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Development of electrochemical gene detection method using small molecule ligand

Research Project

Project/Area Number 19K05534
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 34020:Analytical chemistry-related
Research InstitutionNational Defense Medical College

Principal Investigator

Takei Fumie  防衛医科大学校(医学教育部医学科進学課程及び専門課程、動物実験施設、共同利用研究施設、病院並びに防衛, 進学課程, 准教授 (30252711)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
KeywordsDNA / EIS / 電気化学 / 蛍光分子 / RNA / 核酸 / グラッシーカーボン / DNA特殊構造 / 小分子リガンド / PCR / DNA結合分子 / 炭素電極 / 遺伝子検出 / リガンド
Outline of Research at the Start

本課題研究では、申請者の独自技術であるDNAの特殊構造に特異的に結合する“小分子リガンド”を使った遺伝子蛍光検出法を基盤とした新しい電気化学的な手法を用いた生体分子計測法を構築する。インピーダンス(EIS)を用い、DNAと小分子リガンドの相互作用の変化を電気シグナルとして検出する方法の開発を目指す。開発した遺伝子検出法がDNA, RNAの定量的な検出に応用可能であることを示すため、1)小分子リガンドを固定化した電極の開発と基本原理の実証、2)遺伝子増幅反応組み合わせた高感度測定、3)21-25塩基長のmiRNAの検出法の確立、実証を行う

Outline of Final Research Achievements

We carried out experiments to develop a PCR monitoring system using electrochemical impedance spectroscopy (EIS) suitable for PCR with high salt concentration solutions.EIS usually uses [Fe(CN)6]3-/4- as a mediator, but to make this monitoring method even more sensitive A new EIS method using a 2,7-diaminonaphthyridine derivative (DANP), which specifically binds to the cytosine bulge structure of DNA, as a second mediator was investigated to make this monitoring method even more sensitive.
First, the effectiveness of DANP as a mediator was measured. The results showed that the EIS signal was reduced to 40% of that before the addition of DANP, indicating that DANP has sufficient capacity as a second mediator.
Furthermore, DNA with a cytosine bulge structure was detected by the EIS method, and the signal intensity changed significantly with the addition of DNA, suggesting that DNA with a cytosine bulge structure can be adequately detected by this method.

Academic Significance and Societal Importance of the Research Achievements

電気化学的な遺伝子検出法は、研究室レベルでは様々な方法が発表されているが、その多くはDNAそのもののターゲットDNA認識能、構造変化能を使ったものである。そのため、目的とする遺伝子ごとに検出用DNAプローブの合成・電極上への固定化が必要となり、簡便化されていない。本提案研究ではDNAの特殊構造に特異的に結合する“小分子リガンド”をセカンドメティエータとして使用することで、電極上にプローブ等の固定化をしなくてもDNAの検出ができることを明らかにした。これは今までの方法に比べて、簡単であり今後のDNAの検出技術へと応用でき学術的意義や社会的意義は大きい。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (17 results)

All 2023 2022 2021 2020 2019

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 1 results) Presentation (10 results) (of which Int'l Joint Research: 5 results,  Invited: 2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Ru Complex Ion Induces Anomalous Enhancement of Electrochemical Charge Transfer2023

    • Author(s)
      Han Huanwen、Nobusawa Kazuyuki、Takei Fumie、Chu Ting-Chieh、Hashida Noriyasu、Yamashita Ichiro
    • Journal Title

      Ruthenium - Materials Properties, Device Characterizations, and Advanced Applications

      Volume: 1 Pages: 1-13

    • DOI

      10.5772/intechopen.110360

    • ISBN
      9781803569864, 9781803569871
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Electrochemical Impedimetric Real-Time Polymerase Chain Reactions Using Anomalous Charge Transfer Enhancement2022

    • Author(s)
      Nobusawa Kazuyuki、Han Huan-Wen、Takei Fumie、Chu Ting-Chieh、Hashida Noriyasu、Yamashita Ichiro
    • Journal Title

      Analytical Chemistry

      Volume: 94 Issue: 22 Pages: 7747-7751

    • DOI

      10.1021/acs.analchem.2c01659

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Protective Effect of Luminal Uric acid Against Indomethacin-induced Enteropathy: Role of Antioxidant Effect and Gut Microbiota2021

    • Author(s)
      Wada A; Higashiyama M.; Kurihara C.; Ito S.; Tanemoto R.; Mizoguchi A.; Nishii S.;Inaba K.; Sugihara N.; Hanawa .Y; Horiuchi K.; Shibuya N.; Akiyama M.; Okada Y.; Watanabe C.; Komoto S.; Tomita K.; Takei F.; Hokari R.
    • Journal Title

      Digestive Diseases and Sciences.

      Volume: in press Issue: 1 Pages: 121-133

    • DOI

      10.1007/s10620-021-06848-z

    • Related Report
      2022 Research-status Report 2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] (1)High Allele Discrimination in the Typing of Single Nucleotide Polymorphisms of miRNA2021

    • Author(s)
      Fumie Takei, Misaki Akiyama, Minori Dateki
    • Journal Title

      Bioorg Med Chem

      Volume: 46 Pages: 116363-116369

    • DOI

      10.1016/j.bmc.2021.116363

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Hydrolytically Stable Monolayers Derived from Epoxy Silane2020

    • Author(s)
      Nobusawa, K; Sabani, N. B.; Takei, F.; Nakatani, K. and Yamashita I
    • Journal Title

      Chem. Lett.

      Volume: 49 Issue: 2 Pages: 129-132

    • DOI

      10.1246/cl.190700

    • NAID

      130007795063

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] RT‐Hpro‐PCR: A MicroRNA Detection System Using a Primer with a DNA Tag2019

    • Author(s)
      Takei Fumie、Akiyama Misaki、Murata Asako、Sugai Ayako、Nakatani Kazuhiko、Yamashita Ichiro
    • Journal Title

      ChemBioChem

      Volume: 21 Issue: 4 Pages: 477-480

    • DOI

      10.1002/cbic.201900382

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Development of new compounds using for SNP typing2023

    • Author(s)
      Fumie Takei, Naoki Yamada, Sumiyo Hiruma, Kaori Kamata,Ichiro Yamashita
    • Organizer
      ISNAC 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 新規ミスマッチ認識分子の創生とその特性2023

    • Author(s)
      武井 史恵、比留間 寿美代
    • Organizer
      日本化学会第104春季年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] DNAの構造変化と小分子リガンドを利用する遺伝子検出法2023

    • Author(s)
      武井史恵
    • Organizer
      産研テクノサロン
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Development of Electrochemical Detection of PCR products useing 2, 7-diamino-1,8-naphthyridine derivatives2022

    • Author(s)
      F. Takei, S. Hiruma, K. Kamata, I. Yamashita
    • Organizer
      ISNAC2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Detection of MicroRNAs with Similar Sequences Using Reverse-Transcription Hairpin-Probe Polymerase Chain Reaction2021

    • Author(s)
      Fumie Takei, Misaki Akiyama,Minoru Dateki
    • Organizer
      ISNAC 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] インピーダンス測定によるPCRのリアルタイムモニタリング2021

    • Author(s)
      韓 煥文、信澤 和行、武井 史恵、朱 鼎傑、 橋田 徳康、山下 一郎
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 一塩基配列が異なるmiRNAの蛍光検出法の開発2021

    • Author(s)
      武井史恵,秋山美沙紀,山下一郎
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] DNA, RNA に特異的に結合する分子の開発とその応用2021

    • Author(s)
      武井 史恵
    • Organizer
      174委員会講演会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Detection of similar sequence microRNA using RT-Hpro-PCR2019

    • Author(s)
      Fumie Takei, Misaki Akiyama
    • Organizer
      ISNAC2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of turn-on and turn-off type of PCR monitoring system using secondary structure change of DNA2019

    • Author(s)
      Fumie Takei
    • Organizer
      The first InternationalWorkshop by the 174th Committee JSPS on Symbiosis of Biology and Nanodevices
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] miRNA用プライマー及び該プライマーを用いた核酸増幅反応法2020

    • Inventor(s)
      武井史恵
    • Industrial Property Rights Holder
      武井史恵
    • Industrial Property Rights Type
      特許
    • Filing Date
      2020
    • Acquisition Date
      2020
    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2025-01-30  

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