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Elucidation of the molecular basis of novel ribitol phosphate modifications and their application to the development of treatments for muscular dystrophy

Research Project

Project/Area Number 21H02685
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 48040:Medical biochemistry-related
Research InstitutionEhime University

Principal Investigator

Kanagawa Motoi  愛媛大学, 医学系研究科, 教授 (00448044)

Co-Investigator(Kenkyū-buntansha) 萬谷 博  地方独立行政法人東京都健康長寿医療センター(東京都健康長寿医療センター研究所), 東京都健康長寿医療センター研究所, 研究部長 (20321870)
永森 收志  東京慈恵会医科大学, 医学部, 教授 (90467572)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2023: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2022: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2021: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Keywords筋ジストロフィー / 糖鎖 / リビトール / ジストログリカン
Outline of Research at the Start

新規の翻訳後修飾体であるリビトールリン酸は、筋や神経組織で重要な役割を担っており、その異常は筋ジストロフィーや滑脳症などの原因になる。リビトールリン酸修飾に関わる酵素は明らかになってきた一方で、修飾が正常に進行する仕組みについて不明な点は多く、また、リビトールリン酸異常症の有効な治療法は存在しない。本研究では、リビトールリン酸修飾の分子基盤を明らかにし、リビトールリン酸異常症の治療法の開発を行う。

Outline of Final Research Achievements

Ribitol phosphate, a novel post-translational moiety, plays important roles in skeletal muscle and nerve tissues, and its abnormalities lead to muscular dystrophy and lissencephaly. The biosynthetic pathway of CDP-ribitol, a precursor required for ribitol phosphate modification, and the detailed mechanism of ribitol phosphate modification are unknown, and there is no effective treatment for ribitol phosphate-defective diseases. In this study, we elucidated the biosynthetic mechanism of CDP-ribitol and proposed an enzyme product supplementation therapy based on the pathogenesis.

Academic Significance and Societal Importance of the Research Achievements

リビトールリン酸修飾の分子機構に不明な点は多く、また、リビトールリン酸異常症に有効な治療法は存在しない。本研究では、リビトールリン酸修飾に重要なCDP-リビトールの合成経路が明らかになり、発症メカニズムに基づいた治療戦略の提唱にも至った。これらの成果は、疾患機序の解明や治療法の開発につながり、学術的・社会的にも大きな貢献を果たした。

Report

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

    (11 results)

All 2023 2022 Other

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (5 results) (of which Int'l Joint Research: 2 results,  Invited: 5 results) Remarks (2 results)

  • [Journal Article] Endogenous reductase activities for the generation of ribitol-phosphate, a CDP-ribitol precursor, in mammals2023

    • Author(s)
      Hoshino Shunsuke、Manya Hiroshi、Imae Rieko、Kobayashi Kazuhiro、Kanagawa Motoi、Endo Tamao
    • Journal Title

      The Journal of Biochemistry

      Volume: 175 Issue: 4 Pages: 418-425

    • DOI

      10.1093/jb/mvad115

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chain-specificity of laminin α1-5 LG45 modules in the recognition of carbohydrate-linked receptors and intramolecular binding2023

    • Author(s)
      Matsunuma Masumi、Kan Ryuji、Yamada Yuji、Hamada Keisuke、Kanagawa Motoi、Nomizu Motoyoshi、Kikkawa Yamato
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 10430-10430

    • DOI

      10.1038/s41598-023-37533-y

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Laminin α5_CD239_Spectrin is a candidate association that compensates the linkage between the basement membrane and cytoskeleton in skeletal muscle fibers2022

    • Author(s)
      Kikkawa Yamato、Matsunuma Masumi、Kan Ryuji、Yamada Yuji、Hamada Keisuke、Nomizu Motoyoshi、Negishi Yoichi、Nagamori Shushi、Toda Tatsushi、Tanaka Minoru、Kanagawa Motoi
    • Journal Title

      Matrix Biology Plus

      Volume: 15 Pages: 100118-100118

    • DOI

      10.1016/j.mbplus.2022.100118

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] CDP-ribitol prodrug treatment ameliorates ISPD-deficient muscular dystrophy mouse model2022

    • Author(s)
      Tokuoka Hideki、Imae Rieko、Nakashima Hitomi、Manya Hiroshi、Masuda Chiaki、Hoshino Shunsuke、Kobayashi Kazuhiro、Lefeber Dirk J.、Matsumoto Riki、Okada Takashi、Endo Tamao、Kanagawa Motoi、Toda Tatsushi
    • Journal Title

      Nature Communications

      Volume: 13 Issue: 1 Pages: 1847-1847

    • DOI

      10.1038/s41467-022-29473-4

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Ribitol-phosphate modification and muscular dystrophy2023

    • Author(s)
      金川 基
    • Organizer
      第96回日本生化学会大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] CDP-ribitol supplementation therapy and pathomechanism of dystroglycanopathy-related cardiomyopathy2023

    • Author(s)
      Motoi Kanagawa
    • Organizer
      7th International Workshop for Glycosylation Defects in Muscular Dystrophies
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Pathogenesis and therapeutic strategy for dystroglycanopathy2023

    • Author(s)
      Motoi Kanagawa
    • Organizer
      1st Symposium on "Skeletal muscle cells in Growth and Disease"
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 糖鎖異常型筋ジストロフィーの発症機序にもとづいたCDP-リビトール補充療法の開発2022

    • Author(s)
      金川 基
    • Organizer
      第45回日本分子生物学会
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Invited
  • [Presentation] リビトールリン酸という新規糖鎖ユニットの発見と疾患2022

    • Author(s)
      金川 基
    • Organizer
      第95回日本生化学会大会
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Invited
  • [Remarks] 愛媛大学大学院医学系研究科医化学・細胞生物学講座

    • URL

      https://www.m.ehime-u.ac.jp/school/biochem1/

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
  • [Remarks] 愛媛大学大学院医学系研究科医化学・細胞生物学講座

    • URL

      https://www.m.ehime-u.ac.jp/school/biochem1

    • Related Report
      2021 Annual Research Report

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

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