Cited by 62Memory and Neural MechanismsDNA Repair MechanismsGenomics and Chromatin Dynamics

Profiling DNA break sites and transcriptional changes in response to contextual fear learning

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Stott, Ryan T., Kritsky, Oleg, Tsai, Li-Huei·2021·PLOS ONE

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Abstract

Neuronal activity generates DNA double-strand breaks (DSBs) at specific loci in vitro and this facilitates the rapid transcriptional induction of early response genes (ERGs). Physiological neuronal activity, including exposure of mice to learning behaviors, also cause the formation of DSBs, yet the distribution of these breaks and their relation to brain function remains unclear. Here, following contextual fear conditioning (CFC) in mice, we profiled the locations of DSBs genome-wide in the medial prefrontal cortex and hippocampus using γH2AX ChIP-Seq. Remarkably, we found that DSB formation is widespread in the brain compared to cultured primary neurons and they are predominately involved in synaptic processes. We observed increased DNA breaks at genes induced by CFC in neuronal and non-neuronal nuclei. Activity-regulated and proteostasis-related transcription factors appear to govern some of these gene expression changes across cell types. Finally, we find that glia but not neurons have a robust transcriptional response to glucocorticoids, and many of these genes are sites of DSBs. Our results indicate that learning behaviors cause widespread DSB formation in the brain that are associated with experience-driven transcriptional changes across both neuronal and glial cells.

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  1. [68]Iannelli F, Galbiati A, Capozzo I, Nguyen Q, Magnuson B, Michelini F, et al. A damaged genome’s transcriptional landscape through multilayered expression profiling around in situ-mapped DNA double-strand breaks. Nat Commun. 2017; 8. doi: 10.1038/ncomms15656 28561034 PMC5499205 · DOI

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Authors
Stott, R. T., Kritsky, O., & Tsai, L.-H.
Affiliations
Massachusetts Institute of Technology (US)
Corresponding author
Tsai, Li-Huei
Venue
PLOS ONE
Published
2021-07-01
Volume
16
Issue
7
Pages
e0249691
ISSN
1932-6203 (ISSN-L)
OpenAlex
W3137582618
Cited by
62
References
144
Citations by year
2026: 9 · 2025: 7 · 2024: 20 · 2023: 10 · 2022: 13 · 2021: 2 · 2020: 1
FWCI
5.92
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc)
Funders
  • National Institutes of Health (R01NS102730-01)
  • Glenn Foundation for Medical Research
  • JPB Foundation
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
Keywords
DNA double-strand breaks, contextual fear conditioning, neuronal activity, early response genes, γH2AX, medial prefrontal cortex, hippocampus, synaptic activity, glucocorticoids, glial cells, proteostasis, transcriptional regulation
MeSH terms
Proteostasis, Chromatin Immunoprecipitation Sequencing, Animals, Fear, Hippocampus, Histones, Male, Mice, Inbred C57BL, Neurons, Prefrontal Cortex, 3' Untranslated Regions, Mice, DNA Breaks, Double-Stranded

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