In this study, we have combined the wound-healing properties of two biodegradable polymers, viz., starch and gelatin, and have reinforced their mechanical strength through cross-linking. Further, scaffolds of this polymer combination were used to support an organotypic culture of human skin for wound healing. Human dermal fibroblasts (HDFs) and human epidermal keratinocytes (HEKs) were isolated and were seeded on the scaffolds on days 1 and 7, respectively. The scaffold was then air-lifted to develop a stratified epidermal layer. Hematoxylin and eosin (H&E) staining and immunohistochemical analysis ascertained that the histology of the skin organotypic culture was similar to that of the human skin. For in vivo animal investigations, the scaffolds were transplanted in a full-thickness wound mouse model, as a one-step procedure, wherein the artificial skin substitute showed the presence of well-defined epidermis and formation of stratum basale by day 14. By combining the inherent properties of both the materials, we have synthesized a cost-effective porous scaffold with good mechanical strength and excellent biocompatibility that can be easily adapted for commercial use. The aforementioned scaffold may integrate with the surrounding tissue, accelerate wound closure, and promote tissue reorganization and remodeling.
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