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Spatial and single-cell transcriptional profiling identifies functionally distinct human dermal fibroblast subpopulations

Philippeos, Christina and Telerman, Stephanie B and Oul{\`e}s, B{\'e}n{\'e}dicte and Pisco, Angela O and Shaw, Tanya J and Elgueta, Raul and Lombardi, Giovanna and Driskell, Ryan R and Soldin, Mark and Lynch, Magnus D and others

Previous studies have shown that mouse dermis is composed of functionally distinct fibroblast lineages. To explore the extent of fibroblast heterogeneity in human skin, we used a combination of comparative spatial transcriptional profiling of human and mouse dermis and single-cell transcriptional profiling of human dermal fibroblasts. We show that there are at least four distinct fibroblast populations in adult human skin, not all of which are spatially segregated. We define markers permitting their isolation and show that although marker expression is lost in culture, different fibroblast subpopulations retain distinct functionality in terms of Wnt signaling, responsiveness to IFN-γ, and ability to support human epidermal reconstitution when introduced into decellularized dermis. These findings suggest that ex vivo expansion or in vivo ablation of specific fibroblast subpopulations may have therapeutic applications in wound healing and diseases characterized by excessive fibrosis.

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Species: human
Number of cells: 184
Number of downloads: 115
Study size: 12MB
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