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Two-color flow cytometric analysis of Granzyme A expression in C57BL/6 mouse splenocytes. Mouse spleen cells were treated with BD Pharm Lyse™ Lysing Buffer (Cat. No. 555899) to lyse erythrocytes, washed, and preincubated with Purified Rat Anti-Mouse CD16/CD32 antibody (Mouse BD Fc Block™) (Cat. No. 553141/553142). The cells were then stained with APC Mouse Anti-Mouse NK1.1 (Cat. No. 550627/561117) before being fixed using BD Cytofix™ Fixation Buffer (Cat. No. 554655) followed by permeabilization with BD Perm/Wash™ Buffer (Cat. No. 554723). The cells were stained with either PE Mouse IgG2a, κ Isotype Control (Cat. No. 555058; Left Plot) or PE Mouse Anti-Mouse Granzyme A (Cat. No. 567849; Right Plot) at 0.25 μg/test. The pseudocolor density plot showing the correlated expression of Granzyme A (or Ig Isotype control staining) versus NK1.1 were derived from gated events with the forward and side light-scatter characteristics of intact splenic leucocytes. Flow cytometry and data analysis were performed using a BD LSRFortessa™ Cell Analyzer System and FlowJo™ software. Data shown on this Technical Data Sheet are not lot specific.
Two-color flow cytometric analysis of Granzyme A expression in BALB/c mouse splenocytes. Mouse spleen cells were cultured (3 days) with plate-bound Purified NA/LE Hamster Anti-Mouse CD3e (Cat. No. 553057) and soluble NA/LE Hamster Anti-Mouse CD28 (Cat. No. 553294/ 567110) antibodies. The activated cells were preincubated with Purified Rat Anti-Mouse CD16/CD32 antibody (Mouse BD Fc Block™) (Cat. No. 553141/553142) and stained with APC Mouse Anti-Mouse CD8a antibody (Cat. No. 553035/561093) before being fixed using BD Cytofix™ Fixation Buffer (Cat. No. 554655) followed by permeabilization with BD Perm/Wash™ Buffer (Cat. No. 554723). The cells were stained with either PE Mouse IgG2a, κ Isotype Control (Cat. No. 555058; Left Plot) or PE Mouse Anti-Mouse Granzyme A (Cat. No. 567849; Right Plot) at 0.25 μg/test. The pseudocolor density plots showing the correlated expression of Granzyme A (or Ig Isotype control staining) versus CD8a were derived from gated events with the forward and side light-scatter characteristics of intact activated splenocytes. Flow cytometry and data analysis were performed using a BD FACSCelesta™ Cell Analyzer System and FlowJo™ software. Data shown on this Technical Data Sheet are not lot specific.
BD Pharmingen™ PE Mouse Anti-Mouse Granzyme A
BD Pharmingen™ PE Mouse Anti-Mouse Granzyme A
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
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.
- 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.
- Please refer to http://regdocs.bd.com to access safety data sheets (SDS).
- Since applications vary, each investigator should titrate the reagent to obtain optimal results.
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Companion Products
The 3G8.5 monoclonal antibody specifically recognizes Granzyme A which is also known as T cell-specific serine protease 1 (TSP-1), Cytotoxic T-lymphocyte-associated serine esterase-3 (CTLA-3), or Fragmentin-1. Granzyme A is a serine protease that cleaves various peptide substrates after lysine or arginine residues and is encoded by Gzma (granzyme A). This effector protease presents as a homodimer that is stored in the cytosolic granules of cytotoxic T cells and NK cells. Granzyme A plays an important role in inflammatory and cell-mediated cytotoxic responses against malignant target cells and cells infected with viruses or bacteria. It is released from effector cells by granule exocytosis and enters target cells at immunological synapses. Therein, Granzyme A activates caspase-independent target cell death that is mainly characterized by the generation of single-stranded DNA nicks, loss of mitochondrial transmembrane potential, and loss of cell membrane integrity.
Development References (7)
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Bots M, Medema JP. Granzymes at a glance.. J Cell Sci. 2006; 119(Pt 24):5011-4. (Biology). View Reference
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Cao X, Cai SF, Fehniger TA, et al. Granzyme B and perforin are important for regulatory T cell-mediated suppression of tumor clearance.. Immunity. 2007; 27(4):635-46. (Immunogen: Flow cytometry). View Reference
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Fehniger TA, Cai SF, Cao X, et al. Acquisition of murine NK cell cytotoxicity requires the translation of a pre-existing pool of granzyme B and perforin mRNAs.. Immunity. 2007; 26(6):798-811. (Clone-specific: Flow cytometry). View Reference
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Gotthardt D, Prchal-Murphy M, Seillet C, et al. NK cell development in bone marrow and liver: site matters.. Genes Immun. 2014; 15(8):584-7. (Clone-specific: Flow cytometry). View Reference
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Grossman WJ, Verbsky JW, Tollefsen BL, Kemper C, Atkinson JP, Ley TJ. Differential expression of granzymes A and B in human cytotoxic lymphocyte subsets and T regulatory cells.. Blood. 2004; 104(9):2840-8. (Biology). View Reference
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Martinvalet D, Dykxhoorn DM, Ferrini R, Lieberman J. Granzyme A cleaves a mitochondrial complex I protein to initiate caspase-independent cell death.. Cell. 2008; 133(4):681-92. (Biology). View Reference
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Moffat JM, Gebhardt T, Doherty PC, Turner SJ, Mintern JD. Granzyme A expression reveals distinct cytolytic CTL subsets following influenza A virus infection.. Eur J Immunol. 2009; 39(5):1203-10. (Clone-specific: Flow cytometry). View Reference
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For Research Use Only. Not for use in diagnostic or therapeutic procedures.
Refer to manufacturer's instructions for use and related User Manuals and Technical Data Sheets before using this product 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.