• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Elucidation of the basis for transmission of the cholecystokinin receptor CCK1R in the brain-gut correlation

Research Project

Project/Area Number 21K06746
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48010:Anatomy-related
Research InstitutionHokkaido University

Principal Investigator

konno kohtarou  北海道大学, 医学研究院, 助教 (20599641)

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コレシストキニン / CCK / 脳腸相関 / 延髄 / 孤束核 / 最後野 / 迷走神経
Outline of Research at the Start

コレシストキニン(CCK)は上部小腸から分泌され、食後の胃酸、膵液、胆汁の分泌を制御する重要な消化管ホルモンである。末梢型のCCK受容体は標的となる消化腺や胆嚢に発現するだけでなく、脳にも一部発現し摂食行動や消化機能制御に影響を与えることがこれまで報告されている。しかし、「消化管で産生放出されたCCKが、どのようにして脳に作用するか」という基本的情報は大きく欠落している。本研究では、CCK1R特異的抗体および完全欠失型・誘導型のCCK1R受容体欠損マウスを用いて、CCK1Rを介する脳腸機能相関の伝達基盤と生理機能の解明を目指す。

Outline of Final Research Achievements

Gut hormone cholecystokinin (CCK) mediates postprandial reduction of food intake by acting on CCK1 receptors (CCK1R) on vagal afferents. The present study examined CCK1R expression in the dorsal vagal complex (DVC) in the mouse brain. Specific immunohistochemical labeling for CCK1R was intense in the central branch of vagal afferents terminating in the nucleus tractus solitarius (NTS) and area postrema (AP). Moreover, CCK1R-immunoreactive elements in the NTS and AP were overlapped with diffusing areas of Evans Blue dye administered into the circulation. These results suggest the possibility of activation of CCK1R in the DVC by hormonal CCK diffusing from the AP lacking the blood-brain barrier.

Academic Significance and Societal Importance of the Research Achievements

現在に至るまで「消化管で産生放出されたCCKが、どのようにして脳に作用するか」という基本的情報は大きく欠落していた。CCK1Rの詳細な局在解析により、CCK1Rは延髄の迷走神経背側複合体に局在することが明らかとなった。さらに、血液脳関門を欠く最後野から拡散するホルモン性CCKによってDVCのCCK1Rを活性化する可能性が示唆されることから、CCKが関与する脳腸機能相関の情報伝達基盤の解明に大きく寄与する研究成果である。

Report

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

    (10 results)

All 2024 2023 2022 2021

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (5 results) (of which Invited: 1 results)

  • [Journal Article] Glyoxal fixation: An approach to solve immunohistochemical problem in neuroscience research2023

    • Author(s)
      Konno Kohtarou、Yamasaki Miwako、Miyazaki Taisuke、Watanabe Masahiko
    • Journal Title

      Science Advances

      Volume: 9 Issue: 28 Pages: 1-14

    • DOI

      10.1126/sciadv.adf7084

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fluorochromized tyramide-glucose oxidase as a multiplex fluorescent tyramide signal amplification system for histochemical analysis.2022

    • Author(s)
      Yamauchi K, Okamoto S, Ishida Y, Konno K, Hoshino K, Furuta T, Takahashi M, Koike M, Isa K, Watanabe M, Isa T, Hioki H.
    • Journal Title

      Sci Rep

      Volume: 12 Issue: 1 Pages: 14807-14807

    • DOI

      10.1038/s41598-022-19085-9

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neutrophils delay repair process in Wallerian degeneration by releasing NETs outside the parenchyma.2022

    • Author(s)
      Yamamoto Y, Kadoya K, Terkawi MA, Endo T, Konno K, Watanabe M, Ichihara S, Hara A, Kaneko K, Iwasaki N, Ishijima M.
    • Journal Title

      Life Sci Alliance

      Volume: 5 Issue: 10 Pages: e202201399-e202201399

    • DOI

      10.26508/lsa.202201399

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Intravenous transplantation of amnion-derived mesenchymal stem cells promotes functional recovery and alleviates intestinal dysfunction after spinal cord injury.2022

    • Author(s)
      Takamiya S, Kawabori M, Yamazaki K, Yamaguchi S, Tanimori A, Yamamoto K, Ohnishi S, Seki T, Konno K, Tha KK, Hashimoto D, Watanabe M, Houkin K, Fujimura M.
    • Journal Title

      PLoS One

      Volume: 17 Issue: 7 Pages: e0270606-e0270606

    • DOI

      10.1371/journal.pone.0270606

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Excitatory and inhibitory receptors utilize distinct post- and trans-synaptic mechanisms in vivo.2021

    • Author(s)
      Miyazaki T, Morimoto-Tomita M, Berthoux C, Konno K, Noam Y, Yamasaki T, Verhage M, Castillo PE, Watanabe M, Tomita S.
    • Journal Title

      Elife

      Volume: 10

    • DOI

      10.7554/elife.59613

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] マウス脳におけるNeuroligin1の領域依存的な興奮性・抑制性シナプス局在2024

    • Author(s)
      今野幸太郎、山崎美和子、渡辺雅彦
    • Organizer
      第129回日本解剖学会総会全国学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Calleja島におけるNeuroligin1の入力依存的局在特性2023

    • Author(s)
      今野幸太郎、山崎美和子、渡辺雅彦
    • Organizer
      第128回日本解剖学会総会全国学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] グルタミン酸受容体GluD1は高次脳機能領域に強く発現し、小脳では平行線維-介在細胞シナプスの形成に関与する2022

    • Author(s)
      今野幸太郎、渡辺雅彦
    • Organizer
      第96回日本薬理学会年会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] GluD1 interacts with Cbln1 to connect glutamatergic/cholinergic afferents from the parabigeminal nucleus to the visual thalamus and superior colliculus.2021

    • Author(s)
      Kotaro Konno, Kenji Sakimura, Michisuke Yuzaki, Masahiko Watanabe.
    • Organizer
      第44回日本神経科学大会
    • Related Report
      2021 Research-status Report
  • [Presentation] マウス脳におけるNeuroligin 1の発現および局在特性2021

    • Author(s)
      今野幸太郎、山崎美和子、渡辺雅彦
    • Organizer
      第127回日本解剖学会総会全国学術集会
    • Related Report
      2021 Research-status Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi