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Pathophysiological analysis of repeat disease causing neurodegenerative disease using human brain organoids.

Research Project

Project/Area Number 19K07978
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

Kiriyama Takao  奈良県立医科大学, 医学部, 講師 (80571025)

Co-Investigator(Kenkyū-buntansha) 杉江 和馬  奈良県立医科大学, 医学部, 教授 (60347549)
松井 健  島根大学, 学術研究院医学・看護学系, 特任講師 (90528605)
七浦 仁紀  奈良県立医科大学, 医学部, 助教 (00827909)
塩田 智  奈良県立医科大学, 医学部附属病院, 研究員 (70837062)
井口 直彦  奈良県立医科大学, 医学部附属病院, 研究員 (50838232)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords神経変性疾患 / 非翻訳領域リピート病 / 筋萎縮性側索硬化症 / 脳オルガノイド / FUS / C9orf72 / RAN translation / ALS / 核内封入体病 / DNA修復 / 脳幹オルガノイド / 脊髄小脳変性症 / ポリペプチド / laser micro-irradiation / オルガノイド / リピート病 / RAN翻訳
Outline of Research at the Start

本研究では筋萎縮性側索硬化症(ALS)や脊髄小脳変性症(SCD)などの神経疾患の一部が遺伝子のイントロン領域や非翻訳領域の繰り返し配列の伸長により発症すること注目し、これらの疾患の発症メカニズムを解明する。家族性ALSの原因となるC9orf72遺伝子や、小脳失調症状とALS様症状を起こすSCD36型(SCA36)の原因となるNOP56遺伝子はイントロン領域に6塩基の繰り返し配列の伸長が存在する。繰り返し配列の伸長を持つSCA36のiPS細胞から、ヒト脳の構造を試験管内で再現するヒト脳オルガノイドを作製し、ALSやSCDなどイントロン領域に異常をきたす遺伝性神経疾患に共通する病態を明らかにする。

Outline of Final Research Achievements

The pathogenesis of neurodegenerative diseases associated with non-coding repeat expansion remains unclear. In this study, we generated brainstem organoids from human pluripotent stem cells that can be used in disease models and elucidated their characteristics and gene expression responses under stress. We also investigated and visualized the function of FUS, the causative gene of ALS, as a DNA repair protein. we also showed that polypeptides produced from non-coding repeat expansion of C9orf72 disrupt the phase separation regulatory ability of Kapβ2, a nuclear transport receptor. In addition, we found that polypeptides bind to intermediate filaments and enhance cell stiffness, inhibit cell detachment, and exacerbate the mechanical stress response.

Academic Significance and Societal Importance of the Research Achievements

本研究の結果から、非翻訳領域リピート病において毒性ポリペプチドが細胞機能障害を起こす病態メカニズムの一部が明らかとなった。また独自のプロトコールによる脳幹オルガノイドの特性を明らかにした。今後のオルガノイドの神経変性疾患モデルとして利用や、さらなる病態解明、治療法の開発へも寄与することが期待される。

Report

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

    (5 results)

All 2022 2021 2020 2019

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

  • [Journal Article] C9orf72-Derived Proline:Arginine Poly-Dipeptides Modulate Cytoskeleton and Mechanical Stress Response2022

    • Author(s)
      Shiota Tomo、Nagata Riko、Kikuchi Sotaro、Nanaura Hitoki、Matsubayashi Masaya、Nakanishi Mari、Kobashigawa Shinko、Isozumi Noriyoshi、Kiriyama Takao、Nagayama Kazuaki、Sugie Kazuma、Yamashiro Yoshito、Mori Eiichiro
    • Journal Title

      Frontiers in Cell and Developmental Biology

      Volume: 10 Pages: 750829-750829

    • DOI

      10.3389/fcell.2022.750829

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] C9orf72-derived arginine-rich poly-dipeptides impede phase modifiers2021

    • Author(s)
      Nanaura Hitoki、Aiba Yuichiro、Nakanishi Mari、Shiota Tomo、Hibino Masaki、Kikuchi Sotaro、Nagata Riko、Morikawa Naritaka、Iguchi Naohiko、Kiriyama Takao、Nagamori Shushi、Sugie Kazuma、Saio Tomohide、Yoshizawa Takuya、Mori Eiichiro et al.
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 5301-5301

    • DOI

      10.1038/s41467-021-25560-0

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Gene expression profiles of human cerebral organoids identify PPAR pathway and PKM2 as key markers for oxygen-glucose deprivation and reoxygenation2021

    • Author(s)
      Naoki Iwasa, Takeshi K. Matsui, Naohiko Iguchi, Kaoru Kinugawa, Naritaka Morikawa, Yoshihiko M. Sakaguchi, Tomo Shiota, Shinko Kobashigawa et. al.
    • Journal Title

      Frontiers in Cellular Neuroscience

      Volume: - Pages: 605030-605030

    • DOI

      10.3389/fncel.2021.605030

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Brainstem organoids from human pluripotent stem cells2020

    • Author(s)
      Nobuyuki Eura, Takeshi K. Matsui, Joachim Luginbuhl, Masaya Matsubayashi, Hitoki Nanaura, Tomo Shiota, Kaoru Kinugawa, Naohiko Iguchi, Takao Kiriyama, Canbin Zheng, Tsukasa Kouno, Yan Jun Lan, Pornparn Kongpracha, Pattama Wiriyasermkul, Yoshihiko M. Sakaguchi, Riko Nagata, Tomoya Komeda, Naritaka Morikawa, et al.
    • Journal Title

      Frontiers in Neuroscience

      Volume: - Pages: 00538-00538

    • DOI

      10.3389/fnins.2020.00538

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 脊髄性筋萎縮症 III型患者のヌシネルセン治療における多種項目による治療効果判定2019

    • Author(s)
      桐山敬生、井口直彦、江浦信之、杉江和馬  奈良県立医科大学 脳神経内科学
    • Organizer
      第37回神経治療学会学術集会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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