The 7-517 monoclonal antibody specifically binds to CD276, also known as B7-H3 (B7 homolog 3). CD276 is a type I transmembrane glycoprotein and member of the B7 family of immunoregulatory proteins. Although the CD276 gene transcript is expressed in nearly all normal tissues, the protein is preferentially expressed in tumors, tumor cell lines, sinonasal epithelial cells, and extravillous trophoblast and Hofbauer cells of the placenta. CD276 protein expression can be induced by activation of T and B lymphocytes, natural killer (NK) cells and antigen-presenting cells. The roles of CD276 in the regulation of immune responses, especially to cancer, are under investigation.
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.