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TROP2/claudin program mediates immune exclusion to impede checkpoint blockade in breast cancer

GSE334497 Mus musculus (mouse) RNA-seq (gene expression) 10 samples Submitted 2026/06/09 Platform GPL21103
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 × 4T1, KO, vs 5 × 4T1, WT,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.
Summary (written by the submitters)
To investigate TROP2-dependent transcriptomic changes in breast cancer, we performed RNA-seq on frozen tumor sections from 4T1 Trop2 wild-type and Trop2 knockout tumors. This dataset was generated to define transcriptional programs regulated by TROP2 in the tumor microenvironment and to determine how TROP2 contributes to immune exclusion and resistance to immune checkpoint blockade.
Read the full summary ↓
Analysis of these tumors identified TROP2-associated enrichment of cell-cell contact and tight-junction pathways, while inflammatory, antitumor immune response, and T-cell cytotoxicity programs were relatively increased in Trop2 knockout tumors. These findings supported the conclusion that TROP2 promotes a claudin/tight-junction-mediated barrier that limits T-cell infiltration and impairs response to anti-PD-1 therapy in triple-negative breast cancer.
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 GSE334497_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 PRJNA1475339 and SRA study SRP707135. Searching any of these in the dataset finder brings you back here.

Study design
5 × 4T1, KO, vs 5 × 4T1, WT,

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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