VX 702

VX-702 is a highly selective inhibitor of p38α MAPK(IC50=4 -20 nM), 14-fold higher potency against the p38α versus p38β.IC50 value: 4-20 nM [1]Target: p38α MAPKin vitro: Pre-incubation of platelets with VX-702 (1 μM) completely or partially inhibits p38 activation (IC50 4 to 20 nM) induced by platelet agonists including thrombin, SFLLRN, AYPGKF, U46619 and collagen. VX-702 shows no effect on platelet aggregation induced by any of the p38 MAPK agonists in the presence or absence of anti-p

VX-702 is a third generation inhibitor of p38 mitogen-activated protein (MAP) kinases, binding to both p38α and p38β (Kd = 3.7 and 17 nM, respectively) in an ATP-competitive fashion. It inhibits IL-6, IL-1β, and TNF-α production in LPS-primed blood with IC50 values of 59, 122, and 99 ng/ml, respectively. VX-702, at 1 μM, inhibits activation of p38 in platelets by thrombin, U-46619 , or collagen but does not block platelet aggregation in response to collagen. Although orally active, VX-702 provides only transient suppression of biomarkers of inflammation in ongoing rheumatoid arthritis.[Cayman Chemical]