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 BD® 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 BD® CompBeads to ensure that BD® CompBeads are appropriate for your specific cellular application.
Product Notices
- Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
- Please refer to http://regdocs.bd.com to access safety data sheets (SDS).
- For U.S. patents that may apply, see bd.com/patents.
- 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.
- Since applications vary, each investigator should titrate the reagent to obtain optimal results.
- The production process underwent stringent testing and validation to assure that it generates a high-quality conjugate with consistent performance and specific binding activity. However, verification testing has not been performed on all conjugate lots.
- Human donor specific background has been observed in relation to the presence of anti-polyethylene glycol (PEG) antibodies, developed as a result of certain vaccines containing PEG, including some COVID-19 vaccines. We recommend use of BD Horizon Brilliant™ Stain Buffer in your experiments to help mitigate potential background. For more information visit https://www.bdbiosciences.com/en-us/support/product-notices.
- When using high concentrations of antibody, background binding of this dye to erythroid fragments produced by ammonium chloride-based lysis, such as with BD Pharm Lyse™ Lysing Buffer (Cat. No. 555899), has been observed when the antibody conjugate was present during the lysis procedure. This may cause nonspecific staining of target cells, such as leukocytes, which have bound the resulting erythroid fragments. This background can be mitigated by any of the following: titrating the antibody conjugate to a lower concentration, fixing samples with formaldehyde, or removing erythrocytes before staining (eg, gradient centrifugation or pre-lysis with wash). This background has not been observed when cells were lysed with BD FACS™ Lysing Solution (Cat. No. 349202) after staining.
- For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
- An isotype control should be used at the same concentration as the antibody of interest.
- Please observe the following precautions: We recommend that special precautions be taken (such as wrapping vials, tubes, or racks in aluminum foil) to protect exposure of conjugated reagents, including cells stained with those reagents, to any room illumination. Absorption of visible light can significantly affect the emission spectra and quantum yield of tandem fluorochrome conjugates.
Companion Products
The CC2C6 monoclonal antibody specifically recognizes CD47 which is also known as Integrin-associated protein (IAP), Rh-related antigen, Ovarian carcinoma antigen (OA3), MER6, or neutrophilin. CD47 is a 42-52 kDa N-linked glycan protein which has an extracellular N-terminal IgV-like domain followed by 5 transmembrane segments and a short C-terminal cytoplasmic domain. CD47 is expressed on all hematopoietic cells, including leucocytes, platelets, and erythrocytes except for Rh-negative erythrocytes. It is also expressed on epithelial cells, endothelial cells, fibroblasts, and many tumor cell lines. CD47 binds to and activates the inhibitory Signal regulatory protein α (SIRPα) expressed on phagocytic cells. This trans interaction inhibits phagocytosis and protects CD47-positive cells, including "self" blood cells like erythrocytes, from phagocytosis. CD47 binds to thrombospondin-1 which regulates cell adhesion and migration and plays a role in the regulation of inflammation and angiogenesis. CD47 can also interact with integrins which can affect various cellular functions including cellular adhesion, spreading, and migration. The CC2C6 antibody can reportedly inhibit the interaction between CD47 and SIRPα.
Development References (4)
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Lindberg FP, Gresham HD, Schwarz E, Brown EJ. Molecular cloning of integrin-associated protein: an immunoglobulin family member with multiple membrane-spanning domains implicated in alpha v beta 3-dependent ligand binding. J Cell Biol. 1993; 123(2):485-496. (Biology). View Reference
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Lindberg FP, Lublin DM, Telen MJ, et al. Rh-related antigen CD47 is the signal-transducer integrin-associated protein. J Biol Chem. 1994; 269(3):1567-1570. (Biology). View Reference
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Seiffert M, Cant C, Chen Z, et al. Human signal-regulatory protein is expressed on normal, but not on subsets of leukemic myeloid cells and mediates cellular adhesion involving its counterreceptor CD47. Blood. 1999; 94(11):3633-3643. (Immunogen: Blocking, Flow cytometry). View Reference
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Zola H, Swart B, Nicholson I, Voss E. CD47. In: Zola H. Leukocyte and Stromal Cell Molecules : the CD Markers. Hoboken, N.J.: Wiley-Liss; 2007:119-120.
Please refer to Support Documents for Quality Certificates
Global - Refer to manufacturer's instructions for use and related User Manuals and Technical data sheets before using this products as described
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.