LXR

LXRs (Liver X Receptor α and β) are nuclear receptors that act as ligand-activated transcription factors. LXR activation causes upregulation of genes involved in reverse cholesterol transport (RCT), including ABCA1 and ABCG1 transporters, in macrophage and intestine. LXRα/β are ligand-activated transcription factors of the nuclear hormone receptor superfamily that stimulate transcription of several genes, including ABCA1 and apoE. LXRα and LXRβ respond to the same oxysterol ligands and activate transcription as obligate heterodimeric complexes with retinoid X receptors. Synthetic LXR agonists activate both LXRα and LXRβ, cross the blood-brain barrier, and efficiently induce expression of LXR target genes including ABCA1 and apoE.