华西口腔医学杂志

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人肿瘤坏死因子-α基因转染对舌癌细胞的抑制作用

高振南 李声伟 高家让 田卫东 刘磊 陈伟辉   

  1. 610041  四川大学华西口腔医学院口腔颌面外科学教研室
  • 收稿日期:2002-02-25 修回日期:2002-02-25 出版日期:2002-02-20 发布日期:2002-02-20
  • 基金资助:

    本课题为卫生厅科学研究基金资助项目(编号960039)

Suppression Effect of Human Tumor Necrosis Factor-α Gene Transfection on Tongue Carcinoma Cells

Gao Zhennan , Li Shengwei , Gao Jiarang , et al   

  • Received:2002-02-25 Revised:2002-02-25 Online:2002-02-20 Published:2002-02-20

摘要:

的:探讨人肿瘤坏死因子-α(hTNF-α) 基因转染对舌癌细胞生长的影响。方法:制备和纯化含hTNF-α基因的穿梭质粒,用DOSPER 阳离子脂质体介导转染Tca8113 舌癌细胞,对照组只给予等量的脂质体,不加入质粒;转染基因24、48、72、92 h 后用ELISA 法检测细胞培养上清液中hTNF-α的浓度,并用MTT法检测细胞的存活率。结果:基因转染24、48、72、96 h 后转染组与对照组细胞培养上清液中hTNF-α浓度之间的差异均有显著性( P < 0105) ,转染组各个时期浓度均高于对照组;MTT 法检测相应各时期转染组与对照组平均OD 值之间的差异均有显著性( P <0105) ,转染组各个时期平均OD 值均低于对照组,转染细胞的存活率降低,生长受抑制。结论:阳离子脂质体介导的hTNF-α基因体外转染可在Tca8113 舌癌细胞中高表达并抑制舌癌细胞的生长。

关键词: 人肿瘤坏死因子_&alpha, 舌癌, 基因转染, 阳离子脂质体

Abstract:

The aim of this study was to investigate suppression effects of the transfection of human tumor necrosis factor- α (hTNF-α) gene on tongue carcinoma cells.Methods : The shuttle plasmid containing hTNF-α gene was extracted and purified, then it was transferred into Tca8113 tongue carcinoma cells with cationic liposome DOSPER. The control group was only given equivalent liposomes , except the plasmid. After culturing for 24 , 48 , 72 and 96 hours , the expression of hTNF- αgene in Tca8113 cells was analyzed by ELISA and , the survival rate of transferred cells was assayed byMTT enzymatic labeling technique.Results : The transferred Tca8113 cells displayed significantly overexpression of hTNF-α ( P < 0. 05) . The survival rate of the transferred Tca8113 cells was decreased significantly ( P < 0. 05) . Conclusion : Transfection of hTNF-αgene in vitro mediated by cationic li2 posomes can induce the overexpression of hTNF-αand inhibit the growth of tongue carcinoma cells.

Key words: human tumor necrosis factor-α, tongue carcinoma, gene transfection , cationic liposome