Invitrogen™ IL-12 p70 Human ELISA Kit

For the quantitative detection of human IL-12 p70.

Supplier:  Invitrogen™ BMS238

Catalog No. 50-181-21

Includes:

• Aluminum pouch(es) with a Microwell Plate coated with monoclonal antibody to human IL-12 p70
• Biotin-Conjugate anti-human IL-12 p70 monoclonal antibody
• Streptavidin-HRP
• Human IL-12 p70 Standard lyophilized, 400pg/mL upon reconstitution
• Control high, lyophilized
• Control low, lyophilized
• Sample Diluent
• Assay Buffer Concentrate 20x (PBS with 1% Tween 20 and 10% BSA)
• Wash Buffer Concentrate 20x (PBS with 1% Tween 20)
• Substrate Solution (tetramethyl-benzidine)
• Stop Solution (1M Phosphoric acid)
• Blue-Dye
• Green-Dye
• Red-Dye
• Adhesive Films

Description

The Human Interleukin-12 p70 (IL-12 p70) ELISA quantitates Hu IL-12 p70 in human serum, plasma, buffered solution, or cell culture medium. The assay will exclusively recognize both natural and recombinant Hu IL-12 p70. Principle of the method The Human IL-12 p70 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-12 (IL-12) is a heterodimeric 70 kDa cytokine composed of two covalently linked, glycosylated chains with molecular weights of 40kD (p40) and 35-kD (p35). IL-12 is mainly produced by monocytes, macrophages, and dendritic cells in response to bacterial products such as lipopolysaccharides (LPS), to intracellular pathogens or upon interaction with activated T cells. IL-12 was originally discovered because of its ability to induce interferon-gamma (IFN-g) production, cell proliferation, and cytotoxicity mediated by natural killer cells and T cells. Studies have established that IL-12 also plays a key role in the development of Th1 responses, leading to IFN-g and IL-2 production. These cytokines can in turn promote T-cell responses and macrophage activation. Recombinant mouse IL-12 p70 is produced in baculovirus-infected insect cells as an authentic heterodimer of precursor p35 and p40 subunits using a dual promoter expression system. IL-12 p70 is distinct from other available forms of the protein in that it is expressed as a true heterodimer, as opposed to a single-chain, pseudo-heterodimer in which the subunits are joined by an artificial linker. The responses of lymphocytes to this cytokine are mediated by the activator of transcription protein STAT4. Nitric oxide synthase 2A (NOS2A/NOS2) is found to be required for the signaling process of this cytokine in innate immunity. Human and mouse IL-12 p40 share about 70% amino acid sequence homology.

Specifications

• Accession Number: P29459,P29460
• Assay Sensitivity: 2.1 pg/mL
• Product Type: ELISA Kit
• Target Species: Human
• For Use With (Equipment): Colorimetric Microplate Reader
• Gene Symbol: CLMF,CLMF2,IL-12B,IMD28,IMD29,NKSF,NKSF2,CLMF,IL-12A,NFSK,NKSF1,P35
• Intraassay CV: 3%
• Label or Dye: HRP
• Regulatory Status: RUO
• Storage Requirements: 2°C to 8°C
• Target: Human
• Total Assay Time: 3 hr. 10 min.

• Assay Range: 3.1-200 pg/mL
• Conjugate: Biotin
• Sample Type: Plasma, Serum, Supernatant
• For Use With (Application): ELISA
• Gene ID (Entrez): 3592, 3593
• Interassay CV: 4.8%
• Kit Contents: Pre-coated 96 well plate, Standard, Sample Diluent, Assay Buffer concentrate, Biotinylated Detection Antibody, SAV-HRP, Wash Buffer, Controls, Chromogen, Stop Solution, Adhesive Plate Covers
• Quantity: 96 Tests
• Sample Volume: Plasma, 50 μL; Serum, 50 μL; Supernatant, 50 μL
• Synonym: Interleukin-12 subunit p70, CLMF, NKSF
• Test Time: 1 hr. 20 min.

For Research Use Only