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Targeting an essential viral oncoprotein with an IL-7-enhanced mRNA vaccine induces durable immunity to Merkel cell carcinoma

GSE305197 Homo sapiens (human) RNA-seq (gene expression) 3 samples Submitted 2025/08/13 Platform GPL24676
At a glance

RNA-seq (gene expression) · human · 3 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
Merkel cell carcinomaThis series is part of our curated briefing on it.
Samples
3 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
Targeting an essential viral oncoprotein with an IL-7-enhanced mRNA vaccine induces durable immunity to Merkel cell carcinomaCell reports · 2025
Summary (written by the submitters)
mRNA technologies have reinvigorated cancer vaccine development, but the optimal antigenic targets remain unclear. Further, generation of memory CD8+ T cell responses, critical for durable immunity, remains a challenge. We identified the Merkel cell carcinoma (MCC) Large T Antigen (LTA) as an exemplar target antigen, required for tumor cell survival and immunogenic in a cancer with rising incidence and high unmet need.
Read the full summary ↓
We developed an mRNA vaccine to MCC-LTA in murine studies and MCC patient samples and showed that antigen loss developed rapidly and caused resistance when the antigen was not essential for tumor survival. To improve T cell response quality and durability, we co-encoded LTA and IL-7, co-localizing proliferative and memory signals spatially and temporally with antigen exposure. IL-7-containing mRNA vaccines enhanced T cell expansion, memory differentiation and sustained tumor control. We propose that antigen essentiality and signal co-encoding may be adapted to improve the efficacy of mRNA therapeutics.
Published in
Targeting an essential viral oncoprotein with an IL-7-enhanced mRNA vaccine induces durable immunity to Merkel cell carcinoma
Frey A, Clulo K, Fei Y et al. · Cell reports 2025 · PMID 41042672 · doi:10.1016/j.celrep.2025.116359
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 GSE305197_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 PRJNA1304576 and SRA study SRP608178. Searching any of these in the dataset finder brings you back here.

Samples in this study

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