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Polycomb Repressive-Deubiquitinase Complex Safeguards Oocyte Epigenome and Female Fertility by Restraining Polycomb Activity [RNA-Seq]

GSE302804 Mus musculus (mouse) RNA-seq (gene expression) 37 samples Submitted 2025/08/13 Platform GPL34290
At a glance

RNA-seq (gene expression) · mouse · 37 samples

What it is
RNA-seq (gene expression)Gene activity measured by sequencing. The summary does not mention single-cell work, so this is most likely bulk: one average per sample, the usual starting point for comparing groups.
Organism
Mus musculus (mouse)
Samples
37 samples: 15 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.
Paper
Polycomb Repressive-Deubiquitinase Complex Safeguards Oocyte Epigenome and Female Fertility by Restraining Polycomb ActivitybioRxiv : the preprint server for biology · 2025
Summary (written by the submitters)
Polycomb group proteins are essential for oogenesis, yet mechanisms underlying the non-canonical Polycomb landscapes in oocytes remain unclear. Here we report BAP1, a core component of the Polycomb Repressive-Deubiquitinase (PR-DUB) complex, as a key negative regulator of Polycomb activity during oogenesis. BAP1 restricts pervasive H2AK119ub1 accumulation in oocytes and protects oocyte-specific broad H3K27ac, particularly within gene-poor regions, from ectopic H3K27me3 deposition.
Read the full summary ↓
While PR-DUB has been linked to gene repression, in oocytes BAP1 primarily promotes transcription and contributes minimally to Polycomb-mediated silencing. BAP1-deficient oocytes cannot support preimplantation development due to impaired maternal-to-zygotic transition and defective embryonic enhancer activation. Notably, aberrant H3K27me3 landscape established in BAP1-null oocytes persists into early embryos. Together, these findings reveal a critical role for PR-DUB in safeguarding the oocyte epigenome by protecting euchromatin from ectopic Polycomb activity, rather than enforcing transcriptional repression.
Published in
Polycomb Repressive-Deubiquitinase Complex Safeguards Oocyte Epigenome and Female Fertility by Restraining Polycomb Activity
Kang J, Liu P, Ichimura S et al. · bioRxiv : the preprint server for biology 2025 · PMID 40766345 · doi:10.1101/2025.07.24.666633
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 GSE302804_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: For RNA-seq the counts are usually a table among the supplementary files (look for 'counts', 'expression', 'FPKM' or 'TPM' in the file name). The series matrix of a sequencing study is sometimes nearly empty.

Also filed as BioProject PRJNA1292190 and SRA study SRP601242. Searching any of these in the dataset finder brings you back here.

Study design
15 conditions, mostly in duplicate
late 1-cell, matKO, ×3 late 2-cell, matKO, ×3 FGO, CKO, ×3 MII, CKO, ×3 early 2-cell, matKO, ×3 early 2-cell, CTR, ×3 late 1-cell, CTR, ×2 late 2-cell, CTR, ×2 +8 more

Supports a between-group comparison across 36 samples.

How we read this: 15 replicated groups read from 37 sample titles; they account for 36 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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