| Size | Price | Stock | Qty |
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| 5mg |
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| 10mg |
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| 25mg |
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| 50mg |
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| 100mg |
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| 250mg |
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Purity: ≥98%
PF-5274857 (PF5274857; PF 5274857) is a novel, potent, orally bioavailable and selective Smoothened (Smo) antagonist with potential antineoplastic activity. Its IC50s and Ki values for the Hedgehog (Hh) signaling pathway are 5.8 nM and 4.6 nM, respectively.
| Targets |
Smo ( IC50 = 5.8 nM ); Smo ( Ki = 4.6 nM )
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| ln Vitro |
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| ln Vivo |
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| Enzyme Assay |
In Dulbecco's Modified Eagles Medium (DMEM) supplemented with 10% FBS, Pen–Strep, and 0.1 mg/mL hygromycin, HEK293 cells overexpressing human Smo (amino acids 181–787) are grown to 90% confluence. The cell pellet is resuspended in membrane preparation buffer (50 mM Tris-HCl, pH 7.5, 250 mM sucrose with Roche complete protease cocktail) and homogenized following washing with cold Dulbeccos PBS. After centrifuging the homogenate, the cell pellet is resuspended in assay buffer, which contains 0.1% protease-free bovine serum albumin, 50 mM Tris-HCl, pH 7.5, 100 mM NaCl, 25 mM MgCl2, and 1 mM EDTA. The homogenization process is carried out in a glass tissue grinder. The Pierce BCA protein assay is used to determine the total protein in the membrane preparation that contains Smo. In order to perform the competitive binding assay, 96-well GF/B filter plates are pre-wetted with 100 μL of assay buffer for ten minutes, after which the filter is removed. After that, the following reagents are added: 50 μL of membrane preparation (40 μg total protein), 10 μL serial dilutions of compound, 20 μL of 3H-Smo antagonist (3 nM final concentration), and 20 μL of assay buffer. After two hours of room temperature incubation, the plates are cleaned and vacuum dried. Following an hour-long drying process in an oven set at 60°C, 45 μL of Microscint 20 is added to the plates, which are then incubated for 30 to 1 hour at room temperature before being counted using a TopCount scintillation counter. Software called GraphPad Prism is used to analyze the data.
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| Cell Assay |
The knockout DMEM containing 10% heat-inactive FBS, 2 mM l-glutamine, and 0.55 mM β-mercaptoethanol is added to Gli-Luc/MEF cells during growth until 90% confluence. Day 1: Trypsinized cells are seeded at a concentration of 7,500 cells per well in white 384-well plates using 20 μL of OptiMEM media per well, supplemented with 1% heat-inactive FBS and 1 mM sodium pyruvate. Overnight, plates are incubated at 37 °C with 5% CO2. On day 2, recombinant mouse Sonic Hedgehog is added to the cells at a final concentration of 2 μg/mL, after PF-5274857 is added at a final concentration ranging from 3 μM to 50 pM at a 3-fold serial dilution. PF-5274857 and Shh are added to the cells and incubated for 48 hours at 37 °C with 5% CO2. Day 4 luciferase assays using the Bright-Glo Luciferase Assay System are carried out. To summarise, 25 μL of Bright-Glo luciferase reagent is introduced into every well of the 384-well plate holding media. After five minutes of room temperature storage, plates are read using a luminescence plate reader. PF-5274857's IC50 value is computed.
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| Animal Protocol |
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| References |
| Molecular Formula |
C20H25CLN4O3S
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| Molecular Weight |
436.96
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| Exact Mass |
436.13
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| Elemental Analysis |
C, 54.98; H, 5.77; Cl, 8.11; N, 12.82; O, 10.98; S, 7.34
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| CAS # |
1373615-35-0
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| Related CAS # |
PF-5274857 hydrochloride; 1613439-62-5
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| Appearance |
Light yellow to yellow solid powder
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| SMILES |
CC1=CC(=C(N=C1)C2=CC(=NC=C2Cl)N3CCN(CC3)C(=O)CCS(=O)(=O)C)C
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| InChi Key |
BBVNTTZIOTWDSV-UHFFFAOYSA-N
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| InChi Code |
InChI=1S/C20H25ClN4O3S/c1-14-10-15(2)20(23-12-14)16-11-18(22-13-17(16)21)24-5-7-25(8-6-24)19(26)4-9-29(3,27)28/h10-13H,4-9H2,1-3H3
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| Chemical Name |
1-[4-[5-chloro-4-(3,5-dimethylpyridin-2-yl)pyridin-2-yl]piperazin-1-yl]-3-methylsulfonylpropan-1-one
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| Synonyms |
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| HS Tariff Code |
2934.99.9001
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| Storage |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month |
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| Shipping Condition |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
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| Solubility (In Vitro) |
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| Solubility (In Vivo) |
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| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 2.2885 mL | 11.4427 mL | 22.8854 mL | |
| 5 mM | 0.4577 mL | 2.2885 mL | 4.5771 mL | |
| 10 mM | 0.2289 mL | 1.1443 mL | 2.2885 mL |
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.
Calculation results
Working concentration： mg/mL；
Method for preparing DMSO stock solution： mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.
Method for preparing in vivo formulation:：Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O，mix and clarify.
(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.
 Inhibition of smoothened by PF-5274857.Mol Cancer Ther.2012 Jan;11(1):57-65.
Imaging of Hh pathway in brain of Gli-luc transgenic mice.Mol Cancer Ther.2012 Jan;11(1):57-65. |
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 Pharmacokinetics and biomarker response in single dose study.Mol Cancer Ther.2012 Jan;11(1):57-65.
Modulation of Hh pathway genes in tumor (A) and skin (B) in Ptch+/−p53−/−medulloblastoma allograft mice treated with a single dose of 30 mg/kg PF-5274857.Mol Cancer Ther.2012 Jan;11(1):57-65. |
 PF-5274857 penetrates blood–brain barrier in primary Ptch+/−p53−/−medulloblastoma mice.
In vivoeffects of PF-5274857 in Ptch+/−p53+/−medulloblastoma allograft mice.Mol Cancer Ther.2012 Jan;11(1):57-65. |
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