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Roles of tryptophan-sensing receptor GPR142 in immune regulation

Research Project

Project/Area Number 20K11514
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 59040:Nutrition science and health science-related
Research InstitutionWakayama Medical University

Principal Investigator

Iwakura Hiroshi  和歌山県立医科大学, 薬学部, 教授 (20378615)

Co-Investigator(Kenkyū-buntansha) 上田 陽子  和歌山県立医科大学, 医学部, 助教 (80794809)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsGPR142 / トリプトファン / 炎症
Outline of Research at the Start

GPR142は、7回膜貫通型G蛋白共役型受容体の一つであり、最近、芳香族アミノ酸、中でもトリプトファンがその最も強いリガンドであることが報告された。GPR142は、膵、消化管等で高発現しており、膵、消化管ホルモン分泌調節に関わることが明らかとなってきた。一方、トリプトファンは、キヌレニン経路で代謝され、キヌレニン経路の代謝物は、免疫調節に重要な働きをしていることが知られている。今回、トリプトファン感知受容体であるGPR142が、キヌレニン経路の調節、また、免疫調節に関わる可能性について明らかにすることを目的に、モデル動物や、細胞株を用いた種々の検討を行う。

Outline of Final Research Achievements

We found that GPR142 expression levels in the stomach of morbidly obese patients were correlated with those of proinflammatory cytokines. Moreover, GPR142 expression level was increased with addition of proinflammatory cytokines to the medium in ghrelin-producing cell line, MGN3-1 cells. However, the degree of inflammation in the three different mice models, namely colitis with DDS, gastritis with ethanol, and LPS-induced inflammation models, were not affected by deletion of GPR142 gene.

Academic Significance and Societal Importance of the Research Achievements

これまでの検討により、トリプトファン感知受容体GPR142の発現レベルが、炎症性サイトカインによって調節を受けることが明らかとなった。トリプトファンはそのキヌレニン系路による代謝物が免疫調節作用を持つことが知られており、トリプトファン濃度の感知が炎症調節に関わる可能性が考えられる。今回の炎症モデルでは、GPR142シグナルが炎症に与える影響は確認されなかったが、炎症によってGPR142発現が調節を受ける意義の解明が期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (17 results)

All 2022 2021 2020

All Journal Article (9 results) (of which Peer Reviewed: 6 results,  Open Access: 5 results) Presentation (8 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Rice Endoplasmic Protein-Derived Peptides, Rice-Ghretropins A and B, Stimulate Ghrelin Release in MGN3-1 Cells and Increase Plasma Acylated Ghrelin and Food Intake in Mice2022

    • Author(s)
      Kaneko Kentaro、Tokuyama Yuki、Taniguchi Eriko、Abe Shimon、Nakato Junya、Iwakura Hiroshi、Sato Masaru、Kurabayashi Atsushi、Suzuki Hideyuki、Ito Akira、Higuchi Yuki、Nakayama Ryoko、Uchiyama Kimiko、Takahashi Hajime、Ohinata Kousaku
    • Journal Title

      Journal of Agricultural and Food Chemistry

      Volume: 71 Issue: 1 Pages: 421-429

    • DOI

      10.1021/acs.jafc.2c05965

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Potential Role of TRPV4 in Stretch-Induced Ghrelin Secretion and Obesity2022

    • Author(s)
      Hayakawa S, Tanaka T, Ogawa R, Ito S, Ueno S, Koyama H, Tomotaka O, Sagawa H, Tanaka T, Iwakura H, Takahashi H, Matsuo Y, Mitsui A, Kimura M, Takahashi S, Takiguchi S.
    • Journal Title

      International Journal of Endocrinology

      Volume: 2022 Pages: 7241275-7241275

    • DOI

      10.1155/2022/7241275

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Laparoscopic sleeve gastrectomy for morbid obesity improves gut microbiota balance, increases colonic mucosal-associated invariant T cells and decreases circulating regulatory T cells2022

    • Author(s)
      Fukuda Naoki、Ojima Toshiyasu、Hayata Keiji、Katsuda Masahiro、Kitadani Junya、Takeuchi Akihiro、Goda Taro、Ueda Yoko、Iwakura Hiroshi、Nishi Masahiro、Yamaue Hiroki
    • Journal Title

      Surgical Endoscopy

      Volume: 36 Issue: 10 Pages: 7312-7324

    • DOI

      10.1007/s00464-022-09122-z

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hypopituitarism and cranial nerve involvement mimicking Tolosa-Hunt syndrome as the initially presenting feature of diffuse large B-cell lymphoma: a case report2022

    • Author(s)
      Kishimoto Shohei、Morita Shuhei、Kurimoto Chiaki、Kitahara Chie、Tsuji Tomoya、Uraki Shinsuke、Takeshima Ken、Furukawa Yasushi、Iwakura Hiroshi、Furuta Hiroto、Nishi Masahiro、Matsuoka Taka-aki
    • Journal Title

      BMC Endocrine Disorders

      Volume: 22 Issue: 1 Pages: 65-65

    • DOI

      10.1186/s12902-022-00973-0

    • Related Report
      2021 Research-status Report
  • [Journal Article] Development and preliminary validation of a machine learning system for thyroid dysfunction diagnosis based on routine laboratory tests2022

    • Author(s)
      Hu Min、Asami Chikashi、Iwakura Hiroshi、Nakajima Yasuyo、Sema Ryousuke、Kikuchi Tsuyoshi、Miyata Tsuyoshi、Sakamaki Koji、Kudo Takumi、Yamada Masanobu、Akamizu Takashi、Sakakibara Yasubumi
    • Journal Title

      Communications Medicine

      Volume: 2 Issue: 1 Pages: 1-1

    • DOI

      10.1038/s43856-022-00071-1

    • Related Report
      2021 Research-status Report
  • [Journal Article] Wheat-ghretropins: novel ghrelin-releasing peptides derived from wheat protein.2021

    • Author(s)
      Tanikawa K, Kaneko K, Abe S, Nakato J, Tokuyama Y, Odaka S, Iwakura H, Sato M, Kurabayashi A, Suzuki H, Makita M, Ikemoto H, Matsumura S, Inoue K, Ohinata K
    • Journal Title

      FEBS Open Bio

      Volume: 11(4) Issue: 4 Pages: 1144-1152

    • DOI

      10.1002/2211-5463.13124

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Distinct clinical features and prognosis between persistent and temporary thyroid dysfunctions by immune-checkpoint inhibitors2021

    • Author(s)
      Inaba Hidefumi、Ariyasu Hiroyuki、Iwakura Hiroshi、Kurimoto Chiaki、Takeshima Ken、Morita Shuhei、Furuta Hiroto、Hotomi Muneki、Akamizu Takashi
    • Journal Title

      Endocrine Journal

      Volume: 68 Issue: 2 Pages: 231-241

    • DOI

      10.1507/endocrj.EJ20-0371

    • NAID

      130007992474

    • ISSN
      0918-8959, 1348-4540
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The influence of thyroid autoimmunity on pregnancy outcome in infertile women: a prospective study2020

    • Author(s)
      Inagaki Yuko、Takeshima Ken、Nishi Masahiro、Ariyasu Hiroyuki、Doi Asako、Kurimoto Chiaki、Uraki Shinsuke、Morita Shuhei、Furukawa Yasushi、Inaba Hidefumi、Iwakura Hiroshi、Shimokawa Toshio、Utsunomiya Tomoko、Akamizu Takashi
    • Journal Title

      Endocrine Journal

      Volume: 67 Issue: 8 Pages: 859-868

    • DOI

      10.1507/endocrj.ej19-0604

    • NAID

      130007891735

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Predictive and sensitive biomarkers for thyroid dysfunctions during treatment with immune‐checkpoint inhibitors2020

    • Author(s)
      Kurimoto Chiaki、Inaba Hidefumi、Ariyasu Hiroyuki、Iwakura Hiroshi、Ueda Yoko、Uraki Shinsuke、Takeshima Ken、Furukawa Yasushi、Morita Shuhei、Yamamoto Yuki、Yamashita Shimpei、Katsuda Masahiro、Hayata Atsushi、Akamatsu Hiroaki、Jinnin Masatoshi、Hara Isao、Yamaue Hiroki、Akamizu Takashi
    • Journal Title

      Cancer Science

      Volume: - Issue: 5 Pages: 1468-1477

    • DOI

      10.1111/cas.14363

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] スリーブ状胃切除術を施行した患者の胃サンプルにおけるトリプトファン受容体GPR142 発現と糖尿病パラメーターとの比較検討2022

    • Author(s)
      上田陽子、岩倉浩、土井麻子、松谷紀彦、森田修平、福田直城、早田啓治、尾島敏康、西理宏、古田浩人、山上裕機、赤水尚史、松岡孝昭
    • Organizer
      第65回日本糖尿病学会年次学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 腹腔鏡下スリーブ状胃切除術を施行した患者における胃のGPR142発現と臨床パラメータとの比較検討2022

    • Author(s)
      上田陽子、岩倉浩、土井麻子、松谷紀彦、森田修平、福田直城、早田啓治、尾島敏康、西理宏、古田浩人、山上裕機、赤水尚史、松岡孝昭
    • Organizer
      第95回日本内分泌学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] グレリン細胞において炎症性サイトカインがGPR142発現に与える影響の検討2022

    • Author(s)
      上田 陽子, 岩倉 浩, 西 理宏, 松岡 孝昭
    • Organizer
      第43回 日本肥満学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] グレリン細胞において炎症性サイトカインがGPR142発現に与える影響の検討2022

    • Author(s)
      上田 陽子, 岩倉 浩、西 理宏, 松岡孝昭
    • Organizer
      第42会日本肥満学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 上田 陽子, 岩倉 浩, 坂東 美佳, 保田 知勢, 土井 麻子, 森田 修平, 有安 宏之, 西 理宏, 古田 浩人, 赤水 尚史, 松岡 孝昭2021

    • Author(s)
      炎症性サイトカインによるトリプトファン受容体GPR142発現調節の検討
    • Organizer
      第94回日本内分泌学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] GPR142 Expression Levels Were Correlated with Plasma Ghrelin Levels and Heights in Morbidly Obese Patients2020

    • Author(s)
      Yoko Ueda, Hiroshi Iwakura, Asako Doi, Norihiko Matsutani, Shuhei Morita, Hidefumi Inaba, Hiroyuki Ariyasu, Naoki Fukuda, Keiji Hayata, Toshiyasu Ojima, Masahiro Nishi, Hiroki Yamaue, Takashi Akamizu
    • Organizer
      The Endocrine Society annual meeting 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 肥満減量手術を施行した患者の胃サンプルにおけるトリプトファン受容体GPR142発現と糖尿病パラメーターとの比較検討2020

    • Author(s)
      上田 陽子, 岩倉 浩, 土井 麻子, 松谷 紀彦, 森田 修平, 稲葉 秀文, 有安 宏之, 福田 直樹, 早田 啓治, 尾島 敏康, 西 理宏, 古田 浩人, 山上 裕機, 赤水 尚史
    • Organizer
      第63回糖尿病学会年次学術総会
    • Related Report
      2020 Research-status Report
  • [Presentation] 肥満患者、糖尿病患者の胃における芳香族アミノ酸受容体GPR142発現の検討2020

    • Author(s)
      上田 陽子, 岩倉 浩, 土井 麻子, 松谷 紀彦, 森田 修平, 稲葉 秀文, 有安 宏之, 福田 直城, 早田 啓治, 尾島 敏康, 西 理宏, 古田 浩人, 山上 裕機, 赤水 尚史
    • Organizer
      第93回日本内分泌学会学術総会WEB開催
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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