, Volume 35, Issue 5, pp 1706-1714
Date: 12 Jun 2012

Celecoxib Enhances the Anti-inflammatory Effects of Farnesylthiosalicylic Acid on T Cells Independent of Prostaglandin E2 Production

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Celecoxib (Celebrex®), a non-steroidal anti-inflammatory drug and selective cyclooxygenase-2 inhibitor, is widely used to treat arthritis and other inflammatory disorders. Awareness of its anti-proliferative properties has prompted another indication for its use, in preventing colon polyps in high-risk populations. Farnesylthiosalicylic acid (FTS; Salirasib®), designed to inhibit oncogenic Ras and currently under evaluation in phase I/II and II clinical trials, was recently shown by our group to exert anti-inflammatory effects on both lymphocytes and mast cells. Here we examined whether celecoxib combined with FTS would enhance this anti-inflammatory activity. While each drug separately inhibited Ras activation in these cells, their combination yielded more marked inhibition as well as further inhibition of ERK phosphorylation, lymphocyte adhesion, and interleukin-2 secretion. The inhibitory effects, moreover, were independent of prostaglandin E2 secretion. These data point to the promising potential of combined treatment with celecoxib and FTS for inflammatory disorders involving lymphocytes.