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Bioassay sensor using stimuli-response of immobilized model cell membranes

Research Project

Project/Area Number 21K12283
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 64010:Environmental load and risk assessment-related
Research InstitutionWakayama National College of Technology

Principal Investigator

Morita Seiichi  和歌山工業高等専門学校, 生物応用化学科, 准教授 (70332054)

Co-Investigator(Kenkyū-buntansha) 土井 正光  和歌山工業高等専門学校, 生物応用化学科, 教授 (30217608)
西本 真琴  和歌山工業高等専門学校, 生物応用化学科, 准教授 (70609057)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsモデル細胞膜 / 脂質二分子膜 / バイオアッセイ / 環境評価 / バイオセンサー / 熱分析 / リポソーム / 刺激応答 / 環境毒性評価 / 農薬 / コラーゲンモデルペプチド
Outline of Research at the Start

本研究では、バイオアッセイセンサの開発のために、まず従来の生物個体や単一細胞などの生物材料を膜特性を明らかにしたリポソームなどのモデル細胞膜(脂質二分子膜)に置き換え、モデル細胞膜と農薬などの化学物質との相互作用によって誘導される膜透過性などの変化を刺激応答量として定量化し、環境毒性との相間により、モデル細胞膜の設計指針を確立する。次に、コラーゲンゲルなどを用いることによりセンサ電極上への刺激応答性を維持したリポソームの効果的な固定化方法および電気化学的手法などの導入により固定化リポソームの刺激応答量の簡便な測定法を検討する。

Outline of Final Research Achievements

The release kinetics of fluorescent substances encapsulated in spherical vesicles of lipid bilayers were measured in the presence of pesticides, and release kinetic parameters (release rate constant, initial rate of release) were calculated. Using the release kinetic parameters obtained from the bilayers with different degrees of unsaturation of the phospholipid acyl chains, we were able to obtain multiple regression equations to predict the toxicity of the six pesticides. Furthermore, thermal analysis of the interactions between the lipid bilayers and the pesticides was performed to infer the nature of the interactions. We also measured the basic properties of bilayers with branched acyl chains, and obtained guidelines for the design of new model cell membranes. On the other hand, for the immobilization of lipid bilayers, we investigated their embedding in gels on electrodes, but were unable to select an effective gel material.

Translated with www.DeepL.com/Translator (free version)

Academic Significance and Societal Importance of the Research Achievements

限定的ではあるが,脂質二分子膜-農薬間の相互作用に基づく農薬毒性の予測式が得られたことにより,生物や細胞を用いない簡便な毒性評価法を提示できた。また,熱分析によって溶解度の小さい農薬と分子集合体である脂質二分子膜との結合に関する熱力学パラメータを測定できたことは,農薬の二分子膜への分配位置や相互作用の解明に成果と考えられる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (9 results)

All 2024 2023 2022 2021

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (6 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Evaluating pesticide ecotoxicity using a stimuli-response model in liposomes2023

    • Author(s)
      Morita Seiichi、Sakai Chinatsu、Sakamoto Marika、Nishimoto Makoto
    • Journal Title

      JCIS Open

      Volume: 10 Pages: 100082-100082

    • DOI

      10.1016/j.jciso.2023.100082

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Quartz crystal microbalance sensor for the detection of collagen model peptides based on the formation of triple helical structure2022

    • Author(s)
      Fuji Sota、Tanaka Kotaro、Kishikawa Shiho、Morita Seiichi、Doi Masamitsu
    • Journal Title

      Journal of Bioscience and Bioengineering

      Volume: 133 Issue: 2 Pages: 168-173

    • DOI

      10.1016/j.jbiosc.2021.11.006

    • NAID

      210000159502

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of fatty acid from deep-sea microorganisms on lipid bilayer membrane fluidity under high pressure: comparison of branched-chain and polyunsaturated fatty acid2021

    • Author(s)
      Miura Kentaro、Ueno Hiroto.、Numa Yu、Morita Seiichi.、Nishimoto Makoto
    • Journal Title

      E3S Web of Conferences

      Volume: 322 Pages: 01019-01019

    • DOI

      10.1051/e3sconf/202132201019

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 分岐鎖脂肪酸が微生物生体膜流動性へ及ぼす影響2024

    • Author(s)
      上畑希穂,三浦健太郎,森田誠一,西本真琴
    • Organizer
      農芸化学会2024年度大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Evaluation of pesticide-lipid bilayer interactions for the assessment of toxicity2023

    • Author(s)
      S. Morita, R. Takiguchi, S. Nakaya, C. Sakai, M. Sakamoto, M. Nishimoto
    • Organizer
      ICOM2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 脂質二分子膜と疎水性物質の相互作用の熱力学的的検討2023

    • Author(s)
      瀧口莉央,中屋新太郎,森田誠一
    • Organizer
      第25回化学工学会学生発表会
    • Related Report
      2022 Research-status Report
  • [Presentation] 木守菜々子,糸川聖菜,森田誠一2023

    • Author(s)
      電気活性物質と脂質二分子膜を用いるバイオアッセイセンサ
    • Organizer
      第25回化学工学会学生発表会
    • Related Report
      2022 Research-status Report
  • [Presentation] Fabrication of collagen sensor based on the formation of triple helical structure2022

    • Author(s)
      Sota Fuji, Hoka Maeda, Shiho Norimura, Seiichi Morita, Masamitsu Doi
    • Organizer
      第27回高専シンポジウム(オンライン)
    • Related Report
      2021 Research-status Report
  • [Presentation] Effects of Fatty Acid on Lipid Bilayer Menmbrane Fluidity under High Pressure: comparison of Branched-Chain and Polyunsaturated Fatty acid,2021

    • Author(s)
      Kentaro Miura, Hiroto Ueno, Yu Numa, Seiichi Morita, Makoto Nishimoto
    • Organizer
      International Seminar on Fish and Fisheries (ISFFS) 2021, (Bogor and Bali (Virtual), Indonesia)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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Published: 2021-04-28   Modified: 2025-01-30  

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