The RCR-252 monoclonal antibody specifically binds to the endothelial cell protein C receptor (EPCR), which is also known as CD201. CD201 is a 25 kDa, type I transmembrane glycoprotein, expressed on endothelial cells in arteries, veins and capillaries. CD201 binds activated protein C, a serine protease that is involved in regulating blood coagulation. EPCR is reportedly expressed on several malignant cell lines. Malignant cell lines that express EPCR can show significant levels of protein C activation and this activation can be inhibited by anti-EPCR antibody
The antibody was conjugated to BD Horizon BUV615 which is part of the BD Horizon Brilliant™ Ultraviolet family of dyes. This dye is a tandem fluorochrome with an Ex Max near 350 nm and an Em Max near 615 nm. BD Horizon Brilliant BUV615 can be excited by the ultraviolet laser (355 nm) and detected with a 610/20 filter and a 595 nm LP. Due to the excitation of the acceptor dye by the blue/yellow-green laser line, there may be significant spillover into channels detecting PE-CF594 like emissions (eg, 610/20-nm filter).