DAF-16/Forkhead Box O Transcription Factor: Many Paths to a Single Fork(head) in the Road

Antioxid Redox Signal. 2011 Feb 15;14(4):623-34. doi: 10.1089/ars.2010.3490. Epub 2010 Nov 30.

Abstract

The Caenorhabditis elegans Forkhead box O transcription factor (FOXO) homolog DAF-16 functions as a central mediator of multiple biological processes such as longevity, development, fat storage, stress resistance, and reproduction. In C. elegans, similar to other systems, DAF-16 functions as the downstream target of a conserved, well-characterized insulin/insulin-like growth factor (IGF)-1 signaling pathway. This cascade is comprised of an insulin/IGF-1 receptor, which signals through a conserved PI 3-kinase/AKT pathway that ultimately downregulates DAF-16/FOXO activity. Importantly, studies have shown that multiple pathways intersect with the insulin/IGF-1 signaling pathway and impinge on DAF-16 for their regulation. Therefore, in C. elegans, the single FOXO family member, DAF-16, integrates signals from several pathways and then regulates its many downstream target genes.

Publication types

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

MeSH terms

  • Animals
  • Caenorhabditis elegans Proteins / genetics
  • Caenorhabditis elegans Proteins / metabolism
  • Forkhead Transcription Factors / genetics
  • Forkhead Transcription Factors / metabolism*
  • Humans
  • Models, Biological
  • Transcription Factors / genetics
  • Transcription Factors / metabolism

Substances

  • Caenorhabditis elegans Proteins
  • Forkhead Transcription Factors
  • Transcription Factors
  • daf-16 protein, C elegans