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Cerebrovascular-oriented combined cerebral amyloid angiopathy eradication therapy

Research Project

Project/Area Number 19KK0410
Research Category

Fund for the Promotion of Joint International Research (Fostering Joint International Research (A))

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

Principal Investigator

Inoue Yasuteru  熊本大学, 大学院生命科学研究部(医), 特定研究員 (00806408)

Project Period (FY) 2020 – 2023
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥12,870,000 (Direct Cost: ¥9,900,000、Indirect Cost: ¥2,970,000)
Keywords脳アミロイド血管症 / アミロイドβ / アミロイドーシス / αエノラーゼ / 脳出血 / 認知症 / 脳アミロイドーシス / アルツハイマー病
Outline of Research at the Start

高齢化社会を迎え脳アミロイド血管症 (CAA)による認知症、脳出血に罹患する患者がさらに増加することは確実である。しかし、その治療法はおろか、研究開発は不十分である。本研究では、人体最大の臓器である血管系の分子機構に焦点を充てた研究を行い、CAAのみならずアルツハイマー病(AD) などの治療法の開発を目指す。昨今、Aβの最終排出経路として脳血管周囲ドレナージ経路の重要性が指摘され、脳血管に焦点を充てた研究が広く神経疾患の治療開発の糸口になる可能性が示されている。申請者は脳血管におけるα-エノラーゼとLRP-1に焦点を充てた研究を展開し、脳血管指向型の新しい神経疾患の治療開発を展開する。

Outline of Final Research Achievements

The applicant developed a model to continuously administer α-enolase (ENO1) into the brain of CAA/AD transgenic mice using an infusion pump. They conducted biochemical and behavioral analyses, finding that ENO1 reduced amyloid-beta (Aβ) deposition in the brain vasculature and parenchyma, with significant decreases in insoluble Aβ40 and Aβ42. Spatial working memory improved in the ENO1-treated group. ENO1 likely inhibits Aβ polymerization, as evidenced by reduced Aβ monomers. There were no differences in amyloid precursor protein (APP) or its metabolites between treated and untreated groups. ENO1 was nitrosylated in CAA/AD mice, reducing its enzymatic activity in vitro. Heat-inactivated ENO1 did not reduce Aβ or improve memory, suggesting that nitrosylation decreases ENO1 activity, contributing to CAA/AD progression.

Academic Significance and Societal Importance of the Research Achievements

申請者は、α-エノラーゼ(ENO1)を使い、脳内にアミロイドベータ(Aβ)が蓄積するアルツハイマー病モデルマウスで研究を行いました。ENO1を脳に持続投与すると、Aβの蓄積が減少し、記憶機能が改善されました。これにより、ENO1がAβの分解を助け、アルツハイマー病の進行を遅らせる可能性が示されました。社会的には、アルツハイマー病の新しい治療法開発に貢献する重要な研究成果です。

Report

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

    (7 results)

All 2023 2022 2021

All Int'l Joint Research (1 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Int'l Joint Research] Mayo Clinic, FL, USA(米国)2021

    • Year and Date
      2021-04-01
    • Related Report
      2023 Annual Research Report
  • [Journal Article] Reversible Periventricular Hyperintensity Lesions in Cerebral Amyloid Angiopathy: A Case Mimicking Cerebral Amyloid Angiopathy-related Inflammation2022

    • Author(s)
      Inoue Yasuteru、Nakajima Makoto、Inatomi Yuichiro、Masuda Teruaki、Misumi Yohei、Nomura Toshiya、Uetani Hiroyuki、Hirai Toshinori、Ueda Mitsuharu
    • Journal Title

      Internal Medicine

      Volume: 61 Issue: 23 Pages: 3581-3584

    • DOI

      10.2169/internalmedicine.8630-21

    • ISSN
      0918-2918, 1349-7235
    • Year and Date
      2022-12-01
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] α-Enolase reduces cerebrovascular Aβ deposits by protecting Aβ amyloid formation2022

    • Author(s)
      Inoue Y, Tasaki M, Masuda T, Misumi Y, Nomura T, Ando Y, Ueda M.
    • Journal Title

      Cell Mol Life Sci

      Volume: 79 Issue: 8 Pages: 462-462

    • DOI

      10.1007/s00018-022-04493-x

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Metformin attenuates vascular pathology by increasing expression of insulin-degrading enzyme in a mixed model of cerebral amyloid angiopathy and type 2 diabetes mellitus2021

    • Author(s)
      Inoue Yasuteru、Masuda Teruaki、Misumi Yohei、Ando Yukio、Ueda Mitsuharu
    • Journal Title

      Neuroscience Letters

      Volume: 762 Pages: 136136-136136

    • DOI

      10.1016/j.neulet.2021.136136

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Current Management and Therapeutic Strategies for Cerebral Amyloid Angiopathy2021

    • Author(s)
      Yasuteru Inoue, Yukio Ando, Yohei Misumi, Mitsuharu Ueda
    • Journal Title

      Int J Mol Sci

      Volume: 22 Issue: 8 Pages: 3869-3869

    • DOI

      10.3390/ijms22083869

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] プロテオミクスを用いた脳アミロイドアンギオパチーの進行抑制分子の探索2023

    • Author(s)
      井上 泰輝
    • Organizer
      第64回日本神経病理学会総会学術研究会/第66回日本神経化学会大会合同大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Cutting-Edge Therapeutic Approaches to Cerebral Amyloid Angiopathy2022

    • Author(s)
      Yasuteru Inoue
    • Organizer
      8th International Cerebral Amyloid Angiopathy (CAA) Conference
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2020-02-06   Modified: 2025-01-30  

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