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• 基础医学 • 上一篇    下一篇

不同肿瘤细胞株人端粒酶逆转录酶及端粒酶活性的检测及其意义

于晓霞1,石英爱1,董 贺2,张丽红1,吴 珊1   

  1. 1. 吉林大学基础医学院 病理生物学教育部重点实验室,吉林 长春130021;2. 辽宁省大连市第三人民医院,辽宁 大连116033)
  • 收稿日期:2007-08-26 修回日期:1900-01-01 出版日期:2008-07-28 发布日期:2008-07-28
  • 通讯作者: 吴 珊

Determination of human telomerase reverse transcriptase and telomerase activity in different tumor cell lines and its significance

YU Xiao-xia1,SHI Ying-ai1,DONG He2,ZHANG Li-hong1,WU Shan1   

  1. (1. Key Laboratory of Pathobiology,Ministry of Education,Jilin University,Changchun 130021,China;2.Third People’ s Hospital of Dalian City in Liaoning Province,Dalian 116033,China)
  • Received:2007-08-26 Revised:1900-01-01 Online:2008-07-28 Published:2008-07-28
  • Contact: WU Shan

摘要: 目的:检测5种肿瘤细胞株人端粒酶逆转录酶(hTERT)表达及端粒酶活性状态,为端粒酶抑制剂在肿瘤治疗学方面的应用研究提供理论基础。方法:分别用免疫细胞化学S-P法和TRAP-ELISA方法检测人宫颈癌细胞株HeLa、人乳腺癌细胞株MCF-7、人肝癌细胞株SMMC7721、人前列腺癌细胞株PC-3m和人骨肉瘤细胞株U2OS hTERT表达及端粒酶活性状态。 结果:HeLa细胞hTERT表达阳性率最高,为 (93.75±3.10) %;而U2OS阳性表达率最低,仅为(2.75±0.96) %,近于不表达;其他3种细胞MCF-7、SMMC7721和PC-3m的hTERT表达阳性率分别为(92.50±2.65)%、(53.75%±2.22)%和(23.50±2.89)%。与hTERT表达阳性率相似,HeLa细胞端粒酶活性最强,为(94.58±3.49)%;而U2OS 端粒酶活性近于阴性,为(3.02±0.43)%;其他3种细胞MCF-7、SMMC7721和PC-3m的端粒酶活性分别为 (73.90±4.50) %、(66.67±3.35) %和(50.62±1.96) %。结论:5种细胞系中hTERT表达及端粒酶活性状态差别很大,提示端粒酶抑制剂可适用于多数但并非所有恶性肿瘤的治疗学研究。

关键词: 细胞株, 端粒酶逆转录酶, 肿瘤

Abstract: To detect the expression of humar telomerase reverse transcriptase (hTERT) and telomerase activity in HeLa,MCF-7,SMMC7721 PC-3m and U2OS cell lines. Methods The techniques of immunochemistry and TRAP-ELISA were employed to detect the expression of hTERT and telomerase activity in different tumor cell lines. Results The positive rate of hTERT in HeLa cells(93.75%±3.10%)was significantly higher than that in U2OS cells(2.75%±0.96%),besides the other three cell lines showed an positive rates of hTERT in MCF-7(92.50%±2.65%),SMMC7721 (53.75%±2.22%)and PC-3m(23.50%±2.89%); Meanwhile,the telomerase activity of HeLa cells (94.58%±3.49%) was also much higher than that of U2OS(3.02%±0.43%),likewise the telomerase activities of the other three cell lines (MCF-7,SMMC7721,PC-3m) were 73.90%±4.50%,66.67%±3.35% and 50.62%±1.96%, respectively. Conclusion The expression of hTERT and telomerase activity show obvious differences among five tumor cell lines,suggesting that telomerase inhibitors cannot effect on all the tumor cell lines.

Key words: cell line, telomerase reverse transcriptase, neoplasms

中图分类号: 

  • R73-36