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A study on Purkinje cell-specific gene expression in SCA31 model mice

Research Project

Project/Area Number 21K07432
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52020:Neurology-related
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Ishikawa Kinya  東京医科歯科大学, 大学院医歯学総合研究科, 教授 (30313240)

Co-Investigator(Kenkyū-buntansha) 柳原 大  東京大学, 大学院総合文化研究科, 教授 (90252725)
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: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords脊髄小脳変性症 / 小脳 / 遺伝子 / RNA / 蛋白 / RNA / RNA結合蛋白 / RNA-seq / プルキンエ細胞 / 動物モデル
Outline of Research at the Start

脊髄小脳失調症31型(SCA31)の原因である5塩基繰り返し配列UGGAAリピートを過剰発現するBAC Transgenic マウスは、通常の歩行課題では68週齢で異常を示す。今後SCA31の病態に基づく治療法を見いだすためには、このモデルマウスで脳機能異常がいつ現れ、UGGAAリピートがどのようにその病態を起こすかを明らかにする必要がある。本研究では、小脳の重要な機能である運動学習と運動制御を検証しやすいsplit beltトレッドミル法を用いて脳機能異常の早期発見を目指し、TRAP法を用いてUGGAAリピートが、どのような分子を介してプルキンエ細胞で病態を起こすかを明らかにする。

Outline of Final Research Achievements

This study was conducted to elucidate how the penta-nucleotide TGGAA/TTCCA repeat leads to relatively selective Purkinje cell degeneration in human affected with spinocerebellar ataxia type 31 (SCA31). We found numerous abnormal RNA sequences when examined with RNA-seq, some of which appeared consistent with our prior knowledge regarding neuropathologic changes in SCA31. For example, splicing changes or cellular makers supported by Purkinje cell loss and gliosis in histologic specimens were documented in RNA-seq. As these differential expression profiles have not been described in SCA31, we are planning to publish these data in the near future.

Academic Significance and Societal Importance of the Research Achievements

本研究によりSCA31の病態について開始前よりも大幅に治験を増すことができた。学術的意義としては、脊髄小脳変性症の根本的な病態解明に関する研究が近年減少しているなかで、我が国において最も患者数が多いとも言われる本疾患の基礎的な病態解明についての課題を、解明できたことは意義が大きいと考えている。技術的な側面でも、最先端の次世代シークエンサーによるRNA-seq法を用いたことで初めて得られた成果であることも強調したい。社会的にも、我が国だけでさえ脊髄小脳変性症の患者は2万人の罹患者がいるため、大きな意義があると考えている。今回の成果は、SCA31のみならず類縁疾患に広く応用可能である。

Report

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

    (11 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (2 results) Journal Article (8 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 8 results,  Open Access: 6 results) Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Int'l Joint Research] IGBMC/France/Institute de genetique(フランス)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] IGBMC(フランス)

    • Related Report
      2022 Research-status Report
  • [Journal Article] Subcellular localization and ER-mediated cytotoxic function of α1A and α1ACT in spinocerebellar ataxia type 62024

    • Author(s)
      Wang Di、Honda Shinya、Shin Min Kyoung、Watase Kei、Mizusawa Hidehiro、Ishikawa Kinya、Shimizu Shigeomi
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 695 Pages: 149481-149481

    • DOI

      10.1016/j.bbrc.2024.149481

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Gait disorders induced by photothrombotic cerebellar stroke in mice.2023

    • Author(s)
      Inoue K, Asaka M, Lee S, Ishikawa K, Yanagihara D.
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 15805-15805

    • DOI

      10.1038/s41598-023-42817-4

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] FUS regulates RAN translation through modulating the G-quadruplex structure of GGGGCC repeat RNA in C9orf72-linked ALS/FTD2023

    • Author(s)
      Fujino Yuzo、Ueyama Morio、Ishiguro Taro、Ozawa Daisaku、Ito Hayato、Sugiki Toshihiko、Murata Asako、Ishiguro Akira et al.
    • Journal Title

      eLife

      Volume: 12 Pages: 1-31

    • DOI

      10.7554/elife.84338

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Spinocerebellar ataxia type 31 (SCA31).2023

    • Author(s)
      Ishikawa K.
    • Journal Title

      J Hum Genet

      Volume: 68(3) Issue: 3 Pages: 153-156

    • DOI

      10.1038/s10038-022-01091-4

    • NAID

      40019323170

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Spinocerebellar ataxia type 31: A clinical and radiological literature review.2023

    • Author(s)
      Saucier J, Al-Qadi M, Amor MB, Ishikawa K, Chamard-Witkowski L.
    • Journal Title

      J Neurol Sci.

      Volume: 444 Pages: 120527-120527

    • DOI

      10.1016/j.jns.2022.120527

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Thymidine kinase 2 and mitochondrial protein COX I in the cerebellum of patients with spinocerebellar ataxia type 31 caused by penta-nucleotide repeats (TTCCA) n.2022

    • Author(s)
      Aoki H, Higashi M, Okita M, Ando N, Murayama S, Ishikawa K*, Yokota T.
    • Journal Title

      Cerebellum.

      Volume: Jan 27 Issue: 1 Pages: 70-84

    • DOI

      10.1007/s12311-021-01364-2

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Insight into spinocerebellar ataxia type 31 (SCA31) from Drosophila model.2021

    • Author(s)
      Ishiguro T*, Nagai Y*, Ishikawa K*.
    • Journal Title

      Front Neurosci.

      Volume: 15 Pages: 648133-648133

    • DOI

      10.3389/fnins.2021.648133

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neuropathology of SCA34 showing widespread oligodendroglial pathology with vacuolar white matter degeneration: a case study2021

    • Author(s)
      Ozaki Kokoro、Irioka Takashi、Uchihara Toshiki、Yamada Akane、Nakamura Ayako、Majima Takamasa、Igarashi Susumu、Shintaku Hiroshi、Yakeishi Mayumi、Tsuura Yukio、Okazaki Yasushi、Ishikawa Kinya、Yokota Takanori
    • Journal Title

      Acta Neuropathologica Communications

      Volume: 9 Issue: 1 Pages: 172-172

    • DOI

      10.1186/s40478-021-01272-w

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] The expression analysis using RNA-seq on human cerebellar tissues.2023

    • Author(s)
      Kinya Ishikawa
    • Organizer
      The American Society of Human Genetics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research

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

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