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Standalone single- and bi-layered human skin 3D models supported by recombinant silk feature native spatial organization
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Protein Science, Protein Technology.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Gene Technology. KTH, Centres, Science for Life Laboratory, SciLifeLab.ORCID iD: 0000-0002-6800-0432
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Gene Technology. KTH, Centres, Science for Life Laboratory, SciLifeLab.ORCID iD: 0000-0002-2649-7225
Department of Health Technology, Technical University of Denmark, Lyngby, Denmark.
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2025 (English)In: Biofabrication, ISSN 1758-5082, E-ISSN 1758-5090, Vol. 17, no 1, article id 015015Article in journal (Refereed) Published
Abstract [en]

Physiologically relevant human skin models that include key skin cell types can be used forin vitrodrug testing, skin pathology studies, or clinical applications such as skin grafts. However, there is still no golden standard for such a model. We investigated the potential of a recombinant functionalized spider silk protein, FN-silk, for the construction of a dermal, an epidermal, and a bilayered skin equivalent (BSE). Specifically, two formats of FN-silk (i.e. 3D network and nanomembrane) were evaluated. The 3D network was used as an elastic ECM-like support for the dermis, and the thin, permeable nanomembrane was used as a basement membrane to support the epidermal epithelium. Immunofluorescence microscopy and spatially resolved transcriptomics analysis demonstrated the secretion of key ECM components and the formation of microvascular-like structures. Furthermore, the epidermal layer exhibited clear stratification and the formation of a cornified layer, resulting in a tight physiologic epithelial barrier. Our findings indicate that the presented FN-silk-based skin models can be proposed as physiologically relevant standalone epidermal or dermal models, as well as a combined BSE.

Place, publisher, year, edition, pages
IOP Publishing , 2025. Vol. 17, no 1, article id 015015
Keywords [en]
3D in vitro model, basement membrane, bilayered skin model, cornification, recombinant silk, spatial transcriptomics, vascularization
National Category
Dermatology and Venereal Diseases Cell Biology
Identifiers
URN: urn:nbn:se:kth:diva-356696DOI: 10.1088/1758-5090/ad8b72ISI: 001348514700001PubMedID: 39454592Scopus ID: 2-s2.0-85208516743OAI: oai:DiVA.org:kth-356696DiVA, id: diva2:1914867
Note

QC 20241121

Available from: 2024-11-20 Created: 2024-11-20 Last updated: 2024-11-21Bibliographically approved

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Gkouma, SavviniBhalla, NayanikaFrapard, SoleneGiacomello, StefaniaStåhl, Patrik L.Widhe, MonaHedhammar, My

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Gkouma, SavviniBhalla, NayanikaFrapard, SoleneGiacomello, StefaniaStåhl, Patrik L.Widhe, MonaHedhammar, My
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Protein TechnologyGene TechnologyScience for Life Laboratory, SciLifeLab
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Biofabrication
Dermatology and Venereal DiseasesCell Biology

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