Invitrogen™ IL-21 Biosimilar Recombinant Monoclonal Antibody

Recombinant Monoclonal Antibody

Product Code	Brand	Quantity
30282471	Invitrogen™ MA558335	100 μg
30282775	Invitrogen™ MA558336	1 mg

Description

For reconstitution, add sterile, distilled water to achieve a final antibody concentration of 1 mg/mL. Gently shake to solubilize the protein completely. Do not vortex. Reconstituted products should be stored at -80 °. This antibody can also be cross referenced by the term Lilly patent anti-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

• Antigen: IL-21 Biosimilar
• Content And Storage: -20°C, Avoid Freeze/Thaw Cycles
• Classification: Recombinant Monoclonal
• Form: Lyophilized
• Isotype: IgG1
• Target Species: Human
• Primary or Secondary: Primary
• Purification Method: Protein A

• Concentration: 1 mg/mL
• Applications: ELISA, Flow Cytometry, Functional Assay, Surface Plasmon Resonance
• Conjugate: Unconjugated
• Host Species: Human
• Regulatory Status: RUO
• Formulation: 25mM histidine with 8% sucrose, 0.01% Tween 80 and no preservative; pH 6.2
• Product Type: Antibody