The microbial metabolites, short-chain fatty acids, regulate colonic Treg cell homeostasis.

The microbial metabolites, short-chain fatty acids, regulate colonic Treg cell homeostasis.
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DOI:
10.1126/science.1241165
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发表时间:
2013-08-02
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Garrett WS
Garrett WS
中科院分区:
其他
文献类型:
--
作者:
Smith PM;Howitt MR;Panikov N;Michaud M;Gallini CA;Bohlooly-Y M;Glickman JN;Garrett WS

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表达转录因子Foxp3的调节性T细胞(Tregs)对调节肠道炎症至关重要。候选微生物方法已经确定了可以影响肠道免疫反应的细菌种类和菌株特异性分子,包括调节Treg反应的物种。由于不是所有的人类和小鼠都携带相同的细菌菌株,我们假设存在更普遍的因素来调节结肠treg的数量和功能。我们确定短链脂肪酸(SCFA),肠道微生物来源的细菌发酵产物,调节结肠Treg池的大小和功能,并以Ffar2(GPR43)依赖的方式预防小鼠结肠炎。我们的研究表明,一类丰富的微生物代谢物是适应性免疫微生物群共同适应的基础,并促进结肠内稳态和健康。
Regulatory T cells (Tregs) that express the transcription factor Foxp3 are critical for regulating intestinal inflammation. Candidate microbe approaches have identified bacterial species and strain-specific molecules that can affect intestinal immune responses, including species that modulate Treg responses. Because neither all humans nor mice harbor the same bacterial strains, we posited that more prevalent factors exist that regulate the number and function of colonic Tregs. We determined that short chain fatty acids (SCFA), gut microbiota-derived bacterial fermentation products, regulate the size and function of the colonic Treg pool and protect against colitis in a Ffar2(GPR43)-dependent manner in mice. Our study reveals that a class of abundant microbial metabolites underlies adaptive immune microbiota co-adaptation and promotes colonic homeostasis and health.
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