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- W4313373573 abstract "Abstract Interleukin-22 (IL-22) is critical in gut immunity. Both innate lymphocyte cells (ILCs) and CD4+ T cells produce IL-22. ILCs provide a rapid source of IL-22 that is essential for early protection of epithelial barrier function upon enteric infection and inflammatory insult, while T cells become the dominant source of IL-22 in the intestinal lamina propria during chronic intestinal inflammation. Microbiota is central in IL-22 production in the intestines, however, the factors that regulate IL-22 production in T cells and ILCs in the intestines, and the mechanisms involved remain unclear. We found that microbiota-derived short-chain fatty acids (SCFAs) promoted IL-22 production in T cells and ILCs through their inhibition of HDAC activity but not GPR43. Additionally, SCFAs upregulated IL-22 production by promoting aryl hydrocarbon receptor (AhR) and hypoxia-inducible factor (HIF)1α expression, which were differentially regulated by mTOR and Stat3 pathways. Furthermore, HIF1α directly bind to the il22 promoter, and SCFAs increased HIF1α binding to the il22 promoter through histone modification. SCFAs enhanced oxygen consumption and glycolysis, which mediated SCFA-induced IL-22 production. Hypixic condition enhanced the SCFAs induction of IL-22, and glucose facilitated SCFAs induction of IL-22 production in a dose-dependent manner. SCFA supplementation protected intestines from Citrobacter Rodentium infection and dextran sodium sulfate (DSS) insult, which was mediated by enhanced IL-22. SCFAs promoted T cell IL-22 production from patients with Crohn’s disease through inducing AHR and HIF1α. These findings establish the roles of SCFAs in inducing IL-22 production in T cells and ILCs to maintain the intestinal homeostasis." @default.
- W4313373573 created "2023-01-06" @default.
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- W4313373573 date "2020-05-01" @default.
- W4313373573 modified "2023-09-26" @default.
- W4313373573 title "Short chain fatty acids regulate T cell metabolism to promote IL-22 production and gut immunity" @default.
- W4313373573 doi "https://doi.org/10.4049/jimmunol.204.supp.83.4" @default.
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