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Longitudinal analysis of lipid changes in the sciatic nerve caused by overexpression of PMP22 in models of CMT1A.

GSE312450 Mus musculus (mouse) RNA-seq (gene expression) 25 samples Submitted 2026/03/07 Platform GPL24247
At a glance

RNA-seq (gene expression) · mouse · 25 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
Mus musculus (mouse)
Samples
25 samples: 25 samples, each with a distinct title — no replicated groupsGroups 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
Longitudinal analysis of lipid changes in the sciatic nerve caused by overexpression of PMP22 in murine models of CMT1AJournal of lipid research · 2026
Summary (written by the submitters)
Charcot-Marie-Tooth type 1A (CMT1A), a prevalent progressive demyelinating peripheral neuropathy is caused by a duplication of the peripheral myelin protein (PMP22) gene. PMP22 is crucial for formation of compact myelin, but the mechanism by which PMP22 overexpression results in CMT1A pathogenesis remains elusive. To investigate these mechanisms, we analyzed the C3 and C22 mouse models, carrying 5 and 10 additional copies of the human PMP22 gene, at five developmental stages (3, 5, 7, 9, and 12 weeks of age).
Read the full summary ↓
We focused on alterations in lipid synthesis associated with PMP22 overexpression and disease progression, and found a clear gene-dosage effect. In addition, we examined mice on the C3 background with a Schwann cell–specific c-Jun knockout. Our findings suggest potential avenues for dietary interventions, to improve myelination in CMT1A.
Published in
Longitudinal analysis of lipid changes in the sciatic nerve caused by overexpression of PMP22 in murine models of CMT1A
Hellings TP, Lamzira-Arichi N, Vreijling JP et al. · Journal of lipid research 2026 · PMID 41825735 · doi:10.1016/j.jlr.2026.101018
This dataset
Open GSE312450 in finder → Find more mouse RNA-seq datasets →
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.

Series matrix ↓
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 GSE312450_RAW.tar (it can run to tens of gigabytes).

All supplementary files ↗ Whole study · RAW.tar ↓
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.

Raw reads on ENA ↗

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 PRJNA1373334 and SRA study SRP651194. Searching any of these in the dataset finder brings you back here.

NCBI GEO page ↗ Paper (PMID 41825735) ↗
Study design
25 samples, each with a distinct title — no replicated groups

Any grouping that defines a comparison lives in the sample characteristics, which GEO records separately from the titles.

How we read this: Read from 25 sample titles: 25 distinct titles with little repetition. 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
Datasets on a similar topic

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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.