Mouse PD-L1/B7-H1 Antibody MAB90781-100: R&D Systems

Mouse PD-L1/B7-H1 Antibody

Recombinant Monoclonal Antibody.
(1 Review)
  
  • Species Reactivity
    Mouse
  • Specificity
    Detects mouse PD-L1/B7-H1 in direct ELISAs and Western blots.
  • Source
    Recombinant Monoclonal Rabbit IgG Clone # 2096C
  • Purification
    Protein A or G purified from cell culture supernatant
  • Immunogen
    Mouse myeloma cell line NS0-derived recombinant mouse PD-L1/B7-H1
    Met1-His239
    Accession # Q9EP73
  • Formulation
    Supplied as a solution in PBS containing BSA, Glycerol and Sodium Azide. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • Western Blot
    2 µg/mL
    See below
  • Flow Cytometry
    0.25 µg/106 cells
    See below
  • Immunohistochemistry
    5-25 µg/mL
    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 Examples
Detection of Mouse PD-L1/B7-H1 by Western Blot. Western blot shows lysates of RAW 264.7 mouse monocyte/macrophage cell line and J774A.1 mouse reticulum cell sarcoma macrophage cell line untreated (-) or treated (+) with 10 μg/mL LPS for 4 hours. PVDF membrane was probed with 2 µg/mL of Rabbit Anti-Mouse PD-L1/B7-H1 Monoclonal Antibody (Catalog # MAB90781) followed by HRP-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # HAF008). A specific band was detected for PD-L1/B7-H1 at approximately 50-55 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Detection of PD-L1/B7-H1 in RAW 264.7 Mouse Cell Line by Flow Cytometry. RAW 264.7 mouse monocyte/macrophage cell line either treated with LPS overnight (filled histogram) or untreated (open histogram) was stained with Rabbit Anti-Mouse PD-L1/B7-H1 Monoclonal Antibody (Catalog # MAB90781), followed by Allophycocyanin-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # F0111). View our protocol for Staining Membrane-associated Proteins.
Detection ofPD-L1/B7-H1 in HEK293 Human Cell Line Transfected with Mouse PD-L1/B7-H1 and eGFP by Flow Cytometry. HEK293 human embryonic kidney cell line transfected with either (A) mouse PD-L1/B7-H1 or (B) irrelevant transfectants and eGFP was stained with Rabbit Anti-Mouse PD-L1/B7-H1 Monoclonal Antibody (Catalog # MAB90781) followed by Allophycocyanin-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # F0111). Quadrant markers were set based on control antibody staining (Catalog # MAB1050). View our protocol for Staining Membrane-associated Proteins.
Immunohistochemistry
PD-L1/B7-H1 in Mouse Thymus.
PD-L1/B7-H1 was detected in perfusion fixed frozen sections of mouse thymus using Rabbit Anti-Mouse PD-L1/B7-H1 Monoclonal Antibody (Catalog # MAB90781) at 5 µg/mL for 1 hour at room temperature followed by incubation with the Anti-Rabbit IgG VisUCyte™ HRP Polymer Antibody (Catalog # VC003). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to thymocytes. View our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.
Preparation and Storage
  • Shipping
    The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
  • Stability & Storage
    Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
    • 12 months from date of receipt, -20 to -70 °C, as supplied.
    • 1 month, 2 to 8 °C under sterile conditions after opening.
    • 6 months, -20 to -70 °C under sterile conditions after opening.
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 beenreported (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); 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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Average Rating: 3 (Based on 1 review)

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We have 1 review tested in 1 species: Mouse.
We have 1 review tested in 1 application: Immunocytochemistry/Immunofluorescence.

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Summary

ApplicationImmunocytochemistry/Immunofluorescence
Sample TestedPancreatic cancer tissue
SpeciesMouse

Other Experimental Details

Other Experimental Details1:50 concentration, Overnight incubation

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