Human TNF-a ELISA Kit (48-well)

CAT#: EA100043

Human TNF-a ELISA Kit (48-well)

Product Images

Representative standard curve for TNF-a ELISA.TNF-a was diluted in serial two-fold steps in Sample Diluent.

Specifications

Product Data

• Format: 48-well strip plate
• Assay Type: Solid Phase Sandwich ELISA
• Assay Length: 3 hours
• Signal: Colorimetric
• Curve Range: 15.625-1000pg/ml
• Sample Type: Cell culture supernatant, serum, plasma (EDTA, citrate, heparin)
• Sample Volume: 20 uL
• Specificity: Natural and recombinant Human TNF-a Ligand
• Sensitivity: 7pg/mL
• Reactivities: Human
• Interference: No significant interference observed with available related molecules.
• Components:
  • Aluminium pouches with a Microwell Plate coated with antibody to human TNF-a(8x6)
  • 2 vials human TNF-a Standard lyophilized, 4000 pg/ml upon reconstitution
  • 2 vials concentrated Biotin-Conjugate anti-human TNF-a antibody
  • 2 vials Streptavidin-HRP solution
  • 1 bottle Standard /sample Diluent
  • 1 bottle Biotin-Conjugate antibody Diluent
  • 1 bottle Streptavidin-HRP Diluent
  • 1 bottle Wash Buffer Concentrate 20x (PBS with 1% Tween-20)
  • 1 vial Substrate Solution
  • 1 vial Stop Solution
  • 4 pieces Adhesive Films
  • package insert
• Background:

  The prototype ligand of the TNF superfamily, TNF-./TNFSF1A, is a pleiotropic cytokine that plays a central role in inflammation and apoptosis . Human cells known to express TNF-. include B cells, colonic columnar epithelial cells, NK and CD3+CD56+ hepatic natural T cells, macrophages, monocytes and monocyte-derived dendritic cells, CD4+ and CD8+ T cells, mast cells, neutrophils, keratinocytes, plasma cells, and adipocytes.

  It is synthesized as a 26 kDa, type II transmembrane protein that is 233 amino acids (aa) in length . It contains a 30 aa cytoplasmic domain, a 26 aa transmembrane segment, and a 177 aa extracellular region . TNF-. is assembled intracellularly to form a transmembrane, non-covalently-linked homotrimeric protein. The 157 aa residue soluble form of TNF-. (sTNF-. is released from the C-terminus of the transmembrane protein through the activity of TNF-.-converting enzyme (TACE), a membrane-bound disintegrin metalloproteinase .

  TNF-. is reported to promote inflammatory cell infiltration by upregulating leukocyte adhesion molecules on endothelial cells, serve as a chemotactic agent for monocytes, and activate phagocyte killing mechanisms . Deficiencies in either TNF-. or its receptors can increase susceptibility to infection by intracellular pathogens . TNF- may also play a role in lymphoid tissue development. Knockout mice lack splenic B cell follicles and the ability to form germinal centers . Other potential physiological roles for TNF-. and its receptors include regulating the differentiation of hematopoietic stem and progenitor cells .

  TNF-. has been implicated in a number of pathophysiological processes. It is associated with unregulated pro-inflammatory activity and is thought to be a critical mediator of endotoxin-induced septic shock . Cachexia (or whole body wasting) has also been associated with long-term circulating TNF-.. Other disorders with potential TNF-. involvement include asthma), type 2 diabetes, CrohnÂ?s disease, and rheumatoid arthritis.

• Gene Symbol: TNF
• Standard Curve:
  
  Representative standard curve for TNF-a ELISA.TNF-a was diluted in serial two-fold steps in Sample Diluent.