ArticleJournal of Alzheimer's disease : JAD2026
Epigenomic aberrations of histone methylation in prefrontal cortex of humans with mild cognitive impairment and Alzheimer's disease.
Article in Journal of Alzheimer's disease : JAD, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Epigenetic Regulation of Modulatory Neurotransmitter System Integrity in the Aging Brain: A Scoping Review Across the Lifespan.Life (Basel, Switzerland) · 2026Review
- SETD1A Regulates Glycolysis and Senescence of Nucleus Pulposus Cells via H3K4me3-HELZ2/PPARα-HIF1α Axis to Drive Intervertebral Disc Degeneration.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Inhibition of histone lysine demethylase restores learning and memory in aged mice.bioRxiv : the preprint server for biology · 2025Article
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Abstract
BackgroundEpigenetic mechanisms, particularly histone modifications at gene promoters, are crucial for controlling gene transcription.ObjectiveWe aim to find out epigenomic aberrations during the progression of neurodegenerative disorders.MethodsWe employed a multifaceted approach to investigate how the two key histone methylation marks, H3K4me3 (linked to gene activation) and H3K27me3 (linked to gene suppression), are altered in postmortem prefrontal cortex of humans with mild cognitive impairment (MCI) or Alzheimer's disease (AD).ResultsCompared to controls, MCI and AD exhibited pronounced losses of permissive H3K4me3 peaks at promoters of genes enriched in synaptic plasticity and neurotransmission, and significant gains of H3K4me3 peaks at promoters of genes enriched in transcriptional regulation. AD displayed more substantial H3K4me3 losses on synaptic genes than MCI. Conversely, significant gains of repressive H3K27me3 peaks were observed at synaptic gene promoters in both disease groups, with MCI exhibiting more pronounced H3K27me3 gains on synaptic genes than AD. Weighted Gene Correlation Network Analysis (WGCNA) revealed multiple modules characterizing distinct patterns of gains and losses of H3K4me3 and H3K27me3 during the transition from MCI to AD. Integrative analysis of epigenomic and transcriptomic data indicated that these histone mark alterations were well correlated with the downregulation of synaptic genes and upregulation of transcriptional regulators in AD.ConclusionsThis comprehensive profiling uncovers a stage-dependent reorganization of histone modifications at critical gene loci, implicating these events in the molecular cascade of AD pathogenesis. Targeting dysregulated chromatin states may offer novel therapeutic avenues for early intervention of AD.
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