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Single-cell profiling reveals a critical role for hypoxia-inducible factor-1a signaling in leukocytes during human craniotomy infection

GSE249319 Homo sapiens (human) Single-cell RNA-seq 14 samples Submitted 2024/05/09 Platform GPL24676
At a glance

Single-cell RNA-seq · human · 14 samples

What it is
Single-cell RNA-seqGene activity measured in thousands of individual cells, so cell types can be told apart.
Organism
Homo sapiens (human)
Samples
14 samples: 4 × Blood, Patient vs 4 × Bone Flap, Patient vs 2 × Subgalea, PatientGroups 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
Tissue niche influences immune and metabolic profiles to Staphylococcus aureus biofilm infectionNature communications · 2024
Summary (written by the submitters)
Neurosurgeries complicated by bacterial infection are often associated with poor clinical prognosis and prolonged treatment strategies involving multiple surgeries, placing additional morbidity on an already fragile patient population. Craniotomy is one of the most common neurosurgical procedures with an infection rate of 1-7%; however, the cellular and molecular signatures associated with craniotomy infection in human subjects have not yet been investigated.
Read the full summary ↓
We performed a retrospective study of over 2,500 craniotomies, which revealed diversity in patient demographics, pathogen identity, and surgical landscapes associated with infection. Leukocyte profiling in tissues procured from craniotomy infection patients revealed a predominance of granulocytic myeloid-derived suppressor cells (G-MDSCs), which were absent from the blood. Single-cell transcriptomics identified immunometabolic shifts in leukocytes invading infected tissues, including a prominent hypoxia-inducible factor-1 (HIF-1) signature, whereas peripheral blood cells from the same patient were largely quiescent. The importance of HIF-1 signaling was validated using a mouse model of Staphylococcus aureus craniotomy infection, where the local delivery of HIF-1 inhibitor microparticles attenuated proinflammatory cytokine production concomitant with a significant increase in leukocyte infiltrates into the infected brain and galea. These findings establish G-MDSCs as a major infiltrate during human craniotomy infection and identify conserved transcriptional signatures across several leukocyte populations that may represent promising therapeutic targets for craniotomy infection in the face of increasing antimicrobial resistance.
Published in
Tissue niche influences immune and metabolic profiles to Staphylococcus aureus biofilm infection
Van Roy Z, Arumugam P, Bertrand BP et al. · Nature communications 2024 · PMID 39420209 · doi:10.1038/s41467-024-53353-8
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 GSE249319_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 PRJNA1048516 and SRA study SRP475748. Searching any of these in the dataset finder brings you back here.

Study design
4 × Blood, Patient vs 4 × Bone Flap, Patient vs 2 × Subgalea, Patient

Supports a between-group comparison across 10 samples.

How we read this: 3 replicated groups read from 14 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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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.