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IL-21 Rat anti-Mouse, eFluor® 660, Clone: FFA21, eBioscience™

Rat Monoclonal Antibody

Marque:  Affymetrix eBioscience 50-7211-80

Code nomenclature Nacres: NA.41

Informations supplémentaires : Poids : 0.25000kg

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Code produit. 15341950

  • sur devis / 25µg

Pour délai, nous consulter 03 88 67 14 14

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Applications Tested: This FFA21 antibody has been tested by intracellular staining and flow cytmetric analysis of Th17 stimulated mouse cells. This can be used at less than or equal to 0.25 µg per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest. eFluor® 660 is a replacement for Alexa Fluor® 647. eFluor® 660 emits at 659 nm and is excited with the red laser (633 nm). Please make sure that your instrument is capable of detecting this fluorochome. Excitation: 633-647 nm; Emission: 668 nm; Laser: Red Laser. Filtration: 0.2 μm post-manufacturing filtered. IL-21 is a 17 kDa immunomodulatory cytokine produced mainly by Natural Killer Cells (NKT), T helper (Th) 17 and T follicular helper (TFH) cells. In TFH cells, IL-21 expression leads to autocrine signaling through the IL-21 receptor (IL-21R) and STAT3, which leads to additional transcriptional activation by Bcl6. As with IFN gamma for Th1 and IL-4 for Th2 cells, IL-21 is critical for TFH cell development and effector function. IL-21 plays a role in T cell-dependent B cell differentiation into plasma cells and memory cells, stimulation of IgG production and induction of apoptotic signaling in naive B cells. In Th17 cells, IL-21 expression and autocrine feedback through STAT3, IRF4 and ROR gamma t lead to upregulation of the IL-23R, thereby preparing Th17 cells for maturation and maintece by the inflammatory cytokine IL-23. While upregulating IRF4 and ROR gamma t, IL-21 also mediates the downregulation of Foxp3. IL-21 deficient mice are protected from developing colitis upon chemical treatment by their inability to upregulate Th17-associated molecules. In comparison, elevated levels of IL-21 are present in chemically-induced colitis mouse models.


0.2 mg/mL
PBS with 0.1% gelatin and 0.09% sodium azide; pH 7.2
Interleukin-21, IL-21, Za11
Affinity chromatography
Flow Cytometry
eFluor™ 660
IgG2a, kappa
25 μg
4° C, store in dark, DO NOT FREEZE!

For Research Use Only.