Cited by 90Nuclear Structure and FunctionDNA Repair MechanismsEffects of Radiation Exposure

Lamin A/C-dependent interaction with 53BP1 promotes cellular responses to DNA damage

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Gibbs-Seymour, Ian, Markiewicz, Ewa, Bekker-Jensen, Simon, Mailand, Niels, Hutchison, Christopher J.·2015·Aging Cell

Abstract

Lamins A/C have been implicated in DNA damage response pathways. We show that the DNA repair protein 53BP1 is a lamin A/C binding protein. In undamaged human dermal fibroblasts (HDF), 53BP1 is a nucleoskeleton protein. 53BP1 binds to lamins A/C via its Tudor domain, and this is abrogated by DNA damage. Lamins A/C regulate 53BP1 levels and consequently lamin A/C-null HDF display a 53BP1 null-like phenotype. Our data favour a model in which lamins A/C maintain a nucleoplasmic pool of 53BP1 in order to facilitate its rapid recruitment to sites of DNA damage and could explain why an absence of lamin A/C accelerates aging.

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Authors
Gibbs-Seymour, I., Markiewicz, E., Bekker-Jensen, S., Mailand, N., & Hutchison, C. J.
Affiliations
  • School of Biological and Biomedical Sciences; Durham University; Mountjoy Science Park Durham DH1 3LE UK
  • Durham University (GB)
  • Ubiquitin Signaling Group; Department of Disease Biology; Novo Nordisk Foundation Center for Protein Research; University of Copenhagen; Copenhagen DK-2200 Denmark
  • University of Copenhagen (DK)
Corresponding author
Markiewicz, Ewa
Venue
Aging Cell
Publisher
Wiley
Published
2015-01-23
Volume
14
Issue
2
Pages
162-169
ISSN
1474-9718 (ISSN-L)
OpenAlex
W1970417373
Cited by
90
References
35
Citations by year
2026: 3 · 2025: 12 · 2024: 9 · 2023: 7 · 2022: 12 · 2021: 11 · 2020: 7 · 2019: 10 · 2018: 9 · 2017: 6 · 2016: 3 · 2015: 1
FWCI
2.75
Type
journal article
Language
en
Open access
Locations
  • Aging Cell (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, other-oa)
  • FedUni ResearchOnline (Federation University Australia) (submittedVersion, cc-by-nc-nd)
Funders
Biotechnology and Biological Sciences Research Council (BB/KO19260/1)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nuclear Structure and Function
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Effects of Radiation Exposure
Keywords
lamin A/C, 53BP1, DNA damage response, Tudor domain, nucleoskeleton, DNA repair, dermal fibroblasts, aging
MeSH terms
Tumor Suppressor p53-Binding Protein 1, DNA Damage, DNA Repair, Fibroblasts, Humans, Protein Binding, Protein Structure, Tertiary, Lamin Type A, Cell Line, Tumor, Intracellular Signaling Peptides and Proteins, HEK293 Cells

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