Objective To investigate the influence of overexpression of miR-195 on cell proliferation in glioma T98G cells and explore the function of miR-195 in glioma. Methods T98G cells with lower expression of miR-195 were transfected with synthesized miR-195 mimics, then MTT assay, flow cytometry and TUNEL assay were performed to analyse the alterations of cellular phenotype, Western blot was performed to examine the expression level of BCL-2. Results Mature miR-195 increased significantly after miR-195 mimics transfection (P<0. 05). Overexpression of miR-195 induced significant cell proliferation suppression, and up-regulated miR-195 promoted apoptosis and reduced the expression of BCL-2 protein in T98G cells. Conclusions Overexpression of miR-195 significantly promotes apoptosis of T98G cells, suggesting that miR-195 may serve as a potential therapeutic agent for glioma.%目的 检测过表达miR-195对人神经胶质瘤细胞T98G增殖的影响,探讨miRNA-195在胶质瘤发病过程中可能机制.方法 用合成的miR-195模拟物,转染miR-195表达水平较低的人神经胶质瘤细胞T98G,用MTT、流式细胞术和TUNEL法分别检测T98G细胞增殖、细胞周期和凋亡,用Western blot检测细胞BCL-2的表达.结果 miR-195模拟物转染T98G后,成熟miR-195明显升高(P＜0.05).在T98G中过表达miR-195后,可明显抑制细胞增殖,过表达miR-195能促进T98G细胞的凋亡和下调细胞BCL-2的表达.结论 过表达miR-195能显著促进T98G细胞凋亡,提示miR-195可能对胶质瘤的治疗起作用.
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