PF-543

Catalog No.S7177

PF-543, a novel sphingosine-competitive inhibitor of SphK1, inhibits SphK1 with IC50 and Ki of 2.0 nM and 3.6 nM, exhibits >100-fold selectivity over the SphK2 isoform.

Price Stock Quantity  
USD 120 In stock
Bulk Inquiry

Massive Discount Available

Free Overnight Delivery on all orders over $ 500.

PF-543 Chemical Structure

PF-543 Chemical Structure
Molecular Weight: 465.6

Validation & Quality Control

Quality Control & MSDS

Product Information

  • Compare S1P Receptor Modulators
    Compare S1P Receptor Products
  • Research Area

Product Description

Biological Activity

Description PF-543, a novel sphingosine-competitive inhibitor of SphK1, inhibits SphK1 with IC50 and Ki of 2.0 nM and 3.6 nM, exhibits >100-fold selectivity over the SphK2 isoform.
Targets SphK1 [1] SphK1 [1]
IC50 2.0 nM 3.6 nM(Ki)
In vitro PF543 is a cell-permeable hydroxyl methylpyrrolidine compound that inhibits SphK-1/SphK1-catalyzed sphingosine phosphorylation in a reversible and sphingosine-competitive manner, exhibiting no affinity toward S1P receptors and much reduced inhibitory activity against Sphk2 (6.8% inhibition at 10 μM) or 46 other lipid and portein kinases (IC50 >10 μM). In the SphK1-overexpression 1483 head and neck carcinoma cells, PF-543 decreases the level of endogenous S1P 10-fold with a proportional increase in the level of sphingosine. PF-543 binds SphK1 reversibly (k off t1/2=8.5 min) and with high affinity and the binding constant (Kd) is 5 nM. PF543 had no effect on the proliferation and survival of 1483, A549, LN229, Jurkat, U937 and MCF-7 cells, despite a dramatic change in the cellular S1P/sphingosine ratio. PF-543 is effective as a potent inhibitor of S1P formation in whole blood, indicating that the SphK1 isoform of sphingosine kinase is the major source of S1P in human blood. [1]
In vivo
Features The most potent inhibitor of SphK1 described to date.

Protocol(Only for Reference)

Kinase Assay:

[1]

FITC-S1P quantification/Caliper assay A 384-well format of the SphK enzyme assay based on separation of FITC-S1P from unreacted FITC-sphingosine substrate using a microfluidic capillary electrophoresis mobility-shift system is developed. Briefly, 3 nM SphK1–His6 is incubated with 1 μM FITC-sphingosine, 20 μM ATP and 10 μM compound (a final concentration of DMSO of 2 %) in a buffer containing 100 mM Hepes (pH 7.4), 1 mM MgCl2,0.01% Triton X-100, 10% glycerol, 100 μM sodium orthovanadate and 1 mM DTT for 1 h in a 384-well Matrical MP-101-1-PP plate. Reaction mixtures (10 μL) are quenched by the addition of 20 μL of 30 mM EDTA and 0.15% Coating Reagent-3 in 100 mM Hepes, and a small aliquot of each reaction (a few nanolitres) is analysed in the Caliper LabChip 3000 instrument under -1.5 psi (psi=6.9 kPa) pressure, a downstream voltage of -1900 V and a sip time of 0.2 s. Phosphorylated fluorescent product and unphosphorylated fluorescent substrate appeared as distinctive peaks and are quantified using the Caliper data.

Cell Assay:

[1]

Cell lines 1483, A549, LN229, Jurkat, U937, MCF-7
Concentrations ~1 μM
Incubation Time 7 days
Method

CellTiter-Glo Assay

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)

SpeciesMouseRatRabbitGuinea pigHamsterDog
Weight (kg)0.020.151.80.40.0810
Body Surface Area (m2)0.0070.0250.150.050.020.5
Km factor36128520
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Rat dose (mg/kg) = mouse dose (22.4 mg/kg) ×  mouse Km(3)  = 11.2 mg/kg
rat Km(6)
1

References

[1] Schnute ME, et al. Biochem J, 2012, 444(1), 79-88.

Chemical Information

Download PF-543 SDF
Molecular Weight (MW) 465.6
Formula

C27H31NO4S

CAS No. 1415562-82-1
Storage 3 years -20℃powder
6 months-80℃in solvent
Synonyms N/A
Solubility (25°C) * In vitro DMSO 93 mg/mL (199.74 mM)
Ethanol 93 mg/mL (199.74 mM)
Water <1 mg/mL (<1 mM)
In vivo
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
Chemical Name 2-Pyrrolidinemethanol, 1-[[4-[[3-methyl-5-[(phenylsulfonyl)methyl]phenoxy]methyl]phenyl]methyl]-, (2R)-

Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Tel: +1-832-582-8158 Ext:3

If you have any other enquiries, please leave a message.

* Indicates a Required Field

Related S1P Receptor Products

  • BAF312 (Siponimod)

    BAF312 (Siponimod) is a next-generation S1P receptor modulator, selective for S1P1 and S1P5 receptors with EC50 of 0.39 nM and 0.98 nM, exhibits >1000-fold selectivity over S1P2, S1P3 and S1P4 receptors. Phase 3.

  • SB225002

    SB225002 is a potent, and selective CXCR2 antagonist with IC50 of 22 nM for inhibiting interleukin IL-8 binding to CXCR2, > 150-fold selectivity over the other 7-TMRs tested.

  • Smoothened Agonist (SAG) HCl

    Smoothened Agonist (SAG) HCl is a cell-permeable Smoothened (Smo) agonist with EC50 of 3 nM in Shh-LIGHT2 cells.

  • Fingolimod (FTY720) HCl

    Fingolimod (FTY720) HCl is a S1P antagonist with IC50 of 0.033 nM in K562, and NK cells.

  • SKI II

    SKI II is a highly selective and non ATP-competitive sphingosine kinase (SphK) inhibitor with IC50 of 0.5 μM, while exhibiting no inhibitory action on other kinases including PI3K, PKCα and ERK2.

  • Vismodegib (GDC-0449)

    Vismodegib (GDC-0449) is a potent, novel and specific hedgehog inhibitor with IC50 of 3 nM and also inhibits P-gp with IC50 of 3.0 μM in a cell-free assay.

  • Forskolin

    Forskolin is a ubiquitous activator of eukaryotic adenylyl cyclase (AC) in a wide variety of cell types, commonly used to raise levels of cAMP in the study and research of cell physiology.

  • Cyclopamine

    Cyclopamine is a specific Hedgehog (Hh) signaling pathway antagonist of Smoothened (Smo) with IC50 of 46 nM in TM3Hh12 cells.

  • Plerixafor 8HCl (AMD3100 8HCl)

    Plerixafor 8HCl (AMD3100 8HCl) is the hydrochloride of Plerixafor, a chemokine receptor antagonist for CXCR4 and CXCL12-mediated chemotaxis with IC50 of 44 nM and 5.7 nM in cell-free assays, respectively.

  • GANT61

    GANT61 is an inhibitor for GLI1 as well as GLI2-induced transcription, inhibits hedgehog with IC50 of 5 μM in GLI1 expressing HEK293T cell, displays selectivity over other pathways, such as TNF and glucocorticoid receptor gene transactivation.

Recently Viewed Items

Tags: buy PF-543 | PF-543 supplier | purchase PF-543 | PF-543 cost | PF-543 manufacturer | order PF-543 | PF-543 distributor
×
Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
Contact Us