Recombinant gp135 envelope glycoproteins of caprine arthritis-encephalitis lentivirus variants inhibit homologous and heterologous variant-specific neutralizing antibodies.

Recombinant gp135 envelope glycoproteins of caprine arthritis-encephalitis lentivirus variants inhibit homologous and heterologous variant-specific neutralizing antibodies.
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山羊关节炎脑炎慢病毒变体的重组 gp135 包膜糖蛋白抑制同源和异源变体特异性中和抗体。

DOI:
10.1016/0042-6822(91)90747-y
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发表时间:
1991
期刊:
影响因子:
3.7
通讯作者:
Cheevers,WP
Cheevers,WP
中科院分区:
医学3区
文献类型:
--
作者:
Lichtensteiger,CA;KnowlesJr,DP;McGuire,TC;Cheevers,WP

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山羊关节炎-脑炎病毒(CAEV)的两个抗原性变异体的囊膜(env)基因,通过血清中和,在牛痘病毒中表达。重组gp 135包膜糖蛋白竞争性抑制CAEV感染山羊血清的中和活性,表明gp 135是CAEV中和抗体的优势靶抗原。此外,针对一种变体的山羊血清的类型特异性中和活性被同源和异源变体重组gp 135抑制。因此,CAEV变体env基因编码两种变体的类型特异性中和表位。结果表明,CAEV的抗原变异涉及编码保守中和表位以外的氨基酸差异的基因突变,影响表位暴露于免疫系统。
The envelope (env) genes of two antigenic variants of caprine arthritis-encephalitis virus (CAEV), defined by serum neutralization, were expressed in vaccinia virus. Recombinant gp135 envelope glycoprotein competitively inhibited neutralizing activity of serum from CAEV-infected goats, indicating gp135 is a dominant target antigen of CAEV neutralizing antibody. In addition, type-specific neutralizing activity of goat serum directed against one variant was inhibited by both homologous and heterologous variant recombinant gpl35. Hence, a CAEV variant env gene encodes type-specific neutralization epitopes of both variants. The results indicate that antigenic variation of CAEV involvesenvgene mutations encoding amino acid differences outside conserved neutralization epitopes affecting epitope exposure to the immune system.
经口感染两种山羊关节炎-脑炎慢病毒分离株的山羊的慢性疾病。
DOI: --
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