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Description: Inhibitor of E-NTPDases
Alternative Names: Sodium polyoxotungstate
Chemical Name: Sodium metatungstate
Biological Activity for POM 1
POM 1 is an inhibitor of Ecto-NTPDases that displays minor selectivity for NTPDases 1 and 2 over NTPDase 3 and P2Y12 (Ki values are 2.58, 3.26, > 10 and 28.8 μM for NTPDase 1, NTPDase 3, P2Y12 and NTPDase 2 respectively). Abolishes renal protection induced by ischemic preconditioning. Inhibits synaptic transmission at hippocampal CA1 pyramidal synapses and at the cerebellar parallel fiber-Purkinje cell (PF) synapse.
Technical Data for POM 1
| M. Wt | 2986.01 |
| Formula | H2O40Na6W12 |
| Storage | Store at RT |
| CAS Number | 12141-67-2 |
| PubChem ID | 71311259 |
| InChI Key | YVQUUPJGDSQKML-UHFFFAOYSA-N |
| Smiles | O.[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O |
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
Solubility Data for POM 1
| Solvent | Max Conc. mg/mL | Max Conc. mM | |
|---|---|---|---|
| Solubility | |||
| water | 298.6 | 100 |
Preparing Stock Solutions for POM 1
The following data is based on the product molecular weight 2986.01. Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.
| Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
|---|---|---|---|
| 1 mM | 0.33 mL | 1.67 mL | 3.35 mL |
| 5 mM | 0.07 mL | 0.33 mL | 0.67 mL |
| 10 mM | 0.03 mL | 0.17 mL | 0.33 mL |
| 50 mM | 0.01 mL | 0.03 mL | 0.07 mL |
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Product Datasheets for POM 1
References for POM 1
References are publications that support the biological activity of the product.
Muller et al (2006) Polyoxometalates - a new class of potent ecto-nucleoside triphosphate diphosphohydrolase (NTPDase) inhibitors. Bioorg.Med.Chem.Lett. 16 5943 PMID: 16997558
Grenz et al (2007) Contribution of E-NTPDase1 (CD39) to renal protection from ischemia-reperfusion injury. FASEB J. 21 2863 PMID: 17442731
Wall et al (2008) The novel NTPDase inhibitor sodium polyoxotungstate (POM-1) inhibits ATP breakdown but also blocks central synaptic transmission, an action independent of NTPDase inhibition. 55 1251 PMID: 18768144
If you know of a relevant reference for POM 1, please let us know.
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Keywords: POM 1, POM 1 supplier, inhibitors, inhibits, E-NTPDases, ATPases, POM1, Sodium, polyoxotungstate, NTPDase, 2689, Tocris Bioscience
12 Citations for POM 1
Citations are publications that use Tocris products. Selected citations for POM 1 include:
Aho et al (2016) Extracellular ATP protects endothelial cells against DNA damage. Purinergic Signal 12 575 PMID: 27030122
Yegutkin et al (2012) Metabolism of circulating ADP in the bloodstream is mediated via integrated actions of soluble adenylate kinase-1 and NTPDase1/CD39 activities. FASEB J 26 3875 PMID: 22637533
Hirata et al (2018) CD150high Bone Marrow Tregs Maintain Hematopoietic Stem Cell Quiescence and Immune Privilege via Adenosine. Cell Stem Cell 22 445 PMID: 29456159
Sassi et al (2014) Cardiac myocyte-secreted cAMP exerts paracrine action via adenosine receptor activation. J Clin Invest 124 5385 PMID: 25401477
Ohradanova-Repic et al (2018) Extracellular purine metabolism is the switchboard of immunosuppressive macrophages and a novel target to treat diseases with macrophage imbalances. Front Immunol 9 852 PMID: 29780382
Crittenden et al (2018) Purine metabolism controls innate lymphoid cell function and protects against intestinal injury. Immunol Cell Biol 96 1049 PMID: 29758102
Del Papa et al (2016) The NOTCH1/CD39 axis: a Treg trip-switch for GvHD. Leukemia 30 1931 PMID: 27125307
Fang et al (2016) Expression of CD39 on activated T cells impairs their survival in older individuals. Cell Rep. 14 1218 PMID: 26832412
Rao et al (2014) A dual role for autophagy in a murine model of lung cancer. Cancer Biol Ther 5 3056 PMID: 24445999
Alvarez-Sanchez et al (2019) Peripheral CD39-expressing T regulatory cells are increased and associated with relapsing-remitting multiple sclerosis in relapsing patients. Sci Rep 9 2302 PMID: 30783191
Burr and Parekkadan (2019) Kinetics of MSC-based enzyme therapy for immunoregulation. J Transl Med 17 263 PMID: 31409424
Pinheiro et al (2013) Bradykinin-induced Ca2+ signaling in human subcutaneous fibroblasts involves ATP release via hemichannels leading to P2Y12 receptors activation. Cell Commun Signal 11 70 PMID: 24047499
Do you know of a great paper that uses POM 1 from Tocris? Please let us know.
Reviews for POM 1
Average Rating: 5 (Based on 1 Review.)
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POM-1 inhibits PBMCs CD39 activity.
By
Anonymous on 02/21/2019
Assay Type: Ex Vivo
Species: Human
Cell Line/Tissue: PBMCs
Human PBMCs were incubated with 10 μM POM-1 for 30 minutes to inhibit CD39 ATPase activity. POM-1 caused a 80% inhibition of PBMCs ATPase activity.
PBMCs were isolated from healthy subjects and from multiple sclerosis patients and CD39 activity was measured by the Malachite Green Phosphate Assay. Cells were washed in phosphate-free buffer and incubated with ATP (250 μM) for 30 minutes at 37ºC. To selectively assess CD39 ATPase activity, POM-1 (10 μM) was added while cells were incubated with ATP.
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P2X and P2Y Receptors Scientific Review
Written by Kenneth Jacobson, this review provides an overview of the different subtypes and structures of the P2 receptor families, as well as the pharmacological probes used to study them; compounds available from Tocris are listed.