The MEM-78 monoclonal antibody specifically recognizes CD10. CD10 is a 100 kDa type II transmembrane, glycosylated, zinc-containing metalloprotease. The CD10 antigen is also known as common acute lymphoblastic leukemia antigen (CALLA), neutral endopeptidase (NEP), gp100, and enkephalinase. The CD10 antigen is found on lymphocytes from samples with acute B-lymphoid leukemia. The CD10 antigen is also present on a wide variety of normal and neoplastic cell types including renal epithelia, fibroblasts, granulocytes, germinal center B lymphocytes, neutrophils, some T-cell leukemias, and some lymphoma, melanoma, and glioma cell lines. The CD10 antigen cleaves a number of biologically active peptides, including fMLP, and may modulate the chemotactic activity of fMLP towards neutrophils. Inhibition of the CD10 antigen promotes B-cell maturation, suggesting that it plays a role in B-cell development.
The antibody was conjugated to BD Horizon™ BUV563 which is part of the BD Horizon Brilliant™ Ultraviolet family of dyes. This dye is a tandem fluorochrome of BD Horizon BUV395 which has an Ex Max of 348 nm and an acceptor dye. The tandem has an Em Max at 563 nm. BD Horizon BUV563 can be excited by the 355 nm ultraviolet laser. On instruments with a 561 nm Yellow-Green laser, the recommended bandpass filter is 585/15 nm with a 535 nm long pass to minimize laser light leakage. When BD Horizon BUV563 is used with an instrument that does not have a 561 nm laser, a 560/40 nm filter with a 535 nm long pass may be more optimal. Due to the excitation and emission characteristics of the acceptor dye, there may be spillover into the PE and PE-CF594 detectors. However, the spillover can be corrected through compensation as with any other dye combination.