Preparation And Storage
Recommended Assay Procedures
BD™ CompBeads can be used as surrogates to assess fluorescence spillover (Compensation). When fluorochrome conjugated antibodies are bound to CompBeads, they have spectral properties very similar to cells. However, for some fluorochromes there can be small differences in spectral emissions compared to cells, resulting in spillover values that differ when compared to biological controls. It is strongly recommended that when using a reagent for the first time, users compare the spillover on cells and CompBead to ensure that BD Comp beads are appropriate for your specific cellular application.
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) or the BD Horizon Brilliant Stain Buffer Plus (Cat. No. 566385).
For optimal results, it is recommended to perform 2 washes after staining with antibodies. Cells may be prepared, stained with antibodies and washed twice with wash buffer per established protocols for immunofluorescence staining, prior to acquisition on a flow cytometer. Performing fewer than the recommended wash steps may lead to increased spread of the negative population.
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.
- 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.
- The manufacture, use, sale, offer for sale, or import of this product is subject to one or more patents or pending applications. This product, and only in the amount purchased by buyer, may be used solely for buyer’s own internal research, in a manner consistent with the accompanying product literature. No other right to use, sell or otherwise transfer (a) this product, or (b) its components is hereby granted expressly, by implication or by estoppel. Diagnostic uses require a separate license.
- For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
- Please refer to http://regdocs.bd.com to access safety data sheets (SDS).
- Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
Companion Products
The G8.8 monoclonal antibody recognizes CD326/Ep-CAM (Epithelial Cell Adhesion Molecule), also known as gp40 in the mouse and by a variety of names (including GA733-2, CO17-1A, and EGP) in the human. In the mouse, Ep-CAM is a 40-42 kDa cell-surface type 1 transmembrane glycoprotein expressed on thymic epithelial cells, thymic dendritic cells, immature thymocytes, a small subset of peripheral T lymphocytes, intestinal epithelium, kidney-collecting tubule epithelium, keratinocytes, Langerhans cells and lymph node and splenic dendritic cells. Profiles of Ep-CAM expression on fetal thymocytes and on the CD4[-] CD8[-], CD4[+] CD8[+], CD4[-] CD8[+], and CD4[+] CD8[-] subsets of adult thymocytes have been published. In unrelated studies, mouse Ep-CAM mRNA was detected in tissues containing epithelial cells (kidney, stomach, intestine, lung, and thymus) and in plasma cells and plasmacytomas, but not in heart, muscle, liver, brain, spleen, B lymphomas, or pre-B lymphomas. Ep-CAM is a Ca[2+] independent homophilic adhesion molecule that is proposed to play roles in the development and normal function of epithelial tissues and in the progression of carcinomas.
The antibody was conjugated to BD Horizon BB515 which is part of the BD Horizon Brilliant™ Blue family of dyes. With an Ex Max near 490 nm and an Em Max near 515 nm, BD Horizon BB515 can be excited by the blue laser (488 nm) laser and detected with a 530/30 nm filter. This dye has been exclusively developed by BD Biosciences and is up to seven times brighter than FITC with less spillover into the PE channel. Due to similar excitation and emission properties, BB515, FITC, and Alexa Fluor® 488 cannot be used simultaneously. It is not recommended to use BB515 in cocktails that include Streptavidin conjugates as it may cause high background.
Development References (9)
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Basak S, Speicher D, Eck S, Wunner W. Colorectal carcinoma invasion inhibition by CO17-1A/GA733 antigen and its murine homologue. J Natl Cancer Inst. 1998; 90(9):691-697. (Biology). View Reference
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Bergsagel PL, Victor-Kobrin C, Timblin CR, Trepel J, Kuehl WM. A murine cDNA encodes a pan-epithelial glycoprotein that is also expressed on plasma cells. J Immunol. 1992; 148(2):590-596. (Biology). View Reference
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Birebent B, Somasundaram R, Purev E. Anti-idiotypic antibody and recombinant antigen vaccines in colorectal cancer patients. Crit Rev Oncol Hematol. 2001; 39((1-2)):107-113. (Biology). View Reference
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Borkowski TA, Nelson AJ, Farr AG, Udey MC. Expression of gp40, the murine homologue of human epithelial cell adhesion molecule (Ep-CAM), by murine dendritic cells. Eur J Immunol. 1996; 26(1):110-114. (Clone-specific: Immunohistochemistry). View Reference
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Farr A, Nelson A, Truex J, Hosier S. Epithelial heterogeneity in the murine thymus: a cell surface glycoprotein expressed by subcapsular and medullary epithelium. J Histochem Cytochem. 1991; 39(5):345-353. (Immunogen: Electron microscopy, Immunohistochemistry, Immunoprecipitation). View Reference
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Litvinov SV, Balzar M, Winter MJ. Epithelial cell adhesion molecule (Ep-CAM) modulates cell-cell interactions mediated by classic cadherins. J Biol Chem. 1997; 139(5):1337-1348. (Biology). View Reference
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Nelson AJ, Dunn RJ, Peach R, Aruffo A, Farr AG. The murine homolog of human Ep-CAM, a homotypic adhesion molecule, is expressed by thymocytes and thymic epithelial cells. Eur J Immunol. 1996; 26(2):401-408. (Clone-specific: Electron microscopy, Immunohistochemistry, Immunoprecipitation). View Reference
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Taguchi N, Hashimoto Y, Naiki M. Abnormal thymic expression of epithelial cell adhesion molecule (EP-CAM) in New Zealand Black (NZB) mice. J Autoimmun. 1999; 13(4):393-400. (Clone-specific: Electron microscopy). View Reference
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Zutter MM. Gastrointestinal carcinoma antigen GA733: target for immunodestruction and potential modifier of invasiveness and chemoresponsiveness. J Natl Cancer Inst. 1998; 90(9):642-644. (Biology). View Reference
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