摘要
T细胞辅助B细胞是适应性免疫和免疫记忆生成的基础。滤泡辅助性T细胞(Tfh)是辅助B细胞的主要T细胞亚群,其主要转录因子为Bcl6。Tfh细胞的明显特征为表达CXCR5、程序性死亡因子-1(PD-1)、IL-21和ICOS,同时Blimp-1表达下调。在HIV-1慢性感染过程中Tfh细胞累积增多,从而导致B细胞调节异常,发生功能性改变,这可能是HIV-1逃避体液免疫应答的根源。
The assistance of T cells in antibody production of B cells is the fundamental of adaptive im- munity and the immunological memory. T follicular helper (Tfh) cell is the major T cell subset to help B cells. Tfh cell expresses transcription regulator factor Bcl6. The most distinguishing features of Tfh cell are the high expression of CXCR5 ,PD-1 ,IL-21 and ICOS and lack expression of Blimp-1. The accumulation of Tfh cell dur- ing chronic HIV infection may drive B cell dysregulation, together with altered function, may be at the root of humoral immunity evasion.
出处
《国际免疫学杂志》
CAS
2013年第3期177-181,共5页
International Journal of Immunology
基金
国家自然科学基金(81271824,81202364),黑龙江省研究生创新科研项目(YJSCX2012-232HLJ)