Human IL-12p70 ELISA Kit (48-well)

CAT#: EA100037

Human IL-12p70 ELISA Kit (48-well)

Product Images

Representative standard curve for IL-12p70 ELISA. IL-12p70 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: 31.25-2000pg/ml
• Sample Type: Cell culture supernatant, serum, plasma (EDTA, citrate, heparin)
• Sample Volume: 20 uL
• Specificity: Natural and recombinant Human IL-12p70 Ligand
• Sensitivity: 7pg/mL
• Reactivities: Human
• Interference: No significant interference observed with available related molecules.
• Components:
  • Aluminium pouches with a Microwell Plate coated with monoclonal antibody to human IL-12p70 (8x6)
  • 2 vials human IL-12p70 Standard lyophilized, 2000pg/ml upon reconstitution
  • 2 vials concentrated Biotin-Conjugate anti-human IL-12p70 polyclonal 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
  • 3 pieces Adhesive Films
  • package insert
• Background:

  IL-12, also known as natural killer cell stimulatory factor (NKSF) or cytotoxic lymphocyte maturation factor (CLMF), is a pleiotropic cytokine produced primarily by antigen-presenting cells (monocytes/macrophages, dendritic cells and B lymphocytes). IL-12 has multiple effects on T lymphocytes and natural killer (NK) cells, including the ability to stimulate cytotoxicity, proliferation, cytokine production and Th1 subset development .

  IL-12 is a disulfide-linked, 70 kDa (p70) heterodimeric glycoprotein composed of a 40 kDa (p40) subunit and a 35 kDa (p35) subunit. The p40 and p35 subunits by themselves do not have IL-12 activity, but the homodimer of p40 has been shown to bind the IL-12 receptor and is an IL-12 antagonist .

  The genes for human p40 and p35, found on chromosomes 5 and 3, respectively, are independently regulated . The expression of p35 mRNA has been found to be nearly ubiquitous. However, p35 subunits have not been detected in culture supernates of cells expressing only p35 or both p35 and p40 mRNAs . In cells expressing both p35 and p40 mRNAs, p40 mRNA is expressed to a higher level and free p40 subunits not associated with p35 subunits are secreted together with heterodimeric IL-12p70 .

  In the culture supernates of various activated human monocytes where free p40 is present in vast excess over p70, the levels of p70 measured by bioassays are consistent with those measured using a p70-specific immunoassay, suggesting that p40 monomers are not efficient IL-12 antagonists . Currently, the physiological role of free p40 subunits is not clear.

• Gene Symbol: IL12B
• Standard Curve:
  
  Representative standard curve for IL-12p70 ELISA. IL-12p70 was diluted in serial two-fold steps in Sample Diluent.