Lymphoid-Tissue-Resident Commensal Bacteria Promote Members of the IL-10 Cytokine Family to Establish Mutualism.

TitleLymphoid-Tissue-Resident Commensal Bacteria Promote Members of the IL-10 Cytokine Family to Establish Mutualism.
Publication TypeJournal Article
Year of Publication2016
AuthorsFung, TC, Bessman, NJ, Hepworth, MR, Kumar, N, Shibata, N, Kobuley, D, Wang, K, Ziegler, CGK, Goc, J, Shima, T, Umesaki, Y, R Sartor, B, Sullivan, KV, Lawley, TD, Kunisawa, J, Kiyono, H, Sonnenberg, GF
JournalImmunity
Volume44
Issue3
Pagination634-46
Date Published2016 Mar 15
ISSN1097-4180
Abstract

<p>Physical separation between the mammalian immune system and commensal bacteria is necessary to limit chronic inflammation. However, selective species of commensal bacteria can reside within intestinal lymphoid tissues of healthy mammals. Here, we demonstrate that lymphoid-tissue-resident commensal bacteria (LRC) colonized murine dendritic cells and modulated their cytokine production. In germ-free and antibiotic-treated mice, LRCs colonized intestinal lymphoid tissues and induced multiple members of the IL-10 cytokine family, including dendritic-cell-derived IL-10 and group 3 innate lymphoid cell (ILC3)-derived IL-22. Notably, IL-10 limited the development of pro-inflammatory Th17 cell responses, and IL-22 production enhanced LRC colonization in the steady state. Furthermore, LRC colonization protected mice from lethal intestinal damage in an IL-10-IL-10R-dependent manner. Collectively, our data reveal a unique host-commensal-bacteria dialog whereby selective subsets of commensal bacteria interact with dendritic cells to facilitate tissue-specific responses that are mutually beneficial for both the host and the microbe.</p>

DOI10.1016/j.immuni.2016.02.019
Alternate JournalImmunity
PubMed ID26982365
Grant ListDP5 OD012116 / OD / NIH HHS / United States
R56 AI114724 / AI / NIAID NIH HHS / United States