4.8 Article

Biodegradable DNA-Brush Block Copolymer Spherical Nucleic Acids Enable Transfection Agent-Free Intracellular Gene Regulation

Journal

SMALL
Volume 11, Issue 40, Pages 5360-5368

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201501573

Keywords

cellular uptake; DNA-brush block copolymers; gene regulation; micelles; spherical nucleic acids

Funding

  1. Center for Cancer Nanotechnology Excellence (CCNE) initiative of National Institutes of Health (NIH) [U54 CA119341, U54 CA151880]
  2. Dixon Translational Research Grants Initiative
  3. Defense Advanced Research Planning Agency [N66001-11-1-4189]
  4. Croucher Foundation

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By grafting multiple DNA strands onto one terminus of a polyester chain, a DNA-brush block copolymer that can assemble into micelle structure is constructed. These micelle spherical nucleic acids have a density of nucleic acids that is substantively higher than linear DNA block copolymer structures, which makes them effective cellular transfection and intracellular gene regulation agents.

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