MK-8353 (SCH900353) is an orally bioavailable, selective, and potent ERK1/2 inhibitor, with IC50 values of 23.0 nM and 8.8 nM, respectively. MK-8353 is a weak inhibitor of hERG current, producing 16% inhibition at 0.6 μM. The IC50 values for inhibiting cell prolifertion are 371, 51, and 23 nM in A2058, HT-29, and Colo-205 cells respectively. MK-8353 also shows potent antitumor activity against various cancer cell lines, such Malme-3M cells (Melanoma), Colo-205 cells (Colon), NCI-H292 cells (Lung), A-549 cells (NSCLC), 8505C cells (Thyroid), SW-626 cells (Ovarian), with EC50s of 21 nM, 19 nM, 130 nM, 230 nM, 210 nM, 108 nM.
In vivo, MK-8353 (60 mg/kg, p.o., bid (twice daily)) causes at least 50% tumor growth inhibition or regression in 83% of the animal models bearing different tumor cells.
|Body Surface Area (m2)||0.007||0.025||0.15||0.05||0.02||0.5|
|Animal A (mg/kg) = Animal B (mg/kg) multiplied by||Animal B Km|
|Animal A Km|
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
|Solubility||DMSO ≥ 50 mg/mL|
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|ERK1/2 inhibitor 1
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