Rabbit anti Human CD279 antibody
detects CD279, a co-stimulatory molecule also known as programmed cell death-1 (PD-1). CD279 is a single-pass type 1 membrane protein belonging to the CD28 family, and functions mainly as a negative regulator of T-cell activation. CD279 has two specific ligands; CD274 (PD-L1) and CD273 (PD-L2), and their interaction is key in the balance between stimulatory and inhibitory signals needed for effective immune responses to microbes and self-tolerance. CD279 is inducibly expressed by T-cells, B-cells, NK-T-cells and monocytes upon activation.
Loss of CD279 function has been associated with a number of autoimmune diseases, including rheumatoid arthritis, type I diabetes and ankylosing spondylitis. CD279 could be targeted therapeutically in the treatment of HIV infection to reduce T-cell exhaustion (Freeman et al. 2006
- Target Species
- Species Cross-Reactivity
|Target Species||Cross Reactivity|
- N.B. Antibody reactivity and working conditions may vary between species.
- Product Form
- Purified IgG - liquid
- Antiserum Preparation
- Antisera to Human CD279 were raised by repeated immunisation of rabbits with highly purified antigen. Purified IgG prepared from whole serum by affinity chromatography.
- Buffer Solution
- Phosphate buffered saline
- Preservative Stabilisers
- 0.02% Sodium Azide (NaN3)
- A peptide corresponding to a 16 amino acid sequence from near the carboxy terminus of Human CD279.
- Approx. Protein Concentrations
- IgG concentration 1.0mg/ml
- Store at +4oC or at -20oC if preferred.
Storage in frost-free freezers is not recommended.
This product should be stored undiluted. Avoid repeated freezing and thawing as this may denature the antibody. Should this product contain a precipitate we recommend microcentrifugation before use.
- 12 months from date of despatch
- Entrez Gene
- GO Terms
integral to membrane
protein tyrosine phosphatase activity
signal transducer activity
humoral immune response
multicellular organismal development
T cell costimulation
- For research purposes only
This product has been reported to work in the following applications. This information is derived from testing within our laboratories, peer-reviewed publications or personal communications from the originators. Please refer to references indicated for further information. For general protocol recommendations, please visit the antibody protocols page.
Applications of CD279 antibody
|Immunohistology - Paraffin 1
- 1This product requires antigen retrieval using heat treatment prior to staining of paraffin sections.Sodium citrate buffer pH 6.0 is recommended for this purpose.
Where this product has not been tested for use in a particular technique this does not necessarily exclude its use in such procedures. Suggested working dilutions are given as a guide only. It is recommended that the user titrates the product for use in their own system using appropriate negative/positive controls.
- Histology Positive Control Tissue
- Human brain tissue
- Western Blotting
- AHP1705 detects a band of approximately 45kDa in THP-1 cell lysate
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Useful Reagents Available
Product Specific References
Menke, J. et al. (2007) Programmed death 1 ligand (PD-L) 1 and PD-L2 limit autoimmune kidney disease: distinct roles.
J Immunol. 179: 7466-77.
Ishida, Y. et al. (1992) Induced expression of PD-1, a novel member of the immunoglobulin gene superfamily, upon programmed cell death.
EMBO J. 11 (11): 3887-95.
Zhong, X. et al. (2004) Suppression of expression and function of negative immune regulator PD-1 by certain pattern recognition and cytokine receptor signals associated with immune system danger.
Int. Immunol. 16:1181-8
Nishimura, H. et al. (1999) Development of lupus-like autoimmune diseases by the disruption of the PD-1 gene encoding an ITIM motif-carrying immunoreceptor.
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