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U-73122

U-73122, CAS 112648-68-7, inhibits agonist-induced phospholipase C activation (IC50 = 1-2.1 µM) in human platelets and neutrophils.

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Synonym(s):
U-73122, 1-[6-((17β-3-Methoxyestra-1,3,5(10)-trien-17-yl)amino)hexyl]-1H-pyrrole-2,5-dione
Empirical Formula (Hill Notation):
C29H40N2O3
CAS Number:
Molecular Weight:
464.64
NACRES:
NA.77

Quality Level

assay

≥98% (HPLC)

form

solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze

color

off-white

solubility

anhydrous DMSO: 1 mg/mL
chloroform: 3 mg/mL
anhydrous ethanol: 500 μg/mL

shipped in

ambient

storage temp.

10-30°C

InChI

1S/C29H40N2O3/c1-29-16-15-23-22-10-8-21(34-2)19-20(22)7-9-24(23)25(29)11-12-26(29)30-17-5-3-4-6-18-31-27(32)13-14-28(31)33/h8,10,13-14,19,23-26,30H,3-7,9,11-12,15-18H2,1-2H3/t23-,24-,25+,26+,29+/m1/s1

InChI key

LUFAORPFSVMJIW-ZRJUGLEFSA-N

General description

A potent, selective, and cell-permeable inhibitor C-type phosphatidylinositol-specific phospholipases. Inhibits agonist-induced phospholipase C activation (IC50 = 1-2.1 µM) in human platelets and neutrophils. Inhibits ET-1 and parathyroid hormone induced Ca2+ transients (IC50 = 800 nM and 500 nM, respectively). Also inhibits agonist-induced down-regulation of muscarinic receptors in SK-N-SH neuroblastoma cells. Acts as a potent inhibitor of human polymorphonuclear neutrophil adhesion on biological surfaces (IC50 = 50 nM). Abolishes T lymphoma cell invasion into fibroblast monolayers.
A potent, selective, and cell-permeable inhibitor C-type phosphatidylinositol-specific phospholipases. Inhibits agonist-induced phospholipase C activation (IC50 = 1-2.1 µM) in human platelets and neutrophils. Inhibits ET-1 and parathyroid hormone-induced Ca2+ transients (IC50 = 800 nM and 500 nM, respectively). Also inhibits agonist-induced down-regulation of muscarinic receptors in SK-N-SH neuroblastoma cells. Acts as a potent inhibitor of human polymorphonuclear neutrophil adhesion on biological surfaces (IC50 = 50 nM). Reported to abolish T lymphoma cell invasion into fibroblast monolayers.

Biochem/physiol Actions

Cell permeable: yes
Primary Target
Agonist-induced phospholipase C activation
Product does not compete with ATP.
Reversible: no
Target IC50: 1-2.1 µM against agonist-induced phospholipase C activation in human platelets and neutrophils; 800 nM and 500 nM, respectively, against ET-1 and parathyroid hormone-induced Ca2+ transients; 50 nM against human polymorphonuclear neutrophil adhesion

Warning

Toxicity: Irritant (B)

Preparation Note

The use of anhydrous solvents is critical for the solubility of the compound; the presence of moisture in the solvent will lower the solubility of the compound.

Reconstitution

Unstable in DMSO and ethanol; reconstitute in anhydrous DMSO or ethanol just prior to use. Following reconstitution in anhydrous chloroform, aliquot into single use volumes, evaporate to dryness under a stream of nitrogen, and freeze (-20°C. Dried aliquots are stable for up to 6 months at -20°C. ); Reconstitute dried aliquots in anhydrous DMSO or anhydrous ethanol just prior to use.

Other Notes

Stam, J.C., et al. 1998. EMBO J. 17, 4066.
Smith, R.J., et al. 1996. J. Pharmacol. Exp. Ther.278, 320.
Tatrai, A., et al. 1994. Biochim. Biophys. Acta 1224, 595.
Wang, X.D., et al. 1994. Biochim. Biophys. Acta1223, 101.
Bleasdale, J.E., and Fisher, S.K. 1993. Neuroprotocols: A Companion to Methods in Neurosci. 3, 125.
Wu, H., et al. 1992. Biochemistry31, 3370.
Yule, D.I., and Williams, J.A. 1992. J. Biol. Chem.267, 13830.
Thompson, A.K., et al. 1991. J. Biol. Chem.266, 23856.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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