For research use only. Not for use in humans.
Catalog No.S2672 Synonyms: PF-562271 Besylate
Molecular Weight(MW): 665.66
PF-00562271 Besylate is the benzenesulfonate salt of PF-562271, which is a potent, ATP-competitive, reversible inhibitor of FAK with IC50 of 1.5 nM, ~10-fold less potent for Pyk2 than FAK and >100-fold selectivity against other protein kinases, except for some CDKs. Phase 1.
Selleck's PF-00562271 Besylate has been cited by 8 publications
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Pharmacological inhibition of optoFAK with the ATP-competitive FAK inhibitor PF-00562271. OptoFAK expressing SC4 cells were serum-starved for 24 h in the absence or presence of PF-00562271 (1 mM) before being illuminated for 10 min with blue light (451 nm, 2 μmol m-2 s-1) or kept in the dark.
Cell Signal, 2018, 42:176-183. PF-00562271 Besylate purchased from Selleck.
The migration index enhanced by CX3CL1 was dramatic reduced using Bosutinib and PF-00562271. CX3CL1-only group as control. Scale bar = 200 μm. The experiments were repeated three times. *P< 0.05, **P< 0.01, ***P< 0.001, ****P< 0.0001.
J Cancer, 2018, 9(19):3603-3612. PF-00562271 Besylate purchased from Selleck.
SGC-7901 and MGC-803 cells were treated with OLFM4-sh lentivirus or FAK inhibitor (PF) alone, or co-treated with OLFM4-sh lentivirus and PF. Cellular invasive ability was measured by transwell assay after indicated treatment. Data are expressed as mean ± standard deviation from three independent experiments. One was analysis of variance (ANOVA) with Bonferroni T post-test was used to analysis the data. *P < 0.05, ***P < 0.001; ##P < 0.01, ###P < 0.001 VS. OLFM4-sh group.
BMB Rep, 2015, 48(11):630-5. PF-00562271 Besylate purchased from Selleck.
Purity & Quality Control
Choose Selective FAK Inhibitors
|Description||PF-00562271 Besylate is the benzenesulfonate salt of PF-562271, which is a potent, ATP-competitive, reversible inhibitor of FAK with IC50 of 1.5 nM, ~10-fold less potent for Pyk2 than FAK and >100-fold selectivity against other protein kinases, except for some CDKs. Phase 1.|
PF-562271 Besylate shows the selective inhibitory effects on FAK and Pyk2 tyrosine kinase activity with IC50 of 1.5 nM and 14 nM, respectively. And in cell-based assays, the IC50 of PF-562271 is shown to be 5 nM for FAK, which is more selective compared to other kinase targets.  In 2 dimensional (2D) cultures, PF-562271 results in a dose-dependent cell proliferation inhibition in FAK WT, FAK−/− and FAK kinase-deficient (KD) cells with IC50 of 3.3 μM, 2.08 μM and 2.01 μM, respectively. 
|In vivo||In several human s.c. xenograft models, PF-562271 exhibits dose-dependent tumor growth inhibition, and produces maximum tumor inhibition for PC-3M, BT474, BxPc3, and LoVo ranging from 78% to 94% inhibition at doses of 25 to 50 mg/kg twice daily, without weight loss, morbidity, or death.  PF-562271 (25 mg/kg by p.o.) leads to a significant decrease in tumor progression in both subcutaneous and bone metastasis PC3M-luc-C6 xenograft models.  In a Huh7.5 hepatocellular carcinoma xenograft model, combination therapy of sunitinib and PF-562271 targets angiogenesis and tumor aggressiveness, and produces more significant anti-tumor effect than single agent by blocking tumor growth and impacting the ability of the tumor to recover upon withdrawal of the therapy. |
Recombinant kinase assay and enzyme kinetics :Briefly, purified-activated FAK kinase domain (amino acid 410–689) is reacted with 50 μM ATP and 10 μg per well of a random peptide polymer of Glu and Tyr, p(Glu/Tyr), in kinase buffer [50 mM HEPES (pH 7.5), 125 mM NaCl, and 48 mM MgCl2] for 15 minutes. Phosphorylation of p(Glu/Tyr) is challenged with serially diluted PF-562271 at 1/2-Log concentrations starting at a top concentration of 1 μM. Each concentration is tested in triplicate. Phosphorylation of p(Glu/Tyr) is detected with a general antiphospho-tyrosine (PY20) antibody followed by horseradish peroxidase (HRP)-conjugated goat anti-mouse IgG antibody. HRP substrate is added, and absorbance readings at 450 nm are obtained after addition of stop solution (2 M H2SO4). IC50 values are determined using the Hill-Slope Model. Broad kinase selectivity profiling is performed in house and by using the KinaseProfiler Selectivity Screening Service available through UpState Biotechnology.
|In vitro||DMSO||14 mg/mL warmed (21.03 mM)|
|In vivo||Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
4% DMSO+30% PEG 300+ddH2O
For best results, use promptly after mixing.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
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* When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and MSDS / COA (available online).
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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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Frequently Asked Questions
We are planning both in vitro and in vivo experiments and want to know how to reconstitute the drug for these purposes?
PF-00562271 has poor solubility in DMSO and water. Its solubility in DMSO is only 0.4mg/ml. In a previous literature report (http://www.ncbi.nlm.nih.gov/pubmed/18339875), the author used 5% Gelucire to formulate the compound. You can also consider other co-solvents such as PEG400, CMC, Tween80, and Captisol.
Can you provide with a few common vehicles for PF-00562271, S2672 for use as oral gavage?
S2672 PF-00562271 can be dissolved in 0.5% CMC Na at 30 mg/ml as a suspension. If 4% DMSO can be used in your experiment, it will help dissolving the suspension more homogeneously.