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- W2895256126 abstract "Aging is accompanied by a pervasive collapse of proteostasis, while reducing general protein synthesis promotes longevity across taxa. Here, we show that the eIF4E isoform IFE-2 is increasingly sequestered in mRNA processing (P) bodies during aging and upon stress in Caenorhabditis elegans. Loss of the enhancer of mRNA decapping EDC-3 causes further entrapment of IFE-2 in P bodies and lowers protein synthesis rates in somatic tissues. Animals lacking EDC-3 are long lived and stress resistant, congruent with IFE-2-deficient mutants. Notably, neuron-specific expression of EDC-3 is sufficient to reverse lifespan extension, while sequestration of IFE-2 in neuronal P bodies counteracts age-related neuronal decline. The effects of mRNA decapping deficiency on stress resistance and longevity are orchestrated by a multimodal stress response involving the transcription factor SKN-1, which mediates lifespan extension upon reduced protein synthesis. Our findings elucidate a mechanism of proteostasis control during aging through P body-mediated regulation of protein synthesis in the soma." @default.
- W2895256126 created "2018-10-12" @default.
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- W2895256126 date "2018-10-01" @default.
- W2895256126 modified "2023-10-14" @default.
- W2895256126 title "Maintenance of Proteostasis by P Body-Mediated Regulation of eIF4E Availability during Aging in Caenorhabditis elegans" @default.
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- W2895256126 doi "https://doi.org/10.1016/j.celrep.2018.09.009" @default.
- W2895256126 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6180348" @default.
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- W2895256126 hasPublicationYear "2018" @default.
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