T Cells with Commitment Issues

Sci. Signal., 20 April 2010
Vol. 3, Issue 118, p. jc3
DOI: 10.1126/scisignal.3118jc3

T Cells with Commitment Issues

  1. Raphael Schneider*
  1. Departments of Medicine and Microbiology and Immunology, Université de Montréal, CRCHUM-Notre-Dame Hospital, Pavilion JA DeSeve (room Y-3609), 1560 Sherbrooke E, Montreal, QC, Canada H2L 4M1.
  1. *E-mail, raphael.schneider{at}umontreal.ca


T cells are a central element of cell-mediated immunity. Host detection of infectious agents leads to antigen presentation and release of cytokines that cause naïve T cells to develop into effector T cells or regulatory T cells (Treg cells). Effector T cells act to control the invading agents and mediate tissue inflammation. Treg cells maintain immune homeostasis by suppressing effector T cell responses to prevent collateral damage. Until recently, T cell differentiation into distinct subsets with different functions had been considered irreversible. However, new evidence suggests that some differentiated T cell subsets are more phenotypically flexible than others. Studying the plasticity of T cells and the underlying signaling mechanisms may lead to important clues for understanding immunity and autoimmunity.


R. Schneider, T Cells with Commitment Issues. Sci. Signal. 3, jc3 (2010).

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