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™ BUV661 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 661-nm. BD Horizon Brilliant BUV661 can be excited by the ultraviolet laser (355 nm) and detected with a 670/25 filter and a 630 nm LP. Due to cross laser excitation of this dye, there may be significant spillover into channels detecting APC-like emissions (eg, 670/25-nm filter).
Due to spectral differences between labeled cells and beads, using BD™ CompBeads can result in incorrect spillover values when used with BD Horizon BUV661 reagents. Therefore, the use of BD CompBeads or BD CompBeads Plus to determine spillover values for these reagents is not recommended. Different BUV661 reagents (eg, CD4 vs. CD45) can have slightly different fluorescence spillover therefore, it may also be necessary to use clone-specific compensation controls when using these reagents.