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Fig. 4 | Journal of Translational Medicine

Fig. 4

From: Graphene oxide suppresses the growth and malignancy of glioblastoma stem cell-like spheroids via epigenetic mechanisms

Fig. 4

Graphene oxide inhibits the cell viability and promotes the differentiation of U251 GSCs. a U251 cells were cultured in a serum-free environment. Sphere morphology was photographed using light microscopy. Scale bar = 100 μm. b The expression of SOX2, CD133 and OCT4 in glioblastoma stem-like cells was increased during different periods. c Morphological appearance of U251 GSCs with or without treatment with GO for 2 days. The GSC spheres treated with GO showed adherent growth. Scale bar = 100 μm. d An MTT assay showed the cell viability of U251 GSCs with or without treatment with different dosages of GO for 2, 4, and 6 days. e Quantification of the mRNA levels of the stem cell markers SOX2 and differentiation markers (GFAP and TUJ1) in U251 GSCs with or without treatment with 0, 5, 12.5, 25 and 50 μg/ml GO respectively. *p < 0.05, **p < 0.01. Data represent the mean ± SEM of at least three independent experiments

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