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Inactivation of the SRF cofactors Mrtfa and Mrtfb in MEFs results in proliferation defects and reduced expression of cytoskeletal and cell cycle progression genes

GSE298922 Mus musculus (mouse) RNA-seq (gene expression) 24 samples Submitted 2025/06/05 Platform GPL21103
At a glance

RNA-seq (gene expression) · mouse · 24 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
24 samples
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
MRTF-dependent cytoskeletal dynamics drive efficient cell cycle progressionJournal of cell science · 2025
Summary (written by the submitters)
The MRTFs (Myocardin-related transcription factors) are cofactors of the SRF transcription factor, and together they control dozens of growth factor-responsive, cytoskeletal and muscle specific genes. We used a conditional knockout strategy to demonstrate that in fibroblasts, inactivation of both Mrtfa and Mrtfb, or Srf, induces a severe defect in proliferation.
Read the full summary ↓
This state exhibits features of both quiescence and senescence, with MRTF-null cells upregulating similar cell cycle regulators to serum-deprived wildtype cells, but is fully reversible by MRTF re-expression. We analysed gene expression in three MEF pools derived from Wildtype (Rosa26Tam-Cre) animals, and three MEF pools derived from Mrtfa-/-;Mrtfbfl/fl;Rosa26Tam-Cre mice. RNA was collected 0, 2, 4 or 12 days after 4-hydroxytamoxifen treatment, which inactivate Mrtfb in Mrtfa-/-;Mrtfbfl/fl;Rosa26Tam-Cre and generate MRTF-null cells. The data indicate that substantial numbers of genes exhibit altered expression in Mrtfa-/-;Mrtfb-/- cells, the difference being most pronouced 12 days following 4-OHT treatment. Genes downregulated at this point include many genes identified as serum-inducible MRTF-SRF target cells in NIH3T3 cells (Esnault et al, 2014, DOI: 10.1101/gad.239327.114) or as derepressed in MEFs following inactivation of all members of the TCF family of SRF cofactors (Gualdrini et al, 2016, DOI: 10.1016/j.molcel.2016.10.016). They are most enriched in GO categories related to actin cytoskeletal dynamics and cell signalling, and GSEA hallmarks connected with cell growth, division, and cell cycle.
Published in
MRTF-dependent cytoskeletal dynamics drive efficient cell cycle progression
Nielsen JC, Benito-Jardon M, Christo Petrela N et al. · Journal of cell science 2025 · PMID 41200793 · doi:10.1242/jcs.264444
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 GSE298922_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 PRJNA1271789 and SRA study SRP589786. Searching any of these in the dataset finder brings you back here.

Samples in this study

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