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概要
Interleukin 4 (IL-4) is a type I cytokine produced by Th2 T cells, NK T cells, γ/δ T cells, eosinophils, mast cells, and activated basophils. IL-4 receptors are present on a number of cells, including hematopoietic, endothelial, epithelial, muscle, and brain tissues. IL-4 receptor engagement initiates signaling through the JAK/STAT pathway, and leads to the activation of PI3K and Ras/MAPK pathways (Nelms et al.). IL-4 plays a key role in immunoglobulin class switching in B cells and in regulating the differentiation of naïve T cells into T helper 2 (Th2) cells, while inhibiting Th1 differentiation. IL-4 acts together with tumor necrosis factor to stimulate expression of adhesion molecules on vascular endothelial cells and to downregulate expression of E-selectin, thus recruiting T cells and eosinophils to the site of inflammation (Nelms et al.).
技术资料
| Document Type | 产品名称 | Catalog # | Lot # | 语言 |
|---|---|---|---|---|
| Product Information Sheet | Mouse Recombinant IL-4 | 78047, 78047.1, 78047.2 | All | English |
| Safety Data Sheet | Mouse Recombinant IL-4 | 78047, 78047.1, 78047.2 | All | English |
数据及文献
Data
(A) The biological activity of Mouse Recombinant IL-4 was tested by its ability to promote the proliferation of HT-2 cells. Cell proliferation
was measured after 67 hours of culture using a fluorometric assay method. The EC50 is defined as the effective concentration of the
growth factor at which cell proliferation is at 50% of maximum. The EC50 in the above example is 3.8 - 5.7 ng/mL.
(B) 1 μg of Mouse Recombinant IL-4 was resolved with SDS-PAGE under reducing (+) and non-reducing (-) conditions and visualized by
Coomassie Blue staining. Mouse Recombinant IL-4 has a predicted molecular mass of 13.7 kDa.
