The MHD1-314 monoclonal antibody specifically binds to Delta-Like Protein 1 which is also known as Delta1, DLL1, and DL1. Delta-Like Protein 1 is a type 1 transmembrane glycoprotein which belongs to the Delta/Serrate/Jagged Family of Notch receptor ligands. The Notch family of transmembrane receptors and their ligands play key roles in various developmental and postnatal processes by controlling cell-fate decisions. Delta-Like Protein 1 is expressed by cells within heart, pancreas, brain, muscle and hematopoietic/lymphoid tissues. This Notch ligand functions in the development and postnatal activities of the nervous and skeletal systems. It also functions in the hematopoietic and immune systems, for example, by promoting the differentiation of hematopoietic progenitors into T cell and NK cell precursors. The MHD1-314 antibody reportedly inhibits the development of osteoclasts from cultured peripheral blood monocytes suggesting that Delta-Like Protein 1 positively regulates osteoclastogenesis.
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.