Original Article
 

Shared inflammatory and stress-response transcriptomic alterations in irritant contact dermatitis: a cross-species analysis

Cross-species Molecular Signatures in ICD

Abstract

Irritant contact dermatitis (ICD) is a common inflammatory skin disorder characterized by epidermal barrier disruption and dysregulated inflammatory responses, yet its molecular basis remains incompletely understood.

To identify conserved transcriptional alterations associated with ICD, we performed an integrated cross-species transcriptomic analysis of human and murine Gene Expression Omnibus datasets generated using microarray and RNA sequencing platforms. Genes were prioritized using a π-value–based ranking strategy integrating expression effect size and statistical significance, followed by orthology mapping, functional enrichment, and protein–protein interaction network analyses.
A total of 174 prioritized genes were shared across all datasets, forming a conserved cross-species transcriptomic signature associated with ICD. The shared signature comprised increased expression of inflammatory and barrier-associated genes, including S100A8, S100A9, SERPINB3 and SERPINB4, KRT6A, and GJB2, together with mitotic regulators, such as CDK1, CDC20, and AURKB, whereas differentiation- and homeostasis-associated regulators, including GATA3, RORA, and LRP4, were consistently reduced. Functional enrichment identified mitotic cell-cycle processes, chromosome segregation, and Aurora kinase–related pathways, as the dominant biological themes, together with cornified envelope formation, while network analysis prioritized CDK1, CDC20, AURKB, and BIRC5 among the principal hub genes.
Collectively, these findings identify a conserved ICD-associated transcriptomic program consistent with keratinocyte hyperproliferation, impaired epidermal differentiation, barrier remodeling, and innate inflammatory responses. Although requiring independent experimental validation, this conserved signature provides a framework for future mechanistic studies and for the development of candidate biomarkers in irritant-induced skin inflammation.

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Keywords
Dermatitis Irritant Gene expression profiling Immunity Innate Keratinocytes Species specificity Transcriptome

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Asemani Y, Ezzatifar F, Kamalinejad M, Anissian A, Tohidfar M, Karimi F. Shared inflammatory and stress-response transcriptomic alterations in irritant contact dermatitis: a cross-species analysis. Iran J Allergy Asthma Immunol. 2026;:1-16.