Product Sheet CP10324
Description
BACKGROUND Interleukin-2 (IL-2) was identified based on its potent T-cell growth-factor activity and is traditionally implicated in the agonistic stimulation of immune responses. As IL-2 is mainly produced by activated T cells and, in particular, by activated CD4+ T-helper cells, at least part of their ‘helper\' function for CD8+ T cells was attributed to IL-2.1 With respect to immune-enhancing functions, IL-2 has a role in supporting proliferation and survival of T cells, and differentiation of naive T cells into effector and memory cells. Evidence indicates that IL-2 is also an important factor that allows the generation of memory T cells, which are able to undergo secondary expansion when they re-encounter an antigen. Furthermore, IL-2 has the ability to overcome the proliferation block of anergic cells generated in vitro and, in certain situations, also in vivo.2 In opposition to these immune-enhancing functions, IL-2 can promote activation-induced cell death (AICD) of T cells and was therefore implicated in downregulating antigen-specific T-cell numbers after the clonal expansion phase of an immune response.3 Moreover, IL-2 also has anti-inflammatory properties, as do other pro-inflammatory cytokines, such as interferon-γ (IFNγ). In a similar process to IFNγ—which exerts anti-inflammatory properties by suppressing T-helper 17 cells—IL-2 can constrain IL-17 production, and exert its immunosuppressive function by stimulating the generation and homeostasis of CD4+ CD25+ Foxp3+ regulatory T cells (TREG). Indeed, IL-2 is a non-redundant factor for the in vivo homeostasis of TREG, which constitute a fundamental part of immunological self-tolerance and immune regulation.4
REFERENCES
1. Malek, T.R.: Annu Rev Immunol. 26:453-79, 2008
2. Waldmann, T.A.: Nat Rev Immunol. 6:595-601, 2006
3. Bachmann, M.F. & Oxenius, A.: EMBO Rep. 8:1142-8, 2007
4. Turka, L.A. & Walsh, P.T.: Front Biosci. 13:1440-6, 2008
2. Waldmann, T.A.: Nat Rev Immunol. 6:595-601, 2006
3. Bachmann, M.F. & Oxenius, A.: EMBO Rep. 8:1142-8, 2007
4. Turka, L.A. & Walsh, P.T.: Front Biosci. 13:1440-6, 2008
Products are for research use only. They are not intended for human, animal, or diagnostic applications.
(Click to Enlarge) Western Blot detection of IL-2 proteins in E. coli cell lysate containing recombinant human IL-2 proteins using IL-2 Antibody.
Details
Cat.No.: | CP10324 |
Antigen: | Raised against recombinant human IL-2 fragments expressed in E. coli. |
Isotype: | Mouse IgG1 |
Species & predicted species cross- reactivity ( ): | Human, Mouse, Rat |
Applications & Suggested starting dilutions:* | WB 1:1000 IP 1:50 IHC n/d ICC n/d FACS n/d |
Predicted Molecular Weight of protein: | 18 kDa |
Specificity/Sensitivity: | Detects endogenous IL-2 proteins without cross-reactivity with other family members. |
Storage: | Store at -20°C, 4°C for frequent use. Avoid repeated freeze-thaw cycles. |
*Optimal working dilutions must be determined by end user.
Products
| Product | Size | CAT.# | Price | Quantity |
|---|---|---|---|---|
| Mouse Interleukin-2 Antibody: Mouse Interleukin-2 Antibody | Size: 100 ul | CAT.#: CP10324 | Price: $302.00 |