The mechanism of miR-26a inhibiting gastric cancer cells proliferation / 中国现代医生

ABSTRACT

Objective To explicit the expression and role of miR-26a in gastric cancer tissues, thus to reveal molecular mechanism that miR-26a functions in gastric cancer cells. Methods The qRT-PCR was conducted for detect the ex-pression of miR-26a in 71 cases of gastric cancers. AGS cells were transfected with miR-26a mimics, then Western blot was performed to detect the expressions of MTDH protein. The proliferation ability of AGS cells evaluated by MTT assy. Results qRF-PCR showed that miR-26a was down-regulated 0.44 times in 71 cases of gastric cancer tissues. Western blot showed that the expressions of MTDH protein was inhibited by restored miR-26a or MTDH siRNA in AGS cells. Overexpression of miR-26a or MTDH siRNA inhibited the proliferation of AGS cells. Their OD values of transfected miR-26a mimics and MTDH siRNA were (0.158±0.006),(0.201±0.006) respectively, and their OD values of transfected control were (0.515±0.032),(0.479±0.028) respectively,there were statistically significance(P<0.05). Con-clusion miR-26a suppresses cell proliferation by targeting MTDH in gastric cancer.