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重组人VEGF165蛋白在毕赤酵母中高效表达与多克隆抗体的制备

DOI: 10.11830/ISSN.1000-5013.2014.06.0695

Keywords: 重组人VEGF165蛋白, 多克隆抗体, 毕赤酵母, 高效表达

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Abstract:

构建pPIC9K-VEGF165分泌型载体,线性化后电击转化至GS115(his4)中,经最小葡萄糖培养基(MD平板)筛选出阳性表达菌株并进行聚合酶链式反应(PCR)验证.菌株发酵上清液经Sephadex G-25,Heparin Sepharose FF和Sephacryl S-100层析介质分离纯化,目的蛋白纯度达到95%,相对分子质量约为24 ku.结果表明:重组人VEGF165蛋白能诱导人脐静脉内皮细胞(HUVEC)增殖,提高HUVEC细胞的活性;重组人VEGF165蛋白免疫小鼠,制备多克隆抗体,间接酶联免疫吸附测定法(ELISA)检测抗体效价达1:51 200.

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