Gold Nanoparticles Promote Proliferation of Human Periodontal Ligament Stem Cells and Have Limited Effects on Cells Differentiation

Figure 6

Osteogenic and adipogenic differentiation of hPDLSCs cocultured with AuNPs (60 nm, 56 μM). Calcified deposition was found in cells treated with and without AuNPs (a, b) for 28 days. The cells incubated with only α-MEM medium were not positive for the staining (c). Compared with the control group, mineralized nodules of the experimental group were larger and more compact. After adipogenic differentiation for 24 days, cells were stained with Oil red O. More dyed red lipid droplets were found in the experimental group (d) and the control group (e) under microscope. In the blank group (f), no staining was found.

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