Human IL-2 ELISpot Kit
Human IL-2 ELISpot Kit Summary
* Provided that the recommended microplates, buffers, diluents, substrates and solutions are used, and the assay is run as summarized in the Assay Procedure provided.
* Following cell stimulation.
ELISpot kits are highly sensitive, microplate-based assays for the detection of cytokine secreting cells. This kit is designed for the detection and enumeration of human IL-2. Complete ELISpot kits are ready-to-run and require no assay development or refinement.
This ELISpot assay employs a capture antibody specific for human IL-2, pre-coated onto a PVDF-backed microplate. Appropriately stimulated cells are pipetted directly into the wells and the immobilized antibody in the immediate vicinity of the secreting cells binds secreted human IL-2. Following wash steps and incubation with a biotinylated detection antibody, alkaline-phosphatase conjugated to streptavidin is added. Unbound enzyme is subsequently removed by washing and a substrate solution (BCIP/NBT) is added. A blue-black colored precipitate forms at the sites of cytokine localization and appears as spots, with each individual spot representing an individual human IL-2 secreting cell. The spots can be counted with an automated ELISpot reader system or manually using a stereomicroscope.
- Detect and quantitate individual cells secreting human IL-2
- High sensitivity - ELISpot assays can measure responses with frequencies well below 1 in 100,000 cells
- No in vitro expansion of cells required
- High-throughput - ELISpot assays use only a small number of primary cells
- Biotinylated Detection Antibody
- Streptavidin conjugated to Alkaline Phosphatase
- Dilution Buffers
- Wash Buffer Concentrate
- BCIP/NBT Chromogen
- Human IL-2 Positive Control
OTHER REAGENTS REQUIRED
- Pipettes and pipette tips
- Deionized or distilled water
- Squirt bottle, manifold dispenser, or automated microplate washer
- 500 mL graduated cylinder
- 37 °C CO2 incubator
- Sterile culture media
- Dissection microscope or an automated ELISpot reader
Preparation and Storage
IL-2 (Interleukin 2) is a critical cytokine in T cell biology. It promotes T cell activation and expansion, the development, maintenance and function of regulatory T cells (Treg), and the differentiation of CD8+ T cells into terminal effector cells and memory cells. IL-2 signals through a receptor complex composed of CD25/IL-2 R alpha, IL-2 R beta, and the Common gamma Chain (gamma c). IL-2 R beta is also a component of the IL-15 receptor complex. Gamma c is also a signaling subunit in the receptors for IL-4, -7, -9, -15, and -21.
Citations for Human IL-2 ELISpot Kit
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.
Citations: Showing 1 - 2
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Human bronchial intraepithelial T cells produce interferon-gamma and stimulate epithelial cells.
Authors: Hirosako S, Goto E, Fujii K, Tsumori K, Hirata N, Tsumura S, Kamohara H, Kohrogi H
Clin. Exp. Immunol., 2009;155(2):266-74.
Sample Types: Whole Cells
A multidonor ELISPOT study of IL-1 beta, IL-2, IL-4, IL-6, IL-13, IFN-gamma and TNF-alpha release by cryopreserved human peripheral blood mononuclear cells.
Authors: Bailey T, Stark S, Grant A, Hartnett C, Tsang M, Kalyuzhny A
J. Immunol. Methods, 2002;270(2):171-82.
Sample Types: Whole Cells
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