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Folly Beach Library
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Regulatory T cells generated early in life play a distinct role in maintaining self-tolerance.
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- Author(s): Siyoung Yang; Noriyuki Fujikado; Kolodin, Dmitriy; Benoist, Christophe; Mathis, Diane
- Source:
Science. 5/1/2015, Vol. 348 Issue 6234, p589-594. 6p. - Source:
- Additional Information
- Subject Terms:
- Abstract: Aire is an important regulator of immunological tolerance, operating in a minute subset of thymic stromal cells to induce transcripts encoding peptides that guide T cell selection. Expression of Aire during a perinatal age window is necessary and sufficient to prevent the multiorgan autoimmunity characteristic of Aire-deficient mice. We report that Aire promotes the perinatal generation of a distinct compartment of Foxp3+CD4+ regulatory T (Treg) cells, which stably persists in adult mice. This population has a role in maintaining self-tolerance, a transcriptome and an activation profile distinguishable from those of Tregs produced in adults. Underlying the distinct Treg populations are age-dependent, Aire-independent differences in the processing and presentation of thymic stromal-cell peptides, resulting in different T cell receptor repertoires. Our findings expand the notion of a developmentally layered immune system. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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