肝癌细胞系中EpCAM+细胞亚群对化疗药物的耐药特性

来源 :2013医学前沿论坛暨第十三届全国肿瘤药理与化疗学术会议 | 被引量 : 0次 | 上传用户:agreessive
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目的 肿瘤内存在极小一部分细胞,在肿瘤的恶性表型和生物学特性中起着决定性的作用,被称为"肿瘤干细胞".我们前期研究表明肝癌细胞系Huh-7中分选EpCAM+细胞具有更强的增殖、自我更新、分化、克隆形成和体外成瘤能力等肝癌干细胞特性.本研究将初步探讨肝癌细胞系Huh-7中EpCAM+细胞亚群对化疗药物顺铂的耐药特性.方法 应用流式细胞术检测肝癌细胞系Huh-7中细胞表面标志物EpCAM的表达;采用免疫磁珠法分离Huh-7细胞系中EpCAM+细胞亚群和EpCAM-细胞亚群,分别采用PCR和Western-blot的方法检测ATP结合转运蛋白G超家族成员2(ABCG2)在两组细胞中的表达水平.体外培养肝癌细胞系Huh-7细胞并加入不同浓度的化疗药物顺铂(0.625~2.5μg/ml)继续培养72h,观察并比较EpCAM+细胞亚群和EpCAM-细胞亚群的耐药能力.
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