【摘要】 目的:探讨mDRA-6对肝癌细胞系SMMC-7721致凋亡作用,及阿霉素与mDRA-6联合协同杀伤效应与机制。方法:常规培养肝癌细胞SMMC-7721,流式细胞术检测细胞表面DR5的表达率。Hoechst 33258染色观察SMMC-7721细胞形态变化;MTT法检测细胞毒性作用;流式细胞术定量分析凋亡细胞率。结果:(1)mDRA-6能够诱导SMMC-7721细胞凋亡,在1.89μg/m l浓度下可杀伤36%的细胞,增加mDRA-6浓度,凋亡作用无明显增加;(2)SMMC-7721细胞对阿霉素敏感,存在浓度依赖性;(3)阿霉素与mDRA-6联合对SMMC-7721细胞具有协同杀伤作用,2μg/m l的mDRA-6与40 ng/m l的阿霉素联合杀伤60%SMMC-7721,Hoechst 33258染色和Annexin V/PI染色证实杀伤作用是通过细胞凋亡实现的。结论:mDRA-6能够诱导肝癌细胞SMMC-7721凋亡,阿霉素与mDRA-6联合具有协同作用。更多还原

【Abstract】 Objective:To determine the sensitivity of SMMC-7721 cells to mDRA-6,the synergistic damage effect of mDRA-6 and adriamycin on human hepatocellular carcimoma cell lines and its possible mechanism.Methods:SMMC-7721 cells were cultured with RPMI1640 medium in regular condition.The morphology was observed by microscope.Cytotoxicity was examined by MTT assay. Apoptosis were detected by flow cytometry.Results:(1)The apoptosis of SMMC-7721 cells could be induced by mDRA-6,1.89 μg/ml of mDRA-6 cound kill 36% of the cells;(2)Concentration-dependent cytotoxicity of adriamycin was exhibited in SMMC-7721 cells;(3)The combination of mDRA-6 and adriamycin exhibited synergistic effect on SMMC-7721 cells.2 μg/ml of mDRA6 and 40 ng/ml of adriamycin killed 60%SMMC-7721.Conclusion:MDRA-6 can induce SMMC-7721 cell apoptosis.The combination of mDRA-6 and adriamycin exhibit synergistic effect on SMMC-7721 cells.更多还原