Development and Characterization Colchicine-Loaded PEGylated Gelatin Nanoparticles for Targeted Delivery to Tumor
DOI:
https://doi.org/10.37285/ijpsn.2013.6.2.8Abstract
PEGylated gelatin nanoparticles loaded with colchicine were prepared by ethanol precipitation method. Poly-(ethylene glycol)-5000-monomethylether (MPEG 5000), a hydrophilic polymer, was used to pegylate gelatin. Gluteraldehyde was used as cross-linking agent. To obtain a high quality product, major formulation parameters were optimized. Spherical particles with mean particles of 193 nm were measured by a Malvern particle size analyzer. Entrapment efficiency was found to be 71.7 ± 1.4% and determined with reverse phase high performance liquid charomatography (RP-HPLC). The in vitro drug release study was performed by dialysis bag method for a period of 168 hours. Lyophilizaton study showed sucrose at lower concentrations proved the best cryoprotectant for this formulation. Stability study revealed that lyophilized nanoparticles were equally effective (p < 0.05) after one year of storage at 2-8°C with ambient humidity. In vitro antitumoral activity was accessed using the MCF-7 cell line by MTT assay. The IC50 value was found to be 0.034 μg/ml for the prepared formulation. The results indicate that PEGylated gelatin nanoparticles could be utilized as a potential drug delivery for targeted drug delivery of tumors.
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Keywords:
Nanoparticles, PEGylation, anticancer drug, colchicine, gelatin
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