Human TNF-alpha QuantiGlo ELISA Kit

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Summary
Reactivity HuSpecies Glossary
Applications ELISA
Conjugate
HRP
Datasheet
Reviews & Publications
Protocols & FAQs
Support & Research

Human TNF-alpha QuantiGlo ELISA Kit Summary

Background
The QuantiGlo Human TNF-alpha Immunoassay is a 5 hour solid phase chemiluminescent ELISA designed to measure human TNF-alpha in cell culture supernates, serum, and plasma. It contains E. coli-derived recombinant human TNF-alpha and antibodies raised against the recombinant factor. It has been shown to accurately quantitate recombinant human TNF-alpha . Results ob...tained using naturally occurring TNF-alpha samples showed linear curves that were parallel to the standard curves obtained using the QuantiGlo® kit standards. These results indicate that this kit can be used to determine relative mass values for natural human TNF-alpha .
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Specificity
Natural and recombinant human TNF-alpha .
Source
N/A
Inter-Assay
See PDF Datasheet for details
Intra-Assay
See PDF Datasheet for details
Spike Recovery
See PDF Datasheet for details
Sample Volume
See PDF Datasheet for details

Applications/Dilutions

Dilutions
  • ELISA
Application Notes
No significant interference observed with available related molecules.
Publications
Read Publications using QTA00C.

Packaging, Storage & Formulations

Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Human TNF-alpha QuantiGlo ELISA Kit

  • APC1 protein
  • Cachectin
  • Cachetin
  • DIF
  • TNF
  • TNF, monocyte-derived
  • TNFA
  • TNF-A
  • TNFalpha
  • TNF-alpha
  • TNF-alphacachectin
  • TNFATNF, macrophage-derived
  • TNFG1F
  • TNFSF1A
  • TNFSF2
  • TNFSF2TNF superfamily, member 2
  • tumor necrosis factor (TNF superfamily, member 2)
  • tumor necrosis factor alpha
  • Tumor necrosis factor ligand superfamily member 2
  • tumor necrosis factor
  • tumor necrosis factor-alpha

Background

Tumor Necrosis Factor alpha (TNF-alpha ), also known as cachectin and TNFSF1A, is the prototypic ligand of the TNF superfamily (1). It is a pleiotropic molecule that plays a central role in inflammation, immune system development, apoptosis, and lipid metabolism (2-5). TNF-alpha is also involved in a number of pathological conditions including asthma, Crohn's disease, rheumatoid arthritis, neuropathic pain, obesity, type 2 diabetes, septic shock, autoimmunity, and cancer (5-11). 
 Human TNF-alpha is synthesized as a 26 kDa type II transmembrane protein that consists of a 35 amino acid (aa) cytoplasmic domain, a 21 aa transmembrane segment, and a 177 aa extracellular domain (ECD) (12, 13). Within the ECD, human TNF-alpha shares 97% aa sequence identity with rhesus monkey, and 71%-92% aa identity with bovine, canine, cotton rat, equine, feline, mouse, porcine, and rat TNF-alpha . It is produced by a wide variety of immune, epithelial, endothelial, and tumor cells. TNF-alpha is assembled intracellularly to form a noncovalently linked homotrimer which is expressed on the cell surface (14). Cell surface TNF-alpha can both induce the lysis of tumor cells and virus infected cells, and generate its own downstream cell signaling following ligation by soluble TNF RI (15, 16). Shedding of membrane bound TNF-alpha by TACE/ ADAM17 releases the bioactive cytokine, a 55 kDa soluble trimer of the TNF-alpha extracellular domain (17-19). 
 TNF-alpha binds the ubiquitous 55-60 kDa TNF RI (20, 21) and the hematopoietic cell-restricted 78-80 kDa TNF RII (22, 23), both of which are also expressed as homotrimers (1, 24). Both type I and type II receptors bind TNF-alpha with comparable affinity and can promote NF kappa B activation (25-28). Only TNF RI, however, contains a cytoplasmic death domain which triggers the activation of apoptosis (3, 29). Soluble forms of both types of receptors are released into human serum and urine and can neutralize the biological activity of TNF-alpha (30-32).

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