Figure 4.
Cell proliferation and osteogenesis-related gene expression.
Notes: (A) Cell proliferation of samples after 1, 4, and 7 days of incubation measured by the CellTiter-Blue Cell Viability Assay. (B) Gene expression, including ALP, COL-1, RUNX2, and OCN in primary osteoblasts cultured on titanium surfaces 3, 7, and 14 days post-incubation. Data were generated by real-time PCR and are expressed in mean ± SD relative to GAPDH. *P<0.05 vs TNS; #P<0.05 vs TNS-PEM; &P<0.05 vs TNS-PEM-IGF1-50.
Abbreviations: PEM, polyelectrolyte multilayer; TNS, titania nanosheet; TNS-PEM, specimens without IGF1; TNS-PEM-IGF1-50, specimens with 50 ng/mL of IGF1; TNS-PEM-IGF1-100, specimens with 100 ng/mL of IGF1; ALP, alkaline phosphatase.