Commensal microbe-derived butyrate induces the differentiation of colonic regulatory T cells
- PMID: 24226770
- DOI: 10.1038/nature12721
Commensal microbe-derived butyrate induces the differentiation of colonic regulatory T cells
Erratum in
- Nature. 2014 Feb 13;506(7487):254
Abstract
Gut commensal microbes shape the mucosal immune system by regulating the differentiation and expansion of several types of T cell. Clostridia, a dominant class of commensal microbe, can induce colonic regulatory T (Treg) cells, which have a central role in the suppression of inflammatory and allergic responses. However, the molecular mechanisms by which commensal microbes induce colonic Treg cells have been unclear. Here we show that a large bowel microbial fermentation product, butyrate, induces the differentiation of colonic Treg cells in mice. A comparative NMR-based metabolome analysis suggests that the luminal concentrations of short-chain fatty acids positively correlates with the number of Treg cells in the colon. Among short-chain fatty acids, butyrate induced the differentiation of Treg cells in vitro and in vivo, and ameliorated the development of colitis induced by adoptive transfer of CD4(+) CD45RB(hi) T cells in Rag1(-/-) mice. Treatment of naive T cells under the Treg-cell-polarizing conditions with butyrate enhanced histone H3 acetylation in the promoter and conserved non-coding sequence regions of the Foxp3 locus, suggesting a possible mechanism for how microbial-derived butyrate regulates the differentiation of Treg cells. Our findings provide new insight into the mechanisms by which host-microbe interactions establish immunological homeostasis in the gut.
Comment in
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Mucosal immunology: Bacteria get T(Reg) cells into shape.Nat Rev Immunol. 2014 Jan;14(1):2-3. doi: 10.1038/nri3583. Epub 2013 Nov 29. Nat Rev Immunol. 2014. PMID: 24287865 No abstract available.
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