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卵巢癌细胞系OVCAR-3中肿瘤干细胞样细胞的分离与鉴定 被引量:3

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摘要 目的:分选卵巢癌细胞系OVCAR-3中ABCG2+细胞,并鉴定其肿瘤干细胞特征。方法:应用流式细胞仪检测、分选OVCAR-3中ABCG2+细胞,并通过克隆形成试验、分化能力检测及化疗敏感性分析等试验比较ABCG2+及ABCG2-细胞增殖能力、自我更新及分化能力以及耐药性,并通过RT-PCR检测其干性基因表达量。结果:卵巢癌细胞系OVCAR-3中存在少量ABCG2+细胞,其比例为12.2%。ABCG2+及ABCG2-细胞的克隆形成率分别为38.25%±5.46%及14.35%±3.21%,两者比较差异有统计学意义(P<0.05);ABCG2+及ABCG2-细胞顺铂的IC50值分别为(25.1±5.7)μmol/L及(6.4±3.4)μmol/L,紫杉醇的IC50值分别为(7.28±1.25)μmol/L及(2.14±0.68)μmol/L,两者顺铂及紫杉醇IC50值差异均有统计学意义(P<0.05);ABCG2+细胞中Oct4及Nanog基因表达量分别是ABCG2-细胞的2.01±0.45倍及4.56±0.74倍,两者Oct4及Nanog基因表达量差异有统计学意义(P<0.05);分别贴壁培养ABCG2+及ABCG2-细胞,ABCG2+细胞群中ABCG2+细胞比例为10.8%,与分选培养前比例相似(P>0.05);ABCG2-细胞群中ABCG2+细胞比例为4.8%,低于分选培养前比例(P<0.05)。结论:卵巢癌细胞系OVCAR-3中ABCG2+细胞所占比例较少,较ABCG2-细胞具有更高的增殖能力、自我更新和分化潜能以及耐药性,并高表达干性基因,符合肿瘤干细胞的基本特征。研究分选的ABCG2+细胞可被视为卵巢癌干细胞样细胞,是研究卵巢癌干细胞较为理想的细胞模型。
出处 《中国妇幼保健》 CAS 北大核心 2013年第18期3001-3003,共3页 Maternal and Child Health Care of China
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参考文献9

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