Storage: Store at 4°C valid for 12 months or -20°C valid for long term storage, avoid freeze / thaw cycles.
Abbreviation: IL-2
Target Synonym: IL2,IL-2,TCGF,lymphokine,Aldesleukin,IL-2lymphokine,interleukin-2,Proleukin,interleukin 2,involved in regulation of T-cell clonal expansion,T cell growth factor,T-cell growth factor,IL 2,IL2,Interleukin 2,interleukin2,Involved in regulation of T cell clonal expansion,Lymphokine,POIL2,T Cell Growth Factor,TCGF
Background: Interleukin-2 (IL-2) is a O-glycosylated, four alpha -helix bundle cytokine that has potent stimulatory activity for antigen-activated T cells. It is expressed by CD4+ and CD8+ T cells, gamma δ T cells, B cells, dendritic cells, and eosinophils. Mature human IL-2 shares 56% and 66% aa sequence identity with Mouse and Rat IL-2, respectively. Human and Mouse IL-2 exhibit cross-species activity. The receptor for IL-2 consists of three subunits that are present on the cell surface in varying preformed complexes. The 55 kDa IL-2 R alpha is specific for IL-2 and binds with low affinity. The 75 kDa IL-2 R beta, which is also a component of the IL-15 receptor, binds IL-2 with intermediate affinity. The 64 kDa common gamma chain gamma c/IL-2 R gamma, which is shared with the receptors for IL-4, -7, -9, -15, and -21, does not independently interact with IL-2. Upon ligand binding, signal transduction is performed by both IL-2 R beta and gamma c. IL-2 is best known for its autocrine and paracrine activity on T cells. It drives resting T cells to prolifeRate and induces IL-2 and IL-2 R alpha synthesis. It contributes to T cell homeostasis by promoting the Fas-induced death of naïve CD4+ T cells but not activated CD4+ memory lymphocytes. IL-2 plays a central role in the expansion and maintenance of regulatory T cells, although it inhibits the development of Th17 polarized cells. Thus, IL-2 may be a key cytokine in the natural suppression of autoimmunity.
Immunogen: Recombinant Human IL-2 protein
Buffer: PBS, pH 7.2. Contains 0.05% proclin 300.
Dilution: FCM 2 μg/mL(1×105-5×105 cells)
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