Abstract:
:Innate lymphoid cells (ILCs) contribute to host defence and tissue repair but can induce immunopathology. Recent work has revealed tissue-specific roles for ILCs; however, the question of how a small population has large effects on immune homeostasis remains unclear. We identify two mechanisms that ILC3s utilise to exert their effects within intestinal tissue. ILC-driven colitis depends on production of granulocyte macrophage-colony stimulating factor (GM-CSF), which recruits and maintains intestinal inflammatory monocytes. ILCs present in the intestine also enter and exit cryptopatches in a highly dynamic process. During colitis, ILC3s mobilize from cryptopatches, a process that can be inhibited by blocking GM-CSF, and mobilization precedes inflammatory foci elsewhere in the tissue. Together these data identify the IL-23R/GM-CSF axis within ILC3 as a key control point in the accumulation of innate effector cells in the intestine and in the spatio-temporal dynamics of ILCs in the intestinal inflammatory response.
journal_name
Elifejournal_title
eLifeauthors
Pearson C,Thornton EE,McKenzie B,Schaupp AL,Huskens N,Griseri T,West N,Tung S,Seddon BP,Uhlig HH,Powrie Fdoi
10.7554/eLife.10066subject
Has Abstractpub_date
2016-01-18 00:00:00pages
e10066issn
2050-084Xjournal_volume
5pub_type
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