Tyrosine kinase
Tyrosine kinases are enzymes responsible for the activation of many proteins by signal transduction cascades. The proteins are activated by adding a phosphate group to the protein (phosphorylation). TKIs are typically used as anti-cancer drugs.
Tyrosine kinase signaling through the vascular endothelial growth factor receptor 2 (VEGFR2), platelet derived growth factor receptor- α (PDGFR-α) and KIT cell surface receptors mediates neo-angiogenesis and contributes to cancer cell survival in recurrent anaplastic and low-grade glioma.