High-throughput transcriptome and pathogenesis analysis of clinical psoriasis.

Area of Science:

• Dermatology and Molecular Biology
• Genomics and Transcriptomics
• Systems Biology

Background:

• Psoriasis pathogenesis remains incompletely understood, with limited focus on systemic immunological mechanisms.
• Obesity and emotional factors suggest psoriasis is a complex systemic disease beyond skin immunology.
• High-throughput transcriptome analysis offers a comprehensive approach to understanding disease mechanisms.

Purpose of the Study:

• To investigate transcriptome alterations in clinical psoriasis skin samples.
• To comprehensively assess psoriasis pathogenesis using pathway analysis.
• To identify key biological pathways implicated in psoriasis.

Main Methods:

• Performed transcriptome sequencing on clinical psoriatic samples.
• Conducted biological pathway analyses on differentially expressed RNAs (DE_RNAs) and competing endogenous RNAs (ceRNAs).
• Utilized qRT-PCR and immunofluorescence staining to validate DE_RNAs and enriched pathways.

Main Results:

• Identified numerous DE_RNAs between psoriasis patients and healthy controls.
• Pathway analysis highlighted PPAR-fatty acid metabolism, neural-hormone regulation, and circadian entrainment as significantly enriched.
• Validated gene expression changes for key genes within these pathways (e.g., FADS2, EPHA2, CRY2) via histological staining.

Conclusions:

• Transcriptome analysis reveals significant molecular changes in psoriasis.
• Identified PPAR-fatty acid metabolism, neural-hormone regulation, and circadian entrainment as critical pathways in psoriasis.
• These findings provide novel insights into the systemic nature of psoriasis.