GEO series

mTORC1-Driven DDA1 Phosphorylation Promotes DNA Repair and Glioblastoma Progression

GSE303079 Homo sapiens (human) RNA-seq (gene expression) 18 samples Submitted 2025/07/29 Platform GPL23227

At a glance

RNA-seq (gene expression) · human · 18 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)
Topic: GlioblastomaThis series is part of our curated briefing on it.
Samples: 18 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.

Summary (written by the submitters)

DDA1 is a protein involved in protein degradation, cell cycle regulation, and DNA damage repair. Interestingly, recent studies have revealed its differential expression across various tumor types. However, how DDA1 functions as a tumorogenic factor remains to be elucidated. Through studies in multiple glioblastoma cell models, we identified a physical association between cytoplasmic DDA1 and Raptor, a key component of lysosome-associated mTORC1.

Read the full summary ↓

We report that amino acid stimulation triggers phosphorylation of DDA1 at serine 33, promoting its nuclear translocation and involvement in DNA damage repair. Integrated genomic and transcriptomic analyses revealed that the mTORC1-DDA1S33-DNA repair axis regulates the expression of a subset of metabolic genes, including ENO2, a glycolytic enzyme; CA12, which contributes to intracellular and extracellular pH homeostasis; and NMRK1, a key enzyme in nicotinamide riboside metabolism. Notably, DDA1 deficiency markedly impaired glioblastoma growth and triggered a compensatory upregulation of metabolic activity to sustain tumor cell survival. These metabolic genes likely supply essential nutrients required for effective DNA repair. Our findings establish DDA1 as a previously unrecognized phosphorylation target downstream of mTORC1, serving as a critical mediator of mTORC1-driven DNA damage response and a key regulator of glioblastoma progression, thereby expanding our understanding of gliomagenesis.

This dataset

Open GSE303079 in finder → Find more human RNA-seq datasets → Glioblastoma landscape →

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.

Series matrix ↓

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 GSE303079_RAW.tar (it can run to tens of gigabytes).

All supplementary files ↗ Whole study · RAW.tar ↓

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.

Raw reads on ENA ↗

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 PRJNA1293952 and SRA study SRP602323. Searching any of these in the dataset finder brings you back here.

NCBI GEO page ↗

Samples in this study

The sample list for this study is not cached yet. Press Load samples and it will be fetched from NCBI.

+ 18 more — browse all 18 samples with per-sample file links →

More Glioblastoma datasets

GSE115459 Exosome-transmitted RVT1 from reactive astrocytes promotes recurrence glioblastoma proliferation 9 samples same disease briefing · shares glioblastoma, promotes
GSE112648 SOXC factors as suppressors modulate Rho activity to promote neuronal reprogramming of human glioblastoma cells 18 samples same disease briefing · shares glioblastoma
GSE131928 single cell RNA-seq analysis of adult and paediatric IDH-wildtype Glioblastomas 2 samples same disease briefing · shares glioblastoma
GSE107560 Ivy Glioblastoma Atlas Project 305 samples same disease briefing · shares glioblastoma
GSE13041 Gene expression analysis of glioblastomas identifies the major molecular basis for the prognostic benefit of younger age 267 samples same disease briefing · shares glioblastoma
GSE10878 Integrative Genome-wide Analysis of Glioblastoma. 60 samples same disease briefing · shares glioblastoma
GSE112650 SOX4/11 Enhances NGN2 Reprogramming Glioblastoma Cells into Neuron Cells by Modulating RhoA and CDC42/RAC1 Pathway Activity 30 samples same disease briefing · shares glioblastoma
GSE112645 SOXC factors as suppressors modulate Rho activity to promote neuronal reprogramming of human glioblastoma cells 12 samples same disease briefing · shares glioblastoma

Search all human RNA-seq 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.