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- W3040950932 abstract "Abstract Dietary restriction (DR) increases life span and improves health in most model systems tested, including non-human primates. In C. elegans , as in other models, DR leads to reprogramming of metabolism, improvements in mitochondrial health, large changes in gene expression, including increase in expression of cytoprotective genes, better proteostasis etc. Understandably, multiple global transcriptional regulators like transcription factors FOXO/DAF-16, FOXA/PHA-4, HSF1/HSF-1 and NRF2/SKN-1 are important for DR longevity. Considering the wide-ranging effects of p53 on organismal biology, we asked whether the C. elegans ortholog, CEP-1 is required for DR-mediated longevity assurance. We employed the widely-used TJ1 strain of cep-1(gk138) . We show that cep-1(gk138) suppresses the life span extension of two genetic paradigms of DR, but two non-genetic modes of DR remain unaffected in this strain. We find that in cep-1(gk138) , two aspects of DR, increased autophagy and the up-regulation of expression of cytoprotective xenobiotic detoxification program (cXDP) genes are dampened. Importantly, we find that background mutation(s) in the strain may be the actual cause for the phenotypic differences that we observed and cep-1 may not be directly involved in genetic DR-mediated longevity assurance in worms. Identifying these mutation(s) may reveal a novel regulator of longevity required specifically by genetic modes of DR." @default.
- W3040950932 created "2020-07-16" @default.
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- W3040950932 date "2020-07-10" @default.
- W3040950932 modified "2023-09-27" @default.
- W3040950932 title "The genetic paradigms of dietary restriction fail to extend life span in cep-1(gk138) mutant of C. elegans p53 due to possible background mutations" @default.
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- W3040950932 doi "https://doi.org/10.1101/2020.07.09.195503" @default.
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