Diclofenac Embedded in Silk Fibroin Fibers as a Drug Delivery System

Author:

Opálková Šišková AlenaORCID,Kozma Erika,Opálek Andrej,Kroneková Zuzana,Kleinová Angela,Nagy Štefan,Kronek Juraj,Rydz JoannaORCID,Eckstein Andicsová Anita

Abstract

Silk fibroin is a biocompatible, non-toxic, mechanically robust protein, and it is commonly used and studied as a material for biomedical applications. Silk fibroin also gained particular interest as a drug carrier vehicle, and numerous silk formats have been investigated for this purpose. Herein, we have prepared electrospun nanofibers from pure silk fibroin and blended silk fibroin/casein, followed by the incorporation of an anti-inflammatory drug, diclofenac. Casein serves as an excipient in pharmaceutical products and has a positive effect on the gradual release of drugs. The characteristics of the investigated composites were estimated by scanning electron microscope, transmission electron microscope, thermogravimetric analysis, and a lifetime of diclofenac by electron paramagnetic resonance analysis. The cumulative release in vitro of diclofenac sodium salt, together with the antiproliferative effect of diclofenac sodium salt-loaded silk nanofibers against the growth of two cancer cell lines, are presented and discussed.

Publisher

MDPI AG

Subject

General Materials Science

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