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Profiling of modified nucleosides in mitochondrial tRNAs for diagnosis of mitochondrial diseases

Research Project

Project/Area Number 21K06865
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49010:Pathological biochemistry-related
Research InstitutionTohoku University

Principal Investigator

Akiyama Yasutoshi  東北大学, 薬学研究科, 助教 (70635557)

Co-Investigator(Kenkyū-buntansha) 豊原 敬文  東北大学, 大学病院, 准教授 (60594182)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsミトコンドリア病 / tRNA / MELAS / iPS細胞 / 修飾核酸 / LC-MS/MS / tRNAs
Outline of Research at the Start

ミトコンドリア病はいまだ根本的な治療法が存在しない難病である。ミトコンドリア病の病態の機序としてミトコンドリアのtRNAの修飾核酸の形成異常が示唆されているが、疾患毎の修飾核酸の変動や病態との関連はほとんど明らかになっていない。
本研究はミトコンドリアtRNA内に存在する15種類以上の修飾核酸を網羅的に定量する測定系を確立し、ミトコンドリア病の病型や異常ミトコンドリアの比率による修飾核酸変動のプロファイリングを行うことで、修飾核酸の変動パターンを用いたミトコンドリア病の新たな診断、重症度分類、治療効果判定法を確立することを目的とする。

Outline of Final Research Achievements

The objective of this study was to clarify the pathophysiology of mitochondrial diseases by comprehensive quantification of modified nucleosides in mitochondrial tRNAs. We established 1) the method to specifically purify mitochondrial tRNAs from total RNA, 2) the comprehensive quantification system for profiling the modified nucleosides in mitochondrial tRNAs, and 3) iPS cell clones derived from patients with mitochondrial diseases such as MELAS, all of which will be an important basis for the clinical application of our profiling method to patients with mitochondrial diseases.

Academic Significance and Societal Importance of the Research Achievements

ミトコンドリア病は未だ根本的な治療法が確立していない難病で、その病態に未解明な点が多いことも治療法の開発を妨げる要因の一つとなっている。本研究は、ミトコンドリア病の病態への関与が示唆されている、ミトコンドリアtRNAの修飾核酸を網羅的定量によりプロファイリングし、その情報をミトコンドリア病の病態解明に役立てようとするものである。ミトコンドリア病を、修飾核酸というこれまでにない新たな視点で評価するものであり、依然不明な点の多いミトコンドリア病の病態の理解に貢献することが期待される。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (11 results)

All 2023 2022 Other

All Int'l Joint Research (3 results) Journal Article (6 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (2 results)

  • [Int'l Joint Research] Brigham and Women's Hospital(米国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Brigham and Women's Hospital/Boston University(米国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Brigham & Women's Hospital/Boston University(米国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Oxidative Stress, Transfer RNA Metabolism, and Protein Synthesis2023

    • Author(s)
      Akiyama Yasutoshi、Ivanov Pavel
    • Journal Title

      Antioxidants & Redox Signaling

      Volume: - Issue: 10-12 Pages: 715-735

    • DOI

      10.1089/ars.2022.0206

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] tRNA‐derived RNAs: Biogenesis and roles in translational control2023

    • Author(s)
      Akiyama Yasutoshi、Ivanov Pavel
    • Journal Title

      WIREs RNA

      Volume: 14 Issue: 6

    • DOI

      10.1002/wrna.1805

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dual‐targeting therapy against HER3/MET in human colorectal cancers2023

    • Author(s)
      Yamasaki Akitaka、Miyake Rikuto、Hara Yuta、Okuno Hideki、Imaida Takuya、Okita Kouki、Okazaki Shogo、Akiyama Yasutoshi、Hirotani Kenji、Endo Yuichi、Masuko Kazue、Masuko Takashi、Tomioka Yoshihisa
    • Journal Title

      Cancer Medicine

      Volume: - Issue: 8 Pages: 9684-9696

    • DOI

      10.1002/cam4.5673

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] CD98 regulates the phosphorylation of HER2 and a bispecific anti‐HER2/CD98 antibody inhibits the growth signal of human breast cancer cells2023

    • Author(s)
      Yamasaki Akitaka、Maruyama‐Takahashi Kumiko、Nishida Kento、Okazaki Shogo、Okita Kouki、Akiyama Yasutoshi、Suzuki Hideaki、Endo Yuichi、Masuko Kazue、Masuko Takashi、Tomioka Yoshihisa
    • Journal Title

      Genes to Cells

      Volume: - Issue: 5 Pages: 374-382

    • DOI

      10.1111/gtc.13016

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] RTCB Complex Regulates Stress-Induced tRNA Cleavage2022

    • Author(s)
      Akiyama Yasutoshi、Takenaka Yoshika、Kasahara Tomoko、Abe Takaaki、Tomioka Yoshihisa、Ivanov Pavel
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 23 Issue: 21 Pages: 13100-13100

    • DOI

      10.3390/ijms232113100

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Selective Cleavage at CCA Ends and Anticodon Loops of tRNAs by Stress-Induced RNases2022

    • Author(s)
      Akiyama Yasutoshi、Lyons Shawn M.、Fay Marta M.、Tomioka Yoshihisa、Abe Takaaki、Anderson Paul J.、Ivanov Pavel
    • Journal Title

      Frontiers in Molecular Biosciences

      Volume: 9

    • DOI

      10.3389/fmolb.2022.791094

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Cytoplasmic processing of human transfer RNAs2022

    • Author(s)
      秋山泰利、阿部高明、富岡佳久、Pavel Ivanov
    • Organizer
      第23回日本RNA学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] RTCB ligase complex regulates stress-induced tRNA cleavage2022

    • Author(s)
      竹中慶香、秋山泰利、松本洋太郎、富岡佳久
    • Organizer
      第23回日本RNA学会年会
    • Related Report
      2022 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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