Feline IFN-gamma Antibody

(1 citations)   
  • Species Reactivity
    Feline
  • Specificity
    Detects feline IFN-gamma in direct ELISAs and Western blots. In direct ELISAs, less than 1% cross-reactivity with human, mouse, rat, and porcine IFN-gamma is observed.
  • Source
    Polyclonal Goat IgG
  • Purification
    Antigen Affinity-purified
  • Immunogen
    E. coli-derived recombinant feline IFN-gamma
    Gln24-Lys167
    Accession # P46402
  • Formulation
    Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
  • Endotoxin Level
    <0.10 EU per 1 μg of the antibody by the LAL method.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • Western Blot
    0.1 µg/mL
    Recombinant Feline IFN-gamma (Catalog # 764-FG)
  • Neutralization
    Measured by its ability to neutralize IFN‑ gamma inhibition of VSV-induced cytopathy in the CRFK feline kidney epithelial cell line. The Neutralization Dose (ND50) is typically 1-3 µg/mL in the presence of 5 ng/mL Recombinant Feline IFN‑ gamma.
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.
Data Examples
IFN‑ gamma  Inhibition of VSV-induced Cytopathy and Neutralization by Feline IFN‑ gamma Antibody.

Recombinant Feline IFN‑ gamma (Catalog # 764-FG) reduces the Vesticular Stomatitis Virus (VSV)-induced cytopathy in the CRFK feline kidney epithelial cell line in a dose-dependent manner (orange line). Inhibition of VSV activity elicited by Recombinant Feline IFN‑ gamma (5 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Feline IFN‑ gamma Antigen Affinity-purified Polyclonal Antibody (Catalog # AF764). The ND50 is typically 1-3 µg/mL.

Preparation and Storage
  • Reconstitution
    Reconstitute at 0.2 mg/mL in sterile PBS.
  • 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 ), also known as type II or immune interferon, exerts a wide range of immunoregulatory activities and is considered to be the prototype proinflammatory cytokine (1, 2). Mature feline IFN-gamma exists as a noncovalently linked homodimer of 20  25 kDa variably glycosylated subunits (3, 4). It shares 88% amino acid sequence identity with canine IFN-gamma, 72%‑78% with bovine, equine, and porcine IFN‑ gamma, and 40%‑62% with cotton rat, human, mouse, rat, and rhesus 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 (5, 6). IFN-gamma is produced by a variety of immune cells under inflammatory conditions, notably by T cells and NK cells (7). It plays a key role in host defense by promoting the development and activation of Th1 cells, chemoattraction and activation of monocytes and macrophages, upregulation of antigen presentation molecules, and immunoglobulin class switching in B cells. It also exhibits antiviral, antiproliferative, and apoptotic effects (7, 8). In addition, IFN-gamma functions as an anti-inflammatory mediator by promoting the development of regulatory T cells and inhibiting Th17 cell differentiation (9, 10). The pleiotropic effects of IFN-gamma contribute to the development of multiple aspects of atherosclerosis (8).
  • References:
    1. Billiau, A. and P. Matthys (2009) Cytokine Growth Factor Rev. 20:97.
    2. Pestka, S. et al. (2004) Immunol. Rev. 202:8.
    3. Argyle, D.J. et al. (1995) DNA Seq. 5:169.
    4. Schijns, V.E. et al. (1995) Immunogenetics 42:440.
    5. Marsters, S.A. et al. (1995) Proc. Natl. Acad. Sci. 92:5401.
    6. Krause, C.D. et al. (2000) J. Biol. Chem. 275:22995.
    7. Schroder, K. et al. (2004) J. Leukoc. Biol. 75:163.
    8. McLaren, J.E. and D.P. Ramji (2009) Cytokine Growth Factor Rev. 20:125.
    9. Muhl, H. and J. Pfeilschifter (2003) Int. Immunopharmacol. 3:1247.
    10. Kelchtermans, H. et al. (2008) Trends Immunol. 29:479.
  • 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
Related Research Areas
Citations:

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

1 Citations: Showing 1 - 1

  1. A targeted mutation within the feline leukemia virus (FeLV) envelope protein immunosuppressive domain to improve a canarypox virus-vectored FeLV vaccine.
    Authors: Schlecht-Louf G, Mangeney M, El-Garch H, Lacombe V, Poulet H, Heidmann T
    J Virol, 2014;88(2):992-1001.
    Species: Feline
    Sample Type: Cell Culture Supernates
    Application: ELISA Development
Isotype Controls
Description Application Cat# Citations Images  

Normal Goat IgG Control

Ctrl AB-108-C 191  
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Secondary Antibodies
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Goat IgG HRP-conjugated Antibody

WB, Simple Western HAF109 19  
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Goat IgG HRP-conjugated Antibody

WB HAF017 15  
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Goat IgG (H+L) PE-conjugated Antibody

Flow F0107 4  
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Donkey Anti-Goat IgG NorthernLights™ NL557-conjugated Antibody

Flow, IHC, ICC NL001 9
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Donkey Anti-Goat IgG NorthernLights™ NL493-conjugated Antibody

Flow, IHC, ICC NL003 5
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Goat IgG (H+L) APC-conjugated Antibody

Flow F0108 6  
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Goat IgG Horseradish Peroxidase-conjugated Antibody

WB HAF019 6  
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Donkey Anti-Goat IgG Antibody

WB AF109 6
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Donkey Anti-Goat IgG Biotinylated Antibody

WB BAF109 3
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Goat IgG VisUCyte HRP Polymer

IHC VC004  
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Goat IgG (H+L) Fluorescein-conjugated Antibody

Flow F0109 2  
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Donkey Anti-Goat IgG NorthernLights™ NL637-conjugated Antibody

Flow, IHC, ICC NL002
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Rabbit Anti-Goat IgG (H+L) Affinity Purified PAb, X Absorbed

WB, ELISA R-401-C-ABS
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Chicken Anti-Goat IgG Biotinylated Antibody

WB BAF019
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Rabbit Anti-Goat IgG Biotinylated Antibody

WB BAF017
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Donkey Anti-Goat IgG (H+L) PerCP-conjugated Antibody

Flow F0124
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