Cytokine produced by activated CD4-positive helper T-cells and to a lesser extend activated CD8-positive T-cells and natural killer (NK) cells that plays pivotal roles in the immune response and tolerance . Binds to a receptor complex composed of either the high-affinity trimeric IL-2R (IL2RA/CD25, IL2RB/CD122 and IL2RG/CD132) or the low-affinity dimeric IL-2R (IL2RB and IL2RG) . Interaction with the receptor leads to oligomerization and conformation changes in the IL-2R subunits resulting in downstream signaling starting with phosphorylation of JAK1 and JAK3 . In turn, JAK1 and JAK3 phosphorylate the receptor to form a docking site leading to the phosphorylation of several substrates including STAT5 . This process leads to activation of several pathways including STAT, phosphoinositide-3-kinase/PI3K and mitogen-activated protein kinase/MAPK pathways . Functions as a T-cell growth factor and can increase NK-cell cytolytic activity as well . Promotes strong proliferation of activated B-cells and subsequently immunoglobulin production . Plays a pivotal role in regulating the adaptive immune system by controlling the survival and proliferation of regulatory T-cells, which are required for the maintenance of immune tolerance. Moreover, participates in the differentiation and homeostasis of effector T-cell subsets, including Th1, Th2, Th17 as well as memory CD8-positive T-cells. .

P60568

Interleukin-2 (IL-2) (T-cell growth factor) (TCGF) (Aldesleukin),IL2,IL2, IL-2, Aldesleukin, Interleukin-2, TCGF, T-cell growth factor

Human

FC,ELISA

FC 1:50-1:200
ELISA 1:5000-1:20000

18kD

APC

Mouse

Monoclonal

SA616

IgG2a

0.01M PBS, pH 7.4, 0.2% BSA, 0.05% Proclin 300.

0.5 mg/ml

Store at 4℃ for 12 months. Protect from light. Do not freeze.