The RM153 monoclonal antibody specifically recognizes a 40-kDa type-II membrane glycoprotein, CD30 ligand (CD30L or CD153), which belongs to the NGF/TNF superfamily. In the presence of cytokines, CD153 stimulates B-cell proliferation, antigen-specific antibody production, and polyclonal immunoglobulin secretion. In addition, it costimulates the proliferation of activated T cells. This molecule is expressed on activated T cells, predominantly CD4+, on activated EL4 cells, and on activated Th1 and Th2 cells. The RM153 mAb inhibits the binding of CD153 to CD30.
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.