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Nano-Sized Micelles of Block Copolymers of Methoxy Poly(ethylene glycol)-Poly(-caprolactone)-Graft-2-Hydroxyethyl Cellulose for Doxorubicin Delivery

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The amphiphilic block copolymers methoxy poly(ethylene glycol)-poly(-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 °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.


Document Type: Research Article


Publication date: May 1, 2008

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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