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Rathore, R. S. and Sumakanth, M. and Reddy, M. S. (2013) Discovery and biological evaluation of novel 1,4-benzoquinone and related resorcinol derivatives that inhibit 5-lipoxygenase. Current Pharmaceutical Design, 19 (26). pp. 4674-4686.

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5-Lipoxygenase (5-LO), an enzyme that catalyzes the initial steps in the biosynthesis of pro-inflammatory leukotrienes, is an attractive drug target for the pharmacotherapy of inflammatory and allergic diseases. Here, we present the discovery and biological evaluation of novel series of 1,4-benzoquinones and respective resorcinol derivatives that efficiently inhibit human 5-LO, with little effects on other human lipoxygenases. SAR analysis revealed that the potency of the compounds strongly depends on structural features of the lipophilic residues, where bulky naphthyl or dibenzofuran moieties favor 5-LO inhibition. Among the 1,4-benzoquinones, compound Ig 5-[(2-naphthyl)methyl]-2-hydroxy-2,5-cyclohexadiene-1,4-dione potently blocked 5-LO activity in cell-free assays with IC50 = 0.78 mu M, and suppressed 5-LO product synthesis in polymorphonuclear leukocytes with IC50 = 2.3 mu M. Molecular docking studies suggest a concrete binding site for Ig in 5-LO where select pi-pi interactions along with hydrogen bond interactions accomplish binding to the active site of the enzyme. Together, our study reveals novel valuable 5-LO inhibitors with potential for further preclinical assessment as anti-inflammatory compounds. (C) 2013 Elsevier Masson SAS. All rights reserved.

Item Type: Article
Subjects: Animal Genetics and Genomics
Depositing User: Unnamed user with email alok@urdip.res.in
Date Deposited: 18 Mar 2015 08:06
Last Modified: 18 Mar 2015 08:06
URI: http://niab.sciencecentral.in/id/eprint/10

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