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TSG101-siRNA对肝癌耐药细胞株QGY/CDDP的逆转作用

, PP. 170-173

Keywords: 肝癌,耐药,小干扰RNA,TSG

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Abstract:

目的构建TSG101(tumorsusceptibilitygene101)小干扰RNA(TSG101-siRNA)的真核表达载体,观察RNA干扰沉默TSG101基因后化疗药物顺铂(CDDP)对肝癌耐药细胞株QGY/CDDP增殖的影响。方法根据小干扰RNA的设计原则由计算机软件辅助设计TSG101的靶序列,应用DNA重组技术将目的序列克隆入小干扰RNA的表达载体;RT-PCR检测TSG101-siRNA对QGY/CDDP细胞tsg101mRNA表达的影响;Westernblot检测TSG101-siRNA对TSG101基因表达蛋白的抑制效率;采用MTT法测定TSG101-siRNA联合化疗药物CDDP对QGY/CDDP的增殖抑制作用。结果测序显示干扰载体构建成功,TSG101-siRNA能抑制tsg101mRNA表达,使QGY/CDDP细胞TSG101蛋白的表达下降,抑制QGY/CDDP细胞的增殖,明显增强CDDP对QGY/CDDP的增殖抑制。结论TSG101-siRNA的真核表达载体能有效地抑制QGY/CDDP细胞的增殖,提高化疗药物CDDP对QGY/CDDP的抑制率,能逆转肝癌耐药细胞株QGY/CDDP对CDDP的耐药性。

References

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