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可捕获HBV的preS1单克隆抗体的制备及性质初探
Authors
夏宁邵
张军
+3 more
朱子恒
李少伟
顾颖
Publication date
15 March 2008
Publisher
Abstract
用天然乙型肝炎病毒(HBV)颗粒(Dane颗粒和管状颗粒)和HBV前S1(preS1)区基因工程重组蛋白GST-preS1联合免疫Balb/c小鼠,经杂交瘤技术制备了7株单克隆抗体(mAb),采用ELISA、免疫捕获PCR等方式鉴定其有关特性.各株mAb分别为IgG1和IgG2a,轻链均为κ型.腹水mAb的滴度为1×107~1×109.用间接法ELISA显示,所有7株preS1 mAb均可以识别HBV天然抗原,其中mAb 4D11与HBV天然抗原的结合能力最强.通过竞争抑制法ELISA检测推断preS1(21-47)上至少含有两个B细胞表位,mAb 4D11、1G5、7B6和7H11具有共同的B细胞抗原识别位点;mAb 3H5、6F1和2A6识别另外一个位点.本研究获得的可与HBV天然抗原结合的preS1单抗为HBV preS1检测试剂的研制提供了重要工具,对HBV preS1具有中和免疫活性抗原的设计及相关研究有重要帮助
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Last time updated on 16/06/2016