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 APB5 monoclonal antibody specifically recognizes CD140b, the Platelet-Derived Growth Factor Receptor beta chain (PDGFRβ). CD140b is a single-pass type I transmembrane glycoprotein that contains an intracellular tyrosine kinase domain. This receptor is encoded by Pdgfrb and is widely expressed on cells within embryonic tissues and cells of mesenchymal origin in the adult mouse including fibroblasts and vascular smooth muscle cells. CD140b forms homodimers or heterodimeric receptor complexes with CD140a (PDGFRα) upon binding various dimeric Platelet-Derived Growth Factors (PDGF) isoforms that lead to receptor activation. Upon activation, CD140b is autophosphorylated at multiple tyrosine sites and, in turn, initiates several signaling cascades by binding and activation of cytoplasmic SH2 domain-containing signal transduction molecules, such as GRB2, Src, GAP, PI3 kinase, PLCγ, and NCK. These signaling pathways regulate cellular growth and proliferation, survival, differentiation, and migration involved in the development of embryonic tissues, blood vessel formation, wound healing, and in a range of diseases including fibrotic conditions, atherosclerosis, and malignancies.
Development References (7)
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Andrae J, Gallini R, Betsholtz C. Role of platelet-derived growth factors in physiology and medicine.. Genes Dev. 2008; 22(10):1276-312. (Biology). View Reference
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Cossarizza A, Chang HD, Radbruch A, et al. Guidelines for the use of flow cytometry and cell sorting in immunological studies (second edition).. Eur J Immunol. 2019; 49(10):1457-1973. (Clone-specific). View Reference
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Cremasco V, Woodruff MC, Onder L, et al. B cell homeostasis and follicle confines are governed by fibroblastic reticular cells.. Nat Immunol. 2014; 15(10):973-81. (Clone-specific: Flow cytometry). View Reference
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Ostman A, Heldin CH. Involvement of platelet-derived growth factor in disease: development of specific antagonists.. Adv Cancer Res. 2001; 80:1-38. (Biology). View Reference
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Patenaude J, Perreault C. Thymic Mesenchymal Cells Have a Distinct Transcriptomic Profile.. J Immunol. 2016; 196(11):4760-70. (Clone-specific: Flow cytometry). View Reference
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Sano H, Sudo T, Yokode M, et al. Functional blockade of platelet-derived growth factor receptor-beta but not of receptor-alpha prevents vascular smooth muscle cell accumulation in fibrous cap lesions in apolipoprotein E-deficient mice.. Circulation. 2001; 103(24):2955-60. (Immunogen: Functional assay, Immunohistochemistry, Western blot). View Reference
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Sano H, Yokode M, Takakura N, et al. Study on PDGF receptor beta pathway in glomerular formation in neonate mice.. Ann N Y Acad Sci. 2001; 947:303-5. (Clone-specific: Immunohistochemistry, Western blot). View Reference
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.