Cited by 26DNA Repair MechanismsGenetic Neurodegenerative DiseasesEffects of Radiation Exposure

A nervous predisposition to unrepaired DNA double strand breaks

Reynolds, John J., Stewart, Grant S.·2013·DNA Repair

Abstract

Ataxia-telangiectasia (A-T) has for a long time stood apart from most other human neurodegenerative syndromes by the characteristic failure of cells derived from these patients to properly repair DNA damage-induced by ionizing radiation. The discovery of mutations in the ATM gene as being the underlying cause for A-T and the demonstration that the ATM protein functions as a DNA damage-responsive kinase has defined current research focusing on decoding how the cell responds to genotoxic stress. Yet, despite significant advances in delineating the cellular DNA damage response pathways coordinated by ATM, very little headway has been made toward understanding how loss of ATM leads to progressive cerebellar ataxia and whether this can be attributed to an underlying defect in DNA double strand break repair (DSBR). Since its identification, A-T has been used as the archetypal model for how a deficiency in DNA repair affects both the development and maintenance of the nervous and immune systems in humans as well as contributing to the process of tumourigenesis. However, following the growing availability and cost effectiveness of next generation sequencing technologies, the increasing recognition of novel human disorders associated with abnormal DNA repair has demonstrated that the neuropathology typified by A-T is an 'exception' rather than the 'rule'. As a consequence, this throws into doubt the longstanding hypothesis that the neurodegeneration seen in A-T is due to the progressive loss of damaged neurons that have acquired toxic levels of unrepaired DNA lesions over time. Therefore, this review aims to address the question: Is defective DNA double strand break repair an underlying cause of neurodegeneration?

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Crossref · 10.1016/j.dnarep.2013.04.011

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  • Ataxia telangiectasia results from a mutation in the ATM DNA damage sensing kinase.

    “One of the aging syndromes, ataxia telangiectasia (AT), results from a genetic defect in the DNA damage sensing kinase ataxia telangiectasia mutated (ATM) [72,73].”

    From T-cell aging in rheumatoid arthritis (2014) · cites this paper as [72]

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Authors
Reynolds, J. J., & Stewart, G. S.
Affiliations
University of Birmingham (GB)
Corresponding author
Stewart, Grant S.
Venue
DNA Repair
Publisher
Elsevier BV
Published
2013-08
Volume
12
Issue
8
Pages
588-599
ISSN
  • 1568-7856 (ISSN-L)
  • 1568-7864
OpenAlex
W2092119067
Cited by
26
References
137
Citations by year
2025: 1 · 2024: 3 · 2023: 2 · 2022: 1 · 2020: 1 · 2019: 2 · 2017: 1 · 2016: 2 · 2015: 3 · 2014: 7 · 2013: 3
FWCI
0.47
Type
journal article
Language
en
Open access
closed
Locations
  • DNA repair (publishedVersion)
  • PubMed (publishedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion)
Funders
Cancer Research UK (13030)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Genetic Neurodegenerative Diseases
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Effects of Radiation Exposure
Keywords
ataxia telangiectasia, ATM kinase, DNA double-strand break repair, neurodegeneration, cerebellar ataxia, radiosensitivity, DNA damage response, genotoxic stress, DNA repair disorders, neuronal loss
MeSH terms
Ataxia Telangiectasia, DNA Repair, Growth Disorders, Humans, Microcephaly, Mutation, Nervous System, Neurons, Radiation, Ionizing, Neurodegenerative Diseases, Genetic Predisposition to Disease, DNA Repair-Deficiency Disorders, Nijmegen Breakage Syndrome, DNA Breaks, Double-Stranded, Ataxia Telangiectasia Mutated Proteins

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