Purified NA/LE Hamster Anti-Mouse CD3e(145-2C11)

Unconjugated

CD3e

Armenian Hamster IgG1, κ

The 145-2C11 monoclonal antibody specifically binds to the 25-kDa ε chain of the T-cell receptor-associated CD3 complex that is expressed on thymocytes, mature T lymphocytes, and NK-T cells. The cytoplasmic domain of CD3e participates in the signal transduction events that activate several cellular biochemical pathways as a result of antigen recognition. Soluble 145-2C11 antibody can activate either unprimed (naive) or primed (memory/preactivated) T cells in vivo or in vitro , in the presence of Fc receptor-bearing accessory cells.  In contrast, plate-bound 145-2C11 can activate T cells in the absence of accessory cells. Soluble 145-2C11 antibody has been reported to induce re-directed lysis of Fc receptor-bearing target cells by CTL clones and can also block lysis of specific target cells by antigen-specific CTL"s. Under some conditions, T-cell activation by 145-2C11 antibody has been reported to result in apoptotic cell death. The 145-2C11 antibody does not cross-react with rat leukocytes. Preincubation of thymus cell suspensions at 37°C for 2-4 hours prior to staining reportedly enhances the ability of anti-CD3ε and anti-αβ TCR mAbs to detect the T-cell receptor on immature thymocytes.

Mouse (QC Testing)

CD3; CD3 epsilon; Cd3e; CD3ε; T3e

研发参考(13) 1. Chai JG, Lechler RI. Immobilized anti-CD3 mAb induces anergy in murine naive and memory CD4+ T cells in vitro. Int Immunol. 1997; 9(7):935-944. (Biology: Activation, Stimulation). 2. Duke RC, Cohen JJ, Boehme SA, et al. Morphological, biochemical, and flow cytometric assays of apoptosis. In: Coligan J, Kruisbeek AM, Margulies D, Shevach EM, Strober W, ed. Current Protocols in Immunology. New York: John Wiley and Sons; 1995:3.17.1-3.17.33. 3. Isakov N, Wange RL, Burgess WH, Watts JD, Aebersold R, Samelson LE. ZAP-70 binding specificity to T cell receptor tyrosine-based activation motifs: the tandem SH2 domains of ZAP-70 bind distinct tyrosine-based activation motifs with varying affinity. J Exp Med. 1995; 181(1):375-380. (Biology: Immunoprecipitation). 4. Kruisbeek AM, Shevach EM. Proliferative assays for T cell function. Curr Protoc Immunol. 2004; 3:3.12.1-3.12.14. (Methodology: Activation, Stimulation). 5. Kubo RT, Born W, Kappler JW, Marrack P, Pigeon M. Characterization of a monoclonal antibody which detects all murine alpha beta T cell receptors. J Immunol. 1989; 142(8):2736-2742. (Biology). 6. Leo O, Foo M, Sachs DH, Samelson LE, Bluestone JA. Identification of a monoclonal antibody specific for a murine T3 polypeptide. Proc Natl Acad Sci U S A. 1987; 84(5):1374-1378. (Immunogen: Activation, Blocking, Cytotoxicity, Immunoprecipitation, Stimulation). 7. Nakano H, Yamazaki T, Miyatake S, Nozaki N, Kikuchi A, Saito T. Specific interaction of topoisomerase II beta and the CD3 epsilon chain of the T cell receptor complex. J Biol Chem. 1996; 271(11):6483-6489. (Biology: Immunoprecipitation). 8. Payer E, Elbe A, Stingl G. Circulating CD3+/T cell receptor V gamma 3+ fetal murine thymocytes home to the skin and give rise to proliferating dendritic epidermal T cells. J Immunol. 1991; 146(8):2536-2543. (Biology: Immunofluorescence). 9. Portoles P, Rojo J, Golby A, et al . Monoclonal antibodies to murine CD3 epsilon define distinct epitopes, one of which may interact with CD4 during T cell activation. J Immunol. 1989; 142(12):4169-4175. (Biology: Activation, Immunoprecipitation, Stimulation). 10. Salvadori S, Gansbacher B, Pizzimenti AM, Zier KS. Abnormal signal transduction by T cells of mice with parental tumors is not seen in mice bearing IL-2-secreting tumors. J Immunol. 1994; 153(11):5176-5182. (Biology: Western blot). 11. Shinkai Y, Alt FW. CD3 epsilon-mediated signals rescue the development of CD4+CD8+ thymocytes in RAG-2-/- mice in the absence of TCR beta chain expression. Int Immunol. 1994; 6(7):995-1001. (Biology: Activation, Stimulation). 12. Vossen AC, Tibbe GJ, Kroos MJ, van de Winkel JG, Benner R, Savelkoul HF. Fc receptor binding of anti-CD3 monoclonal antibodies is not essential for immunosuppression, but triggers cytokine-related side effects. Eur J Immunol. 1995; 25(6):1492-1496. (Biology: Blocking). 13. Wagner DH Jr, Hagman J, Linsley PS, Hodsdon W, Freed JH, Newell MK. Rescue of thymocytes from glucocorticoid-induced cell death mediated by CD28/CTLA-4 costimulatory interactions with B7-1/B7-2. J Exp Med. 1996; 184(5):1631-1638. (Biology: Cytotoxicity).

12501