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Journal of Practical Stomatology ; (6)2001.
Article in Chinese | WPRIM | ID: wpr-543214

ABSTRACT

Objective:To construct eukaryotic expressing vector of the full length coding sequence of Bad gene and to express the gene in the basal cell carcinima A431 cells.Methods:Bad gene was amplified from Hela cell line by RT-PCR and the fragment of the cDNA was cloned into eukaryotic expressing vector pcDNA3.1-myc by ligating the fragment into XhoI and EcoRI site.The recombinant plasmid pcDNA3.1-myc-Bad was identified by DNA sequencing and restriction enzyme analysis.The gene transfection mediated by lipofectin was used to introduce the eukaryotic expressing vector of pcDNA3.1-myc-Bad into human basal cell carcinima A431 cells. After selection with G418, resistant colonies were obtained.Trasfection efficiency was identified by Western blot and SABC-FITC assay.Cell proliferation was examined by cell counting and colonogenic assay after transfection.Results:A 500 bp DNA fragment was amplified with RT-PCR.Sequence and restriction enzyme analysis showed that the recombinant plasmid pcDNA3.1-myc-Bad was constructed successfully.In human basal cell carcinima cell line A431 Bad gene was expressed.The cell proliferation was inhibited by 62.6% and colonogenesis by 39.9% by the transfection of the gene.Conclusion: Human Bad gene was successfully cloned.Transfection of basal cell carcinoma cells with the gene may inhibit the cell proliferation and colonogenesis.

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