Preparation of Doxorubicin-Loaded Carboxymethyl-β-Cyclodextrin/Chitosan Nanoparticles with Antioxidant, Antitumor Activities and pH-Sensitive Release

• Published in: Marine drugs 2022-04, Vol.20 (5), p.278
• Main Authors: Mi, Yingqi, Zhang, Jingjing, Tan, Wenqiang, Miao, Qin, Li, Qing, Guo, Zhanyong
• Format: Article
• Language: English
• Subjects: Acids; Ammonium; Ammonium chloride; Ammonium compounds; Anticancer properties; antioxidant activity; Antioxidants; Antioxidants - pharmacology; Antitumor activity; Antitumour agents; beta-Cyclodextrins; Bioavailability; Biocompatibility; Cancer therapies; Chemotherapy; Chitosan; chitosan nanoparticles; Cholecystokinin; Controlled release; cyclodextrin; Cyclodextrins; Delayed-Action Preparations; Doxorubicin; Doxorubicin - pharmacology; Drug Carriers; Drug delivery; Drug delivery systems; drug release; Drugs; Folic acid; Fourier transforms; Hydrocarbons; Hydrogen-Ion Concentration; Lipid peroxidation; Lipids; Nanoparticles; NMR; Nuclear magnetic resonance; Peroxidation; pH effects; Scanning electron microscopy; Spectrum analysis; Vibration; Vitamin B; Zeta potential; β-Cyclodextrin
• ISSN: 1660-3397; 1660-3397
• DOI: 10.3390/md20050278

In this study, chitosan nanoparticles (HF-CD NPs) were synthesized by an ionic gelation method using negatively charged carboxymethyl-β-cyclodextrin and positively charged 2-hydroxypropyltrimethyl ammonium chloride chitosan bearing folic acid. The surface morphology of HF-CD NPs was spherical or oval, and they possessed relatively small particle size (192 ± 8 nm) and positive zeta potential (+20 ± 2 mV). Meanwhile, doxorubicin (Dox) was selected as model drug to investigate the prepared nanoparticles' potential to serve as a drug delivery carrier. The drug loading efficiency of drug-loaded nanoparticles (HF-Dox-CD NPs) was 31.25%. In vitro release profiles showed that Dox release of nanoparticles represented a pH-sensitive sustained and controlled release characteristic. At the same time, the antioxidant activity of nanoparticles was measured, and chitosan nanoparticles possessed good antioxidant activity and could inhibit the lipid peroxidation inside the cell and avoid material infection. Notably, CCK-8 assay testified that the nanoparticles were safe drug carriers and significantly enhanced the antitumor activity of Dox. The nanoparticles possessed good antioxidant activity, pH-sensitive sustained controlled release, enhanced antitumor activity, and could be expected to serve as a drug carrier in future with broad application prospects.