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山东大学学报(医学版) ›› 2013, Vol. 51 ›› Issue (10): 24-28.

• 基础医学 • 上一篇    下一篇

靶向HPV16-E5的siRNA对TRAIL诱导宫颈癌Caski细胞凋亡的影响

梁婷婷,张萍,马德美,朱琳   

  1. 山东大学第二医院妇产科, 济南 250033
  • 收稿日期:2013-03-13 出版日期:2013-10-10 发布日期:2013-10-10
  • 通讯作者: 朱琳, E-mail:zl-emtf@163.com
  • 基金资助:

    山东省自然科学基金(Y2006C44)

Effect on apoptosis mediated by TRAIL against Caski cells of HPV16-E5-targeted siRNA

LIANG Ting-ting, ZHANG Ping, MA De-mei, ZHU Lin   

  1. Department of Obstetrics and Gynecology, the Second Hospital of Shandong University, Jinan 250033, China
  • Received:2013-03-13 Online:2013-10-10 Published:2013-10-10

摘要:

目的  探讨靶向人乳头瘤病毒16早期蛋白5(HPV16-E5)的siRNA对TRAIL蛋白诱导子宫颈癌Caski细胞株凋亡的调节作用。方法   HPV16-E5 特异性 siRNA转染48h后,RT-PCR检测HPV16-E5 mRNA的表达;流式细胞术及caspase-8活性检测试剂盒分别检测空白对照组、siRNA-E5单独作用组、TRAIL单独作用组、siRNA-E5+TRAIL作用组、无关序列RNA+TRAIL作用组细胞的凋亡率及caspase-8的活性水平;RT-PCR及Western blotting检测siRNA干扰后Caski细胞表面TRAIL死亡受体DR4、DR5的表达。结果  RT-PCR检测结果显示,转染48h后,siRNA-E5组HPV16-E5 mRNA的表达较空白对照组和无关序列对照组下调(P<0.05); siRNA-E5+TRAIL作用组较TRAIL单独作用组相比细胞凋亡率明显增加(P<0.05),而无关序列RNA+TRAIL作用组较TRAIL单独作用组细胞凋亡率无明显变化(P>0.05);siRNA-E5组TRAIL受体DR4、DR5的表达较无关序列对照组、空白对照组无明显差异(P>0.05);caspase-8活性水平在siRNA-E5+TRAIL作用组明显较TRAIL单独作用组高,差异有统计学意义(P<0.05)。结论  靶向HPV16-E5的siRNA可增强TRAIL诱导宫颈癌Caski细胞的凋亡作用,其机制与增强caspase-8的活化有关。

关键词: 子宫颈肿瘤;TRAIL蛋白;siRNA;细胞凋亡;半胱氨酸天冬氨酸蛋白酶8

Abstract:

Objective  To discuss the effect of Human Papilloma Virus 16 early protein 5 (HPV16-E5)-targeted siRNA on Caski cells apoptosis induced by TNF-related apoptosis-inducing ligand(TRAIL).Methods  HPV16-E5-targeted siRNA was transfected into Caski cells by lipofectamine. Forty-eight hours after the transfection, the expression of E5 mRNA was detected by RT- PCR; Cell apoptosis and caspase-8 activities in the blank control group,  siRNA-E5-treated group, TRAIL-treated group, siRNA-E5+TRAIL-treated group and negative RNA+TRAIL-treated group were determined by flow cytometry and caspase-8 Activity Assay Kit. The expressions of receptors DR4 and DR5 on cell surface after RNA interference were tested by Real-Time PCR and Western blotting. Results  RT-PCR revealed that the expression of HPV16-E5 mRNA in the siRNA-E5 group was significantly lower than that in the blank and the negative control groups(P<0.05); The cell apoptosis rate in siRNA-E5+TRAIL group was significantly higher than that in the TRAIL group (P<0.05). There was no significant difference in cell apoptosis rate between the negative RNA+TRAIL group and the TRAIL group(P>0.05); There was no difference in the expressions of receptors DR4 and DR5 after RNA interference (P>0.05); The activity of caspase-8 in siRNA-E5+TRAIL group was higher than that in TRAIL group, and the difference was statistical significant(P<0.05). Conclusion  HPV16-E5-Targeted siRNA could enhance the apoptosis mediated by TRAIL against Caski cancer cells in vitro, and the mechanism may be related to the increase of caspase-8 activity.

Key words: Cervix neoplasms; TRAIL protein; siRNA;  Cell apoptosis; Caspase-8

中图分类号: 

  • R737.33
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