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Elucidation of the pathogenic mechanism of congenital contracture disorder with ECEL1/DINE deficiency

Research Project

Project/Area Number 18K15379
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 51030:Pathophysiologic neuroscience-related
Research InstitutionNagoya University (2020)
Osaka University (2018-2019)

Principal Investigator

Nagata Kenichi  名古屋大学, 医学系研究科, 特任助教 (50587798)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
KeywordsECEL1/DINE / 先天性関節拘縮症 / 運動神経 / 軸索分岐 / ゲノム編集技術 / ノックインマウス / 神経損傷 / RNA-seq / シングルセルRNA-seq / コンディショナルノックアウトマウス / DINE / ECEL1
Outline of Final Research Achievements

Using genome editing technology, we established two distinct knock-in mouse lines with ECEL1/DINE pathogenic mutations (C760R or G607S). These knock-in mice showed developmental abnormalities in the motor nerves throughout the body. Histological and biochemical analyses revealed distinct functional consequences of these pathogenic mutations: C760R knock-in mice exhibit abnormal localization of ECEL1/DINE protein, whereas G607S mice showed splicing defects of ECEL1/DINE mRNA. We also generated flox mouse lines with two loxP sites in ECEL1/DINE gene locus to further explore the function of ECEL1/DINE in adult stages.

Academic Significance and Societal Importance of the Research Achievements

本研究では患者で同定された病的変異をもつノックインマウスを複数作製し、これらのノックインマウスで運動神経の発達異常が生じることを明らかにした。得られた知見はECEL1/DINE変異による先天性関節拘縮症がどのようにして発症するかを理解する上で重要であり、治療法の開発やリハビリテーションの手法への発展性が期待できる。また、floxマウスの作製により成体期のECEL1/DINEの機能を探索することが可能になった。今後、多様なCreマウスと交配し表現型を解析することで、先天性関節拘縮症の発症機序のみならず、神経系の恒常性維持、損傷後の再生過程についても有意義な知見を提供できる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (4 results)

All 2020 2019 2018

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (3 results)

  • [Journal Article] New Insights of a Neuronal Peptidase DINE/ECEL1: Nerve Development, Nerve Regeneration and Neurogenic Pathogenesis2018

    • Author(s)
      Kiryu-Seo Sumiko、Nagata Kenichi、Saido Takaomi C.、Kiyama Hiroshi
    • Journal Title

      Neurochemical Research

      Volume: - Issue: 6 Pages: 1279-1288

    • DOI

      10.1007/s11064-018-2665-x

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 点変異ノックインマウスの作出による疾患発症機序の探索2020

    • Author(s)
      永田健一
    • Organizer
      第125回日本解剖学会総会・全国学術集会(誌上開催)
    • Related Report
      2019 Research-status Report
  • [Presentation] ECEL1/DINE遺伝子におけるミスセンス変異の in vivo機能解析2019

    • Author(s)
      永田 健一、木山 博資、西道 隆臣
    • Organizer
      第124回日本解剖学会総会・全国学術集会
    • Related Report
      2018 Research-status Report
  • [Presentation] Conditional targeting of DINE using CRISPR/Cas9 technology in mice2018

    • Author(s)
      Kenichi Nagata, Mika Takahashi, and Takaomi C. Saido
    • Organizer
      第123回日本解剖学会総会・全国学術集会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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