The 2.4E6 monoclonal antibody specifically binds to CD212, which is also known as the Interleukin-12 Receptor beta-1 chain (IL12RB1/IL-12RB1/IL-12Rβ1). CD212 serves as a subunit for the functional IL-12 Receptor (IL-12Rβ1-IL-12Rβ2) and IL-23 Receptor (IL-12Rβ1-IL-23R) complexes. CD212 is expressed on T cells, B cells, or NK cells. CD212 is a type I transmembrane glycoprotein that belongs to the hemopoietin receptor superfamily. CD212 is responsible for binding to the IL-12 p40 subunit that is common to the heterodimeric IL-12 and IL-23 cytokines. IL-12 and IL-23 are immunomodulatory cytokines produced mainly by antigen-presenting cells (APC) including monocytes and dendritic cells. These cytokines have overlapping as well as distinct biological activities.
The antibody was conjugated to BD Horizon™ BUV737 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 737-nm. BD Horizon Brilliant BUV737 can be excited by the ultraviolet laser (355 nm) and detected with a 740/35 filter. Due to the excitation of the acceptor dye by other laser lines, there may be significant spillover into channels detecting Alexa Fluor® 700-like dyes (eg, 712/20-nm filter).
Due to spectral differences between labeled cells and beads, using BD™ CompBeads can result in incorrect spillover values when used with BD Horizon BUV737 reagents. Therefore, the use of BD CompBeads or BD CompBeads Plus to determine spillover values for these reagents is not recommended. Different BUV737 reagents (eg, CD4 vs. CD45) can have slightly different fluorescence spillover therefore, it may also be necessary to use clone specific compensation controls when using these reagents.