MAPK3 and glioblastoma: We previously found that β-elemene arrested C6 and U87 glioblastoma cells in the G0/G1 phase of the cell cycle and inhibited cell proliferation by regulating the glia maturation factor β/mitogen-activated protein kinase kinase 3/6/p38 and extracellular signal-regulated kinase 1/2/B cell lymphoma 2/survivin pathways [7–10].