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The Search for new therapeutic approaches for demyelination diseases based on the elucidation of the remyelination-promoting mechanism by LDM/CYP51

Research Project

Project/Area Number 19K16623
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 49030:Experimental pathology-related
Research InstitutionTokushima Bunri University

Principal Investigator

Nakashima Kentaro  徳島文理大学, 神経科学研究所, 助教 (20449911)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords多発性硬化症 / 脱髄 / 髄鞘再生 / Cuprizone / LDM / CYP51 / Lanosterol / コレステロール / オリゴデンドロサイト / 脱髄性疾患 / Multiple sclerosis / Demyelination / Remyelination
Outline of Research at the Start

全世界の罹患者が約250万人といわれる多発性硬化症は、自己免疫的機序によって神経線維を覆う髄鞘が脱落する炎症性脱髄疾患と考えられている。この神経難病の克服には、病態の基礎を成す炎症反応の制御だけでなく、髄鞘再生を促進する治療アプローチの併用が鍵と考えられる。その際、髄鞘再生に必須の脳内コレステロールの代謝制御機構の解明が非常に重要な課題となる。
本研究では、その制御機構に関与する酵素LDM(ラノステロール脱メチル化酵素)に着目し、髄鞘再生機構の新たな基礎的知見の集積により、自己免疫反応の制御とは異なる、髄鞘再生促進という観点から多発性硬化症の新たな治療ターゲットを見出すことを目指している。

Outline of Final Research Achievements

Analyses using a cuprizone-induced demyelination mouse model show increased expression of SREBP2, a key regulator of cholesterol metabolism, and cholesterol metabolism-related molecules regulated by SREBP2 in astrocytes that invade into the demyelinated lesion in remyelination phase following the invasion of microglia. These results suggest that cholesterol, a major component of myelin sheaths, is mainly supplied by astrocytes during remyelination rather than oligodendrocytes, which form the myelin sheath. Therefore, the modulation of cholesterol metabolism in astrocytes during remyelination may provide a new therapeutic approach based on the promotion of remyelination for demyelination diseases.

Academic Significance and Societal Importance of the Research Achievements

多発性硬化症は、自己免疫的機序によって発症する炎症性脱髄疾患と考えられており、現在の治療薬は全て髄鞘に対する自己免疫反応の抑制に基づくものである。本研究で明らかとなったアストロサイトのコレステロール代謝制御による髄鞘再生促進についての基礎的知見は、従来とは異なるコンセプトでの脱髄性疾患治療法の開発に道を開くものである。オリゴデンドロサイトでのLDM/CYP51の機能的役割やアストロサイトを介した髄鞘再生促進の機序解明はこれからの課題であるが、活性化ミクログリアや反応性アストロサイトとの協調的なコレステロール代謝制御による髄鞘再生促進という観点は、脱髄疾患の新たな治療基盤になると期待される。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2022 2021 2020

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (9 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Overcoming off-targets: assessing Western blot signals for Bcnt/Cfdp1, a tentative component of the chromatin remodeling complex.2020

    • Author(s)
      1.Iwashita S, Suzuki T, Kiriyama Y, Dohmae N, Ohoka Y, Song SY, Nakashima K.
    • Journal Title

      Biosci Rep

      Volume: 40(6) Issue: 6 Pages: 1-16

    • DOI

      10.1042/bsr20194012

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Immunohistochemical analyses for molecules relating to schizophrenia in short-term treated mice by cuprizone with impairment of prepulse inhibition.2022

    • Author(s)
      Kyoka Tsukuda, Takashi Kubota, Aoi Chiba, Takashi Tominaga, Yasushi Kishimoto, Kentaro Nakashima
    • Organizer
      The 45th Annual Meeting of the Japan Neuroscience Society
    • Related Report
      2022 Annual Research Report
  • [Presentation] Behavioral disorders and expression changes of the tyrosine hydroxylase in Cuprizone-induced neuroinflammation mouse model with schizophrenia-like symptoms.2022

    • Author(s)
      Kyoka Tsukuda, Takashi Kubota, Aoi Chiba, Takashi Tominaga, Yasushi Kishimoto, Kentaro Nakashima
    • Organizer
      Society for Neuroscience, 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A Cuprizone-induced neuroinflammation mouse model with prepulse inhibition deficit exhibited a complementary tyrosine hydroxylase abundance ratio in the prefrontal cortex and midbrain.2022

    • Author(s)
      Kyoka Tsukuda, Takashi Kubota, Aoi Chiba, Yasushi Kishimoto, Kentaro Nakashima, Takashi Tominaga
    • Organizer
      The 45th Annual Meeting of the Molecular Biology Society of Japan
    • Related Report
      2022 Annual Research Report
  • [Presentation] Remyelination following demyelination induced by cuprizone is accelerated by oligodendrocyte-specific up-regulation of Lanosterol 14 alpha-demethylase (LDM, CYP51).2022

    • Author(s)
      Kentaro Nakashima, Kyoka Tsukuda, Raimu Kohara, Hikaru Fukui, Maho Saito, Ryoma kawada, Si-Young Song
    • Organizer
      The 45th Annual Meeting of the Molecular Biology Society of Japan
    • Related Report
      2022 Annual Research Report
  • [Presentation] Highly expression of Lanosterol 14 alpha-demethylase (LDM, CYP51) in oligodendrocyte enhances remyelination following demyelination induced by cuprizone2021

    • Author(s)
      Kentaro Nakashima, Kyoka Tsukuda, Raimu Kohara, Hikaru Fukui, Maho Saito, Chisato Takahashi, Ryoma Kawada, Si-Young Song
    • Organizer
      The 44th Annual Meeting of the Molecular Biology Society of Japan
    • Related Report
      2021 Research-status Report
  • [Presentation] A mouse model of acute neuroinflammation induced by short-term exposure to Cuprizone show phychobehavioral disorders similar to schizophrenia2021

    • Author(s)
      Kyoka Tsukuda, Takashi Kubota, Aoi Chiba, Yasushi Kishimoto, Kentaro Nakashima
    • Organizer
      The 44th Annual Meeting of the Japan Neuroscience Society
    • Related Report
      2021 Research-status Report
  • [Presentation] Acute neuroinflammation induced by short-term treatment with Cuprizone leads to behavioral disorders similar to schizophrenia2021

    • Author(s)
      Kyoka Tsukuda, Takashi Kubota, Aoi Chiba, Takashi Tominaga, Yasushi Kishimoto, Kentaro Nakashima
    • Organizer
      The 80th Fujihara seminar
    • Related Report
      2021 Research-status Report
  • [Presentation] A mouse model of neuroinflammation induced by short-term exposure to Cuprizone show behavioral symptoms similar to schizophrenia2021

    • Author(s)
      Kyoka Tsukuda, Takashi Kubota, Aoi Chiba, Takashi Tominaga, Yasushi Kishimoto, Kentaro Nakashima
    • Organizer
      The 12th Annual Meeting of the Biophysical Society of Japan -Chugoku/shikoku branch-
    • Related Report
      2021 Research-status Report
  • [Presentation] N-terminus variants of Bcnt / Cfdp1, a transient chromatin remodeler: DEF / Y motif core that is adjacent to the CK2 phosphorylation sites.2020

    • Author(s)
      Shintaro Iwashita, Takehiro Suzuki, Yuki Uezato, Yasunori Sugiyama, Naoshi Dohmae, Yoshiharu Ohoka, Si-Young Song, Kentaro Nakashima
    • Organizer
      日本生化学会
    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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