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Elucidation of the mechanism of small caliber axons' myelination in the central nervous system and its application

Research Project

Project/Area Number 20K07756
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 51030:Pathophysiologic neuroscience-related
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Suzuki Nobuharu  東京医科歯科大学, 大学院医歯学総合研究科, 准教授 (30596565)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords髄鞘 / オリゴデンドロサイト
Outline of Research at the Start

中枢神経系ではオリゴデンドロサイトによって大小様々な神経軸索が髄鞘化されている。その軸索径に応じて髄鞘を形成するオリゴデンドロサイトのサブタイプが異なることが知られており、さらに脱髄疾患や髄鞘タンパク質遺伝子の変異による疾患では、小径軸索がより脆弱であることが分かっている。本研究では、小径軸索の髄鞘形成に必須の膜貫通型タンパク質 Teneurin-4(Ten-4)に着目して、オリゴデンドロサイトのサブタイプによる小径軸索髄鞘化のメカニズムを解明し、活性化制御分子を同定する。さらに、その機序に基づいて関連疾患モデルにおける初期応用実験を試み、治療薬開発の可能性を検討する。

Outline of Final Research Achievements

In the central nervous system, there are various sizes of axons that are myelinated and small-diameter axons are more vulnerable for demyelinating pathology and neuronal activity-dependent myelination. In addition, small-diameter axons are myelinated by type I and II oligodendrocytes. However, these mechanisms have not been elucidated yet. In this study, we analyzed teneurin-4 (Ten-4) deficient mice, which exhibited the myelination defect in small-diameter axons, and demonstrated that 1) Ten-4 is essential for development and differentiation of type I and II oligodendrocytes, and 2) Ten-4 plays a crucial role in cell adhesion and cytoskeletal organization for the myelination.

Academic Significance and Societal Importance of the Research Achievements

これまで多くの髄鞘関連の研究において、オリゴデンドロサイトは単一種として扱われ、髄鞘化される軸索径も大小について詳細に解析される例は少なかった。一方で、関連疾患や神経活動依存的な髄鞘形成において、小径軸索がより感受性が高いことが示されており、その髄鞘化は特異的なオリゴデンドロサイトsubpopulationによってなされている。本研究ではこれらの機序の一端を証明するに至り、関連疾患の治療やQOL向上等を目指した応用研究において、より特異的且つ効果的な改善法の開発の可能性が期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (27 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (3 results) Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (20 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Int'l Joint Research] ミュンヘン技術大学神経細胞研究所(ドイツ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] TUM-NCB/DZNE(ドイツ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] TUM-NCB/DZNE(ドイツ)

    • Related Report
      2020 Research-status Report
  • [Journal Article] The molecular regulation of oligodendrocyte development and CNS myelination by ECM proteins2022

    • Author(s)
      Yamada Momona、Iwase Miho、Sasaki Binri、Suzuki Nobuharu
    • Journal Title

      Frontiers in Cell and Developmental Biology

      Volume: 10 Pages: 952135-952135

    • DOI

      10.3389/fcell.2022.952135

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The regulation of axon homeostasis by myelin: From studies with genetically engineered mice2021

    • Author(s)
      Chikako Hayashi、Miho Iwase、Momona Yamada、Suzuki Nobuharu
    • Journal Title

      BIO Clinica

      Volume: 36 Pages: 353-357

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Development of type I/II oligodendrocytes regulated by teneurin-4 in the murine spinal cord2020

    • Author(s)
      Hayashi Chikako、Suzuki Nobuharu、Takahashi Riko、Akazawa Chihiro
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 8611-8611

    • DOI

      10.1038/s41598-020-65485-0

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The mechanism of axon maintenance by myelin in the central nervous system2020

    • Author(s)
      Suzuki Nobuharu、Miho Iwase、Momona Yamada
    • Journal Title

      BIO Clinica

      Volume: 9 Pages: 103-109

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] オリゴデンドロサイトの発生・分化におけるECMタンパク質の機能解析2023

    • Author(s)
      鈴木喜晴、山田桃奈、佐々木敏莉、Susana de Vega
    • Organizer
      第7回日本ミエリン研究会発表会 横浜ランドマーク(神奈川県横浜市)
    • Related Report
      2022 Annual Research Report
  • [Presentation] The Maintenance of Small Caliber Axons in Teneurin-4 Deficient Mice with the Congenital Hypomyelination in the CNS.2022

    • Author(s)
      Nobuharu Suzuki, Riko Takahashi, Hinako Saito, Yukina Hosoda, Chikako Hayashi.
    • Organizer
      第65回日本神経化学会大会 沖縄コンベンションセンター(沖縄県宜野湾市)
    • Related Report
      2022 Annual Research Report
  • [Presentation] The molecular function of the actin cytoskeletal regulator Arpc1a in proliferation and morphogenesis of oligodendrocyte-lineage cells.2022

    • Author(s)
      Miho Iwase, Momona Yamada, Chikako Hayashi, Nobuharu Suzuki.
    • Organizer
      第65回日本神経化学会大会 沖縄コンベンションセンター(沖縄県宜野湾市)
    • Related Report
      2022 Annual Research Report
  • [Presentation] Fibulin-7, an extracellular matrix protein, positively regulates oligodendrocyte differentiation and attachment to neuronal axons.2022

    • Author(s)
      Momona Yamada, Miho Iwase, Chikako Hayashi, Susana de Vega, Nobuharu Suzuki.
    • Organizer
      第65回日本神経化学会大会 沖縄コンベンションセンター(沖縄県宜野湾市)
    • Related Report
      2022 Annual Research Report
  • [Presentation] The extracellular matrix protein fibulin-7 positively regulates oligodendrocyte differentiation through the interaction between myelin and neuronal axons.2022

    • Author(s)
      Momona Yamada, Miho Iwase, Chikako Hayashi, Susana de Vega, Nobuharu Suzuki.
    • Organizer
      Neuroscience 2022 San Diego Convention Center, San Diego, CA, USA
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Teneurin-4 forms a molecular complex with actin-regulating proteins in oligodendrocytes and promotes myelin sheath formation in the CNS.2022

    • Author(s)
      Miho Iwase, Chikako Hayashi, Binri Sasaki, Momona Yamada, Nobuharu Suzuki.
    • Organizer
      Neuroscience 2022 San Diego Convention Center, San Diego, CA, USA
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Teneurin-4 promotes CNS myelin formation through a molecular interaction with actin-regulating proteins in oligodendrocytes.2022

    • Author(s)
      Miho Iwase, Chikako Hayashi, Binri Sasaki, Momona Yamada, Nobuharu Suzuki.
    • Organizer
      第45回日本分子生物学会年会 幕張メッセ(千葉県幕張市)
    • Related Report
      2022 Annual Research Report
  • [Presentation] An extracellular matrix protein Fibulin-7 positively regulates oligodendrocyte differentiation through the N-terminal active sequence.2022

    • Author(s)
      Momona Yamada, Miho Iwase, Chikako Hayashi, de Vega Susana, Nobuharu Suzuki.
    • Organizer
      第45回日本分子生物学会年会 幕張メッセ(千葉県幕張市)
    • Related Report
      2022 Annual Research Report
  • [Presentation] 特異的オリゴデンドロサイトsubpopulationによる軸索径依存的な髄鞘形成2022

    • Author(s)
      鈴木喜晴、岩瀬未帆、山田桃奈
    • Organizer
      第6回日本ミエリン研究会発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] The maintenance of small diameter axons after myelination defect in the CNS2021

    • Author(s)
      Riko Takahashi, Hinako Saito, Yukina Hosoda, Chikako Hayashi, Nobuharu Suzuki
    • Organizer
      第64回日本神経化学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] The expression pattern and functional analysis of Arpc1a controlling actin cytoskeleton at the initial stage of myelination2021

    • Author(s)
      Miho Iwase, Momona Yamada, Chikako Hayashi, Nobuharu Suzuki
    • Organizer
      第64回日本神経化学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] The extracellular matrix protein fibulin-7 regulates cellular interaction for CNS myelination2021

    • Author(s)
      Momona Yamada, Miho Iwase, Chikako Hayashi, de Vega Susana, Nobuharu Suzuki
    • Organizer
      第64回日本神経化学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] The maintenance of unmyelinated small diameter axons in the CNS2021

    • Author(s)
      Riko Takahashi, Hinako Saito, Yukina Hosoda, Chikako Hayashi, Nobuharu Suzuki
    • Organizer
      第44回日本神経化学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] The extracellular matrix protein Fibulin-7 relates to the cell interaction for myelination in CNS2021

    • Author(s)
      Momona Yamada, Miho Iwase, Chikako Hayashi, de Vega Susana, Nobuharu Suzuki
    • Organizer
      第44回日本神経化学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Teneurin-4 positively regulates oligodendrocyte-axon adhesion and myelination through the binding with teneurins2020

    • Author(s)
      Chikako Hayashi, Yukina Hosoda, Chinami Onchi, Nobuharu Suzuki
    • Organizer
      12th FENS Forum of Neuroscience
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Cell Adhesion Proteins Regulate Myelination of Small Caliber Axons Critically Involved in Myelin-related Diseases2020

    • Author(s)
      Nobuharu Suzuki
    • Organizer
      第63回日本神経化学会大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Oligodendrocyte-axon Adhesion via Teneurin-4-Teneurin Binding Promotes Myelination2020

    • Author(s)
      Chikako Hayashi, Riko Takahashi, Miho Iwase, Nobuharu Suzuki
    • Organizer
      第63回日本神経化学会大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Teneurin-4 regukates the generation of type I/II oligodendrocytes that myelinate small diameter axons2020

    • Author(s)
      Riko Takahashi, Chikako Hayashi, Miho Iwase, Nobuharu Suzuki
    • Organizer
      第63回日本神経化学会大会
    • Related Report
      2020 Research-status Report
  • [Presentation] The crucial role of teneurin-4 associated with actin binding protein CNP in myelination and axonal maintenance2020

    • Author(s)
      Yuki Munakata, Yukina Hosoda, Hiromi Kurumada, Chikako Hayashi, Nobuharu Suzuki
    • Organizer
      第63回日本神経化学会大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Promoted oligodendrocyte precursor cell proliferation and surivival via laminin E3 fragments2020

    • Author(s)
      Momo Ooishi, Chinami Onchi, Momona Yamada, Chikako Hayashi, Nobuharu Suzuki
    • Organizer
      第63回日本神経化学会大会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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