Recombinant Human IL-21 (ELISA Std.)

Pricing & Availability
Regulatory Status
RUO
Other Names
Interleukin 21
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571209 4 pack 64€
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Description

Interleukin 21 (IL-21) is a potent immunomodulatory cytokine mainly produced by NKT and CD4+ T-cells, particularly the inflammatory Th17 subset and has pleiotropic effects on both innate and adaptive immune responses.  These actions include positive effects such as enhanced proliferation of natural killer (NK) cells and cytotoxic T cells that can destroy virally infected or cancerous cells and direct inhibitory effects on the antigen-presenting function of dendritic cells and can be proapoptotic for B cells and NK cells.  Recent studies have shown that IL-21 is also an autocrine cytokine that potently induces Th17 differentiation and suppresses Foxp3 expression, and serves as a target for treating inflammatory diseases.

Product Details
Technical Data Sheet (pdf)

Product Details

Source
E.coli, approximately 15.4 kD
Formulation
Lyophilized in sterile-filtered PBS, pH 7.2, containing 1% BSA, 0.09% sodium azide, and protease inhibitors.
Concentration
Lot-specific (please contact technical support for mass/vial, or use our Lookup tool if you have a lot number.)
Storage & Handling
Upon receipt, store unopened vials between 2°C and 8°C immediately and use within 12 months from date of receipt. Prior to use, reconstitute the lyophilized powder with 0.2 ml of PBS containing a carrier protein (e.g., 1% BSA, protease free), pH7.4. Re-cap vial, vortex. Allow the reconstituted standard to sit at room temperature for 15 minutes, vortex again to mix completely. The reconstituted standard stock solution can be aliquoted into polypropylene vials and stored at -70°C for up to one month. Do not re-use diluted standards. Use a manual defrost freezer and avoid repeated freeze thaw cycles.
Application

ELISA

Recommended Usage

Each lot of this protein is quality control tested by ELISA assay. For use as an ELISA standard, a standard curve comprised of doubling dilutions from 2000 pg/ml to 31.3 pg/ml is suggested. It is recommended that the reagent be titrated for optimal performance for each application.

Application Notes

This IL-21 protein is useful as a standard for a human IL-21 sandwich ELISA, using unlabelled anti-IL-21 antibody, clone 3A3-N2 (catalog #513002) for capture and biotinylated 2B2-G20 (catalog #513102) antibody for detection.

Antigen Details

Function
Immunomodulation
Cell Sources
NK-T cells and T cells
Cell Targets
cytotoxic T cells (CTL) and Natural Killer (NK) cells, that can destroy malignant or infected cells
Receptors
IL-21R
Biology Area
Stem Cells, Cell Biology, Immunology
Molecular Family
Cytokines/Chemokines
Antigen References

1. Nurieva R,et al. 2007. Nature 448:416.
2. Parrish-Novak J, et al. 2002. J. Leukocyte Biol. 72:856.
3. Dumoutier L, et al. 2000. Proc. Natl. Acad. Sci. USA 97:10144.
4. Asao H, et al. 2001. J. Immunol. 167:1.
5. Parrish-Novak J, et al. 2000. Nature 408:57.

Gene ID
59067 View all products for this Gene ID
UniProt
View information about IL-21 on UniProt.org

Related FAQs

There are no FAQs for this product.
Go To Top Version: 2    Revision Date: 02/29/2016

For research use only. Not for diagnostic use. Not for resale. BioLegend will not be held responsible for patent infringement or other violations that may occur with the use of our products.

 

*These products may be covered by one or more Limited Use Label Licenses (see the BioLegend Catalog or our website, www.biolegend.com/ordering#license). BioLegend products may not be transferred to third parties, resold, modified for resale, or used to manufacture commercial products, reverse engineer functionally similar materials, or to provide a service to third parties without written approval of BioLegend. By use of these products you accept the terms and conditions of all applicable Limited Use Label Licenses. Unless otherwise indicated, these products are for research use only and are not intended for human or animal diagnostic, therapeutic or commercial use.

 

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