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Development of novel mice models replicating Parkinson's disease pathology from its initial lesion

Research Project

Project/Area Number 17K16119
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Neurology
Research InstitutionKyoto University

Principal Investigator

Uemura Norihito  京都大学, 医学研究科, 特定助教 (90749045)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsパーキンソン病 / αシヌクレイン / 伝播 / マウスモデル / モデルマウス
Outline of Final Research Achievements

The WT mice injected with α-Syn PFFs into the olfactory bulb (OB) showed sparse α-Syn pathology along the olfactory tract and in the hippocampus. Meanwhile, α-Syn BAC Tg mice injected with α-Syn PFFs into the OB displayed similar distribution of α-Syn pathology but drastic pathology. These mice manifested smell loss, anxiety in new environments, deficit of memory retention at 7-8 months post-injection, which are seen as non-motor symptoms of patients with Parkinson’s disease (article in preparation). The WT mice injected with α-Syn PFFs into the stomach developed α-Syn aggregates in the dorsal motor nucleus of vagus nerve (dmX), a finding that was completely abolished when vagotomy was performed prior to inoculation of α-Syn PFFs. This suggests that the aggregates in the dmX were retrogradely induced via the vagal nerve (Uemura N et al., Mol Neurodegener 2018).

Academic Significance and Societal Importance of the Research Achievements

パーキンソン病(PD)のドパミン欠乏に基づく運動障害を主徴とする神経変性疾患で、病理学的特徴は神経細胞内αシヌクレイン凝集病変と黒質緻密部ドパミン神経細胞脱落である。しかし、αシヌクレイン凝集病変は脳内に広く観察され、また運動障害以外にも多様な非運動症状を呈する。これまで、多数の剖検解析から、αシヌクレイン凝集病変は嗅球と消化管神経叢から起こるとされるという仮説が提唱されていたが、これら最初期病変に由来する病理学的進展と症状発現については不明であった。本研究は、マウスの嗅球と消化管神経叢にαシヌクレインフィブリルを接種して解析することにより、PDの病態進行について新たな知見をもたらした。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (10 results)

All 2018 2017

All Journal Article (4 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (6 results)

  • [Journal Article] Inoculation of α-synuclein preformed fibrils into the mouse gastrointestinal tract induces Lewy body-like aggregates in the brainstem via the vagus nerve2018

    • Author(s)
      Uemura Norihito、Yagi Hisashi、Uemura Maiko T.、Hatanaka Yusuke、Yamakado Hodaka、Takahashi Ryosuke
    • Journal Title

      Molecular Neurodegeneration

      Volume: 13 Issue: 1 Pages: 21-21

    • DOI

      10.1186/s13024-018-0257-5

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] パーキンソン病(2)αシヌクレイン2018

    • Author(s)
      上村紀仁
    • Journal Title

      和光純薬時報

      Volume: 86 Pages: 12-14

    • Related Report
      2018 Annual Research Report
  • [Journal Article] αシヌクレインの凝集・伝播と細胞死2017

    • Author(s)
      澤村正典、上村紀仁、高橋良輔
    • Journal Title

      医学のあゆみ

      Volume: 262 Pages: 585-589

    • Related Report
      2017 Research-status Report
  • [Journal Article] GBA遺伝子変異とパーキンソン病2017

    • Author(s)
      中西悦郎、上村紀仁
    • Journal Title

      医学のあゆみ

      Volume: 262 Pages: 597-601

    • Related Report
      2017 Research-status Report
  • [Presentation] Pathological pathway via the olfactory bulb represents non-motor symptoms of Parkinson’s disease2018

    • Author(s)
      Norihito Uemura, Hodaka Yamakado, Ryosuke Takahashi
    • Organizer
      第59回日本神経学会学術大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Gut-to-brain propagation of α-synuclein aggregates in mice2018

    • Author(s)
      Norihito Uemura, Shinya Okuda, Hisashi Yagi, Ryosuke Takahashi
    • Organizer
      第12回MDSJ
    • Related Report
      2018 Annual Research Report
  • [Presentation] Inoculation of alpha-synuclein fibrils into the mouse gastrointestinal tract induces Lewy-like pathology in the brain via the vagal nerve2017

    • Author(s)
      上村紀仁、八木寿梓、髙橋良輔
    • Organizer
      第40回神経科学学会
    • Related Report
      2017 Research-status Report
  • [Presentation] αシヌクレインの消化管から脳幹への伝播について2017

    • Author(s)
      上村紀仁、髙橋良輔
    • Organizer
      第70回日本自律神経学会総会(JSNR 2017)
    • Related Report
      2017 Research-status Report
  • [Presentation] Inoculation of alpha-synuclein fibrils into the mouse gastrointestinal tract induces Lewy-like pathology in the brain via the vagal nerve2017

    • Author(s)
      上村紀仁、上村麻衣子、八木寿梓、髙橋良輔
    • Organizer
      WCN2017
    • Related Report
      2017 Research-status Report
  • [Presentation] 遺伝子改変とαシヌクレイン接種による新規パーキンソン病モデルマウスの開発2017

    • Author(s)
      上村紀仁
    • Organizer
      ConBio2017
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2020-03-30  

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