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RNAseq of activated CD8+ T cells with and without Glutamine Synthetase

GSE290455 Mus musculus (mouse) RNA-seq (gene expression) 10 samples Submitted 2026/02/04 Platform GPL34290
At a glance

RNA-seq (gene expression) · mouse · 10 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
10 samples: 5 × WT CD8+ T cells, vs 5 × GS KO CD8+ T cells,Groups 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
Glutamine synthetase deficiency enhances CD8 T cell survival and stress resilience in the tumor microenvironmentJournal of immunology (Baltimore, Md. : 1950) · 2026
Summary (written by the submitters)
Cellular immunotherapy has revolutionized the treatment of hematologic malignancies yet has limited success in the solid tumor microenvironment (TME). While insufficient nutrients can lead to T cell metabolic stress in the TME, the glutamine antagonist 6-Diazo-5-oxo-L-norleucine (DON) can paradoxically enhance anti-tumor immunity. Because DON inhibits a range of glutamine metabolizing enzymes, including some that are essential and may contribute to dose-limiting toxicities, mechanisms underlying DON-induced anti-tumor activity have remained unclear.
Read the full summary ↓
Here we aimed to identify specific DON targets responsible for increased T cell anti-tumor activity and test if more selective inhibition of glutamine metabolism could replicate the effects of DON with reduced toxicity. CRISPR screening in the TME of DON-relevant glutamine metabolizing enzymes identified some targets that were essential in tumor infiltrating CD8 T cells (TILs), but that TILs lacking the DON target glutamine synthetase (GS) were enriched. Upon adoptive T cell transfers, GS-deficient CD8+ T cells displayed improved survival, a more stem-like phenotype, and greater anti-tumor function. GS converts glutamate to glutamine and GS-deficient cells exhibited increased intracellular glutamate and reduced glutathione levels, which correlated with enhanced mitochondrial respiration and resistance to reactive oxygen species (ROS). Pharmacological inhibition of GS reduced tumor burden in multiple orthotopic murine tumor models in a manner dependent on adaptive immunity. Our findings establish GS as a key metabolic regulator of CD8+ T cells in the TME. By preserving intracellular glutamate, GS inhibition reprograms T cells for improved survival and function, offering a promising therapeutic strategy to enhance immune-based cancer treatments.
Published in
Glutamine synthetase deficiency enhances CD8 T cell survival and stress resilience in the tumor microenvironment
Fisher-Gupta EL, Hathaway ES, Perera JM et al. · Journal of immunology (Baltimore, Md. : 1950) 2026 · PMID 41171699 · doi:10.1093/jimmun/vkaf250
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 GSE290455_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 PRJNA1228069 and SRA study SRP566242. Searching any of these in the dataset finder brings you back here.

Study design
5 × WT CD8+ T cells, vs 5 × GS KO CD8+ T cells,

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
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