摘要滤泡辅助性T细胞(Tfh)在生发中心为B细胞发育提供辅助.HIV感染会破坏宿主淋巴滤泡结构,进而影响Tfh的数量和功能,最终导致B细胞功能失调.这一系列病理改变的同时,HIV能潜伏在Tfh内逃避体液免疫和细胞免疫的清除;同时,Tfh为HIV复制提供场所.最终,HIV会导致被感染的CD4+T淋巴细胞进行性破坏、高 γ球蛋白血症以及记忆性B细胞减少.

abstractsT follicular helper cells(Tfh)possess the function to induce efficient B cell maturation in germinal center (GC).However,HIV infection can destroy the structure of lymphoid follicles,and disturb the quantity and function of Tfh,resulting in the dysfunction of B cells.Meanwhile,HIV may remain dormant in the Tfh after invading host and escape the elimination of immunologic system.Consequently,the Tfh turns into the sanctuary of HIV.By the above mentioned mechanism,HIV infection leads to the progressive damage of CD4 + T lymphocytes, hypergammaglobulinemia and the loss of memory B lymphocytes.