CD8 Antibody
Novus Biologicals, part of Bio-Techne | Catalog # NBP2-29475
Key Product Details
Validated by
Biological Validation
Species Reactivity
Validated:
Human, Mouse, Porcine
Cited:
Human, Mouse, Porcine
Applications
Validated:
Flow Cytometry, Immunocytochemistry/ Immunofluorescence, Immunohistochemistry, Immunohistochemistry-Frozen, Immunohistochemistry-Paraffin
Cited:
Block/Neutralize, IF/IHC, Immunocytochemistry/ Immunofluorescence, Immunohistochemistry-Paraffin, Western Blot
Label
Unconjugated
Antibody Source
Polyclonal Rabbit IgG Kappa
Concentration
0.2 mg/ml
Product Specifications
Immunogen
Recombinant fragment from human CD8 C-terminal cytoplasmic domain of alpha chain (exact sequence is proprietary). (Uniprot: P01732)
Reactivity Notes
Mouse reactivity reported in scientific literature (PMID: 29030607). Use in Porcine reported in scientific literature (PMID:33839961)
Localization
Cell surface
Marker
Cytotoxic- & Suppressor T-Cell Marker
Clonality
Polyclonal
Host
Rabbit
Isotype
IgG Kappa
Theoretical MW
32 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.
Description
200 ug/ml of antibody purified from rabbit anti-serum by Protein A chromatography. Supplied in 10 mM PBS, pH 7.4 with 0.05% BSA and 0.05% sodium azide. Also available WITHOUT BSA & azide at 1.0 mg/ml. (NBP2-33122)
Antibody with azide - store at 2 to 8C.
Antibody with azide - store at 2 to 8C.
Scientific Data Images for CD8 Antibody
Immunohistochemistry-Frozen: CD8 Antibody [NBP2-29475]
Immunohistochemistry-Frozen: CD8 Antibody [NBP2-29475] - Mouse Ccdc88b expression in colon during DSS-induced colitis. Wild type (WT) mice were either not treated (NT) or given 3% DSS for 5 days followed by 3 days of water. Representative confocal microscopy images of tissue sections from colon of NT or DSS-treated mice at day 8, and stained for or Ccdc88b (red) and CD8 (green). Scale bars, 100 um. Image collected and cropped by CiteAb from the following publication (//pubmed.ncbi.nlm.nih.gov/29030607/) licensed under a CC-BY license.CD8 Antibody
Formalin-fixed, paraffin-embedded human tonsil stained with CD8 antibody at 2ug/ml at RT. HIER: Tris/EDTA, pH9.0, 45min. Secondary: HRP-polymer, 30min. DAB, 5min.Immunohistochemistry-Frozen: CD8 Antibody [NBP2-29475] -
Immunohistochemistry-Frozen: CD8 Antibody [NBP2-29475] - Mouse Ccdc88b expression in colon during DSS-induced colitis. Wild type (WT) mice were either not treated (NT) or given 3% DSS for 5 days followed by 3 days of water. aCcdc88b mRNA expression in distal colons of NT (n = 3) or DSS-treated WT mice (n = 3 for each time point) at the indicated days. Data represent expression relative to hprt±SEM (n = 3). *P < 0.05, **P < 0.01 (two-tailed Student’s t-test) & are representative of one experiment. b Representative immunoblots for Ccdc88b protein detected in extracts from distal colons from NT or DSS-treated WT & Ccdc88Bmut mutant mice at indicated time points, & densitometric quantification of Ccdc88b immunoblot normalized to beta-actin±SEM (n = 3) (representative of one of two independent experiments); **P < 0.01 (two-tailed Student’s t-test). c Representative confocal microscopy images of tissue sections from colon of NT or DSS-treated mice at indicated times, & stained with antibodies against Ccdc88b (red), CD45 (green), & E-Cadherin (purple) & nuclei staining DAPI (blue). Scale bars, 100 μm. d Representative FACS plots & quantification of lamina propria cells stained for CD45 & for Ccdc88b antibodies for NT (n = 3) & DSS-treated WT mice (n = 4 for each time point) at indicated time points, data are representative of one experiment. e Representative confocal microscopy images of tissue sections from colon of NT or DSS-treated mice at day 8, & stained for Ccdc88b (red), CD3 (green) & CD11b (green); nuclei are stained with DAPI (blue). Scale bars, 100 μm. f same as in e for Ccdc88b (red), CD4 (green) & CD8 (green). Scale bars, 100 μm Image collected & cropped by CiteAb from the following publication (https://www.nature.com/articles/s41467-017-01381-y), licensed under a CC-BY license. Not internally tested by Novus Biologicals.Applications for CD8 Antibody
Application
Recommended Usage
Flow Cytometry
1-2 ug/million cells
Immunohistochemistry-Paraffin
1-2 ug/ml
Application Notes
Use in Immunohistochemistry reported in scientific literature (PMID:33839961)
Optimal dilution for a specific application should be determined.
Immunohistochemistry (Formalin-fixed): 1-2ug/ml for 30 minutes at RT. Staining of formalin-fixed tissues requires heating tissue sections in 10mM Tris with 1mM EDTA, pH 9.0, for 45 min at 95C followed by cooling at RT for 20 minutes.
Optimal dilution for a specific application should be determined.
Immunohistochemistry (Formalin-fixed): 1-2ug/ml for 30 minutes at RT. Staining of formalin-fixed tissues requires heating tissue sections in 10mM Tris with 1mM EDTA, pH 9.0, for 45 min at 95C followed by cooling at RT for 20 minutes.
Reviewed Applications
Read 1 review rated 3 using NBP2-29475 in the following applications:
Formulation, Preparation, and Storage
Purification
Protein A purified
Formulation
10 mM PBS, pH 7.4 with 0.05% BSA
Preservative
0.05% Sodium Azide
Concentration
0.2 mg/ml
Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Store at 4C.
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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