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Mechanism of nutritional programming in neurons

Research Project

Project/Area Number 19H03367
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 47030:Pharmaceutical hygiene and biochemistry-related
Research InstitutionInstitute of Physical and Chemical Research (2021)
The University of Tokyo (2019-2020)

Principal Investigator

Obata Fumiaki  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 (40748539)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2021: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2020: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2019: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Keywords栄養応答 / アミノ酸 / チロシン / ショウジョウバエ / タンパク質制限 / DOHaD / 腸内細菌 / 自然免疫 / ATF4 / 栄養 / 神経
Outline of Research at the Start

疫学的な研究から、発生・発達期の環境が、成人の生命活動に強く影響することが示唆されてきた。しかしその分子機構については明らかになっていない。申請者らのこれまでの研究から発生期の食餌中チロシンやグルタミン酸が、成体の生理状態を変化させることが明らかになってきた。これらのアミノ酸は、神経伝達物質そのもの、あるいはその前駆体として、神経機能を不可逆的に変化させ、成体の生理状態を規定する可能性がある。本研究では、食餌中アミノ酸による神経発生・発達の栄養プログラミング仮説を検証し、その分子機構を解明する。

Outline of Final Research Achievements

From this study, no significant changes in dopamine-related phenotypes, such as increased dopamine levels or enhanced memory learning ability, were observed in adults, which developed with tyrosine deficiency. Therefore, the involvement of dopamine in the irreversible physiological changes by tyrosine restriction was found to be limited. On the other hand, in the developing animals, restriction of the non-essential amino acid tyrosine induces ATF4-mediated adaptive responses to protein restriction, such as decreased protein synthesis, suppression of mTORC1 signalling and increased food intake.

Academic Significance and Societal Importance of the Research Achievements

非必須アミノ酸はがんなどの増殖性の高い細胞種で特異的に要求性が高まることから、治療戦略としてその食餌制限の有効性が着目されている。一方で正常個体では体内で十分生合成できるとされ、成長・生殖・摂食・寿命といった生理応答に対する重要性は必須アミノ酸と比べて乏しいと考えられてきた。タンパク質欠乏を感知し、環境適応するための鍵が一つの非必須アミノ酸であるという本研究の発見は、栄養応答研究分野に重要な知見をもたらすものと期待する。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (10 results)

All 2022 2021 2020 2019

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (7 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Journal Article] Activation of innate immunity during development induces unresolved dysbiotic inflammatory gut and shortens lifespan2021

    • Author(s)
      Yamashita Kyoko、Oi Ayano、Kosakamoto Hina、Yamauchi Toshitaka、Kadoguchi Hibiki、Kuraishi Takayuki、Miura Masayuki、Obata Fumiaki
    • Journal Title

      Disease Models & Mechanisms

      Volume: 14 Issue: 9 Pages: 49103-49103

    • DOI

      10.1242/dmm.049103

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The sugar-responsive enteroendocrine neuropeptide F regulates lipid metabolism through glucagon-like and insulin-like hormones in Drosophila melanogaster2021

    • Author(s)
      Yoshinari Yuto、Kosakamoto Hina、Kamiyama Takumi、Hoshino Ryo、Matsuoka Rena、Kondo Shu、Tanimoto Hiromu、Nakamura Akira、Obata Fumiaki、Niwa Ryusuke
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 4818-4818

    • DOI

      10.1038/s41467-021-25146-w

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Gut Bacterial Species Distinctively Impact Host Purine Metabolites during Aging in Drosophila.2020

    • Author(s)
      Yamauchi T, Oi A, Kosakamoto H, Akuzawa-Tokita Y, Murakami T, Mori H, Miura M and *Obata F.
    • Journal Title

      iScience

      Volume: 23 Issue: 9 Pages: 101477-101477

    • DOI

      10.1016/j.isci.2020.101477

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ショウジョウバエ遺伝学で明らかになる栄養応答基盤2022

    • Author(s)
      小幡史明
    • Organizer
      日本農芸化学会2022年度大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 腸内細菌によるショウジョウバエ寿命制御基盤2021

    • Author(s)
      小幡史明、三浦正幸
    • Organizer
      第65回日本薬学会関東支部大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] ショウジョウバエ遺伝学を用いたアミノ酸生物学2020

    • Author(s)
      小幡史明、小坂元陽奈、三浦正幸
    • Organizer
      第43回日本分子生物学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 非必須アミノ酸がもたらす栄養応答と寿命制御2020

    • Author(s)
      小坂元陽奈、三浦正幸、小幡史明
    • Organizer
      第43回日本分子生物学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Developmental programming by diet in Drosophila2019

    • Author(s)
      Obata F, Yamauchi T, Miura M, Fons CO, Gould AP
    • Organizer
      DOHaD 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The effects of dietary non-essential amino acids on Drosophila physiology2019

    • Author(s)
      Hina Kosakamoto, Masayuki Miura, Fumiaki Obata
    • Organizer
      European Drosophila research conference
    • Related Report
      2019 Annual Research Report
  • [Presentation] The physiological responses induced by depleting dietary non-essential amino acids2019

    • Author(s)
      Hina Kosakamoto, Masayuki Miura, Fumiaki Obata
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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