Cited by 637Telomeres, Telomerase, and SenescenceCancer-related Molecular PathwaysGenetics, Aging, and Longevity in Model Organisms

The DOI matches its Crossref record; 44 of the 45 references it cites were found in a registry or an index.

Plasminogen activator inhibitor-1 is a critical downstream target of p53 in the induction of replicative senescence

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Abstract

p53 limits the proliferation of primary diploid fibroblasts by inducing a state of growth arrest named replicative senescence - a process which protects against oncogenic transformation and requires integrity of the p53 tumour suppressor pathway. However, little is known about the downstream target genes of p53 in this growth-limiting response. Here, we report that suppression of the p53 target gene encoding plasminogen activator inhibitor-1 (PAI-1) by RNA interference (RNAi) leads to escape from replicative senescence both in primary mouse embryo fibroblasts and primary human BJ fibroblasts. PAI-1 knockdown results in sustained activation of the PI(3)K-PKB-GSK3beta pathway and nuclear retention of cyclin D1, consistent with a role for PAI-1 in regulating growth factor signalling. In agreement with this, we find that the PI(3)K-PKB-GSK3beta-cyclin D1 pathway is also causally involved in cellular senescence. Conversely, ectopic expression of PAI-1 in proliferating p53-deficient murine or human fibroblasts induces a phenotype displaying all the hallmarks of replicative senescence. Our data indicate that PAI-1 is not merely a marker of senescence, but is both necessary and sufficient for the induction of replicative senescence downstream of p53.

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Metadata

Authors
Kortlever, R. M., Higgins, P. J., & Bernards, R.
Affiliations
  • The Netherlands Cancer Institute (NL)
  • Albany Medical College (US)
Corresponding author
Bernards, René
Venue
Nature Cell Biology
Published
2006-07-23
Volume
8
Issue
8
Pages
877-884
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W1978888457
Cited by
637
References
45
Citations by year
2026: 28 · 2025: 27 · 2024: 23 · 2023: 36 · 2022: 35 · 2021: 32 · 2020: 35 · 2019: 29 · 2018: 31 · 2017: 34 · 2016: 29 · 2015: 27 · 2014: 36 · 2013: 27 · 2012: 34
FWCI
18.34
Type
journal article
Language
en
Open access
Locations
  • Nature Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Utrecht University Repository (Utrecht University) (submittedVersion, other-oa)
Funders
  • KWF Kankerbestrijding
  • National Institutes of Health
  • National Institute of General Medical Sciences (GM57242, R01GM057242)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Telomeres, Telomerase, and Senescence
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
plasminogen activator inhibitor-1, p53, replicative senescence, cellular senescence, cyclin D1, p53 target genes, fibroblasts, tumor suppressor pathways, growth arrest, oncogenic transformation
MeSH terms
Glycogen Synthase Kinase 3 beta, Animals, Cells, Cultured, Cisplatin, DNA Damage, Embryo, Mammalian, Fibroblasts, Humans, Microscopy, Fluorescence, Mutation, Blotting, Western, Tumor Suppressor Protein p53, Cellular Senescence, Plasminogen Activator Inhibitor 1, Phosphatidylinositol 3-Kinases, Cyclin-Dependent Kinase Inhibitor p16, Tumor Suppressor Protein p14ARF, RNA Interference, Glycogen Synthase Kinase 3, NIH 3T3 Cells, Cell Proliferation, Cyclin-Dependent Kinase Inhibitor p21, Proto-Oncogene Proteins c-akt, Cyclin-Dependent Kinase 4, Mice

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