无血清悬浮法筛选人结肠癌干细胞样亚群的初步研究

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目的应用无血清培养基(SFM)悬浮法培养人结肠癌细胞,筛选和鉴定人结肠癌细胞中肿瘤干细胞相关亚群,并对其进行干预。方法取新鲜的结肠癌肿瘤组织进行原代培养,分离获得的原代结肠癌细胞在SFM中形成肿瘤干细胞球,而在含血清培养基(SSM)中则为贴壁生长。用5-氟尿嘧啶(5-Fu)对筛选获得的肿瘤于细胞球进行干预,检测侧群细胞(SP)比例、细胞克隆形成能力、正常肠道干细胞标记物Musashi-1表达及结肠癌干细胞特异性标记物CD133的表达。结果原代培养获得的人结肠癌细胞能够在SFM中存活、增殖并形成肿瘤干细胞球
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