Nanofibrous artificial skin substitute composed of mPEG-PCL grafted gelatin/hyaluronan/chondroitin sulfate/sericin for 2nd degree burn care: in vitro and in vivo study.

Abstract

The aim of this study was to investigate the efficacy of a skin substitute composed of mPEG-PCL-grafted-gelatin (Bio-Syn)/hyaluronan/chondroitin sulfate/sericin and to study its in vitro biocompatibility with human fibroblasts, human keratinocytes and hMSCs in terms of cellular adhesion and proliferation (∼5-6 fold). mPEG-PCL was grafted into a gelatin backbone via a Michael addition reaction to prepare Bio-Syn and it was characterized using ATR-FTIR, 1H NMR and TNBS assay. Additionally, keratinocyte-hMSC contact co-culture studies showed that Bio-Syn composite scaffolds loaded with sericin promote hMSCs' epithelial differentiation with regard to qRT-PCR gene expression (ΔNp63α and keratin 14) and expression of various epithelial markers (Pan-cytokeratin, ΔNp63α and keratin 14). In vivo efficacy studies on a 2nd degree burn wound model in Wistar rats showed an improved rate of wound contraction, histology (H&E and Van Gieson's staining) and pro-healing marker (hexosamine, hydroxyproline, etc.) expression in granular tissue compared to using the commercial dressing Neuskin™ and a cotton gauze control.

• Authors: Sirsendu Bhowmick, A V Thanusha, Arun Kumar, Dieter Scharnweber, Sandra Rother, Veena Koul
• Journal: RSC advances (RSC Adv) Vol. 8 Issue 30 Pg. 16420-16432 (May 03 2018) ISSN: 2046-2069 [Electronic] England
• PMID: 35540513 (Publication Type: Journal Article)
• Copyright: This journal is © The Royal Society of Chemistry.