Cited by 229DNA Repair MechanismsNeurogenesis and neuroplasticity mechanismsGenetics, Aging, and Longevity in Model Organisms

Maintaining genome stability in the nervous system

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McKinnon, Peter J·2013·Nature Neuroscience

Abstract

Active maintenance of genome stability is a prerequisite for the development and function of the nervous system. The high replication index during neurogenesis and the long life of mature neurons highlight the need for efficient cellular programs to safeguard genetic fidelity. Multiple DNA damage response pathways ensure that replication stress and other types of DNA lesions, such as oxidative damage, do not affect neural homeostasis. Numerous human neurologic syndromes result from defective DNA damage signaling and compromised genome integrity. These syndromes can involve different neuropathology, which highlights the diverse maintenance roles that are required for genome stability in the nervous system. Understanding how DNA damage signaling pathways promote neural development and preserve homeostasis is essential for understanding fundamental brain function.

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  • In neurons, base excision repair, the main pathway for repairing oxidative DNA damage, is reduced in elderly humans and in Alzheimer's disease patients.

    “In neurons, BER, the primary pathway for the repair of oxidative DNA damage, is reduced in elderly humans and in AD patients (Hou et al., 2018; McKinnon, 2013).”

    From NAD+ in Brain Aging and Neurodegenerative Disorders (2019) · cites this paper as McKinnon, 2013

  • Neurons' long lifespan and lack of sister chromatids for homologous recombination repair leave them vulnerable to DSBs.

    “Neurons’ long lifespan and the lack of sister chromatids for homologous recombination repair leave them vulnerable to DSBs”
  • Increased levels of both SSBs and DSBs are documented in AD, HD, PD, and ALS, and their accumulation correlates with important milestones in disease progression.

    “A plethora of studies document increased levels of both SSBs and DSBs in AD, HD, PD, and ALS (Mullaart et al, 1990; Adamec et al, 1999; McKinnon, 2013, 2017; Madabhushi et al, 2014; Alt & Schwer, 2018; Shanbhag et al, 2019; Thadathil et al, 2021), and their accumulation seem to correlate with important milestones in disease progression.”

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  1. [30]Shull ER Differential DNA damage signaling accounts for distinct neural apoptotic responses in ATLD and NBS Genes Dev 2009 23 171 180 19171781 PMC2648541

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Authors
McKinnon, P. J.
Affiliations
St. Jude Children's Research Hospital (US)
Corresponding author
McKinnon, Peter J
Venue
Nature Neuroscience
Published
2013-10-28
Volume
16
Issue
11
Pages
1523-1529
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W2000559850
Cited by
229
References
100
Citations by year
2026: 12 · 2025: 15 · 2024: 14 · 2023: 14 · 2022: 18 · 2021: 23 · 2020: 19 · 2019: 21 · 2018: 17 · 2017: 23 · 2016: 24 · 2015: 15 · 2014: 13
FWCI
1.63
Type
journal article
Language
en
Open access
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Cancer Institute (CA96832, P 30CA 21765, P01CA096832, P30CA021765)
  • National Institute of Neurological Disorders and Stroke (NS37956, R56NS037956, R01NS037956)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
genome stability, DNA damage response, nervous system, postmitotic neurons, neurogenesis, brain development, aging, replication stress, oxidative DNA damage, neurological syndromes, neuronal homeostasis, DNA repair
MeSH terms
Animals, DNA Damage, DNA Repair, Humans, Nervous System, Nervous System Diseases, Genomic Instability

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