Transcriptomics and network analysis highlight potential pathways in the pathogenesis of pterygium

Area of Science:

• Ophthalmology
• Molecular Biology
• Genetics

Background:

• Pterygium is a common ocular condition with unclear triggers and pathogenesis.
• Understanding its molecular mechanisms is crucial for identifying therapeutic targets.

Purpose of the Study:

• To identify key pathogenic mediators and therapeutic targets in pterygium using gene expression meta-analysis.
• To elucidate the molecular differences between active and atrophic pterygia.

Main Methods:

• Performed meta-analysis of gene expression studies from public repositories and a Brazilian cohort.
• Conducted differential gene expression analysis and gene set enrichment analysis.
• Reconstructed miRNA-mRNA regulatory networks.

Main Results:

• Identified 154 up-regulated and 58 down-regulated genes in pterygium.
• Highlighted extracellular matrix remodeling, cornified envelope formation, and unsaturated fatty acid metabolism as key pathways.
• Found differential gene expression between active and atrophic pterygia.

Conclusions:

• Gene expression meta-analysis provides novel insights into pterygium pathophysiology.
• Extracellular matrix remodeling is a significant pathway in pterygium development.
• Identified potential molecular targets for pterygium treatment.