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Role of ectopic olfactory receptor system in pancreatic beta cells

Research Project

Project/Area Number 19K17997
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 54040:Metabolism and endocrinology-related
Research InstitutionTohoku University

Principal Investigator

Munakata Yuichiro  東北大学, 大学病院, 助教 (60747070)

Project Period (FY) 2019-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsインスリン分泌 / 糖尿病 / 嗅覚受容体 / 膵β細胞
Outline of Research at the Start

研究代表者は、複数の嗅覚受容体がマウス膵β細胞に発現すること、そのうちの一つであるOLFR15がグルコース応答性インスリン分泌(GSIS)の促進に重要な役割を果たしていること、を明らかにしてきた。その知見に基づき、嗅覚受容体という化学受容器を用いて、膵β細胞が食事由来の種々の物質を認識し糖代謝を調節する仕組みや糖尿病病態における変容、インクレチンシグナルとの相互作用を明らかとし、化合物制御によるGSIS促進治療に向けた検討を行う。

Outline of Final Research Achievements

In this project, we searched for candidate ligands of olfactory receptor (OR) expressed in pancreatic beta cells and examined whether OR-mediated glucose-stimulated insulin secretion (GSIS) enhancement was potentiated by incretin signaling.
Our present study raised the possibility that amyl hexanoate (AH) and allyl phenylacetate (AP) were new ligands of OLFR15 expressed in pancreatic beta cells. Furthermore, we elucidated that GSIS from pancreatic beta cells was significantly enhanced by the combination of AH and GLP1 compared with AH or GLP1.
These results suggest that the OR system in pancreatic beta cells may constitute a potential therapeutic target for type 2 diabetes by enhancing insulin secretion.

Academic Significance and Societal Importance of the Research Achievements

嗅覚受容体を介したインスリン分泌促進機構は、既存の糖尿病薬と別経路を用い、活性化により高血糖時のみインスリン分泌を増強する。そのため、本研究で得られた結果と併せて、低血糖を起こさずGSISを増強することで糖尿病を治療する新規薬剤の開発につながる可能性が示唆された。インスリン分泌不全が2型糖尿病の成因として重要であることが知られている我が国においては特に有益な治療選択肢を増やすことにつながり得る成果と考えられた。

Report

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

    (5 results)

All 2020 2019

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (1 results) Book (1 results)

  • [Journal Article] Continuous glucose monitoring in patients with remission of type 2 diabetes after laparoscopic sleeve gastrectomy without or with duodenojejunal bypass2020

    • Author(s)
      Sawada Shojiro、Kodama Shinjiro、Tsuchiya Satoko、Kurosawa Satoko、Endo Akira、Sugawara Hiroto、Hosaka Shinichiro、Kawana Yohei、Asai Yoichiro、Yamamoto Junpei、Munakata Yuichiro、Izumi Tomohito、Takahashi Kei、Kaneko Keizo、Imai Junta、Imoto Hirofumi、Tanaka Naoki、Naitoh Takeshi、Ishigaki Yasushi、Katagiri Hideki
    • Journal Title

      Clinical Obesity

      Volume: 10 Issue: 6 Pages: 1-7

    • DOI

      10.1111/cob.12409

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inhibition of Plasminogen Activator Inhibitor-1 Activation Suppresses High Fat Diet-Induced Weight Gain via Alleviation of Hypothalamic Leptin Resistance2020

    • Author(s)
      Shinichiro Hosaka, Tetsuya Yamada, Kei Takahashi, Takashi Dan, Keizo Kaneko, Shinjiro Kodama, Yoichiro Asai, Yuichiro Munakata, Akira Endo, Hiroto Sugawara, Yohei Kawana, Junpei Yamamoto, Tomohito Izumi, Shojiro Sawada, Junta Imai, Toshio Miyata and Hideki Katagiri
    • Journal Title

      Front Pharmacol.

      Volume: 11 Pages: 943-943

    • DOI

      10.3389/fphar.2020.00943

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Vascular resistance of carotid and vertebral arteries is associated with retinal microcirculation measured by laser speckle flowgraphy in patients with type 2 diabetes mellitus2020

    • Author(s)
      Sawada Shojiro、Tsuchiya Satoko、Kodama Shinjiro、Kurosawa Satoko、Endo Akira、Sugawara Hiroto、Hosaka Shinichiro、Kawana Yohei、Asai Yoichiro、Yamamoto Junpei、Munakata Yuichiro、Izumi Tomohito、Takahashi Kei、Kaneko Keizo、Imai Junta、Ito Azusa、Yasuda Masayuki、Kunikata Hiroshi、Nakazawa Toru、Katagiri Hideki
    • Journal Title

      Diabetes Research and Clinical Practice

      Volume: 165 Pages: 108240-108240

    • DOI

      10.1016/j.diabres.2020.108240

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 嗅覚受容体は膵β細胞に発現しグルコース応答性インスリン分泌を促進する2019

    • Author(s)
      山田 哲也, 宗像 佑一郎, 片桐 秀樹
    • Organizer
      第92回日本生化学会大会
    • Related Report
      2019 Research-status Report
  • [Book] Diabetes Strategy(嗅覚受容体は膵β細胞に発現し, グルコース応答性インスリン分泌を促進する)(Vol.9 No.4)2019

    • Author(s)
      宗像佑一郎, 山田哲也, 片桐秀樹
    • Total Pages
      36
    • Publisher
      先端医学社
    • ISBN
      9784865504323
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2022-01-27  

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