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95195
Mouse IL-21 Recombinant Protein
Cytokines
Growth Factors and Cytokines

Mouse IL-21 Recombinant Protein #95195

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Mouse IL-21 Recombinant Protein: Image 1

Serial dilutions of Mouse IL-21 Recombinant Protein were added to B9 cells. Cell proliferation was measured and the linear portion of the curve was used to calculate the ED50.

Mouse IL-21 Recombinant Protein: Image 2

The purity of Mouse IL-21 Recombinant Protein was determined by SDS-PAGE of 1 µg reduced (+) and non-reduced (-) recombinant mIL-21 and staining with Coomassie Blue.

Storage

Mouse IL-21 Recombinant Protein is supplied as lyophilized material that is very stable at -20°C. It is recommended to reconstitute with sterile water at a concentration of 0.1 mg/ml which can be further diluted in aqueous solutions as needed. Addition of a carrier protein (0.1% HSA or BSA) is recommended for long-term storage.

Product Description

MW (kDa) 15
Purity

A greater than or equal to 95% purity was determined by SDS-PAGE.

Endotoxin

Endotoxin levels are less than or equal to 1 EU / 1 μg mIL-21.

Activity

The bioactivity of recombinant mIL-21 was determined in a B9 cell proliferation assay. The ED50 of each lot is less than or equal to 50 ng/ml.

Source / Purification

Recombinant mouse IL-21 was expressed in E. coli and is supplied in a lyophilized form.

Background

IL-21 is produced by Th17, T follicular helper (Tfh), and NKT cells (1-3). Targets include T cells, B cells, NK cells, and dendritic cells (1-3,5). IL-21 induces proliferation and activation of NK cells, thereby upregulating IFN-γ production and cytotoxic activity (1,3,4). IL-21 increases proliferation and survival of CD40-primed B cells (1,2) and appears to have a significant role in plasma cell differentiation (2). IL-21 binds to a complex consisting of IL-21Rα and the common γ chain, γc. IL-21 binding activates the Jak1/Jak3, Stat1, Stat3 and Stat5 pathways. IL-21 binding can also activate the MAP kinase and PI3K/Akt pathways.

  1. Parrish-Novak, J. et al. (2000) Nature 408, 57-63.
  2. Parrish-Novak, J. et al. (2002) J Leukoc Biol 72, 856-63.
  3. Konforte, D. et al. (2009) J Immunol 182, 1781-7.
  4. Strengell, M. et al. (2002) J Immunol 169, 3600-5.
  5. Davis, I.D. et al. (2007) Clin Cancer Res 13, 6926-32.

Pathways & Proteins

Explore pathways + proteins related to this product.

Limited Uses

Except as otherwise expressly agreed in a writing signed by a legally authorized representative of CST, the following terms apply to Products provided by CST, its affiliates or its distributors. Any Customer's terms and conditions that are in addition to, or different from, those contained herein, unless separately accepted in writing by a legally authorized representative of CST, are rejected and are of no force or effect.

Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST's products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST's Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

For Research Use Only. Not For Use In Diagnostic Procedures.
Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
To Purchase # 95195S
Product # Size Price
95195S
10 µg $ 207