CD8 Antibody
Novus Biologicals, part of Bio-Techne | Catalog # NBP2-34039
Key Product Details
Validated by
Orthogonal Validation
Species Reactivity
Validated:
Human
Cited:
Human, Primate - Macaca mulatta (Rhesus Macaque)
Applications
Validated:
Immunohistochemistry, Immunohistochemistry-Paraffin
Cited:
IF/IHC, Immunocytochemistry/ Immunofluorescence, Immunohistochemistry-Paraffin
Label
Unconjugated
Antibody Source
Polyclonal Rabbit IgG
Concentration
Concentrations vary lot to lot. See vial label for concentration. If unlisted please contact technical services.
Product Specifications
Immunogen
CD8 Antibody was developed against a recombinant protein corresponding to amino acids: AASPTFLLYLSQNKPKAAEGLDTQRFSGKRLGDTFVLTLSDFRRENEGYYFCSALSNSIMYFSHFVPVFLPAKPTTTPAPRPPT
Clonality
Polyclonal
Host
Rabbit
Isotype
IgG
Theoretical MW
26 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
Scientific Data Images for CD8 Antibody
Immunohistochemistry-Paraffin: CD8 Antibody [NBP2-34039]
Immunohistochemistry-Paraffin: CD8 alpha Antibody [NBP2-34039] - Staining of human spleen shows moderate to strong positivity in lymphoid cells.Immunohistochemistry-Paraffin: CD8 Antibody [NBP2-34039]
Immunohistochemistry-Paraffin: CD8 alpha Antibody [NBP2-34039] - Staining of human lymph node shows moderate to strong positivity in lymphoid cells.Applications for CD8 Antibody
Application
Recommended Usage
Immunohistochemistry
1:500 - 1:1000
Immunohistochemistry-Paraffin
1:500 - 1:1000
Application Notes
For IHC-Paraffin, HIER pH 6 retrieval is recommended.
Formulation, Preparation, and Storage
Purification
Immunogen affinity purified
Formulation
PBS (pH 7.2) and 40% Glycerol
Preservative
0.02% Sodium Azide
Concentration
Concentrations vary lot to lot. See vial label for concentration. If unlisted please contact technical services.
Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
Background: CD8
Given its role in the immune system, CD8-deficiency in T-cells is a hallmark of many diseases and pathologies (8-10). Specifically, CD8+ T-cell deficiency is prevalent in chronic autoimmune diseases including multiple sclerosis, rheumatoid arthritis, ulcerative colitis, Crohn's disease, type 1 diabetes mellitus, and Graves' disease (8). Furthermore, cancers or chronic infection can lead to CD8 T-cell exhaustion as the continual antigen presentation and inflammatory signals eventually cause the CD8+ T-cells to lose functionality (9, 10). However, animal models and clinical studies have suggested that T-cells are capable of being reinvigorated using inhibitory receptor blockade resulting in better disease outcomes and these exhausted T-cells may be a potential therapeutic target (9, 10).
Alternative names for CD8 includes CD antigen: CD8a, CD8 antigen, alpha polypeptide (p32), CD8a molecule, CD8A, Leu2 T-lymphocyte antigen, LEU2, MAL, OKT8 T-cell antigen, p32, T cell co-receptor, T8 T-cell antigen, T-cell antigen Leu2, T-cell surface glycoprotein CD8 alpha chain, and T-lymphocyte differentiation antigen T8/Leu-2.
References
1. Littman D. R. (1987). The structure of the CD4 and CD8 genes. Annual review of immunology. https://doi.org/10.1146/annurev.iy.05.040187.003021
2. Naeim F. (2008). Chapter 2- Principles of Immunophenotyping. Hematopathology. https://doi.org/10.1016/B978-0-12-370607-2.00002-8.
3. Gao, G. F., & Jakobsen, B. K. (2000). Molecular interactions of coreceptor CD8 and MHC class I: the molecular basis for functional coordination with the T-cell receptor. Immunology today. https://doi.org/10.1016/s0167-5699(00)01750-3
4. UniProt (P01732)
5. UniProt (P01731)
6. Kappes D. J. (2007). CD4 and CD8: hogging all the Lck. Immunity. https://doi.org/10.1016/j.immuni.2007.11.002
7. Gangadharan, D., & Cheroutre, H. (2004). The CD8 isoform CD8alphaalpha is not a functional homologue of the TCR co-receptor CD8alphabeta. Current opinion in immunology. https://doi.org/10.1016/j.coi.2004.03.015
8. Pender M. P. (2012). CD8+ T-Cell Deficiency, Epstein-Barr Virus Infection, Vitamin D Deficiency, and Steps to Autoimmunity: A Unifying Hypothesis. Autoimmune diseases. https://doi.org/10.1155/2012/189096
9. Kurachi M. (2019). CD8+ T cell exhaustion. Seminars in immunopathology. https://doi.org/10.1007/s00281-019-00744-5
10. Hashimoto, M., Kamphorst, A. O., Im, S. J., Kissick, H. T., Pillai, R. N., Ramalingam, S. S., Araki, K., & Ahmed, R. (2018). CD8 T Cell Exhaustion in Chronic Infection and Cancer: Opportunities for Interventions. Annual review of medicine. https://doi.org/10.1146/annurev-med-012017-043208
Additional CD8 Products
Product Documents for CD8 Antibody
Product Specific Notices for CD8 Antibody
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.
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