Human PD-L1/B7-H1 Biotinylated Antibody
Human PD-L1/B7-H1 Biotinylated Antibody Summary
Accession # Q9NZQ7
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.
Preparation and Storage
- 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.
Human B7 homolog 1 (B7-H1), also called programmed cell death 1 ligand 1 (PDCD1L1) and programmed death ligand 1 (PDL1), is a member of the growing B7 family of immune proteins that provide signals for both stimulating and inhibiting T cell activation. Other family members include B7-1, B7-2, B7-H2, PDL2 and B7-H3. B7 proteins are members of the immunoglobulin (Ig) superfamily, their extracellular domains contain 2 Ig-like domains and all members have short cytoplasmic domains. Among the family members, they share about 20 - 25% amino acid identity. Human and mouse B7-H1 share approximately 70% amino acid sequence identity. B7-H1 has been identified as one of two ligands for programmed death-1 (PD-1), a member of the CD28 family of immunoreceptors. The B7-H1 gene encodes a 290 amino acid (aa) type I membrane precursor protein with a putative 18 aa signal peptide, a 221 aa extracellular domain, a 21 aa transmembrane region, and a 31 aa cytoplasmic domain. Human B7-H1 is constitutively expressed in several organs such as heart, skeletal muscle, placenta and lung, and in lower amounts in thymus, spleen, kidney and liver. B7-H1 expression is upregulated in a small fraction of activated T and B cells and a much larger fraction of activated monocytes. B7-H1 expression is also induced in dendritic cells and keratinocytes after IFN-gamma stimulation. Interaction of B7-H1 with PD-1 results in inhibition of TCR-mediated proliferation and cytokine production. The B7-H1:PD-1 pathway is involved in the negative regulation of some immune responses and may play an important role in the regulation of peripheral tolerance.
- Nishimura, H. and T. Honjo (2001) Trends in Immunology 22:265.
- Freeman, G.J. et al. (2000) J. Exp. Med. 192:1027.
- Latchman, Y. et al. (2001) Nat. Immunol. 2:261.
Citations for Human PD-L1/B7-H1 Biotinylated Antibody
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.
Citations: Showing 1 - 3
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Bifunctional immune checkpoint-targeted antibody-ligand traps that simultaneously disable TGF? enhance the efficacy of cancer immunotherapy
Authors: R Ravi, KA Noonan, V Pham, R Bedi, A Zhavoronko, IV Ozerov, E Makarev, A V Artemov, PT Wysocki, R Mehra, S Nimmagadda, L Marchionni, D Sidransky, IM Borrello, E Izumchenko, A Bedi
Nat Commun, 2018;9(1):741.
Applications: ELISA detection
Soluble PD-L1 as a biomarker in malignant melanoma and checkpoint blockade
Authors: J Zhou, KM Mahoney, A Giobbie-Hu, F Zhao, S Lee, X Liao, S Rodig, J Li, X Wu, LH Butterfiel, M Piesche, MP Manos, LM Eastman, G Dranoff, GJ Freeman, FS Hodi
Cancer Immunol Res, 2017;0(0):.
Sample Types: Cell Culture Supernates
Increased B7-H1 expression on dendritic cells correlates with programmed death 1 expression on T cells in simian immunodeficiency virus-infected macaques and may contribute to T cell dysfunction and disease progression.
Authors: Xu H, Wang X, Pahar B
J. Immunol., 2010;185(12):7340-8.
Species: Primate - Macaca mulatta (Rhesus Macaque)
Sample Types: Whole Cells
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