Medium-chain fatty acids suppress lipotoxicity-induced hepatic fibrosis via the immunomodulating receptor GPR84
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- Ohue-Kitano, Ryuji
- Laboratory of Molecular Neurobiology, Graduate School of Biostudies, Kyoto University; Laboratory of Molecular Neurobiology, Graduate School of Pharmaceutical Sciences, Kyoto University
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- Nonaka, Hazuki
- Department of Applied Biological Science, Graduate School of Agriculture, Tokyo University of Agriculture and Technology
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- Nishida, Akari
- Laboratory of Molecular Neurobiology, Graduate School of Pharmaceutical Sciences, Kyoto University
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- Masujima, Yuki
- Laboratory of Molecular Neurobiology, Graduate School of Biostudies, Kyoto University
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- Takahashi, Daisuke
- Division of Biochemistry, Faculty of Pharmacy and Graduate School of Pharmaceutical Science, Keio University
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- Ikeda, Takako
- Laboratory of Molecular Neurobiology, Graduate School of Biostudies, Kyoto University; Laboratory of Molecular Neurobiology, Graduate School of Pharmaceutical Sciences, Kyoto University
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- Uwamizu, Akiharu
- Graduate School of Pharmaceutical Sciences, The University of Tokyo
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- Tanaka, Miyako
- Department of Molecular Medicine and Metabolism, Research Institute of Environmental Medicine, Nagoya University
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- Kohjima, Motoyuki
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University
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- Igarashi, Miki
- Department of Applied Biological Science, Graduate School of Agriculture, Tokyo University of Agriculture and Technology
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- Katoh, Hironori
- Laboratory of Molecular Neurobiology, Graduate School of Biostudies, Kyoto University; Laboratory of Molecular Neurobiology, Graduate School of Pharmaceutical Sciences, Kyoto University
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- Tanaka, Tomohiro
- Department of Gastroenterology and Metabolism, Graduate School of Medical Sciences and Medical School, Nagoya City University
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- Inoue, Asuka
- Graduate School of Pharmaceutical Sciences, Tohoku University
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- Suganami, Takayoshi
- Department of Molecular Medicine and Metabolism, Research Institute of Environmental Medicine, Nagoya University
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- Hase, Koji
- Division of Biochemistry, Faculty of Pharmacy and Graduate School of Pharmaceutical Science, Keio University; International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo (IMSUT)
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- Ogawa, Yoshihiro
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University
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- Aoki, Junken
- Graduate School of Pharmaceutical Sciences, The University of Tokyo
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- Kimura, Ikuo
- Laboratory of Molecular Neurobiology, Graduate School of Biostudies, Kyoto University; Laboratory of Molecular Neurobiology, Graduate School of Pharmaceutical Sciences, Kyoto University; Department of Applied Biological Science, Graduate School of Agriculture, Tokyo University of Agriculture and Technology
Description
Medium-chain triglycerides (MCTs), which consist of medium-chain fatty acids (MCFAs), are unique forms of dietary fat with various health benefits. G protein–coupled 84 (GPR84) acts as a receptor for MCFAs (especially C10:0 and C12:0); however, GPR84 is still considered an orphan receptor, and the nutritional signaling of endogenous and dietary MCFAs via GPR84 remains unclear. Here, we showed that endogenous MCFA-mediated GPR84 signaling protected hepatic functions from diet-induced lipotoxicity. Under high-fat diet (HFD) conditions, GPR84-deficient mice exhibited nonalcoholic steatohepatitis (NASH) and the progression of hepatic fibrosis but not steatosis. With markedly increased hepatic MCFA levels under HFD, GPR84 suppressed lipotoxicity-induced macrophage overactivation. Thus, GPR84 is an immunomodulating receptor that suppresses excessive dietary fat intake–induced toxicity by sensing increases in MCFAs. Additionally, administering MCTs, MCFAs (C10:0 or C12:0, but not C8:0), or GPR84 agonists effectively improved NASH in mouse models. Therefore, exogenous GPR84 stimulation is a potential strategy for treating NASH.
Journal
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- JCI Insight
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JCI Insight 8 (2), 2023-01-24
American Society for Clinical Investigation
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Keywords
Details 詳細情報について
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- CRID
- 1050857899425939584
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- ISSN
- 23793708
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- HANDLE
- 2433/278839
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- PubMed
- 36480287
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- Text Lang
- en
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- Article Type
- journal article
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- Data Source
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- IRDB
- Crossref
- KAKEN
- OpenAIRE