AMP Aptamer Programs DNA Tile Cohesion without Canonical Base Pairing

J Am Chem Soc. 2023 Sep 13;145(36):19503-19507. doi: 10.1021/jacs.3c06260. Epub 2023 Aug 28.

Abstract

Tile-based DNA self-assembly provides a versatile approach for the construction of a wide range of nanostructures for various applications such as nanomedicine and advanced materials. The inter-tile interactions are primarily programmed by base pairing, particularly Watson-Crick base pairing. To further expand the tool box for DNA nanotechnology, herein, we have designed DNA tiles that contain both ligands and aptamers. Upon ligand-aptamer binding, tiles associate into geometrically well-defined nanostructures. This strategy has been demonstrated by the assembly of a series of DNA nanostructures, which have been thoroughly characterized by gel electrophoresis and atomic force microscopy. This new inter-tile cohesion could bring new potentials to DNA self-assembly in the future. For example, the addition of free ligand could modulate the nanostructure formation. In the case of biological ligands, DNA self-assembly could be related to the presence of certain ligands.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Base Pairing
  • DNA*
  • Ligands
  • Microscopy, Atomic Force
  • Oligonucleotides*

Substances

  • Ligands
  • DNA
  • Oligonucleotides