Silk fibroin sponge impregnated with fish bone collagen: A promising wound healing scaffold and skin tissue regeneration

In the present study, porous silk fibroin sponges (SFS) were prepared using silk fibroin (SF), fish bone collagen (FBC), and olive oil (OO). The study investigates the potential use of using this sponge as skin tissue regeneration. The sponge was characterized for its physicochemical, mechanical, antimicrobial, and drug release properties. An in vitro study was carried out using human keratinocyte cell line (HaCaT). Biodegradation study using enzymatic method was carried out. The results showed that the mechanical properties such as tensile strength (23.40 +/- 0.05 MPa), elongation at break (14.25 +/- 0.02%), and water absorption (30.23 +/- 0.01%) of the SFS were excellent, indicating promising performance. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assays proved the biocompatible nature of the SFS. The SFS exhibited outstanding antibacterial properties against E. coli (4.72 +/- 0.05 mm) and S. aureus (4.98 +/- 0.07 mm). The developed SFS promote a promising solution for skin tissue regeneration and wound dressing.