Large-Scale Blood Proteomic Analysis Across Different Inflammatory Skin Conditions Reveals Extensive Immune...

Area of Science:

• Immunology
• Dermatology
• Proteomics

Background:

• Inflammatory skin diseases have complex molecular underpinnings.
• Systemic effects of common skin conditions require further large-scale proteomic investigation.

Purpose of the Study:

• To comprehensively analyze systemic proteomic expression across major inflammatory skin diseases.
• To identify shared and distinct protein signatures and their correlation with disease severity.

Main Methods:

• Serum proteomic analysis using Olink high-throughput multiplex assay in patients with alopecia areata, atopic dermatitis, psoriasis, hidradenitis suppurativa, vitiligo, and healthy controls.
• Identification of differentially expressed proteins (DEPs) based on fold change and false discovery rate.
• Correlation analysis between DEPs and clinical severity scores; Gene Ontology enrichment analysis.

Main Results:

• Hidradenitis suppurativa (HS) showed the highest systemic dysregulation, followed by alopecia areata (AA), atopic dermatitis (AD), psoriasis, and vitiligo.
• Significant overlap in DEPs was observed between HS and psoriasis, and between AA and AD.
• Distinct immune activation patterns were identified, including T-cell pathways, innate immunity, and cardiovascular markers in HS, correlating with disease severity.

Conclusions:

• Inflammatory skin diseases exhibit both common and unique systemic protein activation profiles.
• The identified overlaps suggest potential for developing shared therapeutic strategies for multiple skin conditions.