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Post-translational modification networks regulating FOXP3 function.

Jorg van Loosdregt1, Paul J Coffer2

  • 1Division of Pediatrics, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, The Netherlands; Department of Cell Biology, University Medical Center Utrecht, Utrecht, The Netherlands.

Trends in Immunology
|July 23, 2014
PubMed
Summary
This summary is machine-generated.

Regulatory T (Treg) cells are crucial for immune homeostasis, controlled by the transcription factor FOXP3. Post-translational modifications (PTMs) like acetylation and phosphorylation dynamically regulate FOXP3 activity and Treg cell function.

Keywords:
Forkhead box P3immune homeostasispost-translational modificationsregulatory T cells

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Area of Science:

  • Immunology
  • Molecular Biology
  • Cellular Biology

Background:

  • Forkhead box (FOX)P3 is essential for regulatory T (Treg) cell development and function.
  • Treg cells play a critical role in maintaining immune homeostasis.
  • Post-translational modifications (PTMs) are known to regulate transcription factor activity.

Purpose of the Study:

  • To review the current understanding of how PTMs regulate FOXP3.
  • To explore the impact of these modifications on Treg cell biology and immune homeostasis.
  • To discuss the challenges and opportunities in translating PTM findings into in vivo functions.

Main Methods:

  • Literature review of existing studies on FOXP3 and its PTMs.
  • Analysis of biochemical mechanisms controlling FOXP3 activity (DNA binding, transactivation, degradation).
  • Contextualization of findings within Treg cell biology.

Main Results:

  • FOXP3 function is modulated by various PTMs, including acetylation, ubiquitination, and phosphorylation.
  • These modifications influence FOXP3's DNA binding, transactivation potential, and susceptibility to proteasomal degradation.
  • PTMs provide a mechanism for transiently controlling FOXP3 activity in response to environmental cues.

Conclusions:

  • Understanding FOXP3 PTMs is key to comprehending Treg cell function and immune homeostasis.
  • Translating in vitro biochemical findings on FOXP3 PTMs to in vivo relevance presents challenges.
  • Further research into the molecular mechanisms of FOXP3 regulation offers therapeutic opportunities.