Human CD25/IL-2R alpha Antibody
Human CD25/IL-2R alpha Antibody Summary
Glu22-Cys213
Accession # P01589
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.
Data Examples
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Detection of Human CD25/IL-2R alpha by Western Blot. Western blot shows lysates of HDLM-2 human Hodgkin's lymphoma cell line and PC-3 human prostate cancer cell line (negative control). PVDF membrane was probed with 1 µg/mL of Goat Anti-Human CD25/IL-2R alpha Antigen Affinity-purified Polyclonal Antibody (Catalog # AF-223-NA) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF017). A specific band was detected for CD25/IL-2R alpha at approximately 60 kDa (as indicated). GAPDH (Catalog # AF5718) is shown as a loading control.This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
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Western Blot Shows Human CD25/IL-2R alpha Specificity by Using Knockout Cell Line. Western blot shows lysates of HDLM‑2 human Hodgkin’s lymphoma cell line and human CD25/IL-2 R alpha knockout HDLM‑2 human Hodgkin’s lymphoma cell line. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human CD25/IL-2R alpha Antigen Affinity-purified Polyclonal Antibody (Catalog # AF-223-NA) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (HAF017). A specific band was detected for CD25/IL-2R alpha at approximately 60 kDa (as indicated) in the parental HDLM‑2 human Hodgkin’s lymphoma cell line cell line, but is not detectable in knockout HDLM‑2 human Hodgkin’s lymphoma cell line cell line. GAPDH (AF5718) is shown as a loading control. This experiment was conducted under reducing conditions and using Western Blot Buffer Group 1.
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Cell Proliferation Induced by IL‑2 and Neutralization by Human CD25/IL‑2 R alpha Antibody. Recombinant Human IL-2 (Catalog # 202-IL) stimulates proliferation in the N1186 human T cell line in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Human IL-2 (1 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Human CD25/IL-2 Ra Antigen Affinity-purified Polyclonal Antibody (Catalog # AF-223-NA). The ND50 is typically 0.2-1 µg/mL.
Reconstitution Calculator
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
Human CD25, also known as IL-2 receptor alpha (IL-2 R alpha ) and asTac antigen, was initially identified as a 55 kDa membrane glycoprotein that is capable of binding IL‑2. The IL-2 R alpha cDNA encodes a 272 amino acid residue precursor Type I membrane protein with a 21 residue signal peptide, a 219 residue extracellular region, a 19 residue transmembrane region and a 13 residue cytoplasmic domain. IL-2 R alpha lacks structural features characteristic of members of the cytokine receptor superfamily. By itself, IL-2 R alpha binds IL-2 with low affinity. However, when IL-2 R alpha is associated with the IL-2 receptor beta and gamma chains, a high affinity heterotrimeric receptor complex that transduces IL-2 signals is formed. Soluble forms of many cytokine receptors have been reported, and a soluble form of IL-2 R alpha (IL-2 sR alpha ) appears in serum, concomitant with its increased expression on cells. The function of the soluble IL-2 R alpha is unclear. Increased levels of IL-2 sR alpha in biological fluids reportedly correlate with increased T and B cell activation and immune system activation. Increased serum concentration of IL-2 sR alpha has been observed in patients with a variety of inflammatory conditions and in the course of some leukemias and lymphomas.
Product Datasheets
Citations for Human 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.
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Citations: Showing 1 - 4
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Late expression of granulysin by microbicidal CD4+ T cells requires PI3K- and STAT5-dependent expression of IL-2Rbeta that is defective in HIV-infected patients.
Authors: Zheng CF, Jones GJ, Shi M, Wiseman JC, Marr KJ, Berenger BM, Huston SM, Gill MJ, Krensky AM, Kubes P, Mody CH
J. Immunol., 2008;180(11):7221-9.
Species: Human
Sample Types: Cell Lysates
Applications: Western Blot -
Identification of their epitope reveals the structural basis for the mechanism of action of the immunosuppressive antibodies basiliximab and daclizumab.
Authors: Binder M, Vogtle FN, Michelfelder S, Muller F, Illerhaus G, Sundararajan S, Mertelsmann R, Trepel M
Cancer Res., 2007;67(8):3518-23.
Species: Human
Sample Types: Whole Cells
Applications: Flow Cytometry -
Interleukin-2alpha receptor in membrane lipid rafts.
Authors: Li QR, Ma J, Wang H, Li JS
Transplant. Proc., 2005;37(5):2395-7.
Species: Human
Sample Types: Cell Lysates
Applications: Western Blot -
Intracellular trafficking of Gag and Env proteins and their interactions modulate pseudotyping of retroviruses.
Authors: Sandrin V, Muriaux D, Darlix JL, Cosset FL
J. Virol., 2004;78(13):7153-64.
Species: Human
Sample Types: Cell Lysates
Applications: Western Blot
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This antibody served as both a capture and detection antibody in a sandwich ELISA developed to measure human serum and plasma samples.
