Cutting Edge: Ezrin Regulates Inflammation by Limiting B Cell IL-10 Production.
Cutting Edge: Ezrin Regulates Inflammation by Limiting B Cell IL-10 Production.
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DOI:
10.4049/jimmunol.1502098
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发表时间:
2016-01-15
期刊:
影响因子:
--
通讯作者:
Gupta N
中科院分区:
文献类型:
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作者:
Pore D;Matsui K;Parameswaran N;Gupta N
Interleukin 10 (IL-10) produced by B cells is important for controlling inflammation, thus underscoring the need to identify mechanisms regulating its production. Here, we demonstrate that conditional deletion of ezrin in B cells increases IL-10 production induced by TLR4 ligation. The MyD88-independent TRIF-IRF3 pathway is required for Ezrin-deficient B cells to produce higher IL-10 upon LPS stimulation. Treatment of B cells with a novel small molecule inhibitor of ezrin induces its dephosphorylation, and increases LPS-induced NF-κB and IRF3 activation and IL-10 secretion, indicating a role for Thr567 phosphorylation of ezrin in limiting IL-10. Loss of ezrin in B cells results in dampened pro-inflammatory response to a sub-lethal dose of LPS in vivo, which is dependent on increased IL-10 production. Taken together, our data yield new insights into molecular and membrane-cytoskeletal regulation of B cell IL-10 production, and reveal ezrin as a potential therapeutic target in inflammatory diseases.