Anti-Hu CD8 Pacific Blue153

Anti-Hu CD8 Pacific Blue153

• Background: The CD8 T cell coreceptor (monomer approx. 32-34 kDa) is expressed as alpha/beta heterodimer on majority of MHC I-restricted conventional T cells and thymocytes and as alpha/alpha homodimer on subsets of memory T cells, intraepithelial lymphocytes, NK cells and dendritic cells. Regulation of CD8 beta level on T cell surface seems to be an important mechanism to control their effector function. Assembly of CD8 alpha-beta but not alpha-alpha dimers is connected with formation or localization to the lipid rafts. Recruiting triggered TCR complexes to these membrane microdomains as well as affinity of TCR to MHC I is modulated by CD8, thereby affecting the functional diversity of the TCR signaling.
• Specifications: The antibody MEM-31 recognizes a conformationally-dependent extracellular epitope of CD8, a cell surface glycoprotein found on most cytotoxic T lymphocytes that mediates efficient cell-cell interactions within the immune system. CD8 is a disulfide-linked dimer and exists as a CD8 alpha/alpha homodimer or CD8 alpha/beta heterodimer (each monomer approx. 32-34 kDa). The antibody does not react with formaldehyde-fixed cells negative in Western blotting application.
• CAS Number: 9007-83-4
• Certification: RUO
• Host: Mouse
• Species Reactivity: Human
• Immunogen: Crude thymus membrane fraction.
• Target Antigen: CD8
• Isotype: IgG2a
• Clone: MEM-31
• Applications: Flow cytometry: The reagent is designed for analysis of human blood cells using 4 μl reagent / 100 μl of whole blood or 106 cells in a suspension. The content of a vial (0.4 mL) is sufficient for 100 tests.
• Validated Applications: FC
• Format: Pacific Blue153
• Buffer: Stabilizing phosphate buffered saline (PBS), pH 7.4, 15 mM sodium azide
• References & Citations: *Kanderova V, Kuzilkova D, Stuchly J, Vaskova M, Brdicka T, Fiser K, Hrusak O, Lund-Johansen F, Kalina T: High-resolution Antibody Array Analysis of Childhood Acute Leukemia Cells. Mol Cell Proteomics. 2016 Apr15(4):1246-61., URL: http://www.ncbi.nlm.nih.gov/pubmed/26785729 ,*Linnebacher M, Wienck A, Boeck I, Klar E: Identification of an MSI-H tumor-specific cytotoxic T cell epitope generated by the (-1) frame of U79260(FTO). J Biomed Biotechnol. 20102010:841451., URL: https://www.ncbi.nlm.nih.gov/pubmed/20339516,*Estefanía E, Flores R, Gómez-Lozano N, Aguilar H, López-Botet M, Vilches C: Human KIR2DL5 is an inhibitory receptor expressed on the surface of NK and T lymphocyte subsets. J Immunol. 2007 Apr 1178(7):4402-10., URL: https://www.ncbi.nlm.nih.gov/pubmed/17371997?itool,*Drbal K, Moertelmaier M, Holzhauser C, Muhammad A, Fuertbauer E, Howorka S, Hinterberger M, Stockinger H, Schütz GJ: Single-molecule microscopy reveals heterogeneous dynamics of lipid raft components upon TCR engagement. Int Immunol. 2007 May19(5):675-84., URL: https://www.ncbi.nlm.nih.gov/pubmed/17446208?itool,*Brdicková N, Brdicka T, Angelisová P, Horváth O, Spicka J, Hilgert I, Paces J, Simeoni L, Kliche S, Merten C, Schraven B, Horejsí V: LIME: a new membrane Raft-associated adaptor protein involved in CD4 and CD8 coreceptor signaling. J Exp Med. 2003 Nov 17198(10):1453-62., URL: https://www.ncbi.nlm.nih.gov/pubmed/14610046?itool,*Horejsí V, Angelisová P, Bazil V, Kristofová H, Stoyanov S, Stefanová I, Hausner P, Vosecký M, Hilgert I: Monoclonal antibodies against human leucocyte antigens. II. Antibodies against CD45 (T200), CD3 (T3), CD43, CD10 (CALLA), transferrin receptor (T9), a novel broadly expressed 18-kDa antigen (MEM-43) and a novel antigen of restricted expression (MEM-74). Folia Biol (Praha). 198834(1):23-34., URL: https://pubmed.ncbi.nlm.nih.gov/2968928/,*Leukocyte Typing III., McMichael A. J. et al (Eds.), Oxford University Press (1987)., URL: ,*Horejsi V et al.: Monoclonal antibodies against human leucocyte antigens. I. Antibodies against beta-2-microglobulin, immunoglobulin kappa light chains, HLA-DR-like antigens, T8 antigen, T1 antigen, a monocyte antigen, and a pan-leucocyte antigen. Folia Biol. (Praha) 32, 12 (1986)., URL: ,
• Other References: *Devine L, Thakral D, Nag S, Dobbins J, Hodsdon ME, Kavathas PB: Mapping the binding site on CD8 beta for MHC class I reveals mutants with enhanced binding. J Immunol. 2006 Sep 15177(6):3930-8., URL: https://pubmed.ncbi.nlm.nih.gov/16951356/,*Pang DJ, Hayday AC, Bijlmakers MJ: CD8 Raft localization is induced by its assembly into CD8alpha beta heterodimers, not CD8alpha alpha homodimers. J Biol Chem. 2007 May 4282(18):13884-94., URL: https://pubmed.ncbi.nlm.nih.gov/17341584/,*van den Berg HA, Wooldridge L, Laugel B, Sewell AK: Coreceptor CD8-driven modulation of T cell antigen receptor specificity. J Theor Biol. 2007 Nov 21249(2):395-408., URL: https://pubmed.ncbi.nlm.nih.gov/17869274/,
• Storage Conditions: Store at 2-8°C. Protect from prolonged exposure to light. Do not freeze.