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  5. Invitrogen™ Human IL-18BP ELISA Kit

Invitrogen™ Human IL-18BP ELISA Kit

Catalog No. EHIL18BP
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Catalog No. Quantity
EHIL18BP 96 Tests
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Description

ELISA

The Human Interleukin 18 Binding Protein (Hu IL-18BP) ELISA quantitates Hu IL-18BP in human serum, plasma, or cell culture medium. The assay will exclusively recognize both natural and recombinant Hu IL-18BP. Principle of the method The Human IL-18BP solid-phase sandwich ELISA (enzyme-linked immunosorbent assay) is designed to measure the amount of the target bound between a matched antibody pair. A target-specific antibody has been pre-coated in the wells of the supplied microplate. Samples, standards, or controls are then added into these wells and bind to the immobilized (capture) antibody. The sandwich is formed by the addition of the second (detector) antibody, a substrate solution is added that reacts with the enzyme-antibody-target complex to produce measurable signal. The intensity of this signal is directly proportional to the concentration of target present in the original specimen. Rigorous validation Each manufactured lot of this ELISA kit is quality tested for criteria such as sensitivity, specificity, precision, and lot-to-lot consistency. See manual for more information on validation.

Interleukin-18 binding protein (IL-18BP) is a constitutively secreted glycoprotein that acts as a natural antagonist for interleukin-18 (IL-18) by preventing interaction between IL-18 and its receptors. Through this binding, IL-18BP neutralizes the proinflammatory role of IL-18 in cell-mediated immune responses, resulting in reduced IFN-gamma production by T helper type I cells and inhibition of allospecific cytotoxic T lymphocyte (CTL) activity through augmented natural killer (NK) cell cytotoxicity. As an inhibitor of IL-18 and an essential component of skin homeostasis, IL-18BP has been linked to a variety of diseases, including eczema, asthma, and the autoimmune condition, Crohn's disease. The upregulation of IL-18BP by keratinocytes expressing the human papillomavirus (HPV) E7 oncoprotein has been shown to decrease IL-18-induced IFN-gamma production and IL-18-mediated T cell activation. Elevated levels of IL-18 and IL-18BP, as well as proinflammatory cytokines IFN-gamma, TNF-alpha, IL-1beta and IL-8, have been linked to chronic inflammation and observed in macrophages (including Kupffer cells) isolated from lesions and intestinal tissues of Crohn's disease patients. As a member of the immunoglobulin-like class of receptors, IL-18BP contains a single immunoglobulin (Ig) domain; although two (b and d) of the four identified human isoforms (a-d) contain incomplete domains that greatly reduce their binding affinity.

Specifications

Accession Number O95998
Assay Range 24.69 to 18,000 pg/mL
Assay Sensitivity 20 pg/mL
Calibration Range 20 pg/mL to 18000 pg/mL
Assay Solid-phase sandwich ELISA
Conjugate HRP
Product Type ELISA
Protein Family Other Proteins
Sample Type Plasma, Serum, Supernatant
Specificity This ELISA kit shows no cross-reactivity with any of the cytokines tested: Human Angiogenin, BDNF, BLC, ENA-78, FGF-4, IL-1 alpha, IL-1 beta, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-11, IL-12 p70, IL-12 p40, IL-13, IL-15, IL-309, IP-10, G-CSF, GM-CSF, IFN-gamma, Leptin (OB), MCP-1, MCP-2, MCP-3, MDC, MIP-1 alpha, MIP-1 beta, MIP-1 delta, PARC, PDGF, RANTES, SCF, TARC, TGF-beta, TIMP-1, TIMP-2, TNF-alpha, TNF-beta, TPO, VEGF.
Sufficient For 96 Assays
Target Species Human
For Use With (Application) ELISA, Protein Assays, Protein Biology, Cancer Biology, Immunology, Neuroscience, Neurobiology, Protein Detection, Protein Analysis
For Use With (Equipment) Colorimetric Microplate Reader
Gene ID (Entrez) 10068
Gene Symbol IL18BP
Interassay CV <12%
Intraassay CV <10
Kit Contents Pre-coated 96 well plate, Standard, Assay Diluent concentrate, Biotinylated Detection Antibody, SAV-HRP, Wash Buffer, Chromogen, Stop Solution, Adhesive Plate Covers
Label or Dye HRP
Quantity 96 Tests
Regulatory Status RUO
Research Discipline Signal Transduction
Sample Volume Plasma 33 μL, Serum 33 μL, Supernatant 100 μL
Storage Requirements 2°C to 8°C
Synonym IL18BPa
Target IL18BP
Test Time 1 hrs 20 mins
Total Assay Time 4 hrs 45 mins
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