Cyclooxygenase-1-Selective Inhibitors Based on the (<i>E</i>)-2′-<i>Des</i>-methyl-sulindac Sulfide Scaffold
作者:Andy J. Liedtke、Brenda C. Crews、Cristina M. Daniel、Anna L. Blobaum、Philip J. Kingsley、Kebreab Ghebreselasie、Lawrence J. Marnett
DOI:10.1021/jm201528b
日期:2012.3.8
Prostaglandins (PGs) are powerful lipid mediators in many physiological and pathophysiological responses. They are produced by oxidation of arachidonic acid (AA) by cyclo- oxygenases (COX-1 and COX-2) followed by metabolism of endoperoidde intermediates by terminal PG synthases. PG biosynthesis is inhibited by nonsteroidal anti-inflammatory drugs (NSAIDs). Specific inhibition of COX-2 has been extensively investigated, but relatively few COX-1-selective inhibitors have been described. Recent reports of a possible contribution of COX-1 in analgesia, neuroinflammation, or carcinogenesis suggest that COX-1 is a potential therapeutic target. We designed, synthesized, and evaluated a series of (E)-2'-des-methyl-sulindac sulfide (E-DMSS) analogues for inhibition of COX-1. Several potent and selective inhibitors were discovered, and the most promising compounds were active against COX-1 in intact ovarian carcinoma cells (OVCAR-3). The compounds inhibited tumor cell proliferation but only at concentrations >100-fold higher than the concentrations that inhibit COX-1 activity. E-DMSS analogues may be useful probes of COX-1 biology in vivo and promising leads for COX-1-targeted therapeutic agents.