Human mesenchymal progenitor cell-based tissue engineering of a single-unit osteochondral construct.
Fiche publication
Date publication
juillet 2004
Auteurs
Membres identifiés du Cancéropôle Est :
Pr LAQUERRIERE Patrice
Tous les auteurs :
Tuli R, Nandi S, Li WJ, Tuli S, Huang X, Manner PA, Laquerriere P, Noth U, Hall DJ, Tuan RS
Lien Pubmed
Résumé
A desirable strategy for articular cartilage repair is to surgically replace the damaged area with an in vitro-engineered osteochondral plug. We report here the development of a novel osteochondral construct using human trabecular bone-derived mesenchymal progenitor cells and a biodegradable poly-D,L-lactic acid scaffold. The cartilage layer was fabricated by press-coating a chondrifying high-density cell pellet onto the scaffold, which was then loaded with cells previously initiated to undergo osteogenesis. The composite was then cultured in a cocktail medium formulated to maintain both chondrogenesis and osteogenesis. Macroscopically, the construct consisted of a cartilage-like layer adherent to, and overlying, a dense bone-like component. RT-PCR, immunohistochemistry, and histology revealed hyaline-like cartilage and bone with an interface resembling the native osteochondral junction. All parameters, including mechanical properties, improved with increased culture time. The single-cell source nature of the construct, which minimizes handling while maximizing biocompatibility, suggests applicability for articular cartilage repair.
Référence
Tissue Eng. 2004 Jul-Aug;10(7-8):1169-79.