期刊
JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
卷 17, 期 12, 页码 1389-1403出版社
TAYLOR & FRANCIS LTD
DOI: 10.1163/156856206778937217
关键词
nanoparticles; dendritic cells; non-viral DNA vector; endosome escape
We report the formulation of particles to deliver oligodeoxynucleotides (ODN) into primary murine dendritic cells (DCs), the most potent antigen-presenting cells (APCs) known, using poly(D,L-lactic-co-glycolic acid) (PLGA) and a small cationic peptide. PLGA polymer and the ODN were fabricated into nano-sized spherical particles with the aid of O10H6 (O = ornithine, H = histidine). We have previously determined that O1OH6 condenses DNA and is less toxic to DCs than a similar lysine-based peptide. The colloidal particles are stabilized by negative surface potentials. The peptide and the ODN can be detected in the fabricated particles with reflectance infrared spectroscopy. Significant ODN uptake can be observed in DCs exposed to the particles. Confocal imaging studies reveal that ODN can be internalized and escape from lysosomes in DCs. Taken together, these data suggest that combining PLGA and O1OH6 is a feasible method to generate ODN-containing nano-sized particles for applications in DCs.
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