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Role of VPS13C at organelle contact sites and involvement in dopaminergic neurodegeneration

Research Project

Project/Area Number 19K16929
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 51030:Pathophysiologic neuroscience-related
Research InstitutionJuntendo University

Principal Investigator

Ogata Jun  順天堂大学, 医学部, 特任助教 (20825179)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
KeywordsVPS13C / パーキンソン病 / PLA2G6 / 脂質 / Parkinson's disease / オルガネラ接点 / 神経変性 / 脂肪滴 / オルガネラ
Outline of Research at the Start

パーキンソン病(PD)原因遺伝子であるVPS13Cは、ミトコンドリアや小胞体などの細胞小器官(オルガネラ)同士のコミュニケーションを制御する遺伝子であることが予想される。そこで本研究では、哺乳類細胞を用いた結合分子の同定と、PDモデルショウジョウバエを用いた解析により、オルガネラ間におけるVPS13Cの役割を明らかにする。この解析により、『オルガネラ間の接触は神経の機能・生存性にどのような役割を果たすのか?』という学術的問いに取り組む。

Outline of Final Research Achievements

In order to analyze the function of the Parkinson's disease (PD) causative gene, VPS13C, VPS13-EGFP knock-in Drosophila was prepared and its intracellular localization was examined. As a result, accumulation in lipid droplets and lysosomes was observed. Similarly, the PD causative gene PLA2G6 encodes phospholipid lipase A2. Therefore, we thought that the breakdown of lipid homeostasis might be one of the causes of PD. Omics analysis by comprehensive lipid analysis and RNAseq detected changes in several lipid molecular species and lipid-related genes, which partially correlated with several phenotypes.

Academic Significance and Societal Importance of the Research Achievements

PDの原因としてマイトファジー制御や小胞輸送制御の異常が考えられる。これらの現象を引き起こす原因として脂質分子、脂質関連遺伝子にフォーカスし、いくつかの候補をリストアップできた。リスク脂質分子種と責任脂質酵素の同定は、食事指導によるPDリスク予防、脂質酵素に対するPDの分子標的薬の探索に繋がると期待される。

Report

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

    (4 results)

All 2021 2020 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results) Book (1 results)

  • [Journal Article] A Novel LRRK2 Variant p.G2294R in the WD40 Domain Identified in Familial Parkinson’s Disease Affects LRRK2 Protein Levels2021

    • Author(s)
      Ogata Jun、Hirao Kentaro、Nishioka Kenya、Hayashida Arisa、Li Yuanzhe、Yoshino Hiroyo、Shimizu Soichiro、Hattori Nobutaka、Imai Yuzuru
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 7 Pages: 3708-3708

    • DOI

      10.3390/ijms22073708

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Loss of Parkinson’s disease-associated VPS13C modulates altered lipid metabolism and neural phenotypes caused by loss of another Parkinson’s disease-associated PLA2G6.2020

    • Author(s)
      緒方洵、上野 紀子、柴―福嶋 佳保里、井下 強、三浦 芳樹、今居 譲、服部 信孝
    • Organizer
      第43回 日本分子生物学会
    • Related Report
      2020 Research-status Report
  • [Presentation] パーキンソン病関連分子VPS13は脂質代謝に関与する2019

    • Author(s)
      緒方洵、上野紀子、柴-福嶋佳保里、井下強、三浦芳樹、今居譲、服部信孝
    • Organizer
      第42回 日本分子生物学会
    • Related Report
      2019 Research-status Report
  • [Book] Experimental Models of Parkinson’s Disease, Chapter 3: α-Synuclein Seeding Assay Using Cultured Cells2021

    • Author(s)
      Jun Ogata, Daisaku Takemoto, Shotaro Shimonaka, Yuzuru Imai, Nobutaka Hattori
    • Total Pages
      13
    • Publisher
      Springer
    • ISBN
      9781071614945
    • Related Report
      2020 Research-status Report

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

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