The Neu 24.7 monoclonal antibody specifically recognizes HER-2/neu, which is also known as p185HER2 or CD340. HER-2/neu is a ~185 kDa type I transmembrane glycoprotein that is encoded by ERBB2 (erb-b2 receptor tyrosine kinase 2) which belongs to the ERBB receptor kinase family. The HER-2/neu antigen is expressed on some breast cancer cells. Amplification and/or over expression of HER-2/neu occurs in multiple human malignancies. Overexpression is reported to be strongly correlated with progression of human ovarian and breast carcinomas. Anti-HER-2/neu stains the external domain of this protein on cells such as the strongly expressing line SKBR3 and the weakly expressing line MCF7. HER-2/neu is also expressed on normal bone marrow mesenchymal stem cells (MSC).
This antibody is conjugated to BD Horizon™ BV605 which is part of the BD Horizon Brilliant™ Violet family of dyes. With an Ex Max of 407-nm and Em Max of 602-nm, BD Horizon BV605 can be excited by a violet laser and detected with a standard 610/20-nm filter set. BD Horizon BV605 is a tandem fluorochrome of BD Horizon BV421 and an acceptor dye with an Em max at 605-nm. Due to the excitation of the acceptor dye by the green (532 nm) and yellow-green (561 nm) lasers, there will be significant spillover into the PE and BD Horizon PE-CF594 detectors off the green or yellow-green lasers. BD Horizon BV605 conjugates are very bright, often exhibiting brightness equivalent to PE conjugates and can be used as a third color off of the violet laser.