Abstract
Augmentation of proteasome machinery is emerging as a significant gerontomodulatory consequence of hormetic stimulation, such as mild heat stress. This study describes the phenomenon we term hormetic proteasomal oscillation, wherein mildly heat-stressed human fibroblasts (41 degrees C, 1 h) display an adaptation response pattern in proteasome activity. Remarkably, such response appears to be diverse in severely heat-stressed or senescent fibroblasts. This proteasomal oscillation, as an innate cellular reaction to heat and aging, however, is independent of 20S proteasome protein levels and nuclear factor-E2-related factor 2 (Nrf2) transactivation.
Original language | English |
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Journal | New York Academy of Sciences. Annals |
Volume | 1067 |
Pages (from-to) | 224-7 |
Number of pages | 3 |
ISSN | 0077-8923 |
DOIs | |
Publication status | Published - 2006 |
Keywords
- Adult
- Cell Aging
- Cells, Cultured
- Female
- Fibroblasts
- Heat-Shock Response
- Humans
- Proteasome Endopeptidase Complex
- Skin Aging
- Time Factors