DUSP1 and glioblastoma: Further qRT-PCR validated the significant increase of DUSP1 gene expression in U87 GBM cells and G179 GSCs treated with 1 μM CP-673451, compared to levels in the DMSO control (6.4 ± 0.34 (p ≤ 0.0001), 2.5 ± 1.0 (ns), respectively) (Supplementary Fig. 4A, B)