Rat IL-18/IL-1F4 Antibody

(4 citations)
(1 Review)
  
  • Species Reactivity
    Rat
  • Specificity
    Detects rat IL‑18/IL-1F4 in direct ELISAs and Western blots. In Western blots, approximately 35% cross-reactivity with recombinant mouse IL‑18 is observed and approximately 10% cross-reactivity with recombinant human IL‑18 is observed.
  • Source
    Polyclonal Goat IgG
  • Purification
    Antigen Affinity-purified
  • Immunogen
    E. coli-derived recombinant rat IL‑18/IL-1F4
    His37-Ser194
    Accession # P97636
  • 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 Rat IL‑18/IL‑1F4 (Catalog # 521-RL)
  • Neutralization
    Measured by its ability to neutralize IL‑18/IL‑1F4-induced IFN‑ gamma secretion in activated mouse T cells [Ahn, H.J. et al. (1997) J. Immunol. 159:2125]. The Neutralization Dose (ND50) is typically 1-3 µg/mL in the presence of 15 ng/mL Recombinant Rat IL‑18/IL‑1F4 and 0.1 ng/mL Recombinant Mouse IL‑12.
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 Secretion Induced by IL‑18/IL‑1F4 and Neutralization by Rat IL‑18/IL‑1F4 Antibody. In the presence of Recombinant Mouse IL‑12 (0.1 ng/mL, Catalog # 419‑ML), Recombinant Rat IL‑18/IL‑1F4 (Catalog # 521‑RL) stimulates IFN‑ gamma secretion in activated mouse T cells in a dose-dependent manner (orange line), as measured by the Mouse IFN‑ gamma Quantikine ELISA Kit (Catalog # MIF00). Under these conditions, IFN‑ gamma secretion elicited by Recombinant Rat IL‑18/IL‑1F4 (15 ng/mL) is neutralized (green line) by increasing concentrations of Rat IL‑18/IL‑1F4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF521). 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: IL-18/IL-1F4
Interleukin-18 (IL-18), also known as IL-1F4 and IFN-gamma inducing factor (IGIF), is a member of the IL-1 family of cytokines and is a key molecule in the innate immune response (1). Rat IL-18 is synthesized as a 24 kDa proprotein that contains a 36 amino acid (aa) propeptide and a 158 aa mature region (2). Under inflammatory conditions, the propeptide is cleaved by Caspase-1 in the cytoplasm to liberate the mature nonglycosylated 18 kDa monomeric IL-18 (3, 4). Mature rat IL-18 shares 91% aa sequence identity with mouse IL-18 and 60-64% aa sequence identity with human, canine, feline, porcine, and rhesus macaque IL-18. IL-18 is secreted by a variety of cell types including macrophages, dendritic cells, and epithelial cells (1, 5). Circulating mature IL-18 is sequestered by soluble IL-18 binding proteins (IL-18 BP) that inhibit IL-18 bioactivity (6). IL-18 interacts with the widely expressed IL-18 R alpha which then recruits the signaling subunit IL-18 R beta (7, 8). The IL-1 family member IL-1F7 also binds to IL-18 R alpha but does not recruit IL-18 R beta or induce signaling (9). IL-1F7 binds IL-18 BP and enhances its neutralizing effect on IL-18 activity (9). IL-18 synergizes with other cytokines to activate NK, Th1, and Th17 cells and to increase the production of IFN-gamma (1, 5, 10-12). IL-18 can also promote Th2 cytokine release which reduces the effectiveness of antiviral responses (13, 14). Increased levels of active IL-18 contribute to the severity of autoimmunity and hypertension, while deficiency of IL-18 results in symptoms of metabolic syndrome (1, 5, 15, 16). In cancer, IL-18 stimulates Th1 and NK cells to target tumor cells, but it can also promote angiogenesis, metastasis, and tumor cell immune evasion (11).
  • References:
    1. Arend, W.P. et al. (2008) Immunol. Rev. 223:20.
    2. Culhane, A.C. et al. (1998) Mol. Psychiatry 3:362.
    3. Ghayur, T. et al. (1997) Nature 386:619.
    4. Gu, Y. et al. (1997) Science 275:206.
    5. Boraschi, D. and C.A. Dinarello (2006) Eur. Cytokine Netw. 17:224.
    6. Novick, D. et al. (1999) Immunity 10:127.
    7. Torigoe, K. et al. (1997) J. Biol. Chem. 272:25737.
    8. Born, T.L. et al. (1998) J. Biol. Chem. 273:29445.
    9. Bufler, P. et al. (2002) Proc. Natl. Acad. Sci. USA 99:13723.
    10. Takeda, K. et al. (1998) Immunity 8:383.
    11. Park, S. et al. (2007) Cell. Mol. Immunol. 4:329.
    12. Yoshimoto, T. et al. (1998) J. Immunol. 161:3400.
    13. Hoshino, T. et al. (2001) J. Immunol. 166:7014.
    14. Iannello, A. et al. (2009) AIDS Rev. 11:115.
    15. Rabkin, S.W. (2009) Nat. Clin. Pract. Cardiovasc. Med. 6:192.
    16. Netea, M.G. et al. (2006) Nat. Med. 12:650.
  • Long Name:
    Interleukin 18
  • Entrez Gene IDs:
    3606 (Human); 16173 (Mouse); 29197 (Rat); 397057 (Porcine); 574151 (Primate)
  • Alternate Names:
    Iboctadekin; IFN-gamma-inducing factor; IGIF; IGIFIL-1 gamma; IL18; IL-18; IL-18MGC12320; IL-1F4; IL1F4iboctadekin; IL-1g; Interferon gamma-inducing factor; interleukin 18 (interferon-gamma-inducing factor); Interleukin-1 gamma; interleukin-18
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.

4 Citations: Showing 1 - 4
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Species
Applications
Sample Type
  1. Interleukin-18-mediated microglia/astrocyte interaction in the spinal cord enhances neuropathic pain processing after nerve injury.
    Authors: Miyoshi K, Obata K, Kondo T, Okamura H, Noguchi K
    J. Neurosci., 2008;28(48):12775-87.
    Species: Rat
    Sample Type: In Vivo
    Application: In vivo
  2. Inhibition of angiogenesis by interleukin-4 gene therapy in rat adjuvant-induced arthritis.
    Authors: Haas CS, Amin MA, Allen BB, Ruth JH, Haines GK, Woods JM, Koch AE
    Arthritis Rheum., 2006;54(8):2402-14.
    Species: Rat
    Sample Type: Tissue Homogenates
    Application: Neut
  3. Caspase-1-processed interleukins in hyperoxia-induced cell death in the developing brain.
    Authors: Felderhoff-Mueser U, Sifringer M, Polley O, Dzietko M, Leineweber B, Mahler L, Baier M, Bittigau P, Obladen M, Ikonomidou C, Buhrer C
    Ann. Neurol., 2005;57(1):50-9.
    Species: Rat
    Sample Type: Tissue Homogenates
    Application: WB
  4. Role of IL-18 in acute lung inflammation.
    Authors: Jordan JA, Guo RF, Yun EC, Sarma V, Warner RL, Crouch LD, Senaldi G, Ulich TR, Ward PA
    J. Immunol., 2001;167(12):7060-8.
    Species: Rat
    Sample Type: BALF
    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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Average Rating: 4 (Based on 1 review)

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We have 1 review tested in 1 application: Immunocytochemistry/Immunofluorescence.
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Summary

ApplicationImmunocytochemistry/Immunofluorescence
Sample TestedRat,spinal cord dorsal horn, particle nerve injury (CCI)

Other Experimental Details

Other Experimental DetailsFixed with 4%Polyoxymethylene and 15%saturation picric acid. Without antigen retrieval.
Frozen section, 20m, floating slice method.
First antibody 4 degrees over night and secondary antibody 2 hours at room-temperature.
Antigen retrieval in 99 degrees citrate buffer(pH 4.6) for 5min would benefit the output (not tested).
Green: Interleukin-18; red: Iba-1 (microglia marker).
Specificity: Reasonably specific
Sensitivity: Reasonably sensitive
Buffer: PBS
Dilution: 1/100

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