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明胶铺底培养人胚胎干细胞的初步研究

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摘要 基质胶是人胚胎干细胞的无饲养层培养体系中常规使用的包被材料,但其价格昂贵同时不方便使用.本文研究了明胶作为替代包被材料的可能性.结果表明,明胶能够维持经胰蛋白酶消化的人胚胎干细胞的未分化状态.生长在明胶上的胚胎干细胞表达多能性标志物,具有畸胎瘤形成能力同时维持正常核型.对在明胶上培养了10代的人胚胎干细胞进行检测,结果显示这些细胞仍然表达高水平的Oct4.同时,与基质胶上生长的人胚胎干细胞相比,明胶上生长的人胚胎干细胞能够形成相似大小和数量的碱性磷酸酶阳性集落(P>0.05),同时生长在两种包被材料上的人胚胎干细胞含有相似比例的SSEA-4阳性细胞(95.1%vs94.3%.P>0.05).
出处 《科学通报》 EI CAS CSCD 北大核心 2009年第18期2813-2818,共6页 Chinese Science Bulletin
基金 国家重点基础研究发展计划(批准号:2006CB943603 2006CB503905) 科技部国际合作项目(批准号:20070192)资助
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