Leukotriene B4 (LTB4) is a dihydroxy fatty acid derived from arachidonic acid through the 5-LO pathway. It promotes a number of leukocyte functions including aggregation, stimulation of ion fluxes, enhancement of lysosomal enzyme release, superoxide anion production, chemotaxis, and chemokinesis. In subnanomolar...

SHP099 is an orally bioavailable inhibitor of SHP2, a non-receptor protein tyrosine phosphatase (IC50 = 71 nM). It stabilizes SHP2 in an auto-inhibited conformation. SHP099 suppresses signaling through the Ras-ERK pathway and blocks the proliferation of receptor tyrosine kinase-driven human cancer cells in vitro and...

SB-742457 is an orally bioavailable antagonist of the serotonin (5-HT) receptor subtype 5-HT6 (Ki = 1.4 nM). SB-742457 (1 µM) also binds to 5-HT1B, 5-HT2A, 5-HT2B, and 5-HT2C receptors with high affinity. SB-742457 reduces 5-HT6 activation of Gs-mediated cAMP production in a concentration-dependent manner with an...

SKF 83959 is a partial agonist at the dopamine D1-like receptors (Kis = 1.18 and 7.56 nM, respectively, for D1 and D5) that is selective over the D2-like receptors (Kis = 920 and 399 nM, respectively, for D2 and D3). It is protective against oxidative stress in retinal ganglion cells after hydrogen peroxide-induced...

Leukotriene A4 (LTA4) is synthesized in mast cells, eosinophils, and neutrophils from arachidonic acid by 5-lipoxygenase (5-LO), which exhibits both lipoxygenase and LTA4 synthase activities. LTA4 is rapidly metabolized by LTA4 hydrolase or LTC4 synthase to LTB4 or LTC4, respectively. LTA4, from leukocytes, is known...