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Development of AFM-based quadruplex DNA detection method using data science technology

Research Project

Project/Area Number 20K06504
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 43020:Structural biochemistry-related
Research InstitutionYokohama National University

Principal Investigator

Tanaka Yoichiro  横浜国立大学, 研究推進機構, 技術専門職員 (70450426)

Co-Investigator(Kenkyū-buntansha) 永田 崇  京都大学, エネルギー理工学研究所, 准教授 (10415250)
杉本 千佳  横浜国立大学, 大学院工学研究院, 准教授 (40447347)
荻野 俊郎  横浜国立大学, 研究推進機構, 非常勤講師 (70361871)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsグアニン四重鎖 / AFM / データサイエンス / 機械学習 / NMR / G-quadruplex / 四重鎖DNA / SPM
Outline of Research at the Start

DNAの特殊な構造の一つであるグアニン四重鎖構造がヒトゲノム上に多数存在し、がん等の疾病の治療のターゲットになり得る事が分かってきており、実際に疾病と関連する四重鎖を迅速に明らかにする事が重要な課題である。本研究では、四重鎖構造を直接検出可能な原子間力顕微鏡(AFM)によって、一度に多数のDNA分子を測定してデータサイエンスの手法で統計的に処理し、分子構造を基盤とした新しい四重鎖同定法を確立する。さらに、四重鎖が疾病の原因となるメカニズムを解明するため、四重鎖と蛋白質の相互作用測定法を同様の手法で確立する。

Outline of Final Research Achievements

In this study, we used atomic force microscopy (AFM) as a measurement method that can directly detect quadruplex structure, and measured the particle forms of many DNA molecules fixed on a mica surface to obtain the surface shape parameters of each molecule. By identifying the unique parameters of quadruplex DNA by machine learning, we established a new measurement method to discriminate quadruplexes at high speed by AFM measurement.
As a result of the evaluation of unknown quadruplex DNA in the E. coli genome using the established quadruplex discrimination method, it was confirmed that the DNA detected as a quadruplex by our method formed a quadruplex by NMR and electrophoresis experiments. Based on these results, we constructed a method to detect quadruplexes rapidly by AFM measurement.

Academic Significance and Societal Importance of the Research Achievements

近年、DNAの特殊な構造の一つであるグアニン四重鎖構造がヒトゲノム上に多数存在し、疾病の治療ターゲットになり得る事が分かってきた。どのような配列が実際に四重鎖を形成し、疾病と関連しているかを解明することが喫緊の課題である。そのためには、四重鎖形成が推定される多数のDNA配列を高速に解析し、実験的に四重鎖構造の形成を判別する必要がある。本研究では、比較的安価に原子レベルの形状情報を得られる原子間力顕微鏡(AFM)を使用し、DNAの四重鎖形成を高速に同定可能な方法を開発した。得られた結果は実験的なデータに基づいており、疾病の原因となる四重鎖の同定等に高い能力を持つことが期待される。

Report

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

    (9 results)

All 2024 2023 2022 2021 2020

All Presentation (9 results) (of which Int'l Joint Research: 6 results,  Invited: 3 results)

  • [Presentation] 応用電子物性と周辺分野、工学、そして異分野との融合2024

    • Author(s)
      荻野 俊郎、田中 陽一郎、杉本 千佳
    • Organizer
      第71回応用物理学会春期学術講演会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] AFM-based G-quadruplex Detection Using Machine Learning2023

    • Author(s)
      Chika Sugimoto, Yoichiro Tanaka, Toshio Ogino
    • Organizer
      45th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Identification of quadruplexes that can regulate gene expression2023

    • Author(s)
      Yoichiro Tanaka, Takashi Nagata and Chika Sugimoto
    • Organizer
      The 14th International Symposium of Advanced Energy Science
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Identification of quadruplexes that can regulate gene expression.2022

    • Author(s)
      Tanaka Y., Nagata T., Sugimoto, C., Ogino T.
    • Organizer
      The 13th International Symposium of Advanced Energy Science
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of AFM-based G-quadruplex DNA detection method using data science technology.2022

    • Author(s)
      Tanaka Y., Nagata T., Sugimoto, C., Ogino T.
    • Organizer
      15th International Symposium on Nanomedicine (ISNM2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Identification of quadruplexes that can regulate gene expression.2021

    • Author(s)
      Tanaka Y., Nagata T., Ogino T.
    • Organizer
      The 12th International Symposium of Advanced Energy Science
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 原子間力顕微鏡による機械学習を使用した簡便な四重鎖DNA判別法の開発2021

    • Author(s)
      田中 陽一郎、永田 崇、杉本 千佳、荻野 俊郎
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Research-status Report
  • [Presentation] Elucidation of correlation between G-quadruplex-based gene expression regulation and their structure.2020

    • Author(s)
      Y. Tanaka, T. Nagata, and T. Ogino
    • Organizer
      The 11th International Symposium of Advanced Energy Science
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] データサイエンスを活用した生体物質の特徴抽出2020

    • Author(s)
      荻野俊郎, 田中陽一郎, 杉本千佳, 伊藤和希
    • Organizer
      応用物理学会東海支部基礎セミナー
    • Related Report
      2020 Research-status Report
    • Invited

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Published: 2020-04-28   Modified: 2025-01-30  

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