Cited by 135Genetics and Neurodevelopmental DisordersNeuroscience and Neuropharmacology ResearchEpigenetics and DNA Methylation

MeCP2-Mediated Transcription Repression in the Basolateral Amygdala May Underlie Heightened Anxiety in a Mouse Model of Rett Syndrome

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Adachi, Megumi, Autry, Anita E., Covington, Herb E., Monteggia, Lisa M.·2009·The Journal of Neuroscience

Abstract

Rett syndrome (RTT) is an X-linked neurodevelopmental disorder that results from loss of function mutations in the methyl-CpG binding protein 2 (MECP2) gene. Using viral-mediated basolateral amygdala (BLA)-specific deletion of Mecp2 in mice, we show that intact Mecp2 function is required for normal anxiety behavior as well as some types of learning and memory. To examine whether these behavioral deficits are the result of impaired transcriptional repression, because Mecp2 is believed to act as a transcriptional repressor in complex with histone deacetylases (HDACs), we infused a HDAC inhibitor chronically into the BLA of wild-type mice. We found that HDAC inhibition produces behavioral deficits similar to those observed after the deletion of Mecp2 in the BLA. These results suggest a key role for Mecp2 as a transcriptional repressor in the BLA in mediating behavioral features of RTT.

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Crossref · 10.1523/jneurosci.4225-08.2009

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  • MeCP2 may be required to recruit HDACs to maintain lower levels of acetylation necessary for gene repression.

    “This was accompanied by an increase in H3 acetylation, indicating that MeCP2 may be required to recruit HDACs to maintain lower levels of acetylation necessary for gene repression (Adachi et al., 2009).”

    From The Epigenetics of Anxiety Pathophysiology: A DNA Methylation and Histone Modification Focused Review (2023) · cites this paper as Adachi et al., 2009

    The Results (page not provided) report that MeCP2 loss in the basolateral amygdala increased H3 acetylation, and that HDAC inhibition increased histone acetylation. The Discussion (page not provided) interprets the findings as consistent with impaired transcriptional repression. These passages support the proposed link, but do not establish the specific step of MeCP2 recruiting HDACs. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • Viral deletion of MeCP2 in the BLA of mice was accompanied by an increase in H3 acetylation.

    “This was accompanied by an increase in H3 acetylation, indicating that MeCP2 may be required to recruit HDACs to maintain lower levels of acetylation necessary for gene repression (Adachi et al., 2009).”
  • Viral deletion of MeCP2 in the BLA of mice resulted in an increase in anxiety-like behaviors.

    “In a study published a few years later, viral deletion of MeCP2 in the BLA of mice resulted in an increase in anxiety-like behaviors.”

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Authors
Adachi, M., Autry, A. E., Covington, H. E., & Monteggia, L. M.
Affiliations
  • The University of Texas at Dallas (US)
  • The University of Texas Southwestern Medical Center (US)
Venue
The Journal of Neuroscience
Published
2009-04-01
Volume
29
Issue
13
Pages
4218-4227
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1993341628
Cited by
135
References
51
Citations by year
2026: 6 · 2025: 1 · 2023: 5 · 2022: 9 · 2021: 5 · 2020: 8 · 2019: 3 · 2018: 3 · 2017: 4 · 2016: 9 · 2015: 8 · 2014: 16 · 2013: 10 · 2012: 22
FWCI
9.36
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • International Rett Syndrome Foundation
  • National Institute of Mental Health (R01MH081060, R21MH077944, MH077944)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
Keywords
Rett syndrome, MeCP2, basolateral amygdala, anxiety, transcriptional repression, histone deacetylase, histone deacetylase inhibition, learning and memory, viral gene deletion, mouse model
MeSH terms
Vorinostat, Amygdala, Animals, Anxiety, Conditioning, Psychological, Disease Models, Animal, Enzyme Inhibitors, Fear, Histone Deacetylases, Hydroxamic Acids, Interpersonal Relations, Male, Mice, Inbred C57BL, Mice, Transgenic, Motor Activity, Mutation, Neurons, Time Factors, Transcription, Genetic, Rett Syndrome, Pain Threshold, Maze Learning, Recombinases, Green Fluorescent Proteins, Mice, Methyl-CpG-Binding Protein 2

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