Fig. 1 · Structure

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PF 431396

Cat. No. A11142 CAS 717906-29-1

FAK/PYK2 inhibitor

PF 431396 is a dual focal adhesion kinase (FAK) and proline-rich tyrosine kinase 2 (PYK2) inhibitor (IC50 values are 2 and 11 nM respectively).

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Biological Activity

Target & Activity

Target Activity Value
FAK 2 nM
PYK2 11 nM

Cellular Effect

Cell Line Activity Value Description Reference
BT-20 IC50 6.2 μM Anticancer activity against human BT-20 cells assessed as cell growth inhibition by MTT assay [PMID: 33650861]

In Vitro Studies

PF 431396 decreased cell adhesion in MV4-11 parental cells in a dose-dependent manner compared with untreated cells. In A375 melanoma cells, PF 431396 treatment under dual FAK/Pyk2 inhibition did not modify invadopodia activity compared with control conditions. In RAW 264.7 macrophages, post-phagocytosis treatment with PF 431396 significantly decreased the proportion of cells with a high bacterial burden compared with untreated cells. In MV4-11R cells compared with mock-treated MV4-11R cells, PF 431396 treatment resulted, in the majority of cases, in complete compensation of the effects on protein translation observed in resistant compared with parental cells. [1,2,3]

Literature-reported observations and conditions; not Adooq-tested protocols or general treatment recommendations.

Dose-dependent decrease in cell adhesion

Cell-based study · MV4-11 parental cells [1]

MV4-11 parental cells received the study compound before the assay, with untreated cells as the control. Treatment decreased cell adhesion in a dose-dependent manner.

Measured endpoints — not treatment concentrations
EndpointReported resultReference
cell adhesionReported result decreased cell adhesion in a dose-dependent manner[1]

Literature-Reported Treatment Conditions

Exposure duration
24 h prior to the assay
Reported limits
Not stated in the sentences used: dose, route, vehicle.
Methods and source locations

Compound reported in the paper: PF 431396

Literature evidence for the named compound in the stated model; no Adooq product-use or lot-performance claim.

Results > PTK2B/FAK inhibitor PF-431396 abolishes enhanced cell migration in midostaurin-resistant cells (S102); Fig. 3 legend (S200, S201)

cell adhesion: cell adhesion; comparator: Untreated cells — Results > PTK2B/FAK inhibitor PF-431396 abolishes enhanced cell migration in midostaurin-resistant cells (S102)

Invadopodia Activity in Melanoma Cells Following Treatment

Cell-based study · A375 melanoma cells lines [2]

In melanoma cell lines, treatment with the tested compound did not modify invadopodia activity compared with control conditions, as assessed by mean area of degradation.

Measured endpoints — not treatment concentrations
EndpointReported resultReference
mean area of degradationReported result dual FAK/Pyk2 inhibition did not modify invadopodia activity[2]

Literature-Reported Treatment Conditions

Treatment concentration
1 µM
Exposure duration
24 h
Reported limits
Not stated in the sentences used: route, vehicle.
Methods and source locations

Compound reported in the paper: PF 431396

Literature evidence for the named compound in the stated model; no Adooq product-use or lot-performance claim.

Materials and methods > Matrix degradation assay and immunofluorescence (S15, S17); Results > The dual FAK/Pyk2 inhibitor PF-431396 reduced both migration and matrix degradation of melanoma cells (S173, S174); Fig. 8 legend (S245, S248)

mean area of degradation: mean area of degradation; comparator: control conditions — Results > The dual FAK/Pyk2 inhibitor PF-431396 reduced both migration and matrix degradation of melanoma cells (S174); Fig. 8 legend (S248)

Treatment Reduced the Proportion of Macrophages With High Bacterial Burden

Cell-based study · RAW 264.7 macrophages [3]

In RAW 264.7 macrophages, the compound was added at 10 µM post-phagocytosis. Compared with untreated cells, treatment significantly decreased the proportion of cells with a high bacterial burden, reported as 9.01 % at 6 h p.i. and 6.87 % at 12 h p.i.

Measured endpoints — not treatment concentrations
EndpointReported resultReference
percentage of the total populationhigh bacterial burden 9.01 % at 6 h p.i. and 6.87 % at 12 h p.i.[3]

Literature-Reported Treatment Conditions

Treatment concentration
10 µM
Exposure duration
post-phagocytosis; 6 h p.i.; 12 h p.i.
Method
added
Co-treatment
Other interventions in this design: LF82::rpsMGFP m.o.i. of 100; lipopolysaccharide 1 µg ml−1; gentamicin 50 µg ml−1. Compound effect isolated by the comparison: Untreated cells.
Reported limits
Not stated in the sentences used: vehicle.
Methods and source locations

Compound reported in the paper: PF 431396

Evidence for PF 431396 as the hydrate form reported in the paper, not the free base/neutral form supplied as A11142; no salt equivalence, dose conversion or lot validation.

Methods > Gentamicin protection assay for AIEC infection (S9, S10, S11); Results > PF-431396 hydrate blocks intracellular LF82 replication without affecting overall numbers of infected cells (S97, S100, S101, S103, S104); Fig. 4. legend (S149, S151)

percentage of the total population: percentage of the total population; comparator: Untreated cells — Results > PF-431396 hydrate blocks intracellular LF82 replication without affecting overall numbers of infected cells (S97, S103)

Compensation of protein translation changes in resistant cells

Cell-based study · MV4-11R cells [1]

MV4-11R cells were exposed to PF 431396 at 300 nM for 16 h and compared with mock-treated MV4-11R cells. Nascent proteomics showed that treatment resulted, in the majority of cases, in complete compensation of the effects on protein translation observed in resistant compared with parental cells.

Measured endpoints — not treatment concentrations
EndpointReported resultReference
Nascent proteomicsReported result In the majority of cases PF-431396 treatment resulted in complete compensation of the effects on protein translation observed in resistant compared to parental cells[1]

Literature-Reported Treatment Conditions

Treatment concentration
300 nM
Exposure duration
16 h
Method
exposed
Co-treatment
Other interventions in this design: PKC-412/midostaurin. Compound effect isolated by the comparison: MV4-11R treated with 300 nM PF-431396 compared to MV4-11R cells with mock treatment (R).
Reported limits
Not stated in the sentences used: vehicle.
Methods and source locations

Compound reported in the paper: PF 431396

Literature evidence for the named compound in the stated model; no Adooq product-use or lot-performance claim.

Materials and Methods > Cell culture, primary AML samples, and treatments (S3); Results > Resistance-associated alterations in protein homeostasis are reverted by PTK2B inhibition (S93, S97); Fig. 2 legend (S190, S192)

Nascent proteomics: Nascent proteomics; comparator: MV4-11R cells with mock treatment (R) — Results > Resistance-associated alterations in protein homeostasis are reverted by PTK2B inhibition (S97); Fig. 2 legend (S190)

Specifications

Manufacturer Adooq Bioscience
Actions Inhibitor
CAS Number 717906-29-1
Applications FAK/PYK2 inhibitor
Formula C22H21F3N6O3S
Molecular Weight 506.5
SMILES
CN(C1=CC=CC=C1CNC2=NC(=NC=C2C(F)(F)F)NC3=CC4=C(C=C3)NC(=O)C4)S(=O)(=O)C

Storage & Solubility

In Vitro Solubility

Reported Solubility

SolventReported Solubility
DMSO 94 mg/mL (185.58 mM)
Water Insoluble
Ethanol Insoluble

Preparing Stock Solutions

Stock preparation is unavailable for this product molecular weight.

Calculated stock concentrations do not establish solvent solubility. Refer to the reported solubility data for experimental guidance.

Storage

Store powder at -20°C, keep desiccated.
In powder form, the chemical is stable for 36 months.
In solution, store at -20°C and use within 1 month to prevent loss of potency. Aliquot to avoid multiple freeze/thaw cycles.

Research References

  1. [1] Allert C, Waclawiczek A, Zimmermann SMN, et al. Protein tyrosine kinase 2b inhibition reverts niche-associated resistance to tyrosine kinase inhibitors in AML. Leukemia (2022). PMID: 36056084 DOI: 10.1038/s41375-022-01687-x Source material
  2. [2] Legrand M, Mousson A, Carl P, et al. Protein dynamics at invadopodia control invasion-migration transitions in melanoma cells. Cell Death Dis (2023). PMID: 36899008 DOI: 10.1038/s41419-023-05704-4 Source material
  3. [3] Li X, Ormsby MJ, Fallata G, et al. PF-431396 hydrate inhibition of kinase phosphorylation during adherent-invasive Escherichia coli infection inhibits intra-macrophage replication and inflammatory cytokine release. Microbiology (Reading) (2023). PMID: 37311220 DOI: 10.1099/mic.0.001337 Source material

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