Invitrogen™ Rabbit IL-21 ELISA Kit

Catalog No.	Quantity
ER8RBX5	5 x 96 Tests
ER8RB	96 Tests

Catalog No. ER8RBX5 Supplier Invitrogen™ Supplier No. ER8RBX5

Description

ELISA

Rabbit IL-21 quantitates rabbit IL-21 in serum, plasma, supernatant. The assay will exclusively recognize both natural and recombinant rabbit IL-21.

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 maintenance 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.

Specifications

• Accession Number: CVID11; C x 2; il 21; Il21; IL-21; ILN; Interleukin; interleukin 21; interleukin 21-like; Interleukin21; interleukin-21; interleukin-21 isoform; LOC100344172; porcine interleukin-21; Za11
• Assay Range: 2.45 to 600 ng/mL
• Assay Sensitivity: 2.45 ng/mL
• Conjugate: HRP
• Product Type: ELISA
• Sample Type: Plasma, Serum, Supernatant
• For Use With (Equipment): Colorimetric Microplate Reader
• Gene ID (Entrez): 100344172
• Gene Symbol: IL21
• Interassay CV: <12%
• Intraassay CV: <10
• Kit Contents: Pre-coated 96 well plate, Standard, Assay Diluent concentrate, Biotinylated Detection Antibody, SAV-HRP, Wash Buffer, Chromogen, Stop Solution, Adhesive Plate Covers
• Label or Dye: HRP
• Quantity: 5 x 96 Tests
• Regulatory Status: RUO
• Sample Volume: Plasma 50 μL, Serum 50 μL, Supernatant 50 μL
• Storage Requirements: 2°C to 8°C
• Target: IL-21
• Test Time: 1 hrs 20 mins
• Total Assay Time: 4 hrs 45 mins