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2016 ; 213
(5
): 687-96
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The ETS1 transcription factor is required for the development and
cytokine-induced expansion of ILC2
#MMPMID27069114
Zook EC
; Ramirez K
; Guo X
; van der Voort G
; Sigvardsson M
; Svensson EC
; Fu YX
; Kee BL
J Exp Med
2016[May]; 213
(5
): 687-96
PMID27069114
show ga
Group 2 innate lymphoid cells (ILC2s) are a subset of ILCs that play a protective
role in the response to helminth infection, but they also contribute to allergic
lung inflammation. Here, we report that the deletion of the ETS1 transcription
factor in lymphoid cells resulted in a loss of ILC2s in the bone marrow and lymph
nodes and that ETS1 promotes the fitness of the common progenitor of all ILCs.
ETS1-deficient ILC2 progenitors failed to up-regulate messenger RNA for the E
protein transcription factor inhibitor ID2, a critical factor for ILCs, and these
cells were unable to expand in cytokine-driven in vitro cultures. In vivo, ETS1
was required for the IL-33-induced accumulation of lung ILC2s and for the
production of the T helper type 2 cytokines IL-5 and IL-13. IL-25 also failed to
elicit an expansion of inflammatory ILC2s when these cells lacked ETS1. Our data
reveal ETS1 as a critical regulator of ILC2 expansion and cytokine production and
implicate ETS1 in the regulation of Id2 at the inception of ILC2 development.
|*Immunity, Innate
[MESH]
|Animals
[MESH]
|Cytokines/genetics/*immunology
[MESH]
|Inhibitor of Differentiation Protein 2/genetics/*immunology
[MESH]