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Chikungunya virus persists in joint-associated macrophages and promotes chronic disease in mice [scRNA-seq]

GSE300299 Mus musculus (mouse) Single-cell RNA-seq 12 samples Submitted 2026/02/05 Platform GPL24247
At a glance

Single-cell RNA-seq · mouse · 12 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
12 samples: 3 × M vs 3 × A vs 3 × U vs 3 × CGroups 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
Chikungunya virus persists in joint-associated macrophages and promotes chronic disease in miceNature microbiology · 2026
Summary (written by the submitters)
Arthritogenic alphaviruses, including chikungunya virus (CHIKV), Mayaro virus and Ross River virus, cause long-lasting musculoskeletal pain and inflammation. However, the mechanisms driving chronic disease remain unclear. Here, we used single-cell RNA sequencing, spatial transcriptomics and flow cytometry to investigate joint-associated tissues in alphavirus-infected mice at a late stage of infection.
Read the full summary ↓
We identified an accumulation of inflammatory macrophages in joint-associated tissues with elevated expression of inflammatory markers. These cells harbour CHIKV RNA, suggesting ongoing viral replication during chronic disease. We also identified an accumulation of CD4+ T cells in these tissues expressing Ifng, and found that depletion of CD4+ T cells diminished major histocompatibility complex class II expression on joint macrophages, highlighting their potential role in inflammation. Treatment with a small molecule inhibitor of CHIKV replication during chronic disease reduced viral RNA and joint inflammation. Our data suggest that macrophages harbour replicating viral RNA and contribute to the sustained joint inflammation associated with chronic alphavirus disease.
Published in
Chikungunya virus persists in joint-associated macrophages and promotes chronic disease in mice
Zarrella KM, Sheridan RM, Ware BC et al. · Nature microbiology 2026 · PMID 41922840 · doi:10.1038/s41564-026-02303-9
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 GSE300299_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 PRJNA1280064 and SRA study SRP593423. Searching any of these in the dataset finder brings you back here.

Study design
3 × M vs 3 × A vs 3 × U vs 3 × C

Supports a between-group comparison across 12 samples.

How we read this: 4 replicated groups read from 12 sample titles; they account for 12 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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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.