← BioTransfer GEO Dataset Finder
GEO series

Uncovering Critical Lysines in Mammalian Histone H3 with High-Throughput CRISPR Prime Editing [CUT&Tag]

GSE319420 Mus musculus (mouse) ChIP-seq / ATAC-seq (genome binding and open chromatin) 26 samples Submitted 2026/05/09 Platform GPL30172
At a glance

ChIP-seq / ATAC-seq (genome binding and open chromatin) · mouse · 26 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
26 samples: 10 conditions, mostly in triplicateGroups 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)
Histone proteins are central to regulating eukaryotic genomes, and their post-translational modifications play key roles in controlling gene expression, DNA repair and chromatin structure. Understanding the functions of individual histone modifications is a significant challenge in mammalian chromatin biology, primarily due to the multiple copies of histone genes found in mammalian genomes.
Read the full summary ↓
In this study, we present a high-throughput CRISPR prime editing platform that allows for base-precise, combinatorial, and reversible mutagenesis of all canonical and non-canonical histone H3 genes within their native genomic context. Using this system, we systematically substituted each lysine residue in histone H3 with arginine and compared each mutation against synonymous lysine-to-lysine controls. This unbiased functional screen revealed a core set of lysines, including H3K4, H3K9, H3K14, H3K18, and H3K79, whose mutations impair cellular fitness in mouse embryonic stem cells, highlighting the critical roles of their post-translational modifications in chromatin function. In addition, our approach demonstrated that H3K56 acetylation, previously linked to genome stability in yeast and Drosophila, plays a conserved role in safeguarding the genome in mammalian cells. Extending this approach, we generated double histone H3 mutants to probe functional redundancy between several lysine residues. While individual substitutions caused minimal defects, specific combinations, most notably H3K27R+H3K36R, revealed impairments in stem cell self-renewal and distinct transcriptional consequences, uncovering regulatory crosstalk not evident from single-site perturbations. This study presents the first comprehensive functional map of histone H3 lysines in a mammalian system, establishing a broadly applicable platform for dissecting histone modifications with advanced precision.
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 GSE319420_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 PRJNA1423263 and SRA study SRP676849. Searching any of these in the dataset finder brings you back here.

Study design
10 conditions, mostly in triplicate
CnT_H3K18ac_H312K18K ×3 CnT_H3K18ac_H312K18 ×3 CnT_H3K18ac_H3123K18 ×3 CnT_H33_H312K18K ×3 CnT_H33_H312K18 ×3 CnT_H33_H3123K18 ×3 CnT_H3K36me3_K36K ×2 CnT_H3K36me3_K36 ×2 +2 more

Supports a between-group comparison across 26 samples.

How we read this: 10 replicated groups read from 26 sample titles; they account for 26 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

Search all mouse ChIP / ATAC / CUT&Tag datasets in GEO →

Share this dataset

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.