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Nitrooxyacyl Derivatives of Salicylic Acid: Aspirin‐Like Molecules that Covalently Inactivate Cyclooxygenase‐1
Author(s) -
Cena Clara,
Tosco Paolo,
Marini Elisabetta,
Lazzarato Loretta,
Piccinini Marco,
Ramondetti Cristina,
Lupino Elisa,
Fruttero Roberta,
Gasco Alberto
Publication year - 2011
Publication title -
chemmedchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.817
H-Index - 100
eISSN - 1860-7187
pISSN - 1860-7179
DOI - 10.1002/cmdc.201000397
Subject(s) - salicylic acid , aspirin , cyclooxygenase , chemistry , antithrombotic , in vivo , pharmacology , platelet , biochemistry , in vitro , gene isoform , enzyme , medicine , biology , immunology , microbiology and biotechnology , gene , cardiology
A recently described series of nitrooxyacyl derivatives of salicylic acid, displaying aspirin‐like anti‐inflammatory and platelet anti‐aggregatory properties, were evaluated for their abilities to inhibit cyclooxygenase (COX). A number of these compounds irreversibly inhibited both COX‐1 and COX‐2 isoforms when tested in isolated human platelets and monocytes. Further studies using COX‐1 expressed in human HEK293T cells showed that this inhibition mechanism is similar to that of aspirin; namely, the products are able to covalently bind to the Ser 530 residue present in the active cleft of the enzyme. Molecular modeling enabled us to rationalize this behavior. Because these products were previously found to display NO‐dependent properties in rat animal models, particularly as they decreased in vivo gastrotoxicity and induced in vitro vasodilation, they represent a new and interesting class of potential aspirin‐like antithrombotic agents worthy of further study.