The W8E7 monoclonal antibody (Anti-CALLA) specifically recognizes CD10. The W8E7 antibody recognizes a 100 kDa human common acute lymphoblastic leukemia antigen (CALLA). The CD10 antigen is identical to human membrane-associated neutral endopeptidase (NEP), also known as enkephalinase. The CD10 antigen is found on lymphocytes from acute B-lymphoid leukemia samples. The antigen is also present on a wide variety of normal and neoplastic cell types including early B-lineage cells, germinal center B cells, fetal thymocytes, granulocytes, renal epithelium, fibroblasts, and some lymphoma, melanoma, and glioma cell lines.
The antibody was conjugated to BD Horizon™ BUV496 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 496-nm. BD Horizon BUV496 can be excited by the ultraviolet laser (355 nm) and detected with a 515/30 nm filter with a 450LP. Due to the excitation of the acceptor dye by other laser lines, there may be significant spillover into the channel detecting BD Horizon V500 or BV510 (eg, 525/40-nm filter). However, the spillover can be corrected through compensation as with any other dye combination.