PD-L1 Antibody (929903) [Unconjugated]

RAW 264.7 mouse monocyte/macrophage cell line either treated with LPS overnight (filled histogram) or untreated (open historgram) was stained with Rat Anti-Mouse PD-L1/B7-H1 Monoclonal Antibody (Catalog # MAB9078), followed by Allophycocyanin-conjugated Anti-Rat IgG Secondary Antibody (Catalog # F0113). View our protocol for Staining Membrane-associated Proteins.

HEK293 human embryonic kidney cell line transfected with either (A) mouse PD-L1/B7-H1 or (B) irrelevant transfectants and eGFP was stained with and either (A) Rat Anti-Mouse PD-L1/B7-H1 Monoclonal Antibody (Catalog # MAB9078) or (B) Rat IgG2A Isotype Control (Catalog # MAB006) followed by Phycoerythrin-conjugated Anti-Hamster IgG Secondary Antibody .

• Reactivity: Mu
• Applications: Flow, CyTOF-ready
• Clone: 929903
• Clonality: Monoclonal
• Host: Rat
• Conjugate: Unconjugated

PD-L1 Antibody (929903) [Unconjugated] Summary

• Immunogen: Mouse myeloma cell line NS0-derived recombinant mouse PD-L1/B7-H1
  Met1-Thr239
  Accession # Q9EP73
• Specificity: Detects mouse PD-L1/B7-H1 in direct ELISAs. Stains mouse PD-L1/B7-H1 transfectants but not irrelevant transfectants in flow cytometry.
• Source: N/A
• Isotype: IgG2a
• Clonality: Monoclonal
• Host: Rat
• Gene: Cd274
• Purity Statement: Protein A or G purified from hybridoma culture supernatant

Applications/Dilutions

• Dilutions:
  • CyTOF-ready
  • Flow Cytometry 0.25 ug/10^6 cells

Packaging, Storage & Formulations

• 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 reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
• Buffer: Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
• Preservative: No Preservative
• Reconstitution Instructions: Reconstitute at 0.5 mg/mL in sterile PBS.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for PD-L1 Antibody (929903) [Unconjugated]

• Avelumab
• 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

Background

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).

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.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Publications for PD-L1 Antibody (MAB9078)(1)

Publication using MAB9078

• Tanaka, R;Hiramitsu, M;Shimizu, S;Kawashima, S;Sato, A;Iwase, Y; Efficient drug delivery to lymph nodes by intradermal administration and enhancement of anti-tumor effects of immune checkpoint inhibitors Cancer treatment and research communications 2023-07-06 [PMID: 37437382] (IHC, Mouse)

Bioinformatics

• Gene Symbol: Cd274
• Uniprot:
  • Q9EP73()