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抗SARS-CoV N蛋白单克隆抗体的特异性及其识别抗原表位的初步鉴定
Authors
夏宁邵
屈建国
+7 more
常昭瑞
洪涛
王健伟
王彦斌
谭文杰
闫克夏
阮力
Publication date
30 May 2006
Publisher
Abstract
为了明确抗SARS-CoVN蛋白单克隆抗体的特异性,并鉴定其识别表位,首先在E.coli中表达了人类冠状病毒229E(HCoV-229E)和OC43(HCoV-OC4)N蛋白,用Westernblotting和间接免疫荧光方法分别检测了4株抗SARS-CoVN蛋白单克隆抗体(1-1C2、1-1D6、2-8F11和2-2E5)与HCoV-OC43和HCoV-229E及其N蛋白的交叉反应情况,而后应用12种重组截短型SARS-CoVN蛋白对上述4种单克隆抗体的识别表位进行了初步定位。结果显示:(1)在4株抗N蛋白单克隆抗体中,1-1C2、1-1D6和2-2E5不与HCoV-OC43和HCoV-229E及其N蛋白发生交叉反应,为SARS-CoVN蛋白特异性抗体;(2)2-8F11、1-1D6和2-2E5针对的抗原表位位于SARS-CoVN蛋白的aa30-60,1-1C2针对的抗原表位则位于SARS-CoVN蛋白的aa170-184。这一研究为阐明SARS-CoVN蛋白的免疫学特征,建立特异性免疫诊断技术和研究其致病机制提供了必要的依据和材料
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Last time updated on 16/06/2016