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Structure-activity relationship study on the tumor angiogenesis inhibition activity of fucoidan

Research Project

Project/Area Number 18K05455
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 38040:Bioorganic chemistry-related
Research InstitutionGifu University

Principal Investigator

Imamura Akihiro  岐阜大学, 応用生物科学部, 准教授 (30610951)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsフコイダン / 糖鎖 / 有機合成 / 立体選択的グリコシル化 / 化学合成 / 構造活性相関 / 血管新生 / 硫酸化多糖
Outline of Final Research Achievements

We have developed a unique synthetic method for natural fucoidan molecules. Based on the fact that L-fucose is 6-deoxy-L-galactose, our strategy consists of the stereoselective construction of α-L-galactoside and its conversion to α-L-fucoside via C6-deoxygenation. In this study, the usefulness of fluorous chemistry has been examined for the practical construction of polysaccharide molecules like fucoidan and it was found that FSPE (Fluorous Solid Phase Extraction) was useful for quick purification of the desired product. Methods established in this study delivered alpha(1,3)-L-fucosyl oligomer (fucan) in good yields. Finally, sulfonation of hydroxyl groups in fucan furnished structurally-defined fucoidan molecule.

Academic Significance and Societal Importance of the Research Achievements

従前、フコイダンの生理機能に関する研究は、天然の海草類から抽出した言わば混じり物で行われてきたため、フコイダンの分子構造と生理活性の関係性が真に評価されていなかった。そこで本研究では、有機化学的アプローチにより構造明確で純粋なフコイダン分子を創出することで、明瞭な構造活性相関のデータを取得し、フコイダンの多彩な生理活性を創薬などへ活かせると考えた。本研究では、独創的な化学合成法を開発し、それにより従来困難であった構造均一なフコイダン分子の創出に成功した。現在、合成した純粋なフコイダン分子を利用し、構造活性相関研究を進めている。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (8 results)

All 2020 2019 2018

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

  • [Journal Article] Indirect synthetic route to α-L-fucosides via highly stereoselective construction of α-L-galactosides followed by C6-deoxygenation2020

    • Author(s)
      Hirotaka Tomida、Takuya Matsuhashi、Hide-Nori Tanaka、Naoko Komura、Hiromune Ando、Akihiro Imamura、Hideharu Ishida
    • Journal Title

      Organic & Biomolecular Chemistry

      Volume: 18 Issue: 26 Pages: 5017-5033

    • DOI

      10.1039/d0ob01128b

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthesis of a 1,2-cis-indoxyl galactoside as a chromogenic glycosidase substrate2019

    • Author(s)
      Sakuto Nagata, Hirotaka Tomida, Haruka Iwai-Hirose, Hide-Nori Tanaka, Hiromune Ando, Akihiro Imamura, Hideharu Ishida
    • Journal Title

      RSC Advances

      Volume: 9 Issue: 48 Pages: 28241-28247

    • DOI

      10.1039/c9ra05797h

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] α-L-ガラクトシル化を鍵反応とする α-L-フコシド間接的合成法の開発2020

    • Author(s)
      今村彰宏、富田紘隆、松橋拓也、石田秀治
    • Organizer
      日本糖質学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] α-L-ガラクトシル化を基盤とするフコイダンの化学合成研究2020

    • Author(s)
      富田 紘隆、今村 彰宏、石田 秀治
    • Organizer
      日本農芸化学会
    • Related Report
      2019 Research-status Report
  • [Presentation] X-α-ガラクトシドの簡便合成法の開発2019

    • Author(s)
      富田 紘隆、長田 朔人、岩井 遥、今村 彰宏、石田 秀治
    • Organizer
      日本糖質学会
    • Related Report
      2019 Research-status Report
  • [Presentation] DTBS効果を応用した新規α-フコシド合成法の開発2018

    • Author(s)
      松橋拓也、今村彰宏、石田秀治
    • Organizer
      糖鎖科学中部拠点 第15回若手の力フォーラム
    • Related Report
      2018 Research-status Report
  • [Presentation] 新規合成戦略に基づくフコース含有糖鎖の構築2018

    • Author(s)
      松橋拓也、今村彰宏、石田秀治
    • Organizer
      日本農芸化学会2019年度大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Chemical synthesis of structurally complex gangliosides via unique synthetic approach2018

    • Author(s)
      Akihiro Imamura, Hiromune Ando, Hideharu Ishida
    • Organizer
      Sialoglyco2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2018-04-23   Modified: 2022-01-27  

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