T cell specific Cxcr5 deficiency prevents rheumatoid arthritis.

T cell specific Cxcr5 deficiency prevents rheumatoid arthritis.
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T细胞特异性CXCR5缺乏可防止类风湿关节炎。

DOI:
10.1038/s41598-017-08935-6
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发表时间:
2017-08-21
期刊:
影响因子:
4.6
通讯作者:
Förster R
Förster R
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Moschovakis GL;Bubke A;Friedrichsen M;Falk CS;Feederle R;Förster R

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趋化因子受体CXCR 5主要在B细胞和Tfh细胞上表达,并促进它们向B细胞滤泡迁移。在本研究中,我们研究了CXCL 13/CXCR 5轴在类风湿性关节炎(RA)发病机制中的作用,并特别探讨了CXCR 5介导的T和B细胞迁移对这种疾病的影响。采用胶原诱导性关节炎(CIA),我们确定CXCR 5作为诱导炎性自身免疫性关节炎的绝对必要因素。Cxcr 5缺陷小鼠和T细胞上选择性缺乏Cxcr 5的小鼠对CIA完全耐受,表现出受损的生发中心反应,并且未能对胶原蛋白II产生IgG 1抗体反应。B细胞中CXCR 5表达的选择性消融也导致CIA的抑制,这是由于次级淋巴器官(SLO)中GC反应减少和抗胶原II抗体产生受损。嵌合小鼠窝藏Cxcr 5-熟练和Cxcr 5-缺陷型免疫细胞揭示SLO,而不是滑膜组织作为隔室,CXCR 5介导的细胞迁移诱导自身免疫性炎症关节炎。因此,我们的数据表明,CXCR 5介导的Tfh细胞和B细胞在SLO中的共定位对于RA的诱导是绝对必要的,并且将CXCR 5和Tfh细胞鉴定为治疗RA的有希望的治疗靶点。
The chemokine receptor CXCR5 is primarily expressed on B cells and Tfh cells and facilitates their migration towards B cell follicles. In the present study we investigated the role of the CXCL13/CXCR5 axis in the pathogenesis of rheumatoid arthritis (RA) and specifically addressed the impact of CXCR5-mediated T and B cell migration in this disease. Employing collagen-induced arthritis (CIA) we identify CXCR5 as an absolutely essential factor for the induction of inflammatory autoimmune arthritis. Cxcr5-deficient mice and mice selectively lacking Cxcr5 on T cells were completely resistant to CIA, showed impaired germinal center responses and failed to mount an IgG1 antibody response to collagen II. Selective ablation of CXCR5 expression in B cells also led to suppression of CIA owing to diminished GC responses in secondary lymphoid organs (SLO) and impaired anti-collagen II antibody production. Chimeric mice harboring Cxcr5-proficient and Cxcr5-deficient immune cells revealed SLO and not the synovial tissue as the compartment where CXCR5-mediated cell migration induces autoimmune inflammation in arthritis. Thus our data demonstrate that CXCR5-mediated co-localization of Tfh cells and B cells in SLOs is absolutely essential for the induction of RA and identify CXCR5 and Tfh cells as promising therapeutic targets for the treatment of RA.
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