Regulation of aging and age-related disease by DAF-16 and heat-shock factor - PubMed
- ️Wed Jan 01 2003
. 2003 May 16;300(5622):1142-5.
doi: 10.1126/science.1083701.
Affiliations
- PMID: 12750521
- DOI: 10.1126/science.1083701
Regulation of aging and age-related disease by DAF-16 and heat-shock factor
Ao-Lin Hsu et al. Science. 2003.
Erratum in
- Science. 2003 Jun 27;300(5628):2033
Abstract
The Caenorhabditis elegans transcription factor HSF-1, which regulates the heat-shock response, also influences aging. Reducing hsf-1 activity accelerates tissue aging and shortens life-span, and we show that hsf-1 overexpression extends lifespan. We find that HSF-1, like the transcription factor DAF-16, is required for daf-2-insulin/IGF-1 receptor mutations to extend life-span. Our findings suggest this is because HSF-1 and DAF-16 together activate expression of specific genes, including genes encoding small heat-shock proteins, which in turn promote longevity. The small heat-shock proteins also delay the onset of polyglutamine-expansion protein aggregation, suggesting that these proteins couple the normal aging process to this type of age-related disease.
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