Article ; Online: Single-cell analysis of psoriasis resolution demonstrates an inflammatory fibroblast state targeted by IL-23 blockade.
2024 Volume 15, Issue 1, Page(s) 913
Abstract: Biologic therapies targeting the IL-23/IL-17 axis have transformed the treatment of psoriasis. However, the early mechanisms of action of these drugs remain poorly understood. Here, we perform longitudinal single-cell RNA-sequencing in affected ... ...
Abstract | Biologic therapies targeting the IL-23/IL-17 axis have transformed the treatment of psoriasis. However, the early mechanisms of action of these drugs remain poorly understood. Here, we perform longitudinal single-cell RNA-sequencing in affected individuals receiving IL-23 inhibitor therapy. By profiling skin at baseline, day 3 and day 14 of treatment, we demonstrate that IL-23 blockade causes marked gene expression shifts, with fibroblast and myeloid populations displaying the most extensive changes at day 3. We also identify a transient WNT5A+/IL24+ fibroblast state, which is only detectable in lesional skin. In-silico and in-vitro studies indicate that signals stemming from these WNT5A+/IL24+ fibroblasts upregulate multiple inflammatory genes in keratinocytes. Importantly, the abundance of WNT5A+/IL24+ fibroblasts is significantly reduced after treatment. This observation is validated in-silico, by deconvolution of multiple transcriptomic datasets, and experimentally, by RNA in-situ hybridization. These findings demonstrate that the evolution of inflammatory fibroblast states is a key feature of resolving psoriasis skin. |
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MeSH term(s) | Humans ; Psoriasis/drug therapy ; Psoriasis/genetics ; Psoriasis/metabolism ; Skin/metabolism ; Keratinocytes/metabolism ; Interleukin-23/genetics ; Interleukin-23/metabolism ; RNA/metabolism ; Fibroblasts/metabolism ; Single-Cell Analysis |
Chemical Substances | Interleukin-23 ; RNA (63231-63-0) |
Language | English |
Publishing date | 2024-01-30 |
Publishing country | England |
Document type | Journal Article |
ZDB-ID | 2553671-0 |
ISSN | 2041-1723 ; 2041-1723 |
ISSN (online) | 2041-1723 |
ISSN | 2041-1723 |
DOI | 10.1038/s41467-024-44994-w |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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