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Precise design of biomimetic polymers with enhanced target binding avidity through the introduction of cyclic topology

Research Project

Project/Area Number 22K14728
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 35010:Polymer chemistry-related
Research InstitutionKyushu University

Principal Investigator

Nagao Masanori  九州大学, 工学研究院, 助教 (40904008)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2022: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords環状高分子 / 分子間相互作用 / 糖鎖高分子 / リビング重合 / タンパク質 / 糖鎖 / 運動性 / 合成高分子 / 生体分子間相互作用 / クリック反応 / 環化反応 / ガラス転移温度 / 緩和時間
Outline of Research at the Start

本研究では精密な重合法により合成高分子の構造を設計し、生体高分子のような優れた機能、とくに分子間での強い相互作用の発現を目指す。この目的のため、これまで行われてきたモノマー配列や分子量制御といった構造設計に加えて、新たに高分子の環状構造 (トポロジー設計) に着目した。運動性の低い環状構造を導入することにより、高分子の三次元的な構造を制御する。標的タンパク質の構造に対して最適に官能基が配置された合成高分子は、まるで抗体のように強い相互作用を発揮することが期待される。

Outline of Final Research Achievements

Throughout the research period, we successfully synthesized cyclic glycopolymers using living radical polymerization. Highly pure cyclic glycopolymers were obtained through a purification procedure. Evaluation of their physical properties using differential scanning calorimetry and NMR relaxation time revelated that cyclization of the polymer structures reduced their molecular mobility. The cyclization of the main chain weakened the interactions of glycopolymers with target proteins, indicating that the higher molecular mobility of the polymer main chain was favorable. On the other hand, in terms of the side chains, the lower mobility was preferable for the interactions. This research showed that the local mobility of polymers affects the function of molecular recognition, contributing to the development of synthetic polymers as nanomaterials. The research results were mainly published in two international papers.

Academic Significance and Societal Importance of the Research Achievements

合成高分子は日常生活においてプラスチック材料としてよく知られるが、分子レベルで見るとDNAやタンパク質といったナノサイズの大きさの生体高分子と同じスケールをもつ。タンパク質はアミノ酸が連なった構造をしており、アミノ酸の並び方によって決まったカタチをとり、酵素や抗体のような優れた機能を発揮している。本研究は人間がフラスコで作る合成高分子を天然の生体高分子のように精密に合成し、それらと同等もしくは凌駕する機能性ナノ材料を合成することを目指している。今回の研究成果は合成高分子のカタチを線形から環状にすることで分子同士の結合に影響を与えることを明らかにし、上述の目標達成に貢献した。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (14 results)

All 2024 2023 2022

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 5 results) Presentation (7 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Preparation of cellular membrane-mimicking glycopolymer interfaces by a solvent-assisted method on QCM-D sensor chips and their molecular recognition2024

    • Author(s)
      Masanori Nagao, Tsukuru Masuda, Madoka Takai, Yoshiko Miura
    • Journal Title

      Journal of Materials Chemistry B

      Volume: 12 Issue: 7 Pages: 1782-1787

    • DOI

      10.1039/d3tb02663a

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of Cyclic Glycopolymers Molecular Mobility on their Interactions with Lectins2024

    • Author(s)
      Wenkang Jin, Masanori Nagao, Yusuke Kumon, Hikaru Matsumoto, Yu Hoshino, Yoshiko Miura
    • Journal Title

      ChemPlusChem

      Volume: -

    • DOI

      10.1002/cplu.202400136

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Preparation of an amphipathic polymer library in a mixture of water/ethanol by photoinduced polymerization and evaluation of the cryoprotective activity2023

    • Author(s)
      Masanori Nagao, Shuya Tanaka, Yoshiko Miura
    • Journal Title

      Materials Advances

      Volume: 4 Issue: 15 Pages: 3192-3196

    • DOI

      10.1039/d3ma00251a

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Correlation between Self-Folding Behavior of Amphiphilic Polymers and Their Molecular Flexibility2023

    • Author(s)
      Masanori Nagao, Yoshiko Miura
    • Journal Title

      ACS Macro Letters

      Volume: 12 Issue: 6 Pages: 733-737

    • DOI

      10.1021/acsmacrolett.3c00182

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Design of Glycopolymers for Controlling the Interactions with Lectins2023

    • Author(s)
      M Nagao, H Matsumoto, Y Miura
    • Journal Title

      Chemistry-An Asian Journal

      Volume: 18 Issue: 19 Pages: 19-19

    • DOI

      10.1002/asia.202300643

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Continuous-Flow PET-RAFT Polymerization in a Packed-Bed Reactor with Porphyrin-Immobilized Silica Particles2023

    • Author(s)
      M Nagao, A Horie, H Matsumoto, Y Hoshino, Y Miura
    • Journal Title

      Industrial & Engineering Chemistry Research

      Volume: 63 Issue: 1 Pages: 200-209

    • DOI

      10.1021/acs.iecr.3c03496

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Synthesis of well-defined cyclic glycopolymers and the relationship between their physical properties and their interaction with lectins2022

    • Author(s)
      Nagao Masanori、Hoshino Yu、Miura Yoshiko
    • Journal Title

      Polymer Chemistry

      Volume: 13 Issue: 38 Pages: 5453-5457

    • DOI

      10.1039/d2py00941b

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] Synthesis of cyclic glycopolymer and evaluation of the interaction with target proteins2023

    • Author(s)
      WENKANG JIN, Masanori Nagao, Yoshiko Miura
    • Organizer
      第72回高分子学会年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Topological design of synthetic polymers for controlling the biomolecular recognition2023

    • Author(s)
      Masanori Nagao
    • Organizer
      第72回高分子学会年次大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] コレラ毒素を標的とした環状糖鎖高分子の精密合成と相互作用評価2023

    • Author(s)
      金 文康、長尾 匡憲、三浦 佳子
    • Organizer
      第72回高分子討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 環状糖鎖高分子の合成および標的タンパク質との相互作用評価2022

    • Author(s)
      金文康、長尾匡憲、星野友、三浦佳子
    • Organizer
      第71回 高分子学会年次大会
    • Related Report
      2022 Research-status Report
  • [Presentation] コレラ毒素認識能を持った環状糖鎖高分子の合成および相互作用評価2022

    • Author(s)
      金文康、長尾匡憲、三浦佳子
    • Organizer
      第59回化学関連支部合同九州大会
    • Related Report
      2022 Research-status Report
  • [Presentation] ガラクトースを用いた環状糖鎖高分子の合成および 標的タンパク質との相互作用評価2022

    • Author(s)
      金文康、長尾匡憲、三浦佳子
    • Organizer
      第71回 高分子討論会
    • Related Report
      2022 Research-status Report
  • [Presentation] Synthesis of cyclic glycopolymers and evaluation of the interaction with target proteins2022

    • Author(s)
      Wenkang Jin, Masanori Nagao, Yoshiko Miura
    • Organizer
      The 17th Pacific Polymer Conference
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2022-04-19   Modified: 2025-01-30  

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