Anti-Hu CD3 PE

CD3 complex is crucial in transducing antigen-recognition signals into the cytoplasm of T cells and in regulating the cell surface expression of the TCR complex. T cell activation through the antigen receptor (TCR) involves the cytoplasmic tails of the CD3 subunits CD3 gamma, CD3 delta, CD3 epsilon and CD3 zeta. These CD3 subunits are structurally related members of the immunoglobulins super family encoded by closely linked genes on human chromosome 11. The CD3 components have long cytoplasmic tails that associate with cytoplasmic signal transduction molecules. This association is mediated at least in part by a double tyrosine-based motif present in a single copy in the CD3 subunits. CD3 may play a role in TCR-induced growth arrest, cell survival and proliferation. The CD3 antigen is present on 68-82% of normal peripheral blood lymphocytes, 65-85% of thymocytes and Purkynje cells in the cerebellum. It is never expressed on B or NK cells. Decreased percentages of T lymphocytes may be observed in some autoimmune diseases.

Product Specifications

Certification

RUO

Reactivity

Non-human primates, Human

Immunogen

Human thymocytes

Target Antigen

CD3

Clone

SK7

Applications

FC (QC tested)

Format

Buffer

Stabilizing phosphate buffered saline (PBS), pH 7.4, 15 mM sodium azide

References & Citations

*Qiao D, Li L, Guo J, Lao S, Zhang X, Zhang J, Wu C: Mycobacterium tuberculosis culture filtrate protein 10-specific effector/memory CD4⁺ and CD8⁺ T cells in tubercular pleural fluid, with biased usage of T cell receptor Vβ chains. Infect Immun. 2011 Aug;79 (8) :3358-65., URL: https://pubmed.ncbi.nlm.nih.gov/21606188/, *Wood GS, Burns BF, Dorfman RF, Warnke RA: The immunohistology of non-T cells in the acquired immunodeficiency syndrome. Am J Pathol. 1985 Sep;120 (3) :371-9., URL: http://www.ncbi.nlm.nih.gov/pubmed/?term=am+j+pathol+120+371, *Li B, Wang H, Dai J, Ji J, Qian W, Zhang D, Hou S, Guo Y: Construction and characterization of a humanized anti-human CD3 monoclonal antibody 12F6 with effective immunoregulation functions. Immunology. 2005 Dec;116 (4) :487-98., URL: http://www.ncbi.nlm.nih.gov/pubmed/?term=li+b+wang+h+dai+j+ji+j , *Recio MJ, Moreno-Pelayo MA, Kiliç SS, Guardo AC, Sanal O, Allende LM, Pérez-Flores V, Mencía A, Modamio-Hø ybjø r S, Seoane E, Regueiro JR: Differential biological role of CD3 chains revealed by human immunodeficiencies. J Immunol. 2007 Feb 15;178 (4) :2556-64., URL: http://www.ncbi.nlm.nih.gov/pubmed/17277165 , *Guttman-Yassky E, Vugmeyster Y, Lowes MA, Chamian F, Kikuchi T, Kagen M, Gilleaudeau P, Lee E, Hunte B, Howell K, Dummer W, Bodary SC, Krueger JG: Blockade of CD11a by efalizumab in psoriasis patients induces a unique state of T-cell hyporesponsiveness. J Invest Dermatol. 2008 May;128 (5) :1182-91., URL: http://www.ncbi.nlm.nih.gov/pubmed/18239614 , *Fromm JR, Thomas A, Wood BL: Characterization and purification of neoplastic cells of nodular lymphocyte predominant hodgkin lymphoma from lymph nodes by flow cytometry and flow cytometric cell sorting. Am J Pathol. 2017 Feb;187 (2) :304-317., URL: https://pubmed.ncbi.nlm.nih.gov/27998726/, *van Dongen JJ, Krissansen GW, Wolvers-Tettero IL, Comans-Bitter WM, Adriaansen HJ, Hooijkaas H, van Wering ER, Terhorst C: Cytoplasmic expression of the CD3 antigen as a diagnostic marker for immature T-cell malignancies. Blood 1988 Mar;71 (3) :603-12., URL: https://pubmed.ncbi.nlm.nih.gov/3278747/, *Kužílková D, Puñet-Ortiz J, Aui PM, Fernández J, Fišer K, Engel P, van Zelm MC, Kalina T: Standardization of workflow and flow cytometry panels for quantitative expression profiling of surface antigens on blood leukocyte subsets: An HCDM CDMaps initiative. Front Immunol. 2022 Feb 11:13:827898. , URL: https://pubmed.ncbi.nlm.nih.gov/35222411/

Other References

*Huang Y, Wange RL: T cell receptor signaling: beyond complex complexes. J Biol Chem. 2004 Jul 9;279 (28) :28827-30., URL: https://pubmed.ncbi.nlm.nih.gov/15084594/, *Alarcón B, Swamy M, van Santen HM, Schamel WW: T-cell antigen-receptor stoichiometry: pre-clustering for sensitivity. EMBO Rep. 2006 May;7 (5) :490-5., URL: https://pubmed.ncbi.nlm.nih.gov/16670682/, *Kuhns MS, Davis MM, Garcia KC: Deconstructing the form and function of the TCR/CD3 complex. Immunity. 2006 Feb;24 (2) :133-9., URL: https://pubmed.ncbi.nlm.nih.gov/16473826/

Storage Conditions

Store at 2-8°C. Protect from prolonged exposure to light. Do not freeze.

Specificity

The mouse monoclonal antibody SK7 recognizes an extracellular epitope on the CD3 antigen on mature human T cells. This antibody reacts with the epsilon chain of the CD3 complex. The monoclonal antibodies SK7 and UCHT1 recognize overlapping epitopes.