TEK and glioblastoma: To further extend our findings, we measured the mRNA levels of gsk1 and wnt3a as well as several related neurogenic genes NeuD1, Neurogenin, and Tuj1, along with the endothelial genes kdrl, fli1a, VE-cad, and tie2 in GBM neural stem cells at 48 h after serum-induced differentiation with or without ETV2 overexpression.