计算溶液所需的质量、体积或浓度。
BioReagent 级 ,适用于对基线干扰要求严格的色谱和分析工作流程。
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在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
干扰素(IFN-γ,又称 II 型干扰素或免疫干扰素)是一种主要由T淋巴细胞和自然杀伤细胞产生的细胞因子。该蛋白与IFN-β或各种IFN-α家族蛋白没有明显的同源性。成熟的 IFN-γ以非共价连接的同质体存在。人类IFN-γ具有高度的物种特异性,只在人类和灵长类细胞中具有生物活性。IFN-γ最初是基于其抗病毒活性而被定性的。该蛋白还发挥抗增殖、免疫调节和促进炎症的活性,因此在宿主防御机制中很重要。IFN-γ诱导细胞因子的产生,上调 I 类和 II 类 MHC 抗原、Fc 受体和白细胞粘附分子的表达。它调节巨噬细胞的效应功能,影响异型转换并增强 B 细胞分泌免疫球蛋白的能力。 本试剂盒采用双抗体夹心法酶联免疫吸附试验(ELISA)。往预先包被有人γ干扰素(IFN-γ)捕获抗体的微孔中,依次加入样本、标准品、生物素标记的检测抗体,HRP酶结合物,中间经过温育和洗涤,用底物TMB显色,TMB在过氧化物酶(HRP)的催化下转化成蓝色,并在酸的作用下转化成最终的黄色。颜色的深浅和样本中的人γ干扰素(IFN-γ)呈正相关。用酶标仪在450nm 波长下测定吸光度(OD值),计算样本浓度。
This kit employs the sandwich enzyme-linked immunosorbent assay (ELISA) principle. Microplate wells are pre-coated with a capture antibody specific to Human IFN-γ. Following this, the sample, standards, a biotin-conjugated detection antibody, and an HRP (horseradish peroxidase)-labeled conjugate are added sequentially to the wells. The procedure involves incubation and wash steps between each addition. For detection, TMB substrate is used. TMB yields a blue color in the presence of the peroxidase activity of HRP. The reaction is then stopped with an acid solution, which converts the blue color to a final yellow color. The intensity of the yellow color is directly proportional to the concentration of Human IFN-γ present in the sample. The optical density (OD) is measured at a wavelength of 450 nm using a microplate reader. Finally, the concentration of the target analyte in the sample is calculated based on the standard curve generated from the standards.