Human IL-8 DTSet enzyme-linked immunoassay kit
概述
产品名称
Human IL-8 DTSet enzyme-linked immunoassay kit
产品类型
DTSet Elisa Kit
| pg/ml | O.D. | Average | Corrected | |
|---|---|---|---|---|
| 0.00 | 0.0373 | 0.0398 | 0.0386 | |
| 15.63 | 0.1787 | 0.1737 | 0.1762 | 0.1377 |
| 31.25 | 0.3150 | 0.3089 | 0.3120 | 0.2734 |
| 62.50 | 0.5432 | 0.5618 | 0.5525 | 0.5140 |
| 125.00 | 1.0080 | 1.0100 | 1.0090 | 0.9705 |
| 250.00 | 1.7310 | 1.5760 | 1.6535 | 1.6150 |
| 500.00 | 2.5480 | 2.4510 | 2.4995 | 2.4610 |
| 1000.00 | 3.4340 | 3.1610 | 3.2975 | 3.2590 |
实验类型
夹心酶联免疫吸附测定(Sandwich Elisa)
种属反应性
Human
检测方法
比色法
实验检测时长
120min
标准曲线范围
15.63 pg/ml-1000 pg/ml
标准曲线梯度
7点/3倍
孵育次数
2
可检测样本
可溶性物质的液相样品。例如:血清,血浆,细胞培养上清,组织研磨液等。
加样体积
50 μl
产品特性
- 优化的捕获和检测抗体配对与推荐浓度可节省较长的开发时间
- 提供开发方案以指导进一步的分析优化
- 检测可根据您的特定需求进行定制
- 完整试剂盒的经济替代品
试剂盒组分
- 捕获抗体
- 检测抗体
- 重组标准品
- 与辣根过氧化物酶偶联的链霉亲和素 (Streptavidin-HRP)
所需的其他材料
DTSet辅助试剂盒(5板):包含96孔微孔板、封板膜、显色液、终止溶液、包板缓冲液(PBS)、洗涤缓冲液和检测缓冲液。
上面列出的部件可以单独购买:
- 96孔微孔板板(EP): YOUKE Life, Catalog # DSEP01
- 封板木膜(PS): YOUKE Life, Catalog # DSSF01。
- 包板缓冲液(CB): 137mM NaCl,2.7mM KCl,8.1mM Na2HPO4,1.5mM KH2PO4,pH 7.2-7.4,0.2m过滤。YOUKE Life, Catalog # DSCB01。
- 检测缓冲液 10X(AB): 0.5%BSA,0.05%Tween20,PBS溶液。YOUKE Life, Catalog # DSAB01。
- 封闭液(BB): YOUKE Life, Catalog # DSBB01。
- Washing Solution: 0.05%Tween20,PBS溶液,pH 7.2-7.4。YOUKE Life, Catalog # DSWB01。
- 底物显色液(TMB): TMB。YOUKE Life, Catalog # DSTS01。
- 终止溶液(SS): 0.5mol/ml H2SO4。YOUKE Life, Catalog # DSSS01。
靶点
功能
白细胞介素-8 (IL-8),也称为 IL-8、GCP-1 和 NAP-1,是趋化因子 α 或 CXC 家族的肝素结合 8-9 kDa 成员。至少有 15 个人类 CXC 家族成员都采用 3 个 β 折叠/1 个 α 螺旋结构。大多数 CXC 趋化因子显示 N 末端 Glu-Leu-Arg (ELR) 三肽基序。IL-8 以单体、同型二聚体和异二聚体的形式与 CXCL4/PF4 一起循环。单体被认为是最具生物活性的,而异二聚体可以增强 PF4 活性。IL-8 寡聚化受其与基质和细胞表面糖胺聚糖 (GAG) 的相互作用的调节。成熟的人 IL-8 与犬、猫和猪 IL-8 具有 65-69% 的氨基酸 (aa) 同一性。啮齿动物中没有 IL-8 基因对应物。
▼ IL-8 的多种亚型是通过选择性剪接和差异蛋白水解切割产生的。在人类中,选择性剪接产生一种在 C 端有 11 个 aa 替换的同工型。蛋白水解加工导致 IL-8 的 N 端截短,并且可能是一个细胞特异性事件。例如,成纤维细胞和内皮细胞通过在 Glu21 后裂解 IL-8 产生 1-77 形式,而单核细胞和淋巴细胞通过在 Leu25 后裂解产生 6-77 形式。这些截短形式通常显示生物活性增加,特别是通过 CXCR1 受体。IL-8 还可以在前体的 Arg27 上进行瓜氨酸化,这种修饰可增加其半衰期和诱导白细胞增多的能力。多种细胞分泌 IL-8,包括单核细胞和中性粒细胞、成纤维细胞和角质形成细胞、肥大细胞、内脏平滑肌细胞、树突状细胞、II 型大肺泡细胞和内皮细胞。
IL-8 生物活性通过两个 G 蛋白偶联受体介导,称为 CXCR1/IL-8 RA 和 CXCR2/IL-8 RB。CXCR1 的大小为 45-50 kDa,几乎只由 IL-8 使用。CXCR2 的大小为 35-40 kDa,几乎所有 CXC 趋化因子都使用。CXCR1 和 CXCR2 均组成性地结合成功能性同型二聚体。它们也可以异二聚化,但这些复合物在 IL-8 结合后解离。CXCR2 对低浓度的 IL-8 有反应,主要与趋化性和 MMP-9 释放有关。相比之下,CXCR1 对高浓度的 IL-8 有反应,并与呼吸爆发和磷脂酶 D2 激活有关。因此,CXCR2 连接诱导白细胞粘附到活化的血管内皮并迁移到炎症部位,而 CXCR1 连接引发中性粒细胞抗菌活性。IL-8 还可以与 Serpin A1/alpha-1 抗胰蛋白酶形成复合物,从而阻止 IL-8 与 CXCR1 的相互作用。
除了促炎作用外,IL-8 还参与血管生成以及动脉粥样硬化和癌症的发病机制。它在血管内皮细胞中诱导 VEGF 表达,并作为 EC 生长和血管生成的自分泌因子发挥作用。它在动脉粥样硬化病变中上调,在心肌梗死后血清和脑脊液中升高。在癌症中,IL-8 促进上皮-间质转化以及肿瘤细胞的侵袭和转移。
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