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Involvement of abnormal glycosylation in the pathogenesis of Parkinson's disease

Research Project

Project/Area Number 20H03584
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 52010:General internal medicine-related
Research InstitutionDepartment of Clinical Research, National Hospital Organization Tokushima National Hospital

Principal Investigator

Kurota Yukiko  独立行政法人国立病院機構徳島病院(臨床研究部), その他部局等, 研究員(移行) (70398014)

Co-Investigator(Kenkyū-buntansha) 三ツ井 貴夫  独立行政法人国立病院機構徳島病院(臨床研究部), その他部局等, その他 (80294726)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2022: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2021: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2020: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Keywordsパーキンソン病 / PARK2
Outline of Research at the Start

我々はPARK2の病態解明を進める中で、パーキンがミトコンドリア内においてO型糖鎖修飾を受けていること、また修飾糖鎖にはO-結合型アセチルグルコサミン(O-GlcNAc)が付加されていること、さらにパーキンがO-GlcNAc転移酵素(OGT)に結合していることを見出した。このことはパーキンが自らO-GlcNAc修飾を受けるのみならず、他のタンパクのO-GlcNAc修飾を制御している可能性を示唆するものである。
本研究では予備的検討で得られた断片的な知見を踏まえ、O-GlcNAcylationの障害が、PARK2のみならず孤発性パーキンソン病の発症メカニズムに寄与しうるか否かを明らかにする。

Outline of Final Research Achievements

We have found that Parkin is intracellularly modified with O-GlcNAc (O-GlcNAcylation) and localized to mitochondria. When the deglycosylating enzymes O-glycosidase and Sialidase A were added simultaneously to the glycosylated parkin, there was a shift in the height of the bands of the non-glycosylated Parkin. Monosaccharide analysis suggested that Parkin was O-glycosylated.Glycoblotting analysis showed that (HexNAc)1 was the major component, and the Click-iT reaction also confirmed O-GlcNAc modification.

Academic Significance and Societal Importance of the Research Achievements

本研究で得られた知見より、哺乳動物細胞内でパーキンの一部はO-GlcNAcを含むO型糖鎖が付加されていることは確実である。我々は本研究においてO-GlcNAc 修飾機構の異常がパーキンソン病の発症要因になりうるか否かを、家族性パーキンソン病である PARK2 において、さらには孤発性パーキンソン病において明らかにするために計画された。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (12 results)

All 2023 2022 2021 2020

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (6 results)

  • [Journal Article] Parkin gene analysis of familial Parkinson’s disease in Tokushima National Hospital of 2022-20232023

    • Author(s)
      Yukiko Kuroda Maki, et.al.
    • Journal Title

      Journal of Tokushima National Hospital

      Volume: 14 Pages: 1-3

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Gene analysis of the Parkin-related gene Klokin 1 in Tokushima National Hospital of 2022-20232023

    • Author(s)
      Yukiko Kuroda Maki, et.al.
    • Journal Title

      Journal of Tokushima National Hospital

      Volume: 14 Pages: 4-6

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Parkin gene analysis of familial Parkinson's disease in Tokushima National Hospital of 2021-20222022

    • Author(s)
      Yukiko Kuroda Maki, et.al.
    • Journal Title

      Journal of Tokushima National Hospital

      Volume: 13 Pages: 1-3

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Gene analysis of the Parkin-related gene Klokin 1in Tokushima National of 2021-20222022

    • Author(s)
      Yukiko Kuroda Maki,et al.
    • Journal Title

      Journal of Tokushima National Hospital

      Volume: 13 Pages: 4-6

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Parkin gene analysis of familial Parkinson's disease in Tokushima National Hospital of 2020-20212021

    • Author(s)
      Yukiko Kuroda Maki, et.al.
    • Journal Title

      Journal of Tokushima National Hospital

      Volume: 12 Pages: 1-3

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Gene analysis of the Parkin-related gene Klokin 1in Tokushima National of 2020-20212021

    • Author(s)
      Yukiko Kuroda Maki,et al.
    • Journal Title

      Journal of Tokushima National Hospital

      Volume: 12 Pages: 4-6

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] Intracellular glycosylation of Parkin protein2022

    • Author(s)
      牧 由紀子
    • Organizer
      第63回日本神経学会学術大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] パ-キンおよびパーキン関連遺伝子(Klokin 1)の変異解析:徳島病院における成績2022

    • Author(s)
      牧 由紀子
    • Organizer
      第76回国立病院総合医学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Biochemical analysis of Parkin glycosylation2021

    • Author(s)
      Yukiko Maki
    • Organizer
      第62回 日本神経学会学術大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] デュシェンヌ型筋ジストロフィー生検骨格筋におけるチアミン・トランスポーター2021

    • Author(s)
      三ツ井 貴夫、牧 由紀子
    • Organizer
      第62回 日本神経学会学術大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 徳島病院におけるPARK2およびPARK2関連遺伝子(Klokin 1)の変異解析2021

    • Author(s)
      牧 由紀子
    • Organizer
      第75回 国立病院総合医学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Parkin is modified with O-GlcNAc2020

    • Author(s)
      Yukiko Maki
    • Organizer
      第61回 日本神経学会学術大会
    • Related Report
      2020 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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