Peripherally induced human regulatory T cells uncouple Kv1.3 activation from TCR-associated signaling.

ABSTRACT: Peripherally induced Tregs (iTregs) are being recognized as a functional and physiologically relevant T-cell subset. Understanding the molecular basis of their development is a necessary step before the therapeutic potential of iTreg manipulation can be exploited. In this study, we report that the differentiation of primary human T cells to suppressor iTregs involves the relocation of key proximal TCR signaling elements to the highly active IL-2-Receptor (IL-2-R) pathway. In addition to the recruitment of lymphocyte-specific protein tyrosine kinase (Lck) to the IL-2-R complex, we identified the dissociation of the voltage-gated K(+) channel Kv1.3 from the TCR pathway and its functional coupling to the IL-2-R. The regulatory switch of Kv1.3 activity in iTregs may constitute an important co

SUBMITTER: Reneer MC 

PROVIDER: S-EPMC3517126 | biostudies-literature | 2011 Nov

REPOSITORIES: biostudies-literature