Photoresponsive DNA nanocapsule having an open/close system for capture and release of nanomaterials

Tomohiro Takenaka, Masayuki Endo, Yuki Suzuki, Yangyang Yang, Tomoko Emura, Kumi Hidaka, Takayuki Kato, Tomoko Miyata, Keiichi Namba, Hiroshi Sugiyama

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

A photofunctionalized square bipyramidal DNA nanocapsule (NC) was designed and prepared for the creation of a nanomaterial carrier. Photocontrollable open/ close system and toehold system were introduced into the NC for the inclusion and release of a gold nanoparticle (AuNP) by photoirradiation and strand displacement. The reversible open and closed states were examined by gel electrophoresis and atomic force microscopy (AFM), and the open behavior was directly observed by high-speed AFM. The encapsulation of the DNA-modified AuNP within the NC was carried out by hybridization of a specific DNA strand (capture strand), and the release of the AuNP was examined by addition of toehold-containing complementary DNA strand (release strand). The release of the AuNP from the NC was achieved by the opening of the NC and subsequent strand displacement.

Original languageEnglish
Pages (from-to)14951-14954
Number of pages4
JournalChemistry - A European Journal
Volume20
Issue number46
DOIs
Publication statusPublished - 2014 Nov 10
Externally publishedYes

Keywords

  • DNA origami
  • DNA structures
  • Gold nanoparticles
  • Photocontrol
  • Strand displacement

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry

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