Human IFN-gamma F(ab')2 Antibody

Catalog #: MAB285R-FAB2 Datasheet / COA / SDS
Recombinant Monoclonal Antibody
Catalog # Availability Size / Price Qty
MAB285R-FAB2-100
MAB285R-FAB2-SP
Detection of IFN‑ gamma in Human PBMCs by Flow Cytometry.
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Human IFN-gamma F(ab')2 Antibody Summary

Species Reactivity
Human
Specificity
Detects human IFN-gamma in direct ELISAs.
Source
Recombinant Monoclonal Mouse IgG2B Clone # 25723R-FAB2
Purification
Protein A or G purified from cell culture supernatant
Immunogen
E. coli-derived recombinant human IFN-gamma
Gln24-Gln166
Accession # AAP20098.1
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Label
Unconjugated

Applications

Recommended Concentration
Sample
Intracellular Staining by Flow Cytometry
0.25 µg/mL
Human peripheral blood mononuclear cells (PBMCs) treated with 50 ng/mL PMA, 1 ug/mL Ionomycin, and 3 uM Monensin overnight

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Intracellular Staining by Flow Cytometry View Larger

Detection of IFN‑ gamma in Human PBMCs by Flow Cytometry. Human peripheral blood mononuclear cells (PBMCs) treated with (A) 50 ng/mL PMA, 1 ug/mL Ionomycin, and 3 uM Monensin overnight or (B) untreated, were stained with Mouse Anti-Human IFN- gamma Monoclonal Antibody (Catalog # MAB285R-FAB2) followed by anti-Mouse IgG PE-conjugated secondary antibody (F0102B) and Mouse Anti-Human CD3 epsilon APC-conjugated Monoclonal Antibody (FAB100A). Quadrant markers were set based on Mouse IgG2A Isotype Control (MAB003). To facilitate intracellular staining, cells were fixed and permeabilized with FlowX FoxP3 Fixation & Permeabilization Buffer Kit (FC012). Staining was performed using our Staining Intracellular Molecules protocol.

Reconstitution Calculator

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Preparation and Storage

Reconstitution
Reconstitute at 0.5 mg/mL in sterile PBS.
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Shipping
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: IFN-gamma

Interferon-gamma (IFN-gamma, IFNG), also known as type II or Immune Interferon, exerts a wide range of immunoregulatory activities and is considered to be the prototype proinflammatory cytokine. Mature human IFN-gamma exists as a non-covalently linked homodimer of 20-25 kDa molecular weight variably glycosylated subunits. Glycosylation of IFN-gamma at sites Asn25 and Asn97 is critical for protease resistance. It shares 90% amino acid (aa) sequence identity with rhesus IFN-gamma, 59-64% with bovine, canine, equine, feline, and porcine IFN‑ gamma, and 37-43% with cotton rat, mouse, and rat IFN-gamma. IFN-gamma dimers bind to IFN-gamma RI (alpha subunits) which then interact with IFN-gamma RII (beta subunits) to form the functional receptor complex of two alpha and two beta subunits. Inclusion of IFN-gamma RII increases the binding affinity for ligand and the efficiency of signal transduction. IFN-gamma is produced by a variety of immune cells under inflammatory conditions, notably by T cells and NK cells. It plays a key function in host defense by promoting the development and activation of Th1 cells, chemoattraction and activation of monocytes and macrophages, up‑regulation of antigen presentation molecules, and immunoglobulin class switching in B cells. It also exhibits antiviral, antiproliferative, and apoptotic effects. In addition, IFN-gamma functions as an anti-inflammatory mediator by promoting the development of regulatory T cells and inhibiting Th17 cell differentiation. The pleiotropic effects of IFN-gamma contribute to the development of multiple aspects of atherosclerosis.

Long Name
Interferon gamma
Entrez Gene IDs
3458 (Human); 15978 (Mouse); 25712 (Rat); 396991 (Porcine); 281237 (Bovine); 403801 (Canine); 493965 (Feline)
Alternate Names
IFG; IFI; IFNG; IFNgamma; IFN-gamma; Immune interferon; interferon gamma; interferon, gamma

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