product name CEP-32496
Description: CEP-32496 is a potent and orally efficacious inhibitor of BRAF(V600E) and c-Raf with Kd of 14 nM nM and 39 nM, respectively; it showed little or no inhibition for MEK-1, MEK-2, ERK-1 and ERK-2. In addition to BRAFV600E, CEP-32496 has exhibited high binding affinity for both wild-type BRAF and related CRAF, as well as certain receptor tyrosine kinases of known therapeutic utility, such as Abl-1, c-Kit, Ret, PDGFR-β, and VEGFR-2.
References: J Med Chem, 2012, 55(3), 1082-1105.; Mol Cancer Ther, 2012, 11(4), 930-941.
517.46
Formula
C24H22F3N5O5
CAS No.
1188910-76-0
Storage
-20℃ for 3 years in powder form
-80℃ for 2 years in solvent
Solubility (In vitro)
DMSO: 9 mg/mL (17.4 mM)
Water: <1 mg/mL
Ethanol: <1 mg/mL
Solubility (In vivo)
15% Captisol: 15 mg/mL
Synonyms
other peoduct :References PubMed ID：:http://www.ncbi.nlm.nih.gov/pubmed/19409421
| In Vitro |
In vitro activity: CEP-32496 inhibits A375 cell (BRAFV600E) proliferation with EC50 of 78 nM. CEP-32496 exhibits more sensitive cytotoxicity for tumor cell lines (A375, SK-MEL-28, Colo-205, Colo-679, and HT-144) expressing mutant BRAF than those expressing wild-type BRAF (HCT116, Hs578T, LNCaP, DU145, and PC-3). CEP-32496 inhibits mitogen-activated protein (MAP)/extracellular signal-regulated (ER) kinase (MEK) phosphorylation (pMEK) in human melanoma (A375) and colorectal cancer (Colo-205) cell lines with IC50 of 78 nM and 60 nM, respectively. Kinase Assay: CEP-32496 inhibits A375 cell (BRAFV600E) proliferation with EC50 of 78 nM. CEP-32496 exhibits more sensitive cytotoxicity for tumor cell lines (A375, SK-MEL-28, Colo-205, Colo-679, and HT-144) expressing mutant BRAF than those expressing wild-type BRAF (HCT116, Hs578T, LNCaP, DU145, and PC-3). CEP-32496 inhibits mitogen-activated protein (MAP)/extracellular signal-regulated (ER) kinase (MEK) phosphorylation (pMEK) in human melanoma (A375) and colorectal cancer (Colo-205) cell lines with IC50 of 78 nM and 60 nM, respectively. Cell Assay: A375 Cells are seeded at 104 cells per well in DMEM with 10% fetal calf serum and allowed to attach. The cells are washed with PBS and switched to DMEM with 0.5% of serum and incubated overnight. CEP-32496 is then added at various concentrations with a final DMSO concentration of 0.5% and incubated for 72 h. At the end of incubation, a Cell Titer Blue is added per instructions, and incubation is continued for 3 hours. Remaining viable cells are quantified by measuring the strength of the fluorescence signal using SoftMax Pro (excitation at 560 nm and emission at 590 nm). IC50 values are derived using a 9-point curve fitted with Igor Pro and are presented as mean values from experiments performed in duplicate. Variability between individual values is less than 2-fold. |
|---|---|
| In Vivo | CEP-32496 exhibits good stability in mouse, dog, monkey, and human liver microsomal preparations with measured intrinsic clearance values of <23 (μL/min)/mg and t1/2 > 60 min in all assays. CEP-32496 (30 mg/kg, orally, BID) exhibits tumor stasis and a 40% incidence of partial tumor regressions (PRs) in Colo-205 xenograft mouse model, whereas the 100 mg/kg dose group exhibits both tumor stasis and an 80% incidence of PRs. CEP-32496 (30 mg/kg, orally, BID) leads to a 50% and 75% inhibition of normalized pMEK in tumor lysates at the 2 hours and 6 hours postdose time point, respectively, while a 55 mg/kg dose results in a 75% to 57% inhibition of pMEK at 2 hours through 10 hours post administration in Colo-205 xenograft mouse model. CEP-32496 is orally bioavailable in multiple preclinical species (>95% in rats, dogs, and monkeys). CEP-32496 (100 mg/kg) results in inhibition of pMEK and pERK and sustained tumor stasis and regressions in BRAF(V600E) colon carcinoma xenografts in nude mice. |
| Animal model | Colo-205 xenograft mouse model |
| Formulation & Dosage | Dissolved in 22% HPβCD; 100mg/kg; Oral gavage |
| References | [1] Rowbottom MW, et al. J Med Chem, 2012, 55(3), 1082-1105. [2] James J, et al. Mol Cancer Ther, 2012, 11(4), 930-941. |
