Multiparameter flow cytometric analysis of HLA-DR expression on Human peripheral blood leucocyte populations. Human whole blood was stained with either BD Horizon™ RB780 Mouse IgG2a, κ Isotype Control (Cat. No. 568740; Left Plot) or BD Horizon™ RB780 Mouse Anti-Human HLA-DR antibody (Cat. No. 568767/568768; Right Plot). Erythrocytes were lysed with BD FACS™ Lysing Solution (Cat. No. 349202). The bivariate pseudocolor density plot showing the correlated expression of HLA-DR (or Ig Isotype control staining) versus side-light scatter (SSC-A) signals was derived from gated events with the forward and side light-scatter characteristics of intact leucocyte populations. Flow cytometry and data analysis were performed using a BD LSRFortessa™ Cell Analyzer System and FlowJo™ software.
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Multiparameter flow cytometric analysis of HLA-DR expression on Human peripheral blood leucocyte populations. Human whole blood was stained with either BD Horizon™ RB780 Mouse IgG2a, κ Isotype Control (Cat. No. 568740; Left Plot) or BD Horizon™ RB780 Mouse Anti-Human HLA-DR antibody (Cat. No. 568767/568768; Right Plot). Erythrocytes were lysed with BD FACS™ Lysing Solution (Cat. No. 349202). The bivariate pseudocolor density plot showing the correlated expression of HLA-DR (or Ig Isotype control staining) versus side-light scatter (SSC-A) signals was derived from gated events with the forward and side light-scatter characteristics of intact leucocyte populations. Flow cytometry and data analysis were performed using a BD LSRFortessa™ Cell Analyzer System and FlowJo™ software.
Product Details
BD Horizon™
MHC class II antigen; HLA class II histocompatibility antigen
Human (QC Testing), Rhesus,Cynomolgus,Baboon (Tested in Development)
Mouse IgG2a, κ
Human lymphoblastoid B-cell line RPMI 8866
Flow cytometry (Routinely Tested)
5 µl
3122, 3123, 3125, 3126, 3127
Aqueous buffered solution containing ≤0.09% sodium azide.
RUO
Preparation And Storage
Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze. The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. The antibody was conjugated to the dye under optimum conditions and unreacted dye was removed.
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
- 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.
- Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
- This reagent has been pre-diluted for use at the recommended Volume per Test. We typically use 1 × 10^6 cells in a 100-µl experimental sample (a test).
- An isotype control should be used at the same concentration as the antibody of interest.
- Please observe the following precautions: Absorption of visible light can significantly alter the energy transfer occurring in any tandem fluorochrome conjugate; therefore, we recommend that special precautions be taken (such as wrapping vials, tubes, or racks in aluminum foil) to prevent exposure of conjugated reagents, including cells stained with those reagents, to room illumination.
- 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.
- 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.
- Species cross-reactivity detected in product development may not have been confirmed on every format and/or application.
- Please refer to http://regdocs.bd.com to access safety data sheets (SDS).
- Cy is a trademark of Global Life Sciences Solutions Germany GmbH or an affiliate doing business as Cytiva.
- For U.S. patents that may apply, see bd.com/patents.
Companion Products
Stain Buffer (FBS) RUO
Size
500 mL
Cat No.
554656
Stain Buffer (BSA) RUO
Size
500 mL
Cat No.
554657
RB780 Mouse IgG2a, κ Isotype Control RUO
Size
50 µg
Cat No.
568740
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Lysing Solution 10X Concentrate CE_IVD
Size
100 mL
Cat No.
349202
Lysing Buffer RUO
Size
100 mL
Cat No.
555899
568768 Rev. 3
Antibody Details
G46-6
The G46-6 monoclonal antibody specifically binds to HLA-DR, a major histocompatibility complex (MHC) class II antigen. HLA-DR antigens are encoded by genes within the Human Leukocyte Antigen (HLA) Complex located on chromosome 6. HLA-DR is a transmembrane heterodimeric glycoprotein composed of an α chain (36 kDa) and a β subunit (27 kDa) expressed primarily on antigen presenting cells: B cells, dendritic cells, monocytes, macrophages, and thymic epithelial cells. HLA-DR is also expressed on activated T cells. This molecule plays a major role in mediating cellular interactions during antigen presentation to CD4-positive T cells.
568768 Rev. 3
Format Details
RB780
The BD Horizon RealBlue™ 780 (RB780) Dye is part of the BD family of blue dyes. It is a tandem fluorochrome with an excitation maximum (Ex Max) at 498-nm and an emission maximum (Em Max) at 781-nm. Driven by BD innovation, RB780 can be used on both spectral and conventional cytometers and is designed to be excited by the Blue laser (488-nm) with minimal excitation by the 561-nm Yellow-Green laser. For conventional instruments equipped with a Blue laser (488-nm), RB780 can be used as an alternative to PE-Cy7 and we recommend using an optical filter centered near 780-nm (eg, a 780/60-nm bandpass filter). For spectral instruments equipped with a Blue laser (488-nm), it can be used in conjunction with PE-Cy7. RB780 is on average brighter than PE-Cy7 and has minimal spillover into Yellow-Green detectors.
RB780
Blue 488 nm
498 nm
781 nm
568768 Rev.3
Citations & References
View product citations for antibody "568768" on CiteAb
Development References (9)
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Baracho GV, Kara N, Rigaud S, Lo E, Widmann SJ, Tyznik AJ. Functional phenotyping of circulating human cytotoxic T cells and NK cells using a 16-color flow cytometry panel.. STAR Protoc. 2022; 3(1):101069. (Clone-specific: Cytotoxicity, Flow cytometry, Functional assay). View Reference
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Dieckmann D, Plottner H, Berchtold S, Berger T, Schuler G. Ex vivo isolation and characterization of CD4(+)CD25(+) T cells with regulatory properties from human blood. J Exp Med. 2001; 193(11):1303-1310. (Clone-specific: Flow cytometry). View Reference
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Engleman EG, Warnke R, Fox RI, Dilley J, Benike CJ, Levy R. Studies of a human T lymphocyte antigen recognized by a monoclonal antibody.. Proc Natl Acad Sci USA. 1981; 78(3):1791-5. (Immunogen: Flow cytometry, Fluorescence activated cell sorting, Immunohistochemistry). View Reference
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Herodin F, Thullier P, Garin D, Drouet M. Nonhuman primates are relevant models for research in hematology, immunology and virology. Eur Cytokine Netw. 2005; 16(2):104-116. (Clone-specific: Flow cytometry). View Reference
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Kitani A, Chua K, Nakamura K, Strober W. Activated self-MHC-reactive T cells have the cytokine phenotype of Th3/T regulatory cell 1 T cells. J Immunol. 2000; 165(2):691-702. (Clone-specific: ELISA, Flow cytometry, Immunoprecipitation, Radioimmunoassay). View Reference
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Moran TP, Collier M, McKinnon KP, Davis NL, Johnston RE, Serody JS. A novel viral system for generating antigen-specific T cells. J Immunol. 2008; 175(5):3431-3438. (Clone-specific: Flow cytometry). View Reference
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Ren Z, Wang J, Zhu W, et al. Spontaneous transformation of adult mesenchymal stem cells from cynomolgus macaques in vitro.. Exp Cell Res. 2011; 317(20):2950-7. (Clone-specific: Flow cytometry). View Reference
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Sorg RV, Kogler G, Wernet P. Identification of cord blood dendritic cells as an immature CD11c- population. Blood. 1999; 93(7):2302-2307. (Clone-specific: Flow cytometry). View Reference
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Tomkinson BE, Wagner DK, Nelson DL, Sullivan JL. Activated lymphocytes during acute Epstein-Barr virus infection.. J Immunol. 1987; 139(11):3802-7. (Clone-specific: Flow cytometry). View Reference
568768 Rev. 3
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.