Human PD-L1 ELISA Kit
Validation Data Gallery
Product Information
KE00074 is a solid phase sandwich Enzyme Linked-Immuno-Sorbent Assay (Sandwich ELISA). The PD-L1 ELISA kit is to be used to detect and quantify protein levels of endogenous PD-L1. The assay recognizes human PD-L1. An antibody specific for PD-L1 has been pre-coated onto the microwells. The PD-L1 protein in samples is captured by the coated antibody after incubation. Following extensive washing, another antibody specific for PD-L1 is added to detect the captured PD-L1 protein. For signal development, horseradish peroxidase (HRP)-conjugated antibody is added, followed by Tetramethyl-benzidine (TMB) reagent. Solution containing sulfuric acid is used to stop color development and the color intensity which is proportional to the quantity of bound protein is measurable at 450 nm with the correction wavelength set at 630 nm.
| Product name | Human PD-L1 ELISA Kit |
| Tests | 1 X 96 well plate |
| Sample type | Serum, Plasma, Cell culture supernatants, Cell lysates 备注：对未验证样本，我们提供技术支持和售后保障。 |
| Assay type | Sandwich |
| Sensitivity | 0.04 ng/mL |
| Range | 0.156-10 ng/mL |
| Reactivity | Human |
| Tested applications | Sandwich ELISA |
| Gene ID (NCBI) | 29126 |
Recovery
| Sample Type | Average | Range |
|---|---|---|
| Human plasma | 94% | 74%-125% |
| Cell culture supernatants | 105% | 87%-127% |
| Cell lysates | 100% | 74%-126% |
IntraAssay
| Sample | n | mean ( ng/mL) | SD | CV% |
|---|---|---|---|---|
| 1 | 20 | 8.26 | 0.64 | 7.8 |
| 2 | 20 | 2.02 | 0.14 | 6.8 |
| 3 | 20 | 0.49 | 0.02 | 4.6 |
InterAssay
| Sample | n | mean ( ng/mL) | SD | CV% |
|---|---|---|---|---|
| 1 | 24 | 7.43 | 0.38 | 5.1 |
| 2 | 24 | 1.90 | 0.12 | 6.1 |
| 3 | 24 | 0.47 | 0.03 | 7.0 |
Background Information
PD-L1 (programmed cell death ligand 1, also known as CD274 or B7-H1) is a 290 aa type I transmembrane protein. PD-L1 is expressed constitutively on T cells, B cells, DCs, macrophages, mesenchymal stem cells and cultured bone marrow-derived mast cells. In addition, PD-L1 is also expressed on many nonhematopoietic cell types, including vascular endothelial cells, epithelial cells, muscle cells, hepatocytes, pancreatic islet cells, astrocytes in the brain, placental syncytiotrophoblasts, and cells in cornea, iris-ciliary body and retina of eye. PD-L1 is frequently upregulated in a wide variety of solid tumors, including melanoma, ovarian, lung, glioblastoma, breast, and pancreatic cancers. PD-L1 and PD-L2 are two ligands of PD-1. Engagement of PD-1 by PD-L1 or PD-L2 transduces a signal that inhibits T-cell proliferation, cytokine production, and cytolytic function. It is critical for the regulation of T cell function during tolerance, autoimmunity and infection. Besides the membrane-bound form, PD-L1 can also exist as a soluble form (sPD-L1) generated either by proteolytic cleavage of membrane-bound form or by translation of alternative spliced mRNA.
Properties
| Storage Instructions | All the reagents are stored at 2-8℃ for 6 months or -20℃ for 12 months. Refer to the protocol for further storage instructions. |
| Synonyms | CD274, B7 H1, B7-H1, hPD-L1, PD L1 |
FAQ
1、我的样本稀释液有限，如何处理稀释倍数较大的样本？
我们建议您对样本进行梯度稀释。例如，人血清样本需要1000000倍稀释时，您可以分3个梯度，每个梯度100倍，进行稀释：
第一步：取2 uL人血清样本，加入198 uL样本稀释液，混匀得到100倍稀释的人血清样本
第二步：取2uL 100倍稀释的人血清样本+ 198 uL样本稀释液进行稀释，混匀得到10000倍稀释的人血清样本
第三步：取2uL 10000倍稀释的人血清样本+ 198 uL样本稀释液进行稀释，混匀得到1000000倍稀释的人血清样本。
如果样本需要进一步稀释，您可以使用更多梯度。除了我们推荐的样本稀释液，不建议您使用其他溶液或者水稀释。如果您的样本稀释液仍然不足，请联系我们的客服为您提供更多样本稀释液。
Publications
| Species | Sample Type | Title |
|---|---|---|
Crit Care Lymphocyte subset expression and serum concentrations of PD-1/PD-L1 in sepsis - pilot study. | ||
Lung Cancer Chemotherapy-induced PDL-1 expression in cancer-associated fibroblasts promotes chemoresistance in NSCLC | ||
Microorganisms Epstein-Barr Virus LMP1 Induces Soluble PD-L1 in Nasopharyngeal Carcinoma. | ||
Clin Exp Immunol CMTM6: increased circulating level and up-regulated expression in labial salivary glands in patients with primary Sjogren's syndrome. | ||
Invest New Drugs A novel bivalent anti-c-MET/PD-1 bispecific antibody exhibits potent cytotoxicity against c-MET/PD-L1-positive colorectal cancer | ||
Am J Cancer Res Effects of liposomal bupivacaine for erector spinae plane block on perioperative immune function and analgesia in thoracoscopic lung cancer surgery |
