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Functional control of Luminal organ via myosin phosphatase regulator.

Research Project

Project/Area Number 19H03125
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 42020:Veterinary medical science-related
Research InstitutionThe University of Tokyo

Principal Investigator

Hori Masatoshi  東京大学, 大学院農学生命科学研究科(農学部), 教授 (70211547)

Co-Investigator(Kenkyū-buntansha) 江藤 真澄  岡山理科大学, 獣医学部, 教授 (20232960)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2021: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2020: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2019: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Keywords平滑筋 / 血管 / 消化管 / フォスファターゼ / ミオシン / CPI-17 / 血圧 / 蠕動 / 子宮 / Rhoキナーゼ / ホスファターゼ / 高血圧 / 収縮 / 消化管運動 / 気管 / 平滑筋細胞
Outline of Research at the Start

ミオシンのリン酸化は、平滑筋細胞や多くの非筋細胞の収縮、細胞運動、遊走、物質透過
性、および細胞内物質輸送などに関与する。ミオシンのリン酸化はミオシン軽鎖キナーゼとミオシンホスファターゼ(MPPase)の活性バランスにより調節される。MPPase活性はPKC/CPI-17経路とROCK/MYPT1経路という二つの負の制御経路の調節を受けるが、これらの経路の生体内での生理・病態生理学的役割は依然不明である。本研究では、CPI-17に着目し、CPI-17変異体導入マウスと同欠損マウスを作出し、各管腔臓器の運動生理機能や疾患モデルでの病態発現におけるCPI-17の役割を解明する。

Outline of Final Research Achievements

One pathway that regulates contraction-relaxation of visceral luminal organs is the myosin phosphatase (MPPase) inhibitory pathway through phosphorylation of Thr38 of CPI-17 via PKC, an inhibitor of MPPase. In this study, we used CPI-17 knockout (KO) and non-phosphorylation mimetic [Thr38Ser]CPI-17 knock-in (TS) mice to examine the importance of CPI-17 in normal blood pressure and normal gastrointestinal motility, as well as in hypertension. The results revealed that CPI-17 plays an important role in the maintenance of normal blood pressure and the development of salt-loaded hypertension. On the other hand, it was suggested that CPI-17 does not play a major role in the maintenance of normal gastrointestinal transport capacity, or that other pathways may substitute for it in KO and TA mice.

Academic Significance and Societal Importance of the Research Achievements

CPI-17は多くの内臓臓器の運動を制御する平滑筋細胞特異的に発現するミオシンホスファターゼ(MPPase)の内因性阻害タンパク質であり、高血圧や、下痢や便秘、分娩異常、気管支喘息、失禁や頻尿など多くの疾患とも関連性がある。したがって、本研究で得られたCPI-17のin vivoでの生理・病態生理学的機能の解明は極めて学術的に高い研究であり、人や動物の健康維持にとっても極めて社会的意義の大きい基礎研究として位置づけられる。今後、さらに本テーマに関連する基盤研究の継続が、疾患治療薬の開発や臓器の老化研究の基盤構築にも繋がることが予測され、学術的にも社会的にも意義のある研究である。

Report

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

    (10 results)

All 2023 2022 2021 2020

All Journal Article (5 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (5 results) (of which Invited: 1 results)

  • [Journal Article] Interstitial cells of Cajal in gastrointestinal inflammatory diseases2023

    • Author(s)
      Kaji N, Hori M
    • Journal Title

      Journal of Smooth Muscle Research

      Volume: 59 Issue: 0 Pages: 1-13

    • DOI

      10.1540/jsmr.59.1

    • ISSN
      0916-8737, 1884-8796
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Characterization of Serum Metabolome and Proteome Profiles Identifies SNX5 Specific for Pregnancy Failure in Holstein Heifers2022

    • Author(s)
      Kusama Kazuya、Bai Rulan、Matsuno Yuta、Ideta Atsushi、Sakurai Toshihiro、Nagaoka Kentaro、Hori Masatoshi、Imakawa Kazuhiko
    • Journal Title

      Life

      Volume: 12 Issue: 2 Pages: 309-309

    • DOI

      10.3390/life12020309

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Intestinal Stem Cells and Immune Cell Relationships: Potential Therapeutic Targets for Inflammatory Bowel Diseases.2021

    • Author(s)
      Hou Q, Huang J, Ayansola H, Hori M, Zhang B
    • Journal Title

      Front Immunol.

      Volume: 11 Pages: 623691-623691

    • DOI

      10.3389/fimmu.2020.623691

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Genistein inhibits colonic goblet cell loss and colorectal inflammation induced by Salmonella Typhimurium infection.2021

    • Author(s)
      He Y, Ayansola H, Hou Qihang, Liao Chaoyong, Lei, Jiaqi, Lai Yujiao, Jiang Qiuyu, Hori M,Zhang Bingkun
    • Journal Title

      Molecular Nutrition Food Research

      Volume: 1 Issue: 16 Pages: 2100209-2100209

    • DOI

      10.1002/mnfr.202100209

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Contribution of serotonin 3A receptor to motor function and its expression in the gastrointestinal tract.2020

    • Author(s)
      Aikiyo S, Kishi K, Kaji N, Mikawa S, Kondo M, Shimada S, Hori M.
    • Journal Title

      Digestion

      Volume: - Issue: 4 Pages: 1-11

    • DOI

      10.1159/000509209

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 小腸、大腸PDGFRα+細胞の生理機能解明2022

    • Author(s)
      茶圓貴志、黒澤珠希、岸和寿、梶典幸、堀正敏
    • Organizer
      第146回日本薬理学会関東部会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 糖尿病が引き起こすカハール介在細胞による消化管運動異常2022

    • Author(s)
      堀 正敏、岸和寿、飯野哲、堀口和秀、鬼頭佳彦、中山晋介、梶典幸
    • Organizer
      第64回日本平滑筋学会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] I型糖尿病モデルマウスにおけるカハール介在細胞による消化管運動異常2022

    • Author(s)
      堀正敏、岸和寿、飯野哲、堀口和秀、鬼頭佳彦、中山晋介、梶典幸
    • Organizer
      第24回日本神経消化器病学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 収縮―細胞内カルシウム同時測定技術の開発とカルシウム感受性増加機構2021

    • Author(s)
      堀 正敏、佐藤晃一、尾崎博、唐木英明
    • Organizer
      第63回日本平滑筋学会総会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Close relationship between networks of interstitial cells of Cajal and gastrointestinal transit in vivo.2021

    • Author(s)
      Kamizaki M, Kishi K, Kaji N, Iino S, Hori M
    • Organizer
      第94回日本薬理学会年会
    • Related Report
      2021 Annual Research Report

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Published: 2019-04-18   Modified: 2025-04-22  

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