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Development of a novel dual stimulus-responsive hydrogel using polyglutamic acid

Research Project

Project/Area Number 20K15343
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 35020:Polymer materials-related
Research InstitutionOsaka University

Principal Investigator

Hsu Yu-I  大阪大学, 工学研究科, 助教 (10757678)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsポリ(γ-グルタミン酸) / 注射可能なヒドロゲル / 自己修復 / 生分解性 / 組織工学 / ポリ-γ-グルタミン酸 / 注射可能なハイドロゲル / 酵素架橋 / ディールスアルダー反応 / デュアル刺激応答性 / 自己修復性 / ハイドロゲル / ポリグルタミン酸 / 温度応答性 / 酵素応答性
Outline of Research at the Start

本研究では生体応用できる刺激応答性ハイドロゲルを創出するため、主基材として納豆由来の生分解性高分子ポリ-γ-グルタミン酸(PGA)を用いて、側鎖に機能団を導入する。異なる機能団を導入することにより、デュアル刺激応答性ハイドロゲル前駆体は異なる環境に応じてゲル化できる。生体内で応用しやすい温度応答性と酵素応答性の機能団を導入し、温度応答性により瞬時ゲル化した後、酵素反応によりハイドロゲルの機械的強度を制御できるように設計する。このようなデュアル刺激応答性ハイドロゲルの前駆体構造や硬化条件を変えることでゲル強度を自在に制御し、広範囲に利用できるインジェクタブル細胞スキャホールドへの応用を目指す。

Outline of Final Research Achievements

To utilize the stimulus-responsive gel in the medical field and environment-related fields, it is important to develop a stimulus-responsive gel that recognizes a signal molecule to change its volume. Since the mechanical strength is different for each tissue in the living body, it is necessary to develop a hydrogel having controllable mechanical strength to applicate to each tissue. In this study, stimulus-responsive hydrogels were developed based on poly-γ-glutamic acid (PGA) produced by Bacillus subtilis var. natto and aim to apply it to injectable cell scaffolds. By introducing various functional groups on the PGA main chain, injectable hydrogels having controllable gelation time and gel strength, good degradation behavior, peptide release behavior, and bioadhesion were developed.

Academic Significance and Societal Importance of the Research Achievements

本研究ではPGAを基盤とした新規デュアル刺激応答性ハイドロゲルを創出する。温度応答性と酵素応答性を搭載したPGAゲル前駆体は申請者独自の発想であり、導入した機能性分子の導入率あるいは刺激条件を制御することにより、ハイドロゲルのゲル化時間とゲルの機械的強度を簡単に制御できた。また、酵素応答と温度応答のデュアル刺激応答ハイドロゲルは中性領域で細胞に影響の少ない添加剤(ビスマレイミド)と酵素の添加や多少の加温でゲル化時間と機械的強度が制御できる。側鎖にカルボン酸を有するPGAを主鎖とすることで生分解性機能とゲル化時間・ゲル強度の制御機能を共にスキャホールドに搭載できる点も大きな特徴である。

Report

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

    (12 results)

All 2022 2021

All Journal Article (5 results) (of which Peer Reviewed: 2 results) Presentation (7 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results)

  • [Journal Article] Design of Injectable Poly(γ-glutamic acid)/Chondroitin Sulfate Hydrogels with Mineralization Ability2022

    • Author(s)
      Wei Meng、Hsu Yu-I、Asoh Taka-Aki、Sung Moon-Hee、Uyama Hiroshi
    • Journal Title

      ACS Applied Bio Materials

      Volume: 5 Issue: 4 Pages: 1508-1518

    • DOI

      10.1021/acsabm.1c01269

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Preparation of pH-Responsive Poly(γ-glutamic acid) Hydrogels by Enzymatic Cross-Linking2022

    • Author(s)
      Wei Meng、Inoue Tomonori、Hsu Yu-I、Sung Moon-Hee、Fukuoka Tokuma、Kobayashi Shiro、Uyama Hiroshi
    • Journal Title

      ACS Biomaterials Science & Engineering

      Volume: 8 Issue: 2 Pages: 551-559

    • DOI

      10.1021/acsbiomaterials.1c01378

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Poly(methyl methacrylate) surface grafted with poly(2-ethyl-2-oxazoline) using tea polyphenol as linker molecule2022

    • Author(s)
      Wen Hanyu、Hsu Yu-I、Asoh Taka-Aki、Uyama Hiroshi
    • Journal Title

      Progress in Organic Coatings

      Volume: 166 Pages: 106796-106796

    • DOI

      10.1016/j.porgcoat.2022.106796

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Superhydrophobic PDMS-pCA@CNWF Composite with UV-Resistant and Self-Cleaning Properties for Oil/Water Separation2022

    • Author(s)
      Wen Hanyu、Hsu Yu-I、Uyama Hiroshi
    • Journal Title

      Materials

      Volume: 15 Issue: 1 Pages: 376-376

    • DOI

      10.3390/ma15010376

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Injectable poly(γ-glutamic acid)-based biodegradable hydrogels with tunable gelation rate and mechanical strength2021

    • Author(s)
      Wei Meng、Hsu Yu-I、Asoh Taka-Aki、Sung Moon-Hee、Uyama Hiroshi
    • Journal Title

      Journal of Materials Chemistry B

      Volume: 9 Issue: 16 Pages: 3584-3594

    • DOI

      10.1039/d1tb00412c

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Development of Injectable Dual Stimulus-Responsive Hydrogel Using Biodegradable Poly(γ-glutamic acid)2022

    • Author(s)
      Yu-I Hsu, Meng Wei, Taka-Aki Asoh, Moon-Hee Sung and Hiroshi Uyama
    • Organizer
      Joint Symposium sponsored by the Japanese Society for Biomaterials and the Society For Biomaterials
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of Self-Healing Poly(γ-glutamic acid) / Chondroitin Sulfate Hydrogels with In Situ Mineralization Ability2022

    • Author(s)
      Meng Wei, Yu-I Hsu, Taka-Aki Asoh, Moon-Hee Sung, Hiroshi Uyama
    • Organizer
      Joint Symposium sponsored by the Japanese Society for Biomaterials and the Society For Biomaterials
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Injectable poly(γ-glutamic acid)-based biodegradable hydrogels with tunable gelation rate and mechanical strength2021

    • Author(s)
      Yu-I Hsu, Meng Wei, Taka-Aki Asoh, Moon-Hee Sung and Hiroshi Uyama
    • Organizer
      the 8th Asian Biomaterials Congress
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of injectable poly(γ-glutamic acid) / chondroitin sulfate hydrogels with self-healing property2021

    • Author(s)
      Meng Wei, Yu-I Hsu, Taka-Aki Asoh, Moon-Hee Sung, Hiroshi Uyama
    • Organizer
      the 8th Asian Biomaterials Congress
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ポリグルタミン酸を用いた注射可能なデュアル刺激応答性ヒドロゲルの開発2021

    • Author(s)
      徐 于懿・魏 夢・麻生 隆彬・宇山 浩
    • Organizer
      第50回医用高分子シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] Development of stimulus-responsive hydrogels using bio-based biodegradable polymers2021

    • Author(s)
      Yu-I Hsu
    • Organizer
      48th Annual Meeting & International Symposium of The Korean Society for Microbiology and Biotechnology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ポリグルタミン酸を用いた注射可能なデュアル刺激応答性ヒドロゲル2021

    • Author(s)
      徐 于懿, 魏 夢, 麻生 隆彬, 宇山 浩
    • Organizer
      第50回医用高分子シンポジウム
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2023-01-30  

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