-induced apoptosis might be related to the downregulation of survivin protein.
张世蘋,周翌婧,刘〓艳,蔡云清.甘草黄酮诱导肝癌SMMC-7721细胞凋亡及其对相关蛋白survivin表达的影响[J].南京医科大学学报(自然科学版),2008,28(3):330-334