PD-1 Antibody [Phycoerythrin]

Human peripheral blood mononuclear cells (PBMCs) either (A) untreated or (B) treated with 5 µg/mL PHA overnight were stained with Goat Anti-Human PD-1 PE-conjugated Antigen Affinity-purified Polyclonal Antibody (Catalog # FAB7115P) and Mouse Anti-Human CD3e APC-conjugated Monoclonal Antibody (Catalog # FAB100A). Quadrant markers were set based on control antibody staining (Catalog # IC108P). View our protocol for Staining Membrane-associated Proteins.

• Reactivity: Hu
• Applications: Flow
• Clonality: Polyclonal
• Host: Goat
• Conjugate: Phycoerythrin

PD-1 Antibody [Phycoerythrin] Summary

• Immunogen: Mouse myeloma cell line NS0-derived recombinant human PD-1
  Leu25-Gln167
  Accession # Q8IX89
• Specificity: Detects human PD-1 in ELISAs and Western blots. In sandwich ELISAs, less than 2% cross-reactivity with recombinant mouse PD-1 and less than 0.2% cross-reactivity with recombinant human (rh) CD28, rhICOS, and rhCTLA-4 is observed.
• Source: N/A
• Isotype: IgG
• Clonality: Polyclonal
• Host: Goat
• Gene: PDCD1
• Purity Statement: Antigen Affinity-purified

Applications/Dilutions

• Dilutions:
  • Flow Cytometry 10 uL/10^6 cells

Packaging, Storage & Formulations

• Storage: Protect from light. Do not freeze.
  12 months from date of receipt, 2 to 8 degreesC as supplied.
• Buffer: Supplied in a saline solution containing BSA and Sodium Azide.
• Preservative: Sodium Azide

Notes

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

Alternate Names for PD-1 Antibody [Phycoerythrin]

• CD279 antigen
• CD279
• hPD-1
• PD1
• PD-1
• PD1hPD-l
• PDCD1
• programmed cell death 1
• programmed cell death protein 1
• Protein PD-1
• SLEB2

Background

Programmed Death-1 (PD-1) is a type I transmembrane protein belonging to the CD28/CTLA-4 family of immunoreceptors that mediate signals for regulating immune responses (1). Members of the CD28/CTLA-4 family have been shown to either promote T cell activation (CD28 and ICOS) or down-regulate T cell activation (CTLA-4 and PD-1) (2). PD-1 is expressed on activated T cells, B cells, myeloid cells, and on a subset of thymocytes. In vitro, ligation of PD-1 inhibits TCR-mediated T-cell proliferation and production of IL-1, IL-4, IL-10, and IFN-gamma . In addition, PD-1 ligation also inhibits BCR mediated signaling. PD-1 deficient mice have a defect in peripheral tolerance and spontaneously develop autoimmune diseases (2, 3). Two B7 family proteins, PD-L1 (also called B7-H1) and PD-L2 (also known as B7-DC), have been identified as PD-1 ligands. Unlike other B7 family proteins, both PD-L1 and PD-L2 are expressed in a wide variety of normal tissues including heart, placenta, and activated spleens (4). The wide expression of PD-L1 and PD-L2 and the inhibitor effects on PD-1 ligation indicate that PD-1 might be involved in the regulation of peripheral tolerance and may help prevent autoimmune diseases (2). The human PD-1 gene encodes a 288 amino acid (aa) protein with a putative 20 aa signal peptide, a 148 aa extracellular region with one immunoglobulin-like V-type domain, a 24 aa transmembrane domain, and a 95 aa cytoplasmic region. The cytoplasmic tail contains two tyrosine residues that form the immuno-receptor tyrosine-based inhibitory motif (ITIM) and immunoreceptor tyrosine-based switch motif (ITSM) that are important in mediating PD-1 signaling. Mouse and human PD-1 share approximately 60% aa sequence identity (4).

1. Ishida, Y. et al. (1992) EMBO J. 11:3887.
2. Nishimura, H. and T. Honjo (2001) Trends in Immunol. 22:265.
3. Latchman, Y. et al. (2001) Nature Immun. 2:261.
4. Carreno, B.M. and M. Collins (2002) Annu. Rev. Immunol. 20:29.

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-1 Antibody (FAB7115P)(1)

Publication using FAB7115P

• Thi-Anh-Thuy Tran, Young-Hee Kim, Thi-Hoang-Oanh Duong, JayaLakshmi Thangaraj, Tan-Huy Chu, Shin Jung et al. Natural killer cell therapy potentially enhances the antitumor effects of bevacizumab plus irinotecan in a glioblastoma mouse model Frontiers in Immunology 2023-01-10 [PMID: 36703992]

Bioinformatics

• Gene Symbol: PDCD1
• Uniprot:
  • Q8IX89()