• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Mechanisms and physiological functions of protein diversity production during translation that expand genetic information

Research Project

Project/Area Number 21K19206
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 43:Biology at molecular to cellular levels, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Miura Masayuki  東京大学, 大学院薬学系研究科(薬学部), 教授 (50202338)

Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2021: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords翻訳 / コロナウイルス / フレームシフト / eEF2 / ジフタミド修飾 / ショウジョウバエ / フレームシスト
Outline of Research at the Start

本研究では、ジフタミド化eEF2の-1 frameshift翻訳機構への関わりをショウジョウバエで明らかにし、さらにジフタミド化eEF2を介した-1 frameshiftが多細胞動物において機能する生理的な役割を明らかにする。本研究の知見はセントラルドグマにおいてこれまで見過ごされてきた翻訳時のタンパク質多様性産生のメカニズムと生理機能を浮き彫りにするものである。また-1 frameshiftがコロナウイルス増殖の最初のステップに関わることから、本研究の成果はコロナウイルス増殖の宿主組織選択性、環境変化や細胞間相互作用による増殖への影響に関する理解を進めるものである。

Outline of Final Research Achievements

Diphthamide modification is an unique chemical modification made only to all eukaryotic translation elongation factor eEF2. Yeast diphthamide-modification mutants show reduced translation fidelity and increased frequency of -1 frameshift translation, but the regulatory mechanism and physiological significance in multicellular organisms remain unclear. As a method for detecting -1 frameshifts in vivo, we generated a reporter in which a -1 frameshift sequence (FSE) taken from SARS-Cov-2 is flanked by two different fluorescent proteins. This reporter revealed tissue- and sex-dependent differences in -1 frameshifts in Drosophila.

Academic Significance and Societal Importance of the Research Achievements

翻訳の多様性を示す現象に、一つのmRNAからポリプロテインを産生する現象がある。様々なウイルスはフレームシフトによって読み枠を変えることで産生するタンパク質の種類を増やすことが知られているが、コロナウイルスゲノムRNAはその塩基配列に-1 フレームシフトを可能にする情報が含まれている。-1フレームシフト翻訳に関わるeEF2ジフタミド化の多細胞生物における生理機能とその調節が明らかになることで、翻訳による遺伝子多様性発現や、翻訳の正確性を決める新たな仕組みが明らかになることが期待される。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (9 results)

All 2022 2021

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (3 results) (of which Invited: 3 results)

  • [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 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Caspase-3 regulates ureteric branching in mice via cell migration2021

    • Author(s)
      Awazu Midori、Yamaguchi Yoshifumi、Nagata Michio、Miura Masayuki、Hida Mariko
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 559 Pages: 28-34

    • DOI

      10.1016/j.bbrc.2021.04.081

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Hepatic resistance to cold ferroptosis in a mammalian hibernator Syrian hamster depends on effective storage of diet-derived α-tocopherol2021

    • Author(s)
      Anegawa Daisuke、Sugiura Yuki、Matsuoka Yuta、Sone Masamitsu、Shichiri Mototada、Otsuka Reo、Ishida Noriko、Yamada Ken-ichi、Suematsu Makoto、Miura Masayuki、Yamaguchi Yoshifumi
    • Journal Title

      Communications Biology

      Volume: 4 Issue: 1 Pages: 796-796

    • DOI

      10.1038/s42003-021-02297-6

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evidence for the involvement of caspases in establishing proper cerebrospinal fluid hydrodynamics2021

    • Author(s)
      Yoshida Ayako、Kawata Daisuke、Shinotsuka Naomi、Yoshida Mariko、Yamaguchi Yoshifumi、Miura Masayuki
    • Journal Title

      Neuroscience Research

      Volume: 170 Pages: 145-153

    • DOI

      10.1016/j.neures.2020.12.006

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [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 Research-status Report
    • Peer Reviewed
  • [Journal Article] Amyotrophic lateral sclerosis‐associated Vap33 is required for maintaining neuronal dendrite morphology and organelle distribution in <i>Drosophila</i>2021

    • Author(s)
      Kamemura Kosuke、Chen Chun‐an、Okumura Misako、Miura Masayuki、Chihara Takahiro
    • Journal Title

      Genes to Cells

      Volume: 26 Issue: 4 Pages: 230-239

    • DOI

      10.1111/gtc.12835

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 個体老化を制御する栄養感受性臨界期の存在2022

    • Author(s)
      三浦正幸
    • Organizer
      第41回日本認知症学学術集会、第37回日本老年精神医学会合同開催
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Genetic control of animal aging by amino acids metabolism2021

    • Author(s)
      Masayuki Miura
    • Organizer
      第44回日本基礎老化学会大会国際シンポジウム
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 代謝による個体老化の臨界期制御2021

    • Author(s)
      三浦正幸
    • Organizer
      第64回日本神経化学会大会シンポジウム
    • Related Report
      2021 Research-status Report
    • Invited

URL: 

Published: 2021-07-13   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi