Related Experiment Video
Updated: Apr 30, 2026
03:08
Using Human Differentially Expressed Gene Lists to Perform Downstream Pathway Enrichment Analysis and Target Prioritization
Published on: October 3, 2025
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Transcriptomic meta-analysis identifies core molecular pathways in plaque psoriasis
Teresa Torres-Moral1,2, Josep Riera-Monroig2,3, Gemma Tell-Martí1
1Center for Biomedical Network Research on Rare Diseases (CIBERER), Carlos III Health Institute, Barcelona, Spain.
Summary
This study integrates psoriasis gene expression data to reveal consistent immune patterns. It highlights new potential pathways in metabolism and mitochondrial function for future research.
Area of Science:
- Immunology
- Dermatology
- Genomics
- Systems Biology
Background:
- Psoriasis is an immune-mediated inflammatory skin disease.
- Dysregulated immune cell and skin cell (keratinocytes, fibroblasts) interactions drive psoriasis.
- Existing transcriptomic data for psoriasis is heterogeneous and lacks integration.
Purpose of the Study:
- To integrate transcriptomic data from multiple independent studies on plaque psoriasis.
- To identify reproducible immune-gene expression patterns in psoriatic skin.
- To discover novel, hypothesis-generating pathways beyond known immune responses.
Main Methods:
- Systematic review and meta-analysis of 44 transcriptomic datasets (975 samples).
- Focus on a curated set of immune-related genes comparing lesional psoriatic skin to non-lesional and healthy skin.
- Harmonization of data, random-effects modeling for differential expression, and functional enrichment analysis (Reactome, KEGG, GO).
Main Results:
- Identified 1780 consistently dysregulated immune-related genes in lesional psoriasis.
- Confirmed known immune pathways (e.g., IL-23/Th17, cytokine responses, type I interferon).
- Discovered 661 psoriasis-associated genes not previously highlighted, suggesting roles in glucose metabolism, FoxO signaling, and mitophagy.
Conclusions:
- Refined consensus immune signatures in psoriasis by integrating extensive transcriptomic data.
- Prioritized metabolic and mitochondrial processes as novel, testable hypotheses for psoriasis research.
- Suggests a link between immune activation, cellular energy metabolism, and mitochondrial quality control in psoriatic skin.
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