Journal
CARBOHYDRATE POLYMERS
Volume 94, Issue 2, Pages 850-856Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2013.02.018
Keywords
Immuno-chemotherapy; Acetylated fucoidan; Anti-tumor cytokines; Multidrug resistance
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Funding
- Korean Ministry of Education, Science and Technology through Strategic Research [2011-0028726]
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In order to develop immuno- and chemotherapy agents, self-organized acetylated fucoidan (AcFu) nanoparticles were designed. Doxorubicin (DOX), used as a model drug, was loaded into the AcFu nanoparticles by dialysis. The DOX loading efficacy and content were 71.1% and 3.6%, respectively. Approximately 140 nm of spherical nanoparticles were obtained. DOX-loaded AcFu nanoparticles (DOX-AcFu) exhibited first-order drug release behavior for 5 days. Interestingly, AcFu treated Raw264.7 macrophages overexpressed various anti-tumor cytokines, such as tumor necrosis factor-alpha (TNF-alpha) and granulocyte-macrophage colony-stimulating factor (GM-CSF). The ability of DOX-AcFu to suppress drug efflux was revealed by confocal microscope images and FACS analysis in multidrug resistance (MDR) cells. IC50 (50% inhibitory concentration) value of DOX-AcFu was lower than that of free DOX in the MDR model cells. Based on these results, we strongly suggest that AcFu nanoparticles have a promising potential for development as a one-step therapy containing agents for both immuno- and chemotherapy. (C) 2013 Elsevier Ltd. All rights reserved.
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