Molecular Weight(MW): 543.95
PF-562271 HCl is the hydrochloride 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.
Cited by 7 Publications
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VEGF and P450 enzyme production in response to FAK or Src inhibitors. MCF10A cells were cultured in LD collagen gels ?vehicle control (V), 10 uM PF-562271 FAK ATP inhibitor (PF) or Src inhibitor PP2 for 24 h. Cells were also lysed and examined for CYP1A1 or CYP4B1 by immunoblot (B and C) and densitometry (D and E). VEGF data are displayed as the mean normalized to the vehicle control, N = 6, 盨EM, *p < 0.003 vs control (A). P450 data are displayed as the mean relative to GAPDH and normalized to the control. N > 4, ±SEM, *p < 0.05 vs respective control (D and E).
Environ Toxicol Pharmacol 2014 39(1), 114-124. PF-562271 HCl purchased from Selleck.
NO production was increased in the netrin-1-over-expressing and recombinant netrin-1-treated MiaPaCa II cells. FAK inhibitor PF-562271 blocks the netrin-1-induced NO production. (*P < 0.05).
Oncotarget, 2016, 7(17):24719-33.. PF-562271 HCl purchased from Selleck.
Rat caudal arterial smooth muscle strips were pre-incubated for 30 min with PF-431396, PF-573228, PF-562271, NVP-TAE226, or sc-203950 (2 or 10 μm) or vehicle and then stimulated with K+ in the continued presence of inhibitor. A, force was recorded continuously, and values at 10 min after K+ addition are expressed relative to control K+-induced contractions. Values represent the mean ± S.E. (n = 6). *, p < 0.001, **, p < 0.002, significantly different from the control K+-induced sustained contractile response. B, tissues were quick-frozen 10 min after the addition of K+ for analysis of Pyk2 autophosphorylation by Western blotting with anti-pTyr-402-Pyk2 (pY402-Pyk2) and FAK autophosphorylation with anti-pTyr-397-FAK (pY397-FAK). Actin was used as the loading control, and anti-Pyk2 and anti-FAK were used to verify the total levels of the two proteins.
J Biol Chem, 2015, 290(14):8677-92.. PF-562271 HCl purchased from Selleck.
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|Description||PF-562271 HCl is the hydrochloride 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.|
|Features||Dual FAK/Pyk2 inhibitor that has been tested in Phase I clinical trials for treatment of pancreatic, head and neck, and prostate cancers.|
PF-562271 binds in the ATP-binding cleft of FAK, forming two of the three “canonical” H-bonds between the inhibitor and main-chain atoms in the kinase hinge region. PF-562271 is potent in an inducible cell-based assay measuring phospho-FAK with IC50 of 5 nM. PF-562271 (3.3 μM) results in G1 arrest of PC3-M cells.  PF-562271 (1 nM) blocks bFGF-stimulated blood vessel angiogenesis as performed in chicken chorioallantoic membrane assays. PF-262271 potently blocks blood vessel sprouting without detectable changes in vascular leakage.  PF-562271 (250 nM) results in complete inhibition of collective A431 cell invasion into collagen gels. 
|In vivo||PF-562271 (< 33 mg/kg p.o.) inhibits FAK phosphorylation in tumors in a dose- and time-dependent manner in U87MG-bearing mice. PF-562271 (50 mg/kg p.o. bid) results in 86% tumor growth inhibition in BxPc3 xenografts mice and 45% tumor growth inhibition in PC3-M xenografts mice. PF-562271 (25 mg/kg, bid) results in 2-fold greater apoptosis in treated tumors in mice bearing H125 lung xenografts.  PF-562271 (33 mg/kg, p.o.) inhibits extensive movement of the tumor cells over 24 hours in mice. PF-562271 (33 mg/kg, p.o.) results in altered E-cadherin dynamics in mice, which correlates with reduced E-cadherin–dependent collective cell movement.  PF-562271 (25 mg/kg, p.o. bid) results in 62% tumor growth inhibition in PC3M-luc-C6 subcutaneuous local implant xenograft mouse model.  PF-562,271 (5 mg/kg, oral) results in significant and similar increases in osteocalcin and cancellous bone parameters and a decrease in tumor growth and signs of bone healing in rats implanted with MDA-MB-231 cells in the tibia. |
|In vitro||DMSO||100 mg/mL (183.84 mM)|
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