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Regulatory mechanism of gastrointestinal motility by circadian rhythms

Research Project

Project/Area Number 20K06714
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 44040:Morphology and anatomical structure-related
Research InstitutionSaitama University

Principal Investigator

SAKAI TAKAFUMI  埼玉大学, その他部局等, 学長 (40235114)

Co-Investigator(Kenkyū-buntansha) 坂田 一郎  埼玉大学, 理工学研究科, 教授 (80610831)
竹見 祥大  埼玉大学, 理工学研究科, 助教 (70871440)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords消化管運動 / サーカディアンリズム / ホルモン / 時計遺伝子 / スンクス / サーカディアン / 大腸運動 / 消化管ホルモン
Outline of Research at the Start

従来のヒトやイヌを用いた消化管運動の研究は、その大きさ故に詳細な分子生物学的な研究が困難であった。一方、有用な小型実験動物であるラットやマウスは、消化管運動がヒトやイヌとは大きく異なり、消化管運動のモデル動物として利用できない。近年、小型哺乳動物であるスンクスをモデル動物として用いることでホルモンと神経系による消化管運動制御メカニズムの詳細の多くが明らかとなってきている。さらに、現在遺伝子改変スンクスを作製中であることから、時計遺伝子ノックアウトスンクスなどを用いた消化管運動機構の研究によって、これまで実験が困難であったサーカディアンリズムとウルトラディアンリズムの関連性の解明を行う。

Outline of Final Research Achievements

The purpose of this study was to clarify the relationship between circadian rhythms and gastrointestinal motility. We found that mRNA expression of ghrelin, a stomach derived hormone important for the gastric motility, exhibited diurnal variation and was regulated by the clock gene REV-ERB. We also found that colonic motility is affected by restricted feeding, and that the expression of the clock gene in colon was also fluctuated. We also revealed that vagal and sympathetic nerves were involved in the diurnal rhythm of colonic motility. The results of this study are expected to contribute to our understanding of the diurnal rhythm of gastrointestinal motility.

Academic Significance and Societal Importance of the Research Achievements

本研究は、消化管運動を制御するホルモン及び自律神経と、時計遺伝子や摂食との関連について新しい知見を得た。これまで、時差ボケやナイトワーカーのヒトでの消化管運動機能不調の原因は明らかではなかったが、本研究によって基盤的知見を得ることができたことは、当該分野において学術的意義が高いと考えられる。また、今後トランスレーショナル研究に展開していくことで、ヒトの消化管機能疾患患者に対する治療法や薬剤の開発につながることが期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (11 results)

All 2022 2021 2020 Other

All Journal Article (8 results) (of which Peer Reviewed: 5 results) Presentation (1 results) Remarks (2 results)

  • [Journal Article] Molecular cloning of cholecystokinin (CCK) and CCK-A receptor and mechanism of CCK-induced gastrointestinal motility in Suncus murinus2022

    • Author(s)
      Takemi Shota、Honda Wataru、Yokota Naho、Sekiya Haruka、Miura Takashi、Wada Reiko、Sakai Takafumi、Sakata Ichiro
    • Journal Title

      General and Comparative Endocrinology

      Volume: 327 Pages: 114074-114074

    • DOI

      10.1016/j.ygcen.2022.114074

    • Related Report
      2022 Annual Research Report
  • [Journal Article] The Actions of Centrally Administered Nesfatin-1 on Emesis, Feeding, and Locomotor Activity in Suncus murinus (House Musk Shrew)2022

    • Author(s)
      Lu Zengbing、Cui Dexuan、Liu Julia Yuen Hang、Jiang Bin、Ngan Man Piu、Sakata Ichiro、Takemi Shota、Sakai Takafumi、Lin Ge、Chan Sze Wa、Rudd John A.
    • Journal Title

      Frontiers in Pharmacology

      Volume: 13

    • DOI

      10.3389/fphar.2022.858522

    • Related Report
      2022 Annual Research Report
  • [Journal Article] The basics of the study of gastrointestinal motility2021

    • Author(s)
      竹見 祥大、坂田 一郎、坂井 貴文
    • Journal Title

      Nippon Shokakibyo Gakkai Zasshi

      Volume: 118 Issue: 2 Pages: 107-113

    • DOI

      10.11405/nisshoshi.118.107

    • NAID

      130007983385

    • ISSN
      0446-6586, 1349-7693
    • Year and Date
      2021-02-10
    • Related Report
      2021 Research-status Report 2020 Research-status Report
  • [Journal Article] Diurnal changes of colonic motility and regulatory factors for colonic motility in Suncus murinus2021

    • Author(s)
      Kobayashi Yuki、Takemi Shota、Sakai Takafumi、Shibata Chikashi、Sakata Ichiro
    • Journal Title

      Neurogastroenterology & Motility

      Volume: - Issue: 6

    • DOI

      10.1111/nmo.14302

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] The suppressive effect of REVERBs on ghrelin and GOAT transcription in gastric ghrelin-producing cells2021

    • Author(s)
      Iijima Mio、Takemi Shota、Aizawa Sayaka、Sakai Takafumi、Sakata Ichiro
    • Journal Title

      Neuropeptides

      Volume: 90 Pages: 102187-102187

    • DOI

      10.1016/j.npep.2021.102187

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] The role of central corticotrophin‐releasing factor receptor signalling in plasma glucose maintenance through ghrelin secretion in calorie‐restricted mice2021

    • Author(s)
      Kimura Risa、Kondo Daisuke、Takemi Shota、Fujishiro Miyuki、Tsukahara Shinji、Sakai Takafumi、Sakata Ichiro
    • Journal Title

      Journal of Neuroendocrinology

      Volume: 33 Issue: 3

    • DOI

      10.1111/jne.12961

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] The inhibitory effect of somatostatin on gastric motility in <i>Suncus murinus</i>2020

    • Author(s)
      Sekiya Haruka、Yokota Naho、Takemi Shota、Nakayama Keiji、Okada Hiroki、Sakai Takafumi、Sakata Ichiro
    • Journal Title

      Journal of Smooth Muscle Research

      Volume: 56 Issue: 0 Pages: 69-81

    • DOI

      10.1540/jsmr.56.69

    • NAID

      130007973252

    • ISSN
      0916-8737, 1884-8796
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ghrelin-cell physiology and role in the gastrointestinal tract2020

    • Author(s)
      Sakata Ichiro、Takemi Shota
    • Journal Title

      Current Opinion in Endocrinology, Diabetes & Obesity

      Volume: 28 Issue: 2 Pages: 238-242

    • DOI

      10.1097/med.0000000000000610

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 消化管運動研究の小型モデル動物である スンクスを用いた排便調節機構の検討2022

    • Author(s)
      鈴木美羽、小林 優輝、竹見祥大、坂田 一郎
    • Organizer
      第24 回日本神経消化器病学会
    • Related Report
      2022 Annual Research Report
  • [Remarks] 埼玉大学理学部生体制御学科細胞制御学研究室

    • URL

      http://cell.seitai.saitama-u.ac.jp/

    • Related Report
      2022 Annual Research Report
  • [Remarks] 埼玉大学理学部生体制御学科

    • URL

      http://seitai.saitama-u.ac.jp/

    • Related Report
      2020 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

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