ArticleThe Journal of allergy and clinical immunology2025
Positionally distinct interferon-stimulated dermal immune-acting fibroblasts promote neutrophil recruitment in Sweet syndrome.
Article in The Journal of allergy and clinical immunology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Sweet Syndrome Beyond the Neutrophil.Experimental dermatology · 2026Article
- Fibroblasts resistScience advances · 2026Article
- Type I and II Interferon Signalling Characterizes the Transcriptional Landscape of Sweet Syndrome.Experimental dermatology · 2026Article
- Disease context dictates the cellular targets of IL-17 in inflammatory skin disease.bioRxiv : the preprint server for biology · 2026Article
- Dermal fibroblasts respond to IL-4 and IL-13 and promote T cell recruitment in atopic dermatitis.The Journal of clinical investigation · 2026Article
- A Case of Sweet Syndrome Complicating Ulcerative Colitis Treated With Upadacitinib.ACG case reports journal · 2025Article
- Keratinocyte-neutrophil interactions revealed as targetable drivers of sustained inflammation in Sweet syndrome.The Journal of clinical investigation · 2025Article
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18 authors.
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Abstract
backgroundSweet syndrome is an inflammatory skin disease characterized by robust neutrophil infiltration into the dermis. The pathogenesis of Sweet syndrome and its distinguishing features compared to other neutrophilic dermatoses, such as pyoderma gangrenosum, remain poorly understood.
objectiveOur aim was to define the cellular and molecular landscape of the skin of patients with Sweet syndrome.
methodsSingle-nucleus and bulk transcriptomics were performed on archival clinical skin samples from patients with Sweet syndrome, patients with pyoderma gangrenosum, and healthy controls. For mechanistic validation, functional experiments were performed with primary human cells. Spatial transcriptomics with single-molecule resolution was used to map cell types to tissue location.
resultsA prominent interferon signature was identified in Sweet syndrome skin that was reduced in tissue samples from patients with pyoderma gangrenosum and healthy controls. This signature was observed in different subsets of cells, including fibroblasts that expressed interferon-induced genes. Functionally, this response was supported by analysis of cultured dermal fibroblasts that were observed to highly express neutrophil chemokines in response to activation by type I interferon. Furthermore, spatial transcriptomics revealed 2 positionally distinct interferon-activated fibroblast subsets: CXCL1-positive fibroblasts near neutrophil infiltrates and CXCL12-positive fibroblasts distal to these infiltrates.
conclusionThis study defines the cellular and molecular landscape of neutrophilic dermatoses and implicates dermal immune-acting fibroblasts in Sweet syndrome pathogenesis through type I interferon recognition and neutrophil recruitment.
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