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Journal Article
Review
Post-translational modification networks regulating FOXP3 function.
Trends in Immunology 2014 August
Forkhead box (FOX)P3 is a requisite transcription factor for the development and maintenance of immunosuppressive function of regulatory T (Treg) cells, and therefore for immune homeostasis. Post-translational modifications (PTMs) can transiently alter the functionality of transcription factors, and recent evidence reveals that FOXP3 can be regulated by various PTMs including acetylation, ubiquitination, and phosphorylation. Here, we review the current understanding of how these modifications control FOXP3, including regulation of DNA binding, transactivation potential, and proteasomal degradation. We place these findings in the context of the biology of Treg cells, and discuss both limitations in translating biochemical findings into in vivo functions and the opportunities presented by a better understanding of the molecular mechanisms that can transiently control FOXP3 activity in response to environmental cues.
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