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Protein function control starting from the pharmacophore skeleton of natural products for the development of new bioactive compounds

Research Project

Project/Area Number 20K05730
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 37020:Chemistry and chemical methodology of biomolecules-related
Research InstitutionOita University

Principal Investigator

Tsuchikawa Hiroshi  大分大学, 医学部, 特任講師 (30460992)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsアセチルコリン受容体 / スピロリド / ファーマコフォア / 化学合成 / アミノ酸側鎖 / 構造展開 / 側鎖 / 狂犬病ウイルス / Diels-Alder反応 / 不斉合成 / 競合結合実験 / 生理活性天然物 / ペプチド擬態 / 作用機構
Outline of Research at the Start

天然物は切れ味鋭い活性が魅力であるが、その構造の特殊性がしばしば化学生物学・創薬研究に必須な化学的アプローチを困難にしている。本研究では、天然物の「活性中心骨格」の簡便合成と、大分大学で展開する「ペプチド擬態技術」を融合することで課題を克服し、天然物の有能な特徴を保持する新規活性物質を創製することを目指す。本提案の完成は、生化学ツール分子や医薬品の開発に繋がり、さらには天然物化学の新規戦略となることが期待される。

Outline of Final Research Achievements

This study focused on the nicotinic acetylcholine receptor (nAChR), a membrane protein that plays a central role in neural activity, and its potent inhibitor, the marine natural product spirolides. Extracting the minimum structure (pharmacophore) required for biological activity from spirolide structure with a complex backbone, establishing a simple synthesis method, and conducting rapid lead exploration led to the proposal of a new method for drug discovery research on natural products.

Academic Significance and Societal Importance of the Research Achievements

本研究では、医薬品の基として有用な天然物の問題点(構造の特異性・複雑性)を、独自の観点および手法で解決することに成功した。これは、近年存在感が薄れつつある低分子医薬品開発の新しい手法となり得るため、現在主流となりつつある抗体やペプチド技術を利用した高分子医薬品から、低分子医薬品への回帰「リバースパラダイムシフト」の流れを生み出す可能性がある。さらには天然物化学の新規戦略となることも期待され、これら分野を横断するインパクトを与える成果を得たと考えている。

Report

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

    (7 results)

All 2022 2021 2020

All Journal Article (5 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] LnDOTA-d8 , a versatile chemical-shift thermometer for 2 H solid-state NMR2022

    • Author(s)
      Umegawa Yuichi、Shimonishi Takeshi、Tsuchikawa Hiroshi、Murata Michio
    • Journal Title

      Magnetic Resonance in Chemistry

      Volume: 60 Issue: 10 Pages: 1005-1013

    • DOI

      10.1002/mrc.5303

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Amphotericin B assembles into seven-molecule ion channels: An NMR and molecular dynamics study2022

    • Author(s)
      Umegawa Yuichi、Yamamoto Tomoya、Dixit Mayank、Funahashi Kosuke、Seo Sangjae、Nakagawa Yasuo、Suzuki Taiga、Matsuoka Shigeru、Tsuchikawa Hiroshi、Hanashima Shinya、Oishi Tohru、Matsumori Nobuaki、Shinoda Wataru、Murata Michio
    • Journal Title

      Science Advances

      Volume: 8 Issue: 24 Pages: 2658-2658

    • DOI

      10.1126/sciadv.abo2658

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Depth-Dependent Segmental Melting of the Sphingomyelin Alkyl Chain in Lipid Bilayers2022

    • Author(s)
      Tsuchikawa Hiroshi、Monji Mami、Umegawa Yuichi、Yasuda Tomokazu、Slotte J. Peter、Murata Michio
    • Journal Title

      Langmuir

      Volume: 38 Issue: 18 Pages: 5515-5524

    • DOI

      10.1021/acs.langmuir.2c00092

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of cholesterol on the lactosylceramide domains in phospholipid bilayers2022

    • Author(s)
      Hanashima Shinya、Ikeda Ryuji、Matsubara Yuki、Yasuda Tomokazu、Tsuchikawa Hiroshi、Slotte J. Peter、Murata Michio
    • Journal Title

      Biophysical Journal

      Volume: 121 Issue: 7 Pages: 1143-1155

    • DOI

      10.1016/j.bpj.2022.02.037

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Conformation and Orientation of Branched Acyl Chains Responsible for the Physical Stability of Diphytanoylphosphatidylcholine.2020

    • Author(s)
      Hiroshi Tsuchikawa, Takuya Ono, Masaki Yamagami, Yuichi Umegawa, Wataru Shinoda, Michio Murata
    • Journal Title

      Biochemistry

      Volume: 59 Issue: 40 Pages: 3929-3938

    • DOI

      10.1021/acs.biochem.0c00589

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Stereochemical determination of marine toxin spirolide homologues based on efficient synthesis of the 7,6-spirocyclic imine moiety2020

    • Author(s)
      Kou Minamino, Sho Hayashi, Michio Murata, Noriko Shimada Keiichi Konoki, Hiroshi Tsuchikawa
    • Organizer
      第62回天然有機化合物討論会
    • Related Report
      2020 Research-status Report
  • [Patent(Industrial Property Rights)] RSウイルス感染症の処置および/または予防用医薬としてのヘテロシクロアルキル置換ポリヘテロアゾール誘導体2021

    • Inventor(s)
      松岡 茂, 土川博史, 山田健太郎, 加藤明良
    • Industrial Property Rights Holder
      松岡 茂, 土川博史, 山田健太郎, 加藤明良
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • 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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