CD47, originally named integrin-associated protein (IAP), is a 50-kDa protein containing five membrane spanning sequences and a short cytoplasmic tail. CD47 appears to be important in myeloid cell activation and migration across endothelial and epithelial monolayers. Anti-CD47 antibody has been shown to inhibit polymorphonuclear neutrophil (PMN) transmigration across cell monolayers and matrix. CD47 and its ligands, thrombospondin 1 (TSP-1) and SIRP-a, are important regulators of dendritic cells. Recently, it has been shown that CD47 and TLR2 cross-talk to regulate PMN transmigration. The activation of TLR2/6 by MALP-2, a TLR2 specific agonist, potently inhibits human and murine PMN transmigration. The cross-talk between TLR2 and CD47 may be mediated through MYD88.
Anti-CD47 Antibody (Monoclonal) was produced by repeated immunizations with CD47 antigen.