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- W2078707935 abstract "Suicide gene therapy has become an effective therapy for breast cancer, and ultrasound targeted microbubble destruction (UTMD) has become a popular topic in the gene therapy field. In this study, MCF-7 cells with the KDR promoter and LSl74T cells without the KDR promoter were transfected with the recombinant plasmid pEGFP-KDRP-CD/TK using UTMD. The recombinant plasmid pEGFP-KDRP-CD/TK was transfected into MCF-7 and LS174T cells successfully with no significant difference in transfection efficiency (p>0.05). By RT-PCR, the CD/TK fusion gene was shown to be expressed in MCF-7 cells but not expressed in LS174T cells. In a cytotoxicity experiment, transgenic MCF-7 cells were sensitive to the prodrugs 5-FC and GCV. When both 5-FC and GCV were administered, the rate of cellular inhibition was significantly greater than that achieved when only one of the prodrugs was administered (p<0.001). Moreover, the inhibition rates achieved administering 5-FC, GCV and both 5-FC and GCV were all significantly greater than the gene transfection rate of 21.92±3.64% (p<0.001). However, transgenic LS174T cells were not sensitive to any prodrug. These results demonstrated that UTMD is a safe, effective and targeted gene delivery system. Also, the KDR promoter can drive expression of the CD/TK double suicide gene target in MCF-7 cells, and the targeted killing effect of the KDRP-CD/TK gene on MCF-7 cells in vitro has good synergy with expression of the CD/TK fusion gene." @default.
- W2078707935 created "2016-06-24" @default.
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- W2078707935 date "2012-01-01" @default.
- W2078707935 modified "2023-10-14" @default.
- W2078707935 title "The targeted gene (KDRP-CD/TK) therapy of breast cancer mediated by SonoVue and ultrasound irradiation in vitro" @default.
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- W2078707935 doi "https://doi.org/10.1016/j.ultras.2011.08.002" @default.
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