Conclusion
According to the results, it was demonstrated that MgO/PCL composite nanofibers have considerable osteoinductive potential, and taking together adipose-derived mesenchymal stem cells-MgO/PCL composite nanofibers can be a proper bio-implant to usage for bone regenerative medicine applications. Future in vivo studies are needed to determine this composite therapeutic potential.
Methods
The fabricated composites were characterized via scanning electron microscopy (SEM) imaging of scaffolds and seeded cells, water contact angle, DAPI staining, and MTT assay. Then osteogenic differentiation of adipose-derived mesenchymal stem cells cultured on this composite scaffold was determined by standard osteogenic marker tests, including alkaline phosphatase (ALP) activity, calcium deposition, and expression of osteogenic differentiation genes in the laboratory conditions.
Purpose
Recently, bone tissue engineering as a new strategy is used to repair and replace bone defects due to limitations in allograft and autograft
Results
The SEM analysis demonstrated that the diameter of nanofibers significantly decreased from 1029.25±209.349 µm to 537.83+0.140 nm, with the increase of MgO concentration to 2% (P < 0.05). Initial adhesion and proliferation of the adipose-derived mesenchymal stem cells on MgO/PCL scaffolds were significantly enhanced with the increasing of MgO concentration (P < 0.05). The 2% MgO/PCL nanofibrous scaffold showed significant increase in ALP activity (P < 0.05) and osteogenic-related gene expressions (Col1a1 and OPN) (P < 0.05) in compared to pure PCL and (0, 0.5 and 1%) MgO/PCL scaffolds.