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2023 Fiscal Year Final Research Report

Mechanisms of tyrosine sensing for adaptation to protein scarcity

Research Project

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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
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
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.

Free Research Field

分子栄養学

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。

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Published: 2025-01-30  

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