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Elucidation of pathogenesis of Alzheimer's disease by the development of diagnostic methods for abnormal aggregates

Research Project

Project/Area Number 20H03457
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 49010:Pathological biochemistry-related
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) 村松 慎一  自治医科大学, 医学部, 教授 (10239543)
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(上席・主任研究員クラス) (30735345)
豊島 近  東京大学, 定量生命科学研究所, 特任教授 (70172210)
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) 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: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2021: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2020: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
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 / コンパニオン診断薬 / 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 / 診断方法
Outline of Research at the Start

アルツハイマー病は、体に本来ある生理的タンパク質が異常に凝集し、神経細胞の機能が阻害され、最終的に死に至ることで、病気が起きる。本研究では、申請者らが独自に患者脳から見出した異常凝集体「ASPD」の立体構造を明らかにした上で、その構造に合うASPDに対する選択的な新たなPETプローブを開発すること、さらにASPDを認識する抗ASPD抗体を組み合わせつころで、ASPDに選択的な血液・脳脊髄液に対する診断方法を確立することを目指す。これによって、神経細胞死の原因になると考えられるASPDが、アルツハイマー病発症過程のいつ形成されるのか、発症あるいは進行と本当に相関するのかどうか、を検証したい。

Outline of Final Research Achievements

Based on the knowledge and technology that the applicants have independently acquired, this research aimed to understand the three-dimensional structure of ASPD, a highly toxic assembly derived from Alzheimer's disease patient brains, and to develop a new ASPD-selective PET probe based on this understanding. Furthermore, we aimed to establish an ASPD-selective diagnostic method for blood or cerebrospinal fluid by combining anti-ASPD antibodies. We elucidated part of the structural basis of the interaction between anti-ASPD antibodies and ASPD, and found a PET probe candidate derived from an ASPD-binding 4-residue peptide with high blood stability. CSF and plasma assays were established, and some ASPD-positive specimens were detected. As mentioned above, the research progressed smoothly as planned.

Academic Significance and Societal Importance of the Research Achievements

今回の研究により、患者脳に実際に存在するAβ凝集体を脳で検出するためのPETプローブとなり得る候補を得て、さらに、体外診断法のプロトタイプも構築し、実際に一部の検体で検出に成功出来た。これによって、今まで殆ど不明である、神経毒性のあるAβ凝集体が脳のどこで最初に形成され、それがどう伝搬するのか、さらに、臨床的病態の進行とどう相関するのかをヒトで検証していくことが将来的に可能になると考えられ、アルツハイマー病の発症の正しい理解に繋がると期待される。これによって、より安全で有効な治療法開発も促進すると考えられる。

Report

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

    (18 results)

All 2022 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 5 results) Presentation (6 results) (of which Invited: 1 results) Remarks (4 results) Patent(Industrial Property Rights) (1 results)

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

    • Related Report
      2021 Annual Research Report
  • [Journal Article] High-throughput screening for agonists of ROS production in live human vascular endothelial cells.2021

    • Author(s)
      Sasahara T, Hoshi M
    • Journal Title

      STAR Protocol

      Volume: 3(1) Issue: 1 Pages: 101053-101053

    • DOI

      10.1016/j.xpro.2021.101053

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Alzheimer's Aβ assembly binds sodium pump and blocks endothelial NOS activity via ROS-PKC pathway in brain vascular endothelial cells2021

    • Author(s)
      Sasahara Tomoya、Satomura Kaori、Tada Mari、Kakita Akiyoshi、Hoshi Minako
    • Journal Title

      iScience

      Volume: 24 Issue: 9 Pages: 102936-102936

    • DOI

      10.1016/j.isci.2021.102936

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Multi-angle development of therapeutic methods for Alzheimer's disease.2021

    • Author(s)
      Hoshi, M.,
    • Journal Title

      Br. J. Pharmacol. (Cover)

      Volume: 178 Issue: 4 Pages: 770-783

    • DOI

      10.1111/bph.15174

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [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
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Region‐ and neuronal‐subtype‐specific expression of Na,K‐ATPase alpha and beta subunit isoforms in the mouse brain2020

    • Author(s)
      Murata Koshi、Kinoshita Tomoki、Ishikawa Tatsuya、Kuroda Kazuki、Hoshi Minako、Fukazawa Yugo
    • Journal Title

      Journal of Comparative Neurology

      Volume: - Issue: 16 Pages: 2654-2678

    • DOI

      10.1002/cne.24924

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Principal Component Analysis of Data from NMR Titration Experiment of Uniformly 15N Labelled Amyloid beta 1-42 Peptide with Osmolytes and Phenolic Compounds2020

    • Author(s)
      Iwaya, N., Goda, N., Matsuzaki, M., Narita, A., Shigemitsu, Y., Tenno, T., Abe, Y., Hoshi, M., and Hiroaki,H.
    • Journal Title

      Arch. Biochem. Biophys.

      Volume: 690 Pages: 108446-108446

    • DOI

      10.1016/j.abb.2020.108446

    • NAID

      120007183199

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] The damage of vascular cells by Alzheimer's amyloid-β assemblies, amylospheroids, increases the expression of BACE protein through endothelial cells-derived angiotensin II release.2022

    • Author(s)
      笹原智也、星美奈子
    • Organizer
      第95回日本薬理学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] High-throughput screening for agonists of ROS production in live human vascular endothelial cells.2022

    • Author(s)
      笹原智也、星美奈子
    • Organizer
      第96回日本薬理学会年会/第43回日本臨床薬理学会学術総会 合同学術会議
    • Related Report
      2022 Annual Research Report
  • [Presentation] アルツハイマー病アミロイドβ凝集体“アミロスフェロイド”による血管内皮細胞障害はアンジオテンシンIIの遊離を介して神経細胞のBACE発現量を増加する2022

    • Author(s)
      笹原 智也、星美奈子
    • Organizer
      第95回日本薬理学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Establishment of a new tri-culture system for elucidating crosstalk mechanisms between central nervous system and brain microvascular endothelial system in Alzheimer’s disease brains2021

    • Author(s)
      笹原智也、星美奈子
    • Organizer
      第94回日本薬理学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] アルツハイマー病とナトリウムポンプ、タンパク質間相互作用を標的とする低分子医薬品の開発2020

    • Author(s)
      星美奈子
    • Organizer
      第29回日本有病者歯科医療学会総会・学術大会(神戸)(2020年3月1日)(招待講演)
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] アルツハイマー病患者脳由来アミロイドβアセンブリー「アミロスフェロイド」はヒト由来脳微小血管内皮のNa+, K+-ATPase α3を介してeNOSを不活性化する(Highly neurotoxic amyloid-β assemblies from Alzheimer's disease brain, amylospheroids, inhibit endothelial NAKα3 activity, resulting in the inhibition of eNOS activity in human brain microvascular endothelial cells)2020

    • Author(s)
      笹原 智也、里村香織、他田真理、柿田明美、星美奈子
    • Organizer
      第93回日本薬理学会年会(神奈川)
    • Related Report
      2020 Annual Research Report
  • [Remarks] 神経変性疾患研究部研究内容

    • URL

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

    • Related Report
      2022 Annual Research Report
  • [Remarks] アルツハイマー病の脳血管障害を起こす分子メカニズム解明に初めて成功!

    • URL

      https://www.facebook.com/kobeiryosangyotoshi/posts/pfbid0pwf3SWBFXMEprLLmPUHMFtyQq8AeBPUoQnS9uESYqxrHT1DQsuZbTBsbZRzPsz2al

    • Related Report
      2021 Annual Research Report
  • [Remarks] 星博士の #アルツハイマー病 に関する研究が英国薬理学会誌の表紙を飾りました!

    • URL

      https://www.facebook.com/kobeiryosangyotoshi/posts/pfbid07akJkhfnxhYn8c8btGgCoVYcRKL8wsfvPJwW6pxWErZD1HGfvTAQ7d6b4LjWTKjzl

    • Related Report
      2021 Annual Research Report
  • [Remarks] https://www.fbri-kobe.org/laboratory/research3/

    • Related Report
      2020 Annual Research Report
  • [Patent(Industrial Property Rights)] 細胞分泌型ASPD様構造体それを用いるワクチン2022

    • Inventor(s)
      星、荒井
    • Industrial Property Rights Holder
      星、荒井
    • Industrial Property Rights Type
      特許
    • Filing Date
      2022
    • Acquisition Date
      2022
    • Related Report
      2022 Annual Research Report

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

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