The 68-5H11 monoclonal antibody specifically binds to CD62E. This adhesion molecule is a 97-115 kDa type I transmembrane glycoprotein that is encoded by the SELE gene. CD62E is also known as E-selectin, Endothelial-leukocyte adhesion molecule-1 (ELAM-1), and Leukocyte endothelial cell adhesion molecule 2 (LECAM-2). CD62E is minimally expressed by unstimulated endothelium. Activated endothelial cells upregulate surface CD62E expression in response to various activators including inflammatory cytokines such as Interleukin-1 and Tumor Necrosis Factor. CD62E plays a role in leucocyte extravasation by promoting leucocyte rolling on activated endothelial cells during inflammation. CD62E may also play a role in the metastasis of certain tumor cells. The adhesion between endothelial CD62E molecules and a carbohydrate ligand on neutrophils is inhibited by the mAb 68-5H11.
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.