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Curr Opin Immunol. 2013 Dec;25(6):738-44. doi: 10.1016/j.coi.2013.07.013. Epub 2013 Aug 31.

Innate lymphoid cells and allergic inflammation.

Author information

1
Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.

Abstract

Group 2 innate lymphoid cells (ILC2s) play critical roles in anti-helminth immunity and airway epithelial repair. Recently, these cells have also emerged as key players in the development of allergic inflammation at multiple barrier surfaces. ILC2s arise from common lymphoid progenitors in the bone marrow, are dependent on the transcription factors RORα, GATA3, and TCF-1 and produce the type 2 cytokines IL-4, IL-5, IL-9, and/or IL-13. The epithelial cell-derived cytokines IL-25, IL-33, and TSLP regulate the activation and effector functions of ILC2s, and recent studies suggest that their responsiveness to these cytokines and other factors may depend on their tissue environment. In this review, we focus on recent advances in our understanding of how ILC2s are differentially regulated in the context of allergic inflammation and discuss the therapeutic potential of targeting ILC2s in the treatment of allergic diseases.

PMID:
24001372
PMCID:
PMC3989991
DOI:
10.1016/j.coi.2013.07.013
[Indexed for MEDLINE]
Free PMC Article

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