BMS-688521

BMS-688521 is a highly potent, orally active inhibitor of the LFA-1/ICAM interaction, with an IC50 of 2.5 nM in the adhesion assay and an IC50 of 60 nM in the MLR assay. BMS-688521 is efficacious in a mouse allergic eosinophilic lung inflammation model[1].

BMS-688521 in a mouse specific adhesion assay employed mouse splenocytes and a mouse ICAM-1 expression cell line, b.END3. BMS-688521 has an IC50 of 78 nM, representing an approximately 30-fold decrease in activity relative to the human T-cell/HUVEC assay data (ICIC50=2.5 nM)[1].

BMS-688521 (1-10 mg/kg; p.o.; BID for a three-day) is efficacious in a mouse allergic eosinophilic lung inflammation model[1].BMS-688521 (5 mg/kg; p.o.) treatment shows the Cmax, Tmax, AUC, F values are 0.32 μM, 1.0 μM, 1.5 μM h, and 50%, respectively[1].BMS-688521 (1 mg/kg; i.v.) treatment shows the T1/2, MRT, CL and Vss values are 1.6 hours, 1.7 hours, 50 mL/mim/kg, and 5.1 L/kg, respectively in BALB/c mice[1]. Animal Model: BALB/c female mice, 6-8 week of age (OVA Lung Inflammation in Mice)[1]

[1]. Watterson SH, et al. Small molecule antagonist of leukocyte function associated antigen-1 (LFA-1): structure-activity relationships leading to the identification of 6-((5S,9R)-9-(4-cyanophenyl)-3-(3,5-dichlorophenyl)-1-methyl-2,4-dioxo-1,3,7-triazaspiro[4.4]nonan-7-yl)nicotinic acid (BMS-688521). J Med Chem. 2010 May 13;53(9):3814-30.