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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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肝癌细胞分泌蛋白质的多种提取方法比较
, PP. 853-858
Keywords: 肝癌,分泌蛋白,蛋白提取,超滤,沉淀,透析,LC-MS/MS
Abstract:
由于分泌蛋白在重大生理和病理过程中的重要角色和功能,使得分泌蛋白质组的研究备受人们关注.高效提取分泌蛋白质是分泌蛋白质组学研究的第一步,也是关键的一步.本研究首次比较了3种常用的提取方法:超滤法、沉淀法和透析法.以具有高自发性转移潜能的人肝癌细胞系LM3为研究对象,采用3种方法平行提取分泌蛋白,发现超滤法的提取效率最高;蛋白质经过溶液酶解,在线的一维反相高效液相色谱分离和ESI-MS/MS质谱鉴定,共鉴定了360个非冗余蛋白,其中有34,110和29个蛋白分别只在超滤法、沉淀法和透析法提取的样品中被鉴定到,沉淀法占优势,3种方法互相补充.360个蛋白中,有42个分泌蛋白为首次被鉴定到,扩大了已有的人肝癌转移细胞分泌蛋白数据库.
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