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Flow cytometric analysis of CD340 (HER-2) expression on human breast cancer cell lines. Cells from either the MCF7 (ATCC HTB-22; Left Panel) or SK-BR-3 (ATCC HTB-30D-2; Right Panel) human breast adenocarcinoma cell line were stained with either BD Horizon BV421™ Mouse IgG1, κ Isotype Control (Cat. No. 562438; dashed line histograms) or BD Horizon BV421 Mouse Anti-Human CD340 (HER-2) antibody (Cat. No. 566458/566459; solid line histograms) at 0.5 μg/test. The histograms showing CD340 (HER-2) expression (or Ig Isotype control staining) were derived from gated events with the forward and side light-scatter characteristics of viable cells. Flow cytometric analysis was performed using a BD LSRFortessa™ Cell Analyzer System. Data shown on this Technical Data Sheet are not lot specific.
BD Horizon™ BV421 Mouse Anti-Human CD340 (HER-2)
Regulatory Status Legend
Any use of products other than the permitted use without the express written authorization of Becton, Dickinson and Company is strictly prohibited.
Preparation And Storage
Recommended Assay Procedures
For optimal and reproducible results, BD Horizon Brilliant Stain Buffer should be used anytime two or more BD Horizon Brilliant dyes are used in the same experiment. Fluorescent dye interactions may cause staining artifacts which may affect data interpretation. The BD Horizon Brilliant Stain Buffer was designed to minimize these interactions. More information can be found in the Technical Data Sheet of the BD Horizon Brilliant Stain Buffer (Cat. No. 563794/566349).
Product Notices
- Since applications vary, each investigator should titrate the reagent to obtain optimal results.
- An isotype control should be used at the same concentration as the antibody of interest.
- Source of all serum proteins is from USDA inspected abattoirs located in the United States.
- Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
- For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
- Pacific Blue™ is a trademark of Molecular Probes, Inc., Eugene, OR.
- BD Horizon Brilliant Violet 421 is covered by one or more of the following US patents: 8,158,444; 8,362,193; 8,575,303; 8,354,239.
- BD Horizon Brilliant Stain Buffer is covered by one or more of the following US patents: 8,110,673; 8,158,444; 8,575,303; 8,354,239.
- Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
Companion Products
The 24D2 monoclonal antibody specifically recognizes CD340 which is also known as Human epidermal growth factor receptor 2 (HER-2 or HER2), Neu (neuro/glioblastoma derived oncogene homolog), or Metastatic lymph node gene 19 protein (MLN19). CD340 (HER-2) is a ~185 kDa type I transmembrane glycoprotein that is encoded by ERBB2 (erb-b2 receptor tyrosine kinase 2) and belongs to the ERBB family of receptor tyrosine kinases that includes EGFR, HER3, and HER4. Although CD340 (HER-2) has no identified direct-binding ligand, it can form heterodimers with other ligand-bound ERBB family members. CD340 (HER-2) helps activate intracellular signaling pathways including mitogen-activated protein kinase (MAPK) and phosphatidylinositol-3 kinase (PI-3K) through its cytoplasmic tyrosine kinase-containing region. CD340 (HER-2) is expressed by bone marrow mesenchymal stem cells. It is overexpressed and plays a significant role in the development of multiple human cancers including some leukemias, neuroblastomas, and carcinomas of the breast, ovary, cervix, colon, and lung.
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.
Development References (4)
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Bühring HJ, Battula VL, Treml S, Schewe B, Kanz L, Vogel W. Novel markers for the prospective isolation of human MSC. Ann N Y Acad Sci. 2007; 1106:262-271. (Clone-specific: Flow cytometry). View Reference
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Bühring HJ, Sures I, Jallal B, et al. The receptor tyrosine kinase p185HER2 is expressed on a subset of B-lymphoid blasts from patients with acute lymphoblastic leukemia and chronic myelogenous leukemia.. Blood. 1995; 86(5):1916-23. (Immunogen: Flow cytometry). View Reference
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Yan M, Schwaederle M, Arguello D, Millis SZ, Gatalica Z, Kurzrock R. HER2 expression status in diverse cancers: review of results from 37,992 patients. Cancer Metastasis Rev. 2015; 34(1):157-164. (Biology). View Reference
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Zola H, Swart B, Banham A, et al. CD molecules 2006--human cell differentiation molecules.. J Immunol Methods. 2007; 319(1-2):1-5. (Clone-specific: Flow cytometry). View Reference
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Comparisons, where applicable, are made against older BD Technology, manual methods or are general performance claims. Comparisons are not made against non-BD technologies, unless otherwise noted.
For Research Use Only. Not for use in diagnostic or therapeutic procedures.