title: Design of an elastin-layered dermal regeneration template.
abstract: We demonstrate a novel approach for the production of tunable quantities of elastic fibers. We also show that exogenous tropoelastin is rate-limiting for elastin synthesis regardless of the age of the dermal fibroblast donor. Additionally, we provide a strategy to further enhance synthesis by older cells through the application of conditioned media. We show that this approach delivers an elastin layer on one side of the leading dermal repair template for contact with the deep dermis in order to deliver prefabricated elastic fibers to a physiologically appropriate site during subsequent surgery. This system is attractive because it provides for the first time a viable path for sufficient, histologically detectable levels of patient elastin into full-thickness wound sites that have until now lacked this elastic underlayer.
  
  
  
  The scars of full thickness wounds typically lack elasticity. Elastin is essential for skin elasticity and is enriched in the deep dermis. This paper is significant because it shows that: (1) we can generate elastic fibers in tunable quantities, (2) tropoelastin is the rate-limiting component in elastin synthesis in vitro, (3) we can generate elastin fibers regardless of donor age, (4) we describe a novel approach to further increase the numbers and thickness of elastic fibers for older donors, (5) we improve on Integra Dermal Regeneration Template and generate a new hybrid biomaterial intended to subsequently surgically deliver these elastic fibers, (6) the elastic fiber layer is presented on the side of Integra that is intended for delivery into its physiologically appropriate site i.e. the deep dermis.
authors.affiliation: Charles Perkins Centre, University of Sydney, NSW 2006, Australia; School of Life and Environmental Sciences, University of Sydney, NSW 2006, Australia.
authors.forename: Suzanne M
authors.initials: SM
authors.lastname: Mithieux
authors.affiliation: Charles Perkins Centre, University of Sydney, NSW 2006, Australia; School of Life and Environmental Sciences, University of Sydney, NSW 2006, Australia; Bosch Institute, University of Sydney, NSW 2006, Australia. Electronic address: tony.weiss@sydney.edu.au.
authors.forename: Anthony S
authors.initials: AS
authors.lastname: Weiss
mesh_terms: D001458:Bandages; D002478:Cells, Cultured; D020099:Coated Materials, Biocompatible / Q000138:chemical synthesis*; D004549:Elastin / Q000737:chemistry*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005347:Fibroblasts / Q000166:cytology / Q000473:pathology*; D048091:Guided Tissue Regeneration / Q000295:instrumentation*; D006801:Humans; D008297:Male; D012038:Regeneration / Q000502:physiology; D017768:Skin, Artificial; D054457:Tissue Scaffolds
chemical_list: D020099:Coated Materials, Biocompatible; D004549:Elastin
keywords: Deep dermis; Elastic fiber; Elastin; Integra; Tropoelastin