Impaired skin regeneration and remodeling after cutaneous injury and chemically induced hyperplasia in taps-transgenic mice
Recently, we identified an AP-1-dependent target gene in 12-O-tetradecanoylphorbol-13-acetate (TPA)-treated mouse back skin, which encodes a retroviral-like aspartic proteinase (Taps/Asprv1). Taps expression was detected almost exclusively in stratified epithelia of mouse embryos and adult tissues,...
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| Main Authors: | , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
[July 2010]
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| In: |
The journal of investigative dermatology
Year: 2010, Volume: 130, Issue: 7, Pages: 1922-1930 |
| ISSN: | 1523-1747 |
| DOI: | 10.1038/jid.2010.54 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1038/jid.2010.54 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0022202X15349149 
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| Author Notes: | Maike Hildenbrand, Verena Rhiemeier, Bettina Hartenstein, Bernd Lahrmann, Niels Grabe, Peter Angel and Jochen Hess |
| Summary: | Recently, we identified an AP-1-dependent target gene in 12-O-tetradecanoylphorbol-13-acetate (TPA)-treated mouse back skin, which encodes a retroviral-like aspartic proteinase (Taps/Asprv1). Taps expression was detected almost exclusively in stratified epithelia of mouse embryos and adult tissues, and enhanced protein levels were present in several non-neoplastic human skin disorders, implicating a crucial role for differentiation and homeostasis of multilayered epithelia. Here, we generated a mouse model in which Taps transgene expression is under the control of the human ubiquitin C promoter (UBC-Taps). Although no obvious phenotype was observed in normal skin development and homeostasis, these mice showed a significant delay in cutaneous wound closure compared with control animals. Shortly after re-epithelialization, we found an increase in keratinocytes in the stratum granulosum, which express Filaggrin, a late differentiation marker. A hypergranulosum-like phenotype with increased numbers of Filaggrin-positive keratinocytes was also observed in UBC-Taps mice after administration of TPA. In summary, these data show that aberrant Taps expression causes impaired skin regeneration and skin remodeling after cutaneous injury and chemically induced hyperplasia. |
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| Item Description: | Gesehen am 10.05.2023 |
| Physical Description: | Online Resource |
| ISSN: | 1523-1747 |
| DOI: | 10.1038/jid.2010.54 |