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Development and evaluation of soluble amyloid-beta oligomer formation inhibitors for anti-Alzheimer's disease drug

Research Project

Project/Area Number 19K05728
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 37030:Chemical biology-related
Research InstitutionMuroran Institute of Technology

Principal Investigator

Uwai Koji  室蘭工業大学, 大学院工学研究科, 准教授 (80347905)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsアルツハイマー病 / アミロイドβ / オリゴマー / 凝集阻害物質 / 構造活性相関 / 構想活性相関
Outline of Research at the Start

超高齢社会に伴う患者数の増加が予想されるアルツハイマー型認知症 (AD) は認知症の半数以上を占め,早急な対応が望まれるが,現状は対処療法しかない.この問題を克服するために,本研究は,AD患者の脳内で異常に凝集し,神経細胞障害の原因となるアミロイドβタンパク質の凝集を阻害する物質,その中でも特に毒性が高いとされる低分子オリゴマーの形成を阻害する物質を天然植物や食品から見つけ出し,化学的により作用の強い構造へと導き,その作用を核磁気共鳴法などの分析法や,試験管レベルや動物実験などの生物学的な方法により検証することで,新しいAD予防・治療薬の開発へと繋げようというものである.

Outline of Final Research Achievements

The purpose of the study was to find substances in natural plants that inhibits the formation of low-molecular-weight oligomers of amyloid β protein, which aggregates abnormally in the brain of patients with Alzheimer's disease (AD) and causes neuronal damage, and to lead to the development of new AD preventive drugs. As a result of screening on hundreds of species of plants, we found multiple active materials. From these, the active substance could be purified and multiple compounds showing high activity was isolated. For example, geraniin was isolated from Geranium thunbergii as an active substance, but as a result of various studies, it was clarified that the substance mainly responsible for the activity is not geraniin itself but its hydrolyzate. In addition, on the basis of active substances, we created higher active substances than the original substances.

Academic Significance and Societal Importance of the Research Achievements

アルツハイマー型認知症 (AD) は認知症の半数以上を占める.超高齢社会に伴う患者数の増加により早急な対応が望まれるが,現状は対処療法しかない.そこで,患者の脳内で異常凝集し,神経細胞を障害するアミロイドβ (Aβ) ,特に初期に生成する低分子オリゴマーの凝集阻害が注目されてきており,この早い段階での凝集を抑えることがAD予防の鍵となると考えられる. 本研究では,天然植物からゲンノショウコをはじめとする複数のAβオリゴマー凝集阻害物質を見出し,天然物質を上回る活性を示す物質を化学合成した.これらの物質やこれらを含む食品素材は,新しいAD予防・治療薬や食品に開発につながると期待される.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (13 results)

All 2022 2020 2019 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (8 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Remarks (3 results)

  • [Journal Article] Daurichromenic Acid from the Chinese Traditional Medicinal Plant Rhododendron dauricum Inhibits Sphingomyelin Synthase and Aβ Aggregation2020

    • Author(s)
      Deepak Hadya Virupaksha、Swamy Mahadeva M. M.、Murai Yuta、Suga Yoshiko、Anetai Masaki、Yo Takuro、Kuragano Masahiro、Uwai Koji、Tokuraku Kiyotaka、Monde Kenji
    • Journal Title

      Molecules

      Volume: 25 Issue: 18 Pages: 4077-4077

    • DOI

      10.3390/molecules25184077

    • NAID

      120006900321

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of Amyloid β42 Aggregation Inhibitory Activity of Commercial Dressings by A Microliter-Scale High-Throughput Screening System Using Quantum-Dot Nanoprobes2020

    • Author(s)
      Kuragano Masahiro、Yoshinari Wataru、Lin Xuguang、Shimamori Keiya、Uwai Koji、Tokuraku Kiyotaka
    • Journal Title

      Foods

      Volume: 9 Issue: 6 Pages: 825-825

    • DOI

      10.3390/foods9060825

    • NAID

      120006875758

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 北海道白糠町産素材を利用した認知症予防のための機能性食品開発2022

    • Author(s)
      上井幸司
    • Organizer
      超異分野学会 東京大会2022
    • Related Report
      2021 Annual Research Report
  • [Presentation] STD-NMR法による植物抽出エキスのアミロイドβ結合スクリーニング2020

    • Author(s)
      上井幸司、久米田博之、今前田大朗、倉賀野正弘、関千草、中野博人、相沢智康、徳樂清孝
    • Organizer
      日本薬学会第140年会
    • Related Report
      2019 Research-status Report
  • [Presentation] Development of an automated microliter-scale high-throughput evaluation system for amyloid aggregation inhibitory activity and evaluation of extracts from plants collected in Hokkaido2019

    • Author(s)
      Rina Sasaki, Masahiro Kuragano, Koji Uwai, Kiyotaka Tokuraku
    • Organizer
      The 27th Annual Meeting of International Congress on Nutrition and Integrative Medicine (ICNIM 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 自動化微量ハイスループットスクリーニングシステムによるシソ栽培品種のアミロイドβ凝集阻害活性の詳細分析2019

    • Author(s)
      島森圭弥、倉賀野正弘、佐々木里奈、上井幸司、徳樂清孝
    • Organizer
      第71回日本生物工学会大会
    • Related Report
      2019 Research-status Report
  • [Presentation] アミロイド凝集阻害物質の自動スクリーニングシステムにより見出した高活性天然抽出物の評価2019

    • Author(s)
      々木里奈、倉賀野正弘、門出健次、上井幸司、徳楽清孝
    • Organizer
      第57回日本生物物理学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] An automated microliter-scale high-throughput screening system (MSHTS) using quantum-dot nanoprobes for amyloid aggregation inhibitors2019

    • Author(s)
      Rina Sasaki, Reina Tainaka, Yuich Ando, Masahiro Kuragano, Kiminori Ota, Kenji Monde, Koji Uwai, Kiyotaka Tokuraku
    • Organizer
      Neuroscience 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] NMRスペクトルを指標としたアミロイドβ42凝集阻害物質の探索2019

    • Author(s)
      今前田大朗, 久米田博之, 久保研二, 渡邉輝, 倉賀野正弘, 相沢智康, 関千草, 中野博人, 徳樂清孝,上井幸司
    • Organizer
      第 58 回 NMR 討論会(2019)
    • Related Report
      2019 Research-status Report
  • [Presentation] ゲンノショウコ (Geranium thunbergii) 含有アミロイドβ凝集阻害物質の化学的解析2019

    • Author(s)
      上井幸司,久保研二,久米田博之,渡邉輝,関千草,中野博人,相沢智康,徳樂清孝
    • Organizer
      第38回日本認知症学会学術集会
    • Related Report
      2019 Research-status Report
  • [Remarks] 室蘭工業大学 生命有機化学研究室HP

    • URL

      http://www3.muroran-it.ac.jp/biocat/Top.html

    • Related Report
      2021 Annual Research Report
  • [Remarks] 室蘭工業大学研究者データベース

    • URL

      https://rdsoran.muroran-it.ac.jp/html/100000240_ja.html

    • Related Report
      2021 Annual Research Report
  • [Remarks] 研究室ホームページ

    • URL

      http://www3.muroran-it.ac.jp/biocat/Top.html

    • Related Report
      2020 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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