Journal
JOURNAL OF MICROENCAPSULATION
Volume 30, Issue 2, Pages 181-188Publisher
INFORMA HEALTHCARE
DOI: 10.3109/02652048.2012.714411
Keywords
nanocapsules; nanocarrier; cancer therapy; docetaxel; polysaccharide; chitosan
Funding
- Spanish Ministry of Science and Technology [SAF 2004-08319-CO2-01]
- Consolider Nanobiomed [CSD 2006-00012]
- Spanish Government [AP2005-1701]
- Xunta de Galicia (Spain)
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This article describes the development of a freeze-dried formulation of chitosan (CS) nanocapsules containing docetaxel (DCX) and the evaluation of its efficacy in the NCI-H460 cancer cell line. More specifically, two prototypes of nanocapsules differing in their coating, CS alone or in combination with poloxamer 188 were developed using the solvent displacement technique. These prototypes (150nm and +45 mV) exhibited high encapsulation efficiencies of DCX (78%) and very similar release profiles. The nanocapsules made of solely CS could be freeze-dried and reconstituted without altering their particle size distribution. CS nanocapsules were tested for their ability to deliver intracellularly the anticancer drug DCX. The results showed that CS nanocapsules maintained the antiproliferative effect of the drug and that it was not affected by the freeze-drying process. Moreover, it was found that this cytostatic effect of DCX was related to its intracellular delivery in the cancer cells.
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