Abstract
The objective of this study was to develop novel docetaxel phospholipid nanoparticles (NDPNs) for intravenous administration. Modified solvent diffusion-evaporation method was adopted in the NDPN preparation. Central composite design (CCD) was employed in the optimization of the critical formulation factor (drug content) and process variable (stirring rate) to obtain NDPNs with 215.53 ± 1.9-nm particle size, 0.329 ± 0.02 polydispersity index (PDI), and 75.41 ± 4.81% entrapment efficiency. The morphological examination by transmission electron microscopy revealed spherical structure composed of a drug core stabilized within the phospholipid shell. Enhanced cell uptake of coumarin-6-loaded phospholipid nanoparticles by MCF-7 cell line indicated NDPN-efficient cell uptake. In vitro hemolysis test confirmed the safety of the phospholipid nanoparticles. NDPNs exhibited increased area under the curve (AUC) and mean residence time (MRT) by 3.0- and 3.3-fold, respectively, in comparison with the existing docetaxel parenteral formulation (Taxotere®), indicating a potential for sustained action. Thus, the novel NDPNs exhibit an ability to be an intravenous docetaxel formulation with enhanced uptake, decreased toxicity, and prolonged activity.
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