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Your Position: 홈 > Kits > TNF-alpha > RAS-SP003

Human TNF-alpha ELISPOT Kit

For research use only.
IDComponentsSize
RSP003-C01Pre-coated Anti-TNF-α Antibody Microplate1 plate
RSP003-C02Positive Stimulus20 μg
RSP003-C03Biotin-Anti-TNF-α Antibody20 μg
RSP003-C04Streptavidin-HRP50 μL
RSP003-C05Washing Buffer (10x)50 mL
RSP003-C06Dilution Buffer (1x)50 mL
RSP003-C07AEC Dilution 25 mL
RSP003-C08AEC Solution A (20x)0.8 mL
RSP003-C09AEC Solution B (20x)0.8 mL
RSP003-C10AEC Solution C (20x)0.8 mL
  • Background
    Tumor necrosis factor-alpha (TNF-α) is a multifunctional Th1 cytokine and one of the most important inflammatory cytokines. It is produced by macrophages during inflammation and can also be activated by the endotoxin lipopolysaccharide (LPS). The Human TNF-α ELISpot assay is designed for the detection of human TNF-α secreting cells at the single cell level and can be used to quantitate the frequency of human TNF-α secreting cells. ELISpot assays are highly reproducible and sensitive, and can be used to measure responses with frequencies well below 1 in 100,000. ELISpot assays do not require prior in vitro expansion of T cells and they are suitable for high-throughput analysis using only small volumes of primary cells. As such, ELISpot assays are useful tools for research in vaccine development, cytokine secretion and the monitoring of various clinical trials.
  • Application

    This kit is used to detect TNF-alpha at the cellular level.

    It is for research use only.

  • Reconstitution
    Please see Certificate of Analysis for details of reconstitution instruction and specific concentration.
  • Storage
    1. Unopened kit should be stored at 2℃-8℃ upon receiving.

    2. Find the expiration date on the outside packaging and do not use reagents past their expiration date.

    3. Please use it up once you opened it.

  • Assay Principles
    ELISpot assays employ the quantitative sandwich enzyme-linked immunosorbent assay (ELISA) technique. The Kit consists of Pre-coated Anti-TNF-α Antibody Microplate, Positive Stimulus, Biotin-Anti-TNF-α Antibody, Streptavidin-HRP, AEC and buffers.

    Your experiment will include 6 simple steps:

    a) A monoclonal antibody specific for human TNF-α has been pre-coated onto a polyvinylidene difluoride (PVDF)-backed microplate.

    b) Appropriately stimulated cells are pipetted into the wells and the microplate is placed into a humidified 37 °C CO2 incubator for a specified period of time.During this incubation period, the immobilized antibody in the immediate vicinity of the secreting cells binds secreted TNF-α.

    c) After washing away any cells and unbound substances, a biotinylated antibody specific for human TNF-α is added to the wells. Following a wash to remove any unbound biotinylated antibody, HRP conjugated to streptavidin is added.

    d) Wash the plate and add the Streptavidin-HRP diluted by Dilution Buffer to the plate.

    e) Wash the plate and add AEC. A reddish-brown colored precipitate forms and appears as spots at the sites of cytokine localization, with each individual spot representing an individual TNF-α secreting cell.

    f) SThe spots can be counted with an automated ELISpot reader system or manually using a stereomicroscope.

Typical Data Please refer to DS document for the assay protocol.
TNF-alpha TYPICAL DATA

5x10³ cells/well PBMC were stimulated with 0.1μg/mL LPS and cultured at 37℃ and 5%CO2 for 20h, 426 spots were produced. The following example data is for reference only.

  • Clinical and Translational Updates

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