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Interferon gamma (IFN-γ) is a cytokine critical to both innate and adaptive immunity, and functions as the primary activator of macrophages, in addition to stimulating natural killer cells and neutrophils. A non-IgE-mediated anaphylactic reaction and severe bronchospasm have been reported once after the first injection of interferon gamma. IFN-γ activates cells via a different receptor than IFN-α and IFN-β, which accounts for the different physiological properties of the proteins. Production of IFN-γ is largely restricted to activated CD4+ TH1 T cells, CD8+ T cells, and natural killer cells. One of the most important consequences of IFN-γ secretion is the activation of macrophages. In addition, IFN-γ plays a central role in inflammatory responses by activating endothelial cells, promoting TH1 cell development and cellular immune responses, and up-regulation of major histocompatability complex protein expression on antigen-presenting cells.
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参考图片
Standard curve
Example of human IFNγ standard curve in Assay Diluent #1.
Linearity
The concentrations of IFNγ were measured and interpolated from the target standard curves and corrected for sample dilution.
#1 sample is undiluted samples are as follows: human PBMC cells stimulated with 10ug/ml PHA for 5days (1%). The interpolated dilution factor corrected values are plotted. The mean target concentration was determined to be 31,555 pg/mL in stimulated human PBMC supernatant.
#2 sample is undiluted samples are as follows: human PBMC cells culture for 5days (50%). The interpolated dilution factor corrected values are plotted. The mean target concentration was determined to be 112 pg/mL in unstimulated human PBMC supernatant
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