Article (Scientific journals)
Evaluation of original dual thromboxane A2 modulators as antiangiogenic agents
de Leval, Xavier; Dassesse, Thibaut; Dogné, Jean-Michel et al.
2006In Journal of Pharmacology and Experimental Therapeutics, 318 (3), p. 1057-1067
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Keywords :
Thromboxane; endothelial cell
Abstract :
[en] Angiogenesis is a promising target for the therapy of several diseases including cancer. This study was undertaken to characterize the antiangiogenic properties of a series of original dual thromboxane A(2) (TXA(2)) inhibitors derived from torasemide, a marketed loop diuretic with TXA(2) antagonistic properties, by evaluating their effects on human endothelial cell migration, adhesion, and viability in vitro, as well as in the ex vivo rat aortic ring assay. All drugs tested exhibited a marked affinity toward human platelet TXA(2) receptor, significantly prevented platelet aggregation induced by U-46,619, a stable TXA(2) receptor agonist, and inhibited platelet TXA(2) synthase without affecting cyclooxygenase (COX)-1 or COX-2 enzymatic activities. These dual TXA(2) inhibitors dose dependently inhibited endothelial cell migration in chemotaxis assays using vascular endothelial growth factor ( VEGF) as a chemoattractant but failed to affect cell adhesion and viability. The highest rates of cell migration inhibition were obtained with original compounds BM-567 and BM-573 (50.3 and 59.4% inhibition, respectively) when used at the final concentration of 10 mu M. In addition, pretreatment of endothelial cells with these two drugs significantly prevented U-46,619-induced intracellular Ca2+ pool mobilization, thus suggesting a mechanistic link between inhibition of the TXA(2) pathway and reduced endothelial cell migration. Treatment of rat aortic explants with U-46,619 (9,11- dideoxy- 9,11- methanoepoxyprostaglandin F 2) significantly enhanced vessel sprouting whereas aortic rings treated with some of the compounds, including BM-567 (N-n-pentyl-N'-[2-(cyclohexylamino)-5-nitrobenzenesulfonyl] urea) and BM-573 (N-tert-butyl-N'-[5-nitro-2p- toluylaminobenzenesulfonyl]urea), showed a significant decrease in vessel sprouting, which was not reversed by the addition of VEGF. These data suggest that our original dual TXA(2) inhibitors bear antiangiogenic properties, mainly by inhibiting endothelial cell migration.
Disciplines :
Oncology
Pharmacy, pharmacology & toxicology
Author, co-author :
de Leval, Xavier
Dassesse, Thibaut
Dogné, Jean-Michel ;  Université de Liège - ULiège > Département de pharmacie > Département de pharmacie
Waltregny, David  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Labo de recherche sur les métastases
Bellahcene, Akeila ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Labo de recherche sur les métastases
Benoit, Valérie
Pirotte, Bernard ;  Université de Liège - ULiège > Chimie pharmaceutique
Castronovo, Vincenzo ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie générale et cellulaire
Language :
English
Title :
Evaluation of original dual thromboxane A2 modulators as antiangiogenic agents
Publication date :
September 2006
Journal title :
Journal of Pharmacology and Experimental Therapeutics
ISSN :
0022-3565
eISSN :
1521-0103
Publisher :
Amer Soc Pharmacology Experimental Therapeutics, Bethesda, United States - Maryland
Volume :
318
Issue :
3
Pages :
1057-1067
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 25 January 2009

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