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PLGA Nanoparticles Formed by Single- or Double-emulsion with Vitamin E-TPGS

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Polyelectrolyte coated PLGA nanoparticles: templation and release behavior.

Jie Zhou¹, Sergio Moya, Lie Ma

¹Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China.

Macromolecular Bioscience

|December 18, 2008

Summary

This summary is machine-generated.

Poly[(D,L-lactide)-co-glycolide] (PLGA) nanoparticles were surface-modified using layer-by-layer assembly. This method enhanced nanoparticle properties for controlled drug delivery applications.

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Area of Science:

Biomaterials Science
Nanotechnology
Polymer Chemistry

Background:

Poly[(D,L-lactide)-co-glycolide] (PLGA) nanoparticles are widely used for drug delivery.
Surface modification is crucial for controlling nanoparticle behavior and drug release.

Purpose of the Study:

To prepare and characterize PLGA nanoparticles surface-modified with polyethyleneimine and poly(acrylic acid) multilayers.
To investigate the effect of crosslinking and poly(ethylene glycol) (PEG) grafting on nanoparticle properties and drug release.

Main Methods:

Emulsification-solvent evaporation method for nanoparticle preparation.
Layer-by-layer (LBL) assembly for surface modification.
Quartz crystal microbalance with dissipation monitoring (QCM-D), zeta-potential, flow cytometry, and transmission electron microscopy (TEM) for characterization.
Carbodiimide condensation for crosslinking and PEG grafting.
Drug release studies at 37°C and 60°C.

Main Results:

Successful fabrication of multilayer-coated PLGA nanoparticles.
Demonstrated control over surface properties through LBL assembly, crosslinking, and PEGylation.
Investigated the release kinetics of incorporated model drugs (Rhodamine 6G, 5(6)-carboxyfluorescein, fluorescein).

Conclusions:

Surface-modified PLGA nanoparticles offer tunable properties for advanced drug delivery systems.
Crosslinking and PEGylation can modulate drug release profiles.
The developed methodology provides a versatile platform for creating functional nanoparticles.