The ME-9F1 monoclonal antibody specifically binds to mouse CD146. The CD146 adhesion molecule is a type 1 transmembrane glycoprotein and member of the immunoglobulin superfamily. CD146 is expressed by blood vessel endothelial cells and may play roles in forming intercellular junctions between endothelial cells and influencing the transendothelial migration of other cell types. CD146 is also expressed by some melanoma cell lines, NK cells and neutrophils. CD146 is not detectable on mouse monocytes, dendritic cells, T cells, NKT cells, B cells and smooth muscle cells. Increased expression of CD146 is reportedly associated with NK cell maturation and may be used to characterize different functional NK cell subsets. Activated CD146-positive mouse NK cells reportedly are less cytotoxic and secrete less IFN-γ than their CD146-negative counterparts.
The antibody was conjugated to BD Horizon BUV615 which is part of the BD Horizon Brilliant™ Ultraviolet family of dyes. This dye is a tandem fluorochrome with an Ex Max near 350 nm and an Em Max near 615 nm. BD Horizon Brilliant BUV615 can be excited by the ultraviolet laser (355 nm) and detected with a 610/20 filter and a 595 nm LP. Due to the excitation of the acceptor dye by the blue/yellow-green laser line, there may be significant spillover into channels detecting PE-CF594 like emissions (eg, 610/20-nm filter).