Perez Aciego, PalomaAlarcon, BalbinoArnaiz Villena, AntonioTerhorst, CoxTimón, MarcosSegurado, OscarRegueiro González-Barros, José Ramón2024-08-072024-08-071991Pérez-Aciego P, Alarcón B, Arnaiz-Villena A, Terhorst C, Timón M, Segurado OG, Regueiro JR. Expression and function of a variant T cell receptor complex lacking CD3-gamma. J Exp Med. 1991 Aug 1;174(2):319-26. doi: 10.1084/jem.174.2.319. PMID: 1713248; PMCID: PMC2118903.1540-953810.1084/JEM.174.2.319https://hdl.handle.net/20.500.14352/107428A T cell line termed DIL2 has been derived from an infant with a polyclonal T cell receptor (TCR)/CD3 cell surface expression defect. Indirect immunofluorescence showed that the expression of certain TCR/CD3 epitopes (like those detected by WT31 and BMA031 monoclonals) was strongly reduced (around five-fold) on DIL2, whereas other epitopes (like those detected by SP34 and Leu4) were only around two-fold lower than in normal T cell lines. Specific immunoprecipitates of surface-radioiodinated DIL2 cells contained TCR-alpha, TCR-beta, CD3-delta, CD3-epsilon and TCR-zeta chains, but lacked CD3-gamma. This structural TCR/CD3 variant was, however, capable of transducing certain activation signals, since normal proliferation and a low but significant calcium flux was observed in DIL2 cells after engagement with specific antibodies. Our data suggest that a functional TCR/CD3 complex can be expressed on the surface of T cells in the absence of CD3-gamma.engAttribution-NonCommercial-ShareAlike 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-sa/4.0/journal articlehttps://doi.org/10.1084/JEM.174.2.319https://rupress.org/jem/article/174/2/319/58127/Expression-and-function-of-a-variant-T-cellopen access616-097Inmunología2412 Inmunología