MK-2461 is a potent inhibitor of c-Met, Ron, Flt1, Flt 3, PDGFRβ, and Mer with IC50 of 2.5 nM, 7 nM, 10 nM, 22 nM, 22 nM, and 24 nM, respectively. MK-2461 also exhibits significant activities toward several other kinases including FGFR1, FGFR2, FGFR3, KDR, TrkA, TrkB, and Flt4 with IC50 of 65 nM, 39 nM, 50 nM, 44 nM, 46 nM, 61 nM, and 78 nM, respectively. MK-2461 preferentially binds to the activated c-Met, and is slightly more potent against five naturally occurring oncogenic human c-Met mutants (N1100Y, Y1230C, Y1230H, Y1235D, and M1250T) compared with wild-type c-Met. MK-2461 significantly inhibits constitutive and ligand-induced phosphorylation of the juxtamembrane domain (Y1003) and the COOH-terminal docking site (Y1349/Y1365) of c-Met, as well as phosphorylation of AKT (S473) and ERK1/2 (T202/Y204), without affecting c-Met activation loop (Y1234/35) phosphorylation in GTL-16 cells. MK-2461 displays potent antiproliferative activity against a variety of tumor cell lines with IC50 of 0.1-30 μM. Orally administered MK-2461 inhibits c-Met phosphorylation in vivo, and tumor growth of GTL-16 xenografts, as well as the growth of NIH3T3 tumors harboring murine equivalents of human c-Met Y1230H and M1250T mutants.
|Cell lines||SW480, HT29, SW620, Colo 205, HCT116, HCT15, Colo 201, SCC-9, H1993, H1048, GTL-16, SNU15, et al.|
|Preparation method||Exposing cells to various concentrations of MK-2461 for 72 hours. Using the ViaLight PLUS kit to mearsure the viability of tumor cells .|
|Concentrations||Dissolved in DMSO, final concentrations ~100 μM|
|Incubation time||72 hours|
|Animal models||Female nude CD-1 nu/nu mice inoculated s.c. with GTL-16 cells or c-Met mutant-transformed NIH3T3 cells|
|Formulation||Dissolved in DMSO, and diluted in saline|
|Administration||Orally once or twice daily|
|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 resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 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 resveratrol of 11.2 mg/kg.
|Solubility||DMSO 90 mg/mL|
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Altiratinib(DCC-2701) is a novel c-MET/TIE-2/VEGFR inhibitor; effectively reduce tumor burden in vivo and block c-MET pTyr(1349)-mediated signaling, cell growth and migration as compared with a HGF antagonist in vitro.
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