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Microbiotas from Humans with Inflammatory Bowel Disease Alter the Balance of Gut Th17 and RORγt Regulatory T Cells and Exacerbate Colitis in Mice. | LitMetric

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Article Abstract

Microbiota are thought to influence the development and progression of inflammatory bowel disease (IBD), but determining generalizable effects of microbiota on IBD etiology requires larger-scale functional analyses. We colonized germ-free mice with intestinal microbiotas from 30 healthy and IBD donors and determined the homeostatic intestinal T cell response to each microbiota. Compared to microbiotas from healthy donors, transfer of IBD microbiotas into germ-free mice increased numbers of intestinal Th17 cells and Th2 cells and decreased numbers of RORγt Treg cells. Colonization with IBD microbiotas exacerbated disease in a model where colitis is induced upon transfer of naive T cells into Rag1 mice. The proportions of Th17 and RORγt Treg cells induced by each microbiota were predictive of human disease status and accounted for disease severity in the Rag1 colitis model. Thus, an impact on intestinal Th17 and RORγt Treg cell compartments emerges as a unifying feature of IBD microbiotas, suggesting a general mechanism for microbial contribution to IBD pathogenesis.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6512335PMC
http://dx.doi.org/10.1016/j.immuni.2018.12.015DOI Listing

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