TY - JOUR
T1 - CD4+CD25+ cells controlling a pathogenic CD4 response inhibit cytokine differentiation, CXCR-3 expression and tissue invasion
AU - Sarween, N
AU - Chodos, A
AU - Khan, M
AU - Raykundalia, Chandrabal
AU - Abbas, AK
AU - Walker, Lucy
PY - 2004/1/1
Y1 - 2004/1/1
N2 - It is well established that CD4(+)CD25(+) regulatory T cells (Tregs) inhibit autoimmune pathology. However, precisely how the behavior of disease-inducing T cells is altered by Tregs remains unclear. In this study we use a TCR transgenic model of diabetes to pinpoint how pathogenic CD4 T cells are modified by Tregs in vivo. We show that although Tregs only modestly inhibit CD4 cell expansion, they potently suppress tissue infiltration. This is associated with a failure of CD4 cells to differentiate into effector cells and to up-regulate the IFN-gamma-dependent chemokine receptor CXCR-3, which confers the ability to respond to pancreatic islet-derived CXCL10. Our data support a model in which Tregs permit T cell activation, yet prohibit T cell differentiation and migration into Ag-bearing tissues.
AB - It is well established that CD4(+)CD25(+) regulatory T cells (Tregs) inhibit autoimmune pathology. However, precisely how the behavior of disease-inducing T cells is altered by Tregs remains unclear. In this study we use a TCR transgenic model of diabetes to pinpoint how pathogenic CD4 T cells are modified by Tregs in vivo. We show that although Tregs only modestly inhibit CD4 cell expansion, they potently suppress tissue infiltration. This is associated with a failure of CD4 cells to differentiate into effector cells and to up-regulate the IFN-gamma-dependent chemokine receptor CXCR-3, which confers the ability to respond to pancreatic islet-derived CXCL10. Our data support a model in which Tregs permit T cell activation, yet prohibit T cell differentiation and migration into Ag-bearing tissues.
M3 - Article
C2 - 15322152
SN - 1550-6606
VL - 173
SP - 2942
EP - 2951
JO - Journal of Immunology
JF - Journal of Immunology
ER -
