Biological Activity
PF-05480090 (PF-5480090; TMI-2) is an orally activepotent TACE (ADAM17) inhibitor (IC50 = 2 nM) with good selectivity over ADAM10 (IC50 = 1.09 μM)MMP-1/7 (IC50 = 2.47/0.96 μM) and MMP-8/9/13/14 (IC50 =35/ 777/96/582 nM). TMI-2 inhibits LPS-induced TNF production in cultrues (RAW/THP-1 IC50 = 200/430 nM)ex vivo (human whole blood IC50 = 1 μM) and in vivo (ED50 = 3 mg/kg; TMI-2 p.o. 1 hr prior to 40 ng LPS/mouse i.v.). TMI-2 is efficacious in a r at model of adjuvant-induced arthritis (AIA; 30 and 100 mg/kg p.o. b.i.d.) and a murine model of collagen-induced arthritis (CIA; 100 mg/kg p.o. b.i.d.).
