Cited by 30Ubiquitin and proteasome pathwaysGenetics, Aging, and Longevity in Model OrganismsRedox biology and oxidative stress

Age-related loss of stress-induced nuclear proteasome activation is due to low PARP-1 activity

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Bakondi, Edina, Catalgol, Betul, Bak, Istvan, Jung, Tobias, Bozaykut, Perinur, Bayramicli, Mehmet, Ozer, Nesrin Kartal, Grune, Tilman·2011·Free Radical Biology and Medicine

Abstract

Changes in protein turnover are among the dominant metabolic changes during aging. Of special importance is the maintenance of nuclear protein homeostasis to ensure a coordinated cellular metabolism. Therefore, in the nucleus a special PARP-1-mediated mechanism of proteasomal activation exists to ensure a rapid degradation of oxidized nuclear proteins. It was already demonstrated earlier that the cytosolic proteasomal system declines dramatically with aging, whereas the nuclear proteasome remains less affected. We demonstrate here that the stress-mediated proteasomal activation in the nucleus declines during replicative senescence of human fibroblasts. Furthermore, we clearly show that this decline in the PARP-1-mediated proteasomal activation is due to a decline in the expression and activity of PARP-1 in senescent fibroblasts. In a final study we show that this process also happens in vivo, because the protein expression level of PARP-1 is significantly lower in the skin of aged donors compared to that of young ones. Therefore, we conclude that the rate-limiting factor in poly(ADP-ribose)-mediated proteasomal activation in oxidative stress is PARP-1 and not the nuclear proteasome itself.

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Crossref · 10.1016/j.freeradbiomed.2010.10.700

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Authors
Bakondi, E., Catalgol, B., Bak, I., Jung, T., Bozaykut, P., Bayramicli, M., Ozer, N. K., & Grune, T.
Affiliations
  • University of Hohenheim (DE)
  • Marmara University (TR)
Corresponding author
Grune, Tilman
Venue
Free Radical Biology and Medicine
Publisher
Elsevier BV
Published
2011-01
Volume
50
Issue
1
Pages
86-92
ISSN
0891-5849 (ISSN-L)
OpenAlex
W1979724580
Cited by
30
References
74
Citations by year
2025: 2 · 2022: 1 · 2021: 1 · 2020: 2 · 2019: 2 · 2018: 1 · 2017: 1 · 2016: 4 · 2015: 4 · 2014: 4 · 2012: 7
FWCI
1.04
Type
journal article
Language
en
Open access
Locations
  • Free Radical Biology and Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • University of Debrecen Electronic Archive (University of Debrecen) (submittedVersion, other-oa)
  • Dspace Repository (Marmara Üniversitesi) (submittedVersion)
  • Dspace Repository (Marmara Üniversitesi) (submittedVersion, other-oa)
Funders
  • Alexander von Humboldt-Stiftung
  • Deutsche Forschungsgemeinschaft
  • Magyar Tudományos Akadémia
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
PARP1, nuclear proteasome, proteasome activation, aging, replicative senescence, human fibroblasts, oxidative stress, poly(ADP-ribose), protein turnover, skin aging
MeSH terms
Poly(ADP-ribose) Polymerase Inhibitors, Poly (ADP-Ribose) Polymerase-1, Aging, Benzamides, Biopsy, Cell Nucleus, Cell Survival, Cells, Cultured, Enzyme Activation, Enzyme Inhibitors, Fibroblasts, Humans, Hydrogen Peroxide, Poly Adenosine Diphosphate Ribose, Poly(ADP-ribose) Polymerases, Down-Regulation, Cellular Senescence, Oxidative Stress, Proteasome Endopeptidase Complex, Cell Proliferation

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