NLG919, small molecule IDO pathway inhibitor(ab231505)

MW 282.4 Da. NLG919 is a potent indoleamine 2,3-dioxygenase (IDO) pathway inhibitor (Ki = 7 nM; EC50 = 75 nM) in cell-free assays. It inhibits IDO-induced T cell suppression and restores T cell response during allogenic mixed lymphocyte reactions in vitro (ED50 = 80 and 120 nM, respectively). NLG919 promotes a 95% reduction in tumor volume in vivo when administered in conjunction with a pmel-1 T cell vaccine. NLG919 overcomes IDO-induced suppression of antigen-specific T-cells in in vitro models.