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  • PF06650833
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PF06650833

PF06650833 (PF-06650833) 是一种有效的、选择性的和口服活性的白细胞介素 1 受体相关激酶 4 (IRAK4) 抑制剂,在细胞和 PBMC 试验中的 IC50 分别为 0.2 和 2.4 nM。

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PF06650833的二维码

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  • 货号: ajci22816
  • CAS: 1817626-54-2
  • 别名: PF-06650833
  • 分子式: C18H20FN3O4
  • 分子量: 361.37
  • 纯度: >98%
  • 溶解度: DMSO : ≥ 33 mg/mL (91.32 mM)
  • 储存: Store at -20°C
  • 库存: 现货

Background

PF06650833 is a potent, selective and orally active inhibitor of interleukin-1 receptor associated kinase 4 (IRAK4) with IC50s of 0.2 and 2.4 nM in the cell and PBMC assay, respectively. PF06650833 is used to treat diseases such as rheumatoid arthritis, lupus, and lymphomas[1][2].


The kinome selectivity profile of PF06650833 (Compound 40) is assessed in a panel of 278 kinases (Invitrogen) at 200 nM inhibitor concentration using the ATP Km for each kinase. Approximately 100% inhibition is observed for IRAK4[1]. Lactam PF06650833 (Compound 40) is assessed in a whole cell functional VEGF2R assay (PAE-KDR cell line). No activity is observed at concentrations up to and including 30 μM. In a voltage clamp assay, PF06650833 inhibits hERG current by 25% at 100 μM[1]. The ability of PF06650833 (Compound 40) to inhibit five major CYP450 enzymes is assessed using pooled human liver microsomes and probe substrates for the CYP450 enzymes. At a concentration of 3 μM of PF06650833, less than 5% inhibition of CYPs 1A2, 2C8, 2C9, 2D6, and 3A4 is observed. Lactam PF06650833 is examined for time dependent inhibition effects on six major CYP450 enzymes (CYP1A2, 2B6, 2C8, 2C9, 2C19, and 2D6) using pooled human liver microsomes and probe substrates. At 100 μM of PF06650833, no time dependent CYP inhibition is observed. The potential induction of CYP3A by PF06650833 is assessed using cryopreserved human hepatocytes and afforded a 4.4-fold increase in mRNA at 10 μM[1].


PF06650833 (Compound 40; 0.3-30 mg/kg; oral administration; for 2.5 hours; male Sprague-Dawley rats) treatment significantly inhibits LPS-induced TNF-α in a dose dependent manner. Mean exposures of PF06650833 in plasma are 2.1 nM, 7.7 nM, 19 nM and 150 nM free, respectively, at 2.5 hours after oral administration of PF06650833 at 0.3, 1, 3, and 30 mg/kg. The fraction unbound in rat plasma of PF06650833 is 0.3[1].


参考文献:
[1]. Lee KL, et al. Discovery of Clinical Candidate 1-{[(2S,3S,4S)-3-Ethyl-4-fluoro-5-oxopyrrolidin-2-yl]methoxy}-7-methoxyisoquinoline-6-carboxamide (PF-06650833), a Potent, Selective Inhibitor of Interleukin-1 Receptor Associated Kinase 4 (IRAK4), by Fragment-Based Drug Design. J Med Chem. 2017 Jul 13;60(13):5521-5542.
[2]. Seganish WM. Inhibitors of interleukin-1 receptor-associated kinase 4 (IRAK4): a patent review (2012-2015). Expert Opin Ther Pat. 2016 Aug;26(8):917-32.

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