项目名称: J亚群禽白血病病毒受体的鉴定及特性研究
项目编号: No.31201881
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 畜牧学与草地科学、兽医学、水产学
项目作者: 梅梅
作者单位: 扬州大学
项目金额: 21万元
中文摘要: J亚群禽白血病(ALV-J)不同于其他亚群的病毒,它不但引起肉鸡肿瘤,如今在我国还引起蛋鸡和地方品种鸡的肿瘤。尽管2006年国外鉴定出一种ALV-J受体NHE1,然而是否还存在其他的ALV-J受体?ALV-J如何启动感染?病毒进入细胞后的下游途径是什么?这些问题都不明确。所以本项目拟通过真核系统表达ALV-J env蛋白SU亚单位和兔IgGFc的融合蛋白,利用融合蛋白通过免疫共沉淀技术(CO-IP)捕捉易感细胞中ALV-J受体并进行质谱分析;PCR扩增可疑受体基因并在ALV-J非易感细胞中表达、重建受体蛋白,进一步通过免疫共沉淀试验和病毒感染试验鉴定受体的特异性和介导病毒感染的功能。研究结果将有助于揭示宿主细胞与病毒囊膜蛋白相互作用关系和致病机制。
中文关键词: J亚群禽白血病病毒;受体;分离;受体重建;鉴定
英文摘要: ALV-J is different from other subgroup ALVs,it can not only induce Chickens' tumor,but also can induce cancer of legehenne and chicken belong to localvariety.Although NHE1 has been idntified as a receptor for ALV-J,whether there exists another receptor for ALV-J 、how the virus initiate infection and what is the downstream pathway after virus entry into cells?These problems are still unclear. So this project is to express fusion protein which contain ALV-J envelope SU subunit and rabbit IgGFc,and catch the receptor through co-immunoprecipitations from susceptible cells and analyze by mass spectrum;and then amplify the gene of receptor by PCR and express on the surface of non-susceptible cells for reconstruction.After that,identify its specificity and ability of mediating infection.The results of this reserch will contribute to revealing the relationship between receptor and menbrane protein of virus and the virus pathogenesis.
英文关键词: avian leukosis virus subgroup J;receptor;identification;receptor destruction;characterization