Invitrogen™ TNF alpha Human Uncoated ELISA Kit

Uncoated ELISA Kit

Product Code	Brand	Quantity
15541127	Invitrogen™ 88-7346-77	20 x 96 Tests
15561127	Invitrogen™ 88-7346-88	10 x 96 Tests

Description

The Human Tumor Necrosis Factor Alpha (TNF-α) Uncoated ELISA Kit contains pre-matched antibody pairs, and reagents for performing quantitative enzyme linked immunosorbent assays (ELISA) to detect and quantify protein levels of human TNF-α. Wash Buffer and Stop Solution are needed to complete the ELISA reaction and are sold separately. Principle of the method ELISAs are designed to measure the amount of the target bound between a matched antibody pair. A target-specific antibody is coated to the bottom of the wells of a microplate, which is an overnight process. Samples, standards, or controls are then added into these wells and bind to the immobilized (capture) antibody. A 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.

Tumor Necrosis Factor is a polypeptide cytokine produced by monocytes and macrophages. It functions as a multipotent modulator of immune response and further acts as a potent pyrogen. TNF-alpha circulates throughout the body responding to stimuli (infectious agents or tissue injury), activating neutrophils, altering the properties of vascular endothelial cells, regulating metabolic activities of other tissues, as well as exhibiting tumoricidal activity by inducing localized blood clotting. TNF-alpha also inhibits lipoprotein lipase activity resulting in cachexia, a physical wasting condition. Activation of B-cells by the Epstein Barr virus can be inhibited by TNF-alpha. Due to its varied actions throughout the immune system, TNF-alpha may play a role in the pathogenesis of many disease states. TNF-alpha production is mediated by the action of lymphokines and endotoxins on the macrophage. Purified monocytes produce TNF-alpha within four hours of stimulation by recombinant IL-2 and there is some in vitro evidence to suggest that TNF-alpha is expressed at high levels and with prolonged kinetics in T cells stimulated by both CD2 and CD28. Secretion of TNF-alpha is enhanced by gamma interferon. TNF then induces or enhances the specific production of Class I MHC antigen, GM-CSF, and IL-1.

Specifications

• Accession Number: P01375
• Assay Sensitivity: 4 pg/mL
• Product Type: ELISA Kit
• Target Species: Human
• For Use With (Equipment): Colorimetric Microplate Reader
• Gene Symbol: CANDF6,IL-17F,ML-1,ML1
• Label or Dye: HRP
• Sample Volume: Plasma, 100 μL; Serum, 100 μL; Supernatant, 100 μL
• Synonym: Tumor Necrosis Factor alpha, tnf-a, tnf-alpha
• Test Time: 1 hr. 45 min.

• Assay Range: 4-500 pg/mL
• Conjugate: Biotin
• Sample Type: Plasma, Serum, Supernatant
• For Use With (Application): ELISA
• Gene ID (Entrez): 7124
• Kit Contents: Capture Antibody: Pre-titrated; purified antibody, Detection Antibody: Pre-titrated; biotin-conjugated antibody, Standard: Recombinant cytokine for generating standard curve and calibrating samples, ELISA/ELISPOT Coating Buffer Powder: This uncoated ELISA kit may contain ELISA/ELISPOT Coating Buffer Powder (Reconstitute to 1L with dH20 and filter (0.22 µM)) or 10X PBS ELISA Coating Buffer (Dilute 1 part 10X Buffer into 9 parts dH20)., Assay Diluent: 5X concentrated, Detection enzyme: Pre-titrated Streptavidin-HRP Concentrate (100X), Substrate Solution: Tetramethylbenzidine (TMB) Substrate Solution, Certificate of Analysis: Lot-specific instructions for dilution of antibodies and standards, 96 Well Plate: Corning Costar 9018 (included with product Cat. Nos. ending in suffixes -22; -44; -76; -86)
• Regulatory Status: RUO
• Storage Requirements: 2°C to 8°C
• Target: Human
• Total Assay Time: 24 hr. 30 min.