Recombinant Human IL-21 (ELISA Std.)

Pricing & Availability
Regulatory Status
RUO
Other Names
Interleukin 21
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571209 4 pack £65
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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 (to obtain lot-specific concentration and expiration, please enter the lot number in our Certificate of Analysis online tool.)
Storage & Handling
Unopened vials can be stored between 2°C and 8°C until the expiration date. 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. 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
Cell Biology, Immunology, Stem Cells
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
Go To Top Version: 2    Revision Date: 02/29/2016

For Research Use Only. Not for diagnostic or therapeutic use.

 

This product is supplied subject to the terms and conditions, including the limited license, located at www.biolegend.com/terms) ("Terms") and may be used only as provided in the Terms. Without limiting the foregoing, BioLegend products may not be used for any Commercial Purpose as defined in the Terms, resold in any form, used in manufacturing, or reverse engineered, sequenced, or otherwise studied or used to learn its design or composition without express written approval of BioLegend. Regardless of the information given in this document, user is solely responsible for determining any license requirements necessary for user’s intended use and assumes all risk and liability arising from use of the product. BioLegend is not responsible for patent infringement or any other risks or liabilities whatsoever resulting from the use of its products.

 

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