Electrospun poly(hydroxybutyrate) scaffolds promote engraftment of human skin equivalents via macrophage M2 polarization and angiogenesis

Autores de IIS La Fe

• Delia Castellano Izquierdo

  Autor

• Ana Sanchis Gandia

  Autor

• Maria Blanes Company

  Autor

• María Dolores Pérez Del Caz

  Autor

• Amparo Ruiz Sauri

  Autor

• Marina Piquer Gil

  Autor

• Cristina Pelacho Lopez

  Autor

• Bruno Marco Barrachina

  Autor

• Nahuel Aquiles Garcia

  Autor

• Imelda Ontoria Oviedo

  Autor

• 

  Pilar Sepúlveda Sanchis

  Autor

Grupos

• 

  Biomedicina Molecular, Celular y Genómica

• Dermatología y Regeneración Tisular

• Regeneración y Trasplante Cardíaco

Abstract

Human dermo-epidermal skin equivalents (DE) comprising in vitro expanded autologous keratinocytes and fibroblasts are a good option for massive burn treatment. However, the lengthy expansion time required to obtain sufficient surface to cover an extensive burn together with the challenging surgical procedure limits their clinical use. The integration of DE and biodegradable scaffolds has been proposed in an effort to enhance their mechanical properties. Here, it is shown that poly(hydroxybutyrate) electrospun scaffolds (PHB) present good biocompatibility both in vitro and in vivo and are superior to poly-epsilon-caprolactone electrospun scaffolds as a substrate for skin reconstruction. Implantation of PHB scaffolds in healthy rats polarized macrophages to an M2-type that promoted constructive in vivo remodelling. Moreover, implantation of DE-PHB composites in a NOD/SCID mouse xenograft model resulted in engraftment accompanied by an increase in angiogenesis that favoured the survival of the human graft. Thus, PHB scaffolds are an attractive substrate for further exploration in skin reconstruction procedures, probably due in part to their greater angiogenic and M2 macrophage polarization properties. Copyright (c) 2017 John Wiley & Sons, Ltd.

Keywords

• poly(hydroxybutyrate); electrospinning; skin equivalents; human skin xenograft