FOXO Transcription Factors: A Brief Overview.
Abstract
Forkhead box O (FOXO) transcription factors constitute a mammalian family of proteins, comprising FOXO1, FOXO3, FOXO4, and FOXO6. Originally recognized as downstream regulators within the insulin pathway, FOXO factors exhibit the ability to bind to diverse target gene promoters, thereby governing crucial facets of cellular homeostasis. These encompass cellular energy generation, resilience against oxidative stress, and the modulation of cell viability and proliferation. The dysregulation of FOXO proteins has been established as pivotal in metabolic disorders, human longevity, and the inhibition of tumorigenesis. Notably subject to posttranslational modifications for regulation, FOXO inactivation predominantly arises from excessive activation of their upstream modifying enzymes, presenting a plethora of potential avenues for pharmaceutical reinstatement of FOXO activity.
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Research summary
The paper discusses FOXO transcription factors and their role in cellular homeostasis, metabolic disorders, and tumorigenesis, which are relevant to aging and longevity research. However, it primarily focuses on the mechanisms and potential pharmaceutical interventions rather than directly addressing the root causes of aging or lifespan extension. Thus, while it contributes to the understanding of factors related to longevity, its impact is limited and more incremental than groundbreaking.
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