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乙型肝炎病毒pre-S1区中和抗体可变区的原核表达
Authors
吴婷
夏宁邵
+5 more
张军
程通
管宝全
罗文新
陈敏
Publication date
23 November 2004
Publisher
Abstract
鼠源单克隆抗体MA18 7是特异识别乙型肝炎病毒 (HBV)pre S1抗原的中和抗体。为表达MA18 7的小分子抗体 ,将MA18 7的重链可变区基因 (VH)和轻链可变区 (VL)基因分别克隆到原核表达载体pTO T7进行原核表达。结果VH 和VL 均以包涵体的形式高效表达 ,包涵体经过变性、复性及金属离子亲和纯化后获得纯度 >90 %的重组抗体片段。生物传感器、竞争ELISA和间接ELISA测定均显示 ,VH 或VL 均不能结合相应抗原 ,但二者体外混合后可迅速非共价结合形成具有良好活性的可变区抗体Fv,表明MA18 7的抗原结合活性区由重链可变区和轻链可变区共同组
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Last time updated on 16/06/2016