Delivery of nucleic acid complexes from materials including negatively charged groups
AssigneeSurModics, Inc.
InventorsJoseph Schmidt McGonigle, Aron Brent Anderson
Life of this patent
Estimating the term…
Abstract
Embodiments of the invention include devices and methods for the controlled elution of nucleic acid delivery complexes. In an embodiment, the invention includes a medical device including a substrate surface, a polymeric coating disposed on the surface, the polymeric coating coupled to the substrate surface through the reaction product of a photoreactive group; the polymeric coating comprising negatively charged species on the surface; and a plurality of nucleic acid delivery complexes disposed on the polymeric coating, the nucleic acid delivery complexes comprising a nucleic acid and a cationic carrier agent complexed to the nucleic acid. Other embodiments are included herein.
Claims23
A medical device comprising:
- a substrate surface;
- a polymeric coating disposed on the surface, the polymeric coating coupled to the substrate surface through the reaction product of a photoreactive group;
- the polymeric coating comprising negatively charged species on the surface;
- and
- a plurality of nucleic acid delivery complexes disposed on the polymeric coating, the nucleic acid delivery complexes comprising a nucleic acid and a cationic carrier agent complexed to the nucleic acid.
A medical device comprising:
- a polymeric matrix comprising a polymer with anionic groups;
- a plurality of nucleic acid delivery complexes disposed within the polymeric matrix, the nucleic acid delivery complexes comprising a nucleic acid and a carrier agent complexed to the nucleic acid.
A method of controlling the release rate of nucleic acid delivery complexes comprising:
- modulating the charge density of a drug delivery matrix, the drug delivery matrix comprising a polymer and nucleic acid delivery complexes electrostatically held to the drug delivery matrix.
Dependencies are inferred from the claim text.