Cited by 9Neuropeptides and Animal PhysiologyTreatment of Major DepressionNeurotransmitter Receptor Influence on Behavior

Kappa Opioid Receptor Activation Induces Epigenetic Silencing of Brain-Derived Neurotropic Factor via HDAC5 in Depression

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Yadav, Anubhav, Dogra, Shalini, Boda, Arun Kumar, Kumari, Poonam, Kumar, Ajeet, Dash, Manish K., Yadav, Prem N.·2024·ACS Chemical Neuroscience

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Abstract

Treatment-resistant depression (TRD) occurs in almost 50% of the depressed patients. Central kappa opioid receptor (KOR) agonism has been demonstrated to induce depression and anxiety, while KOR antagonism alleviates depression-like symptoms in rodent models and TRD in clinical studies. Previously, we have shown that sustained KOR activation leads to a TRD-like phenotype in mice, and modulation of brain-derived neurotrophic factor (BDNF) expression in the prefrontal cortex (PFC) appears to be one of the molecular determinants of the antidepressant response. In the present study, we observed that sustained KOR activation by a selective agonist, U50488, selectively reduced the levels of Bdnf transcripts II, IV, and Bdnf CDS (protein-coding Exon IX) in the PFC and cultured primary cortical neurons, which was blocked by selective KOR antagonist, norbinaltorphimine . Considering the crucial role of epigenetic pathways in BDNF expression, we further investigated the role of various epigenetic markers in KOR-induced BDNF downregulation in mice. We observed that treatment with U50488 resulted in selective and specific downregulation of acetylation at the ninth lysine residue of the histone H3 protein (H3K9ac) and upregulation of histone deacetylase 5 (HDAC5) expression in the PFC. Further, using anti-H3K9ac and anti-HDAC5 antibodies in the chromatin immune precipitation assay, we detected decreased enrichment of H3K9ac and increased HDAC5 binding at Bdnf II and IV transcripts after U50488 treatment, which were blocked by a selective KOR antagonist, norbinaltorphimine . Further mechanistic studies using HDAC5 selective inhibitor, LMK235, in primary cortical neurons and adeno-associated viral shRNA-mediated HDAC5-knockdown in the PFC of mice demonstrated an essential role of HDAC5 in KOR-mediated reduction of Bdnf expression in the PFC and in depression-like symptoms in mice. These results suggest that KOR engages multiple pathways to induce depression-like symptoms in mice and provide novel insights into the mechanisms by which activation of KOR regulates major depressive disorders.

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Crossref · 10.1021/acschemneuro.4c00175

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  • Changes in histone marks are linked to neuroinflammation and neuronal injury, contributing to structural and functional alterations observed in depression.

    “Changes in histone marks have been linked to neuroinflammation and neuronal injury, contributing to structural and functional alterations observed in depression (Yadav et al., 2024; Yuan et al., 2023; Zhu et al., 2021).”

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Authors
Yadav, A., Dogra, S., Boda, A. K., Kumari, P., Kumar, A., Dash, M. K., & Yadav, P. N.
Affiliations
Central Drug Research Institute (IN)
Corresponding author
Yadav, Prem N.
Venue
ACS Chemical Neuroscience
Published
2024-08-27
Volume
15
Issue
18
Pages
3286-3297
ISSN
1948-7193 (ISSN-L)
OpenAlex
W4401906783
Cited by
9
References
59
Citations by year
2026: 5 · 2025: 4
FWCI
1.58
Type
journal article
Language
en
Open access
Locations
  • ACS Chemical Neuroscience (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • PubMed (publishedVersion)
Funders
  • Council of Scientific and Industrial Research, India (MLP2032)
  • University Grants Commission
  • Science and Engineering Research Board (GAP0397)
  • Academy of Scientific and Innovative Research (Ghaziabad-201002)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
kappa opioid receptor, treatment-resistant depression, brain-derived neurotrophic factor, HDAC5, epigenetic silencing, H3K9 acetylation, prefrontal cortex, U50,488, nor-binaltorphimine, BDNF isoforms, cortical neurons, depression-like behavior
MeSH terms
Animals, Depression, Histone Deacetylases, Male, Mice, Inbred C57BL, Neurons, Prefrontal Cortex, Receptors, Opioid, kappa, Brain-Derived Neurotrophic Factor, 3,4-Dichloro-N-methyl-N-(2-(1-pyrrolidinyl)-cyclohexyl)-benzeneacetamide, (trans)-Isomer, Epigenesis, Genetic, Mice

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