Vesicular hand eczema transcriptome analysis provides insights into its pathophysiology.

Area of Science:

• Dermatology
• Molecular Biology
• Genomics

Background:

• Hand eczema is a prevalent inflammatory skin condition with unknown pathogenesis.
• Understanding the molecular basis of hand eczema may reveal new therapeutic targets.

Purpose of the Study:

• To profile the transcriptome of lesional palmar epidermal skin in vesicular hand eczema patients.
• To identify differentially expressed genes and proteins in affected skin compared to non-lesional and healthy controls.

Main Methods:

• RNA-sequencing of lesional and non-lesional palmar epidermis from vesicular hand eczema patients and healthy controls.
• Validation using real-time quantitative PCR and immunohistochemistry.
• Comparative analysis of gene and protein expression profiles.

Main Results:

• Lesional skin exhibited significantly high expression of genes/proteins related to keratinocyte host defense and inflammation.
• Alterations in molecules involved in epidermal differentiation were observed in lesional skin.
• Immune signaling genes were upregulated in lesional skin, though at low levels.
• Non-lesional patient skin showed no significant differences from healthy controls.
• Distinct transcriptomic profile identified in lesional vesicular hand eczema skin.

Conclusions:

• Vesicular hand eczema skin displays a unique molecular signature compared to non-lesional and healthy skin.
• Significant overlap exists between the transcriptomes of vesicular hand eczema and atopic dermatitis.
• Findings suggest that treatments effective for atopic dermatitis may also benefit vesicular hand eczema patients.