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Development of Carbohydrate Polyelectrolyte Nanoparticles for Use in Drug Delivery Systems that Cross the Blood-Brain
Vladimir E Silant'ev1,2, Mikhail E Shmelev1,3, Andrei S Belousov1
1School of Medicine and Life Sciences, Far Eastern Federal University, Vladivostok 690922, Russia.
Abstract:
The low effectiveness of various brain cancer treatment methods is due to a number of significant challenges. Most of them are unable to penetrate the blood-brain barrier (BBB) when drugs are administered systemically through the bloodstream. Nanoscale particles play a special role among materials capable of binding drug molecules and successfully crossing the BBB. Biopolymeric nanoparticles (NPs) demonstrate excellent biocompatibility and have the remarkable ability to modify the environment surrounding tumor cells, thereby potentially improving cellular uptake of delivery agents. In our research, nanoscale polyelectrolyte complexes (PECs) ranging in size from 56 to 209 nm were synthesized by ionic interaction of the oppositely charged polysaccharides pectin and chitosan. The structural characteristics of these complexes were carefully characterized by infrared (FTIR) and Raman spectroscopy. The immobilization efficiency of antitumor drugs was comprehensively evaluated using UV spectrophotometry. The cytotoxicity of the NPs was evaluated in the U87-MG cell line. The preliminary data indicate a significant decrease in the metabolic activity of these tumor cells. Important details on the interaction of the NPs with an endothelial layer structurally similar to the BBB were obtained by simulating the BBB using a model based on human blood vessels. Our studies allowed us to establish a significant correlation between the kinetic parameters of drug immobilization and the ratio of biopolymer concentrations in the initial compositions, which provides valuable information for future optimization of drug delivery system design.
Insights
Researchers developed novel biopolymeric nanoparticles (NPs) using pectin and chitosan to overcome the blood-brain barrier (BBB) for brain cancer treatment. These NPs show promise in delivering drugs effectively and reducing tumor cell activity.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Oncology Drug Delivery
Background:
- Brain cancer treatments face challenges due to the blood-brain barrier (BBB) limiting drug penetration.
- Nanoscale particles offer a promising strategy for drug delivery across the BBB.
- Biopolymeric nanoparticles (NPs) exhibit biocompatibility and potential for enhanced cellular uptake in tumors.
Purpose of the Study:
- To synthesize and characterize nanoscale polyelectrolyte complexes (PECs) for targeted brain cancer drug delivery.
- To evaluate the drug immobilization efficiency and cytotoxicity of the developed NPs.
- To investigate the interaction of NPs with a simulated blood-brain barrier (BBB) model.
Main Methods:
- Synthesis of PECs via ionic interaction of pectin and chitosan.
- Characterization using FTIR and Raman spectroscopy.
- Drug immobilization assessed by UV spectrophotometry.
- Cytotoxicity testing on U87-MG cell line.
- BBB model simulation using human blood vessel endothelial layer.
Main Results:
- Successfully synthesized PECs with sizes ranging from 56 to 209 nm.
- Demonstrated significant drug immobilization efficiency.
- Observed a notable decrease in U87-MG tumor cell metabolic activity.
- Established a correlation between biopolymer ratio and drug immobilization kinetics.
- Gained insights into NP interaction with a BBB-like endothelial layer.
Conclusions:
- Developed pectin-chitosan PECs as a viable platform for brain cancer drug delivery.
- The study provides a foundation for optimizing NP-based drug delivery systems for brain tumors.
- The findings highlight the potential of these NPs to overcome BBB limitations in cancer therapy.
