Abstract
Aire is a transcriptional regulator that induces the promiscuous expression of thousands of tissue-restricted antigens (TRAs) in medullary thymic epithelial cells (mTECs), a step critical for the induction of immunological self-tolerance. Studies have offered molecular insights into how Aire operates, but more comprehensive understanding of this process still remains elusive. Here we found abundant expression of the protein deacetylase Sirtuin-1 (Sirt1) in mature Aire + mTECs, wherein it was required for the expression of Aire-dependent TRA-encoding genes and the subsequent induction of immunological self-tolerance. Our study elucidates a previously unknown molecular mechanism for Aire-mediated transcriptional regulation and identifies a unique function for Sirt1 in preventing organ-specific autoimmunity.
Original language | English |
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Pages (from-to) | 737-745 |
Number of pages | 9 |
Journal | Nature Immunology |
Volume | 16 |
Issue number | 7 |
Early online date | 25 May 2015 |
DOIs | |
Publication status | Published - 20 Jul 2015 |
All Science Journal Classification (ASJC) codes
- Immunology and Allergy
- Immunology