The F11 monoclonal antibody specifically recognizes integrin β3 chain (CD61), which associates with the integrin αv chain (CD51), to form the vitronectin receptor found on endothelial cells, myeloid cells, and osteoclasts, and with the αIIb chain (CD41) on platelets and megakaryocytes. Both receptors mediate adhesion to fibronectin, fibrinogen, vitronectin, thrombospondin, and von Willebrand factor. The F11 antibody reportedly blocks the in vitro attachment of osteoclasts to several ligands. Weak F11 antibody reactivity with human osteoclasts, megakaryocytes, and platelets has also been reported.
The antibody was conjugated to BD Horizon Red 718, which has been developed exclusively for BD Biosciences as a better alternative to Alexa Fluor® 700. BD Horizon Red 718 can be excited by the red laser (628 – 640 nm) and, with an Em Max around 718 nm, it can be detected using a 730/45 nm filter. Due to similar excitation and emission properties, we do not recommend using R718 in combination with APC-R700 or Alexa Fluor® 700.