PD-L1/CD274 Recombinant antibody
PD-L1/CD274 Uni-rAbTM Recombinant Antibody for WB, IHC, IF-P, ELISA
Host / Isotype
Rabbit / IgG
Reactivity
human
Applications
WB, IHC, IF-P, ELISA
Conjugate
Unconjugated
CloneNo.
2H4
验证数据展示
经过测试的应用
Positive WB detected in | MDA-MB-231 cells, U-87 MG cells, human placenta tissue |
Positive IHC detected in | human tonsillitis tissue, human placenta tissue Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0 |
Positive IF-P detected in | human tonsillitis tissue |
推荐稀释比
Application | Dilution |
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Western Blot (WB) | WB : 1:1000-1:4000 |
Immunohistochemistry (IHC) | IHC : 1:200-1:800 |
Immunofluorescence (IF)-P | IF-P : 1:200-1:800 |
It is recommended that this reagent should be titrated in each testing system to obtain optimal results. | |
Sample-dependent, Check data in validation data gallery. |
产品信息
82719-15-RR targets PD-L1/CD274 in WB, IHC, IF-P, ELISA applications and shows reactivity with human samples.
Tested Applications | WB, IHC, IF-P, ELISA Application Description |
Tested Reactivity | human |
Immunogen | PD-L1/CD274 fusion protein Ag12432 种属同源性预测 |
Host / Isotype | Rabbit / IgG |
Class | Recombinant |
Type | Antibody |
Full Name | CD274 molecule |
Synonyms | CD274, PD-L1, PD L1, hPD-L1, B7-H1 |
Calculated Molecular Weight | 290 aa, 33 kDa |
Observed Molecular Weight | 50 kDa |
GenBank Accession Number | BC074984 |
Gene Symbol | PD-L1 |
Gene ID (NCBI) | 29126 |
Conjugate | Unconjugated |
Form | Liquid |
Purification Method | Protein A purification |
UNIPROT ID | Q9NZQ7 |
Storage Buffer | PBS with 0.02% sodium azide and 50% glycerol pH 7.3. |
Storage Conditions | Store at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. |
背景介绍
PD-L1, also known as CD274 or B7H1, stands for programmed cell death ligand 1. It is a type I transmembrane protein that is thought to repress immune responses by binding to its receptor (PD1), thus inhibiting T-cell activation, proliferation, and cytokine production. It contains V-like and C-like immunoglobulin domains. PD-L1 expression is regulated by various cytokines, such as TNF-α or LPS (ISSN: 1848-7718). Increased expression of this protein in certain types of cancers, e.g., renal cell carcinoma or colon cancer, correlates with poor prognosis.
What is the molecular weight of PD-L1?
Depending on the isoform, the calculated molecular weight of the protein varies between 20 and 33 kDa (176-290 aa).
What are the isoforms of PD-L1?
According to NCBI, three different isoforms have been identified. There are significant differences in the untranslated and protein coding regions.
What is the subcellular localization and tissue specificity of PD-L1?
It is predicted to localize in the plasma membrane of various cell types, with a particularly high expression in placental trophoblast and subsets of immune cells. High levels of PD-L1 protein have also been detected in lung and colon tissues.
What is the function of PD-L1 in immune responses?
PD-L1 is critical for the induction and maintenance of immune self-tolerance during infection or inflammation in normal tissues. The interaction of PD-L1 and its receptors is responsible for preventing auto-immune phenotypes and balancing the overall immune response in situations such as pregnancy or tissue allografts. The interaction between PD-L1 and PD-1 or B7.1 starts an inhibitory signaling cascade, which results in the decreased proliferation of antigen-specific T-cells and increased survival of regulatory T-cells (PMID: 15240681).
How can PD-L1's implication in cancer be used as a drug target?
In certain tumors, high expression of PD-L1 serves as a stop-sign to inhibit the recognition of cancer cells by T-cells (PMID: 23087408). The interaction between PD-L1 and its receptors (PD1 and B7.1) is a mechanism for the tumor to evade the host immune response (PMID: 29357948). Several mAbs have been developed to target that interaction and thus prevent the inactivation of cytotoxic T-cells by the tumor (PMIDs: 23890059, 18173375).
实验方案
Product Specific Protocols | |
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WB protocol for PD-L1/CD274 antibody 82719-15-RR | Download protocol |
IHC protocol for PD-L1/CD274 antibody 82719-15-RR | Download protocol |
IF protocol for PD-L1/CD274 antibody 82719-15-RR | Download protocol |
Standard Protocols | |
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Click here to view our Standard Protocols |