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Synthesis and Characterization of Placental Chondroitin Sulfate A (plCSA)-Targeting Lipid-Polymer Nanoparticles
Published on: September 18, 2018
Chitosan-modified PLGA nanoparticles with versatile surface for improved drug delivery.
Yichao Wang1, Puwang Li, Lingxue Kong
1Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia.
AAPS Pharmscitech
|March 7, 2013
Summary
Chitosan modification enhances poly(lactide-co-glycolide) nanoparticles, introducing amine groups for improved cancer cell affinity and sustained drug release. This surface versatility boosts the efficacy of drug delivery systems.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Drug Delivery Systems
Background:
- Poly(lactide-co-glycolide) (PLGA) nanoparticles face limitations in drug delivery due to a lack of surface functional groups.
- This deficiency hinders passive targeting and conjugation with specific molecules, restricting applications.
Purpose of the Study:
- To modify PLGA nanoparticles with chitosan to enhance their surface properties for improved drug delivery.
- To investigate the impact of chitosan modification on nanoparticle surface charge, functional groups, and drug release profiles.
Main Methods:
- PLGA nanoparticles were modified with chitosan using physical adsorption and chemical binding.
- Surface charge was controlled by adjusting pH in chitosan solutions.
- Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy confirmed the presence of amine groups.
Main Results:
- Chitosan modification reversed the surface charge of PLGA nanoparticles from negative to positive, increasing cancer cell affinity.
- The presence of amine groups on the modified nanoparticles was confirmed.
- Modified nanoparticles exhibited an initial burst release followed by sustained drug release, achieving higher cumulative release over time.
Conclusions:
- Chitosan modification significantly enhances the versatility of PLGA nanoparticle surfaces.
- The improved surface properties and drug release kinetics suggest potential for enhanced efficacy in drug delivery systems.
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