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Propagation of Alzheimer's disease neuronal cell death by intracellular formation and secretion of abnormal aggregates

Research Project

Project/Area Number 17H04055
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Pathological medical chemistry
Research InstitutionFoundation for Biomedical Research and Innovation at Kobe

Principal Investigator

HOSHI Minako  公益財団法人神戸医療産業都市推進機構, その他部局等, 研究員(副センター長・部長クラス) (30374010)

Co-Investigator(Kenkyū-buntansha) 廣明 秀一  名古屋大学, 創薬科学研究科, 教授 (10336589)
垣尾 翔大  公益財団法人神戸医療産業都市推進機構, その他部局等, 研究員(研究員・PDクラス) (10789085)
笹原 智也  公益財団法人神戸医療産業都市推進機構, その他部局等, 研究員(研究員・PDクラス) (30735345)
久保 厚子  公益財団法人神戸医療産業都市推進機構, その他部局等, 研究員(研究員・PDクラス) (70647792)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2019: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2017: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Keywordsナトリウムポンプ / 神経変性疾患 / 神経細胞死 / アルツハイマー病 / タンパク質ータンパク質相互作用 / ペプチド創薬 / 異常凝集体 / 脳神経疾患
Outline of Final Research Achievements

Neuronal cell death in Alzheimer's disease occurs when physiologically produced amyloid β-protein (Aβ) aggregates and exerts toxicity. However, it is unclear how Aβ aggregates are formed, how cell death occurs and how lesions propagate in the brain. In this study, we focused on the Aβ aggregate termed ASPD, found by the applicants in the patient's brain, and aimed to clarify the above. As a result, it was revealed that Aβ is produced in all neuronal cells, but ASPD are produced and secreted in a certain type of neurons, bind to sodium pump NAKα3, and causes NAKα3-expressing nerve cells to degenerate. We also searched and identified a seed peptide that blocks the binding between ASPD and NAKα3, which opened the basis for drug discovery.

Academic Significance and Societal Importance of the Research Achievements

今回の研究により、Aβの凝集体形成が、単純にAβの濃度だけで決まっている訳ではないことが初めて明確に示された。アルツハイマー病の治療法開発としては、神経細胞の保護機能がある生理的Aβを全て除去することは好ましくない。これにかわる新たな治療法が求められているが、それに対する新たな可能性を提示出来た。また、実際に形成された凝集体と、その標的となるナトリウムポンプの結合を阻止するシードペプチドを発見したことは、創薬への現実的な一歩となる成果である。さらに、ナトリウムポンプは、パーキンソン病など他の神経変性疾患の病態とも関連することから、本研究の成果は他の神経変性疾患にも敷衍可能である。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (24 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (7 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (10 results) (of which Int'l Joint Research: 6 results,  Invited: 5 results) Book (3 results) Remarks (2 results)

  • [Int'l Joint Research] Karolinska Institutet/University of Gothenburg(スウェーデン)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Vlaams Instituut voor Biotechnologie(ベルギー)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] QPS(オーストリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Weizmann Institute of Science(イスラエル)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Karlinska Institute(Sweden)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Weismann Institue(Israel)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Leuven University(Belgium)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] NMR-based site-resolved profiling of ホイ-amyloid misfolding reveals structural transitions from pathologically relevant spherical oligomer to fibril.2020

    • Author(s)
      Yiling Xiao, Isamu Matsuda, Masafumi Inoue, Tomoya Sasahara, Minako Hoshi, Yoshitaka Ishii
    • Journal Title

      The Journal of Biological Chemistry

      Volume: 295 Issue: 2 Pages: 458-467

    • DOI

      10.1074/jbc.ra119.008522

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Alzheimer Abeta Assemblies Accumulate in Excitatory Neurons upon Proteasome Inhibition and Kill Nearby NAK3 Neurons by Secretion2019

    • Author(s)
      Komura, H., Kakio, S., Sasahara, T., Arai, Y., Takino, N., Sato, M., Satomura, K., Ohnishi, T., Nabesima, Y., Muramatsu, S., Kii, I., and Hoshi, M.
    • Journal Title

      iScience

      Volume: 13 Pages: 452-477

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Highly neurotoxic amyloid-ホイ assemblies from Alzheimer's disease brain, amylospheroids, inhibit endothelial NAKホア3 activity, resulting in the inhibition of eNOS activity in human brain microvascular endothelial cells2020

    • Author(s)
      笹原 智也
    • Organizer
      第93回日本薬理学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ナトリウムポンプと神経変性疾患の新たな関係2019

    • Author(s)
      星 美奈子
    • Organizer
      第30回日本医学会総会2019
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 生化学者が進めてきたアルツハイマー病研究の道のり:基礎から応用また基礎へ2019

    • Author(s)
      星 美奈子
    • Organizer
      生化学若い研究者の会 近畿支部 2019年初夏のセミナー
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] ナトリウムポンプとアルツハイマー病2019

    • Author(s)
      星 美奈子
    • Organizer
      東北大学加齢医学研究所セミナー
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Toxic amyloid-β assemblies, amylospheroids, inactivate eNOS through a NAKα-mediated ROS/PKC pathway in human brain microvascular endothelial cells2018

    • Author(s)
      笹原智也、里村香織、星美奈子
    • Organizer
      「日本薬理学会」「国際薬理・臨床薬理学会」合同大会
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Proteasomal dysfunction accelerates amyloid-beta to form secretable toxic Alzheimer’s assemblies in trans-Golgi of excitatory neurons2018

    • Author(s)
      Komura,H., Arai,Y., Matsumura,S., Hoshi,M.
    • Organizer
      Gordon Research Conference / Neurobiology of Brain Disorders
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Analysis of cell-type differences in APP processing and Abeta production2018

    • Author(s)
      Kakio, S., Arai, Y., Satomura, K., Hoshi, M.
    • Organizer
      Gordon Research Conference / Neurobiology of Brain Disorders
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Toxic amyloid-beta assemblies, amylospheroids, inactivate eNOS through NAK alpha3-mediated mitochondrial ROS production in human brain microvascular endothelial cells2018

    • Author(s)
      Sasahara, T., Satomura, K., Kakita, A., Hoshi, M.
    • Organizer
      Gordon Research Conference / Neurobiology of Brain Disorders
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Na+, K+-ATPase α3 is a Death Target of Alzheimer Amyloid-βAssembly What Shall We Do Next towards A Better Understanding of Na+, K+-ATPase α3’s Role in Health and Disease?2017

    • Author(s)
      Minako Hoshi
    • Organizer
      The 6th Symposium on ATP1A in Disease 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Na+, K+-ATPase α3 and Alzheimer’s Disease2017

    • Author(s)
      Minako Hoshi
    • Organizer
      The 15th International Conference on Na,K-ATPase and Related Transport ATPase
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Book] "Molecular Biology of Neurodegenerative Diseases: Visions for the Future, Volume 168 1st Edition(Chapter Two: Tracking down a missing trigger for Alzheimer's disease by mass spectrometric imaging based on brain network analysis)"2019

    • Author(s)
      Minako Hoshi
    • Total Pages
      408
    • Publisher
      Elsevier
    • ISBN
      9780128178751
    • Related Report
      2019 Annual Research Report
  • [Book] アルツハイマー病発症メカニズムと新規診断法・創薬・治療開発2019

    • Author(s)
      星美奈子
    • Total Pages
      800
    • Publisher
      株式会社エヌ・ティー・エス
    • ISBN
      4860435788
    • Related Report
      2018 Annual Research Report
  • [Book] アルツハイマー病発症メカニズムと新規診断法・創薬・治療開発2018

    • Author(s)
      星 美奈子
    • Total Pages
      400
    • Publisher
      株式会社エヌ・ティー・エス
    • Related Report
      2017 Annual Research Report
  • [Remarks] 神経変性疾患研究部

    • URL

      https://www.fbri-kobe.org/laboratory/research3/

    • Related Report
      2019 Annual Research Report
  • [Remarks] アルツハイマー病の神経毒性物質の形成と伝搬機構を解明 -発症に繋がる新たなメカニズムを提案-

    • URL

      http://www.kyoto-u.ac.jp/ja/research/research_results/2018/190301_1.html

    • Related Report
      2018 Annual Research Report

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Published: 2017-04-28   Modified: 2021-02-19  

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