J4

• 基础医学 • 上一篇    下一篇

蒺藜总皂苷对H2O2诱导PC12细胞凋亡的保护作用

姜恩平,李 红,纪影实,杨世杰   

  1. 吉林大学基础医学院药理学教研室,吉林 长春 130021
  • 收稿日期:2007-10-31 修回日期:1900-01-01 出版日期:2008-03-28 发布日期:2008-03-28
  • 通讯作者: 杨世杰

Protective effect of gross saponin tribulus terrestris on apoptosis of PC12 cells induced by H2O2

JIANG En-ping,LI Hong,JI Ying-shi,YANG Shi-jie   

  1. Department of Pharmacology,School of Basic Medical Sciences,Jilin University,Changchun 130021,China
  • Received:2007-10-31 Revised:1900-01-01 Online:2008-03-28 Published:2008-03-28
  • Contact: YANG Shi-jie

摘要: 目的: 探讨蒺藜总皂苷(GSTT)对过氧化氢(H2O2) 诱导大鼠肾上腺嗜铬细胞瘤细胞(PC12) 凋亡的保护作用及其机制。方法:PC12细胞分为对照组、模型组及蒺藜总皂苷高(GSTT1)、低(GSTT2)剂量组。用H2O2刺激PC12细胞使其发生凋亡,MTT法检测PC12细胞活性,流式细胞仪检测PC12细胞亚二倍体峰比率及线粒体膜电位的变化,免疫组织化学方法检测与凋亡相关蛋白Bcl-2及Bax。结果:与模型组比较,蒺藜总皂苷组随着剂量的增加PC12细胞存活率提高(P<0.001),凋亡比率下降(P<0.01),线粒体膜电位回升(P<0.01),Bcl-2表达增加(P<0.05),而Bax的表达降低(P<0.05)。结论:蒺藜总皂苷可抑制H2O2诱导的PC12细胞凋亡,其机制可能与抑制线粒体途径的细胞凋亡有关。

关键词: PC12细胞, 细胞凋亡

Abstract: Objective To investigate the protective effect of gross saponin tribulus terrestris (GSTT) on the apoptosis of pheochromocytoma cells (PC12 cells )induced by H2O2 and its mechanisms.Methods PC12 cells were divided into control,model,high dose GSTT(GSTT1) and low dose GSTT(GSTT2) groups.Apoptosis of PC12 cells was induced by H2O2 at the concentration of 300μmmol•L-1.The cell activity was determined by MTT.The subdiploid peaks showing cell apoptosis rate and △Ψm were detected by flow cytometry.Proteins of Bcl-2 and Bax were detected by immunohistochemistry.Results Compared with model group,the survival rate of PC12 increased (P<0.001),the apoptotic rate and protein expression of Bax decreased(P<0.01),and the △Ψm and protein expression of Bcl-2 increased with the raise of GSTT dose(P<0.05).Conclusion GSTT can inhibit the apoptosis of PC12 induced by H2O2 which might be correlated with the inhibition of apoptosis in the path of mitochondrion.

Key words: PC12 cells, apoptosis

中图分类号: 

  • R285.5