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Introduction to FOXO Biology

Wolfgang Link1

  • 1Instituto de Investigaciones Biomédicas "Alberto Sols" (CSIC-UAM), Arturo Duperier, Madrid, Spain. wlink222@gmail.com.

Methods in Molecular Biology (Clifton, N.J.)
|November 11, 2018
PubMed

Insights

Forkhead box O (FOXO) proteins regulate cellular homeostasis and are implicated in metabolic disorders and tumor suppression. Pharmaceutical interventions targeting FOXO-modifying enzymes offer potential for restoring their activity.

Area of Science:

  • Molecular Biology
  • Cellular Biology
  • Biochemistry

Background:

  • Forkhead box O (FOXO) proteins are crucial transcription factors regulating cellular homeostasis.
  • They control vital processes like energy production, oxidative stress resistance, and cell proliferation.
  • Dysregulation of FOXO proteins is linked to metabolic disorders, longevity, and tumor suppression.

Purpose of the Study:

  • To explore the role of FOXO proteins in cellular homeostasis.
  • To investigate the link between FOXO deregulation and various diseases.
  • To identify pharmaceutical strategies for restoring FOXO activity.

Main Methods:

  • Analysis of FOXO protein family members (FOXO1, FOXO3a, FOXO4, FOXO6).
  • Investigation of FOXO binding to target gene promoters.
  • Examination of posttranslational modifications controlling FOXO activity.

Main Results:

  • FOXO proteins are key regulators of cellular energy production, oxidative stress resistance, and cell viability.
  • FOXO deregulation is implicated in metabolic disorders, human longevity, and tumor suppression.
  • Posttranslational modifications inactivate FOXOs, often via overactivated upstream enzymes.

Conclusions:

  • FOXO proteins are essential for maintaining cellular homeostasis.
  • Pharmaceutical targeting of enzymes that modify FOXO activity presents a promising therapeutic avenue.
  • Restoring FOXO activity could be beneficial for treating metabolic disorders and cancer.
Keywords:
CancerDaf-16FOXO1FOXO3aFOXO4FOXO6LongevityPI3K/AKT pathway

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