Follicular helper T cells as cognate regulators of B cell immunity.

Follicular helper T cells as cognate regulators of B cell immunity.
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DOI:
10.1016/j.coi.2009.05.010
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发表时间:
2009-06
影响因子:
7
通讯作者:
McHeyzer-Williams MG
McHeyzer-Williams MG
中科院分区:
医学2区
文献类型:
--
作者:
McHeyzer-Williams LJ;Pelletier N;Mark L;Fazilleau N;McHeyzer-Williams MG

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滤泡辅助性T(TFH)细胞是一类专门对特异性抗原的B细胞免疫进行同源调控的辅助性T细胞。在首次与抗原致敏的B细胞接触时,生发中心前效应TFH细胞促进B细胞克隆扩增、抗体同种型转换、浆细胞分化以及生发中心的诱导。相反,在生发中心内,TFH细胞调节表达高亲和力变异B细胞受体的特异性抗原生发中心B细胞的命运,以促进记忆B细胞和长寿浆细胞的发育。近期研究揭示了多种控制TFH细胞发育以及特异性抗原TFH细胞功能亚型的信号,包括在体内加速记忆B细胞对抗原再次刺激反应的记忆TFH细胞。
Follicular helper T (TFH) cells are a class of helper T cells specialized in the cognate control of antigen-specific B cell immunity. Upon first contact with antigen-primed B cells, pre-germinal center effector TFH cells promote B cell clonal expansion, antibody isotype switch, plasma cell differentiation and the induction of germinal centers. In contrast, within germinal centers, TFH cells regulate the fate of antigen-specific GC B cells expressing high-affinity variant B cell receptors to promote memory B cell and long-lived plasma cell development. Recent studies unravel multiple signals controlling TFH development and functional sub-types of antigen-specific TFH cells, including memory TFH cells that accelerate memory B cell responses to antigen re-challenge in vivo.
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