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Elucidation of the mechanism by which foul odors enhance the perception of smells

Research Project

Project/Area Number 21H02140
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 38050:Food sciences-related
Research InstitutionKyushu University

Principal Investigator

Inagaki Shigenori  九州大学, 医学研究院, 助教 (30827952)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
Fiscal Year 2023: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000)
Keywords嗅神経細胞 / 嗅覚受容体 / アロステリック効果 / アロステリック / 相乗効果 / 順応 / 嗅上皮 / アロステリック相互作用 / 匂い / エンハンサー / イメージング / 嗅覚 / 悪臭
Outline of Research at the Start

しばしば“悪臭”と形容される匂いを足すと、それまでの香りよりも遥かに良い香りに変わることや、異なる香りに変わることがある。しかしながら、その具体的なメカニズムは明らかになっていない。そこで本研究では、低濃度の悪臭物質が、特定の嗅覚受容体の活動を相乗的に増強することで、動物の嗅覚を調整している可能性について検証する。本研究によって、悪臭が香りの引き立て役となるメカニズムが明らかになり、食品業界や香料業界における新規香料の開発につながると期待される。

Outline of Final Research Achievements

The allosteric effect is the phenomenon whereby the binding of a molecule to a site other than the ligand binding site causes a change in receptor activity. In this study, we examined odor responses of olfactory sensory neurons and found that odorant receptors exhibit allosteric effects. In addition, we demonstrated that the allosteric effect actually occurs at the level of the odorant receptor with in vitro reconstitution assays.

Academic Significance and Societal Importance of the Research Achievements

異なる匂いを足し合わせると、元の匂いからは想像できない匂いになることがある。しかし、そのメカニズムについてはよく分かっていなかった。本研究成果により、匂いの足し合わせの法則性の一端が、嗅神経細胞・嗅覚受容体レベルで明らかになった。従って、匂いの足し合わせに関する情報処理の理解が今後一層進むと考えられる。また将来的には、調香師の知識や経験に基づかない匂いの設計にも繋がることが期待される。

Report

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

    (12 results)

All 2024 2023 2022 2021

All Journal Article (2 results) (of which Open Access: 2 results,  Peer Reviewed: 1 results) Presentation (10 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Automated neuronal reconstruction with super-multicolour fluorescence imaging2022

    • Author(s)
      Leiwe Marcus N.、Fujimoto Satoshi、Baba Toshikazu、Moriyasu Daichi、Saha Biswanath、Sakaguchi Richi、Inagaki Shigenori、Imai Takeshi
    • Journal Title

      bioRxiv

      Volume: - Pages: 512984-512984

    • DOI

      10.1101/2022.10.20.512984

    • Related Report
      2022 Annual Research Report
    • Open Access
  • [Journal Article] In vivo Optical Access to Olfactory Sensory Neurons in the Mouse Olfactory Epithelium2021

    • Author(s)
      Shigenori Inagaki, Ryo Iwata, Takeshi Imai
    • Journal Title

      BIO-PROTOCOL

      Volume: 11 Issue: 12

    • DOI

      10.21769/bioprotoc.4055

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 嗅覚受容体のアロステリック制御による多様な匂い応答2024

    • Author(s)
      深田幸平
    • Organizer
      第 6 回これからの神経回路研究の会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Combinatorial allosteric interactions at odorant receptors for odor mixture coding2023

    • Author(s)
      Kohei FUKATA, Shigenori INAGAKI, Biswanath SAHA, Takeshi IMAI
    • Organizer
      NEUROSCIENCE2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Combinatorial orthosteric and allosteric interactions of an odorant receptor2023

    • Author(s)
      Shigenori Inagaki, Kohei Fukata, Biswanath Saha, Takeshi Imai
    • Organizer
      ISMNTOP2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 非シナプス性相互作用を介した嗅覚順応の多細胞同調機構2022

    • Author(s)
      稲垣成矩、今井猛
    • Organizer
      精神・神経疾患領域/マルチセンシング連携推進ワークショップ
    • Related Report
      2022 Annual Research Report
  • [Presentation] Non-synaptic mechanisms mediate global desensitization of olfactory sensory neurons in vivo2022

    • Author(s)
      Shigenori Inagaki, Takeshi Imai
    • Organizer
      NEURO2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Allosteric modulations in odor mixture responses2022

    • Author(s)
      Kohei Fukata, Shigenori Inagaki, and Takeshi Imai
    • Organizer
      NEURO2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] 非シナプス性相互作用を介した嗅覚順応の多細胞同調機構2022

    • Author(s)
      稲垣成矩、今井猛
    • Organizer
      【臨界期生物学】領域班会議
    • Related Report
      2022 Annual Research Report
  • [Presentation] Non-synaptic mechanisms mediate global desensitization of olfactory sensory neurons in vivo2022

    • Author(s)
      Shigenori Inagaki, Takeshi Imai
    • Organizer
      Neuro2022
    • Related Report
      2021 Annual Research Report
  • [Presentation] Chronic calcium imaging of olfactory sensory neurons in mice2021

    • Author(s)
      Shigenori Inagaki, Takeshi Imai
    • Organizer
      44th Annual Meeting of the Japan Neuroscience Society
    • Related Report
      2021 Annual Research Report
  • [Presentation] Global adaptation in the mouse olfactory sensory neurons in vivo2021

    • Author(s)
      Shigenori Inagaki, Takeshi Imai
    • Organizer
      Symposium “Circuit Construction in the Mammalian Brain”
    • Related Report
      2021 Annual Research Report

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

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