Cited by 289Neurotransmitter Receptor Influence on BehaviorEpigenetics and DNA MethylationStress Responses and Cortisol

A Role for Repressive Histone Methylation in Cocaine-Induced Vulnerability to Stress

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Covington, Herbert E., Maze, Ian, Sun, HaoSheng, Bomze, Howard M., DeMaio, Kristine D., Wu, Emma Y., Dietz, David M., Lobo, Mary Kay +5 more·2011·Neuron

Abstract

Substance abuse increases an individual's vulnerability to stress-related illnesses, which is presumably mediated by drug-induced neural adaptations that alter subsequent responses to stress. Here, we identify repressive histone methylation in nucleus accumbens (NAc), an important brain reward region, as a key mechanism linking cocaine exposure to increased stress vulnerability. Repeated cocaine administration prior to subchronic social defeat stress potentiated depressive-like behaviors in mice through decreased levels of histone H3 lysine 9 dimethylation in NAc. Cre-mediated reduction of the histone methyltransferase, G9a, in NAc promoted increased susceptibility to social stress, similar to that observed with repeated cocaine. Conversely, G9a overexpression in NAc after repeated cocaine protected mice from the consequences of subsequent stress. This resilience was mediated, in part, through repression of BDNF-TrkB-CREB signaling, which was induced after repeated cocaine or stress. Identifying such common regulatory mechanisms may aid in the development of new therapies for addiction and depression.

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Crossref · 10.1016/j.neuron.2011.06.007

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  • The HDAC2-inhibitor structures revealed an overall HDAC2 protein conformation similar to a previously solved HDAC2 structure, albeit at significantly higher resolution.

    “The structures revealed an overall HDAC2 protein conformation similar to a previously solved HDAC2 structure, albeit at significantly higher resolution (Table 1 and Fig. 2) (17-19, 31, 33).”

    From Histone Deacetylase (HDAC) Inhibitor Kinetic Rate Constants Correlate with Cellular Histone Acetylation but Not Transcription and Cell Viability (2013) · cites this paper as [19]

    The Discussion mentions HDAC inhibitors in relation to behavioral effects, while the Results address histone methylation after cocaine and stress; neither section reports an HDAC2 protein structure. Searches for HDAC2-inhibitor structures, protein conformation, and higher-resolution crystal structures found no passage addressing the claim. Page numbers were unavailable in our copy. (LLM, conf=0.77)

    Experimental — accuracy not yet measured
  • Repressive histone modifications are both up- and downregulated after social defeat stress, and these changes are linked to genes with known roles in CSDS-susceptibility.

    “Repressive histone modifications are both up-and downregulated after social defeat stress, and these changes are linked to genes with known roles in CSDS-susceptibility.”
  • G9a expression is decreased in the NAc of CSDS-susceptible mice.

    “The repressive histone lysine methyl-transferase G9a decreases TrkB-CREB signaling and G9a expression is decreased in the NAc of CSDS-susceptible mice [140].”
  • G9a decreases TrkB-CREB signaling.

    “The repressive histone lysine methyl-transferase G9a decreases TrkB-CREB signaling and G9a expression is decreased in the NAc of CSDS-susceptible mice [140].”
  • G9a overexpression promotes resilience, thought to occur by normalization of TrkB-CREB signaling.

    “G9a overexpression promotes resilience, thought to occur by normalization of TrkB-CREB signaling [140].”

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Research works printed but not linked: 1

  1. Fuchs E Flugge G Social stress in tree shrews: effects on physiology, brain function, and behavior of subordinate individuals Pharmacol Biochem Behav 2002 73 247 258 12076743

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Authors
Covington, H. E., Maze, I., Sun, H., Bomze, H. M., DeMaio, K. D., Wu, E. Y., Dietz, D. M., Lobo, M. K., Ghose, S., Mouzon, E., Neve, R. L., Tamminga, C. A., & Nestler, E. J.
Affiliations
  • Icahn School of Medicine at Mount Sinai (US)
  • Duke University (US)
  • The University of Texas Southwestern Medical Center (US)
  • Massachusetts Institute of Technology (US)
Corresponding author
Nestler, Eric J.
Venue
Neuron
Publisher
Elsevier BV
Published
2011-08
Volume
71
Issue
4
Pages
656-670
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2067821921
Cited by
289
References
70
Citations by year
2026: 7 · 2025: 10 · 2024: 15 · 2023: 9 · 2022: 16 · 2021: 16 · 2020: 18 · 2019: 20 · 2018: 23 · 2017: 25 · 2016: 26 · 2015: 23 · 2014: 32 · 2013: 26 · 2012: 18
FWCI
10.74
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc)
  • Elsevier eBooks
Funders
  • National Institute of Mental Health (R01MH051399, P50MH066172)
  • National Institute on Drug Abuse (P01DA008227, R01DA014133)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
Keywords
cocaine, social defeat stress, stress vulnerability, H3K9 dimethylation, G9a, nucleus accumbens, depression, addiction, epigenetic regulation
MeSH terms
Animals, Behavior, Animal, Cocaine, Depression, Histones, Humans, Male, Methylation, Mice, Inbred C57BL, Motor Activity, Nucleus Accumbens, Social Behavior, Stress, Psychological, Signal Transduction, Cyclic AMP Response Element-Binding Protein, Dopamine Uptake Inhibitors, Brain-Derived Neurotrophic Factor, Cocaine-Related Disorders, Receptor, trkB, Mice

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