Macrophages in the synovial lining niche initiate neutrophil recruitment and articular inflammation.
Macrophages in the synovial lining niche initiate neutrophil recruitment and articular inflammation.
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DOI:
10.1084/jem.20220595
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发表时间:
2023-08-07
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影响因子:
--
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中科院分区:
文献类型:
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Using antigen-induced arthritis (AIA) model, Zec et al. show that synovial lining macrophages undergo IRF5-dependent activation and produce CXCL1 as a result of antigen recognition. Consequently, neutrophils are preferentially recruited in the synovial lining niche at the onset of inflammation. The first immune-activating changes within joint resident cells that lead to pathogenic leukocyte recruitment during articular inflammation remain largely unknown. In this study, we employ state-of-the-art confocal microscopy and image analysis in a systemic, whole-organ, and quantitative way to present evidence that synovial inflammation begins with the activation of lining macrophages. We show that lining, but not sublining macrophages phagocytose immune complexes containing the model antigen. Using the antigen-induced arthritis (AIA) model, we demonstrate that on recognition of antigen–antibody complexes, lining macrophages undergo significant activation, which is dependent on interferon regulatory factor 5 (IRF5), and produce chemokines, most notably CXCL1. Consequently, at the onset of inflammation, neutrophils are preferentially recruited in the vicinity of antigen-laden macrophages in the synovial lining niche. As inflammation progresses, neutrophils disperse across the whole synovium and form swarms in synovial sublining during resolution. Our study alters the paradigm of lining macrophages as immunosuppressive cells to important instigators of synovial inflammation.
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DOI:
10.2174/1874312901105010100
发表时间:
2011
期刊:
The open rheumatology journal
影响因子:
--
作者:
Smith MD
通讯作者:
Smith MD
影响因子:
3.7
作者:
Di Domizio J;Dorta-Estremera S;Cao W
通讯作者:
Cao W
影响因子:
3.7
作者:
Charles JP;Cappellari O;Spence AJ;Hutchinson JR;Wells DJ
通讯作者:
Wells DJ
影响因子:
14.8
作者:
Kusumbe,Anjali P.;Ramasamy,Saravana K.;Adams,Ralf H.
通讯作者:
Adams,Ralf H.
影响因子:
3.3
作者:
Kundu, Sunanda;Ghosh, Parashar;Chatterjee, Mitali
通讯作者:
Chatterjee, Mitali