Target Validation Information
Target ID T10965
Target Name P-selectin
Target Type
Clinical Trial
Drug Potency against Target RPSGL-Ig Drug Info IC50 = 10 uM [552754]
2,3,4-trihydroxybenzoic acid Drug Info IC50 = 11800 nM [528676]
GALLICACID Drug Info IC50 = 19100 nM [528676]
Action against Disease Model RPSGL-Ig In mixed neutrophil/platelet suspensions, the percentage of neutrophils that bind platelets increased significantly , from 10.8 +/- 1.6% at baseline to 39.7 +/- 2.9% (P < 0.05) after perfusion over damaged arteries compared with 69.7 +/- 2.5% with thrombin. This binding was completely inhibited by a recombinant soluble PSGL-1 (rPSGL-Ig) and anti-P-selectin and PSGL-1-blocking monoclonal antibodies. The inhibitory effect of rPSGL-Ig correlated well with its binding to platelets (r = 0.98, P < 0.001). Circulating platelets are activated upon contact with damaged arteries, thereby enhancing their adhesive interactions with neutrophils via P-selectin and PSGL-1. Inhibition of this binding with rPSGL-Ig may constitute a target in the treatment of inflammatory and thrombotic reactions. [552287] Drug Info
The Effect of Target Knockout, Knockdown or Genetic Variations P-selectin is critical in the progression of atherosclerosis as evidenced by knockout animal models where P-selectin knockout mice crossed with apoE deficient mice exhibit significantly reduced atherosclerosis and leukocyte recruitment in the plaque. A soluble form of P-selectin also exists, which may have pro-atherogenic and pro-thrombotic effects. Thus targeting of P-selectin remains a strong clinical candidate for developing novel therapeutic strategies in inflammatory diseases. This review will discuss the role of P-selectin and describe the function of P-selectin antagonists as clinical targets. [552754]
References
Ref 552754Characterization of the novel P-selectin inhibitor PSI-697 [2-(4-chlorobenzyl)-3-hydroxy-7,8,9,10-tetrahydrobenzo[h] quinoline-4-carboxylic acid] in vitro and in rodent models of vascular inflammation and thrombosis. J Pharmacol Exp Ther. 2008 Feb;324(2):497-506. Epub 2007 Nov 16.
Ref 528676J Med Chem. 2007 Mar 22;50(6):1101-15. Epub 2007 Feb 16.Rational design of novel, potent small molecule pan-selectin antagonists.
Ref 528676J Med Chem. 2007 Mar 22;50(6):1101-15. Epub 2007 Feb 16.Rational design of novel, potent small molecule pan-selectin antagonists.
Ref 552287Prevention of experimental choroidal neovascularization with intravitreal anti-vascular endothelial growth factor antibody fragment. Arch Ophthalmol. 2002 Mar;120(3):338-46.

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