A new double emulsion solvent diffusion technique for encapsulating hydrophilic molecules in PLGA nanoparticles

Area of Science:

• Materials Science
• Biotechnology
• Pharmaceutical Sciences

Background:

• Traditional nanoparticle (NP) preparation methods struggle with low encapsulation efficiency for hydrophilic molecules due to drug partitioning.
• Developing advanced NP formulations is crucial for improving drug delivery and therapeutic outcomes.

Purpose of the Study:

• To develop a novel nanoparticle (NP) preparation technique for enhanced encapsulation of hydrophilic molecules.
• To evaluate the efficacy of the double emulsion solvent diffusion (DES-D) method using alendronate as a model drug.

Main Methods:

• A double emulsion system combined with a partially water-soluble organic solvent (ethyl acetate) was employed.
• The novel double emulsion solvent diffusion (DES-D) technique was utilized for nanoparticle preparation.
• Alendronate-loaded NPs were characterized for size, distribution, and encapsulation yield.

Main Results:

• The DES-D technique yielded nanoparticles with smaller size and narrower size distribution compared to classical methods.
• Higher encapsulation efficiency for alendronate was achieved using the DES-D method.
• The formulated alendronate nanoparticles demonstrated significant biological activity, including anti-inflammatory effects and inhibition of restenosis.

Conclusions:

• The DES-D technique offers improved nanoparticle formulation characteristics, including enhanced encapsulation yield and biocompatibility.
• This novel method provides a promising approach for the efficient delivery of hydrophilic drugs.
• The developed nanoparticles maintain therapeutic bioactivity, suggesting potential clinical applications.