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Dermal fibroblasts attenuate osteoarthritis by restoring synovial fibroblast homeostasis

GSE327818 Mus musculus (mouse) Single-cell RNA-seq 9 samples Submitted 2026/06/24 Platform GPL24247
At a glance

Single-cell RNA-seq · mouse · 9 samples

What it is
Single-cell RNA-seqGene activity measured in thousands of individual cells, so cell types can be told apart. Read from the summary: GEO's own type field only says 'expression profiling by sequencing', so confirm it in the paper.
Organism
Mus musculus (mouse)
Samples
9 samples: 3 × scRNA-seq of P vs 3 × scRNA-seq of D vs 3 × scRNA-seq of 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
Dermal fibroblasts attenuate osteoarthritis by restoring synovial fibroblast homeostasisJournal of orthopaedic translation · 2026
Summary (written by the submitters)
Background: Managing early-to-mid-stage knee osteoarthritis (OA) remains an unmet clinical need. Synovitis drives OA progression, but current anti-inflammatory therapies offer limited efficacy. Disrupted fibroblast lineage homeostasis is central in chronic inflammation, and targeting this may attenuate synovitis and pathological synovium-cartilage crosstalk in knee OA.
Read the full summary ↓
Methods: Synovial single-cell sequencing, clinical histological and transcriptomic data assessed fibroblast lineage changes and similarities between dermal fibroblasts (DFb) and synovial fibroblasts. Labeled DFb injection in rat knees evaluated cell retention. Rat anterior cruciate ligament transection (ACLT) model with intra-articular DFb injection assessed the therapeutic efficacy. Co-cultures characterized DFb paracrine effects on synovial fibroblasts and chondrocytes. Proteomics identified active components in DFb supernatants. Results: OA synovium exhibits disrupted fibroblast lineage homeostasis, marked by a prominent pro-inflammatory phenotype in synovial fibroblasts. DFb show high transcriptomic and morphological similarity to synovial fibroblasts from healthy donors. Post-injection, DFb engrafted within the synovium with more than 3-week retention. Intra-articular DFb injection alleviated synovitis and cartilage degeneration in ACLT-induced OA rats. Co-cultures confirmed DFb alleviated cytokine-induced inflammatory responses in synovial fibroblasts and chondrocytes via paracrine mechanisms, and integrated proteomic/transcriptomic analyses identified apolipoprotein D (APOD) as a potential key mediator of these anti-inflammatory effects. Conclusions: This study validates a novel cell therapy for OA that targets disrupted fibroblast lineage homeostasis in synovitis. By modulating pro-inflammatory synovial fibroblasts and alleviating synovitis through restoring lineage homeostasis, DFb ameliorate OA progression, providing a new theoretical basis and practical approach for OA cell therapy research.
Published in
Dermal fibroblasts attenuate osteoarthritis by restoring synovial fibroblast homeostasis
Shi L, Xing T, Liu K et al. · Journal of orthopaedic translation 2026 · PMID 42305141 · doi:10.1016/j.jot.2026.101138
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 GSE327818_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 PRJNA1452836 and SRA study SRP691420. Searching any of these in the dataset finder brings you back here.

Study design
3 × scRNA-seq of P vs 3 × scRNA-seq of D vs 3 × scRNA-seq of C

Supports a between-group comparison across 9 samples.

How we read this: 3 replicated groups read from 9 sample titles; they account for 9 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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