Mouse CD25/IL-2R alpha PE-conjugated Antibody Summary
Accession # P01590
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Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Detection of CD25/IL-2 R alpha in CD4+Mouse T Cells by Flow Cytometry. CD4+mouse T cells treated with anti-mouse CD3 and anti-mouse CD28 for 24 hours were stained with Rat Anti-Mouse CD25/IL-2 R alpha PE-conjugated Monoclonal Antibody (Catalog # FAB2438P) and Rat Anti-Mouse CD4 Fluorescein-conjugated Monoclonal Antibody (Catalog # FAB554F). Quadrant markers were set based on control antibody staining (Catalog # IC006P). View our protocol for Staining Membrane-associated Proteins.
Preparation and Storage
- 12 months from date of receipt, 2 to 8 °C as supplied.
Background: CD25/IL-2R alpha
IL-2 receptor alpha (IL-2 R alpha ), also known as CD25, is a 55 kDa type I membrane glycoprotein that belongs to the family of cytokine receptors that utilize the common gamma chain subunit ( gamma c). IL-2 R alpha is primarily expressed on activated T cells and on regulatory T cells (Treg) (1‑3). The mouse IL-2 R alpha cDNA encodes a 268 amino acid (aa) precursor that includes a 21 aa signal peptide, a 215 aa extracellular domain (ECD) with two Sushi domains, a 21 aa transmembrane segment, and an 11 aa cytoplasmic domain (4, 5). Within the ECD, mouse IL-2 R alpha shares 81% and 58% aa sequence identity with rat and human IL-2 R alpha, respectively. It shares approximately 15% aa sequence identity with IL-4, -7, -9, -15, and -21 receptor subunits that also complex with gamma c. IL-2 R beta (CD122) and gamma c (IL-2 R gamma /CD132) dimerize to form a constitutively expressed intermediate affinity IL-2 receptor (6, 7). By itself, IL-2 R alpha binds IL-2 with low affinity. It associates with IL-2 R beta and gamma c to generate a ternary high affinity IL-2 receptor complex (8). A soluble form of IL-2 R alpha can be generated by proteolytic cleavage of the cell surface receptor, rendering the T cell unresponsive to IL-2 (9, 10). Increased serum levels of soluble IL-2 R alpha are found in some cancers and immune disorders (11). IL-2 R alpha is required for Activation Induced Cell Death (AICD) of naive T cells, a mechanism responsible for deleting autoreactive T cell clones (12, 13). IL-2 R alpha is also required for the development of CD4+CD25+ Treg which suppress autoreactive CD4+ T cells, thereby contributing to peripheral T cell homeostasis (12‑14).
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Citation for Mouse CD25/IL-2R alpha PE-conjugated Antibody
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.
1 Citation: Showing 1 - 1
Early Pregnancy Factor Enhances the Generation and Function of CD4(+)CD25(+) Regulatory T Cells
Authors: Honghua Yuan
Tohoku J. Exp. Med., 2016;240(3):215-220.
Sample Types: Whole Cells
Applications: Flow Cytometry
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