Genes that act downstream of DAF-16 to influence the lifespan of Caenorhabditis elegans - PubMed
- ️Wed Jan 01 2003
. 2003 Jul 17;424(6946):277-83.
doi: 10.1038/nature01789. Epub 2003 Jun 29.
Affiliations
- PMID: 12845331
- DOI: 10.1038/nature01789
Genes that act downstream of DAF-16 to influence the lifespan of Caenorhabditis elegans
Coleen T Murphy et al. Nature. 2003.
Abstract
Ageing is a fundamental, unsolved mystery in biology. DAF-16, a FOXO-family transcription factor, influences the rate of ageing of Caenorhabditis elegans in response to insulin/insulin-like growth factor 1 (IGF-I) signalling. Using DNA microarray analysis, we have found that DAF-16 affects expression of a set of genes during early adulthood, the time at which this pathway is known to control ageing. Here we find that many of these genes influence the ageing process. The insulin/IGF-I pathway functions cell non-autonomously to regulate lifespan, and our findings suggest that it signals other cells, at least in part, by feedback regulation of an insulin/IGF-I homologue. Furthermore, our findings suggest that the insulin/IGF-I pathway ultimately exerts its effect on lifespan by upregulating a wide variety of genes, including cellular stress-response, antimicrobial and metabolic genes, and by downregulating specific life-shortening genes.
Comment in
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Ageing: Microarraying mortality.
Gems D, McElwee JJ. Gems D, et al. Nature. 2003 Jul 17;424(6946):259-61. doi: 10.1038/424259a. Nature. 2003. PMID: 12867961 No abstract available.
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