Curcumin Delivery by Poly(Lactide)-Based Co-Polymeric Micelles: An In Vitro Anticancer Study

Area of Science:

• Nanotechnology in Drug Delivery
• Polymer Science
• Cancer Therapeutics

Background:

• Curcumin (CUR) exhibits potent anti-cancer properties but suffers from poor solubility and bioavailability.
• Developing effective delivery systems is crucial to harness CUR's therapeutic potential.
• Block co-polymeric micelles offer a promising platform for encapsulating hydrophobic drugs like CUR.

Purpose of the Study:

• To synthesize methoxy-poly(ethylene glycol)-poly(D,L-lactide) (mPEG-PLA) block co-polymeric micelles for Curcumin (CUR) encapsulation.
• To enhance the dispersibility, chemical stability, and cellular uptake of CUR.
• To improve the bioavailability and anti-cancer efficacy of CUR.

Main Methods:

• CUR-mPEG-PLA micelles were prepared using the thin-film hydration method.
• Micelle characteristics (size, morphology, loading capacity, CMC) were evaluated.
• Cytotoxicity of CUR-mPEG-PLA micelles was assessed against B16F10 and MDA-MB-231 cancer cell lines.

Main Results:

• CUR-mPEG-PLA micelles were successfully synthesized with an average size of 110 nm and high encapsulation efficiency (91.89%).
• Sustained release of CUR from micelles was observed, significantly slower than free CUR.
• CUR-mPEG-PLA micelles demonstrated efficient cellular uptake and enhanced cytotoxicity compared to free CUR in MDA-MB-231 cells.

Conclusions:

• The mPEG-PLA micellar system effectively solubilizes, stabilizes, and delivers CUR.
• This formulation shows potential for controlled drug delivery to cancer cells.
• The developed micellar system enhances CUR's anti-cancer activity.