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Related Concept Videos

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Related Experiment Video

Updated: Apr 12, 2026

Preparation of Mica and Silicon Substrates for DNA Origami Analysis and Experimentation
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Designed Intercalators for Modification of DNA Origami Surface Properties.

Josipa Brglez1, Pavel Nikolov1, Alessandro Angelin1

  • 1Karlsruhe Institute of Technology (KIT), Institute for Biological Interfaces (IBG 1), Hermann-von-Helmholtz-Platz, 76344 Eggenstein-Leopoldshafen (Germany).

Chemistry (Weinheim an Der Bergstrasse, Germany)
|May 15, 2015
PubMed
Summary

Researchers modified DNA origami nanostructures using intercalators. This altered their surface properties and cellular uptake, offering a new way to tailor nanostructures for various applications.

Keywords:
DNA nanostructuresintercalatorsnucleic acidsself-assemblysurface binding

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Area of Science:

  • Biotechnology
  • Nanotechnology
  • Materials Science

Background:

  • DNA origami nanostructures are versatile nanoscale tools.
  • Modifying their surface properties is crucial for targeted applications.
  • Noncovalent interactions offer a promising strategy for surface functionalization.

Purpose of the Study:

  • To investigate the noncovalent modification of DNA origami nanostructures using designed intercalators.
  • To assess the impact of intercalator binding on the structural integrity and surface properties of DNA origami.
  • To evaluate the effect of these modifications on the cellular uptake of DNA nanostructures.

Main Methods:

  • Synthesis of acridine-based intercalators with fatty acid or oligo(ethylene glycol) side chains.
  • Spectroscopic analyses (e.g., UV-Vis, fluorescence) to confirm intercalator binding to DNA origami.
  • Atomic force microscopy (AFM) to study structural intactness and surface property changes.
  • Confocal microscopy to analyze cellular uptake in eukaryotic cell lines.

Main Results:

  • Intercalators successfully bind to DNA origami nanostructures.
  • Binding does not compromise the structural integrity of the nanostructures.
  • Surface properties are altered, affecting interactions with support materials (mica, graphite).
  • Cellular uptake is significantly modified in tested eukaryotic cell lines.

Conclusions:

  • Noncovalent interaction with designed intercalators is an effective method for modifying DNA origami nanostructures.
  • This approach allows for tuning surface properties without affecting structural integrity.
  • Altered surface properties influence cellular interactions and uptake.
  • The intercalator strategy provides a versatile tool for tailoring DNA nanostructures for biomedical and biotechnological applications.