GW3965 hydrochloride

GW3965 hydrochloride is an agonist for the liver X receptor (LXR), reduces angiotensin II-mediated pressor responses in Sprague-Dawley rats. GW3965 acts as a full agonist of hLXRα and hLXRβ (EC50 values are 190 and 30 nM respectively) in cell-based reporter gene assays. It is orally active in mice. When screened against a panel of nuclear receptors, it cross-reacted with only the pregnane X receptor (PXR). GW3965 hydrochloride displays potent antiatherogenic activity in mouse models of atherosclerosis. GW3965 dosing blunted the vasopressor effect of Ang II, which was significantly different with the 0.3 and 3 microg kg(-1) doses. GW3965 decreased Ang II-mediated vasopressor responses coincident with a trend toward reduced ATR gene expression, suggesting that LXR agonists could affect vascular reactivity. Alternate studies suggest that GW3965 hydrochloride increases apoA-I protein levels in the central nervous system independent of ABCA1. Since ABCA1 is a major regulator of cholesterol and phospholipid metabolism, GW3965 hydrochloride is a useful tool to study these cellular functions.