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Toward understanding of regulatory mechanism of body growth and metabolism based on optimal control theory

Research Project

Project/Area Number 17K19433
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Ecology and Evolution (including anthropology), and related fields
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Nishimura Takashi  国立研究開発法人理化学研究所, 生命機能科学研究センター, チームリーダー (90568099)

Research Collaborator Hironaka Ken-ichi  
Project Period (FY) 2017-06-30 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2018: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2017: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords遺伝学 / 進化生態学 / 代謝生理学 / 個体成長 / 体サイズ / 内分泌ホルモン / 進化 / 生態学 / 生理学 / ショウジョウバエ
Outline of Final Research Achievements

In order to understand how species-specific final body size is determined, it is important to clarify how gene-environment interactions affect growth and metabolism at the level of organisms. The growth of many multicellular organisms are divided into two phases: the growth phase and the maturation phase. The progression to the maturation phase irreversibly determines the final body size. Using the fruit fly Drosophila as a model animal, we found that the threshold, which determins the progression to the maturation phase, adaptively optimizes energy allocation to support sexual maturation. Moreover, we reveaed that metabolic remodeling occurs after reaching the threshold through the action of endocrine hormones. Our study contributes to our understanding of the metabolic regulation as a life history strategy.

Academic Significance and Societal Importance of the Research Achievements

本研究は、発生と生態という異なる時空間スケールの階層をつなぐ数理モデルを構築し、検証する点に学術的な意義がある。こうした方法論の発展は今後の生物学をより統合的に理解することに貢献すると考えられる。また、本研究で対象としている適応的な栄養応答性の代謝変化は、昆虫に限られた現象ではなく、多くの動食物にも共通しうる現象である。ヒトでは胎児期を低栄養状態で過ごした成人は糖尿病リスクが高く、発生の可塑性が代謝や成長に影響を与える例として知られている。本研究成果は、このような発生可塑性の理解や、成熟期特有の代謝変化の理解にも繋るため、社会的意義は高い。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (8 results)

All 2019 2018 2017 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (5 results) (of which Int'l Joint Research: 2 results) Remarks (1 results)

  • [Journal Article] The role of glycogen in development and adult fitness in Drosophila.2019

    • Author(s)
      Yamada T, Habara O, Yoshii Y, Matsushita R, Kubo H, Nojima Y, Nishimura T
    • Journal Title

      Development

      Volume: 146(8)

    • DOI

      10.1242/dev.176149

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fat body glycogen serves as a metabolic safeguard for the maintenance of sugar levels in Drosophila.2018

    • Author(s)
      Yamada T, Habara O, Kubo H, Nishimura T.
    • Journal Title

      Development

      Volume: 145(6) Issue: 6 Pages: 1-12

    • DOI

      10.1242/dev.158865

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] 生活史戦略としての代謝 ~ショウジョウバエ糖代謝における飢餓応答を例に~2019

    • Author(s)
      廣中謙一, 山田 貴佑記, 羽原 興子, 森下喜弘, 西村隆史
    • Organizer
      2018年度定量生物学の会年
    • Related Report
      2018 Annual Research Report
  • [Presentation] Scaling of critical weight for metamorphosis in the genus Drosophila2017

    • Author(s)
      Hironaka K-I, Fujimoto K, Nishimura T
    • Organizer
      The 3rd International Insect Hormone Workshop
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Significance of sugar metabolism for developmental transition in Drosophila2017

    • Author(s)
      Yamada T, Habara O, and Nishimura T
    • Organizer
      The 3rd International Insect Hormone Workshop
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] ショウジョウバエ蛹期の変態過程における代謝調節2017

    • Author(s)
      西村隆史
    • Organizer
      第4回発生における代謝を考える会
    • Related Report
      2017 Research-status Report
  • [Presentation] ショウジョウバエ蛹期の変態過程における糖代謝の調節機構2017

    • Author(s)
      山田貴佑記, 羽原興子, 西村隆史
    • Organizer
      第40回日本分子生物学会年会
    • Related Report
      2017 Research-status Report
  • [Remarks] 脂肪体のグリコーゲンは飢餓に対する最後の砦

    • URL

      http://www.cdb.riken.jp/news/2018/researches/0316_15071.html

    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-07-21   Modified: 2020-03-30  

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