基础医学与临床 ›› 2012, Vol. 32 ›› Issue (7): 783-787.

• 研究论文 • 上一篇    下一篇

miR-195 促进神经胶质瘤细胞T98G凋亡

赵志强1,阴彬2,彭小忠3   

  1. 1. 中国医学科学院基础医学研究所 北京协和医学院基础学院
    2. 中国医学科学院基础医学研究所 北京协和医学院基础学院
    3. 中国医学科学院 基础医学研究所 北京协和医学院 基础学院 医学分子生物学国家重点实验室
  • 收稿日期:2012-05-07 修回日期:2012-05-24 出版日期:2012-07-05 发布日期:2012-06-20
  • 通讯作者: 彭小忠 E-mail:pengxiaozhong@pumc.edu.cn
  • 基金资助:
    骨髓间充质干细胞瘤化中STAT3信号通路过度激活的作用机制与规避研究

Overexpression of miR-195 promotes apoptosis in glioma T98G cells

1,Bin YIN2,Xiao-zhong PENG   

  • Received:2012-05-07 Revised:2012-05-24 Online:2012-07-05 Published:2012-06-20
  • Contact: Xiao-zhong PENG E-mail:pengxiaozhong@pumc.edu.cn

摘要: 摘要: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,利用MTT、流式细胞术和TUNEL法检测T98G细胞增殖、细胞周期及凋亡改变情况,利用western blot检测细胞BCL-2的表达变化。 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,流式细胞术检测发现细胞周期没有明显改变,而TUNEL实验表明过表达miR-195能促进T98G细胞的凋亡, western blot检测表明过表达miR-195会下调细胞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。

关键词: miR-195, T98G细胞, 细胞增殖, 凋亡, BCL-2

Abstract: Abstract: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. Method T98G cells containing lower expression level of miR-195 were transfected with synthesized miR-195 mimics , then MTT assay, flow cytometry and TUNEL assay were performed to analysis the alterations of cellular phenotype,western blot was performed to examine the expression level of BCL-2. Result Mature mir-195 increased significantly after miR-195 mimics transfection (P<0.05). Overexpression of miR-195 induced significant cell proliferation suppression. Flow cytometry results showed that up-regulated miR-195 produced little influence on cell cycle, while TUNEL assay indicated that miR-195 promoted apoptosis in T98G cells. Western blot result showed that BCL-2 was reduced after by miR-195 mimics. Conclusion Overexpression of miR-195 significantly promoted cell apoptosis in T98G cells, suggesting that miR-195 may function in glioma treatment.

Key words: miR-195, T98G cells, cell proliferation, apoptosis, BCL-2

中图分类号: