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Mechanisms of tyrosine sensing for adaptation to protein scarcity

Research Project

Project/Area Number 22K20731
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0801:Pharmaceutical sciences and related fields
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Kosakamoto Hina  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, 基礎科学特別研究員 (50962908)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords栄養応答 / アミノ酸感知 / チロシン / ショウジョウバエ / 核内受容体 / スプライシング / アミノ酸
Outline of Research at the Start

本研究ではチロシンセンサーとしての可能性を見出したオーファン核内受容体のATF4活性化への寄与を検証し、機能解析を行うとともに、センシングに関与する因子をスクリーニングによって網羅的に探索する。ショウジョウバエを用いた遺伝学的操作に加え、マウス前脂肪細胞(3T3-L1細胞)を用いたスクリーニングや生化学的手法を融合させることで、チロシンがもたらす栄養応答メカニズムの全貌を解明する。

Outline of Final Research Achievements

In this study, I aimed to elucidate the mechanism by which Drosophila melanogaster recognizes tyrosine, one of the amino acids, and adapts to its deficiency. To unravel the unknown tyrosine-sensing mechanism, I focused on a nuclear receptor predicted to bind to tyrosine and elucidated its contribution to tyrosine response through ligand binding assay and analysis of physiological functions. Furthermore, screening using mammalian cells revealed the potential involvement of a splicing factor in tyrosine sensing.

Academic Significance and Societal Importance of the Research Achievements

本研究により、これまでほとんど知られてこなかった生体内でのアミノ酸認識から端を発する栄養応答機構について、新たな知見を得ることができた。栄養応答の破綻は代謝疾患やがんの悪性度、老化といった広範な生理状態あるいは病態に影響を及ぼす。重要性が見過ごされていたチロシンという非必須アミノ酸が持つ、隠れた生理作用やその作用機序の解明は、健康長寿社会の実現に資する可能性が期待される。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (13 results)

All 2024 2023 2022

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (9 results) (of which Int'l Joint Research: 3 results,  Invited: 4 results)

  • [Journal Article] Epidermal tyrosine catabolism is crucial for metabolic homeostasis and survival against high-protein diets in <i>Drosophila</i>2024

    • Author(s)
      Kosakamoto Hina、Miura Masayuki、Obata Fumiaki
    • Journal Title

      Development

      Volume: 151 Issue: 1

    • DOI

      10.1242/dev.202372

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Early-adult methionine restriction reduces methionine sulfoxide and extends lifespan in Drosophila2023

    • Author(s)
      Kosakamoto Hina、Obata Fumiaki、Kuraishi Junpei、Aikawa Hide、Okada Rina、Johnstone Joshua N.、Onuma Taro、Piper Matthew D. W.、Miura Masayuki
    • Journal Title

      Nature Communications

      Volume: 14 Issue: 1 Pages: 7832-7832

    • DOI

      10.1038/s41467-023-43550-2

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Epidermal tyrosine catabolism is critical for metabolic homeostasis and survival against high-protein diets in Drosophila2023

    • Author(s)
      Kosakamoto Hina、Miura Masayuki、Obata Fumiaki
    • Journal Title

      BioRxiv

      Volume: -

    • DOI

      10.1101/2023.04.20.537645

    • Related Report
      2022 Research-status Report
  • [Journal Article] Sensing of the non-essential amino acid tyrosine governs the response to protein restriction in Drosophila2022

    • Author(s)
      Kosakamoto Hina、Okamoto Naoki、Aikawa Hide、Sugiura Yuki、Suematsu Makoto、Niwa Ryusuke、Miura Masayuki、Obata Fumiaki
    • Journal Title

      Nature Metabolism

      Volume: 4 Issue: 7 Pages: 944-959

    • DOI

      10.1038/s42255-022-00608-7

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] The essential function of a nonessential amino acid as an indicator of protein satiety2024

    • Author(s)
      Hina Kosakamoto
    • Organizer
      International Day of Women and Girls in Science Symposium
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Early-life amino acid sensing for lifespan regulation in Drosophila2024

    • Author(s)
      Hina Kosakamoto
    • Organizer
      Dietology Symposium
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Tyrosine sensing regulates adaptation to changing protein environments in Drosophila2023

    • Author(s)
      Hina Kosakamoto, Naoki Okamoto, Ryusuke Niwa, Masayuki Miura, and Fumiaki Obata
    • Organizer
      Mechanisms of Metabolic Signaling
    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Non-essential amino acid tyrosine regulates organismal lifespan and feeding behaviour2023

    • Author(s)
      Hina Kosakamoto, Fumiaki Obata
    • Organizer
      第6回アジア太平洋ショウジョウバエ学会
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 非必須アミノ酸チロシンの感知による栄養シグナル制御2023

    • Author(s)
      小坂元 陽奈
    • Organizer
      第96回日本生化学会大会
    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Invited
  • [Presentation] Adaptive responses to protein restriction governed by nonessential amino acid tyrosine in Drosophila larvae2022

    • Author(s)
      Hina Kosakamoto, Naoki Okamoto, Ryusuke Niwa, Masayuki Miura, and Fumiaki Obata
    • Organizer
      55th Annual Meeting of the Japanese Society for Developmental Biology
    • Related Report
      2022 Research-status Report
  • [Presentation] Sensing of the non-essential amino acid tyrosine governs the response to dietary protein intake in Drosophila2022

    • Author(s)
      Hina Kosakamoto, Naoki Okamoto, Ryusuke Niwa, Masayuki Miura, and Fumiaki Obata
    • Organizer
      第15回日本ショウジョウバエ研究集会
    • Related Report
      2022 Research-status Report
  • [Presentation] Sensing of the non-essential amino acid tyrosine governs the response to dietary protein intake in Drosophila2022

    • Author(s)
      Hina Kosakamoto, Naoki Okamoto, Ryusuke Niwa, Masayuki Miura, and Fumiaki Obata
    • Organizer
      Sensing of the non19th International Congress of Developmental Biology-essential amino acid tyrosine governs the response to dietary protein intake in Drosophila
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] チロシン感知が可能とするタンパク質飢餓をしのぐ適応応答2022

    • Author(s)
      小坂元 陽奈
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Research-status Report
    • Invited

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Published: 2022-09-01   Modified: 2025-01-30  

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