Mouse B7-H1/PD-L1 Alexa Fluor® 594-conjugated Antibody

    
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  • Species Reactivity
    Mouse
  • Specificity
    Detects mouse B7-H1/PD-L1 in direct ELISAs. Stains mouse B7-H1/PD-L1 transfectants but not irrelevant transfectants in flow cytometry.
  • Source
    Monoclonal Rat IgG2A Clone # 929903
  • Purification
    Protein A or G purified from hybridoma culture supernatant
  • Immunogen
    Mouse myeloma cell line NS0-derived recombinant mouse B7-H1/PD-L1
    Met1-Thr239
    Accession # Q9EP73
  • Formulation
    Supplied in a saline solution containing BSA and Sodium Azide.
  • Label
    Alexa Fluor 594
Product Datasheets

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Applications
  •  
    Recommended
    Concentration
    Sample
  • Flow Cytometry
    5 µL/106 cells
    See below
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Data Example
Detection of B7‑H1/PD‑L1 in HEK293 Human Cell Line Transfected with Mouse B7-H1 and eGFP by Flow Cytometry. HEK293 human embryonic kidney cell line transfected with either (A) mouse B7-H1 or (B) irrelevant transfectants and eGFP was stained with Rat Anti-Mouse B7‑H1/PD‑L1 Alexa Fluor® 594‑conjugated Monoclonal Antibody (Catalog # FAB9078T). Quadrant markers were set based on control antibody staining (Catalog # IC006T). View our protocol for Staining Membrane-associated Proteins.
Preparation and Storage
  • Shipping
    The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
  • Stability & Storage
    Protect from light. Do not freeze.
    • 12 months from date of receipt, 2 to 8 °C as supplied.
Background: PD-L1/B7-H1

Mouse B7 homolog 1(B7-H1), also called programmed death ligand 1 (PD-L1) and programmed cell death 1 ligand 1 (PDCD1L1), is a member of the B7 family of proteins that provide signals for regulating T-cell activation and tolerance (1‑4). Other family members include B7-1, B7-2, B7-H2, B7-H3 and PD-L2. B7 proteins are immunoglobulin (Ig) superfamily members with extracellular Ig-V-like and Ig-C-like domains and a short cytoplasmic region. Among the family members, they share from 20‑40% amino acid (aa) sequence identity. The cloned mouse B7-H1/PD-L1 cDNA encodes a 290 aa type I membrane precursor protein with a putative 18 aa signal peptide, a 220 aa extracellular region containing one V-like and one C-like Ig domain, a 22 aa transmembrane region, and a 30 aa cytoplasmic domain. Mouse and human B7-H1/PD-L1 share approximately 70% aa sequence identity. B7-H1/PD-L1 is one of two ligands for programmed death-1 (PD-1), a member of the CD28 family of immunoreceptors. The other identified ligand is PD-L2. Mouse B7-H1/PD-L1 and PD-L2 share approximately 34% aa sequence identity and have similar functions. B7-H1/PD-L1 is constitutively expressed in various lymphoid and non-lymphoid organs including placenta, heart, pancreas, lung, liver, and endothelium (1‑4). The expression of B7-H1/PD-L1 is detected on B cells, T cells, monocytes, dendritic cells and thymic epithelial cells. IFN-gamma treatment induces B7-H1/PD-L1 expression in monocytes, dendritic cells, and endothelial cells. B7-H1/PD-L1 expression is also upregulated in a variety of tumor cell lines. On previously activated T cells, B7-H1/PD-L1 interaction with PD-1 inhibits TCR-mediated proliferation and cytokine production, suggesting an inhibitory role in regulating immune responses. In contrast, a costimulatory function for the PD-1 ligands on resting T cells has also been reported (1‑4).

  • References:
    1. Tamura, H. et al. (2001) Blood 97:1809.
    2. Freeman, G. et al. (2000) J. Exp. Med. 192:1027.
    3. Sharpe, A.H. and G. J. Freeman (2002) Nat. Rev. Immunol. 2:116.
    4. Coyle, A. and J. Gutierrez-Ramos (2001) Nat. Immunol. 2:203.
  • Long Name:
    B7 Homolog 1
  • Entrez Gene IDs:
    29126 (Human); 60533 (Mouse); 499342 (Rat); 484186 (Canine); 102145573 (Cynomolgus Monkey)
  • Alternate Names:
    B7-H; B7H1; B7-H1; B7H1PDCD1L1; CD274 antigenMGC142294; CD274 molecule; CD274; PDCD1L1; PDCD1LG1; PDCD1LG1MGC142296; PDL1; PD-L1; PD-L1B7 homolog 1; PDL1PDCD1 ligand 1; programmed cell death 1 ligand 1; Programmed death ligand 1
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Isotype Controls
Description Application Cat# Citations Images  

Rat IgG2A Alexa Fluor® 594-conjugated Antibody

Ctrl IC006T
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Staining Reagents
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Flow Cytometry Staining Buffer (1X)

Flow FC001 7
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Flow Cytometry Mouse Lyse Buffer (10X)

Flow FC003 5
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Flow Cytometry Human Lyse Buffer (10X)

Flow FC002 1
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