Biochem/physiol Actions

Paquinimod (ABR-215757) is an orally active quinoline-3-carboxamide (Q substance) class immunomodulator that targets S100A9 (Calgranulin B; MRP14) via direct binding and blocks its interaction with receptor for advanced glycation end products (RAGE) and Toll-like receptor 4 (IC₅₀ = 26 µM & 23 µM against 100 nM hS100A9 from binding immobilized hRAGE & hTLR4/MD2, respectively). Paquinimod in vivo efficacy is demonstrated in murine models of autoimmune/inflammatory diseases, including liver fibrosis, collagen-induced osteoarthritis, peritonitis, EAE, type 1 diabetes, lupus (0.04-25 mg/kg/day p.o.), and atherosclerosis (10 mg/kg i.p.).