Journal
BIOMATERIALS
Volume 26, Issue 33, Pages 6754-6761Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biomaterials.2005.04.022
Keywords
DNA delivers; dendritic cell; nanoparticle; cationic peptide; oligonucleotide
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The aim of this study is to evaluate a novel microspheric vector for delivery of oligonucleotides (ODN) into dendritic cells (DC). A requirement of decoy-based modulation of transcriptional activities ill DC is that the ODN would ha c to accumulate inside the cell, Using an ex vivo DC culture model. we demonstrate that anionic microspheres (MS) coated with an ornithine histadine-based cationic peptide (O10H6) is an effective carrier of short ODN. This method does not disrupt the colloidal nature of the microspheric particles. The MS provide stabilizing effect on DNA and O10H6 complexation. Accumulation of ODN in DC is greatly enhanced with the Surface modified MS. Taken together, these data demonstrate that the self assembly System of MSO10H6 is an effective delivery vehicle for DNA-based modulation of DC functions. (c) 2005 Elsevier Ltd. All rights reserved.
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