The V24-785 monoclonal antibody binds specifically to BDCA-2 (Blood Dendritic Cell Antigen 2), also known as CD303. As a member of the C-type lectin (CLEC) superfamily, it is an adhesion receptor that binds to galactose-terminated desialylated glycans on cell surfaces and on serum IgG. In the blood, BDCA-2 is expressed only on plasmacytoid dendritic cells (pDC). TLR-9 mediates the production of large amounts of IFN-α and IFN-β by activated pDC, and crosslinking of BDCA-2 inhibits that response.
The antibody was conjugated to BD Horizon™ BUV805 which is part of the BD Horizon Brilliant™ Ultraviolet family of dyes. This dye is a tandem fluorochrome of BD Horizon BUV395 with an Ex Max of 348 nm and an acceptor dye with an Em Max at 805 nm. BD Horizon Brilliant BUV805 can be excited by the ultraviolet laser (355 nm) and detected with a 820/60 filter and a 770LP.