Tripeptide substance P (SP) antagonist (IC50 = 90 μM). Also inhibits binding of SP to Mas-related GPCR (MRGPR) X2. Inhibits SP-induced IgE-independent degranulation of mast cells in vitro. Inhibits compound 48/80-induced MRGPRX2 activation and scratching
QWF acetate 是一种 Substance P 拮抗剂,能够特异性地抑制 Substance P 与其受体(NK1)的结合,IC50 为 0.09 Μm;还可以抑制 Mas 相关 G 蛋白偶联受体 X2(MRGPRX2)的激活,从而抑制肥大细胞的脱颗粒,QWF醋酸盐作为多肽在疼痛、炎症和过敏反应的研究中具有重要应用。