Background:The physiological activity of gut microbial metabolites has recently attracted much attention. Results: A gut microbial metabolite of linoleic acid, 10-hydroxy-cis-12-octadecenoic acid (HYA), ameliorates intestinal epithelial barrier impairments by regulating TNFR2 expression via the GPR40-MEK-ERK pathway. Conclusion: HYA-induced GPR40 signaling contributes to the intestinal homeostasis. Significance: Our findings indicate a novel function of GPR40 in the inflamed intestine.
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