The IK22-5 monoclonal antibody specifically recognizes CD254, which is also known as, Receptor Activator of NF-kB Ligand (RANKL), TNF-Related Activation-Induced Cytokine Receptor (Trance), Osteoprotegerin Ligand (OPGL), or Osteoclast Differentiation Factor (ODF). CD254/RANKL is likewise known as Tnfsf11, a member of the tumor necrosis factor family. RANKL has been implicated in interactions between T cells and dendritic cells. RANKL binds to RANK expressed on dendritic cells and upregulates the expression of anti-apoptotic protein BcL-XL suggesting a role in dendritic cell survival. RANKL is also important in T- and B-cell maturation. RANKL can both activate mature osteoclasts and mediate osteoclastogenesis. OPGL-deficient mice show severe osteoporosis and complete absence of osteoclasts as a result of lack of osteogenesis. It is expressed abundantly by mouse activated T cells, not B cells. It is also expressed on osteoclasts.
This antibody is conjugated to BD Horizon™ BV605 which is part of the BD Horizon Brilliant™ Violet family of dyes. With an Ex Max of 407-nm and Em Max of 602-nm, BD Horizon BV605 can be excited by a violet laser and detected with a standard 610/20-nm filter set. BD Horizon BV605 is a tandem fluorochrome of BD Horizon BV421 and an acceptor dye with an Em max at 605-nm. Due to the excitation of the acceptor dye by the green (532 nm) and yellow-green (561 nm) lasers, there will be significant spillover into the PE and BD Horizon PE-CF594 detectors off the green or yellow-green lasers. BD Horizon BV605 conjugates are very bright, often exhibiting brightness equivalent to PE conjugates and can be used as a third color off of the violet laser.