The Q38-480 monoclonal antibody specifically binds to mouse CD150, also known as SLAM (signaling lymphocyte activation molecule). CD150 is a type 1 transmembrane glycoprotein that is a member of the CD2 subfamily of the Ig superfamily. It is encoded by the Slamf1 (signaling lymphocytic activation molecule family member 1) gene. CD150 is differentially expressed on subsets of thymocytes, T and B lymphocytes, dendritic cells, macrophages, and endothelial cells. SLAM plays multiple roles in innate and adaptive immunity serving as an adhesion molecule and/or coreceptor. CD150-mediated costimulation of TCR-activated T cells reportedly results in the increased production of IFN-γ by Th1 cells and is required for IL-4 production by T follicular helper cells. CD150 also plays important roles in hematopoietic cell developmental pathways. CD150 is differentially expressed by self-renewing adult hematopoietic stem cells (HSC) whereas non-multipotent hematopoietic progenitor cells are CD150-. Utilizing additional cell surface markers, lineage-negative CD150+CD48-CD41- cell fractions are reported to be highly enriched for adult HSC.
This antibody is conjugated to BD Horizon™ PE-CF594, which has been developed exclusively by BD Biosciences as a better alternative to PE-Texas Red®. PE-CF594 excites and emits at similar wavelengths to PE-Texas Red® yet exhibits improved brightness and spectral characteristics. Due to PE having maximal absorption peaks at 496 nm and 564 nm, PE-CF594 can be excited by the blue (488-nm), green (532-nm) and yellow-green (561-nm) lasers and can be detected with the same filter set as PE-Texas Red® (eg, 610/20-nm filter).