Anionic and Cationic Vitamin E-TPGS Mixed Polymeric Phospholipid Micellar Vehicles

Area of Science:

• Pharmacology
• Nanotechnology
• Oncology

Background:

• Berberine (Brb) is a plant-derived isoquinoline alkaloid with demonstrated anticancer properties, including anti-mitotic, pro-apoptotic, anti-angiogenic, and anti-metastatic activities.
• Despite its therapeutic potential and low systemic toxicity, the clinical application of Brb is hindered by poor aqueous solubility, low membrane permeability, and unfavorable pharmacokinetics (PK).

Purpose of the Study:

• To develop and evaluate lipid-based nanocarriers, specifically amphiphilic mixed micelles, for improved delivery of Berberine in prostate cancer therapy.
• To overcome the pharmaceutical limitations of Berberine and enhance its anticancer efficacy through micellar formulation.

Main Methods:

• Physicochemical characterization of Berberine-loaded mixed micelles (Mic) composed of polymeric phospholipid conjugates and PEG-succinate ester of tocopherol.
• In vitro release studies, pharmacokinetic (PK) simulation, and in vitro assays assessing cytotoxicity and apoptosis induction in human prostate cancer cell lines (PC3 and LNPaC).

Main Results:

• Optimized stealth PEG-PE/TPGS-mixed micelles demonstrated efficient solubilization of Berberine, potentially improving systemic PK profiles by over 30-fold.
• The micellar Berberine formulation significantly enhanced pro-apoptotic action and overall anticancer efficacy against in vitro models of prostate cancer.

Conclusions:

• Amphiphilic mixed micelles represent a promising strategy for overcoming the delivery challenges associated with Berberine.
• This nanocarrier system effectively improves Berberine's anticancer efficacy, particularly in prostate cancer models, paving the way for potential clinical translation.