Journal
NATURE IMMUNOLOGY
Volume 12, Issue 9, Pages 898-U125Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ni.2084
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Funding
- German Research Foundation [Sonderforschungsbereich 832, SFB 704, INST 217/576-1, INST 217/577-1, SCHE 1562, SFB832]
- Wilhelm-Sander-Foundation
- German Cancer Aid
- German Jose-Carreras-Foundation
- Federal Ministry of Education and Research
- Leukemia and Lymphoma Society of America [R6029-07]
- Juvenile Diabetes Research Foundation [16-2008-643]
- University of California, San Francisco, Autoimmunity Center of Excellence
- National Health and Medical Research Council [339123, 565314]
- Juvenile Diabetes Research Foundation Collaborative Centers for Cell Therapy
- Juvenile Diabetes Research Foundation Center on Cord Blood Therapies for Type 1 Diabetes
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Regulatory T cells (T-reg cells) are essential for self-tolerance and immune homeostasis. Lack of effector T cell (T-eff cell) function and gain of suppressive activity by T-reg cells are dependent on the transcriptional program induced by Foxp3. Here we report that repression of SATB1, a genome organizer that regulates chromatin structure and gene expression, was crucial for the phenotype and function of T-reg cells. Foxp3, acting as a transcriptional repressor, directly suppressed the SATB1 locus and indirectly suppressed it through the induction of microRNAs that bound the SATB1 39 untranslated region. Release of SATB1 from the control of Foxp3 in T-reg cells caused loss of suppressive function, establishment of transcriptional T-eff cell programs and induction of T-eff cell cytokines. Our data support the proposal that inhibition of SATB1-mediated modulation of global chromatin remodeling is pivotal for maintaining T-reg cell functionality.
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