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人乳头瘤病毒16型病毒样颗粒的制备及其免疫原性研究
Authors
夏宁邵
张军
+8 more
张春华
李少伟
杜海莲
沈文通
苏永在
顾颖
魏旻希
黄博
Publication date
15 July 2009
Publisher
Abstract
利用PCR技术从HPV16阳性阴道分泌物标本中获得HPV16 L1基因片段,并将其插入表达载体pTO-T7中,构建重组表达质粒pTO-T7-HPV16-L1;以该重组质粒转化大肠杆菌ER2566并表达HPV16 L1蛋白;所表达的HPV16 L1蛋白经过硫酸铵沉淀、离子交换层析和疏水相互作用层析等纯化步骤后,HPV16 L1纯度达到98%以上,并可在体外装配为直径50nm的病毒样颗粒;动物免疫原性研究结果显示,该病毒样颗粒可诱导高滴度的针对HPV16的中和抗体。上述研究结果表明通过大肠杆菌表达系统制备的HPV16病毒样颗粒具有纯度高,与天然病毒颗粒形态高度相似的特点,并具有高度免疫原性,可以应用于HPV16病毒样颗粒的结构功能研究及HPV16疫苗研发等领域
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Last time updated on 16/06/2016