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Development of nucleic acid technology using ionic liquid compounds

Research Project

Project/Area Number 15K05575
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Bio-related chemistry
Research InstitutionKonan University

Principal Investigator

Nakano Shu-ichi  甲南大学, フロンティアサイエンス学部, 教授 (70340908)

Project Period (FY) 2015-10-21 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
KeywordsDNA / RNA / リボザイム / デオキシリボザイム / 構造安定性 / カチオン性分子 / イオン液体 / DNA四重鎖 / DNA鎖交換 / アルキルアンモニウムイオン / 塩基性タンパク質 / 静電相互作用 / 融解温度 / 塩基対部位
Outline of Final Research Achievements

We investigated the effects of cationic molecules composing ionic liquids on DNA and RNA structures. It was found that large cations have different binding properties from metal ions due to steric exclusion from structured regions. Particularly, large tetraalkylammonuin ions, such as tetrabutylammonium and tetrapentylammonium ions, decreased the stability of fully matched duplexes but increased the stability of DNA structures forming a long internal, bulge, or hairpin loop. The large cations also increased the stability of G-quadruplexes with long loops. Analysis of the thermodynamic parameters and the salt concentration dependence suggested binding of large cations to loop nucleotides but excluded from structured regions of DNA. It was also demonstrated that the rate of DNA strand replacement and catalytic rates of ribozymes and DNAzymes increased with the addition of large cations. These results provide insight into the application of ionic liquids for nucleic acid studies.

Academic Significance and Societal Importance of the Research Achievements

これまでは核酸研究にイオン液体を用いることが困難であったが、本研究によって核酸とイオン液体化合物の相互作用が明らかになり、イオン液体を核酸構造の制御や機能性核酸の機能向上に用いることが可能になった。核酸研究におけるイオン液体の有用性が示され、核酸テクノロジーにイオン液体を利用する道筋をつけることができた。また、機能性核酸を非水溶液環境に展開するための知見が得られたことから、本研究によって機能性核酸の用途が広がる可能性がある。核酸の構造と機能をイオン液体化合物によって制御する方法は汎用性が高く、様々な核酸研究に波及することが期待される。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (17 results)

All 2018 2017 2016 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (9 results) (of which Int'l Joint Research: 1 results) Remarks (5 results)

  • [Journal Article] Modulation of the ribozyme and deoxyribozyme activities using tetraalkylammonium ions2017

    • Author(s)
      S. Nakano, T. Watabe, and N. Sugimoto
    • Journal Title

      ChemPhysChem

      Volume: 18 Issue: 24 Pages: 3614-3619

    • DOI

      10.1002/cphc.201700882

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Catalytic activities of ribozymes and DNAzymes in water and mixed aqueous media2017

    • Author(s)
      S. Nakano, M. Horita, M. Kobayashi, and N. Sugimoto
    • Journal Title

      Catalysis

      Volume: 7 Issue: 12 Pages: 355-348

    • DOI

      10.3390/catal7120355

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Thermal stability of RNA structures with bulky cations in mixed aqueous solutions2016

    • Author(s)
      S. Nakano, Y. Tanino, H. Hirayama, and N. Sugimoto
    • Journal Title

      Biophys. J.

      Volume: 111 Issue: 7 Pages: 1350-1360

    • DOI

      10.1016/j.bpj.2016.08.031

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 嵩高いカチオン性分子による核酸の構造と機能の制御2018

    • Author(s)
      堀田政夫、森本隆太、鹿籠六真弘、鮎沢隼哉、杉本直己、中野修一
    • Organizer
      第12回バイオ関連シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] Increment in the thermal stability of G-quadruplexes with a long loop using bulky cations2018

    • Author(s)
      K. Tanabe, M. Horita, S. Morita, D. Miyoshi, N. Sugimoto, S. Nakano
    • Organizer
      第45回国際核酸化学シンポジウム
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Regulation of the structure and function of nucleic acids using bulky cationic compounds2018

    • Author(s)
      M. Horita, R. Morimoto, S. Kagoroku, H. Nakai, Sugimoto, S. Nakano
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Effects of bulky cations on the thermal stability of DNA G-quadruplexes with a long loop2018

    • Author(s)
      K. Tanabe, S. Nakano
    • Organizer
      Konan Research Summit
    • Related Report
      2018 Annual Research Report
  • [Presentation] 細胞内模倣環境における核酸と蛋白質の非特異的な相互作用の評価2017

    • Author(s)
      堀田政夫、森本隆太、中井大樹、杉本直己、中野修一
    • Organizer
      第11回バイオ関連シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] 細胞内模倣環境が促進させるDNAと塩基性タンパク質の非特異的相互作用2017

    • Author(s)
      堀田政夫、森本隆太、中井大樹、杉本直己、中野修一
    • Organizer
      第40回日本分子生物学会年会
    • Related Report
      2017 Research-status Report
  • [Presentation] 嵩高いカチオン性物質共存下における核酸の構造安定性2017

    • Author(s)
      森本隆太・中井大樹・鮎沢隼哉・谷野裕一・杉本直己・中野修一
    • Organizer
      日本化学会 第97春季年会
    • Place of Presentation
      慶應義塾大学日吉キャンパス(神奈川県横浜市)
    • Related Report
      2016 Research-status Report
  • [Presentation] RNA酵素の活性を向上させる方法の開発2016

    • Author(s)
      山下博史、小林未来、田辺和也、杉本直己、中野修一
    • Organizer
      第10回バイオ関連化学シンポジウム
    • Place of Presentation
      石川県立音楽堂、もてなしドーム地下イベント広場(石川県金沢市)
    • Related Report
      2016 Research-status Report
  • [Presentation] DNAの安定性を評価するための新規モデル実験系の構築2016

    • Author(s)
      森本隆太・中野修一
    • Organizer
      第7回生命機能研究会
    • Place of Presentation
      同志社大学寒梅館室町キャンパス(京都府京都市)
    • Related Report
      2016 Research-status Report
  • [Remarks] バイオ分子機構研究室ホームページ

    • URL

      http://www.konan-u.ac.jp/hp/FIRST_bmflab/Hojyokin_reports.html

    • Related Report
      2018 Annual Research Report
  • [Remarks] 甲南大学バイオ分子機能研究室

    • URL

      http://www.konan-u.ac.jp/hp/FIRST_bmflab/Hojyokin_reports.html

    • Related Report
      2017 Research-status Report
  • [Remarks] 甲南大学フロンティアサイエンス学部生命化学科バイオ分子機能研究室

    • URL

      http://www.konan-u.ac.jp/hp/FIRST_bmflab/

    • Related Report
      2016 Research-status Report
  • [Remarks] バイオ分子機能研究室

    • URL

      http://www.kcc.zaq.ne.jp/konan1st_bmflab/

    • Related Report
      2015 Research-status Report
  • [Remarks] 補助金研究報告

    • URL

      http://www.kcc.zaq.ne.jp/konan1st_bmflab/Hojyokin_reports.html

    • Related Report
      2015 Research-status Report

URL: 

Published: 2015-10-21   Modified: 2020-03-30  

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