Abstract
Background: Solid lipid nanoparticles (SLNs) is the drug delivery system that has the capability to improve drug release at the desired tumor site. The aim of the present study is to develop glyceryl monostearate (GMS) based SLNs for the controlled delivery of docetaxel.
Methods: Hot melt encapsulation (HME) method was employed avoiding the use of organic solvents and, therefore, regarded as green synthesis of SLNs.
Results: Optimized DTX-SLNs showed desirable size (100 nm) with low poly dispersity index and excellent entrapment efficiency. Surface charge confirmed the stability of formulation. transmission electron microscope (TEM) analysis showed spherical shaped particles and fourier transform infrared microscopy (FTIR) revealed compatibility among formulation excipients. Differential scanning calorimeter (DSC) analysis revealed that the melting transition peak of optimized formulation was also greater than 40°C indicating that SLNs would be solid at body temperature. In-vitro release profile (68% in 24 hours) revealed the controlled release profile of DTX-SLNs, indicating lipophilic docetaxel drug was entrapped inside high melting point lipid core. Cytotoxicity study revealed that blank SLNs were found to be biocompatible while dose dependent cytotoxicity was shown by DTX-SLNs.
Conclusion: These studies suggest that DTX-SLNs have the potential for controlled delivery of docetaxel and improved therapeutic outcome.
Keywords: SLNs, GMS, docetaxel, hot melt encapsulation, breast cancer, controlled drug delivery, ovarian cancer.
Graphical Abstract
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