Skin-Homing Regulatory B Cells Required for Suppression of Cutaneous Inflammation.

Skin-Homing Regulatory B Cells Required for Suppression of Cutaneous Inflammation.
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DOI:
10.1016/j.jid.2021.01.013
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发表时间:
2021-08
期刊:
The Journal of investigative dermatology
影响因子:
--
通讯作者:
Debes GF
Debes GF
中科院分区:
其他
文献类型:
--
作者:
Aira LE;Debes GF

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Pro- and anti-inflammatory B cell subsets that localize to unperturbed and inflamed skin are newly emerging components of the skin immune system. To test the relevance of regulatory B cells (Bregs) in the suppression of cutaneous inflammation, we asked whether impaired migration of these cells into the skin exacerbates skin inflammation. Using a mouse model with a B cell-specific tamoxifen-inducible deletion of α4β1-integrin we demonstrate that selective disruption of α4β1-integrin expression in B cells significantly decreases IL-10+ Bregs in inflamed skin while not affecting their counterparts in lymphoid tissues. Impaired skin-homing and reduced cutaneous accumulation of IL-10+ Bregs leads to a significant increase in clinical and histopathological parameters of inflammation in both psoriasiform skin inflammation and cutaneous delayed contact hypersensitivity. Thus, our data show a crucial function of skin-homing IL-10+ Bregs in the suppression of skin inflammation, supporting the notion that Bregs are critical players in the cutaneous environment during inflammatory skin diseases.
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IL-10+先天性B细胞是皮肤免疫系统的一部分,需要α4β1整合素才能在腹膜和发炎的皮肤之间迁移。
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