• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Diffusion-limited biosensing based on the porous electrode

Research Project

Project/Area Number 21H01961
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 34020:Analytical chemistry-related
Research InstitutionKyoto University

Principal Investigator

Kitazumi Yuki  京都大学, 農学研究科, 助教 (00579302)

Co-Investigator(Kenkyū-buntansha) 白井 理  京都大学, 農学研究科, 教授 (40355011)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2023: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Keywords酵素電極反応 / 酸化還元酵素 / 分子配向 / デジタルシミュレーション / バイオセンサ / 微小電極 / 拡散層 / 酵素機能電極 / 界面電荷移動 / 液液界面 / 多孔質電極 / 電気化学センサー / ギ酸脱水素酵素 / ビリルビンオキシダーゼ / 配向制御 / 参照電極 / 分子内電子伝達 / 酸素溶解速度 / 多孔質金 / 酵素内電子移動
Outline of Research at the Start

酸化還元酵素反応と電極反応の共役系は酵素電極反応として知られ、酵素と電極が直接電子授受を行う場合は直接電子移動型の酵素電極反応と呼ばれる。多孔質電極が酵素と電極間の電子授受において有利であることは広く知られているが、理論的な取扱いは進んでいない。そこで,多孔質構造の制御技術と酵素配向の解析技術、そして多孔質内部の物質輸送モデルを組み合わせ、多孔質電極上での酵素電極反応の理論的取り扱いを実現する。そして、酵素電極の出力向上における方法論を確立する。また、多孔質構造内の物質輸送によって応答が制御される再現性の高いバイオセンサーを開発する。

Outline of Final Research Achievements

Three-dimensional structures of several redox enzymes that have excellent electron transfer characteristics with electrodes are determined by cryo-electron microscopy. The results show the importance of the orientation of the enzyme on the electrode surface and the existence of aromatic amino acids within the enzyme to the electron transfer reaction between enzymes and electrodes. We also established a simple and effective method for protecting enzymes at the electrode surface from inactivation caused by heavy metal ions leaked from the reference electrode. Furthermore, we organized the guidelines of electrode design to improve the stability of microelectrode biosensors. We have also developed a simulation model that can uniformly formulate the electrochemical measurement system from the electrode surface to the bulk of the solution.

Academic Significance and Societal Importance of the Research Achievements

生体や環境モニタリングは近年ますます重要度を高めている。その中で、安定性が高く、都度校正の不要な電気化学バイオセンサの構築技術は必須のものである。本研究では、微小電極を用いた拡散律速型バイオセンサの開発を進めてきた。その中で、いかに酵素電極間の電子移動反応を加速するか、が重要であることはすでに知られていた。本研究によって電極との電位移動特性に優れた酵素の立体構造が明らかとなり、電極表面の分子配向と、酵素を構築するアミノ酸の配置の重要性が示された。この一般指針は今後のバイオセンサ開発に伴う酵素探索において欠くことのできないものである。

Report

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

    (19 results)

All 2024 2023 2022 2021 Other

All Journal Article (10 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 10 results,  Open Access: 5 results) Presentation (7 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Simulating ion transfer across a liquid?liquid interface and electrocapillarity based on the electrochemical potential of all ions in the system2024

    • Author(s)
      Kitazumi Yuki、Sowa Keisei、Shirai Osamu
    • Journal Title

      Journal of Electroanalytical Chemistry

      Volume: 960 Pages: 118209-118209

    • DOI

      10.1016/j.jelechem.2024.118209

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] An enhanced direct electron transfer-type NAD+/NADH regenerating system using the diaphorase subunit of formate dehydrogenase 12023

    • Author(s)
      Makizuka Taiki、Sowa Keisei、Katayama Shiori、Kitazumi Yuki、Yurimoto Hiroya、Sakai Yasuyoshi、Shirai Osamu
    • Journal Title

      Electrochimica Acta

      Volume: 465 Pages: 142954-142954

    • DOI

      10.1016/j.electacta.2023.142954

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Essential Insight of Direct Electron Transfer-Type Bioelectrocatalysis by Membrane-Bound <scp>d</scp>-Fructose Dehydrogenase with Structural Bioelectrochemistry2023

    • Author(s)
      Suzuki Yohei、Makino Fumiaki、Miyata Tomoko、Tanaka Hideaki、Namba Keiichi、Kano Kenji、Sowa Keisei、Kitazumi Yuki、Shirai Osamu
    • Journal Title

      ACS Catalysis

      Volume: 13 Issue: 20 Pages: 13828-13837

    • DOI

      10.1021/acscatal.3c03769

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Influence of distal glycan mimics on direct electron transfer performance for bilirubin oxidase bioelectrocatalysts2023

    • Author(s)
      Nishida Sayaka、Sumi Hinata、Noji Haruna、Itoh Akira、Kataoka Kunishige、Yamashita Satoshi、Kano Kenji、Sowa Keisei、Kitazumi Yuki、Shirai Osamu
    • Journal Title

      Bioelectrochemistry

      Volume: 152 Pages: 108413-108413

    • DOI

      10.1016/j.bioelechem.2023.108413

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Multiple electron transfer pathways of tungsten-containing formate dehydrogenase in direct electron transfer-type bioelectrocatalysis2022

    • Author(s)
      Yoshikawa, T; Makino, F; Miyata, T; Suzuki, Y; Tanaka, H; Namba, K; Kano, K; Sowa, K; Kitazumi, Y; Shirai, O
    • Journal Title

      CHEMICAL COMMUNICATIONS

      Volume: 58 Issue: 45 Pages: 6478-6481

    • DOI

      10.1039/d2cc01541b

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of N-linked glycans of bilirubin oxidase on direct electron transfer-type bioelectrocatalysis2022

    • Author(s)
      Suzuki Yohei、Itoh Akira、Kataoka Kunishige、Yamashita Satoshi、Kano Kenji、Sowa Keisei、Kitazumi Yuki、Shirai Osamu
    • Journal Title

      Bioelectrochemistry

      Volume: 146 Pages: 108141-108141

    • DOI

      10.1016/j.bioelechem.2022.108141

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Kinetic and thermodynamic analysis of Cu2+-dependent reductive inactivation in direct electron transfer-type bioelectrocatalysis by copper efflux oxidase2022

    • Author(s)
      Adachi Taiki、Mazurenko Ievgen、Mano Nicolas、Kitazumi Yuki、Kataoka Kunishige、Kano Kenji、Sowa Keisei、Lojou Elisabeth
    • Journal Title

      Electrochimica Acta

      Volume: 429 Pages: 140987-140987

    • DOI

      10.1016/j.electacta.2022.140987

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cyanide sensitivity in direct electron transfer-type bioelectrocatalysis by membrane-bound alcohol dehydrogenase from Gluconobacter oxydans2022

    • Author(s)
      Adachi Taiki、Sowa Keisei、Kitazumi Yuki、Shirai Osamu、Kano Kenji
    • Journal Title

      Bioelectrochemistry

      Volume: 143 Pages: 107992-107992

    • DOI

      10.1016/j.bioelechem.2021.107992

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inhibition of direct-electron-transfer-type bioelectrocatalysis of bilirubin oxidase by silver ions2022

    • Author(s)
      Makizuka Taiki、Sowa Keisei、Shirai Osamu、Kitazumi Yuki
    • Journal Title

      Analytical Sciences

      Volume: - Issue: 6 Pages: 907-912

    • DOI

      10.1007/s44211-022-00111-9

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Kinetic Analysis of Oxygen Dissolution by Bubble-attaching Electrodes2021

    • Author(s)
      ZUSHI Kento、KITAZUMI Yuki、SOWA Keisei、KANO Kenji、SHIRAI Osamu
    • Journal Title

      BUNSEKI KAGAKU

      Volume: 70 Issue: 9 Pages: 551-555

    • DOI

      10.2116/bunsekikagaku.70.551

    • NAID

      130008116858

    • ISSN
      0525-1931
    • Year and Date
      2021-09-05
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 酵素修飾金多孔質電極からの酵素除去及び電極再生2021

    • Author(s)
      中西聖嗣、北隅優希、加納健司、白井理
    • Organizer
      2021年電気化学秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 電気化学的手法に基づいた銀イオンによる酵素活性変化の速度論的解析とその抑止策の提案2021

    • Author(s)
      槇塚太紀,宋和慶盛,北隅優希,白井理
    • Organizer
      2021年電気化学秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 直接電子移動型酵素電極反応のpH応答に関する速度論的検討2021

    • Author(s)
      二階堂貴文、北隅優希、宋和慶盛、白井理
    • Organizer
      2021年電気化学秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 直接電子移動型酵素電極反応に基づく多孔質電極内部の物質輸送の評価2021

    • Author(s)
      北隅優希、宋和慶盛、白井理
    • Organizer
      第67回ポーラログラフィーおよび電気分析化学討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 参照電極からの溶出物による酵素電極活性低下に対する基礎的検討2021

    • Author(s)
      槇塚太紀、宋和慶盛、北隅優希、白井理
    • Organizer
      第67回ポーラログラフィーおよび電気分析化学討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Improvement of the Direct Electron Transfer-type Bioelectrocatalysis at the Porous Gold Electrodes and its Application for Biosensing2021

    • Author(s)
      Yuki Kitazumi, Keisei Sowa, Osamu Shirai
    • Organizer
      Materials Research Meeting2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Diffusion-limited electrochemical d-fructose sensor by a variant of d-fructose dehydrogenase2021

    • Author(s)
      Yohei Suzuki, Keisei Sowa, Yuki, Kitazumi, Osamu Shirai, and Kenji Kano Kano
    • Organizer
      Pacifichem2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Remarks] CO2資源化酵素の電子移動メカニズムを解明

    • URL

      https://www.kyoto-u.ac.jp/ja/research-news/2022-05-20-0

    • Related Report
      2022 Annual Research Report
  • [Patent(Industrial Property Rights)] バイオセンサ2024

    • Inventor(s)
      バイオセンサ
    • Industrial Property Rights Holder
      国立大学法人京都大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2024-024806
    • Filing Date
      2024
    • Related Report
      2023 Annual Research Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi