整合素αvβ6在胃癌AGS细胞增殖和凋亡中的作用

Role of integrin αvβ6 in proliferation and apoptosis of gastric cancer AGS cells

目的:研究整合素αvβ6在胃癌AGS细胞增殖和凋亡中的作用。方法:用单克隆抗体10D5封闭AGS细胞表面αvβ6功能,并采用10D5的阴性对照剂鼠IgG2a处理细胞作为阴性对照。MTT法检测细胞增殖,流式细胞仪检测细胞凋亡,Westernblot检测caspase-3蛋白的表达情况。结果:用10D5封闭αvβ6后,10D5组AGS细胞的存活率较对照组和IgG2a组下降,而凋亡率和caspase-3的表达水平则增加,差异均有统计学意义(P<0.05)。IgG2a组与对照组相比差异无统计学意义(P>0.05)。结论:整合素αvβ6表达促进胃癌AGS细胞增殖并抑制其凋亡。

Objective： To explore the role of integrin αvβ6 in proliferation and apoptosis of gastric cancer AGS cells. Methods： Gastric cancer AGS cells were treated with αvβ6 monoclonal antibody 10D5 or the negative control mouse immunogloblins IgG2a. Cell viability was measured by MTT assay, cell apoptosis was detected by FCM, and caspase-3 activity was examined by Western blot. Results： Compared with the control and IgG2a group, the apoptotic rate and caspase-3 activity of AGS cells treated with 10D5 increased, meanwhile cells survival rate decreased. There were significant differences of the indexes between the 10D5 group and the other two groups （P〈0.05）. There is no obvious difference between the IgG2a group and the control group （P〉0.05）. Conclusion： Integrin αvβ6 plays an important role in the proliferation and apoptosis of gastric cancer AGS cells.