PD-1 (Intracellular Domain) (D7D5W) XP® Rabbit mAb #84651
- WB
- IP
- IHC
- IF
- F
Supporting Data
| REACTIVITY | M |
| SENSITIVITY | Endogenous |
| MW (kDa) | 40-75 |
| Source/Isotype | Rabbit IgG |
Application Key:
- WB-Western Blotting
- IP-Immunoprecipitation
- IHC-Immunohistochemistry
- IF-Immunofluorescence
- F-Flow Cytometry
Species Cross-Reactivity Key:
- M-Mouse
Product Information
Product Usage Information
| Application | Dilution |
|---|---|
| Western Blotting | 1:1000 |
| Immunoprecipitation | 1:200 |
| IHC Leica Bond | 1:50 - 1:200 |
| Immunohistochemistry (Paraffin) | 1:100 - 1:400 |
| Immunofluorescence (Frozen) | 1:100 - 1:400 |
| Immunofluorescence (Immunocytochemistry) | 1:100 - 1:400 |
| Flow Cytometry (Fixed/Permeabilized) | 1:100 - 1:400 |
Storage
For a carrier free (BSA and azide free) version of this product see product #55789.
Protocol
Specificity / Sensitivity
PD-1 (Intracellular Domain) (D7D5W) XP® Rabbit mAb recognizes endogenous levels of total PD-1 protein.
Species Reactivity:
Mouse
The antigen sequence used to produce this antibody shares 100% sequence homology with the species listed here, but reactivity has not been tested or confirmed to work by CST. Use of this product with these species is not covered under our Product Performance Guarantee.
Species predicted to react based on 100% sequence homology:
Rat, Hamster
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Ala242 of mouse PD-1 protein.
Background
The programmed cell death 1 protein (PD-1, PDCD1, CD279) is a member of the CD28 family of immunoreceptors that regulate T cell activation and immune responses (1-3). The PD-1 protein contains an extracellular Ig V domain, a transmembrane domain, and a cytoplasmic tail that includes an immunoreceptor tyrosine-based inhibitory motif (ITIM) and an immunoreceptor tyrosine-based switch motif (ITSM). PD-1 is activated by the cell surface ligands PD-L1 and PD-L2 (4). Upon activation, PD-1 ITIM and ITSM phosphorylation leads to the recruitment of the protein tyrosine phosphatases SHP-1 and SHP-2, which suppress TCR signaling (5-7). In addition to activated T cells, PD-1 is expressed in activated B cells and monocytes, although its function in these cell types has not been fully characterized (8). The PD-1 pathway plays an important role in immune tolerance (3); however, research studies show that cancer cells often adopt this pathway to escape immune surveillance (9). Consequently, blockade of PD-1 and its ligands is proving to be a sound strategy for neoplastic intervention (10).
- Ishida, Y. et al. (1992) EMBO J 11, 3887-95.
- Shinohara, T. et al. (1994) Genomics 23, 704-6.
- Nishimura, H. et al. (1999) Immunity 11, 141-51.
- Freeman, G.J. et al. (2000) J Exp Med 192, 1027-34.
- Yokosuka, T. et al. (2012) J Exp Med 209, 1201-17.
- Sheppard, K.A. et al. (2004) FEBS Lett 574, 37-41.
- Chemnitz, J.M. et al. (2004) J Immunol 173, 945-54.
- Thibult, M.L. et al. (2013) Int Immunol 25, 129-37.
- Dong, H. et al. (2002) Nat Med 8, 793-800.
- Topalian, S.L. et al. (2012) Curr Opin Immunol 24, 207-12.
Limited Uses
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