Lipid Nanocapsules for Intracellular Drug Delivery of Anticancer Drugs
Authors: Lacoeuille, Franck; Garcion, Emmanuel; Benoit, Jean-Pierre; Lamprecht, Alf
Source: Journal of Nanoscience and Nanotechnology, Volume 7, Number 12, December 2007 , pp. 4612-4617(6)
Publisher: American Scientific Publishers
Abstract:As non-phagocytic eukaryotic cells can internalize particles <1 m in size, small size (25 to 110 nm) lipid nanocapsules (LNC) are proposed for the intracellular drug delivery of anticancer drugs to cancer cells. LNC ofdifferent diameters were loaded with etoposide or paclitaxel and subsequently tested for drug release kinetics and their efficiency to reduce cancer cell growth in cell culture. Relative high drug loads could be achieved and sustained drug release can be provided over a period ofseveral days (etoposide) up to a few weeks (paclitaxel). While particle size exhibited only minor influences on the release kinetics, higher initial drug load led to a distinctly lower burst release. In a cancer cell culture model, etoposide or paclitaxel LNC showed a 4-fold or 40-fold higher efficiency, respectively than the drug solution while blank LNC were found to be less toxic than the pure drug at equivalent concentrations. The uptake and intracellular accumulation ofLNC was confirmed by confocal laser scanning microscopy after fluorescence labeling of the nanocarriers. This nanoparticulate system is able to achieve efficient intracellular drug concentrations and seems to be therefore a promising therapeutic approach in cancer treatment.
Document Type: Research Article
Publication date: December 1, 2007
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