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Differential inhibition of group IVA and group VIA phospholipases A2 by 2-oxoamides.

ABSTRACT: Inhibitors of the Group IVA phospholipase A(2) (GIVA cPLA(2)) and GVIA iPLA(2) are useful tools for defining the roles of these enzymes in cellular signaling and inflammation. We have developed inhibitors of GVIA iPLA(2) building upon the 2-oxoamide backbone that are uncharged, containing ester groups. Although the most potent inhibitors of GVIA iPLA(2) also inhibited GIVA cPLA(2), there were three 2-oxoamide compounds that selectively and weakly inhibited GVIA iPLA(2). We further show that several potent 2-oxoamide inhibitors of GIVA cPLA(2) containing free carboxylic groups (Kokotos et al. J. Med. Chem. 2002, 45, 2891-2893) do not inhibit GVIA iPLA(2) and are, therefore, selective GIVA cPLA(2) inhibitors.

SUBMITTER: Stephens D

PROVIDER: S-EPMC2544624 | biostudies-literature | 2006 May

REPOSITORIES: biostudies-literature

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Differential inhibition of group IVA and group VIA phospholipases A2 by 2-oxoamides.

Stephens Daren D Barbayianni Efrosini E Constantinou-Kokotou Violetta V Peristeraki Anna A Six David A DA Cooper Jennifer J Harkewicz Richard R Deems Raymond A RA Dennis Edward A EA Kokotos George G

Journal of medicinal chemistry 20060501 9

Inhibitors of the Group IVA phospholipase A(2) (GIVA cPLA(2)) and GVIA iPLA(2) are useful tools for defining the roles of these enzymes in cellular signaling and inflammation. We have developed inhibitors of GVIA iPLA(2) building upon the 2-oxoamide backbone that are uncharged, containing ester groups. Although the most potent inhibitors of GVIA iPLA(2) also inhibited GIVA cPLA(2), there were three 2-oxoamide compounds that selectively and weakly inhibited GVIA iPLA(2). We further show that seve ...[more]

PMID: 16640343

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