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Hamada M, Takaya K, Wang Q, Otaki M, Imbe Y, Nakajima Y, Sakai S, Okabe K, Aramaki-Hattori N, Kishi K. Regeneration of Panniculus Carnosus Muscle in Fetal Mice Is Characterized by the Presence of Actin Cables. Biomedicines 2023; 11:3350. [PMID: 38137571 PMCID: PMC10742160 DOI: 10.3390/biomedicines11123350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 12/11/2023] [Accepted: 12/14/2023] [Indexed: 12/24/2023] Open
Abstract
Mammalian skin, including human and mouse skin, does not regenerate completely after injury; it is repaired, leaving a scar. However, it is known that skin wounds up to a certain stage of embryonic development can regenerate. The mechanism behind the transition from regeneration to scar formation is not fully understood. Panniculus carnosus muscle (PCM) is present beneath the dermal fat layer and is a very important tissue for wound contraction. In rodents, PCM is present throughout the body. In humans, on the other hand, it disappears and becomes a shallow fascia on the trunk. Fetal cutaneous wounds, including PCM made until embryonic day 13 (E13), regenerate completely, but not beyond E14. We visualized the previously uncharacterized development of PCM in the fetus and investigated the temporal and spatial changes in PCM at different developmental stages, ranging from full regeneration to non-regeneration. Furthermore, we report that E13 epidermal closure occurs through actin cables, which are bundles of actomyosin formed at wound margins. The wound healing process of PCM suggests that actin cables may also be associated with PCM. Our findings reveal that PCM regenerates through a similar mechanism.
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Affiliation(s)
- Mariko Hamada
- Department of Plastic and Reconstructive Surgery, Tachikawa Hospital, 4-2-22 Nishiki-cho, Tachikawa-shi, Tokyo 190-8531, Japan;
- Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (K.T.); (M.O.); (Y.N.); (S.S.); (K.O.); (N.A.-H.)
| | - Kento Takaya
- Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (K.T.); (M.O.); (Y.N.); (S.S.); (K.O.); (N.A.-H.)
| | - Qi Wang
- Faculty of Pharmacy, Keio University, 1-5-30 Shiba Koen, Minato-ku, Tokyo 105-8512, Japan; (Q.W.); (Y.I.)
| | - Marika Otaki
- Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (K.T.); (M.O.); (Y.N.); (S.S.); (K.O.); (N.A.-H.)
| | - Yuka Imbe
- Faculty of Pharmacy, Keio University, 1-5-30 Shiba Koen, Minato-ku, Tokyo 105-8512, Japan; (Q.W.); (Y.I.)
| | - Yukari Nakajima
- Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (K.T.); (M.O.); (Y.N.); (S.S.); (K.O.); (N.A.-H.)
| | - Shigeki Sakai
- Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (K.T.); (M.O.); (Y.N.); (S.S.); (K.O.); (N.A.-H.)
| | - Keisuke Okabe
- Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (K.T.); (M.O.); (Y.N.); (S.S.); (K.O.); (N.A.-H.)
| | - Noriko Aramaki-Hattori
- Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (K.T.); (M.O.); (Y.N.); (S.S.); (K.O.); (N.A.-H.)
| | - Kazuo Kishi
- Department of Plastic and Reconstructive Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; (K.T.); (M.O.); (Y.N.); (S.S.); (K.O.); (N.A.-H.)
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Jacob T, Annusver K, Czarnewski P, Dalessandri T, Kalk C, Levra Levron C, Campamà Sanz N, Kastriti ME, Mikkola ML, Rendl M, Lichtenberger BM, Donati G, Björklund ÅK, Kasper M. Molecular and spatial landmarks of early mouse skin development. Dev Cell 2023; 58:2140-2162.e5. [PMID: 37591247 PMCID: PMC11088744 DOI: 10.1016/j.devcel.2023.07.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 05/05/2023] [Accepted: 07/21/2023] [Indexed: 08/19/2023]
Abstract
A wealth of specialized cell populations within the skin facilitates its hair-producing, protective, sensory, and thermoregulatory functions. How the vast cell-type diversity and tissue architecture develops is largely unexplored. Here, with single-cell transcriptomics, spatial cell-type assignment, and cell-lineage tracing, we deconstruct early embryonic mouse skin during the key transitions from seemingly uniform developmental precursor states to a multilayered, multilineage epithelium, and complex dermal identity. We identify the spatiotemporal emergence of hair-follicle-inducing, muscle-supportive, and fascia-forming fibroblasts. We also demonstrate the formation of the panniculus carnosus muscle (PCM), sprouting blood vessels without pericyte coverage, and the earliest residence of mast and dendritic immune cells in skin. Finally, we identify an unexpected epithelial heterogeneity within the early single-layered epidermis and a signaling-rich periderm layer. Overall, this cellular and molecular blueprint of early skin development-which can be explored at https://kasperlab.org/tools-establishes histological landmarks and highlights unprecedented dynamic interactions among skin cells.
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Affiliation(s)
- Tina Jacob
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Karl Annusver
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Paulo Czarnewski
- Department of Biochemistry and Biophysics, National Bioinformatics Infrastructure Sweden, Science for Life Laboratory, Stockholm University, 17165 Stockholm, Sweden
| | - Tim Dalessandri
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Christina Kalk
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Chiara Levra Levron
- Department of Life Sciences and Systems Biology, Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy
| | - Nil Campamà Sanz
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Maria Eleni Kastriti
- Department of Physiology and Pharmacology, Karolinska Institutet, 17177 Stockholm, Sweden; Department of Neuroimmunology, Center for Brain Research, Medical University of Vienna, 1090 Vienna, Austria
| | - Marja L Mikkola
- Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Science, University of Helsinki, 00014 Helsinki, Finland
| | - Michael Rendl
- Institute for Regenerative Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Beate M Lichtenberger
- Skin and Endothelium Research Division, Department of Dermatology, Medical University of Vienna, 1090 Vienna, Austria
| | - Giacomo Donati
- Department of Life Sciences and Systems Biology, Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy
| | - Åsa K Björklund
- Department of Life Science, National Bioinformatics Infrastructure Sweden, Science for Life Laboratory, Chalmers University of Technology, 41296 Göteborg, Sweden
| | - Maria Kasper
- Department of Cell and Molecular Biology, Karolinska Institutet, 17177 Stockholm, Sweden.
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