PTK2 and glioblastoma: In contrast, rGO/TUD caused a decrease in viability in U87 glioblastoma cells, but lower than in the case of the aforementioned flakes, as well as inhibition of migration, reduced mobility, an increase in mRNA expression of integrin α5 and N-cadherin, and a decrease in the extrusion pressure of β-catenin and FAK.