戊型肝炎病毒(HEV)不稳定易降解,难以从载毒标本中分离,而迄今为止仍没有有效的细胞培养模型,这很大程度上限制了HEV感染致病机制的研究。近年来,随着对HEV研究的深入,较好模拟了HEV病毒衣壳表面结构的重组蛋白为研究HEV与宿主细胞相互作用提供了一条新的途径。HEV衣壳由单一蛋白(pORF2)组成,大量研究表明pORF2的重组表达片段p239(aa368-606)很好地模拟了HEV的免疫优势中和表位。p239对HEV与原代肝细胞、HepG2细胞的吸附阻断,p239对多株细胞系具有与HEV相似的嗜性,以及多株HEV特异单抗对p239与HepG2细胞结合的特异阻断,强有力地提示p239同时也很好...Hepatitis E Virus [HEV] has emerged to be a dominant cause of acute hepatitis, replacing hepatitis A virus in some areas and comparable in others. Research into pathogenesis and epidemiology of infection caused by this virus has been severely hampered, because the virus could not be efficiently propagated in cell culture. Previous studies suggest that p239, a recombinant protein specified by ORF...学位:理学博士院系专业:生命科学学院生物学系_生物化学与分子生物学学号:B20032601