Abstract:
:Innate lymphoid cells (ILCs) are a recently identified family of heterogeneous immune cells that can be divided into three groups based on their differential developmental requirements and expression of effector cytokines. Among these, group 2 ILCs produce the type 2 cytokines interleukin-5 (IL-5) and IL-13 and promote type 2 inflammation in the lung and intestine. However, whether group 2 ILCs reside in the skin and contribute to skin inflammation has not been characterized. We identify a population of skin-resident group 2 ILCs present in healthy human skin that are enriched in lesional human skin from atopic dermatitis (AD) patients. Group 2 ILCs were also found in normal murine skin and were critical for the development of inflammation in a murine model of AD-like disease. Remarkably, in contrast to group 2 ILC responses in the intestine and lung, which are critically regulated by IL-33 and IL-25, group 2 ILC responses in the skin and skin-draining lymph nodes were independent of these canonical cytokines but were critically dependent on thymic stromal lymphopoietin (TSLP). Collectively, these results demonstrate an essential role for IL-33- and IL-25-independent group 2 ILCs in promoting skin inflammation.
journal_name
Sci Transl Medjournal_title
Science translational medicineauthors
Kim BS,Siracusa MC,Saenz SA,Noti M,Monticelli LA,Sonnenberg GF,Hepworth MR,Van Voorhees AS,Comeau MR,Artis Ddoi
10.1126/scitranslmed.3005374subject
Has Abstractpub_date
2013-01-30 00:00:00pages
170ra16issue
170eissn
1946-6234issn
1946-6242pii
5/170/170ra16journal_volume
5pub_type
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