671204-98-1

YM-344031 is an orally active antagonist for CCR3. YM-344031 inhibits binding of Eotaxin-1 and RANTES to CCR3, with IC50 of 3.0 and 16.3 nM. YM-344031 inhibits ligand-induced rise in intracellular Ca[2+] and the ligand-induced chemotaxis. YM-344031 inhibits eotaxin-1-induced changes in eosinophil morphology in macaques blood, and prevents allergic skin reactions in a mouse allergy model[1].

CCR3

[1] Suzuki K, et al., In vitro and in vivo characterization of a novel CCR3 antagonist, YM-344031. Biochem Biophys Res Commun. 2006 Jan 27;339(4):1217-23. DOI:10.1016/j.bbrc.2005.11.141