A Novel Curcumin Arginine Salt: A Solution for Poor Solubility and Potential Anticancer Activities

Area of Science:

• Pharmaceutical Chemistry
• Natural Product Chemistry

Background:

• Curcumin, a natural polyphenol, exhibits anticancer properties.
• Poor solubility and permeability limit curcumin's pharmaceutical application.
• L-arginine, a basic amino acid, was investigated to enhance curcumin's properties.

Purpose of the Study:

• To synthesize and characterize a curcumin-L-arginine salt.
• To enhance curcumin's solubility and anticancer activity.
• To evaluate the salt's efficacy compared to standard treatments.

Main Methods:

• Curcumin-L-arginine salt preparation via physical mixing and coprecipitation.
• Characterization using molecular docking, solubility tests, DSC, FTIR, and XRD.
• In vitro dissolution and cytotoxicity assays using MCF7 cell lines.

Main Results:

• Molecular docking confirmed a curcumin-L-arginine salt/ion-pair complex.
• Solubility of curcumin increased significantly (335-440 fold).
• Cytotoxicity improved 1.4-fold, comparable to Taxol, with enhanced solubility.

Conclusions:

• The curcumin-L-arginine salt formation enhances curcumin's solubility and anticancer efficacy.
• This salt represents a promising approach for improved curcumin-based cancer therapy.
• The enhanced solubility and activity suggest potential for overcoming pharmaceutical limitations.