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Epigenomic profiling of H3K27ac in mouse brain regions under morphine and LPS exposure

GSE332794 Mus musculus Genome binding/occupancy profiling by high throughput sequencing 206 samples Submitted 2026/06/17 Platform GPL34290
Summary
We profiled genome-wide H3K27ac chromatin modifications across four brain regions (hippocampus, prefrontal cortex, striatum, and hypothalamus) in male and female C57BL/6NTac mice using a perinatal morphine exposure model of Neonatal Opioid Withdrawal Syndrome (NOWS). Mice received morphine or saline perinatally, then were challenged with LPS or saline in adulthood, yielding four groups (SAL-SAL, SAL-LPS, MOR-SAL, MOR-LPS). NeuN+ neuronal nuclei (~10,000 per replicate) were isolated by FACS and profiled by MOWChIP-seq (Illumina NovaSeq X Plus, paired-end 150 nt). H3K27ac ChIP-seq identified differentially acetylated enhancers and promoters enriched in immune and metabolic pathways, with the hypothalamus exhibiting the most pronounced chromatin remodeling.
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Direct links to NCBI, no account and no request form: the whole study as GSE332794_RAW.tar, processed values as the series matrix, the supplementary file directory, and per-sample supplementary files for any of the 206 samples. Raw sequencing reads are also available from ENA.

Also filed as BioProject PRJNA1469104 and SRA study SRP702673. Searching any of these in the dataset finder brings you back here.

Study design
31 conditions, each sampled once — no replicated groups
H3K27ac ChIP-seq hippocampus, SAL-LPS, female… ×3 H3K27ac ChIP-seq hippocampus, MOR-LPS, male, … ×2 H3K27ac ChIP-seq hippocampus, MOR-SAL, female… ×2 H3K27ac ChIP-seq hippocampus, MOR-SAL, male, … ×2 H3K27ac ChIP-seq hippocampus, SAL-LPS, female… ×2 H3K27ac ChIP-seq hippocampus, SAL-LPS, female… ×2 H3K27ac ChIP-seq hippocampus, SAL-LPS, male, … ×2 H3K27ac ChIP-seq hippocampus, SAL-LPS, male, … ×2

Read from the first 40 of 206 sample titles: 31 distinct titles with little repetition. Check it against the sample list below before relying on it.

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