扶正抑瘤颗粒药物血清诱导小鼠肝癌细胞凋亡及其机制的研究

目的:研究中药复方扶正抑瘤颗粒药物血清对小鼠肝癌H22细胞凋亡的影响及其作用机制.方法:采用扶正抑瘤颗粒药物血清,温育体外培养的H22小鼠肝癌细胞.流式细胞仪进行细胞周期分析,检测凋亡率;透射电镜观察细胞超微结构变化;链霉亲和素-生物素-过氧化物酶复合物(streptavidin-biotin peroxidase complex,SABC)免疫细胞化学法观察凋亡相关蛋白Bcl-2和Bax的变化.结果:扶正抑瘤颗粒药物血清可影响细胞周期,使小鼠肝癌H22细胞的增殖阻滞在G1/G0期,并可测到凋亡峰,同时可下调Bcl-2蛋白的表达,上调Bax蛋白的表达(扶正抑瘤颗粒药物血清组与空白对照组比较,P<0.05).结论:扶正抑瘤颗粒可通过影响细胞生长周期,调节Bcl-2和Bax蛋白的表达诱导小鼠肝癌细胞凋亡.

Effects of Fuzheng Yiliu Granule-medicated serum on apoptosis of liver cancer cells from mice and its mechanism

OBJECTIVE: To study the effects of Fuzheng Yiliu Granule (FZYLG)-medicated serum on apoptosis of liver cancer cells H22 from mice and its mechanism. METHODS: Liver cancer cells H22 from mice were incubated in culture media containing sera from rabbits medicated with different doses of FZYLG. Flow cytometry was used to examine the cell cycle and analyze the apoptotic rate of the H22 cells. The morphological changes of the H22 cells were observed by transmission electron microscope and the apoptosis related proteins Bcl-2 and Bax were examined by streptavidin-biotin peroxidase complex (SABC) method. RESULTS: FZYLG-medicated serum could influence the cell cycle and stop the proliferation of H22 cells at the G(1)/G(0) phase with apoptotic peak being detected. In culture media with FZYLG-medicated sera, the expression of Bcl-2 decreased while that of Bax increased as compared with that in culture medium with non-medicated serum (P<0.05). CONCLUSION: FZYLG-medicated serum can induce apoptosis of the liver cancer cells H22 by influencing the cell cycle, down-regulating the expression of Bcl-2 and up-regulating the expression of Bax.