癌变·畸变·突变 ›› 2005, Vol. 17 ›› Issue (5): 272-275.doi: 10.3969/j.issn.1004-616x.2005.05.005

• 论著 • 上一篇    下一篇

不同应激对HeLa细胞增殖、凋亡及热休克蛋白70表达的影响

李 莲;宋维龙;周 磊;张中霞;王根林   

  1. 南京农业大学动物科技学院
  • 收稿日期:2005-01-01 修回日期:2005-05-31 出版日期:2005-09-30 发布日期:2005-09-30
  • 通讯作者: 王根林

Effects of Different Stressful Factors on HeLa Cell roliferation,Apoptosis and HSP70 Expression

LI Lian;Song Wei-long;Zhou Lei;Zhang Zhong-xia;WANG Gen-lin   

  1. College of Animal Science and Technology, Nanjing Agriculture University
  • Received:2005-01-01 Revised:2005-05-31 Online:2005-09-30 Published:2005-09-30

摘要: 背景与目的: 研究热应激、地塞米松(Dexamethasone,Dex)、吐温80(Tween_80)、氨茶碱、乙二胺四乙酸(Ethylenediamine tetra_acetic acid,EDTA)、Ca2+和双氧水应激对HeLa细胞增殖、凋亡及热休克蛋白70(Heat shock protein 70,HSP70)表达的效应。 材料与方法: 应用噻唑蓝法[3_(4,5_dimethylthiazol_2_yl)_2,5_diphenyl tetrazolium, MTT]测定细胞增殖;将收集的HeLa细胞制备成玻片和硝酸纤维素膜(Nitrocellulose membrane,NCM)两种标本,应用免疫细胞化学、斑点印迹技术检测HSP70;提取细胞DNA,应用琼脂糖凝胶电泳检测细胞凋亡。 结果: HeLa细胞经不同应激处理后,细胞增殖均受到抑制;除EDTA处理组未出现凋亡外,其余组均见DNA降解,形成梯形条带;各处理组HSP70表达较对照组有所提高,其中双氧水、热处理和 氨茶碱处理组与对照组相比差异有统计学意义,Dex和Tween_80处理组与对照组相比差异有统计学意义,EDTA和 Ca2+处理组HSP70表达有升高趋势,但差异无统计学意义。 结论: 不同应激可提高HeLa细胞的HSP70表达,并引起细胞不同程度的凋亡。

关键词: HeLa细胞, 细胞增殖, 凋亡, 热休克蛋白70

Abstract: BACKGROUND & AIM: To investigate the effects of different stress factors on HeLa cell proliferation,apoptosis and heat shock protein 70(HSP70) expression. MATERIAL AND METHODS:Cell culture technique,3_(4,5_dimethylthiazol_2_yl)_2,5_diphenyl tetrazolium(MTT) flow cytometry,immunocytochemistry,western dot. RESULTS:The present study showed that cell apoptosis appeared in all experiment group;there was a tendence to increase HSP70 expression treated with Ethylenediamine tetra_acetic acid (EDTA) and Ca2+; The protein level of HSP70 was elevated significantly in the groups of H2O2,heating and aminophylline (P<0.01) than control group; the protein level of HSP70 was higher (P<0.05) than control group in the groups of dexamthasone and tween_80. CONCLUSION: The results suggested that the expression of HSP70 in HeLa cells could be elevated and apoptosis could be induced by stress factors.

Key words: HeLa cell, cell proliferation, apoptosis, heat shock protein 70