IFN gamma Monoclonal Antibody (H22), Functional Grade, eBioscience™, Invitrogen™

Description

• Description: This H22 monoclonal antibody reacts with and inhibits the activity of Mouse IFN gamma
• Mouse IFN gamma is a 20 kDa factor produced by activated T, B, and NK cells, and is an anti-viral and anti-parasitic cytokine
• IFN gamma, in synergy with other cytokines such as TNF alpha, inhibits proliferation of normal and transformed cells
• Immunomodulatory effects of IFN gamma are exerted on a wide range of cell types expressing the high affinity receptors for IFN gamma
• Applications Reported: This H22 monoclonal antibody inhibits the activity of Mouse IFN gamma and is reported to have a 14 day half-life when used in vivo
• Applications Tested: The ND50 of H22, as measured by the inhibition of protection against EMC virus in L929 cells, is less than or equal to 50 ng/mL in the presence of 1 ng/mL of Mouse IFN gamma Recombinant Protein
• Neutralization dose will vary depending on assay method, cytokine concentration, and cell type
• This antibody should be carefully titrated for optimal performance in the assay of interest
• Storage and handling: Use in a sterile environment
• Filtration: 0.2 μm post-manufacturing filtered
• Purity: Greater than 90%, as determined by SDS-PAGE
• Endotoxin Level: Less than 0.001 ng/μg antibody, as determined by LAL assay
• Aggregation: Less than 10%, as determined by HPLC
• IFN gamma (Interferon gamma, Type II interferon) is a macrophage activation factor, and immune interferon that is produced primarily by T-lymphocytes and natural killer cells in response to antigens, mitogens, Staphylococcus enterotoxin B, phytohemaglutanin and other cytokines
• IFN gamma is a dimeric protein consisting of two 146 amino acid subunits
• IFN gamma is a glycoprotein that exists, functionally, as a homodimer of approximately 45 kDa
• On SDS-PAGE, IFN gamma appears as a combination of 25, 20 and minor 15.5 kDa bands as a result of differential glycosylation
• The biological activity of the IFN gamma homodimer is highly species specific
• Human IFN gamma does not show cross-reactivity with mouse
• IFN gamma function includes the following: antiviral activity, tumor antiproliferative activity, induction of class I and II MHC, macrophage activation, and enhanced immunoglobulin secretion by B lymphocytes
• IFN gamma is involved in cytokine regulation and also acts synergistically with other cytokines
• Activation of IFN gamma takes place through binding of IFN gamma receptor I and II, and activating the JAK-STAT pathway
• IFN gamma does not show any homology with IFN alpha or IFN beta but human IFN gamma shows about 40% sequence homology with mouse IFN gamma
• IFN gamma is upregulated by IL2, FGF basic, EGF and downregulated by vitamin D3 or DMN
• IFN gamma gene mutations are associated with aplastic anemia.