Research Area
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Description
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Solid tumours |
Biological Activity
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Description
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AMG-208 is a highly selective c-Met inhibitor with IC50 of 9.3 nM. |
Targets
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c-Met |
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IC50 |
9.3 nM [1] |
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In Vitro
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AMG-208 shows the potent inhibition of kinase c-Met activity with IC50 of 9 nM in a cell-free assay. Besides, AMG-208 treatment also leads to the inhibition of HGF-mediated c-Met phosphorylation in PC3 cells with IC50 of 46 nM. [1]Incubation of AMG-208 with rat and human liver microsomes in the presence of NADPH qualitatively yields C6-phenylarene oxidation products as the major metabolites. [1] Pre-incubation of AMG-208 with human liver microsomes for 30 minutes shows a potent time-dependent inhibition for CYP3A4 metabolic activity with IC50 of 4.1 μM, which is an eightfold decrease relative to the IC50 (32 μM) without preincubation. [2] AMG-208 is identified to be a c-MET and RON dual selective inhibitor. [3] |
In Vivo
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In male Sprague?Dawley rats, AMG-208 (0.5 mg/kg i.v.) shows a high bioavailability with Cl of 0.37 L/h/kg, Vss of 0.38 L/kg and T1/2 of 1 hour, while AMG-208 (2 mg/kg i.v.) shows a bioavailability with AUC0→∞ of 2517 ng·h/mL and F of 43%, respectively. [1] |
Clinical Trials
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AMG-208 is currently in Phase I clinical trials in patients with Advanced Solid Tumors. |
Features
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Protocol
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Kinase Assay
[1]
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In Vitro Kinase Assay |
IC50 measurements versus c-Met kinase and its mutants are determined using homogenous time-resolved fluorescence (HTRF) assays. AMG-208 is tested in a 10-point dose-response curve for each enzyme using an ATP concentration of two-thirds Km for each. Most assays consists of enzyme mixed with kinase reaction buffer [20 mM Tris-HCl (pH 7.5), 10 mM MgCl2, 5 mM MnCl2, 100 mM NaCl, 1.5 mM EGTA]. A final concentration of 1 mM DTT, 0.2 mM NaVO4, and 20 μg/mL BSA is added before each assay. For all assays, 5.75 mg/mL streptavidin-allophycocyanin and 0.1125 nM Eu-PT66 are added immediately before the HTRF reaction. Plates are incubated for 30 minutes at room temperature and read on a Discovery instrument Molecules are tested in a 10-point serial dilution for each c-Met construct using an ATP concentration of two thirds Km value that is determined for each enzyme preparation and calculated using the Eadie-Hofstee and Lineweaver-Burke methods. |
Animal Study
[1]
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Animal Models |
Male Sprague-Dawley rats |
Formulation |
AMG-208 is dissolved in DMSO. |
Doses |
≤2 mg/kg |
Administration |
Administered via i.v. and p.o. |
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