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PF-543

CAS No. : 1415562-82-1

MCE 站：PF-543

产品活性：PF-543 (Sphingosine Kinase 1 Inhibitor II) 是一种有效，选择性，可逆和鞘氨醇竞争性 SPHK1 抑制剂，IC₅₀ 为 2 nM，K_i 为 3.6 nM。PF-543 对 SPHK1 的选择性是 SPHK2 的 100 倍以上。PF-543 还是有效的全血中 1-磷酸鞘氨醇 (S1P) 形成的有效抑制剂，IC₅₀ 为 26.7 nM。PF-543 诱导细胞凋亡，坏死和自噬。

研究领域：Immunology/Inflammation  |  GPCR/G Protein  |  Apoptosis  |  Autophagy

作用靶点：SphK  |  LPL Receptor  |  Apoptosis  |  Autophagy

In Vitro: PF-543 (10-1000 nM; 24?hours; PASM cells) treatment abolishes SK1 expression at nM concentrations.
PF-543 (0.1-10 μM; 24 hours; PASM cells) treatment induces caspase-3/7 activity.
PF-543 inhibits C₁₇-S1P formation in 1483 cells with an IC₅₀ of 1.0 nM.
SphK1 inhibition by PF-543 causes a dose-dependent depletion of the intracellular level of S1P with EC₅₀ concentration of 8.4 nM and a concomitant elevation of the intracellular level of sphingosine in 1483 cells. The level of endogenous S1P in 1483 cells after a 1 h treatment with 200 nM PF-543 is decreased 10-fold, producing a proportional increase in the level of sphingosine.

In Vivo: PF-543 (1 mg/kg; intraperitoneal injection; every second day; for 21 days; female C57BL/6 J mice) treatment has no effect on vascular remodelling but reduces right ventricular hypertrophy. The protection involves a reduction in the expression of p53 and an increase in the expression of anti-oxidant nuclear factor Nrf-2.
Mice are initially dosed (ip) with 10 mg/kg or 30 mg/kg of PF-543 for 24 h and the T_1/2 is 1.2 h in blood samples. Administration of 10 mg/kg PF-543 for 24 h to mice induces a decrease in SK1 expression in pulmonary vessels.

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