Mouse CD25/IL-2R alpha APC-conjugated Antibody

Applications

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.

Scientific Data

Flow Cytometry View Larger

Detection of CD25/IL-2 R alpha in Mouse Splenocytes by Flow Cytometry. Mouse splenocytes were stained with Rabbit Anti-Human/Mouse FoxP3 PE-conjugated Monoclonal Antibody (Catalog # IC8214P) and either (A) Rat Anti-Mouse CD25/IL-2 R alpha APC-conjugated Monoclonal Antibody (Catalog # FAB9164A) or (B) Rat IgG₁Allophycocyanin Isotype Control (Catalog # IC005A). View our protocol for Staining Membrane-associated Proteins.

Preparation and Storage

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). 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. 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. 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. 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. Increased serum levels of soluble IL-2 R alpha are found in some cancers and immune disorders. 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. 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.

Product Datasheets

Related Research Areas

• Acute Lymphoblastic Leukemia
• Acute Myeloid Leukemia
• B Cell Activation
• B Cell Markers
• Cancer Biomarkers
• Common gamma Chain Receptor Family
• Cytokines and Receptors in Allergy and Asthma
• Cytokines and Receptors in Tfh Cell Differentiation and Function
• Group 1 ILCs
• Group 2 ILCs
• Isolation, Culture, and Identification of Natural Killer Cells
• LTi Cells
• Lymphoma
• NCR+ILC3
• NCR-ILC3
• Preeclampsia
• Receptors in the Jak/STAT Pathway
• Regulatory T Cells (Tregs)
• T Cell Cytokine Signaling