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Because the deletion of self-reactive T cells is incomplete, thymic development of natural Foxp3 + CD4 + regulatory T (T reg) cells is required for preventing autoimmunity. However, the role of T cell receptor (TCR) specificity in thymic T reg cell development remains controversial. To address this issue, we generated a transgenic line expressing a(More)
The instruction of the immune system to be tolerant of self, thereby preventing autoimmunity, is facilitated by the education of T cells in a specialized organ, the thymus, in which self-reactive cells are either eliminated or differentiated into tolerogenic Foxp3(+) regulatory T (T(reg)) cells. However, it is unknown whether T cells are also educated to be(More)
Ten-eleven translocation (TET) enzymes oxidize 5-methylcytosine (5mC) to 5-hydroxymethylcytosine and other oxidized methylcytosines, intermediates in DNA demethylation. In this study, we examine the role of TET proteins in regulating Foxp3, a transcription factor essential for the development and function of regulatory T cells (T reg cells), a distinct(More)
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