程序性死亡配体 1(PD-L1)酶联免疫吸附试验试剂盒
| 产品描述: | 本试剂盒采用双抗夹心法 ELISA 技术,专为科研场景设计,可定量检测样本中 PD-L1 蛋白浓度,检测范围为 10-1000pg/mL,包含预包被特异性捕获抗体的微孔板、HRP 标记检测抗体及配套试剂,特异性强(与 B7 家族其他成员交叉反应率<1%),适用于细胞裂解液、组织匀浆、肿瘤细胞上清等样本。研究背景中,PD-L1 作为 B7 家族免疫检查点分子,在免疫耐受与免疫抑制中起核心作用,其异常表达与肿瘤微环境免疫逃逸、自身免疫模型耐受失衡相关;机制上,通过胞外 IgV 结构域与 T 细胞表面 PD-1 结合,传递抑制信号(如激活 PI3K/Akt 通路),降低 T 细胞细胞毒性与细胞因子分泌,本试剂盒可捕捉其表达波动以解析免疫调控网络。分子特征体现为含胞外 IgV/IgC 结构域、跨膜区及短胞内域,结构域协同实现配体结合与信号传导;生物学意义在于作为 “免疫耐受调节器”,参与外周免疫耐受维持、肿瘤模型 T 细胞耗竭及感染模型免疫抑制平衡。实用性上,支持肿瘤免疫模型中与 T 细胞功能的关联研究、PD-1/PD-L1 相互作用机制解析及化合物对其表达的干预评估,为免疫检查点调控研究提供可靠工具。 |
| 别名: | 程序性死亡配体 1 B7-H1、CD274 |
| 缩写: | PD-L1 |
| Uniprot No: | Q9NZQ7 |
| 种属: | Mus musculus (Mouse) |
| 样本类型: | serum, plasma, tissue homogenates, cell culture supernates |
| 检测范围: | 100-1000pg/mL |
| 反应时间: | 1-5h |
| 样本体积: | 50-100ul |
| 检测波长: | 450 nm |
| 测定原理: | quantitative |
| 测定方法: | Sandwich |
| 货期: | 3-5 working days |
| 本试剂盒所含 材料: | A micro ELISA plat 8×12 |
| Two vials lyophilized standarde | |
| Concentrated Enzyme-Labeled Detection Antibody (100 x concentrate) 1 x 120 μl | |
| Universal Diluent 2 x 20 ml | |
| Wash Buffer (20 x concentrate) 2 x 10 ml | |
| TMB Substrate 1 x 10 ml | |
| Stop Solution 1 x 60 ml | |
| Four plate sealing film (For 96 wells) | |
| An instruction manua | |
| 精密度: | ntra-assay Precision (Precision within an assay): CV%<8% |
| Three samples of known concentration were tested twenty times on one plate to assess. | |
| Inter-assay Precision (Precision between assays): CV%<10% | |
| Three samples of known concentration were tested in twenty assays to assess. |
| 线性度: | To assess the linearity of the assay, samples were spiked with high concentrations of human ACEⅠ in various matrices and diluted with the Sample Diluent to produce samples with values within the dynamic range of the assay. | ||
| Sample | Serum(n=4) | ||
| 1:200 | Average % | 98 | |
| Range % | 92-105 | ||
| 1:400 | Average % | 92 | |
| Range % | 82-97 | ||
| 1:800 | Average % | 105 | |
| Range % | 95-111 | ||
| 1:1600 | Average % | 85 | |
| Range % | 82-96 | ||
| 回收率: | The recovery of human ACEⅠ spiked to levels throughout the range of the assay in various matrices was evaluated. Samples were diluted prior to assay as directed in the Sample Preparation section. | ||
| Sample Type | Average % Recovery | Range | |
| Serum (n=5) | 92 | 88-98 | |
| EDTA plasma (n=4) | 114 | 102-117 | |
| 标准曲线: | 这些标准曲线仅用于演示。应为每组分析的样品生成标准曲线。 | ||
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| 靶点详情: | 程序性死亡配体 1(PD-L1)是 B7 家族免疫调节分子,为 I 型跨膜蛋白,主要表达于抗原呈递细胞、肿瘤细胞及活化的免疫细胞表面,通过与 T 细胞表面 PD-1 结合介导免疫抑制信号。属于免疫球蛋白超家族,胞外区含 IgV(配体结合核心区)和 IgC 结构域,跨膜区连接胞内域;胞内域含保守的免疫受体酪氨酸抑制基序(ITIM),通过招募磷酸酶(如 SHP-2)传递抑制信号,此结构特征是其介导 T 细胞功能抑制的分子基础。在科研模型中,PD-L1 通过抑制 T 细胞增殖与细胞因子释放参与免疫逃逸,与肿瘤微环境免疫抑制、自身免疫耐受模型密切相关,是解析免疫检查点调控机制的关键分子靶点。 |
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