Intraepithelial type 1 innate lymphoid cells are a unique subset of IL-12- and IL-15-responsive IFN-γ-producing cells.

Intraepithelial type 1 innate lymphoid cells are a unique subset of IL-12- and IL-15-responsive IFN-γ-producing cells.
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DOI:
10.1016/j.immuni.2013.02.010
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发表时间:
2013-04-18
期刊:
影响因子:
32.4
通讯作者:
Colonna M
Colonna M
中科院分区:
医学1区
文献类型:
--
作者:
Fuchs A;Vermi W;Lee JS;Lonardi S;Gilfillan S;Newberry RD;Cella M;Colonna M

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Mucosal innate lymphoid cell (ILC) subsets promote immune responses to pathogens by producing distinct signature cytokines in response to changes in the cytokine microenvironment. We previously identified human ILC3 distinguished by interleukin-22 (IL-22) secretion. Here we characterized a human ILC1 subset that produced Interferon-γ in response to IL-12 and IL-15, had a unique integrin profile, intraepithelial location, hallmarks of TGF-β imprinting and a memory-activated phenotype. Because tissue-resident memory CD8+ T cells share this profile, intraepithelial ILC1 may be their innate counterparts. In mice, intraepithelial ILC1 were distinguished by CD160 expression and required Nfil3-and Tbx21-encoded transcription factors for development, but not IL-15 receptor-α, indicating that intraepithelial ILC1 are distinct from conventional NK cells. Intraepithelial ILC1 were amplified in Crohn’s disease patients and contributed to pathology in the anti-CD40-induced colitis model in mice. Thus, intraepithelial ILC1 may initiate interferon-γ responses against pathogens, but contribute to pathology when dysregulated.
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