A gut microbial metabolite of linoleic acid, 10-hydroxy-cis-12-octadecenoic acid, ameliorates intestinal epithelial barrier impairment partially via GPR40-MEK-ERK pathway
| Autor: | Junki Miyamoto, Paolo Bergamo, Soichi Tanabe, Takuya Suzuki, Kanako Hirano, Makoto Arita, Jun Ogawa, Mauro Rossi, Shigenobu Kishino, Ikuo Kimura, Taichi Mizukure, Si Bum Park |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
linoleic acid
MAP Kinase Signaling System colitis Linoleic acid Metabolite tight junction metabolite microbiome tumor necrosis factor (TNF) Oleic Acids Biology Occludin Biochemistry digestive system Receptors G-Protein-Coupled chemistry.chemical_compound Mice Free fatty acid receptor 1 Animals Humans G protein-coupled receptor Receptor Molecular Biology Mice Inbred BALB C MEK inhibitor epithelial cell digestive oral and skin physiology Epithelial Cells Caco-2 Cell Biology Flow Cytometry Molecular biology Immunohistochemistry Intestines chemistry Tumor necrosis factor alpha Female Caco-2 Cells |
| Zdroj: | The Journal of biological chemistry 290 (2015): 2902–2918. doi:10.1074/jbc.M114.610733 info:cnr-pdr/source/autori:Miyamoto, Junki; Mizukure, Taichi; Park, Sibum; Kishino, Shigenobu; Kimura, Ikuo; Hirano, Kanako; Bergamo, Paolo; Rossi, Mauro; Suzuki, Takuya; Arita, Makoto; Ogawa, Jun; Tanabe, Soichi/titolo:A gut microbial metabolite of linoleic acid, 10-hydroxy-cis-12-octadecenoic acid, ameliorates intestinal epithelial barrier impairment partially via GPR40-MEK-ERK pathway/doi:10.1074%2Fjbc.M114.610733/rivista:The Journal of biological chemistry (Print)/anno:2015/pagina_da:2902/pagina_a:2918/intervallo_pagine:2902–2918/volume:290 |
| DOI: | 10.1074/jbc.M114.610733 |
| Popis: | Gut microbial metabolites of polyunsaturated fatty acids have attracted much attention because of their various physiological properties. Dysfunction of tight junction (TJ) in the intestine contributes to the pathogenesis of many disorders such as inflammatory bowel disease. We evaluated the effects of five novel gut microbial metabolites on tumor necrosis factor (TNF)-α-induced barrier impairment in Caco-2 cells and dextran sulfate sodium-induced colitis in mice. 10-Hydroxy-cis-12-octadecenoic acid (HYA), a gut microbial metabolite of linoleic acid, suppressed TNF-α and dextran sulfate sodium-induced changes in the expression of TJ-related molecules, occludin, zonula occludens-1, and myosin light chain kinase. HYA also suppressed the expression of TNF receptor 2 (TNFR2) mRNA and protein expression in Caco-2 cells and colonic tissue. In addition, HYA suppressed the protein expression of TNFR2 in murine intestinal epithelial cells. Furthermore, HYA significantly up-regulated G protein-coupled receptor (GPR) 40 expression in Caco-2 cells. It also induced [Ca2+]i responses in HEK293 cells expressing human GPR40 with higher sensitivity than linoleic acid, its metabolic precursor. The barrier-recovering effects of HYA were abrogated by a GPR40 antagonist and MEK inhibitor in Caco-2 cells. Conversely, 10-hydroxyoctadacanoic acid, which is a gut microbial metabolite of oleic acid and lacks a carbon-carbon double bond at Δ12 position, did not show these TJ-restoring activities and down-regulated GPR40 expression. Therefore, HYA modulates TNFR2 expression, at least partially, via the GPR40-MEK-ERK pathway and may be useful in the treatment of TJ-related disorders such as inflammatory bowel disease. 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. |
| Databáze: | OpenAIRE |
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