汉滩病毒结构蛋白与该病毒感染诱导表达的多种热休克蛋白的研究  

Viral structural proteins are associated specifically with a set of Heat shock proteins including HSP70, GRP94 and HSP27 in the brain tissues of suckling mice experimentally infected with Hantaan virus

作　　者：高娟[1] 杨守京[1] 刘彦仿[1] 

机构地区：[1]第四军医大学病理学教研室,西安710032

出　　处：《中华传染病杂志》2004年第5期298-301,共4页Chinese Journal of Infectious Diseases

基　　金：国家自然科学基金资助项目(30271186)

摘　　要：目的研究汉滩病毒(HTNV)感染乳鼠诱导其脑组织表达热休克蛋白(HSPs)及其与病毒结构蛋白的相互关系。方法选出生2～3d的昆明乳鼠实验性感染HTNV,取感染后8d的乳鼠脑组织制成组织匀浆液,用双特异性抗体夹心酶联免疫吸附法(ELISA)及免疫共沉淀方法分析病毒核衣壳蛋白(HTNVNP)和囊膜糖蛋白G2(HTNVG2)与94000葡萄糖调节蛋白(GRP94)、HSP70、HSP27三种HSPs的关系。结果HTNV感染乳鼠诱导其脑组织表达GRP94、HSP70;HTNVNP同时与GRP94、HSP70、HSP27相互作用,呈复合物形式存在;HTNVG2也与HTNVNP和HSP27存在相互作用,形成HTNVG2NPHSP27非共价复合物。结论HTNV感染可诱导表达多种HSPs,这些HSPs同时与病毒结构蛋白发生相互作用形成非共价复合物,表明在病毒感染和病毒结构蛋白的合成、转运等过程中有多种HSPs伴侣分子的参与,其相互作用机制有待进一步研究。Objective To study Heat shock proteins (HSPs) induction and their association with Hantaan virus (HTNV) structural proteins in the brain tissues of mice experimentally infected with HTNV 76～118. Methods Newborn mice less than 72 h of age were experimentally infected with HTNV by intracerebral inoculation. The brains of mice at the 8th day post infection were removed and prepared for tissue extracts. The possible interaction or association of Hantaan virus nucleocapsid protein (HTNV NP) and glycoprotein G2 (HTNV G2) with GRP94, HSP70 and HSP27 were analyzed by double specific antibo dies sandwich ELISA and immunoprecipitation methods. Results HTNV infection induced the expression a set of HSPs including GRP94 and HSP70 in the brain tissues of mice experimentally infected with HTNV. HTNV NP was associated with GRP94, HSP70 and HSP27, which led to formation of HTNV NP HSP70 GRP94 HSP27 complexes. It was also observed that HTNV G2 was associated with NP and HSP27, which led to formation of HTNV G2 NP HSP27 complexes. Conclusions HTNV infection induces expression of a set of HSPs, which were associate with viral structural proteins in the brain tissues of mice experimentally infected with HTNV. This association may demonstrate the chaperone roles of HSPs in the synthesis, transportation and maturity of viral proteins during viral replication in the host cells.

关 键 词：汉滩病毒 结构蛋白 病毒感染 诱导 表达 多种热休克蛋白 

分 类 号：R512.8[医药卫生—内科学]