J4

• 基础研究 •    下一篇

RNA干扰技术用于survivin基因表达的研究

沈 波,鞠桂芝*,刘 扬   

  1. 吉林大学公共卫生学院放射生物学教研室,吉林 长春130021
  • 收稿日期:2005-08-23 修回日期:1900-01-01 出版日期:2006-05-28 发布日期:2006-05-28
  • 通讯作者: 鞠桂芝

Application of RNA interference on gene expression of survivin

SHEN Bo, JU Gui-zhi*, LIU Yang   

  1. Department of Radiobiology, School of Public Health, Jilin University, Changchun 130021, China
  • Received:2005-08-23 Revised:1900-01-01 Online:2006-05-28 Published:2006-05-28
  • Contact: JU Gui-zhi

摘要: 目的:构建pSUPER-SVV表达载体,并在真核细胞中进行表达,验证survivin基因表达是否受到抑制。方法:设计特异性以survivin基因为靶序列的寡核苷酸序列,退火后将其连接于pSUPERbasic载体中,经测序鉴定插入序列的正确性。以脂质体转染方法将pSUPER-SVV干扰质粒转染人类宫颈癌(HeLa)细胞,应用流式细胞术和RT-PCR方法检测survivin基因的表达情况。结果:成功构建survivin的RNAi表达载体。该载体可以使HeLa细胞中survivin基因在mRNA转录水平明显降低,与转染空质粒组相比差异具有显著性(P<0.05)。利用流式细胞术检测蛋白表达水平,转染pSUPER-SVV组抑制率可达31.62%,与转染空质粒组相比差异具有显著性(P<0.001)。结论:成功构建干扰survivin基因表达的载体,转染HeLa细胞后survivin基因在mRNA转录水平、蛋白表达水平均受到明显抑制。

关键词: RNA干扰, 基因表达

Abstract: Objective To construct pSUPER-SVV vector and obtain its expression in HeLa cells, in order to interfere the expression of survivin. Methods Oligonucleotide sequences specific for survivin were designed for RNA interference (RNAi), after annealed they were ligated to pSUPERbasic vector. After sequencing, the vector of pSUPER-SVV was transfected into HeLa cells by LipofectAmine. The expression of survivin was detected by RT-PCR and FCM. Results The RNAi expression vector of survivin was constructed successfully, which depressed the expression of survivin efficiently. Survivin was significantly depressed on the level of mRNA in HeLa cells compared with the control groups (P<0.05), and the expression of survivin was down-regulated to 31.62%, there was significant difference compared with control group (P<0.001). Conclusion The RNAi vector targeted to survivin gene is successfully constructed, survivin is depressed on the levels of mRNA and protein in HeLa cells transfected by the vector.

Key words: RNA interference, gene expression

中图分类号: 

  • Q78