Jackson-Jones, L. H., Duncan, S. M., Magalhaes, M. S., Campbell, S. M., Maizels, R. M. , McSorley, H. J., Allen, J. E. and Bénézech, C. (2016) Fat-associated lymphoid clusters control local IgM secretion during pleural infection and lung inflammation. Nature Communications, 7, 12651. (doi: 10.1038/ncomms12651) (PMID:27582256) (PMCID:PMC5025788)
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Abstract
Fat-associated lymphoid clusters (FALC) are inducible structures that support rapid innate-like B-cell immune responses in the serous cavities. Little is known about the physiological cues that activate FALCs in the pleural cavity and more generally the mechanisms controlling B-cell activation in FALCs. Here we show, using separate models of pleural nematode infection with Litomosoides sigmodontis and Altenaria alternata induced acute lung inflammation, that inflammation of the pleural cavity rapidly activates mediastinal and pericardial FALCs. IL-33 produced by FALC stroma is crucial for pleural B1-cell activation and local IgM secretion. However, B1 cells are not the direct target of IL-33, which instead requires IL-5 for activation. Moreover, lung inflammation leads to increased IL-5 production by type 2 cytokine-producing innate lymphoid cells (ILC2) in the FALC. These findings reveal a link between inflammation, IL-33 release by FALC stromal cells, ILC2 activation and pleural B-cell activation in FALCs, resulting in local and antigen-specific IgM production.
Item Type: | Articles |
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Additional Information: | This work was supported by MRC UK grants to J.E.A. (MR/K01207X/1) and C.B. (MR/M011542/1). |
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Maizels, Professor Rick |
Authors: | Jackson-Jones, L. H., Duncan, S. M., Magalhaes, M. S., Campbell, S. M., Maizels, R. M., McSorley, H. J., Allen, J. E., and Bénézech, C. |
College/School: | College of Medical Veterinary and Life Sciences > School of Infection & Immunity |
Journal Name: | Nature Communications |
Publisher: | Nature Research |
ISSN: | 2041-1723 |
ISSN (Online): | 2041-1723 |
Copyright Holders: | Copyright © 2016 The Authors |
First Published: | First published in Nature Communications 7: 12651 |
Publisher Policy: | Reproduced under a Creative Commons License |
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