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Identification of molecular mechanism in a novel congenital malformation syndrome caused by retriever dysfunction.

Research Project

Project/Area Number 19K23823
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0802:Biomedical structure and function and related fields
Research InstitutionNagoya City University (2023)
Nagoya University (2019-2022)

Principal Investigator

Kato Kohji  名古屋市立大学, 医薬学総合研究院(医学), 助教 (40844056)

Project Period (FY) 2019-08-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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)
Keywords3C症候群 / エンドソームリサイクル / 脂質異常症 / VPS35L / レトリーバー複合体 / エンドソーム / 筋肉 / 骨形成異常 / 3C症候群 / 水頭症 / Prx1-Cre / Nestin-Cre / リサイクル機能 / 先天異常症候群
Outline of Research at the Start

我々は新規の疾患原因遺伝子としてVPS35Lを同定した。VPS35Lはレトリーバー複合体を形成し、エンドソームにおける細胞膜蛋白質の選択的リサイクル機能を担う。このリサイクル機構は多くの細胞膜蛋白質の発現量維持に寄与しているが、疾患との関連については従来報告がなかった。我々が作成したVps35lのノックアウトマウスが胎生早期に致死であることと、患者の多様な形成異常を考えると、VPS35Lは個体発生に重要な役割を果たしていることが示唆される。本研究では、マウスモデルを用いてレトリーバー複合体が個体発生に果たす役割を解明すると同時に、その機能障害が先天異常症候群を引き起こすメカニズムを解明する。

Outline of Final Research Achievements

We reported VPS35L as a novel causative gene for Ritcher-Schinzel syndrome (also known as 3C syndrome) and established the disease concept by accumulating cases through international collaborative research. The accumulation of patients revealed a diverse range of complications. Therefore, we established VPS35L-deficient cells to investigate the molecular mechanisms of patient phenotypes, and particularly elucidated that changes in the expression of LRP1 and LDLR are responsible for lipid abnormalities. Additionally, to examine various phenotypes observed in patients at the individual level, we established VPS35L-deficient mice for the first time in the world and demonstrated that it is embryonic lethal. Furthermore, we generated organ-specific knockout mice and established analysis systems for each tissue.

Academic Significance and Societal Importance of the Research Achievements

本研究成果の学術的意義としては、新規の疾患概念を確立したことにあります。これにより、従来原因が不明であった先天異常症候群の患者さんの診断が可能となり、同一の診断を有する患者さんを集積していくことで、疾患の理解を深め、定期的なフォローアップに役立てることが可能です。また、その疾患の病態を解明し、将来的な治療法や介入方法を検討していくことで、患者さんに対してより良い医療を提供できる可能性があります。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (11 results)

All 2023 2022 2021 2020 2019

All Journal Article (6 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (5 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Structure of the endosomal Commander complex linked to Ritscher-Schinzel syndrome2023

    • Author(s)
      Healy Michael D.、McNally Kerrie E.、Butkovi Rebeka、Chilton Molly、Kato Kohji、Derivery Emmanuel、Collins Brett M.、Cullen Peter J, et al.
    • Journal Title

      Cell

      Volume: 186 Issue: 10 Pages: 2219-2237

    • DOI

      10.1016/j.cell.2023.04.003

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Clinical diversity and molecular mechanism of VPS35L-associated Ritscher-Schinzel syndrome2022

    • Author(s)
      Otsuji Shiomi、Nishio Yosuke、Tsujita Maki、Rio Marlene、Huber Celine、Anton-Plagaro Carlos、Mizuno Seiji、Kawano Yoshihiko、Miyatake Satoko、Simon Marleen、van Binsbergen Ellen、van Jaarsveld Richard H、Matsumoto Naomichi、Cormier-Daire Valerie、J.Cullen Peter、Saitoh Shinji、Kato Kohji
    • Journal Title

      Journal of Medical Genetics

      Volume: 60 Issue: 4 Pages: 359-367

    • DOI

      10.1136/jmg-2022-108602

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A novel missense variant in CUL3 shows altered binding ability to BTB-adaptor proteins leading to diverse phenotypes of CUL3-related disorders2021

    • Author(s)
      Kato Kohji、Miya Fuyuki、Oka Yasuyoshi、Mizuno Seiji、Saitoh Shinji
    • Journal Title

      Journal of Human Genetics

      Volume: 66 Issue: 5 Pages: 491-498

    • DOI

      10.1038/s10038-020-00868-9

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Phosphorylated proteome analysis of a novel germline ABL1 mutation causing an autosomal dominant syndrome with ventricular septal defect2021

    • Author(s)
      Yamamoto Hidenori、Hayano Satoshi、Okuno Yusuke、Onoda Atsuto、Kato Kohji、Nagai Noriko、Fukasawa Yoshie、Saitoh Shinji、Takahashi Yoshiyuki、Kato Taichi
    • Journal Title

      International Journal of Cardiology

      Volume: 326 Pages: 81-87

    • DOI

      10.1016/j.ijcard.2020.10.032

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Expanding the phenotype of biallelic loss‐of‐function variants in the <scp> <i>NSUN2</i> </scp> gene: Description of four individuals with juvenile cataract, chronic nephritis, or brain anomaly as novel complications2020

    • Author(s)
      Kato Kohji、Mizuno Seiji、Morton Jenny、Toyama Miho、Hara Yuichiro、Wasmer Evangeline、Lehmann Alan、Ogi Tomoo
    • Journal Title

      American Journal of Medical Genetics Part A

      Volume: 185 Issue: 1 Pages: 282-285

    • DOI

      10.1002/ajmg.a.61927

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Biallelic VPS35L pathogenic variants cause 3C/Ritscher-Schinzel-like syndrome through dysfunction of retriever complex.2020

    • Author(s)
      Kato K, Okuno Y, Vasilev FF, Otomo T, Oishi H, Muramatsu H, Kawano Y, Oka Y, Nakazawa Y, Ogi T, Takahashi Y, Saitoh S.
    • Journal Title

      Journal of Medical genetics

      Volume: 57 Issue: 4 Pages: 245-253

    • DOI

      10.1136/jmedgenet-2019-106213

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Biallelic VPS35L pathogenic variants cause Ritscher-Schinzel-like syndrome: Description of clinical diversity and molecular mechanism.2021

    • Author(s)
      Shiomi Otsuji, Kohji Kato, Celine Huber,Seiji Mizuno, Mariene Rio, Satoko Miyatake, Naomichi Matsumoto, Valerie Cormier Daire, Shinji Saitoh
    • Organizer
      The American Society of Human Genetics Annual Meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Uncovering the underlying molecular mechanism in patients with Retriever dysfunction2021

    • Author(s)
      Kohji Kato, Peter J Cullen
    • Organizer
      UK membrane trafficking
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] A novel case with biallelic VPS35L variants confirms VPS35L as a causative gene of 3C/Ritscher-Schinzel-like syndrome.2020

    • Author(s)
      Shiomi Otsuji, Kohji Kato, Seiji Mizuno, Satoko Miyatake, Naomichi Matsumoto, Shinji Saitoh
    • Organizer
      第65回日本人類遺伝学会
    • Related Report
      2020 Research-status Report
  • [Presentation] Biallelic VPS35L pathogenic variants cause 3C/Ritscher-Schinzel-like syndrome through dysfunction of retriever complex2019

    • Author(s)
      Kato K, Oka Y, Muramatsu H, Vasilev F, Otomo T, Oishi H, Kawano Y, Nakazawa Y, Ogi T, Takahashi Y, Saitoh S.
    • Organizer
      ASHG 2019 Annual Meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] VPS35Lの両アレルにおける機能喪失型バリアントは 3C/Ritscher-Schinzel 症候群に類似の先天異 常症候群の原因となる2019

    • Author(s)
      加藤耕治, 岡泰由, 村松秀城, Vasilev F, 大友孝信, 大石久史, 河野好彦, 中沢由華, 荻朋男, 高橋義行, 齋藤伸治.
    • Organizer
      日本人類遺伝学会第64回大会
    • Related Report
      2019 Research-status Report

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Published: 2019-09-03   Modified: 2025-01-30  

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