Mouse CD25/IL-2R alpha Antibody Summary
Accession # Q544I2
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Mouse CD25/IL-2 R alpha Sandwich Immunoassay
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.
Cell Proliferation Induced by IL‑2 and Neutralization by Mouse CD25IL‑2 R alpha Antibody. Recombinant Mouse IL-2 (402-ML) stimulates proliferation in the CTLL-2 mouse cytotoxic T cell line in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Mouse IL-2 (2 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Mouse CD25/IL-2 Ra Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2438). The ND50 is typically 5-20 µg/mL.
CD25/IL‑2 R alpha in Mouse Spleen. CD25/IL-2 Ra was detected in immersion fixed frozen sections of mouse spleen using 5 µg/mL Goat Anti-Mouse CD25/IL-2 Ra Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2438) overnight at 4 °C. Tissue was stained with the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red; NL001) and counterstained (green). View our protocol for Fluorescent IHC Staining of Frozen Tissue Sections.
Preparation and Storage
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
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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- Kovanen, P.E. and W.J. Leonard (2004) Immunol. Rev. 202:67.
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- Takeshita, T. et al. (1992) Science 257:379.
- Wang, X. et al. (2005) Science 310:1159.
- Wagner, D.K. et al. (1986) J. Immunol. 137:592.
- Schulz, O. et al. (1998) J. Exp. Med. 187:271.
- Witkowska, A.M. (2005) Mediat. Inflamm. 2005:121.
- Willerford, D.M. et al. (1995) Immunity 3:521.
- Van Parijs, L. et al. (1997) J. Immunol. 158:3738.
- Almeida, A.R.M. et al. (2002) J. Immunol. 169:4850.
Citations for Mouse CD25/IL-2R alpha 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.
Citations: Showing 1 - 2
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Luteolin Regulates the Differentiation of Regulatory T Cells and Activates IL-10-Dependent Macrophage Polarization against Acute Lung Injury
Authors: K Xie, YS Chai, SH Lin, F Xu, CJ Wang
Journal of Immunology Research, 2021;2021(0):8883962.
Sample Types: In Vivo
CCL28 promotes locomotor recovery after spinal cord injury via recruiting regulatory T cells
Authors: P Wang, X Qi, G Xu, J Liu, J Guo, X Li, X Ma, H Sun
Aging (Albany NY), 2019;11(18):7402-7415.
Sample Types: In Vivo
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