Il2ra Rat Monoclonal Antibody [Clone ID: PC61.5.3]

Specifications

Product Data
Clone Name	PC61.5.3
Applications	FC, FN, IHC, IP
Recommend Dilution	Flow Cytometry: 0.5 µg/106 cells (See Protoclols for more details). Immunoprecipitation. Functional Assays. Immunohistochemistry on Frozen Sections.
Reactivity	Mouse
Host	Rat
Clonality	Monoclonal
Immunogen	B6.1 CTL cell line. Spleen cells from immunised OFA rats were fused with cells of the P3X63Ag8.653 mouse myeloma cell line.
Specificity	This Monoclonal antibody reacts with the low affinity alpha chain of the interleukin-2 receptor present on activated T and B cells in mice. Clone PC61.5.3 is reported to inhibit IL-2 binding and IL-2 dependent proliferation.
Formulation	PBS State: Low Endotoxin State: Liquid sterile purified IgG fraction Preservative: None
Concentration	lot specific
Purification	Protein G Chromatography
Conjugation	Unconjugated
Storage Condition	Store undiluted at 2-8°C for one month or (in aliquots) at -20°C for longer. Avoid repeated freezing and thawing.
Gene Name	interleukin 2 receptor, alpha chain
Database Link	Entrez Gene 16184 Mouse UniProt ID P01590
Background	CD25 (IL2Ralpha, Tac) is a ligand-binding alpha subunit of interleukin 2 receptor (IL2R). Together with beta and gamma subunit CD25 constitues the high affinity IL2R, whereas CD25 alone serves as the low affinity IL2R. CD25 expression rapidly increases upon T cell activation. The 55 kDa CD25 molecule is enzymatically cleaved and shed from the cell surface as a soluble 45 kDa s-Tac, whose concentration in serum can be used as a marker of T cell activation. Expression of CD25 indicates the neoplastic phenotype of mast cells. CD25+ CD4+ FoxP3+ regulatory cells (Treg cells) play a crucial role in the control of organ-specific autoimmune diseases.
Synonyms	Interleukin-2 receptor alpha chain, IL-2 receptor alpha subunit, IL-2-RA, IL2-RA, p55, TAC antigen
Note	Protocol: Flow Cytometry Analysis: Method: 1. Prepare a cell suspension in media A. For cell preparations, deplete the red blood cell population with Lympholyte®-M cell separation medium. 2. Wash 2 times. 3. Resuspend the cells to a concentration of 2x107 cells/ml in media A. Add 50 μl of this suspension to each tube (each tube will then contain 1x106 cells, representing 1 test). 4. To each tube, add 0.5 µg of AM26037LE-M. 5. Vortex the tubes to ensure thorough mixing of antibody and cells. 6. Incubate the tubes for 30 minutes at 4°C. 7. Wash 2 times at 4°C. 8. Add 100 μl of secondary antibody (FITC Goat anti-rat IgG (H+L)) at 1/500 dilution. 9. Incubate the tubes at 4°C for 30-60 minutes. (It is recommended that the tubes are protected from light since most fluorochromes are light sensitive). 10. Wash 2 times at 4°C in media B. 11. Resuspend the cell pellet in 50 μl ice cold media B. 12. Transfer to suitable tubes for flow cytometric analysis containing 15 μl of propidium iodide at 0.5 mg/ml in PBS. This stains dead cells by intercalating in DNA. Media: A. Phosphate buffered saline (pH 7.2) + 5% normal serum of host species + sodium azide (100 μl of 2M sodium azide in 100 mls). B. Phosphate buffered saline (pH 7.2) + 0.5% Bovine serum albumin + sodium azide (100 μl of 2M sodium azide in 100 mls). Results: Tissue Distribution by Flow Cytometry Analysis: Mouse Strain: BALB/c Cell Concentration: 1x106 cells per tests. Isotypic Control: Rat IgG1 Antibody Concentration Used: 0.5 µg /106 cells. Isotypic Control: Rat IgG1. Cell Source: Percentage of cells stained above control: T Cell Blasts : 91.3% Thymus : 1.1%.
Reference Data

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