Cited by 247DNA Repair MechanismsRedox biology and oxidative stressEffects of Radiation Exposure

The DOI matches its Crossref record; 225 of the 225 references it cites were found in a registry or an index; 13 of the 239 sources its claims cite were checked for support.

Functional interplay between ATM/ATR-mediated DNA damage response and DNA repair pathways in oxidative stress

Open access
Yan, Shan, Sorrell, Melanie, Berman, Zachary·2014·Cellular and Molecular Life Sciences

Abstract

To maintain genome stability, cells have evolved various DNA repair pathways to deal with oxidative DNA damage. DNA damage response (DDR) pathways, including ATM-Chk2 and ATR-Chk1 checkpoints, are also activated in oxidative stress to coordinate DNA repair, cell cycle progression, transcription, apoptosis, and senescence. Several studies demonstrate that DDR pathways can regulate DNA repair pathways. On the other hand, accumulating evidence suggests that DNA repair pathways may modulate DDR pathway activation as well. In this review, we summarize our current understanding of how various DNA repair and DDR pathways are activated in response to oxidative DNA damage primarily from studies in eukaryotes. In particular, we analyze the functional interplay between DNA repair and DDR pathways in oxidative stress. A better understanding of cellular response to oxidative stress may provide novel avenues of treating human diseases, such as cancer and neurodegenerative disorders.

Overview

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TL;DR

This review summarizes how oxidative stress activates ATM-Chk2 and ATR-Chk1 DNA damage response (DDR) pathways and how these pathways functionally interact with DNA repair pathways such as BER/SSBR, NER, MMR, HR, and NHEJ. It argues that DDR and DNA repair are integrated networks in oxidative stress, with unresolved questions about crosstalk and disease relevance.

Key findings

  • Oxidative stress is estimated to induce approximately 10,000 DNA alterations per cell per day, and can generate base damage, AP sites, SSBs, DSBs, crosslinks, stalled replication forks, and oxidatively-generated clustered DNA lesions.
  • ATM-Chk2 is activated primarily by DSBs, but oxidative stress can also activate ATM, as shown by hydrogen peroxide-induced ATM autophosphorylation at Serine 1981, p53 phosphorylation at Serine 15, and Chk2 phosphorylation at Threonine 68, even without H2AX phosphorylation at Serine 139.
  • ATR-Chk1 is activated by replication stress and other damage; hyperoxia (95% oxygen versus normal 21% oxygen) induced ATR-dependent but ATM-independent Chk1 phosphorylation at Serine 345 and p53 phosphorylation in A549 cells.
  • DDR pathways regulate DNA repair, and DNA repair proteins also regulate DDR: for example, Chk2-dependent XRCC1 phosphorylation at Threonine 284 promotes XRCC1 recruitment, ATM-dependent TDP1 phosphorylation at Serine 81 facilitates TDP1 recruitment, and APE2 is required for ATR-Chk1 checkpoint activation in oxidative stress.

Methods

  • Design: narrative review of current understanding of oxidative stress-induced DNA damage, DDR pathways, and DNA repair pathways, primarily from studies in eukaryotes.
  • Data or sample: no primary experimental sample; the paper synthesizes published literature and cites studies in human cell lines, Xenopus egg extracts, yeast, and other model systems.
  • Main analysis: conceptual synthesis of ATM-Chk2 and ATR-Chk1 activation mechanisms, crosstalk between them, and functional connections with BER/SSBR, NER, MMR, HR, and NHEJ, supported by schematic figures.

Limitations

  • Stated in the paper: it remains challenging to quantitatively measure oxidatively-generated DNA damage without measuring intermediate repair products; it is elusive how accumulation of unrepaired oxidative DNA damage leads to cancer and neurodegenerative diseases; more investigation is needed on interplay between ATM/ATR-mediated DDR and DNA damage tolerance pathways; and it is unclear how ATM-Chk2 and ATR-Chk1 crosstalk in oxidative stress.
  • Evident from the text: this is a narrative review rather than a systematic review or meta-analysis, and it focuses on higher eukaryotic model organisms.
  • Evident from the text: many mechanistic details remain unresolved, including exactly how DDR pathways regulate DNA repair in oxidative stress, whether ATR or Chk1 kinase activity directly regulates BER, and how the 9-1-1 complex stimulates BER at nearly all steps.

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Integrity signals

Registry

Crossref · 10.1007/s00018-014-1666-4

Cites

225 of 225 references verified0 citation errors · 0 not checkable

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Metadata

Authors
Yan, S., Sorrell, M., & Berman, Z.
Affiliations
University of North Carolina at Charlotte (US)
Corresponding author
Yan, Shan
Venue
Cellular and Molecular Life Sciences
Published
2014-06-20
Volume
71
Issue
20
Pages
3951-3967
ISSN
  • 1420-682X (ISSN-L)
  • 1420-9071
OpenAlex
W2033918102
Cited by
247
References
225
Citations by year
2026: 23 · 2025: 11 · 2024: 24 · 2023: 11 · 2022: 32 · 2021: 26 · 2020: 25 · 2019: 22 · 2018: 23 · 2017: 18 · 2016: 16 · 2015: 14 · 2014: 2
FWCI
1.57
Type
journal article
Language
en
Open access
Locations
  • Cellular and Molecular Life Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of General Medical Sciences (R15GM101571)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Effects of Radiation Exposure
Keywords
DNA damage response, DNA repair pathways, oxidative DNA damage, oxidative stress, genome stability, cell cycle checkpoints, apoptosis, cellular senescence, cancer, neurodegenerative diseases
MeSH terms
Checkpoint Kinase 1, DNA Damage, DNA Repair, DNA-Binding Proteins, Humans, Protein Kinases, Signal Transduction, Oxidative Stress, Ataxia Telangiectasia Mutated Proteins, Checkpoint Kinase 2

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