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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Crippling of CD3-zeta ITAMs does not impair T cell receptor signaling.

We evaluated the importance of CD3-zeta ITAMs in T cell responses by breeding the P14 transgenic TCR into mice in which CD3-zeta chains lacking all or part of their ITAMs were genetically substituted for wild-type CD3-zeta chains. In contrast to the H-Y TCR, the P14 TCR permitted the development of peripheral CD8+ T cells harboring signaling-defective CD3-zeta subunits. The absence of functional CD3-zeta ITAMs did not reduce the spectrum of activation events and effector functions that constitute the normal attributes of mature CD8+ T cells. The only detectable differences were quantitative and noted only when T cells were challenged with suboptimal peptide concentrations. Therefore, the ITAMs present in the CD3-gammadeltaepsilon module are sufficient for qualitatively normal TCR signaling and those present in CD3-zeta have no exclusive role during T cell activation.[1]

References

  1. Crippling of CD3-zeta ITAMs does not impair T cell receptor signaling. Ardouin, L., Boyer, C., Gillet, A., Trucy, J., Bernard, A.M., Nunes, J., Delon, J., Trautmann, A., He, H.T., Malissen, B., Malissen, M. Immunity (1999) [Pubmed]
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