JMS-17-2 hydrochloride, a highly potent and selective CX3CR1 antagonist with an IC 50 value of 0.32 nM, effectively impedes the metastatic seeding and colonization process of breast cancer cells.
Vercirnon (GSK1605786A) sodium is an orally bioavailable, selective, and potent antagonist of CCR9 . Vercirnon sodium inhibits CCR9-mediated Ca 2+ mobilization and chemotaxis on Molt-4 cells with IC 50 values of 5.4 and 3.4 nM, respectively. Vercirnon sodium is selective for CCR9 over CCR1-12 and CX3CR1-7 (IC 50 s>10 μM for all). Vercirnon sodium is an equipotent inhibitor of CCL25-directed chemotaxis of both splice forms of CCR9 (CCR9A and CCR9B) with IC 50 values of 2.8 and 2.6 nM, respectively.