nm23-H1转染Tca8113细胞后稳定表达细胞株的建立

目的:建立稳定高表达nm23-H1的细胞株。方法:将nm23-H1真核表达质粒转化大肠杆菌,制备感受态细菌。提取质粒,酶切琼脂糖电泳对质粒进行鉴定。脂质体介导将质粒转染人舌鳞癌细胞株Tca8113,G418持续筛选5周,对获得的细胞株进行免疫组化、Western-blott和流式细胞仪鉴定。结果:酶切琼脂糖电泳证实插入nm23-H1片段长度为986bp,质粒片段长度为6550bp,nm23-H1的cDNA被插入在pCMV-Bam-Neo中的BamH1区域。免疫组化、Western-blott和流式细胞仪鉴定表明nm23-H1高表达。结论:成功建立稳定高表达nm23-H1的细胞株。

Establishment of a cell line of Tca8113 with stable expression of nm23-H1 by gene transfection

Objective:To establish a tongue cancer cell line that stably overexpresses nm23-H1.Methods:The reconstructed plasmid, pCMV-BamH1-Neo-nm23-H1, was transfected into bacteria and amplified. The plasmid was identified by electrophoresis on a 10 g/L agarose gel and stained with ethidium bromide and then transfected to the cell line of Tca8113 by lipofectin strategy and was selected by G418 for 5 weeks. The stable expression of nm23-H1 was identified by immunofluorescence,Western-blotting and flow cytometer.Results:Restriction endonuclease Bam H1 examination showed that 986 bp of nm23-H1 was in pCMV-Bam-Neo vector. 5 weeks after transfection positive clones were obtained and the transfected cells were proliferated to confluent.Immunohistochemical examination,Western blot and flow cytometry showed that nm23-H1 expression was increased in the transfected cells.Conclusion:A tongue cancer cell line expressing nm23-H1 is established.