Osteogenic Differentiation of rabbit bone marrow mesenchymal stem cell in several natural source biomaterials/PLGA hybrid scaffolds

Poly(lactic-co-glycolic acid) (PLGA) has been most widely used owing to its advantages such as good bio- degradability and biocompatibility. Scaffolds made of natural source bio-materials like small intestinal submucosa (SIS), demineralized bone particles (DBP), silk fibroin (SF), and collagen-derived duck's feet collagen (DC) have been proved to be biocompatible. We manufactured composite scaffolds of all these natural biomaterials/PLGA. After making hybrid scaffolds, we measured mechanical strength of scaffolds and observed a porosity and surface morphology of the scaffolds by scanning electronic microscopy. Rabbit bone marrow mesenchymal stem cells (rBMSCs) were cultured, expanded and seeded on scaffolds. Inflammatory responses were checked at 1, 4 and 8 weeks using H&E & Von Kossa staining. DC and SIS group were found to be faster in bone regeneration than other groups. Finally, we have observed that scaffolds using biomaterials are effective in cell attachment, stem cell differentiation, and mineralized tissue formation.