Intestinal bacterial colonization induces mutualistic regulatory T cell responses

Geuking, Markus B; Cahenzli, Julia; Lawson, Melissa A E; Ng, Derek C K; Slack, Emma; Hapfelmeier, Siegfried; McCoy, Kathy D; Macpherson, Andrew J (2011). Intestinal bacterial colonization induces mutualistic regulatory T cell responses. Immunity, 34(5), pp. 794-806. Cambridge, Mass.: Cell Press 10.1016/j.immuni.2011.03.021

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Mammals harbor a dense commensal microbiota in the colon. Regulatory T (Treg) cells are known to limit microbe-triggered intestinal inflammation and the CD4+ T cell compartment is shaped by the presence of particular microbes or bacterial compounds. It is, however, difficult to distinguish whether these effects reflect true mutualistic immune adaptation to intestinal colonization or rather idiosyncratic immune responses. To investigate truly mutualistic CD4+ T cell adaptation, we used the altered Schaedler flora (ASF). Intestinal colonization resulted in activation and de novo generation of colonic Treg cells. Failure to activate Treg cells resulted in the induction of T helper 17 (Th17) and Th1 cell responses, which was reversed by wild-type Treg cells. Efficient Treg cell induction was also required to maintain intestinal homeostasis upon dextran sulfate sodium-mediated damage in the colon. Thus, microbiota colonization-induced Treg cell responses are a fundamental intrinsic mechanism to induce and maintain host-intestinal microbial T cell mutualism.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Service Sector > Institute for Infectious Diseases > Research
04 Faculty of Medicine > Department of Gastro-intestinal, Liver and Lung Disorders (DMLL) > Clinic of Visceral Surgery and Medicine > Gastroenterology
04 Faculty of Medicine > Department of Gastro-intestinal, Liver and Lung Disorders (DMLL) > Clinic of Visceral Surgery and Medicine > Visceral Surgery

UniBE Contributor:

Geuking, Markus; Hapfelmeier, Siegfried Hektor; McCoy, Kathleen and Macpherson, Andrew

ISSN:

1074-7613

Publisher:

Cell Press

Language:

English

Submitter:

Siegfried Hektor Hapfelmeier-Balmer

Date Deposited:

04 Oct 2013 14:22

Last Modified:

15 May 2015 10:48

Publisher DOI:

10.1016/j.immuni.2011.03.021

PubMed ID:

21596591

Web of Science ID:

000291456500017

URI:

https://boris.unibe.ch/id/eprint/7755 (FactScience: 213081)

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