The 11G2 monoclonal antibody specifically binds to CD156c which is also known as Disintegrin and metalloproteinase domain-containing protein 10 (ADAM10). CD156c is a ~70 kDa type I transmembrane glycoprotein that belongs to the ADAM family. It is widely expressed on hematopoietic and non-hematopoietic cells. CD156c is expressed on the plasma membrane, as well as by membranes within intracellular compartments and exosomes. CD156c serves as a broadly-reactive endopeptidase that cleaves membrane-bound proteins in a process known as ectodomain shedding or release. It can cleave transmembrane molecules into soluble forms and thereby regulate the functions of a variety of different receptors and ligands that are involved in cellular signaling and adhesion. These include membrane TNF, CX3CL1, CXCL16, Ephrin-A2, Notch and Delta molecules, cadherins, CD23, CD44, IL-6 Receptor/CD126, CD171, and amyloid precursor protein. CD156c expression may be constitutive or induced, such as in inflamed tissues, including arthritic joints and in the nervous system. Dysregulated CD156c expression may be associated with certain cancers and Alzheimer's disease.
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.