Imatinib is a multi-target inhibitor of v-Abl, c-Kit, and PDGFR (IC50: 0.6 μM, 0.1 μM, and 0.1 μM, respectively). Imatinib is used to treat chronic myelogenous leukemia (CML), gastrointestinal stromal tumors (GISTs), and a number of other malignancies.

In vitro assays for inhibition of a panel of tyrosine and serine/threonine protein kinases show that Imatinib inhibits the v-Abl tyrosine kinase and PDGFR potently (IC50: 0.6 and 0.1 μM, respectively). Imatinib inhibits the SLF-dependent activation of wild-type c-kit kinase activity with an IC50 for these effects of approximately 0.1 μM, which is similar to the concentration required for inhibition of PDGFR. Imatinib exhibits growth-inhibitory activity on the human bronchial carcinoid cell line NCI-H727 and the human pancreatic carcinoid cell line BON-1 (IC50: 32.4 and 32.8 μM, respectively) [1][2][3].

in vivo: In the PS-ASODN group, tumor growth was inhibited by 59.437%, which was markedly higher than in the imatinib group (11.071%) and liposome negative control group. Cohorts of mice were maintained on chow formulated with imatinib 0.5 mg/g or control chow for the duration of the experiment [4][5][6].