Electrospun Coaxial Polycaprolactone/Polyvinylpyrrolidone Fibers Containing Cisplatin: A Potential Local Chemotherapy Delivery System for Cervical Cancer Treatment.

Cisplatin, a frequently used chemotherapeutic for the treatment of cervical cancer, causes adverse effects that limit its use. Treatment with local therapy that limits toxicity remains a challenge. The aim of this study was to develop a local intravaginal cisplatin delivery system of polycaprolactone/polyvinylpyrrolidone sheath/core fibers by coaxial electrospinning. Physicochemical properties, degradation rate, mucoadhesion, release profile, and in vitro biosafety assays were characterized. Microscopy images confirmed the coaxial nature of the fibers and showed continuous morphology and diameters of 3-9 µm. The combination of polymers improved their mechanical properties. The contact angle < 85° indicated a hydrophilic surface, which would allow its dissolution in the vaginal environment. The release profile showed a rapid initial release followed by a slow and sustained release over eight days. The degradation test showed ~50% dissolution of the fibers on day 10. The adhesion of the fibrous device to the vaginal wall lasted for more than 15 days, which was sufficient time to allow the release of cisplatin. The biosafety tests showed great cytocompatibility and no hemolysis. The characteristics of the developed system open the possibility of its application as a localized therapy against cervical cancer, reducing adverse effects and improving the quality of life of patients.