[In vitro and in vivo study of chondrogenesis on the hybrid scaffold from fibrin modified PLGA and adipose-derived stem cells]

Abstract

Aim: To investigated the effect of the presence of fibrin in the PLGA scaffold on the differentiation of adipose-derived stem cell (ASCs) into chondrocytes in the chondrogenic media.

Methods: ASCs were prepared by colagenase I digestion of fat from rabbits. The PLGA scaffolds were prepared by LDM technology. The hybrid scaffold was fabricated by a freeze-drying method. Isolated ASCs were cultured in the PLGA without and with fibrin up to 14 days in specific chondrogenic medium. The surface property of the scaffold was observed by SEM. Cell attachment was evaluated, and glycoaminoglycans (GAGs) content was tested by biochemical method.

Result: When ASCs were seeded within fibrin modified PLGA scaffold in vitro, enhanced cellular attachment and differentiation were observed compared to unmodified PLGA scaffold. The study from articular cartilage defect repaired showed that the group from the autologous ASCs seeded on fibrin-PLGA scaffold had better chondrocyte morphology, tissue integration, continuous subchondral bone, and much thicker newly formed cartilage layer as compared with other groups.

Conclusion: Such modification of PLGA may ultimately enhance the efficacy of tissue engineered scaffolds for cartilage tissue engineering using ASCs.