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Brg1 defect causes aberrent nucleosome landscape and affects totipotency & pluripotency transcriptional factors binding during embryogenesis [MNase-Seq]

GSE297843 Mus musculus (mouse) ChIP-seq / ATAC-seq (genome binding and open chromatin) 16 samples Submitted 2025/05/23 Platform GPL21273
At a glance

ChIP-seq / ATAC-seq (genome binding and open chromatin) · mouse · 16 samples

What it is
ChIP-seq / ATAC-seq (genome binding and open chromatin)Where proteins bind the genome, or which regions are open and active.
Organism
Mus musculus (mouse)
Samples
16 samples: 8 conditions, mostly in duplicateGroups are read from the sample names, not from the paper. Check the list below.
Data you can get
A processed table (series matrix) and supplementary files from NCBI; the raw sequencing reads from ENA. Which of these hold counts depends on the study, so check the file list.
Summary (written by the submitters)
Mammalian embryogenesis involves intricate epigenetic reprogramming and chromatin remodeling. In this study, we investigated the role of Brg1, a catalytic ATPase subunit of the SWI/SNF complex, in early embryonic development and mouse embryonic stem cell (mESC) pluripotency. By generating Smarca4 flox/flox Gdf9-Cre female mice to knockout Brg1 in MII oocytes and using CRISPR-Cas9 to knockout Brg1 in mESCs, we found that Brg1 deficiency led to multiple defects.
Read the full summary ↓
In mouse embryos, maternal knockout of Brg1 caused reduced blastocyst formation, delayed development, elevated nucleosome occupancy at gene promoters, and dysregulation of zygotic genome activation (ZGA) genes, potentially due to disrupted binding of totipotency-related transcription factors (TFs). In mESCs, Brg1 knockout resulted in abnormal clone morphology, decreased pluripotency marker expression, and reduced cell proliferation. Brg1 affected pluripotency mainly by influencing the binding of pluripotency-related TFs such as Oct4 through enhancer accessibility. We identified those TFs as totipotency/pluripotency Brg1-dependent TFs. Overall, this study demonstrates the crucial role of Brg1 in ZGA and mESC identity maintenance in affecting specific TF binding on proximal and distal regulatory elements.
This dataset
Download · which file do I need?

Direct links to NCBI and ENA, no account and no request form. Pick by what you want to do: take the small processed table to look, the supplementary files to re-analyse, or the original raw data to start over.

1 · Just have a look

Processed table

The series matrix: one table of values per sample as the submitters processed it. The smallest download, and it opens in Excel or R. Start here to see what the data look like.

2 · Re-analyse it

Supplementary files

The count tables and other files the authors uploaded. Take only the samples you need, or the whole study as GSE297843_RAW.tar (it can run to tens of gigabytes).

3 · Start from the raw reads

Raw sequencing reads

The original FASTQ files, straight from the sequencer, held at ENA. Large, and you align them yourself, so only choose this if you need to re-process the study from scratch.

What the files usually look like: Look for peak files (.bed, .narrowPeak) and signal tracks (.bigWig) among the supplementary files; the raw reads are on ENA.

Also filed as BioProject PRJNA1266270 and SRA study SRP586928. Searching any of these in the dataset finder brings you back here.

Study design
8 conditions, mostly in duplicate
WT_MII_ULI-MNase-seq ×2 KO_MII_ULI-MNase-seq ×2 WT_PN3_ULI-MNase-seq ×2 KO_PN3_ULI-MNase-seq ×2 WT_E2C_ULI-MNase-seq ×2 KO_E2C_ULI-MNase-seq ×2 WT_L2C_ULI-MNase-seq ×2 KO_L2C_ULI-MNase-seq ×2

Supports a between-group comparison across 16 samples.

How we read this: 8 replicated groups read from 16 sample titles; they account for 16 of them. These groups are guessed from the sample names, not taken from the paper, so check them against the sample list below before relying on them.

Samples in this study
Datasets on a similar topic

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Metadata from NCBI GEO, cached and refreshed periodically — the NCBI page above is authoritative. Downloads link straight to NCBI/ENA; nothing is proxied through BioTransfer.