Planar-/Curvilinear-Bioprinted Tri-Cell-Laden Hydrogel for Healing Irregular Chronic Wounds.
Adv Healthc Mater
; 11(16): e2201021, 2022 08.
Article
en En
| MEDLINE
| ID: mdl-35758924
ABSTRACT
Chronic cutaneous wounds from tissue trauma or extensive burns can impair skin barrier function and cause severe infection. Fabrication of a customizable tissue-engineered skin is a promising strategy for regeneration of uneven wounds. Herein, a planar-/curvilinear-bioprintable hydrogel is developed to produce tissue-engineered skin and evaluated in rat models of chronic and irregular wounds. The hydrogel is composed of biodegradable polyurethane (PU) and gelatin. The hydrogel laden with cells displays good 3D printability and structure stability. The circular wounds of normal and diabetes mellitus (DM) rats treated with planar-printed tri-cell-laden (fibroblasts, keratinocytes, and endothelial progenitor cells (EPCs)) hydrogel demonstrate full reepithelization and dermal repair as well as large amounts of neovascularization and collagen production after 28 days. Furthermore, the curvilinear module is fabricated based on the corresponding wound topography for curvilinear-bioprinting of the irregular tissue-engineered skin. The large and irregular rat skin wounds treated with curvilinear-printed tri-cell-laden hydrogel demonstrate full repair after 28 days. This planar-/curvilinear-bioprintable tri-cell-laden hydrogel shows great potential for customized biofabrication in skin tissue engineering.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Hidrogeles
/
Bioimpresión
Límite:
Animals
Idioma:
En
Revista:
Adv Healthc Mater
Año:
2022
Tipo del documento:
Article
País de afiliación:
Taiwán