Pomegranate extract-loaded solid lipid nanoparticles: design, optimization, and in vitro cytotoxicity study.

Area of Science:

• Nanotechnology
• Pharmacology
• Biochemistry

Background:

• Pomegranate extract (PE) possesses natural antioxidant and anticancer properties due to its polyphenol content.
• Maximizing the chemotherapeutic efficacy of PE is a key research objective.

Purpose of the Study:

• To optimize a solid lipid nanoparticle (SLN) formulation for enhanced pomegranate extract (PE) delivery.
• To improve the chemotherapeutic efficacy and selectivity of PE using nanoencapsulation.

Main Methods:

• Utilized Box-Behnken design to optimize lipid, surfactant, and cosurfactant concentrations for PE-loaded SLNs.
• Prepared PE-SLNs via hot homogenization and ultra-sonication.
• Evaluated anti-proliferative activity of optimized PE-SLNs against MCF-7, PC-3, HepG-2 cancer cell lines and HFB-4 normal cells.

Main Results:

• Optimized PE-SLNs achieved particle sizes between 407.5-651.9 nm and entrapment efficiencies of 56.02-65.23%.
• The optimized PE-SLN formulation showed over a 40-fold increase in growth inhibition compared to free PE.
• Demonstrated enhanced selectivity against cancer cells, particularly MCF-7 breast cancer cells, over normal cells.

Conclusions:

• Nanoencapsulation significantly enhances the anticancer efficacy of pomegranate extract.
• Optimized PE-loaded SLNs represent a promising candidate for novel chemotherapeutic applications.