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Precise coating of DNA origami nanostructures by 'template polymerization' method

Research Project

Project/Area Number 18K14270
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 35010:Polymer chemistry-related
Research InstitutionThe University of Tokyo

Principal Investigator

P. K. Hashim  東京大学, 大学院工学系研究科(工学部), 特任研究員 (40817277)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
KeywordsDNA nanostructure / Drug delivery system / Template polymerization / Adhesion / peptide conjugation / DNA origami / Nanostructure / Guanidinium ion / Click reaction / DNA Functionalization / DNA nanostructure / Molecular glue / click reaction / functionalization of DNA / Polymer coating / DNA origami structures / Drug Delivery system / in vivo stability of DDS
Outline of Final Research Achievements

For stabilization and functionalization of DNA-nanostructures, two macromonomers comprising guanidinium ion (Gu+) at their main chain or side chain, and azide units were synthesized. Upon mixing with a DNA origami 6-helix bundle, the macromonomers successfully adhered to the phosphate groups of exposed helices of DNA, however, the solubility of resulting macromonomer/origami conjugate was poor. The solubility issue was partly solved upon using the macromonomer with a more flexible backbone and benzophenone (BP) motif. We systematically investigated how the monomer interacts with DNA using a 40-base pair DNA. Our preliminary data also suggested that the glue coated 40-base pair DNA can be further functionalized with proteins.

Academic Significance and Societal Importance of the Research Achievements

我々はDNAナノ構造の被覆および機能化のため、DNAへの接着部位としてグアニジニウムイオン Gu+を有する分子の開発に取り組んでいます。 より簡単な構造である40塩基対のDNAを使用し、合成した分子とDNA間に働く相互作用について体系的な調査を行いました。DNAナノ構造はドラッグデリバリーシステムにおける輸送体として実用化が期待されていますが、血中で酵素による分解を急速に受けるため、DNAナノ構造の表面を被覆し生物学的な機能を付与することが必要です。 我々が開発してきた、Gu+含有分子を用いたDNAナノ構造の被覆・機能化の技術は、低毒性かつ血中で安定な輸送体の開発に貢献する可能性を有しています

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (4 results)

All 2020 2019 2018

All Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results) Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Supramolecular Polymerization: A Conceptual Expansion for Innovative Materials2020

    • Author(s)
      P.K Hashim, Julian Bergueiro, E.W. Meijer, Takuzo Aida
    • Journal Title

      Progress in Polymer Science

      Volume: 0 Pages: 101250-101250

    • DOI

      10.1016/j.progpolymsci.2020.101250

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Transferrin-Appended Nanocaplet for Transcellular siRNA Delivery into Deep Tissues2019

    • Author(s)
      Ai Kohata, P. K. Hashim, Kou Okuro, Takuzo Aida
    • Journal Title

      Journal of the American Chemical Society

      Volume: 141 Issue: 7 Pages: 2862-2866

    • DOI

      10.1021/jacs.8b12501

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Supramolecular Chemistry for Bio-applications: Designed Nanocarriers for Gene and Protein delivery2019

    • Author(s)
      P.K Hashim
    • Organizer
      India - Japan Symposium on Interdisciplinary S&T Innovations for Sustainable Society
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Coating and Functionalization of DNA-origami Nanostructure for Biomedical Applications2018

    • Author(s)
      P.K Hashim, Ai Kohata, Kou Okuro, Takuzo Aida
    • Organizer
      Annual Meeting of the Chemical Society of Japan
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2021-02-19  

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