产品号 #78021_C
干扰素-γ
干扰素-γ (IFN-γ),也称为II型干扰素,由 T 细胞和 NK 细胞产生,树突状细胞和巨噬细胞也产生少量 IFN-γ。IFN-γ 受感染后分泌的 IL-12 和 IL-18 等细胞因子控制(Schroder et al.)。IFN-γ 与受体复合物结合,并通过 JAK/STAT 通路启动信号转导;最终导致许多基因的转录和激活,这些基因控制着多种免疫功能(De Weerd and Nguyen; Krause et al.)。IFN-γ通过促进微生物效应功能的激活,例如活性氧、NO 中间体、补体的产生等,来刺激巨噬细胞、NK 细胞和中性粒细胞的抗菌和抗肿瘤活性(Billiau & Matthys)。 IFN-γ 可增强树突状细胞和单核吞噬细胞中 MHC I 类和 II 类分子的表达,并促进树突状细胞产生 IL-12。在 B 细胞中,IFN-γ 可刺激小鼠和人细胞的存活和生长,并使 B 细胞从增殖转向分化。IFN-γ 有利于 Th1 细胞而非 Th2 细胞的发育,并刺激单核细胞分化和功能(Schroder et al.)。
亚型
细胞因子
细胞类型
B 细胞,造血干/祖细胞,肠道细胞,间充质干/祖细胞,T 细胞
种属
小鼠
研究领域
上皮细胞研究,免疫,干细胞生物学
纯度
≥ 95 %
(A) The biological activity of Mouse Recombinant IFN-gamma was measured with L929 cells exposed to the EMC virus in a cytopathic effect (CPE) assay. The EC50 is defined as the effective concentration of the cytokine at which cell survival is at 50% of maximum. The EC50 in the above graph is 0.22 ng/mL. When normalized to an internal standard, the specific activity in the above example is 4.3 x 10^7 units/mg.
(B) 1 μg of Mouse Recombinant IFN-gamma was resolved with SDS-PAGE under reducing (+) and non-reducing (-) conditions and visualized by Coomassie Blue staining. Mouse Recombinant IFN-gamma has a predicted molecular mass of 15.7 kDa.
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Species | Mouse |
---|---|
Purity | ≥ 95% |
免疫磁珠负选不带标记的小鼠CD4+ T细胞
大鼠单克隆IgG2a抗体,抗小鼠CD4
干扰素-γ
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