• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Identification of amyloid beta aggregation inhibitors in a traditional herbal medicine Uncaria rhynchophylla and their inhibitory mechanism

Research Project

Project/Area Number 25850080
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Bioorganic chemistry
Research InstitutionKyoto University

Principal Investigator

MURAKAMI Kazuma  京都大学, (連合)農学研究科(研究院), 准教授 (80571281)

Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsアルツハイマー病 / アミロイドβ / 凝集 / 漢方生薬 / 単離構造決定 / チョウトウコウ / トリテルペン / NMR / カギカズラ / 構造決定 / トリテルペノイド
Outline of Final Research Achievements

The 42-mer amyloid β-protein (Aβ42), a causative agent of Alzheimer’s disease (AD), oligomerizes (aggregates) to show neurotoxicity. Therefore, inhibitors of Aβ42 aggregation including natural products and functional food ingredients are promising agents for the therapeutics of AD. We identified uncarinic acids A ~ D from Uncaria rhynchophylla, a Chinese medicinal herb, as active components for the inhibition of Aβ42 aggregation. Uncarinic acid A ~ D are triterpenoid caffeate ester, which are novel type of aggregation inhibitors. In the aggregation process of Aβ42, they inhibited the nucleation phase required for Aβ42 oligomerization, rather than the extension phase for its fibril elongation, which is a target of typical aggregation inhibitors like catechol-type flavonoids.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (13 results)

All 2014 2013 Other

All Presentation (8 results) (of which Invited: 5 results) Book (2 results) Remarks (3 results)

  • [Presentation] アミロイドβを標的としたアルツハイマー病の新しい治療戦略2014

    • Author(s)
      村上一馬
    • Organizer
      日本農芸化学会中部支部 第172回例会(若手シンポジウム)「化学の視点から拓く天然物・生命科学研究」
    • Place of Presentation
      信州大学農学部(長野県南箕輪村)
    • Year and Date
      2014-11-22
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Inhibitors for Aβ42 aggregation in a traditional herbal medicine Uncaria rhynchophylla2014

    • Author(s)
      Kazuma Murakami, Kyohei Ido, Mizuho Sato, Kanoko Yamaguchi, and Kazuhiro Irie
    • Organizer
      Alzheimer's Association International Conference 2014
    • Place of Presentation
      Bella Center A/S (Copenhagen, Denmark)
    • Year and Date
      2014-07-14
    • Related Report
      2014 Annual Research Report
  • [Presentation] ポリフェノールによるアミロイドβ42の凝集抑制機構

    • Author(s)
      村上一馬ら
    • Organizer
      第6回タンパク質の異常凝集とその防御・修復機構に関する研究会
    • Place of Presentation
      京都大学原子炉実験所(大阪府熊取町)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] ポリフェノールによるアミロイド β の凝集阻害機構

    • Author(s)
      村上一馬ら
    • Organizer
      第3回生理化学ユニットシンポジウム
    • Place of Presentation
      京都大学楽友会館(京都市)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Vitamin C and silymarin restores Aβ oligomerization and behavioral abnormality in Alzheimer’s pathology

    • Author(s)
      Murakami, K. et al.
    • Organizer
      Alzheimer’s Association International Conference 2013
    • Place of Presentation
      Boston Convention Center(Boston MA, USA)
    • Related Report
      2013 Research-status Report
  • [Presentation] 酸化ストレスに着目したアミロイドβペプチドの神経細胞毒性発現機構

    • Author(s)
      村上一馬
    • Organizer
      農芸化学会関西支部例会(第483回講演会)
    • Place of Presentation
      京都大学楽友会館(京都市)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] アミロイドβの毒性オリゴマー認識薬開発への挑戦

    • Author(s)
      村上一馬
    • Organizer
      新学術領域研究 天然物ケミカルバイオロジー 地区ミニシンポジウム「化学と生物学の壁と打開策:次世代天然物ケミカルバイオロジー研究の開拓へ」
    • Place of Presentation
      理化学研究所鈴木梅太郎記念ホール(和光市)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] 伝統生薬チョウトウコウに含まれるアミロイドβ凝集抑制物質

    • Author(s)
      村上一馬ら
    • Organizer
      2014年度日本農芸化学会大会
    • Place of Presentation
      明治大学生田キャンパス(川崎市)
    • Related Report
      2013 Research-status Report
  • [Book] Diet and Nutrition in Dementia and Cognitive Decline: Potential role of vitamin C in the prevention of Alzheimer’s disease2014

    • Author(s)
      Murakami, K. et al.
    • Publisher
      Elsevier
    • Related Report
      2013 Research-status Report
  • [Book] タンパク質の異常凝集とその防御・修復機構に関する研究会報告(VI)2013

    • Author(s)
      村上一馬ら
    • Total Pages
      5
    • Publisher
      京都大学原子炉実験所
    • Related Report
      2013 Research-status Report
  • [Remarks] 京都大学農学研究科食品生物科学専攻生命有機化学分野

    • URL

      http://www.orgchem.kais.kyoto-u.ac.jp/

    • Related Report
      2014 Annual Research Report
  • [Remarks] アウトリーチ活動:化学を武器にアルツハイマー病に挑む,京都大学アカデミックデイ2014

    • URL

      http://research.kyoto-u.ac.jp/academic-day/2014/38/

    • Related Report
      2014 Annual Research Report
  • [Remarks] 京都大学農学研究科食品生物科学専攻生命有機科学分野

    • URL

      http://www.orgchem.kais.kyoto-u.ac.jp/

    • Related Report
      2013 Research-status Report

URL: 

Published: 2014-07-25   Modified: 2019-07-29  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi