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Construction of Smac gene-containing and human prostate specific antigen promoter-regulated vector and its expression
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This work was supported by National Natural Science Foundation of China(30271301)

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    Objective: To construct an eukaryotic expression vector containing Smac gene and study the expression efficiency and specificity of prostate specific antigen(PSA) enhancer/promoter in a possible targeted gene therapy scheme for prostate cancer. Methods: PSA enhancer(PSAE) and promoter(PSAP) sequences were amplified using PCR method. CMV and T7 promoters were deleted from pcDNA3.1-Smac and replaced by the two specific fragments to generate pPSAE-PSAP-Smac. After transfection into different cell lines, the status of cells was observed. And then, we determined the relative concentration of Smac mRNA in RT-PCR. Results: The recombinant plasmid of pPSAE-PSAP-Smac was successfully constructed. And only the prostate cancer cell line PC-3 was suppressed after transfection with pPSAE-PSAP-Smac. However, other nonprostate lines were not. Moreover, the concentration of Smac mRNA regulated by PSA promoter and enhancer was higher in comparison to the CMV promoter-driven control vectors. Conclusion: An expression vector containing the Smac gene (based on elements of the PSA gene regulatory sequences) has been developed and shown to function in prostate cancer cell lines which provides a solid platform for launching clinical studies.

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Yu Wu, Fuqing Zeng, Liang Wang, Yanbo Wang, Guiyi Liao.[J].南京医科大学学报(自然科学版),2007,(3):134-138

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  • 收稿日期:2007-02-26
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