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Dynamic Interaction Mechanisms of Taste Receptors

Research Project

Project/Area Number 21K09818
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57010:Oral biological science-related
Research InstitutionKyushu University

Principal Investigator

Sanematsu Keisuke  九州大学, 歯学研究院, 講師 (70567502)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords味覚受容体 / 甘味 / 動的活性化機構 / 味覚 / 甘味受容体 / 受容体活性化機構
Outline of Research at the Start

これまで味覚受容体とリガンドの静的な結合形態に着目されてきたが、結合後の動的相互作用に関してその多くは謎であった。そこで本研究では、1) 生体環境を模倣したin silico網羅的変異分子シミュレーションを用いることで、味覚受容体の分子間、分子内動的相互作用の解明を目指す。次に2) in vitro味覚受容体機能解析系に落とし込むことで、受容体動的活性化メカニズムの理解を深める。3)さらにがんなど病態における味覚受容体変異を分子モデル、受容体機能解析系双方で再現し、受容体生理・病態機能の理解を深める。

Outline of Final Research Achievements

The molecular mechanisms of dynamic receptor activation and inactivation that occur after the binding of taste molecules to their receptors have remained unknown because the analysis of the interaction between taste substances and taste receptors has focused on the static binding form. In this study, by introducing molecular dynamics simulations, we succeeded in reproducing the species-specific sensitivity of the sweet inhibitors gymnemic acid and lactisole and the artificial sweetener cyclamate in the transmembrane domain of the sweet taste receptor subunit TAS1R3. In particular, cyclamate was found to act as an artificial sweetener in the human receptor and as an inhibitor in the mouse receptor.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は、味覚受容体の種特異的な感受性をシミュレーション上で再現可能であることを示した。これらは、甘味受容体の活性化・不活性化メカニズムの理解を深めるだけでなく、全身に発現する甘味受容体の制御機構の理解に重要であり、新規味覚修飾物質や機能性食品の開発や創薬に繋がる。また他のクラスC Gタンパク質共役型受容体の活性化機構に重要な知見を与える。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (20 results)

All 2024 2023 2022 2021 Other

All Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 8 results,  Open Access: 7 results) Presentation (9 results) (of which Int'l Joint Research: 2 results,  Invited: 5 results) Book (2 results) Remarks (1 results)

  • [Journal Article] Relationship between olfactory and gustatory functions: The Iwaki health promotion project 20192024

    • Author(s)
      Yamauchi K、Matsushita D、Shimizume N、Kudo R、Kohama Y、Miyazaki A、Taguchi H、Hirao T、Kawabata F、Kawabata Y、Sanematsu K、Takai S、Yamazoe J、Anabuki K、Aoshima K、Takahashi Y、Goto S、Sasaki A、Shigemura N、Matsubara A
    • Journal Title

      Auris Nasus Larynx

      Volume: 51 Issue: 3 Pages: 443-449

    • DOI

      10.1016/j.anl.2023.12.009

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The G protein‐coupled receptor <scp>GPRC5C</scp> is a saccharide sensor with a novel ‘off’ response2023

    • Author(s)
      Kawabata Yuko、Takai Shingo、Sanematsu Keisuke、Iwata Shusuke、Kawabata Fuminori、Kanematsu Takashi、Jimi Eijiro、Shigemura Noriatsu
    • Journal Title

      FEBS Letters

      Volume: 597 Issue: 15 Pages: 2006-2016

    • DOI

      10.1002/1873-3468.14695

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Adrenomedullin Enhances Mouse Gustatory Nerve Responses to Sugars via T1R-Independent Sweet Taste Pathway2023

    • Author(s)
      Shusuke Iwata, Ryusuke Yoshida, Shingo Takai, Keisuke Sanematsu, Noriatsu Shigemura, Yuzo Ninomiya
    • Journal Title

      Nutrients

      Volume: 15 Issue: 13 Pages: 2941-2941

    • DOI

      10.3390/nu15132941

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Antiarrhythmic Drug Flecainide Enhances Aversion to HCl in Mice.2023

    • Author(s)
      Kawabata Y, Takai S, Sanematsu K, Yoshida R, Kawabata F, Shigemura N.
    • Journal Title

      eNeuro.

      Volume: 10(9) Issue: 9 Pages: 0048-23

    • DOI

      10.1523/eneuro.0048-23.2023

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bisphosphonate affects the behavioral responses to HCl by disrupting farnesyl diphosphate synthase in mouse taste bud and tongue epithelial cells2022

    • Author(s)
      Oike Asami、Iwata Shusuke、Hirayama Ayaka、Ono Yurika、Nagasato Yuki、Kawabata Yuko、Takai Shingo、Sanematsu Keisuke、Wada Naohisa、Shigemura Noriatsu
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 21246-21246

    • DOI

      10.1038/s41598-022-25755-5

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] In vitro and in silico characterization of adiponectin-receptor agonist dipeptides2021

    • Author(s)
      Lee Yuna、Nakano Akihiro、Nakamura Saya、Sakai Kenta、Tanaka Mitsuru、Sanematsu Keisuke、Shigemura Noriatsu、Matsui Toshiro
    • Journal Title

      npj Science of Food

      Volume: 5 Issue: 1 Pages: 29-29

    • DOI

      10.1038/s41538-021-00114-2

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Ile191Val is a partial loss-of-function variant of the TAS1R2 sweet-taste receptor and is associated with reduced glucose excursions in humans2021

    • Author(s)
      Serrano Joan、Seflova Jaroslava、Park Jihye、Pribadi Marsha、Sanematsu Keisuke、Shigemura Noriatsu、Serna Vanida、Yi Fanchao、Mari Andrea、Procko Erik、Pratley Richard E.、Robia Seth L.、Kyriazis George A.
    • Journal Title

      Molecular Metabolism

      Volume: 54 Pages: 101339-101339

    • DOI

      10.1016/j.molmet.2021.101339

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Gene expression profiling of α-gustducin-expressing taste cells in mouse fungiform and circumvallate papillae2021

    • Author(s)
      YuYamada, ShingoTakai, Yu Watanabe, Ayana Osaki, Yuko Kawabata, Asami Oike, Ayaka Hirayama, Shusuke Iwata, Keisuke Sanematsu, ShojiTabata, Noriatsu Shigemura
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 557 Pages: 206-212

    • DOI

      10.1016/j.bbrc.2021.04.022

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Molecular mechanisms of sweet taste receptor activation/inactivation and species-specific sensitivity2024

    • Author(s)
      Keisuke Sanematsu,Masato Yamamoto, Yuki Nagasato, Yuko Kawabata, Shingo Takai, Noriatsu Shigemura
    • Organizer
      日本生理学会 第101回大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 味覚受容機構のデジタル化における現状2024

    • Author(s)
      實松 敬介
    • Organizer
      第19回日本感性工学会春季大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] サッカリンの種特異的感受性の分子メカニズム2023

    • Author(s)
      實松 敬介、永里 侑貴、山本 真隆人、平山 彩夏、今村 恵美子、川端 由子、髙井 信吾、重村 憲徳
    • Organizer
      日本味と匂学会第57回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 甘味受容体サブユニットTAS1R3の活性化・不活性化メカニズムの解明2023

    • Author(s)
      實松 敬介,川端 由子, 渡邉 雄, 岩田 周介, 髙井 信吾, 重村 憲徳
    • Organizer
      第65回歯科基礎医学会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Elucidation for the activation/inactivation dynamics of the sweet taste receptor2023

    • Author(s)
      Keisuke Sanematsu, Masato Yamamoto, Yuki Nagasato, Yuko Kawabata, Shingo Takai, Noriatsu Shigemura
    • Organizer
      ISMNTOP2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 甘味受容体サブユニットTAS1R3 の膜貫通ドメインにおける動的機能の解明2023

    • Author(s)
      實松 敬介、山本 真隆人、川端 由子、渡邉 雄、岩田 周介、髙井 信吾、重村 憲徳
    • Organizer
      日本生理学会第100回記念大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Visualization of taste2022

    • Author(s)
      Sanematsu Keisuke
    • Organizer
      22nd IUNS-ICN International Congress of Nutrition
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 甘味受容体の動的活性化・不活性化メカニズム2021

    • Author(s)
      實松 敬介、山本 真隆人、川端 由子、岩田 周介、髙井 信吾、重村 憲徳
    • Organizer
      日本味と匂学会第55回大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 味覚受容体の動的活性化・不活性化メカニズムの理解2021

    • Author(s)
      實松 敬介
    • Organizer
      感覚研究コンソーシアム:第一回 味覚ワーキンググループ
    • Related Report
      2021 Research-status Report
    • Invited
  • [Book] 月刊化学Vol.78 No.8 甘味受容体の動的な活性化・不活性化 メカニズムの解明ーー血糖値をコントロールできる甘味修飾物質の開発を目指して2023

    • Author(s)
      實松敬介、重村憲徳
    • Total Pages
      4
    • Publisher
      化学同人
    • Related Report
      2023 Annual Research Report
  • [Book] 糖質・甘味のおいしさ評価と健康・調理・加工 (山野善正 監修) 第4編3章 ギムネマ酸の相互作用による甘味受容体抑制機構2022

    • Author(s)
      實松 敬介
    • Total Pages
      9
    • Publisher
      エヌ・ティー・エス
    • ISBN
      9784860437633
    • Related Report
      2021 Research-status Report
  • [Remarks] 九州大学 研究者情報

    • URL

      https://hyoka.ofc.kyushu-u.ac.jp/search/details/K003516/index.html

    • Related Report
      2022 Research-status Report 2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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