Triggered drug release from dynamic microspheres via a protein conformational change.

Abstract:

:In this study we formed and characterized dynamic hydrogel microspheres in which a protein conformational change was used to control microsphere volume changes and the release of an encapsulated drug. In particular, a specific biochemical ligand, trifluoperazine, induced calmodulin's nanometer scale conformation change, which translated to a 48.7% microsphere volume decrease. This specific, ligand-induced volume change triggered the release of a model drug, vascular endothelial growth factor (VEGF), at pre-determined times. After release from the microspheres, 85.6 +/- 10.5% of VEGF was in its native conformation. Taken together, these results suggest that protein conformational change could serve as a useful mechanism to control drug release from dynamic hydrogels.

journal_name

Macromol Biosci

authors

King WJ,Pytel NJ,Ng K,Murphy WL

doi

10.1002/mabi.200900382

subject

Has Abstract

pub_date

2010-06-11 00:00:00

pages

580-4

issue

6

eissn

1616-5187

issn

1616-5195

journal_volume

10

pub_type

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