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Safety Data Sheet (SDS) PE Anti-mouse CD25 Antibody     Product Data Sheet (PDF)    
PE Anti-mouse CD25 Antibody
1110035 50 µg $50.00       
1110040 200 µg $195.00       
Clone: PC61
Isotype: Rat IgG1, λ
Reactivity: Mouse
Immunogen: IL-2-dependent cytolytic mouse T-cell clone B6.1
Formulation: Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
Preparation: The antibody was purified by affinity chromatography, and conjugated with PE under optimal conditions. The solution is free of unconjugated PE and unconjugated antibody.
Concentration: 0.2 mg/ml
Storage & Handling: The CD25 antibody solution should be stored undiluted between 2°C and 8°C, and protected from prolonged exposure to light. Do not freeze.

FC - Quality tested

Application Notes:

Additional reported applications (for the relevant formats) include: immunoprecipitation1,2, in vitro blocking of IL-2 binding to low- and high-affinity receptors1-4, growth inhibition of IL-2-dependent T-cell lines1-4, in vivo depletion of CD25+CD4+ Treg cells5-8,10, and immunohistochemical staining of acetone-fixed frozen sections2. PC61 antibody recognizes a different epitope than 3C7 antibody .

Recommended Usage:

Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is ≤1.0 µg per million cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for each application.

Application References:

1. Lowenthal JW, et al. 1985. Nature 315:669. (IP, Block)
2. Ceredig R, et al. 1985. Nature 314:98. (IP, IHC, Block)
3. Lowenthal JW, et al. 1985. J. Immunol. 135:3988. (Block)
4. Moreau JL, et al. 1987. Eur. J. Immunol. 17:929. (Block)
5. Takahashi T, et al. 2000. J. Exp. Med. 192:303. (Deplete)
6. Onizuka S, et al. 1999. Cancer Res. 59:3128. (Deplete)
7. Lei TC, et al. 2005. Blood 105:4865. (Deplete)
8. Pasare C, et al. 2004. Immunity 21:733. (Deplete)
9. León-Ponte M, et al. 2007. Blood 109:3139.
10. Cao OW, et al. 2007. Blood doi:10.1182/blood-2007-02-073304. (Deplete)
11. Benson MJ, et al. 2007. J. Exp. Med. doi:10.1084/jem.20070719.
12. Madireddi S, et al. 2014. J Exp Med. 211:1433. PubMed
13. White CE, et al. 2015. J Immunol. 194:697. PubMed
14. Singh K, et al. 2015. Sci Rep. 14:7767. PubMed
15. Lu X, et al. 2015. J Immunol. 194:2011. PubMed
16. Charlton JJ, et al. 2015. PLoS One. 10:119200. PubMed

Con A-stimulated (3 days) BALB/c

Con A-stimulated (3 days) BALB/c mouse splenocytes stained with PC61 PE


CD25 is a 55 kD glycoprotein also known as the low affinity IL-2Rα, Ly-43, p55, or Tac. It is expressed on activated T and B cells, thymocyte subsets, pre-B cells, and T regulatory cells. In association with CD122 (IL-2Rβ) and CD132 (common γ chain), CD25 forms the high affinity signaling IL-2 receptor.

Other Names: IL-2Rα, Ly-43, p55, Tac
Structure: Forms high affinity IL-2R with IL-2Rβ (CD122) and IL-2Rγ (CD132), 55 kD
Distribution: Activated T cells and B cells, thymocyte subset, pre-B cells, T regulatory cells
Function: IL-2 receptor
Ligand Receptor: IL-2
Antigen References:

1. Taniguchi T, et al. 1993. Cell 73:5.
2. Waldmann TA. 1991. J. Biol. Chem. 266:2681.
3. Read S, et al. 2000. J. Exp. Med. 192:295.
4. Lowenthal JW, et al. 1985. J. Immunol. 135:3988.