In our study published in Allergy, we investigated how immune cells and their interactions are spatially organized in the skin of patients with atopic dermatitis. Using spatial transcriptomics combined with single-cell RNA sequencing data, imaging mass cytometry and multiplex immunofluorescence, we identified conserved immune niches at the dermal-epidermal junction.
These niches are characterized by the close spatial association of CD4+ T cells and mature migratory dendritic cells (mmDCs) and show signatures of local T cell activation and Type 2 cytokine signaling. They are embedded within a broader inflammatory microenvironment involving fibroblasts and keratinocytes and display transcriptional features resembling tertiary lymphoid structures.
Our findings suggest that specialized immune niches within the skin may sustain local T cell activation and thereby contribute to chronic inflammation and disease relapse in atopic dermatitis. The mmDC – T cell interaction therefore represents an interesting potential target for future therapeutic strategies aimed at achieving more durable disease control.
Read the manuscript: https://onlinelibrary.wiley.com/doi/10.1111/all.70513




