Name: PF-3758309
Price: 196.00 USD

- Overview
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    Background
    
    PF-3758309 is an inhbitor of PAK4 with IC50 of 1.3 nM [1].
    P21-activated kinases (PAKs) are the family of serine/theronine kinases, which play important role in linking Rho GTPase to cytoskeleton reorganization and nuclear signaling. PAK4 is a member of PAKs family, specifically responsive for interacting with GTP bound form of Cdc42 and JNK family. PAK4 is involved in filopodia formation and may play a role in the reorganization of the actin cytoskeleton.
    Biochemical study had identified that PF-3758309 was an ATP-competitive inhibitor of PAK4, which inhibited the kinase activity [1]. When PAK4 was screened with a panel of tumor cell lines, it was found PF-3758309 inhibited the phosphorylation of PAK4 substrate GEF-H1, and also the PAK4-induced anchorage-independent cell growth, with IC50 value of 1.3 nM and 4.7 ±3 nM respectively [1]. When PF-3758309 was screened with a panel of PAKs related kinases, it exhibited good potency and specificity for PAK4 [1]. Cell analysis conﬁrmed that PF-3758309 modulates PAK4-dependent signaling nodes and identiﬁes unexpected links to additional p53pathways [1].
    In vivo activity of PF-3758309 was examined in a panel of human xenograft model, including HCT116 and A549 model. Twice daily oral administration of PF-3758309 (7.5-30 mg/kg BID) for 9-18 days resulted in significant inhibition of tumor growth in all the models. The tumor growth was shown to be caused by PAK-dependent pathways in HCT116 and A549 model. Additionally, PF-3758309 was shown to regulate PAK-associated cell proliferation and survival in certain models. Therefore, PF-3758309 exhibited inhibitory activity on PAK4 [1].
- Properties
  - Alternative Name
    
    PF 3758309; PF3758309; N-[(1S)-2-(dimethylamino)-1-phenylethyl]-6,6-dimethyl-3-[(2-methylthieno[3,2-d]pyrimidin-4-yl)amino]-1,4-dihydropyrrolo[3,4-c]pyrazole-5-carboxamide
    
    CAS Number
    
    898044-15-0
    
    Molecular Formula
    
    C25H30N8OS
    
    Molecular Weight
    
    490.62
    
    Appearance
    
    A solid
    
    Purity
    
    98.00%
    
    Solubility
    
    ≥24.53 mg/mL in DMSO; insoluble in H2O; ≥101.4 mg/mL in EtOH with gentle warming and ultrasonic
    
    Storage
    
    Store at -20°C
    
    * For Research Use Only
- Reference
  - 1. White SM, Avantaggiati ML, et al. "YAP/TAZ Inhibition Induces Metabolic and Signaling Rewiring Resulting in Targetable Vulnerabilities in NF2-Deficient Tumor Cells." Dev Cell. 2019 May 6;49(3):425-443.e9. PMID:31063758
    2. Ramos-Alvarez I, Jensen RT. "P21-activated kinase 4 in pancreatic acinar cells is activated by numerous gastrointestinal hormones/neurotransmitters and growth factors by novel signaling, and its activation stimulates secretory/growth cascades." Am J Physiol Gastrointest Liver Physiol. 2018 Aug 1;315(2):G302-G317. PMID:29672153

PF-3758309

PF-3758309

Background

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