SLC2A3 and glioblastoma: Analyses of quantitative real-time PCR confirmed that S/G deprivation significantly induced the mRNA expression levels of GLUT1, GLUT 3, HK2, and PFKFB2 in glioma stem cells (GSCs) and GBM cells, including U87MG, LN18, and A172 (Fig. 2A).