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FOXO transcription factors as therapeutic targets in human diseases
Alba Orea-Soufi1, Jihye Paik2, José Bragança3
1Algarve Biomedical Center Research Institute (ABC-RI), University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal; Algarve Biomedical Center (ABC), University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal; Faculty of Medicine and Biomedical Sciences, Campus de Gambelas, 8005-139 Faro, Portugal.
Abstract:
Forkhead box (FOX)O proteins are transcription factors (TFs) with four members in mammals designated FOXO1, FOXO3, FOXO4, and FOXO6. FOXO TFs play a pivotal role in the cellular adaptation to diverse stress conditions. FOXO proteins act as context-dependent tumor suppressors and their dysregulation has been implicated in several age-related diseases. FOXO3 has been established as a major gene for human longevity. Accordingly, FOXO proteins have emerged as potential targets for the therapeutic development of drugs and geroprotectors. In this review, we provide an overview of the most recent advances in our understanding of FOXO regulation and function in various pathological conditions. We discuss strategies targeting FOXOs directly or by the modulation of upstream regulators, shedding light on the most promising intervention points. We also reveal the most relevant clinical indications and discuss the potential, trends, and challenges of modulating FOXO activity for therapeutic purposes.
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