H9N2亚型猪流感病毒血凝素重组蛋白在LAT诊断方法中的应用
Animal Husbandry & Veterinary Medicine（2011）
Abstract
利用原核表达的H9亚型猪流感病毒血凝素蛋白做为抗原,建立了检测H9亚型猪流感病毒抗体的乳胶凝集试验方法.阳性重组质粒pGEX-HA转化大肠杆菌BL21获得了原核表达,表达的血凝素蛋白位于包涵体中,包涵体经变性、复性处理,利用复性产物作为抗原,经碳二亚胺(EDAC)将表达产物和羧基化的乳胶共价偶联,建立了该LAT检测方法.结果表明应用HA重组蛋白作为诊断抗原建立的检测方法具有特异性强、敏感性高、重复性好的特点,可用于H9亚型猪流感抗体水平监测、流行病学调查和现地疫病普查.
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