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Single-cell RNA sequencing reveals cellular heterogeneity in lineage specification of MC38 subcutaneous tumor cells with either SPP1 overexpression or vector control

GSE298348 Mus musculus (mouse) Single-cell RNA-seq 2 samples Submitted 2025/09/24 Platform GPL34290
At a glance

Single-cell RNA-seq · mouse · 2 samples

What it is
Single-cell RNA-seqGene activity measured in thousands of individual cells, so cell types can be told apart.
Organism
Mus musculus (mouse)
Samples
2 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
SPP1 Drives Colorectal Cancer Liver Metastasis and Immunotherapy Resistance by Stimulating CXCL12 Production in Cancer-Associated FibroblastsCancer research · 2026
Summary (written by the submitters)
SPP1 (secreted phosphoprotein 1), also known as osteopontin, has emerged as a pivotal factor in the tumor microenvironment (TME) across various cancers. It has been reported that SPP1-positive macrophages are associated with immunosuppressive activity and poor prognosis in colorectal cancer (CRC). The increasing proportion of SPP1-positive macrophages contributes to immune suppression and immune desert by inhibiting T cell function in liver metastatic lesions.
Read the full summary ↓
However, the role of SPP1 in colorectal cancer liver metastasis (CRLM) remains incompletely understood. Therefore, the impact of tumor-secreted SPP1 on the CRC microenvironment warrants further investigation. To explore the effect of SPP1 on diverse TME cell populations, we conducted single-cell RNA sequencing on MC38 xenografts. Our results revealed an increase in fibroblasts and a concurrent decrease in T cells following SPP1 overexpression, suggesting that SPP1 promotes cancer-associated fibroblast (CAF) infiltration into the CRC TME.
Published in
SPP1 Drives Colorectal Cancer Liver Metastasis and Immunotherapy Resistance by Stimulating CXCL12 Production in Cancer-Associated Fibroblasts
Liu S, Zhang Z, Wang Z et al. · Cancer research 2026 · PMID 41051794 · doi:10.1158/0008-5472.CAN-24-4916
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 GSE298348_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: Single-cell studies usually ship their counts as 10x files (matrix.mtx, barcodes.tsv, features.tsv), an .h5 file, or an .rds / .h5ad object that Seurat or Scanpy can open. Look for those among the supplementary files.

Also filed as BioProject PRJNA1268999 and SRA study SRP588374. Searching any of these in the dataset finder brings you back here.

Samples in this study

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