GW 9662

GW9662 is a selective PPAR antagonist for PPARγ with IC50 of 3.3 nM in a cell-free assay, with at least 100 to 1000-fold functional selectivity in cells with PPARγ versus PPARα and PPARδ. (In Vitro) :GW9662 inhibits radioligand binding to PPARγ, PPARα, and PPARδ with pIC50s of 8.48±0.27 (IC50=3.3 nM; n=10), 7.49±0.17 (IC50=32 nM; n=9), and 5.69±0.17 (IC50=2000 nM; n=3), respectively. GW9662 has nanomolar IC50 versus PPARγ and is 10- and 600-fold less potent in binding experiments using PPARα and PPARδ, respectively. In cell-based reporter assays, GW9662 is a potent and selective antagonist of full-length PPARγ. Co-treatment with both 50 μM BRL 49653 and 10 μM GW9662 results in statistically lower viable cell numbers after 7 days when compared to treatment with either 50 μM BRL 49653 (P=0.001) or 10 μM GW9662 (P=0.01) alone. (In Vivo) :Bone marrow (BM) nucleated cell counts in both BADGE- and GW9662 (1 mg/kg, i.p.) -treated mice are significantly higher than counts in the aplastic anemia (AA) group. GW9662 (1 mg/kg, i.p.) largely attenuates the renoprotective effects of Lipopolysaccharide (LPS) in the rat.