Abstract:
:The relationship between the T cell receptor (TCR) repertoires used by self-reactive transcription factor Foxp3-positive (Foxp3(+)) CD4(+) regulatory T cells (T(reg) cells) and nonregulatory T cells with autoimmune potential is unclear. Here we found that the TCR repertoire of thymic T(reg) cells in TCRbeta-transgenic mice was diverse and was more similar to that of peripheral T(reg) cells than that of nonregulatory T cells, suggesting that thymic T(reg) cells make a substantial contribution to the peripheral T(reg) cell population. Activated T cells in Foxp3-deficient mice, which lack T(reg) cells, 'preferentially' used TCRs found in the TCR repertoire of T(reg) cells in Foxp3-sufficient TCRbeta-transgenic mice, suggesting that these self-reactive TCRs contribute to the pathology of Foxp3-deficient mice. Our analyses suggest that T(reg) cells and potentially pathogenic autoimmune T cells use overlapping pools of self-reactive TCRs.
journal_name
Nat Immunoljournal_title
Nature immunologyauthors
Hsieh CS,Zheng Y,Liang Y,Fontenot JD,Rudensky AYdoi
10.1038/ni1318keywords:
subject
Has Abstractpub_date
2006-04-01 00:00:00pages
401-10issue
4eissn
1529-2908issn
1529-2916pii
ni1318journal_volume
7pub_type
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