ABSTRACT
Purpose
To characterize and evaluate chitosan film containing PLGA nanoparticles (NPs) as a platform for localized dual-drug release.
Methods
Fluorescent Paclitaxel (FPTX), a hydrophobic drug, was incorporated into PLGA NPs. FPTX-loaded PLGA NPs and Carboxyfluorescein (CF), a hydrophilic model drug, were embedded into chitosan films. Release of CF and NPs from chitosan and release of FPTX from PLGA NPs were monitored by fluorescence. The stability of the platform was observed through SEM and dynamic light scattering (DLS).
Results
Chitosan films containing CF and FPTX-loaded PLGA NPs showed a biphasic release profile. In the first phase, 78% of CF and 34% of NPs were released within few days. In the second phase, the release was slower, showing an additional release of 22% of CF and 18% of NPs after 3 weeks. SEM images and DLS measurements showed that NP release depends on film degradation rate. FPTX-loaded PLGA NPs showed the release of 19.8% of total drug in 2 days, and no additional release was detected in the next 26 days.
Conclusions
The ability of chitosan film containing PLGA NPs to coat gold surface and to incorporate and release two different drugs of different hydrophilicity make it a promising platform for localized dual-drug release.
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ACKNOWLEDGEMENTS
The authors thank Dr. Bernard D. F. Casse, William Fowle and Electronic Materials Research Institute of Northeastern University for SEM images. This work was supported by the IGERT Nanomedicine Science and Technology Program (NSF-0504331) and Brigham Womens Hospital.
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Tada, D.B., Singh, S., Nagesha, D. et al. Chitosan Film Containing Poly(D,L-Lactic-Co-Glycolic Acid) Nanoparticles: A Platform for Localized Dual-Drug Release. Pharm Res 27, 1738–1745 (2010). https://doi.org/10.1007/s11095-010-0176-9
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DOI: https://doi.org/10.1007/s11095-010-0176-9