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MDV-1 VP22增强鸡传染性法氏囊炎病毒VP2DNA免疫作用 被引量:3

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摘要 马立克氏病病毒(Marek's disease virus,MDV)被膜成分中的VP22具有蛋白转导功能.将鸡传染性法氏囊炎病毒(infectious bursal disease virus,IBDV)VP2与MDV-VP22同时插入pcDNA3.1构建融合蛋白表达载体,在COS-1细胞中进行暂态表达.结果表明:VP22并不能促进VP2向周围未转染细胞转导,即VP22对VP2没有明显的蛋白转导作用,相反,VP2影响VP22在细胞内的正常定位.然而,通过小鼠股四头肌免疫注射PEI包裹的裸质粒DNA进行DNA免疫,以间接ELISA测定VP2抗体效价,FACS检测T细胞亚类.发现,虽然VP22没有明显促进VP2的体液免疫应答,但脾脏淋巴细胞分群结果表明,VP22-VP2融合蛋白表达载体免疫组和VP2质粒免疫组的CD3+T细胞数量显著高于eGFP-VP2组和对照组(P<0.05),融合蛋白表达载体免疫组小鼠CD8+/CD4+T细胞的比例与VP2质粒免疫组相比,明显增强(P<0.05),与对照组相比差异极显著(P<0.01).这表明VP22对VP2的特异性细胞免疫反应具有一定增强作用.
出处 《中国科学(C辑)》 CSCD 北大核心 2008年第9期873-878,共6页 Science in China(Series C)
基金 国家自然科学基金(批准号:30371070) 国家高技术研究发展计划(批准号:2006AA10A205) 全国博士学位论文作者专项资金(批准号:200256)资助项目
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二级参考文献34

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