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Inhibition of DEK contributes to the tolerance of replication stress and restores HSC function in Fanconi anemia [12-ATAC]

GSE281513 Homo sapiens (human) ChIP-seq / ATAC-seq (genome binding and open chromatin) 10 samples Submitted 2025/01/03 Platform GPL24676
At a glance

ChIP-seq / ATAC-seq (genome binding and open chromatin) · human · 10 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
Homo sapiens (human)
Samples
10 samples: 5 × ATAC_FA vs 5 × ATAC_HealthyGroups 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)
Replication stress drives functional decline in HSCs and is a major driver of BM failure in Fanconi anemia (FA). At present, how HSCs respond and counteract replication stress remains largely unknown. Using integrated multi-omics, we demonstrate that global chromatin relaxation is a prerequisite for the activation of stress-responsive genes and replication fork stabilization/progression in HSCs under replication stress.
Read the full summary ↓
The reduced DEK (a chromatin architectural protein) contributes to the chromatin relaxation in HSCs, whereas DEK-overexpressed HSCs are confronted with a strong replication challenge, resulting in impaired HSC maintenance and hematopoiesis. Fancd2 deletion induces DEK expression and causes replication stress in HSCs, while haploinsufficiency of DEK promotes chromatin opening in Fancd2-deficient HSCs and substantially recovers HSC function. Notably, DEK expression is abnormally up-regulated in bone marrow (BM) CD34+ cells from FA patients. Inhibition of DEK significantly restores the proliferation capacity in vitro and engraftment in vivo of BM CD34+ cells from FA patients. At the molecular level, we identify that the transcriptional factor ATF2 directly promotes DEK transcription, mainly relying on the phosphorylated ATF2 (Thr69/71). Wild-type HSCs reduces DEK expression to counteract replication stress through the ATR kinase to phosphorylate ATF2 at Ser490/498. However, Fancd2 deficiency induces hyper-phosphorylation of p38 that further phosphorylates ATF2 at Thr69/71, causing DEK accumulation in HSCs. Collectively, our findings provide the first evidence of a functional link between chromatin relaxation and replication stress tolerance in HSCs, and highlight DEK as a potential molecular target for FA.
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 GSE281513_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 PRJNA1184169 and SRA study SRP544244. Searching any of these in the dataset finder brings you back here.

Study design
5 × ATAC_FA vs 5 × ATAC_Healthy

Supports a between-group comparison across 10 samples.

How we read this: 2 replicated groups read from 10 sample titles; they account for 10 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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