Cited by 131Ubiquitin and proteasome pathwaysGenetics, Aging, and Longevity in Model OrganismsHeat shock proteins research

Impact of ageing on proteasome structure and function in human lymphocytes

Carrard, Géraldine, Dieu, Marc, Raes, Martine, Toussaint, Olivier, Friguet, Bertrand·2003·The International Journal of Biochemistry & Cell Biology

Abstract

Key actors of the immune response, lymphocytes exhibit functional deficits with advancing age. For instance, the age-related decline in lymphocyte proliferation may be related to alteration in the degradation of crucial proteins such as cell-cycle regulators. Degradation of these proteins is mediated by the ubiquitin-26S proteasome system. The proteasome is also the major "housekeeping" proteolytic complex responsible for eliminating intracellular damaged proteins. To investigate the occurrence of proteasome structural and functional age-related alterations, 26S proteasome was purified from peripheral blood lymphocytes of 20-63-year-old donors. Changes in peptidase activity were measured and modifications in the proteasome particle structure were analysed using bi-dimensional electrophoresis. We found the age-related decline of 26S proteasome-specific activity to be associated with an increased yield of post-translational modifications of proteasome subunits, while proteasome content and subunit composition were unchanged. In particular, some catalytic and assembly subunits of the 20S proteasome were preferentially modified with age. Western blotting of proteasome subunits resolved by bi-dimensional electrophoresis showed some of these modified subunits to be glycated, conjugated with a lipid peroxidation product and/or ubiquitinated. In conclusion, it is suggested that structural alterations of proteasome subunits may contribute to the observed decline of proteasome activity with age and could play a major role in immune senescence.

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Crossref · 10.1016/s1357-2725(02)00356-4

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  • Many reports show different degrees of decrease in the activity of the proteasome with age in several tissues, although the decline in activity with age does not seem to be universal.

    “Many reports have shown different degrees of decrease in the activity of the proteasome with age in several tissues, although, in contrast to the lysosomal system, the decline in activity with age does not seem to be universal (Carrard et al., 2003; Ferrington et al., 2005; Keller et al., 2000 b; Shibatani et al., 1996).”

    From Protein Homeostasis and Aging: the importance of exquisite quality control (2011) · cites this paper as Carrard et al., 2003

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Authors
Carrard, G., Dieu, M., Raes, M., Toussaint, O., & Friguet, B.
Affiliations
  • Université Paris Diderot (FR)
  • University of Namur (BE)
Corresponding author
Friguet, Bertrand
Venue
The International Journal of Biochemistry & Cell Biology
Publisher
Elsevier BV
Published
2003-05
Volume
35
Issue
5
Pages
728-739
ISSN
1357-2725 (ISSN-L)
OpenAlex
W1968569587
Cited by
131
References
42
Citations by year
2026: 1 · 2025: 4 · 2024: 3 · 2023: 3 · 2022: 7 · 2021: 4 · 2020: 2 · 2019: 3 · 2018: 5 · 2017: 3 · 2016: 6 · 2015: 8 · 2014: 8 · 2013: 4 · 2012: 7
FWCI
3.33
Type
journal article
Language
en
Open access
closed
Locations
  • The International Journal of Biochemistry & Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
  • Digital Access to Libraries (submittedVersion)
  • Repository of the University of Namur (submittedVersion)
Funders
European Commission
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 › Heat shock proteins research
Keywords
aging, 26S proteasome, proteasome structure, proteasome activity, lymphocytes, immunosenescence, post-translational modification, proteasome subunits, glycation, lipid peroxidation, ubiquitination, proteolytic activity, protein degradation, cell cycle regulators
MeSH terms
Adult, Aging, Cysteine Endopeptidases, Electrophoresis, Humans, Lymphocytes, Middle Aged, Multienzyme Complexes, Peptide Hydrolases, Phosphorylation, Ubiquitins, Blotting, Western, Oxidative Stress, Spectrometry, Mass, Electrospray Ionization, Proteasome Endopeptidase Complex

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