Biolegend, 506533, Ultra-LEAF™ Purified anti-human IFN-γ Antibody, 5mg

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 B27 antibody reacts with the human interferon-γ. The B27 antibody can neutralize the bioactivity of natural or recombinant IFN-γ.
5mg
Verified Reactivity: Human
Reported Reactivity: Chimpanzee, Baboon, Cynomolgus, Rhesus, African Green, Pigtailed Macaque, Sooty Mangabey
Antibody Type: Monoclonal
Host Species: Mouse
Immunogen: E. coli-expressed recombinant human IFN-γ
Formulation: 0.2 µm filtered in phosphate-buffered solution, pH 7.2, containing no preservative.
Endotoxin Level: Less than 0.01 EU/µg of the protein (< 0.001 ng/µg of the protein) as determined by the LAL test.
Preparation: The Ultra-LEAF™ (Low Endotoxin, Azide-Free) antibody was purified by affinity chromatography.
Concentration: The antibody is bottled at the concentration indicated on the vial, typically between 2 mg/mL and 3 mg/mL. Older lots may have also been bottled at 1 mg/mL. To obtain lot-specific concentration and expiration, please enter the lot number in our Certificate of Analysis online tool.
Storage & Handling: The antibody solution should be stored undiluted between 2°C and 8°C. This Ultra-LEAF™ solution contains no preservative; handle under aseptic conditions.
Application: ICFC - Quality tested FC, Neut - Reported in the literature, not verified in house
Recommended Usage: Each lot of this antibody is quality control tested by intracellular immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is ≤ 0.25 µg per million cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for each application.
Application Notes: Flow Cytometry2: The fluorochrome-labeled B27 antibody is useful for intracellular immunofluorescent staining and flow cytometric analysis to identify IFN-? -producing cells within mixed cell populations. For intracellular cytokine staining protocol, please visit www.biolegend.com and click on the support section.Neutralization1,3,6,7: The Ultra-LEAF™ Purified antibody (Endotoxin <0.01 EU/µg, Azide-Free, 0.2 µm filtered) is recommended for neutralization of human IFN-? bioactivity (Cat. No. 506531).
Application References(PubMed link indicates BioLegend citation): Favre C, et al. 1989. Molec. Immunol. 26:17. (Neut) Kaur A, et al. 2002. J Virol. 76:3646. Abrams J, et al. 1992. Immunol. Rev. 127:5. (Neut) Andersson U, et al. 1999. Detection and quantification of gene expression. New York:Springer-Verlag. Rout N, et al. 2010. PLoS One 5:e9787. (FC) Acosta-Rodriguez EV, et al. 2007. Nat. Immunol. 9:942-9. (Neut) Gangur V, et al. 1998. FASEB J. 12:705-13. (Neut)
Product Citations: Asashima H, et al. 2023. Cell Rep. 42:111895. PubMed Gruber CN, et al. 2020. Cell. 183:982. PubMed Bhojnagarwala PS, et al. 2022. Mol Ther Oncolytics. 26:289. PubMed OConnor RA, et al. 2021. OncoImmunology. 10(1):1940675. PubMed Jiang J, et al. 2021. Front Immunol. 12:785549. PubMed
RRID: AB_2801091 (BioLegend Cat. No. 506531) AB_2801092 (BioLegend Cat. No. 506532) AB_2801093 (BioLegend Cat. No. 506533) AB_2801094 (BioLegend Cat. No. 506534) AB_2801095 (BioLegend Cat. No. 506535) AB_2801096 (BioLegend Cat. No. 506536)
Structure: Cytokine; dimer; 20-25 kD (Mammalian)
Bioactivity: Antiviral/antiparasitic activities; inhibits proliferation; enhances MHC class I and II expression on APC
Cell Sources: CD8+ and CD4+ T cells, NK cells
Cell Targets: T cells, B cells, macrophages, NK cells, endothelial cells, fibroblasts
Receptors: IFN-γRα (CDw119) dimerized with IFN-γRβ (AF-1)
Cell Type: Tregs
Biology Area: Cell Biology, Immunology, Neuroinflammation, Neuroscience
Molecular Family: Cytokines/Chemokines
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.
Regulation: Upregulated by IL-2, FGF-basic, EGF; downregulated by vitamin D3 or DMN; labile at pH2
Gene ID: 3458
UniProt: View information about IFN-gamma on UniProt.org
Clone: B27
Regulatory Status: RUO
Other Names: Interferon-γ, Immune interferon, Type II interferon, T cell interferon, Macrophage-activating factor (MAF), IFN-g, IFN-gamma
Isotype: Mouse IgG1, κ
Q: Do you guarantee that your antibodies are totally pathogen free?
A: BioLegend does not test for pathogens in-house aside from the GoInVivo™ product line. However, upon request, this can be tested on a custom basis with an outside, independent laboratory.
Q: Does BioLegend test each Ultra-LEAF™ antibody by functional assay?
A: No, BioLegend does not test Ultra-LEAF™ antibodies by functional assays unless otherwise indicated. Due to the possible complexities and variations of uses of biofunctional antibodies in different assays and because of the large product portfolio, BioLegend does not currently perform functional assays as a routine QC for the antibodies. However, we do provide references in which the antibodies were used for functional assays and we do perform QC to verify the specificity and quality of the antibody based on our strict specification criteria.
Q: Does BioLegend test each Ultra-LEAF™ antibody for potential pathogens?
A: No, BioLegend does not test for pathogens in-house unless otherwise indicated.  However, we can recommend an outside vendor to perform this testing as needed.
Q: Have you tested this Ultra-LEAF™ antibody for in vivo or in vitro applications?
A: We don't test our antibodies for in vivo or in vitro applications unless otherwise indicated. Depending on the product, the TDS may describe literature supporting usage of a particular product for bioassay. It may be best to further consult the literature to find clone specific information.