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Functional analysis of TRIF-mediated innate immune signaling in hypothalamic inflammation-induced dysregulation of food intake

Research Project

Project/Area Number 19K09019
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 54040:Metabolism and endocrinology-related
Research InstitutionToyama Prefectural Institute for Pharmaceutical Research

Principal Investigator

Watanabe Yasuharu  富山県薬事総合研究開発センター, その他部局等, 主任研究員 (80646307)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords視床下部炎症 / 自然免疫 / 肥満 / 自然免疫センサー / 炎症 / 過食
Outline of Research at the Start

高脂肪食によって誘導される脳の自律神経中枢である視床下部の炎症反応が、摂食抑制ホルモンであるレプチンのシグナルを障害し、過食になることが肥満のメカニズムの1つとして注目されている。我々は、自然免疫センサーのシグナル伝達分子TRIFが視床下部炎症に関与し、摂食調整異常を誘導して、過食性肥満の発症に深く関与することを見出した。
そこで本研究では、TRIFシグナルによる視床下部炎症の誘導機序を解明し、過食の新規分子メカニズムを明らかにする。

Outline of Final Research Achievements

Recent accumulating evidence suggests that toll like receptor 4 (TLR4) and the adaptor protein MyD88 induce hypothalamic inflammation, which inhibits leptin-induced anorexia and promotes hyperphagia, obesity, and metabolic syndrome.
We found that TLR4-MyD88- and TLR3-independent TLR adaptor protein TRIF signaling pathway was involved in high-fat diet (HFD)-induced hypothalamic inflammation and hyperphagia. TRIF-dependent STING singling, adaptor protein in the cytosolic DNA sensing pathway, induced hypothalamic inflammation and impaired leptin singling in hypothalamus. These results suggested that STING-TRIF singling contributes of hypothalamic inflammation and leptin resistance under HFD treatment.

Academic Significance and Societal Importance of the Research Achievements

これまで考えられているTLR4-MyD88B経路よりもSTING-TRIFシグナル経路が、視床下部炎症に深く関与することを見出した。今後STING-TRIFシグナルを誘導する上流分子や責任細胞の同定により、摂食調節異常の新規メカニズムを提唱でき、自制が困難な過食性肥満の解明に貢献できると考える。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (11 results)

All 2022 2021 2020 2019 Other

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Remarks (1 results)

  • [Journal Article] Betulin Attenuates TGF-β1- and PGE<sub>2</sub>-Mediated Inhibition of NK Cell Activity to Suppress Tumor Progression and Metastasis in Mice2022

    • Author(s)
      Ogasawara Masaru、Yamasaki-Yashiki Shino、Hamada Masahiro、Yamaguchi-Miyamoto Tomomi、Kawasuji Toru、Honda Hiroe、Yanagibashi Tsutomu、Ikutani Masashi、Watanabe Yasuharu、Fujimoto Ryota、Matsunaga Takayuki、Nakajima Noriyuki、Nagai Yoshinori、Takatsu Kiyoshi
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 45 Issue: 3 Pages: 339-353

    • DOI

      10.1248/bpb.b21-00921

    • NAID

      130008165815

    • ISSN
      0918-6158, 1347-5215
    • Year and Date
      2022-03-01
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Isoliquiritigenin Attenuates Adipose Tissue Inflammation and Metabolic Syndrome by Modifying Gut Bacteria Composition in Mice2022

    • Author(s)
      Ishibashi Riko、Furusawa Yukihiro、Honda Hiroe、Watanabe Yasuharu、Fujisaka Shiho、Nishikawa Miyu、Ikushiro Shinichi、Kurihara Shin、Tabuchi Yoshiaki、Tobe Kazuyuki、Takatsu Kiyoshi、Nagai Yoshinori
    • Journal Title

      Molecular Nutrition &amp; Food Research

      Volume: - Issue: 10 Pages: 2101119-2101119

    • DOI

      10.1002/mnfr.202101119

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bone marrow transplantation into Abcd1‐deficient mice: Distribution of donor derived‐cells and biological characterization of the brain of the recipient mice2021

    • Author(s)
      Morita Masashi、Kaizawa Taro、Yoda Taiki、Oyama Takuro、Asakura Reina、Matsumoto Shun、Nagai Yoshinori、Watanabe Yasuharu、Watanabe Shiro、Kobayashi Hiroshi、Kawaguchi Kosuke、Yamamoto Seiji、Shimozawa Nobuyuki、So Takanori、Imanaka Tsuneo
    • Journal Title

      Journal of Inherited Metabolic Disease

      Volume: 44 Issue: 3 Pages: 718-727

    • DOI

      10.1002/jimd.12346

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Bidirectional Crosstalk Between Neutrophils and Adipocytes Promotes Adipose Tissue Inflammation2019

    • Author(s)
      Watanabe Y, Nagai Y, Honda H, Okamoto N, Yanagibashi T, Ogasawara M, Yamamoto S, Imamura R, Takasaki I, Hara H, Sasahara M, Arita M, Hida S, Taniguchi S, Suda T, Takatsu K.
    • Journal Title

      FASEB J.

      Volume: 33(11) Issue: 11 Pages: 11821-11835

    • DOI

      10.1096/fj.201900477rr

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] イソリクイリチゲニンによる腸内細菌叢の変動を介したメタボリックシンドロームの改善2022

    • Author(s)
      石橋璃子, 古澤之裕, 本田裕恵, 渡邉康春, 藤坂志帆, 戸邉一之, 高津聖志, 栗原新, 田渕圭章, 長井良憲
    • Organizer
      日本薬学会第142年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Crosstalk between neutrophils and adipocytes exacerbates adipose tissue inflammation in progression of type 2 diabetes2021

    • Author(s)
      渡邉康春
    • Organizer
      第6回富山バーゼルジョインシンポジウム
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Bidirectional crosstalk between neutrophils and adipocytes promotes adipose tissue inflammation2020

    • Author(s)
      Watanabe Y., Nagai Y.,and Takatsu K
    • Organizer
      The 104th Annual Meeting of The American Association of Immunologists
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] TLRのアダプター分子TRIFを介した摂食調節異常・視床下部炎症の解析2019

    • Author(s)
      渡邉康春、長井良憲、 髙津聖志
    • Organizer
      第40回日本炎症・再生医学会
    • Related Report
      2019 Research-status Report
  • [Presentation] 内臓脂肪組織炎症における好中球と脂肪細胞のクロストーク2019

    • Author(s)
      長井良憲、渡邉康春、髙津聖志
    • Organizer
      第40回日本炎症・再生医学会
    • Related Report
      2019 Research-status Report
  • [Presentation] 好中球と脂肪細胞の相互作用は内臓脂肪組織の炎症を誘導する2019

    • Author(s)
      渡邉康春、長井良憲、髙津聖志
    • Organizer
      第92回日本生化学会大会
    • Related Report
      2019 Research-status Report
  • [Remarks] 富山県薬事総合研究開発センター

    • URL

      https://www.pref.toyama.jp/1285/kurashi/kenkou/iryou/1285/index.html

    • Related Report
      2021 Annual Research Report 2020 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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