|Specificity:||The antibody MEM-57 reacts with gamma-epsilon and delta-epsilon dimers of human CD3 complex, a part of a bigger multisubunit T cell receptor complex (CD3/TCR) expressed on peripheral blood T lymphocytes and mature thymocytes.
HLDA IV.; WS Code T 96
|Immunogen:||Human thymocytes and T lymphocytes.|
Recommended dilution: 2 - 5 μg/ml
Peripheral Blood Lymphocytes
JURKAT human leukemia T cell line
The antibody MEM-57 immunoprecipitates from a detergent lysate of surface-radioiodinated T cells a strong zone of about 22 kDa and a weak 28-kDa zone, which is typical pattern yielded by a reference antibody Leu-4 (SK7).
The antibody MEM-57 has strong mitogenic effect on peripheral T lymphocytes; it reacts strongly with gamma/delta T lymphocytes.
|Purity:||> 95% (by SDS-PAGE)|
|Purification:||Purified by protein-A affinity chromatography|
|Storage Buffer:||Phosphate buffered saline (PBS) with 15 mM sodium azide, approx. pH 7.4|
|Storage / Stability:||Store at 2-8°C. Do not freeze. Do not use after expiration date stamped on vial label.|
|Expiration:||See vial label|
|Lot Number:||See vial label|
|Background:||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 Purkinje 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.
*Huang Y, Wange RL: T cell receptor signaling: beyond complex complexes. J Biol Chem. 2004 Jul 9;279(28):28827-30.
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*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.
*Leukocyte Typing III., McMichael M.J. et al. (Eds.), Oxford University Press (1987); p.611.
*Horejsi V. et al.: 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) 34, 23 (1988).
*Soucek J, Hilgert I, Budová I, Lindnerová G: Augmentation of NK cell activity and proliferation in cultured lymphocytes of leukemic patients by monoclonal antibodies CD3 and interleukin-2. Neoplasma. 1994;41(2):75-81.
*Soucek J, Chudomel V, Hrubá A, Lindnerová G: Induction of NK and LAK activities in human lymphocyte culture by a cytosol fraction from leukemic myeloblasts and by monoclonal antibody CD 3. Neoplasma. 1991;38(1):33-41.
*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 17;198(10):1453-62.
*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 May;19(5):675-84.
Panyi G, Bagdány M, Bodnár A, Vámosi G, Szentesi G, Jenei A, Mátyus L, Varga S, Waldmann TA, Gáspar R, Damjanovich S: Colocalization and nonrandom distribution of Kv1.3 potassium channels and CD3 molecules in the plasma membrane of human T lymphocytes. Proc Natl Acad Sci U S A. 2003 Mar 4;100(5):2592-7.
Dave VP, Cao Z, Browne C, Alarcon B, Fernandez-Miguel G, Lafaille J, de la Hera A, Tonegawa S, Kappes DJ: CD3 delta deficiency arrests development of the alpha beta but not the gamma delta T cell lineage. EMBO J. 1997 Mar 17;16(6):1360-70.
*Majer F, Vlaskova H, Krol L, Kalina T, Kubanek M, Stolnaya L, Dvorakova L, Elleder M, Sikora J: Danon disease: a focus on processing of the novel LAMP2 mutation and comments on the beneficial use of peripheral white blood cells in the diagnosis of LAMP2 deficiency. Gene. 2012 May 1;498(2):183-95.
*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 Apr;15(4):1246-61.
*Leukocyte Typing IV., Knapp W. et al. (Eds.), Oxford University Press (1989); p. 293.
*Hilgert I. et al.: Therapeutic in vivo use of the A1-CD3 monoclonal antibody. Transplantation 55, 435 (1993).
For laboratory research only, not for drug, diagnostic or other use.
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