Home Protein Tyrosine Kinase c-Met inhibitor - FGFR inhibitor - PDGFR inhibitor - RON inhibitor MK-2461 For research use only.

MK-2461

MK-2461 is a potent, multi-targeted inhibitor for c-Met(WT/mutants) with IC50 of 0.4-2.5 nM, less potent to Ron, Flt1; 8- to 30-fold greater selectivity of c-Met targets versus FGFR1, FGFR2, FGFR3, PDGFRβ, KDR, Flt3, Flt4, TrkA, and TrkB. Phase 1/2.

MK-2461 Chemical Structure

MK-2461 Chemical Structure

CAS No. 917879-39-1

Purity & Quality Control

MK-2461 Related Products

Signaling Pathway

c-Met Signaling Pathways

c-Met Signaling Pathway

Biological Activity

Description MK-2461 is a potent, multi-targeted inhibitor for c-Met(WT/mutants) with IC50 of 0.4-2.5 nM, less potent to Ron, Flt1; 8- to 30-fold greater selectivity of c-Met targets versus FGFR1, FGFR2, FGFR3, PDGFRβ, KDR, Flt3, Flt4, TrkA, and TrkB. Phase 1/2.
Features Preferentially binds to activated c-Met, distinguished from other known ATP-competitive tyrosine kinase inhibitors (which bind to inactive and active kinases with similar affinity).
Targets
c-Met (M1250T) [1] c-Met (Y1235D) [1] c-Met (Y1230H) [1] c-Met (N1100) [1] c-Met (Y1230C) [1] Click to View More Targets
0.4 nM 0.5 nM 1.0 nM 1.5 nM 1.5 nM
In vitro
In vitro MK-2461 also potently inhibits 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. Compared with wild-type c-Met, MK-2461 more potently inhibits the activity of oncogenic c-Met kinase mutants such as N1100Y, Y1230C, Y1230H, Y1235D, and M1250T with IC50 of 1.5 nM, 1.5 nM, 1.0 nM, 0.5 nM, and 0.4 nM, respectively. MK-2461 binds more strongly to phosphorylated c-Met than to unphosphorylated c-Met. MK-2461 potently inhibits ATP-induced autophosphorylation of the COOH-terminal docking domain of c-Met, but not the activation loop. In contrast, MK-2461 inhibits phosphorylation of the activation loop of FGFR2 (Y653/Y654) in Kato III cells and PDGFRα (Y849) in H1703 cells with IC50 of <0.3 μM. MK-2461 inhibits HGF-induced mitogenesis of 4MBr-5 cells with IC50 of 204 nM, and HGF-induced migration of HPAF II cells with IC50 of 404 nM, as well as HGF-induced branching tubulogenesis of MDCK cells. In addition, MK-2461 potently inhibits IL-3-independent proliferation of 32D cells transformed with Tpr-Met or Tpr-Met (Y362C) mutant with IC50 of ~100 nM. MK-2461 significantly inhibits the proliferation of a large panel of tumor cell lines, especially potent against tumor cells harbored genomic amplification of MET or FGFR2. [1]
Kinase Assay Time-resolved fluorescence resonance energy transfer assay
The c-Met–catalyzed phosphorylation of N-biotinylated peptide (EQEDEPEGDYFEWLE-CONH2) is measured using a time-resolved fluorescence resonance energy transfer assay. [2] The MK-2461 IC50 for Ron, Mer, Flt1, Flt3, Flt4, KDR, PDGFRβ, FGFR1, FGFR2, FGFR3, TrkA, and TrkB are determined using time-resolved fluorescence resonance energy transfer assays similar to the c-Met kinase assay.
Cell Research Cell lines SW480, HT29, SW620, Colo 205, HCT116, HCT15, Colo 201, SCC-9, H1993, H1048, GTL-16, SNU15, et al.
Concentrations Dissolved in DMSO, final concentrations ~100 μM
Incubation Time 72 hours
Method Cells are exposed to various concentrations of MK-2461 for 72 hours. The viability of tumor cells is measured using the ViaLight PLUS kit.
In Vivo
In vivo MK-2461 treatment significantly inhibits c-Met (Y1349) phosphorylation in GTL-16 tumors with IC50 of ~1 μM. Oral administration of MK-2461 at 10 mg/kg, 50 mg/kg, and 100 mg/kg twice daily as well as 200 mg/kg once daily effectively suppresses tumor growth of GTL-16 xenografts in mice by 62%, 77%, 75%, and 90%, respectively. Similarly, MK-2461 treatment at 134 mg/kg twice daily inhibits the growth of NIH3T3 tumors harboring c-Met single nucleotide mutants T3936C and T3997C, by 78% and 62%, respectively. [1]
Animal Research Animal Models Female nude CD-1 nu/nu mice inoculated s.c. with GTL-16 cells or c-Met mutant-transformed NIH3T3 cells
Dosages ~134 mg/kg
Administration Orally once or twice daily
NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT00496353 Completed
Neoplasm
Merck Sharp & Dohme LLC
 June 2007 Phase 1|Phase 2
NCT00518739 Completed
Advanced Cancer
Merck Sharp & Dohme LLC
 February 2007 Phase 1

Chemical Information & Solubility

Molecular Weight 495.55 Formula

C24H25N5O5S
CAS No. 917879-39-1 SDF Download MK-2461 SDF
Smiles CN1C=C(C=N1)C2=CC3=C(C=CC4=C(C3=O)C=C(C=C4)NS(=O)(=O)N(C)CC5COCCO5)N=C2
Storage (From the date of receipt)

In vitro
Batch:

DMSO : 99 mg/mL ( (199.77 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : Insoluble

Ethanol : Insoluble


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Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

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