机构地区: 军事医学科学院生物工程研究所
出 处: 《微生物学报》 2004年第3期328-331,共4页
摘 要: 从人胎盘总RNA中通过RT PCR方法获得sTRAIL基因的cDNA ,并通过构建高拷贝表达载体在毕赤酵母中获得了高效表达 ,表达量可达 4 0 1mg L。并对表达产物进行了分离纯化和生物学活性分析 ,获得了纯度大于 90 %的纯品 ,该样品能明显表现出诱导L92 9肿瘤细胞凋亡的作用 ,半数致死量为 0 1 8μg mL 。 The gene of sTRAIL was obtained from placenta total RNA by RT-PCR. Multicopies plasmid-pPICZα was constructed and tansformated into Pichia pastoris X33 The expresstion level of recombinant sTRAIL can reach 40 1mg/L. Separation, purification and bioactivity analysis of the expressed products was performed. The purity of the final products reached more than 90%. The product could induce L929 cell apoptosis, and the ED 50 of sTRAIL is about 0 18μg/mL.
领 域: [生物学]