Optimizing the chitosan-PCL based membranes with random/aligned fiber structure for controlled ciprofloxacin delivery and wound healing

• Published in: International journal of biological macromolecules 2022-04, Vol.205, p.500-510
• Main Authors: Cui, Congjing, Sun, Shibin, Li, Xueyan, Chen, Shaojuan, Wu, Shaohua, Zhou, Fang, Ma, Jianwei
• Format: Article
• Language: English
• Subjects: Antibacterial activity; Chitosan; Ciprofloxacin; Electrospun membranes; Wound healing
• ISSN: 0141-8130; 1879-0003
• DOI: 10.1016/j.ijbiomac.2022.02.118

The aim of this study was to optimize the chitosan/polycaprolactone (CS/PCL) electrospun nanofibrous membrane with random/aligned fiber structures to provide a controlled release of ciprofloxacin (Cip) and guide skin fibroblasts arrangement. A series of Cip-encapsulated CS/PCL electrospun membranes were prepared by coaxial-electrospinning. The existence of Cip in core-shell structured fibers was confirmed by using SEM, TEM and FTIR characterizations. The in vitro drug-release profiles suggested that the Cip presented a sustained release for 15 days. Simultaneously, cyto-compatibility of the membranes decreased with the increasing amount of Cip from 2.0% to 5.0%. In particular, aligned CS/PCL membrane loading with 2.0% Cip exhibited a good balanced ability between cell proliferation and antibacterial effect (>99% against Escherichia coli and Staphylococcus aureus), which significantly accelerated the wound healing process in vivo. These results suggested that the aligned CS/PCL membrane loading with 2.0% Cip exhibited great antibacterial property and biocompatibility, which possess promising applications potential for wound healing. •The aligned Cip-loaded CS/PCL fibers were prepared by coaxial-electrospinning.•The aligned fibrous membrane could undergo sustained release Cip for 15 days.•The aligned fibers loading with 2.0% Cip, exhibited excellent antibacterial effect.•The aligned fibers loading with 2.0% Cip presented great biocompatibility.