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Dynamic Control of RNA-DNA Hybrid Formation Orchestrates DNA2 Activation at Stalled Forks by RNAPII and DDX39A [RNA-seq]

GSE252171 Homo sapiens (human) RNA-seq (gene expression) 36 samples Submitted 2024/12/19 Platform GPL24676
At a glance

RNA-seq (gene expression) · human · 36 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
Homo sapiens (human)
Samples
36 samples: 18 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
Dynamic control of RNA-DNA hybrid formation orchestrates DNA2 activation at stalled forks by RNAPII and DDX39AMolecular cell · 2025
Summary (written by the submitters)
The accurate processing of stalled forks by the DNA2 nuclease is pivotal for replication fork restart, as excessive degradation poses a threat to genomic stability. However, the regulation of DNA2 activity at stalled forks remains elusive. Here, we demonstrate that, upon replication stress, RNA polymerase II (RNAPII) is recruited to stalled forks, actively promoting the transient formation of RNA-DNA hybrids.
Read the full summary ↓
Furthermore, we provide evidence that DDX39A, functioning as an RNA-DNA resolver, unwinds these hybrids, allowing DNA2 access to stalled forks. This orchestrated process facilitates controlled DNA2-dependent stalled fork processing and restart. Nevertheless, premature removal of RNA-DNA hybrids at stalled forks leads to DNA2-dependent excessive degradation of nascent DNA. Finally, we reveal that loss of DDX39A enhances the protection of stalled forks in BRCA1/2-deficient cells, consequently conferring chemoresistance within this specific cellular context. Our results suggest that the dynamic regulation of RNA-DNA hybrid formation at stalled forks by RNAPII and DDX39A precisely governs the timing of DNA2 activation, contributing to stalled fork processing and restart, ultimately promoting genome stability.
Published in
Dynamic control of RNA-DNA hybrid formation orchestrates DNA2 activation at stalled forks by RNAPII and DDX39A
Song L, Xie H, Fan H et al. · Molecular cell 2025 · PMID 39706186 · doi:10.1016/j.molcel.2024.11.034
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 GSE252171_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 PRJNA1058405 and SRA study SRP480457. Searching any of these in the dataset finder brings you back here.

Study design
18 conditions, mostly in duplicate
rna_ctrl ×2 rna_ctrl_hu ×2 rna_ko_hu ×2 batch2_rna_ko_hu ×2 rna_ko_hu_DRB ×2 rna_ko_hu_RH ×2 rna_siCtrl_hu ×2 rna_siRAD51_hu ×2 +10 more

Supports a between-group comparison across 36 samples.

How we read this: 18 replicated groups read from 36 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
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