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HSF-1-mediated cytoskeletal integrity determines thermotolerance and life span.

Science (New York, N.Y.) | 2014

The conserved heat shock transcription factor-1 (HSF-1) is essential to cellular stress resistance and life-span determination. The canonical function of HSF-1 is to regulate a network of genes encoding molecular chaperones that protect proteins from damage caused by extrinsic environmental stress or intrinsic age-related deterioration. In Caenorhabditis elegans, we engineered a modified HSF-1 strain that increased stress resistance and longevity without enhanced chaperone induction. This health assurance acted through the regulation of the calcium-binding protein PAT-10. Loss of pat-10 caused a collapse of the actin cytoskeleton, stress resistance, and life span. Furthermore, overexpression of pat-10 increased actin filament stability, thermotolerance, and longevity, indicating that in addition to chaperone regulation, HSF-1 has a prominent role in cytoskeletal integrity, ensuring cellular function during stress and aging.

Pubmed ID: 25324391 RIS Download

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Associated grants

  • Agency: NIA NIH HHS, United States
    Id: K99 AG042495
  • Agency: NIH HHS, United States
    Id: P40 OD010440
  • Agency: NCRR NIH HHS, United States
    Id: 5P41RR011823-17
  • Agency: Howard Hughes Medical Institute, United States
  • Agency: NCRR NIH HHS, United States
    Id: P41 RR011823
  • Agency: NIA NIH HHS, United States
    Id: R01 AG027463
  • Agency: NIA NIH HHS, United States
    Id: P01 AG031097
  • Agency: NIA NIH HHS, United States
    Id: R01AG027463-04
  • Agency: NIGMS NIH HHS, United States
    Id: P41 GM103533
  • Agency: NIA NIH HHS, United States
    Id: R00 AG042495
  • Agency: NIA NIH HHS, United States
    Id: 1K99AG042495-01A1
  • Agency: NIGMS NIH HHS, United States
    Id: 8 P41 GM103533-17

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Caenorhabditis Genetics Center (tool)

RRID:SCR_007341

Center that acquires, maintains, and distributes genetic stocks and information about stocks of the small free-living nematode Caenorhabditis elegans for use by investigators initiating or continuing research on this genetic model organism. A searchable strain database, general information about C. elegans, and links to key Web sites of use to scientists, including WormBase, WormAtlas, and WormBook are available.

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