The Zt/g4 monoclonal antibody specifically binds to RON, which is also known as CD136, Macrophage-stimulating protein receptor (MSP-Receptor, MSP-R), Macrophage stimulating 1 receptor (c-met-related tyrosine kinase) (MST1R), or Protein-tyrosine kinase 8 (PTK8). RON is a type I transmembrane glycoprotein that belongs to the receptor tyrosine kinase family. It is expressed on cells as a disulfide-linked heterodimer. RON is expressed on macrophages, keratinocytes, erythroblasts and epithelial cells from the skin, lung, kidney, liver, intestine, colon, and bone marrow. RON reportedly regulates many physiological processes including the survival, migration, differentiation, and effector functions of a variety of cell types including epithelial cells, and macrophages. RON binds Macrophage stimulating protein (MSP). Overexpression of RON may contribute to the malignant transformation of epithelial cells.
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).