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).
The antibody was conjugated to BD Horizon™ BV421 which is part of the BD Horizon Brilliant™ Violet family of dyes. With an Ex Max of 407-nm and Em Max at 421-nm, BD Horizon BV421 can be excited by the violet laser and detected in the standard Pacific Blue™ filter set (eg, 450/50-nm filter). BD Horizon BV421 conjugates are very bright, often exhibiting a 10 fold improvement in brightness compared to Pacific Blue conjugates.