Abstract
Background: Chemotherapy is regarded as first-line therapy in various cancer types besides surgical procedures. However, lack of cell selectivity and poor drug targeting to the cancer zone of the active agents results in accumulation in normal tissues with considerably high severe side effects. Therefore, novel drug delivery systems are required to enhance cancer treatment.
Objective: In this study, Paclitaxel (PTX) incorporated Kollidon® SR (KSR) and Chitosan (CS) based polymeric nanoparticles were prepared for potential use for colorectal cancer treatment.
Methods: Polymeric nanoparticles were prepared by spray dying method. Physicochemical characterization studies were performed with particle size (PS), polydispersity index (PDI), zeta potential (ZP), drug loading (DL %), encapsulation efficiency (EE %) and structural evaluations using differential scanning calorimetry (DSC), X-ray diffractometry (XRD), Fourier transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance (1H-NMR) analyses. Cytotoxicity of the nanoparticles was screened on HT-29 (human colorectal adenocarcinoma) and HTC-15 (Dukes' type C, colorectal adenocarcinoma) cell lines with MTT assay.
Results: Analysis results revealed the successful incorporation of PTX into the polymeric lattices. Particles showed cytotoxic activity on HT-29 and HTC-15 cell lines, depending on the application dose after 48 hours. Nanoparticles also remained stable at 5°C ± 3°C and 25°C ± 2°C (60% ± 5 Relative Humidity (RH)) during the storage period of 6 months.
Conclusion: As a result of the study, KSR and CS-based nanoparticles could be regarded as promising nano-carriers for improved therapeutic efficacy of PTX for colorectal cancer treatment.
Graphical Abstract
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