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  • Title: DAF-16: FOXO in the Context of C. elegans.
    Author: Tissenbaum HA.
    Journal: Curr Top Dev Biol; 2018; 127():1-21. PubMed ID: 29433733.
    Abstract:
    In Caenorhabditis elegans, there is a single FOXO transcription factor homolog, encoded by the gene, daf-16. As a central regulator for multiple signaling pathways, DAF-16 integrates these signals which results in modulation of several biological processes including longevity, development, fat storage, stress resistance, innate immunity, and reproduction. Using C. elegans allows for studies of FOXO in the context of the whole animal. Therefore, manipulating levels or the activity of daf-16 results in phenotypic changes. Genetic and molecular analysis revealed that similar to other systems, DAF-16 is the downstream target of the conserved insulin/IGF-1 signaling (IIS) pathway; a PI 3-kinase/AKT signaling cascade that ultimately controls the regulation of DAF-16 nuclear localization. In this chapter, I will focus on understanding how a single gene daf-16 can incorporate signals from multiple upstream pathways and in turn modulate different phenotypes as well as the study of FOXO in the context of a whole organism.
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