Cited by 15Neurological disorders and treatmentsTreatment of Major DepressionTranscranial Magnetic Stimulation Studies

Epitranscriptome of the ventral tegmental area in a deep brain-stimulated chronic unpredictable mild stress mouse model

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Song, Nan, Du, Jun, Gao, Yan, Yang, Shenglian·2020·Translational Neuroscience

Abstract

Deep brain stimulation (DBS) applied to the nucleus accumbens (NAc) alleviates the depressive symptoms of major depressive disorders. We investigated the mechanism of this effect by assessing gene expression and RNA methylation changes in the ventral tegmental area (VTA) following NAc-DBS in a chronic unpredictable mild stress (CUMS) mouse model of depression. Gene expression and N 6-methyladenosine (m 6 A) levels in the VTA were measured in mice subjected to CUMS and then DBS, and transcriptome-wide m 6 A changes were profiled using immunoprecipitated methylated RNAs with microarrays, prior to gene ontology analysis. The expression levels of genes linked to neurotransmitter receptors, transporters, transcription factors, neuronal activities, synaptic functions, and mitogen-activated protein kinase and dopamine signaling were upregulated in the VTA upon NAc-DBS. Furthermore, m 6 A modifications included both hypermethylation and hypomethylation, and changes were positively correlated with the upregulation of some genes. Moreover, the effects of CUMS on gene expression and m 6 A-mRNA modification were reversed by DBS for some genes. Interestingly, while the expression of certain genes was not changed by DBS, long-term stimulation did alter their m 6 A modifications. NAc-DBS-induced modifications are correlated largely with upregulation but sometimes downregulation of genes in CUMS mice. Our findings improve the current understanding of the molecular mechanisms underlying DBS effects on depression.

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Authors
Song, N., Du, J., Gao, Y., & Yang, S.
Affiliations
Academy of Military Medical Sciences (CN)
Corresponding author
Song, Nan
Venue
Translational Neuroscience
Published
2020-01-01
Volume
11
Issue
1
Pages
402-418
ISSN
  • 2081-3856 (ISSN-L)
  • 2081-6936
OpenAlex
W3098358315
Cited by
15
References
70
Citations by year
2026: 2 · 2025: 3 · 2024: 4 · 2023: 1 · 2022: 2 · 2021: 3
FWCI
0.65
Type
journal article
Language
en
Open access
Locations
  • Translational Neuroscience (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
China Postdoctoral Science Foundation
Topics
  • Health Sciences › Medicine › Neurology › Neurological disorders and treatments
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Neurology › Transcranial Magnetic Stimulation Studies
Keywords
deep brain stimulation, nucleus accumbens, ventral tegmental area, chronic unpredictable mild stress, depression, N6-methyladenosine, RNA methylation, epitranscriptome, gene expression, dopamine signaling, mitogen-activated protein kinase, neurotransmitter receptors, synaptic function

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