EBI2

Class

EBI2 antagonist

EBI2, also known as GPR183, is a G protein-coupled receptor found on the surface of certain immune cells, including B cells, T cells, and dendritic cells. It senses a lipid-derived signal called an oxysterol, which forms in gradients within lymphoid tissue such as lymph nodes and the spleen. By following this gradient, EBI2 guides immune cells to specific locations where they interact, mature, and coordinate immune responses, including the generation of antibodies. In autoimmune and chronic inflammatory diseases, this same trafficking system can direct harmful immune cells toward tissues where they perpetuate inflammation or drive an overactive antibody response. Blocking EBI2 with an antagonist interrupts this positioning signal, aiming to limit the assembly and persistence of pathological immune activity without eliminating immune cells outright. This mechanism is of interest across conditions such as multiple sclerosis, inflammatory bowel disease, and other disorders where misdirected immune cell movement contributes to tissue damage. Because the receptor's role is largely about spatial organization of immune responses rather than a single inflammatory trigger, its modulation represents a distinct strategy compared to therapies that broadly suppress immune cell activity or block individual cytokines.