Interferon Gamma + Granzyme B Human Fluorospot Kit (Reagents for 20 x 96 tests, without plates) (ab48766)

Overview

  • Product nameInterferon Gamma + Granzyme B Human Fluorospot Kit (Reagents for 20 x 96 tests, without plates)
    See all Interferon Gamma + Granzyme B kits
  • Tests
    20 x 96 well plate
  • Sample type
    Cell culture supernatant, Cell culture extracts
  • Assay typeSandwich (qualitative)
  • Assay durationMultiple steps standard assay
  • Species reactivity
    Reacts with: Human
  • Product overview

    The ELISPOT assay is designed to enumerate cytokine producing cells in a single cell suspension. This method has the advantage of requiring a minimum of in-vitro manipulations allowing cytokine production analysis as close as possible to in-vivo conditions in a highly specific way. This technique is designed to determine the frequency of cytokine producing cells under a given stimulation, and the follow-up of such frequency during a treatment and/or a pathological state. Elispot assay constitutes an ideal tool in the TH1 / TH2 response, vaccine development, viral infection monitoring and treatment, cancerology, infectious diseases, autoimmune diseases and transplantation.

    The Elispot assay is based on sandwich immuno-enzyme technology. Cell secreted cytokines or soluble molecules are captured by coated antibodies avoiding diffusion in supernatant, protease degradation or binding on soluble membrane receptors. After cell removal, the captured cytokines are revealed by tracer antibodies and appropriate conjugates.


    Principle

    After cell stimulation, locally produced cytokines are captured by IFN gamma and Granzyme B specific monoclonal antibodies. After cell lysis, trapped cytokine molecules are revealed by a secondary anti- IFN gamma FITC conjugated antibody and a biotinylated anti-Granzyme B antibody. Those are in turn recognised by anti-FITC green fluorescent dye and streptavidin-phycoerythrin conjugates. PVDF-bottomed-well plates are then read under a UV light beam. Green fluorescent spots indicate IFN gamma production while Granzyme B is revealed by red spots. Yellow spots will indicate dual cytokine producing cells.

  • Tested applicationsFluorospotmore details
  • PlatformReagents

Properties

  • RelevanceInterferon Gamma is produced by lymphocytes activated by specific antigens or mitogens. IFN-gamma, in addition to having antiviral activity, has important immunoregulatory functions. It is a potent activator of macrophages, it has antiproliferative effects on transformed cells and it can potentiate the antiviral and antitumor effects of the type I interferons. Granzyme B is necessary for target cell lysis in cell-mediated immune responses. It cleaves after Asp. Seems to be linked to an activation cascade of caspases (aspartate-specific cysteine proteases) responsible for apoptosis execution. Cleaves caspase-3, -7, -9 and 10 to give rise to active enzymes mediating apoptosis.
  • Alternative names
    • CSPB
    • Cytotoxic T lymphocyte proteinase 2
    • Granzyme 2
    • Granzyme B
    • GZMB
    • HLP
    • IFI
    • IFN gamma
    • IFNG
    • Immune interferon
    see all
  • Database links

Applications

Our Abpromise guarantee covers the use of ab48766 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
Fluorospot Use at an assay dependent dilution.

References for Interferon Gamma + Granzyme B Human Fluorospot Kit (Reagents for 20 x 96 tests, without plates) (ab48766)

ab48766 has not yet been referenced specifically in any publications.

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Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"