Home Protein Tyrosine Kinase c-Met inhibitor PF-04217903 For research use only.

PF-04217903

PF-04217903 is a selective ATP-competitive c-Met inhibitor with IC50 of 4.8 nM in A549 cell line, susceptible to oncogenic mutations (no activity to Y1230C mutant). Phase 1.

PF-04217903 Chemical Structure

PF-04217903 Chemical Structure

CAS No. 956905-27-4

Purity & Quality Control

PF-04217903 Related Products

Signaling Pathway

c-Met Signaling Pathways

c-Met Signaling Pathway

Cell Data

Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
human A549 cells Function assay 1 h Antagonist activity at c-MET receptor in human A549 cells assessed as inhibition of autophosphorylation after 1 hr by ELISA, IC50=4 nM 22924734
Click to View More Cell Line Experimental Data

Biological Activity

Description PF-04217903 is a selective ATP-competitive c-Met inhibitor with IC50 of 4.8 nM in A549 cell line, susceptible to oncogenic mutations (no activity to Y1230C mutant). Phase 1.
Targets
c-Met [1]
(A549 cells)
4.8 nM
In vitro
In vitro Being more selective than staurosporine or PF-02341066, PF-04217903 displays >1000-fold selectivity for c-Met over a panel of 208 kinases, although more susceptible to oncogenic mutations of c-Met that attenuate potency than PF-02341066. In addition to WT c-Met, PF-04217903 displays similar potency to inhibit the activity of c-Met-H1094R, c-Met-R988C, and c-Met-T1010I with IC50 of 3.1 nM, 6.4 nM, and 6.7 nM, respectively, but has no inhibitory activity against c-Met-Y1230C with IC50 of >10 μM. [1] PF-04217903 in combination with sunitinib significantly inhibits endothelial cells, but not the tumor cells B16F1, Tib6, EL4, and LLC [2] PF-04217903 significantly inhibits the clonogenic growth of LXFA 526L and LXFA 1647L with IC50 values of 16 nM, and 13 nM, respectively, yielding an additive effect when in combination with cetuximab. [3] PF-04217903 potently inhibits c-Met-driven processes such as cell growth, motility, invasion, and morphology of a variety of tumor cells. PF-04217903 treatment (2 μM) increased cell death of GTL-16 cells, which involves the downregulation of phosphorylated 4E-BP1, ERK/MAPK associated proteins and PI3K/AKT pathway. [4]
Kinase Assay Cellular c-Met phosphorylation ELISA
A549 cells with endogenous human WT c-Met are seeded in 96-well plates in growth medium and cultured overnight. On the second day of the assay, the growth medium is replaced with serum-free medium (with 0.04% BSA). Serial dilutions of PF-04217903 are added to each well, and cells are incubated at 37 °C for 1 hour. Then 40 ng/mL HGF is added to the cells for 20 minutes. The cells are washed once with HBSS supplemented with 1 mM Na3VO4, and protein lysates are generated from cells using lysis buffer. Phosphorylation of c-Met is assessed by an ELISA method utilizing capture antibodies specific for c-Met and a detection antibody specific for phosphorylated tyrosine residues. Antibody-coated plates are incubated in the presence of protein lysates at 4 °C overnight and washed with 1% Tween 20 in PBS seven times. HRP-PY20 (horseradish peroxidase-conjugated anti-phosphotyrosine) is diluted 1:500 in blocking buffer and added to each plate for 30 minutes. Plates are then washed again, and TMB peroxidase substrate is added to initiate the HRP-dependent colorimetric reaction and the reaction stopped by addition of 0.09 N H2SO4. ELISA end points are the absorbance measured at 450 nm using a spectrophotometer. IC50 value is calculated by concentration-response curve fitting utilizing a Microsoft Excel-based four-parameter analytical met
Cell Research Cell lines B16F1, Tib6, EL4, and LLC, HUVECs and C166 cells
Concentrations Dissolved in DMSO, final concentrations ~2 μM
Incubation Time 4 days
Method Cells are treated with different concentrations PF-04217903 for 4 days. Cell proliferation is assessed by counting content of each well using a Coulter counter machine.
In Vivo
In vivo Although unable to inhibit tumor growth in the sunitinib-sensitive B16F1 and Tib6 tumor models, the combination of PF-04217903 and sunitinib significantly inhibits tumor growth in sunitinib-resistant EL4, and LLC tumor models compared with sunitinib or PF-04217903 alone by significantly blocking vascular expansion, indicating a functional role for HGF/c-Met axis in the sunitinib-resistant tumors. [2]
Animal Research Animal Models Immunodeficient nude mice (nu/nu) subcutaneously implanted with tumor cell lines B16F1, EL4, LLC, or Tib6
Dosages 45 mg/kg
Administration Orally
NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT00706355 Terminated
Neoplasms
Pfizer
 August 2008 Phase 1

Chemical Information & Solubility

Molecular Weight 372.38 Formula

C19H16N8O
CAS No. 956905-27-4 SDF Download PF-04217903 SDF
Smiles C1=CC2=C(C=CC(=C2)CN3C4=NC(=CN=C4N=N3)C5=CN(N=C5)CCO)N=C1
Storage (From the date of receipt)

In vitro
Batch:

DMSO : 74 mg/mL ( (198.72 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : Insoluble

Ethanol : Insoluble


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In vivo
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Tech Support

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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