Regulation of FOXO Factors in Mammalian Cells

Curr Top Dev Biol. 2018;127:165-192. doi: 10.1016/bs.ctdb.2017.10.006. Epub 2017 Nov 15.


Forkhead box O (FOXO) transcription factors are central regulators of cellular homeostasis. FOXOs respond to a wide range of external stimuli, including growth factor signaling, oxidative stress, genotoxic stress, and nutrient deprivation. These signaling inputs regulate FOXOs through a number of posttranslational modifications, including phosphorylation, acetylation, ubiquitination, and methylation. Covalent modifications can affect localization, DNA binding, and interactions with other cofactors in the cell. FOXOs integrate the various modifications to regulate cell type-specific gene expression programs that are essential for metabolic homeostasis, redox balance, and the stress response. Together, these functions are critical for coordinating a response to environmental fluctuations in order to maintain cellular homeostasis during development and to support healthy aging.

Keywords: AKT; AMPK; DAF-16; FOXO; IKK; Insulin/IGF signaling; JNK; MAPK.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Adaptation, Physiological / genetics
  • Animals
  • DNA Damage
  • Forkhead Transcription Factors / genetics
  • Forkhead Transcription Factors / metabolism*
  • Gene Expression Regulation
  • Homeostasis*
  • Humans
  • Oxidative Stress
  • Protein Processing, Post-Translational*
  • Signal Transduction*


  • Forkhead Transcription Factors