Cited by 342Epigenetics and DNA MethylationStress Responses and CortisolNeuroscience and Neuropharmacology Research

Epigenetic basis of mental illness

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Nestler, Eric J., Peña, Catherine J., Kundakovic, Marija, Mitchell, Amanda, Akbarian, Schahram·2016·The Neuroscientist

Abstract

Psychiatric disorders are complex multifactorial illnesses involving chronic alterations in neural circuit structure and function as well as likely abnormalities in glial cells. While genetic factors are important in the etiology of most mental disorders, the relatively high rates of discordance among identical twins, particularly for depression and other stress-related syndromes, clearly indicate the importance of additional mechanisms. Environmental factors such as stress are known to play a role in the onset of these illnesses. Exposure to such environmental insults induces stable changes in gene expression, neural circuit function, and ultimately behavior, and these maladaptations appear distinct between developmental versus adult exposures. Increasing evidence indicates that these sustained abnormalities are maintained by epigenetic modifications in specific brain regions. Indeed, transcriptional dysregulation and the aberrant epigenetic regulation that underlies this dysregulation is a unifying theme in psychiatric disorders. Here, we provide a progress report of epigenetic studies of the three major psychiatric syndromes, depression, schizophrenia, and bipolar disorder. We review the literature derived from animal models of these disorders as well as from studies of postmortem brain tissue from human patients. While epigenetic studies of mental illness remain at early stages, understanding how environmental factors recruit the epigenetic machinery within specific brain regions to cause lasting changes in disease susceptibility and pathophysiology is revealing new insight into the etiology and treatment of these conditions.

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Authors
Nestler, E. J., Peña, C. J., Kundakovic, M., Mitchell, A., & Akbarian, S.
Affiliations
  • Icahn School of Medicine at Mount Sinai (US)
  • Departments of Neuroscience and Psychiatry, The Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
Corresponding author
Nestler, Eric J.
Venue
The Neuroscientist
Published
2016-07-09
Volume
22
Issue
5
Pages
447-463
ISSN
  • 1073-8584 (ISSN-L)
  • 1089-4098
OpenAlex
W2340426429
Cited by
342
References
124
Citations by year
2026: 28 · 2025: 33 · 2024: 28 · 2023: 25 · 2022: 29 · 2021: 38 · 2020: 35 · 2019: 39 · 2018: 31 · 2017: 26 · 2016: 29 · 2014: 1
FWCI
12.45
Type
journal article
Language
en
Open access
Locations
  • The Neuroscientist (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of Mental Health (P50MH096890)
  • National Institute on Drug Abuse (P01DA008227, R01DA007359)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
epigenetics, mental illness, depression, schizophrenia, bipolar disorder, environmental stress, gene expression regulation, transcriptional dysregulation, brain regions, animal models of psychiatric disorders, postmortem brain, glial cells, neural circuit function, disease susceptibility
MeSH terms
Animals, Brain, Humans, Schizophrenia, Gene Expression, DNA Methylation, MicroRNAs, Epigenesis, Genetic

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