Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 8, Issue 5, Pages 2362-2368Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2008.322
Keywords
drug delivery; methoxy poly(ethylene glycol); poly(epsilon-caprolactone); doxorubicin
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The amphiphilic block copolymers methoxy poly(ethylene glycol)-poly(epsilon-caprolactone) was grafted to 2-hydroxyethyl cellulose to produce the water-soluble copolymers. Doxorubicin loaded nanoparticles were prepared by dialysis method and the sizes of nanoparticles were determined by dynamic light scattering in solution and atomic force microscopes. As results the sizes were detected in a range of 197.4 to 340.7 nm. The in-vitro release of Dox was studied in phosphate and acetate buffered solution at 37 degrees C. The results showed that 43 and 53% of Dox remained after an incubation period of 7 days. The cytotoxicity of Dox loaded micelles was investigated in two different human MCF-7/wild type and MCF-7/Adriamycin drug resistant cells lines. The Dox-loaded micelles showed reduced cytotoxicity compared to free Dox in MCF-7/wild type and MCF-7/Adriamycin drug resistant cells.
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