脂筏在人类疱疹病毒6型装配中的作用

为了探讨脂筏在人类疱疹病毒6型(HHV-6)装配中的作用,用HHV-6 GS株感染HSB2细胞,用非离子去污剂Triton X-100提取脂筏成分,利用Western blot分析HHV-6包膜糖蛋白与脂筏的相关性.并用免疫荧光双标记的方法,从分子共定位的角度研究HHV-6糖蛋白B(gB)与GPI(glycosyl-phosphatidyl inosital)锚固蛋白CD59分子以及神经节苷脂GMI(monosialotetrahexosyl ganglioside)分子之间的表达与分布关系.结果发现HHV-6包膜糖蛋白B、H、L、Q1和Q2(gB、gH、gL、gQ1和gQ2)分布在脂筏部位.激光共聚焦显微镜可观察到CD59分子及GM1均与HHV-6包膜糖蛋白B有着相同的分布,即脂筏提供HHV-6装配的平台.关于脂筏在人类疱疹病毒6型装配中的作用,这是第一次报道.

Role of Lipid Raft in Assembly of Human Herpesvirus 6

To explore the role of lipid raft in assembly of human herpesvirus 6, the HHV-6 GS strain was applied to infect the HSB2 cells and then the lipid raft composition was extracted from the cells with non-ionic detergent Triton-X 100. The relationship between the HHV-6 envelope glycoprotein and lipid raft was analyzed by Western Blot. Immunofluorescence double-staining was used to study the colocalization of the HHV-6 glycoprotein B(gB) with GPI anchored protein CD59 and ganglioside GM respectively. HHV-6 envelope glycoprotein B, H, L, Q1 and Q2 (gB, gH, gL, gQ1 and gQ2) were all existed in the lipid raft. Moreover, CD59 and HHV-6 envelope glycoprotein B showed the same localization through the confocal microscope. We concluded the lipid raft provided the platform for HHV-6 assembly. This is the first report concerning to the role of lipid raft in assembly of human Herpesvirus 6.