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The promiscuous expression of tissue-restricted antigens in the thymus, driven in part by autoimmune regulator (Aire), is critical for the protection of peripheral tissues from autoimmune attack. Aire-dependent processes are thought to promote both clonal deletion and the development of Foxp3+ regulatory T (Treg) cells, suggesting that autoimmunity associated with Aire deficiency results from two...
Although antigen recognition mediated by the T cell receptor (TCR) influences many facets of Foxp3+ regulatory T (Treg) cell biology, including development and function, the cell types that present antigen to Treg cells in vivo remain largely undefined. By tracking a clonal population of Aire-dependent, prostate-specific Treg cells in mice, we demonstrated an essential role for dendritic cells (DCs)...
Treg cells and the programed death‐1/programed death ligand‐1 (PD‐1/PD‐L1) pathway are both critical for maintaining peripheral tolerance to self‐Ags. A significant subset of Treg cells constitutively expresses PD‐1, which prompted an investigation into the role of PD‐1/PD‐L1 interactions in Treg‐cell development, function, and induction in vivo. The phenotype and abundance of Treg cells was not significantly...
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