抗人stathmin单克隆抗体及其联合紫杉醇对人乳腺癌细胞的生长抑制作用

目的：探讨抗人stathmin单克隆抗体、紫杉醇分别单用或联用对乳腺癌细胞系MCF-7的生长抑制及促凋亡作用。方法：以不同浓度的抗人stathmin单克隆抗体、紫杉醇分别组成单药组和联合用药组,另设不加药的空白对照组,分别作用于MCF-7细胞24、48、72、96h,观察细胞数量和形态的变化。MTT法检测单克隆抗体、紫杉醇单用组、联用组以及对照组对MCF-7细胞的增殖抑制作用,用流式细胞仪通过AnnexinV/PI双染法检测各组细胞凋亡率的改变。结果：不同浓度的各实验组作用后细胞数量明显减少、形态不规则,部分细胞核固缩和胞质减少,而对照组细胞生长状态良好。抗人stathmin单克隆抗体、紫杉醇单用与联用均能抑制MCF-7细胞增殖,呈剂量-时间依赖效应,联用组细胞抑制率较单药组明显增高,差异具有统计学意义（P〈0.05）,两药联用有交互效应（P〈0.05）。抗人stathmin单克隆抗体、紫杉醇单用与联用均能诱导MCF-7细胞凋亡,联合组更为明显（P〈0.05）。结论：抗人stathmin单克隆抗体、紫杉醇单用与联用均能抑制MCF-7细胞增殖,诱导其凋亡;两药联合作用于人乳腺癌MCF-7细胞具有协同作用。

Effects of monoclonal antibodies against human stathmin combined paclitaxel on proliferation of human breast carcinoma cell line MCF-7

AIM：To investigate the effects of monoclonal antibodies against stathmin combined paclitaxel on the proliferation of MCF-7 cells.METHODS：MCF-7 cells were treated with monoclonal antibodies against stathmin,paclitaxel alone or their combination,with theuntreated cells used as the control,24,48,72,96 hours later,the cell growth condition was observed by invert microscope and inhabitation rate was studied by MTT assay ;The apoptosis was analyzed by flow cytometry with Annexin V/PI.RESULTS：The population decreased and shape,size changed after treating with different concentration of experimental groups.Monoclonal antibodies against stathmin and paclitaxel used alone or in combination both inhibited the proliferation of MCF-7 cells,the inhibition ratio of their combination was more higher（P0.05）,and a synergistic effect of the two agents was noted in their combined action（P0.05）.Combined treatment of the cells resulted in significantly higher apoptosis rate than that in the other groups（P0.05）.CONCLUSION：Monoclonal antibodies against stathmin and paclitaxel used alone or in combination both can inhibit proliferation of MCF-7 cells and induce apoptsis.A synergistic effect is observed between the monoclonal antibodies against stathmin and paclitaxel in their inhibition of MCF-7 cell proliferation.