Wound Tissue Can Utilize a Polymeric Template to Synthesize a Functional Extension of Skin

TLDR

The study demonstrates that applying a bilayer polymeric membrane enables prompt and long‑term closure of full‑thickness skin wounds in guinea pigs and humans. The bilayer membrane consists of a silicone elastomer top layer and a porous collagen/glycosaminoglycan bottom layer that can be seeded with autologous basal cells, and it serves as a sterile culture medium for host tissue to generate neoepidermal and neodermal layers. The approach requires no immunosuppression and results in no infection, exudation, or rejection, producing a functional skin extension across the wound within roughly four weeks.

Abstract

Prompt and long-term closure of full-thickness skin wounds in guinea pigs and humans is achieved by applying a bilayer polymeric membrane. The membrane comprises a top layer of a silicone elastomer and a bottom layer of a porous cross-linked network of collagen and glycosaminoglycan. The bottom layer can be seeded with a small number of autologous basal cells before grafting. No immunosuppression is used and infection, exudation, and rejection are absent. Host tissue utilizes the sterile membrane as a culture medium to synthesize neoepidermal and neodermal tissue. A functional extension of skin over the entire wound area is formed in about 4 weeks.