Mouse Anti-Human CD155/PVR Antibody (SKII.4)

CD155, also designated PVR (poliovirus receptor) and Necl-5, is a ~70 kDa primate-restricted type I transmembrane glycoprotein of the immunoglobulin superfamily that contains one V-type and two C2-type extracellular Ig-like domains, a 24-aa transmembrane segment and a 50-aa cytoplasmic tail; it serves as the cellular entry receptor for poliovirus, mediates cell adhesion by binding vitronectin and nectin-3, and engages immune receptors DNAM-1/CD226, CD96 and TIGIT to regulate NK-cell cytotoxicity, T-cell activation and tumor-cell recognition, while its expression—up-regulated by IFN-γ on endothelial cells and abundant on immature thymocytes, dendritic cells and epithelial/neuronal tumor cells—promotes cell migration, loss of contact inhibition and transendothelial migration.