华西口腔医学杂志

• 专栏论著 • 上一篇    下一篇

人肿瘤坏死因子-α基因转染人胚成肌细胞的表达和分泌研究

高振南,高家让,田卫东,李声伟,刘磊,付春华   

  1. 口腔生物医学工程教育部重点实验室,四川大学,四川 成都610041
  • 收稿日期:2005-04-25 修回日期:2005-04-25 出版日期:2005-04-20 发布日期:2005-04-20
  • 通讯作者: 高振南,Tel: 0531-8382595
  • 作者简介:高振南(1969-),男,云南人,副教授,博士,现在山东大学口腔医院口腔颌面外科工作
  • 基金资助:
    四川省卫生厅科研基金资助项目(1999年)

Expression and Secretion of Human Tumor Necrosis Factor Gene Transfected on Human Embryo Myoblasts

GAO Zhen- nan, GAO Jia-rang, TIAN Wei-dong, LI Sheng-wei, LIULei, FU Chun-hua   

  1. Key Lab. of Oral Biomedical Engineering of Ministry ofEducation, Sichuan University, Chengdu610041, China
  • Received:2005-04-25 Revised:2005-04-25 Online:2005-04-20 Published:2005-04-20

摘要: 目的 应用人肿瘤坏死因子-α(hTNF-α)基因转染人胚成肌细胞,观察转染hTNF-α基因后人胚成肌细胞表 达和分泌hTNF-α的水平。方法 用阳离子脂质体DOSPER介导含hTNF-α基因的穿梭质粒pSV23SHTNF转染人胚 成肌细胞;对照组只给予等量的脂质体,不加入质粒。转染基因后24、48、72、96 h用免疫组织化学染色观察hTNF-α 基因在人胚成肌细胞细胞浆和细胞膜的表达水平,并用ELISA法检测人胚成肌细胞培养上清液中hTNF-α的浓度。 结果 免疫组织化学染色发现实验组人胚成肌细胞在转染hTNF-α基因后24、48、72、96 h均见细胞浆和细胞膜hT- NF-α呈强阳性表达,而对照组均呈弱阳性;ELISA检测发现实验组人胚成肌细胞培养上清液中hTNF-α平均浓度在 各时期均高于对照组(P<0.05),尤以转染72 h后最高,达401.0 pg/ml。结论 hTNF-α基因转染成肌细胞,可使成 肌细胞持续高表达和高浓度分泌hTNF-α,提示可以用hTNF-α基因转染舌癌周围肌细胞,使癌周微环境肌细胞持续 表达和分泌高浓度hTNF-α来抑制舌癌向肌深层浸润。

关键词: 人肿瘤坏死因子-α, 基因转染, 人胚成肌细胞, 基因表达

Abstract:

Objective To observe human tumor necrosis factor-α(hTNF-α) expression and secreting level of human embryo myoblasts transfected by hTNF-αgene.Methods Human embryo myoblasts were transfected with shuttle plasmid pSV23SHTNF containing hTNF-αgene by cationic liposomes DOSPER. The control group was only given equivalent liposomes except plasmid. After culturing for 24, 48, 72 and 96 hours, hTNF-αexpression level of human embryo myoblastswas observed with immunocyto- chemistry staining, and hTNF-αsecreting of human embryo myoblasts was analyzed by ELISA.Results After transfected by hT- NF-αgene for 24 , 48, 72 and 96 hours, the human embryomyoblasts displayed significant secretion of hTNF-αin the cultural su- pernatant(P<0.05), and overexprsssion in cytoplasma and cell membrane.Conclusion Transfection of hTNF-αgene to human myoblasts made myoblasts secrete high concentration of hTNF-α, implying it is feasible that transfecting muscle cells surrounding tongue carcinoma lesion with hTNF-αgene can prevent tongue carcinoma from intruding into deeper muscle tissue.

Key words: human tumor necrosis factor-α, gene transfection, human embryo myoblasts, gene expression