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Lipid metabolism dysregulation in solar lentigo: a multi-system-level analysis reveals membrane instability and energy homeostasis disruption

GSE318414 Homo sapiens (human) RNA-seq (gene expression) 14 samples Submitted 2026/02/06 Platform GPL24676
At a glance

RNA-seq (gene expression) · human · 14 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
Homo sapiens (human)
Samples
14 samples: 7 × Lentigo vs 7 × ControlGroups 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
Lipid metabolism dysregulation in solar lentigo: a multi-system-level analysis reveals membrane instability and energy homeostasis disruptionFrontiers in cell and developmental biology · 2026
Summary (written by the submitters)
Solar lentigo is a common hyperpigmented skin condition caused by chronic ultraviolet exposure, primarily affecting photoaged skin. While previous investigations focused on inflammatory and melanogenic mechanisms, the comprehensive role of lipid metabolism in pathogenesis remains unclear. We aimed to investigate systemic alterations in lipid metabolism and their contribution to solar lentigo development.
Read the full summary ↓
We performed comprehensive analysis of RNA sequencing data from solar lentigo lesions and control skin samples (n=7 per group) using metabolic flux simulations, gene co-expression networks, and protein-protein interaction analysis. These multi-system approaches were integrated to identify coordinated alterations in lipid metabolic pathways. Solar lentigo samples exhibited coordinated inhibition of fatty acid elongation, acetyl-CoA carboxylase activity, and sphingolipid biosynthesis, alongside impaired cholesterol synthesis via reduced squalene epoxidase and 7-dehydrocholesterol reductase activity. Compensatory upregulation of phospholipid synthesis enzymes and dihydroceramide desaturases was observed. Pathway disruption and altered calcium signaling, indicating aberrant cellular energy metabolism and membrane integrity. These findings demonstrate that solar lentigo pathogenesis involves systematic lipid metabolism dysregulation beyond melanogenesis, causing membrane instability, energy homeostasis disruption and redox imbalance. The identification of specific metabolic bottlenecks reveals novel targets for lipid-based therapeutic approaches in pigmentary diseases.
Published in
Lipid metabolism dysregulation in solar lentigo: a multi-system-level analysis reveals membrane instability and energy homeostasis disruption
Kim S, Lee W, Kim J et al. · Frontiers in cell and developmental biology 2026 · PMID 41847383 · doi:10.3389/fcell.2026.1751543
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 GSE318414_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: 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 PRJNA1418692. Searching any of these in the dataset finder brings you back here.

Study design
7 × Lentigo vs 7 × Control

Supports a between-group comparison across 14 samples.

How we read this: 2 replicated groups read from 14 sample titles; they account for 14 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.