Preparation and Osteogenic Properties of β-TCP+HA+GO Composites

Bone defect repair is a hot topic in tissue engineering, and the development of economical and effective bone scaffold materials to achieve the goal of repairing bone defects is an important task for researchers. In this experiment, fresh bovine cancellous bone was used as a xenogeneic bone material. After two high-temperature calcinations, β-tricalcium phosphate (β-TCP) material was obtained. An in-situ co-precipitation method was employed to prepare hydroxyapatite+graphene oxide (HA+GO) composite material. Then, the β-TCP material was immersed in the HA+GO composite material solution to prepare β-TCP+HA+GO composite material. The surface modification of β-TCP material with HA and GO improved the elastic modulus of the raw material. In vitro cell showed that the composite material was non-toxic, biocompatible, and promoted the proliferation of MC3T3-E1 cells on the β-TCP+HA+GO material. Finally, it was found that β-TCP+HA+GO composite material effectively stimulated the actin and mineralization behavior of MC3T3-E1 cells, and promoted the expression of bone-related factors such as Alkaline phosphatase (ALP), Collagen I (COLI), Osteocalcin (OCN), Bone Morphogenetic Protein-2 (BMP-2), and Bone Morphogenetic Protein-7 (BMP-7) in MC3T3-E1 cells In conclusion, β-TCP+HA+GO composite material can be applied in the biomedical field as a bone substitute or repair material.