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The mechanism of temperature compensation in circadian clocks

Research Project

Project/Area Number 18K14749
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 44050:Animal physiological chemistry, physiology and behavioral biology-related
Research InstitutionKyushu University

Principal Investigator

Itoh Taichi  九州大学, 基幹教育院, 助教 (20769765)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsショウジョウバエ / 体内時計 / 概日リズム / 温度補償性 / ヒドラ / 時計遺伝子
Outline of Final Research Achievements

To elucidate the control mechanism underlying temperature compensation in circadian rhythms at the system level, I focused on the translational control of one of the clock genes, period (per), using Drosophila. I found that TYF, which is a translational regulator of per gene, has a temperature compensating property for binding to per mRNA, but has a temperature dependent in translational control. In addition, since the temperature compensation of circadian rhythms was abnormal even in the Drosophila strain with optimized codons of per gene, I concluded that the translation of per gene has an important molecular mechanism that produces temperature compensation even at the system level.

Academic Significance and Societal Importance of the Research Achievements

ヒトを含めた多くの生物は生理・代謝・行動において約24時間の周期性を示す。これを概日リズムと呼ぶ。概日リズムに異常が生じると様々な病のリスクが上昇することが知られている。本研究は、種間共通の概日リズム基本原理の一つ、周期の温度補償性の分子機構を解明することを目的とした研究である。本成果では、温度補償性の分子機構の完全解明には至らなかったものの、今後重点的に研究すべき重要な分子機構を発見することができた。本成果を足がかりとして概日リズムの基本原理を完全に解明することができれば、概日リズム異常から誘導される様々な病を副作用なしに治療する手段や創薬等に貢献することが可能となるはずである。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (11 results)

All 2021 2020 2019 2018

All Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (7 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Journal Article] Immature symbiotic system between horizontally transmitted green algae and brown hydra2021

    • Author(s)
      Miyokawa Ryo、Kanaya Hiroyuki J.、Itoh Taichi Q.、Kobayakawa Yoshitaka、Kusumi Junko
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 2921-2921

    • DOI

      10.1038/s41598-021-82489-6

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A sleep-like state in Hydra unravels conserved sleep mechanisms during the evolutionary development of the central nervous system2020

    • Author(s)
      Kanaya Hiroyuki J.、Park Sungeon、Kim Ji-hyung、Kusumi Junko、Krenenou Sofian、Sawatari Etsuko、Sato Aya、Lee Jongbin、Bang Hyunwoo、Kobayakawa Yoshitaka、Lim Chunghun、Itoh Taichi Q.
    • Journal Title

      Science Advances

      Volume: 6 Issue: 41

    • DOI

      10.1126/sciadv.abb9415

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Hydra vulgaris exhibits day-night variation in behavior and gene expression levels2019

    • Author(s)
      Kanaya Hiroyuki J.、Kobayakawa Yoshitaka、Itoh Taichi Q.
    • Journal Title

      Zoological Letters

      Volume: 5 Issue: 1

    • DOI

      10.1186/s40851-019-0127-1

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ataxin-2: A versatile posttranscriptional regulator and its implication in neural function2018

    • Author(s)
      Lee Jongbo、Kim Minjong、Itoh Taichi Q.、Lim Chunghun
    • Journal Title

      Wiley Interdisciplinary Reviews: RNA

      Volume: 9 Issue: 6

    • DOI

      10.1002/wrna.1488

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Circadian and sleep behavior in clockless and brainless animal Hydra2021

    • Author(s)
      Itoh Taichi Q.
    • Organizer
      The 2nd Korean Biological Rhythm Society Symposium
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 共生ブラウンヒドラにおける遺伝子発現と共生体獲得様式の関係2020

    • Author(s)
      御代川涼、金谷啓之、伊藤太一、小早川義尚、楠見淳子
    • Organizer
      日本動物学会 第91回大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 刺胞動物ヒドラの時計と睡眠2020

    • Author(s)
      金谷啓之, Sungeon Park, Ji-hyung Kim, 楠見淳子, Sofian Krenenou, 猿渡悦子, 佐藤文, Jongbin Lee, Hyunwoo Bang, 小早川義尚, Chunghun Lim, 伊藤太一
    • Organizer
      第27回日本時間生物学会学術大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Discovery of a sleep-like state in Hydra vulgaris2019

    • Author(s)
      Itoh Taichi Q., Kanaya Hiroyuki J., Sawatari Etsuko, Sato Aya, Kobayakawa Yoshitaka.
    • Organizer
      第90回日本動物学会
    • Related Report
      2019 Research-status Report
  • [Presentation] Molecular mechanisms of sleep in the basal metazoan Hydra2019

    • Author(s)
      Kanaya Hiroyuki J., Sawatari Etsuko, Sato Aya, Kobayakawa Yoshitaka, Itoh Taichi Q.
    • Organizer
      第42回日本分子生物学会
    • Related Report
      2019 Research-status Report
  • [Presentation] Hydra vulgaris exhibits a sleep-like state induced by melatonin.2019

    • Author(s)
      Itoh Taichi Q.
    • Organizer
      Symposium on insect chronobiology
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Analysis of primitive sleep-wake cycle in hydra2018

    • Author(s)
      Kanaya Hiroyuki J.、Kobayakawa Yoshitaka、Itoh Taichi Q.
    • Organizer
      第25回日本時間生物学会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-12-28  

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