Simple Plex Control for Human IL-21

Name: Simple Plex Control for Human IL-21
Brand: R&D Systems
SKU: 897203
Price: 150 USD
Availability: InStock

R&D Systems | Catalog # 897203

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Citations

Product Documents

Control for use with Human IL-21 Simple Plex Assay Cartridge Kit

Product Summary
Preparation & Storage
Background
Product Documents
Specific Notices
Research Areas

Key Product Details

Species

Human

Product Summary for Simple Plex Control for Human IL-21

INTENDED USE AND DESCRIPTION: For use a quantitative control for the determination of human IL-21 concentrations in biological fluids. Controls are supplied lyophilized. Please refer to the lot specific certificate of analysis and Simple Plex Lyophilized Quality Control product insert for additional information.

Formulation, Preparation, and Storage

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Storage

• Store lyophilized controls at 2-8 °C. Lyophilized controls are stable for up to 12 months from date of receipt.
• Reconstituted controls are stable for up to 6 months from date of preparation when stored at ≤ -70 °C. Storage at -20° C is not recommended.
• Individual frozen aliquots of low and high controls are designed as single-use entities. Thaw directly before use and discard any remaining volume.

Background: IL-21

IL-21 (Interleukin-21) is member of the family of cytokines that utilize the common gamma chain as a receptor subunit. This subunit is also a component of the receptors for IL-2, IL-4, IL-7, IL-9, and IL-15. IL-21 is produced by activated T follicular helper cells (Tfh), Th17 cells, and NKT cells. It exerts its biological effects through a heterodimeric receptor complex of the common gamma chain and the IL-21-specific IL-21 R. IL-21 supports Tfh cell development, immunoglobulin affinity maturation, plasma cell differentiation, B cell memory responses, and the migration of dendritic cells to draining lymph nodes. It costimulates the activation, proliferation, and survival of CD8+ T cells and NKT cells and promotes Th17 cell polarization. It blocks the generation of regulatory T cells and their suppressive effects on CD4+ T cells. In addition, IL-21 suppresses cutaneous hypersensitivity reactions by limiting allergen-specific IgE production and mast cell degranulation.