Flow cytometric analysis of mouse splenocytes, untreated (left column) or treated with 1X Cell Stimulation Cocktail (with protein transport inhibitors) (500X) (right column), using IFN-γ (XMG1.2) Rat mAb (FITC Conjugate) (top row) or concentration-matched Rat Isotype Control (FITC Conjugate) (bottom row), and co-stained with CD3 (17A2) Rat mAb (APC Conjugate) #24265.
|Source/Isotype||Rat IgG1 kappa|
This Cell Signaling Technology antibody is conjugated to FITC and tested in-house for direct flow cytometric analysis in mouse cells.
For optimal flow cytometry results, we recommend 0.125 μg of antibody per test.
Supplied in 10 mM NaH2PO4, 150 mM NaCl, 0.09% NaN3, 0.1% gelatin, pH 7.2. This product is stable for 6 months when stored at 4ºC. Do not aliquot the antibody. Protect from light. Do not freeze.
This antibody has been validated for Flow Cytometry using the FoxP3/Transcription Factor Fixation/Permeabilization Kit #43481. Please refer to the protocol provided with the kit for detailed instructions.
Protocol Id: 1804
IFN-γ (XMG1.2) Rat mAb (FITC Conjugate) recognizes endogenous levels of total IFN-γ protein. This antibody detects an epitope within the intracellular domain.
This monoclonal antibody was purified from tissue culture supernatant via affinity chromatography. The purified antibody was conjugated under optimal conditions, with unreacted dye removed from the preparation.
IFN-γ plays key roles in both the innate and adaptive immune response. IFN-γ activates the cytotoxic activity of innate immune cells, such as macrophages and NK cells (1,2). IFN-γ production by NK cells and antigen presenting cells (APCs) promotes cell-mediated adaptive immunity by inducing IFN-γ production by T lymphocytes, increasing class I and class II MHC expression, and enhancing peptide antigen presentation (1). The anti-viral activity of IFN-γ is due to its induction of PKR and other regulatory proteins. Binding of IFN-γ to the IFNGR1/IFNGR2 complex promotes dimerization of the receptor complexes to form the (IFNGR1/IFNGR2)2 -IFN-γ dimer. Binding induces a conformational change in receptor intracellular domains and signaling involves Jak1, Jak2, and Stat1 (3). The critical role of IFN-γ in amplification of immune surveillance and function is supported by increased susceptibility to pathogen infection by IFN-γ or IFNGR knockout mice and in humans with inactivating mutations in IFNGR1 or IFNGR2. IFN-γ also appears to have a role in atherosclerosis (4).
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