B cell- and T cell-intrinsic regulation of germinal centers by thymic stromal lymphopoietin signaling.

B cell- and T cell-intrinsic regulation of germinal centers by thymic stromal lymphopoietin signaling.
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DOI:
10.1126/sciimmunol.add9413
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发表时间:
2023-01-06
期刊:
影响因子:
24.8
通讯作者:
--
中科院分区:
医学1区
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--
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长寿命和高亲和力的抗体来源于生发中心(GC)的活性,但调节GC功能的细胞因子仍在鉴定中。在这里,我们表明,胸腺基质淋巴细胞生成素(TSLP)信号调节GC和抗原特异性抗体反应的幅度。GC B细胞和T滤泡辅助细胞(TFH)均上调表面TSLP受体(TSLPR)的表达,但TSLPR的细胞特异性缺失导致对GC形成和抗体产生的不同影响。T细胞上的TSLPR信号传导支持抗原特异性B细胞的保留和TFH分化,而B细胞中的TSLPR调节抗原特异性记忆B细胞的产生。两种细胞类型中的TSLPR促进干扰素调节因子4(IRF4)表达,这对于有效的GC活性是重要的。总的来说,我们确定了一个以前不受重视的细胞因子调节GC,并确定了这种信号通路如何差异调节B和T细胞在GC的反应。TSLP信号传导在生发中心内的B细胞选择和形成的调节中发挥独特的和细胞特异性的作用。
Long-lived and high-affinity antibodies are derived from germinal center (GC) activity, but the cytokines that regulate GC function are still being identified. Here, we show that thymic stromal lymphopoietin (TSLP) signaling regulates the GC and the magnitude of antigen-specific antibody responses. GC B cells and T follicular helper cells (TFH) both upregulate the expression of surface TSLP receptor (TSLPR), but cell-specific loss of TSLPR results in distinct effects on GC formation and antibody production. TSLPR signaling on T cells supports the retention of antigen-specific B cells and TFH differentiation, whereas TSLPR in B cells regulates the generation of antigen-specific memory B cells. TSLPR in both cell types is promotes interferon regulatory factor 4 (IRF4) expression, which is important for efficient GC activity. Overall, we identified a previously unappreciated cytokine regulator of GCs, and identified how this signaling pathway differentially regulates B and T cell responses in the GC. TSLP signaling enacts distinct and cell-specific roles in regulating formation of and B cell selection within germinal centers.
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