Identification and Characterization of Small Molecule Modulators of the Epstein–Barr Virus-Induced Gene 2 (EBI2) Receptor
作者:Francois Gessier、Inga Preuss、Hong Yin、Mette M. Rosenkilde、Stephane Laurent、Ralf Endres、Yu A. Chen、Thomas H. Marsilje、Klaus Seuwen、Deborah G. Nguyen、Andreas W. Sailer
DOI:10.1021/jm4019355
日期:2014.4.24
Oxysterols have recently been identified as natural ligands for a G protein-coupled receptor called EBI2 (aka GPR183) (Nature 2011, 475, 524; 519). EBI2 is highly expressed in immune cells (J. Biol. Chem. 2006, 281, 13199), and its activation has been shown to be critical for the adaptive immune response and has been genetically linked to autoimmune diseases such as type I diabetes (Nature 2010, 467, 460). Here we describe the isolation of a potent small molecule antagonist for the EBI2 receptor. First, we identified a small molecule agonist NIBR51 (1), which enabled 0 identification of inhibitors of receptor activation. One antagonist called NIBR127 (2) was used as a starting point for a medicinal chemistry. campaign, which yielded NIBR189 (4m). This compound was extensively characterized in binding and various functional signaling assays. Furthermore, we have used 4m to block migration of a monocyte cell line called U937, suggesting a functional role of the oxysterol/EBI2 pathway in these immune cells.