RecombiMAb anti-mouse PD-1 (CD279)

Clone Catalog # Category
29F.1A12™-CP159 CP159
USD 224 - USD 6087

About RecombiMAb anti-mouse PD-1 (CD279)

The 29F.1A12™-CP159 monoclonal antibody is a recombinant chimeric version of the original 29F.1A12™ antibody. The variable domain sequences are identical to the original 29F.1A12™ but the constant region sequences have been switched from rat IgG2a to mouse IgG2a. The 29F.1A12™-CP159 antibody contains no Fc mutations just as the original rat IgG2a antibody does not. 29F.1A12™-CP159 reacts with mouse PD-1 (programmed death-1) also known as CD279. PD-1 is a 50-55 kDa cell surface receptor encoded by the Pdcd1 gene that belongs to the CD28 family of the Ig superfamily. PD-1 is transiently expressed on CD4 and CD8 thymocytes as well as activated T and B lymphocytes and myeloid cells. PD-1 expression declines after successful elimination of antigen. Additionally, Pdcd1 mRNA is expressed in developing B lymphocytes during the pro-B-cell stage. PD-1’s structure includes a ITIM (immunoreceptor tyrosine-based inhibitory motif) suggesting that PD-1 negatively regulates TCR signals. PD-1 signals via binding its two ligands, PD-L1 and PD-L2 both members of the B7 family. Upon ligand binding, PD-1 signaling inhibits T-cell activation, leading to reduced proliferation, cytokine production, and T-cell death. Additionally, PD-1 is known to play key roles in peripheral tolerance and prevention of autoimmune disease in mice as PD-1 knockout animals show dilated cardiomyopathy, splenomegaly, and loss of peripheral tolerance. Induced PD-L1 expression is common in many tumors including squamous cell carcinoma, colon adenocarcinoma, and breast adenocarcinoma. PD-L1 overexpression results in increased resistance of tumor cells to CD8 T cell mediated lysis. In mouse models of melanoma, tumor growth can be transiently arrested via treatment with antibodies which block the interaction between PD-L1 and its receptor PD-1. For these reasons anti-PD-1 mediated immunotherapies are currently being explored as cancer treatments.

RecombiMAb anti-mouse PD-1 (CD279) Specifications

IsotypeMouse IgG2a, κ
ImmunogenRecombinant PD-1-Ig fusion protein
Reported Applications
  • in vivo blocking of PD-1/PD-L signaling*
  • in vitro PD-1 neutralization*
  • Immunohistochemistry (frozen)*
  • Immunofluorescence*
  • Western blot*
  • Flow cytometry*
  • *Reported for the original rat IgG2a 29F.1A12 antibody
  • PBS, pH 7.0
  • Contains no stabilizers or preservatives
Endotoxin<1EU/mg (<0.001EU/μg) Determined by LAL gel clotting assay
Aggregation<5% Determined by SEC
  • >95%
  • Determined by SDS-PAGE
Sterility0.2 μm filtration
ProductionPurified from CHO cell supernatant in an animal-free facility
PurificationProtein G
Molecular Weight150 kDa
StorageThe antibody solution should be stored at the stock concentration at 4°C. Do not freeze.