PD-L1/CD274 (C-terminal) Polyklonaler Antikörper

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• KD/KO Validated

PD-L1/CD274 (C-terminal) Polyklonal Antikörper für IHC

Wirt / Isotyp

Kaninchen / IgG

Getestete Reaktivität

human, Maus, Ratte

Anwendung

IHC

Konjugation

Biotin

Kat-Nr. : Biotin-28076

Synonyme

B7 H, B7 H1, B7 homolog 1, B7H1, CD274, CD274 molecule, PD L1, PDCD1 ligand 1, PDCD1L1, PDCD1LG1, PDL1, Programmed death ligand 1

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Galerie der Validierungsdaten

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  IHC staining of human tonsillitis using Biotin-28076

  Immunohistochemical analysis of paraffin-embedded human tonsillitis tissue slide using Biotin-28076 (PD-L1/CD274 (C-terminal) antibody) at dilution of 1:200 (under 10x lens). Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0).

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  IHC staining of human tonsillitis using Biotin-28076

  Immunohistochemical analysis of paraffin-embedded human tonsillitis tissue slide using Biotin-28076 (PD-L1/CD274 (C-terminal) antibody) at dilution of 1:200 (under 40x lens). Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0).

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  IHC staining of human placenta using Biotin-28076

  Immunohistochemical analysis of paraffin-embedded human placenta tissue slide using Biotin-28076 (PD-L1/CD274 (C-terminal) antibody) at dilution of 1:200 (under 10x lens). Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0).

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  IHC staining of human placenta using Biotin-28076

  Immunohistochemical analysis of paraffin-embedded human placenta tissue slide using Biotin-28076 (PD-L1/CD274 (C-terminal) antibody) at dilution of 1:200 (under 40x lens). Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0).

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Geprüfte Anwendungen

• Erfolgreiche Detektion in IHC: humanes Tonsillitisgewebe, humanes Plazenta-Gewebe; Hinweis: Antigendemaskierung mit TE-Puffer pH 9,0 empfohlen. (*) Wahlweise kann die Antigendemaskierung auch mit Citratpuffer pH 6,0 erfolgen.

Empfohlene Verdünnung

• Immunhistochemie (IHC): IHC : 1:50-1:500

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

Produktinformation

Biotin-28076 bindet in IHC PD-L1/CD274 (C-terminal) und zeigt Reaktivität mit human, Maus, Ratten

• Getestete Reaktivität: human, Maus, Ratte
• Wirt / Isotyp: Kaninchen / IgG
• Klonalität: Polyklonal
• Typ: Antikörper
• Immunogen: PD-L1/CD274 (C-terminal) fusion protein Ag27557
• Vollständiger Name: CD274 molecule
• Berechnetes Molekulargewicht: 290 aa, 33 kDa
• Beobachtetes Molekulargewicht: 45-50 kDa
• GenBank-Zugangsnummer: BC074984
• Gene symbol: CD274
• Gene ID (NCBI): 29126
• Konjugation: Biotin
• Form: Liquid
• Reinigungsmethode: Antigen-Affinitätsreinigung
• Lagerungspuffer: BS mit 50% Glyzerin, 0,05% Proclin300, 0,5% BSA, pH 7,3.
• Lagerungsbedingungen: Bei -20°C lagern. Vor Licht schützen. Nach dem Versand ein Jahr stabil. Aliquotieren ist bei -20^oC Lagerung nicht notwendig. 20ul Größen enthalten 0,1% BSA.

Hintergrundinformationen

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).