Host antibody response to viral structural and nonstructural proteins after hepatitis A virus infection.

Host antibody response to viral structural and nonstructural proteins after hepatitis A virus infection.
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甲型肝炎病毒感染后宿主抗体对病毒结构和非结构蛋白的反应。

DOI:
10.1093/infdis/165.2.273
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发表时间:
1992
期刊:
The Journal of infectious diseases
影响因子:
--
通讯作者:
Ehrenfeld,E
Ehrenfeld,E
中科院分区:
--
文献类型:
--
作者:
Jia,XY;Summers,DF;Ehrenfeld,E

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甲型肝炎病毒(HAV)的亚基因组RNA序列在体外翻译产生的蛋白质代表的结构(P1)和非结构(P2和P3)域的病毒多蛋白。这些蛋白质被用作抗原,以检测急性和恢复期的人和实验感染的黑猩猩血清中抗体的存在。所有受感染的个体都有识别未切割的P1蛋白和非结构蛋白的抗体。感染者血清中的抗体识别对SDS和热处理敏感的构象依赖性表位。对实验感染的黑猩猩进行的时间进程研究表明,在感染后24至31天之间可检测到抗HAV蛋白的抗体,并持续6个月以上。人血清对结构和非结构抗原的抗体保持阳性至少2年半。这些数据表明,甲型肝炎病毒非结构蛋白可作为血清学标志物用于甲型肝炎病毒诊断和评价灭活疫苗的现场试验。
Subgenomic hepatitis A virus (HAV) RNA sequences were translated in vitro to produce proteins representing the structural (P1) and nonstructural (P2 and P3) domains of the viral polyprotein. These proteins were used as antigens to detect the presence of antibodies in sera from acute and convalescent humans and an experimentally infected chimpanzee. All infected individuals tested had antibodies that recognized uncleaved P1 proteins as well as nonstructural proteins. Antibodies in sera from infected individuals recognized conformation-dependent epitopes that were sensitive to SDS and heat treatment. Time-course studies of the experimentally infected chimpanzee showed that antibodies to the HAVproteins were detectable between 24 and 31 days after infection and persisted for >6 months. Human sera remained positive for antibodies to both structural and nonstructural antigens for at least 2½ years. The data suggest that HAV nonstructural proteins could be used as serologic markers for HAV diagnosis and for evaluating field trials of inactivated vaccines.
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