Anti-CD25 [2E4]

Absolute Antibody

Anti-CD25 [2E4]

7

2E4 recognizes mouse CD25. This epitope is distinct from the IL-2 binding site and does not block binding of IL-2 to CD25. This antibody binds the same or overlapping epitope as 7D4 (Ab02216) but different than Ab01107. Murine CD25 is a 55 kDa interleukin

2E4 is a non-IL-2 blocking anti-CD25 antibody. The variable fragment (Fv) of this antibody conjugated to a 38-kDa portion of Pseudomonas exotoxin A exhibited exceptional ability to induce tumor rejection and lasting antitumor immunitiy in mice making it a promising canditate in the immunotherapy research and developemnt (Onda et al., 2019; pmid: 30760587). This 2E4 Fv-based CD25-specific recombinant immunotoxin (RIT) was injected into three different mouse tumor models and brought about complete regressions of the majority of them leadinig, in many cases, to immunity against tumors reinjections and cross-tumor type immunity (Onda et al., 2019; pmid: 30760587). Finally, it was demonstrated that this immunotoxin (RIT) caused significant depletion of regulatory T cells (Tregs) in the tumor environment but, importantly, not in the spleen; at the same time, the number of effector, cytotoxic CD8 cells in the tumor increased what would suggest the possible antitumour mechanism of this immunotoxin (Onda et al., 2019; pmid: 30760587). Additionally, 2E4 can be used in flow cytometric analyses; for instance, it has been used to perform phenotyping of lymphocytes as a part of a wider panel of antibodies (Alexander et al., 2008; pmid: 18824594).

Flow Cytometry, Other Application

FC; depletion

Research Use Only

Monoclonal

2E4

Il2ra

interleukin 2 receptor, alpha chain

CD25; I; IL-2 receptor subunit alpha; Il2r; IL-2R alpha chain; IL-2R subunit alpha; IL-2-RA; IL2-RA; interleukin-2 receptor subunit alpha; Ly-4; Ly-43; p55 chain

Rabbit

IgG

Interleukin-2 receptor subunit alpha

This chimeric rabbit antibody was made using the variable domain sequences of the original Mouse IgG1 format, for improved compatibility with existing reagents, assays and techniques.

Mouse

Mouse

The original version of this antibody was raised to recognize mouse CD25.

-20°C,2°C to 8°C

12352203