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Phosphate-buffered solution, pH 7.2, containing no preservative. 0.2 μm filter sterilized. Endotoxin level is < 0.1 EU/μg of the protein (< 0.01 ng/μg of the protein) as determined by the LAL test.
Preparation:
The LEAF™ (Low Endotoxin, Azide-Free) antibody was Purified by affinity chromatography.
Concentration:
1.0 mg/ml
Storage & Handling:
The antibody solution should be stored undiluted at 4°C. This LEAF™ solution contains no preservative; handle under aseptic conditions.
Each lot of this antibody is quality control tested by ELISA assay. For ELISPOT capture applications, a concentration range of 0.5-2 µg/ml is recommended. For ELISA capture applications, a concentration range of 1-4 µg/ml is recommended. To obtain a linear standard curve, serial dilutions of IFN-γ recombinant protein ranging from 1000 to 8 pg/ml are recommended for each ELISA plate. It is recommended that the reagent be titrated for optimal performance for each application.
COA:
Application Notes:
ELISA1,2,5 and ELISPOT3,4 Capture: The Purified MD-1 antibody is useful as the capture antibody in a sandwich ELISA or ELISPOT assay, when used in conjunction with the biotinylated 4S.B3 (Cat. No. 502504/502514) antibody as the detecting antibody and recombinant human IFN-γ (Cat. No. 562101) as the standard. The LEAF™ Purified antibody is suggested for ELISPOT capture. Neutralization1: The LEAF™ Purified antibody (Endotoxin <0.1 EU/μg, Azide-Free, 0.2 μm sterile-filtered) is recommended for neutralization of human IFN-γ bioactivity (Cat. No. 507513). Additional reported applications (for the relevant formats) include: Western blotting1,2, intracellular staining for flow cytometry6, and immunohistochemical staining7 of paraformaldehyde-fixed, saponin-treated frozen tissue sections. Note: For testing human IFN-γ in serum or plasma, BioLegend's ELISA Max™ Sets (Cat. No. 430101 to 430106) are specially developed and recommended.
Application References:
1. Van der Meide P, et al. 1985. J. Immuno. Meth. 79:293. 2. Yazdanbakhsh M, et al. 1993. Eur. J. Immuno. 23:3312. 3. Besouw N, et al. 1994. J. Med. Primatol. 23:42. 4. Van der Meide P, et al. 1995. J. Med. Primatol. 24:271. 5. Hilkens C, et al. 1996. J. Immunol. 156:1722. 6. Hamann D, et al. 1996. J. Immunol. 156:1387. 7. Wassenaar A, et al. 1995. Infect. Immunity. 63:2147.
Interferon-γ is a potent multifunctional cytokine which is secreted primarily by activated NK cells and T cells. Originally characterized based on anti-viral activities, IFN-γ also exerts anti-proliferative, immunoregulatory, and proinflammatory activities. IFN-γ can upregulate MHC class I and II antigen expression by antigen-presenting cells. The 4S.B3 antibody reacts with the human IFN-γ. The MD-1 antibody reacts with human and monkey interferon-gamma (IFN-γ). The MD-1 antibody can neutralize the bioactivity of natural or recombinant IFN-γ.
Other Names:
Interferon-γ, Immune interferon, Type II interferon, T cell interferon, Macrophage-activating factor (MAF), IFN-g, IFN-gamma
Structure:
Cytokine; dimer; 20-25 kD (Mammalian)
Regulation:
Upregulated by IL-2, FGF-basic, EGF; downregulated by vitamin D3 or DMN; labile at pH2
Cellular Sources:
CD8+ and CD4+ T cells, NK cells
Cellular Targets:
T cells, B cells, macrophages, NK cells, endothelial cells, fibroblasts
Receptors:
IFN-γRα (CDw119) dimerized with IFN-γRβ (AF-1)
Bioactivity/Activities:
Antiviral/antiparasitic activities; inhibits proliferation; enhances MHC class I and II expression on APC
Antigen References:
1. Fitzgerald K, et al. Eds. 2001. The Cytokine FactsBook. Academic Press San Diego. 2. De Maeyer E, et al. 1992. Curr. Opin. Immunol. 4:321. 3. Farrar M, et al. 1993. Annu. Rev. Immunol. 11:571. 4. Gray P, et al. 1987. Lymphokines 13:151.
*These products may be covered by one or more Limited Use Label Licenses (see the BioLegend Catalog or our website, www.biolegend.com/terms). BioLegend products may not be transferred to third parties, resold, modified for resale, or used to manufacture commercial products or to provide a service to third parties without written approval of BioLegend. By use of these products you accept the terms and conditions of all applicable Limited Use Label Licenses. Unless otherwise indicated, these products are for research use only and are not intended for human or animal diagnostic, therapeutic or commercial use.
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