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Zhao H, Fan S, Sun J. Delayed Wound Healing in the Elderly and a New Therapeutic Target: CD271. Curr Stem Cell Res Ther 2024; 19:316-323. [PMID: 37016526 DOI: 10.2174/1574888x18666230403083603] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 11/21/2022] [Accepted: 12/29/2022] [Indexed: 04/06/2023]
Abstract
With the development of society, the global population is showing a trend of aging. It is well known that age is one of the factors affecting wound healing. Aging compromises the normal physiological process of wound healing, such as the change of skin structure, the decrease of growth factors, the deceleration of cell proliferation, and the weakening of migration ability, hence delaying wound healing. At present, research in adult stem cell-related technology and its derived regenerative medicine provides a novel idea for the treatment of senile wounds. Studies have confirmed that CD271 (P75 neurotropism receptor/P75NTR)-positive cells (CD271+ cells) are a kind of stem cells with a stronger ability of proliferation, differentiation, migration and secretion than CD271 negative (CD271- cells). Meanwhile, the total amount and distribution of CD271 positive cells in different ages of skin are also different, which may be related to the delayed wound healing of aging skin. Therefore, this article reviews the relationship between CD271+ cells and senile wounds and discusses a new scheme for the treatment of senile wounds.
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Affiliation(s)
- Hongqing Zhao
- Department of Plastic Surgery, Jinzhou Medical University, Jinzhou, 121001, Liaoning Province, China
- Department of Burns and Plastic Surgery, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, 100048, China
| | - Sirui Fan
- Department of Plastic Surgery, Jinzhou Medical University, Jinzhou, 121001, Liaoning Province, China
| | - Jiachen Sun
- Department of Burns and Plastic Surgery, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, 100048, China
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2
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Lorenzo-Martín LF, Bustelo XR. The Rho GTPase exchange factor Vav2 promotes extensive age-dependent rewiring of the hair follicle stem cell transcriptome. Front Cell Dev Biol 2023; 11:1252834. [PMID: 37822868 PMCID: PMC10562702 DOI: 10.3389/fcell.2023.1252834] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 09/11/2023] [Indexed: 10/13/2023] Open
Abstract
Both the number and regenerative activity of hair follicle stem cells (HFSCs) are regulated by Vav2, a GDP/GTP exchange factor involved in the catalytic stimulation of the GTPases Rac1 and RhoA. However, whether Vav2 signaling changes in HFSCs over the mouse lifespan is not yet known. Using a mouse knock-in mouse model, we now show that the expression of a catalytically active version of Vav2 (Vav2Onc) promotes an extensive rewiring of the overall transcriptome of HFSCs, the generation of new transcription factor hubs, and the synchronization of many transcriptional programs associated with specific HFSC states and well-defined signaling pathways. Interestingly, this transcriptome rewiring is not fixed in time, as it involves the induction of 15 gene expression waves with diverse distribution patterns during the life of the animals. These expression waves are consistent with the promotion by Vav2Onc of several functional HFSC states that differ from those normally observed in wild-type HFSCs. These results further underscore the role of Vav2 in the regulation of the functional state of HFSCs. They also indicate that, unlike other Vav2-dependent biological processes, the signaling output of this exchange factor is highly contingent on age-dependent intrinsic and/or extrinsic HFSC factors that shape the final biological readouts triggered in this cell type.
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Affiliation(s)
- L. Francisco Lorenzo-Martín
- Molecular Mechanisms of Cancer Program, Centro de Investigación del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC) and University of Salamanca, Salamanca, Spain
- Instituto de Biología Molecular y Celular del Cáncer, CSIC and University of Salamanca, Salamanca, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Salamanca, Spain
| | - Xosé R. Bustelo
- Molecular Mechanisms of Cancer Program, Centro de Investigación del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC) and University of Salamanca, Salamanca, Spain
- Instituto de Biología Molecular y Celular del Cáncer, CSIC and University of Salamanca, Salamanca, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Salamanca, Spain
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3
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Raja E, Clarin MTRDC, Yanagisawa H. Matricellular Proteins in the Homeostasis, Regeneration, and Aging of Skin. Int J Mol Sci 2023; 24:14274. [PMID: 37762584 PMCID: PMC10531864 DOI: 10.3390/ijms241814274] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/13/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023] Open
Abstract
Matricellular proteins are secreted extracellular proteins that bear no primary structural functions but play crucial roles in tissue remodeling during development, homeostasis, and aging. Despite their low expression after birth, matricellular proteins within skin compartments support the structural function of many extracellular matrix proteins, such as collagens. In this review, we summarize the function of matricellular proteins in skin stem cell niches that influence stem cells' fate and self-renewal ability. In the epidermal stem cell niche, fibulin 7 promotes epidermal stem cells' heterogeneity and fitness into old age, and the transforming growth factor-β-induced protein ig-h3 (TGFBI)-enhances epidermal stem cell growth and wound healing. In the hair follicle stem cell niche, matricellular proteins such as periostin, tenascin C, SPARC, fibulin 1, CCN2, and R-Spondin 2 and 3 modulate stem cell activity during the hair cycle and may stabilize arrector pili muscle attachment to the hair follicle during piloerections (goosebumps). In skin wound healing, matricellular proteins are upregulated, and their functions have been examined in various gain-and-loss-of-function studies. However, much remains unknown concerning whether these proteins modulate skin stem cell behavior, plasticity, or cell-cell communications during wound healing and aging, leaving a new avenue for future studies.
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Affiliation(s)
- Erna Raja
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Tsukuba 305-8577, Japan; (E.R.); (M.T.R.D.C.C.)
| | - Maria Thea Rane Dela Cruz Clarin
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Tsukuba 305-8577, Japan; (E.R.); (M.T.R.D.C.C.)
- Ph.D. Program in Humanics, School of Integrative and Global Majors (SIGMA), University of Tsukuba, Tsukuba 305-8577, Japan
| | - Hiromi Yanagisawa
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Tsukuba 305-8577, Japan; (E.R.); (M.T.R.D.C.C.)
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4
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Tang Y, Jia Z, Li X, Zhao X, Zhang S, Luo L, Xia L, Fang Z, Zhang Y, Chen M. Mechanism of wound repair in diabetic rats using nanosilver-free alginate dressing. J Wound Care 2023; 32:cli-clx. [PMID: 37561702 DOI: 10.12968/jowc.2023.32.sup8.cli] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
OBJECTIVE Nanosilver-alginate dressing can effectively promote the healing of diabetic wounds in rats. However, due to the potential toxicity of nanosilver, its widespread application in hard-to-heal wound healing is limited. In the present study, the role and potential mechanism of nanosilver-free alginate gel (NSFAG) in the healing process of diabetic wounds were explored. METHOD A diabetic rat skin wound model was established, and wounds were treated with saline (NC group), nanosilver gel (NSG group) or nanosilver-free alginate gel (NSFAG group) for seven consecutive days. RESULTS NSFAG significantly promoted wound healing and increased the content of protein and hydroxyproline in granulation tissues, and was superior to NSG (p<0.05). Immunohistochemical analyses revealed that the skin wound tissue structure of the NSFAG group was intact, and the number of skin appendages in the dermis layer was significantly higher compared with the NC group and the NSG group (p<0.05). Western blot analysis found that the protein expression of the epidermal stem cell marker molecules CK19 and CK14 as well the proliferation marker of keratinocytes Ki67 in the NSFAG group was significantly higher compared with the NC group or NSG group (p<0.05). Additionally, the proliferation marker of keratinocytes Ki67 in the NSFAG group was significantly higher compared with the NC or NSG group (p<0.05). Immunofluorescence staining analyses indicated that the CK19- and CK14-positive cells were mainly distributed around the epidermis and the newly formed appendages in the NSFAG group, and this result was not observed in the NC or NSG groups. CONCLUSION The present findings demonstrate that NSFAG can effectively accelerate wound healing in diabetic rats by promoting epidermal stem cell proliferation and differentiation into skin cells, as well as formation of granulation tissue, suggesting that it can be a potential dressing for diabetic wounds.
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Affiliation(s)
- Ying Tang
- Department of Endocrinology, First Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
| | - Zeguo Jia
- Department of Endocrinology, First Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
| | - Xueting Li
- Department of Endocrinology, First Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
| | - Xiaotong Zhao
- Department of Endocrinology, First Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
| | - Shiqi Zhang
- Department of Endocrinology, First Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
| | - Li Luo
- Department of Endocrinology, First Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
| | - Li Xia
- Department of Endocrinology, First Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
| | - Zhaohui Fang
- Institute of Traditional Chinese Medicine Diabetes Prevention, Anhui Academy of Traditional Chinese Medicine, People's Republic of China
| | - Yuanzhi Zhang
- Hefei Institute of Physical Science, Chinese Academy of Sciences, People's Republic of China
| | - Mingwei Chen
- Department of Endocrinology, First Affiliated Hospital of Anhui Medical University, Hefei 230032, People's Republic of China
- Institute of Traditional Chinese Medicine Diabetes Prevention, Anhui Academy of Traditional Chinese Medicine, People's Republic of China
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Cheng D, Zhu X, Yan S, Shi L, Liu Z, Zhou X, Bi X. New insights into inflammatory memory of epidermal stem cells. Front Immunol 2023; 14:1188559. [PMID: 37325632 PMCID: PMC10264694 DOI: 10.3389/fimmu.2023.1188559] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 05/16/2023] [Indexed: 06/17/2023] Open
Abstract
Inflammatory memory, as one form of innate immune memory, has a wide range of manifestations, and its occurrence is related to cell epigenetic modification or metabolic transformation. When re-encountering similar stimuli, executing cells with inflammatory memory function show enhanced or tolerated inflammatory response. Studies have identified that not only hematopoietic stem cells and fibroblasts have immune memory effects, but also stem cells from various barrier epithelial tissues generate and maintain inflammatory memory. Epidermal stem cells, especially hair follicle stem cells, play an essential role in wound healing, immune-related skin diseases, and skin cancer development. In recent years, it has been found that epidermal stem cells from hair follicle can remember the inflammatory response and implement a more rapid response to subsequent stimuli. This review updates the advances of inflammatory memory and focuses on its mechanisms in epidermal stem cells. We are finally looking forward to further research on inflammatory memory, which will allow for the development of precise strategies to manipulate host responses to infection, injury, and inflammatory skin disease.
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Affiliation(s)
- Dapeng Cheng
- Department of Dermatology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Xiaochen Zhu
- Department of Dermatology, Changhai Hospital, Naval Medical University, Shanghai, China
- Department of Dermatology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Shaochen Yan
- Department of Dermatology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Linli Shi
- Department of Dermatology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Zhi Liu
- Department of Dermatology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Xin Zhou
- Department of Dermatology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Xinling Bi
- Department of Dermatology, Changhai Hospital, Naval Medical University, Shanghai, China
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Chang J, Sun Y, Meng X, Zeng F, Wang X. EGFL7 affects the migration of epidermal stem cells in refractory diabetic wounds by regulating Notch signaling pathway. Regen Med 2023; 18:137-153. [PMID: 36530156 DOI: 10.2217/rme-2022-0123] [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] [Indexed: 12/23/2022] Open
Abstract
Aim: This study aimed to explore the role of EGFL7 in the healing process of refractory diabetic wounds. Methods: Epidermal stem cells (ESCs) were isolated from healthy mice and diabetic mice, identified by immunofluorescence, transfected with EGFL7 overexpression and silencing lentiviral vectors, and treated with Notch pathway inhibitor (DAPT). Results: SiEGFL7 significantly inhibited the proliferation, invasion and migration of ESCs of healthy mice. DAPT prominently inhibited the expressions of Notch1, Notch2, Hes1 and Jag1 in ESCs of healthy mice induced by overexpressed EGFL7. Overexpressed EGFL7 promoted wound healing in diabetic mice with refractory wounds. Conclusion: EGFL7 affects the proliferation and migration of ESCs in refractory diabetic wounds by regulating the Notch signaling pathway.
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Affiliation(s)
- Jinyuan Chang
- Department of Burn and Plastic Surgery, The Second Xiangya Hospital of Central South University, No. 139, Shaoshan South Road, Furong District, Changsha, Hunan, 410011, China
| | - Yang Sun
- Department of Burn and Plastic Surgery, The Second Xiangya Hospital of Central South University, No. 139, Shaoshan South Road, Furong District, Changsha, Hunan, 410011, China
| | - Xianxi Meng
- Department of Burn and Plastic Surgery, The Second Xiangya Hospital of Central South University, No. 139, Shaoshan South Road, Furong District, Changsha, Hunan, 410011, China
| | - Fanglin Zeng
- Department of Burn and Plastic Surgery, The Second Xiangya Hospital of Central South University, No. 139, Shaoshan South Road, Furong District, Changsha, Hunan, 410011, China
| | - Xiancheng Wang
- Department of Burn and Plastic Surgery, The Second Xiangya Hospital of Central South University, No. 139, Shaoshan South Road, Furong District, Changsha, Hunan, 410011, China
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7
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Raja E, Changarathil G, Oinam L, Tsunezumi J, Ngo YX, Ishii R, Sasaki T, Imanaka‐Yoshida K, Yanagisawa H, Sada A. The extracellular matrix fibulin 7 maintains epidermal stem cell heterogeneity during skin aging. EMBO Rep 2022; 23:e55478. [PMID: 36278510 PMCID: PMC9724670 DOI: 10.15252/embr.202255478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 05/24/2022] [Revised: 10/01/2022] [Accepted: 10/06/2022] [Indexed: 12/12/2022] Open
Abstract
Tissue stem cells (SCs) divide infrequently as a protective mechanism against internal and external stresses associated with aging. Here, we demonstrate that slow- and fast-cycling SCs in the mouse skin epidermis undergo distinct aging processes. Two years of lineage tracing reveals that Dlx1+ slow-cycling clones expand into the fast-cycling SC territory, while the number of Slc1a3+ fast-cycling clones gradually declines. Transcriptome analysis further indicate that the molecular properties of each SC population are altered with age. Mice lacking fibulin 7, an extracellular matrix (ECM) protein, show early impairments resembling epidermal SC aging, such as the loss of fast-cycling clones, delayed wound healing, and increased expression of inflammation- and differentiation-related genes. Fibulin 7 interacts with structural ECM and matricellular proteins, and the overexpression of fibulin 7 in primary keratinocytes results in slower proliferation and suppresses differentiation. These results suggest that fibulin 7 plays a crucial role in maintaining tissue resilience and epidermal SC heterogeneity during skin aging.
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Affiliation(s)
- Erna Raja
- International Research Center for Medical Sciences (IRCMS)Kumamoto UniversityKumamotoJapan
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA)University of TsukubaTsukubaJapan
| | - Gopakumar Changarathil
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA)University of TsukubaTsukubaJapan
- Graduate School of Comprehensive Human SciencesUniversity of TsukubaTsukubaJapan
| | - Lalhaba Oinam
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA)University of TsukubaTsukubaJapan
- School of Integrative and Global MajorsUniversity of TsukubaTsukubaJapan
| | - Jun Tsunezumi
- Department of Pharmaceutical SciencesKyushu University of Health and WelfareMiyazakiJapan
| | - Yen Xuan Ngo
- International Research Center for Medical Sciences (IRCMS)Kumamoto UniversityKumamotoJapan
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA)University of TsukubaTsukubaJapan
- School of Integrative and Global MajorsUniversity of TsukubaTsukubaJapan
| | - Ryutaro Ishii
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA)University of TsukubaTsukubaJapan
- Graduate School of Comprehensive Human SciencesUniversity of TsukubaTsukubaJapan
- Faculty of MedicineUniversity of TsukubaTsukubaJapan
| | - Takako Sasaki
- Department of Biochemistry IIOita UniversityOitaJapan
| | - Kyoko Imanaka‐Yoshida
- Department of Pathology and Matrix BiologyMie University Graduate School of MedicineMieJapan
| | - Hiromi Yanagisawa
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA)University of TsukubaTsukubaJapan
- Faculty of MedicineUniversity of TsukubaTsukubaJapan
| | - Aiko Sada
- International Research Center for Medical Sciences (IRCMS)Kumamoto UniversityKumamotoJapan
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA)University of TsukubaTsukubaJapan
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8
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Hu B, Zhao X, Lu Y, Zhu Y, He H. A transient photoactivation of epidermal stem cells by femtosecond laser promotes skin wound healing. J Biophotonics 2022; 15:e202200217. [PMID: 36054075 DOI: 10.1002/jbio.202200217] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 07/29/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
Wound healing is a long-term complex process, in which epidermal stem cells (EPSCs) in epidermis of skin have been found to play an essential role in it. We develop a noninvasive method to activate EPSCs in skin in vivo to promote wound healing, based on a microscopic system to enable a sequential frame-by-frame scanning of a femtosecond laser at 800 nm to the predefined skin region for a single time for 16 seconds. The laser is tightly focused on a submicron spot and localized in the epidermis, and scans point by point to activate EPSCs there. The density and stemness of EPSCs are significantly enhanced for at least 60 hours after the single-time transient photoactivation. We demonstrate this method works in a skin wound mouse model. Our results provide an optical method for in vivo EPSC activation and hold good potential in wound healing.
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Affiliation(s)
- Bijin Hu
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaohui Zhao
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Yiting Lu
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Yujie Zhu
- Department of Dermatology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Hao He
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
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9
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Li J, Luanpitpong S, Kheolamai P. Editorial: Adult stem cells for regenerative medicine: From cell fate to clinical applications. Front Cell Dev Biol 2022; 10:1069665. [PMID: 36393835 PMCID: PMC9660257 DOI: 10.3389/fcell.2022.1069665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 10/17/2022] [Indexed: 11/21/2023] Open
Affiliation(s)
- Jingting Li
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
- Department of Burns, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
- Department of Dermatology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
- Department of Neurosurgery, Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Sudjit Luanpitpong
- Siriraj Center of Excellence for Stem Cell Research, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Pakpoom Kheolamai
- Center of Excellence in Stem Cell Research and Innovation, Faculty of Medicine, Thammasat University, Bangkok, Thailand
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10
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Lotti R, Palazzo E, Quadri M, Dumas M, Schnebert S, Biondini D, Bianchini MA, Nizard C, Pincelli C, Marconi A. Isolation of an "Early" Transit Amplifying Keratinocyte Population in Human Epidermis: A Role for the Low Affinity Neurotrophin Receptor CD271. Stem Cells 2022; 40:1149-1161. [PMID: 36037263 PMCID: PMC9806768 DOI: 10.1093/stmcls/sxac060] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 08/16/2022] [Indexed: 01/12/2023]
Abstract
In the interfollicular epidermis (IFE), stem cells (KSC) generate transit amplifying (TA) cells that, after symmetric divisions, produce differentiating daughters. Here, we isolated and characterized the highly proliferative interfollicular epidermal basal cell population "early" TA (ETA) cells, based on their capacity to adhere to type IV collagen. Proliferation and colony-forming efficiency in ETA cells are lower than in KSC but higher than in "late" TA (LTA). Stemness, proliferation, and differentiation markers confirmed that ETA cells display a unique phenotype. Skin reconstructs derived from ETA cells present different features (epidermal thickness, Ki67, and Survivin expression), as compared to skin equivalents generated from either KSC or LTA cells. The low-affinity neurotrophin receptor CD271, which regulates the KSC to TA cell transition in the human epidermis through an on/off switch control mechanism, is predominantly expressed in ETA cells. Skin equivalents generated from siRNA CD271 ETA cells display a more proliferative and less differentiated phenotype, as compared to mock-derived reconstructs. Consistently, CD271 overexpression in LTA cells generates a more proliferative skin equivalent than mock LTA cells. Finally, the CD271 level declines with cellular senescence, while it induces a delay in p16INK4 expression. We conclude that ETA cells represent the first KSC progenitor with exclusive features. CD271 identifies and modulates ETA cells, thus participating in the early differentiation and regenerative capacity of the human epidermis.
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Affiliation(s)
- Roberta Lotti
- DermoLab, Department of Surgical, Medical, Dental and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Elisabetta Palazzo
- DermoLab, Department of Surgical, Medical, Dental and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Marika Quadri
- DermoLab, Department of Surgical, Medical, Dental and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Marc Dumas
- LVMH Recherche, Life Sciences Department, Saint Jean de Braye, France
| | | | - Diego Biondini
- Pediatric Surgery Unit, Department of Pediatric Surgery, University of Modena and Reggio Emilia, Modena, Italy
| | - Maria Anastasia Bianchini
- Pediatric Surgery Unit, Department of Pediatric Surgery, University of Modena and Reggio Emilia, Modena, Italy
| | - Carine Nizard
- LVMH Recherche, Life Sciences Department, Saint Jean de Braye, France
| | - Carlo Pincelli
- DermoLab, Department of Surgical, Medical, Dental and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Alessandra Marconi
- Corresponding author: Alessandra Marconi, MSc in Biology, Specialist in Clinical Pathology, DermoLab, Department of Surgical, Medical, Dental and Morphological Sciences, University of Modena and Reggio Emilia, Via Del Pozzo 71, 41124 Modena, Italy. Tel: +39 059 4222812; Fax: +39 059 4224271;
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Calabrese EJ, Calabrese V. Hormesis and Epidermal Stem Cells. Dose Response 2022; 20:15593258221119911. [PMID: 36158736 PMCID: PMC9500281 DOI: 10.1177/15593258221119911] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
This paper provides an assessment of hormetic dose responses in epidermal stem cells (EpSCs) in animal models and humans, with emphasis on cell proliferation and differentiation and application to wound healing and aging processes. Hormetic dose responses were induced by several agents, including dietary supplements (eg, luteolin, quercetin), pharmaceuticals (eg, nitric oxide), endogenous agents (eg, growth/differentiation factor 5), and via diverse chemical means to sustain steaminess features to retard aging and disease onset. While hormetic dose responses have been extensively reported in a broad spectrum of stem cells, this area has only been explored to a limited extent in EpSCs, principally within the past 5 years. Nonetheless, these findings provide the first integrated assessment of hormesis and EpSC biology within the context of enhancing key functions such as cell proliferation and differentiation and resilience to inflammatory stresses. This paper assesses putative mechanisms of hormetic responses in EpSCs and potential therapeutic applications to prevent dermatological injury and disease.
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Affiliation(s)
- Edward J Calabrese
- School of Public Health and Health Sciences, Environmental Health Sciences, University of Massachusetts, Amherst, MA, USA
| | - Vittorio Calabrese
- Department of Biomedical and Biotechnological Sciences, School of Medicine University of Catania, Catania, Italy
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12
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Li B, Tang H, Bian X, Ma K, Chang J, Fu X, Zhang C. Calcium silicate accelerates cutaneous wound healing with enhanced re-epithelialization through EGF/EGFR/ERK-mediated promotion of epidermal stem cell functions. Burns Trauma 2021; 9:tkab029. [PMID: 34604395 PMCID: PMC8484206 DOI: 10.1093/burnst/tkab029] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/23/2020] [Accepted: 06/16/2021] [Indexed: 01/08/2023]
Abstract
BACKGROUND Human epidermal stem cells (hESCs) play an important role in re-epithelialization and thereby in facilitating wound healing, while an effective way to activate hESCs remains to be explored. Calcium silicate (CS) is a form of bioceramic that can alter cell behavior and promote tissue regeneration. Here, we have observed the effect of CS on hESCs and investigated its possible mechanism. METHODS Using a mouse full-thickness skin excision model, we explored the therapeutic effect of CS on wound healing and re-epithelialization. In vitro, hESCs were cultured with diluted CS ion extracts (CSIEs), and the proliferation, migration ability and stemness of hESCs were evaluated. The effects of CS on the epidermal growth factor (EGF), epidermal growth factor receptor (EGFR) and extracellular signal-related kinase (ERK) signaling pathway were also explored. RESULTS In vivo, CS accelerated wound healing and re-epithelialization. Immunohistochemistry demonstrated that CS upregulated cytokeratin 19 and integrin β1 expression, indicating that CS improved hESCs stemness. In vitro studies confirmed that CS improved the biological function of hESCs. And the possible mechanism could be due to the activation of the EGF/EGFR/ERK signaling pathway. CONCLUSION CS can promote re-epithelialization and improve the biological functions of hESCs via activating the EGF/EGFR/ERK signaling pathway.
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Affiliation(s)
- Bingmin Li
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Division and Fourth Medical Center of Chinese PLA General Hospital, 100048, Beijing, China
- Department of Dermatology, Fourth Medical Center of Chinese PLA General Hospital, 100048, Beijing, China
| | - Haowen Tang
- Faculty of Hepato-Biliary-Pancreatic Surgery, Chinese PLA General Hospital, 100853, Beijing, China
| | - Xiaowei Bian
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Division and Fourth Medical Center of Chinese PLA General Hospital, 100048, Beijing, China
| | - Kui Ma
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Division and Fourth Medical Center of Chinese PLA General Hospital, 100048, Beijing, China
| | - Jiang Chang
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, 200050, Shanghai, China
| | - Xiaobing Fu
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Division and Fourth Medical Center of Chinese PLA General Hospital, 100048, Beijing, China
- Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, 100048, Beijing, China
| | - Cuiping Zhang
- Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Division and Fourth Medical Center of Chinese PLA General Hospital, 100048, Beijing, China
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13
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Zhao M, Wang C, Xie J, Ji C, Gu Z. Eco-Friendly and Scalable Synthesis of Fullerenols with High Free Radical Scavenging Ability for Skin Radioprotection. Small 2021; 17:e2102035. [PMID: 34337863 DOI: 10.1002/smll.202102035] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/26/2021] [Indexed: 06/13/2023]
Abstract
Radiation dermatitis is a common but torturous side effect during radiotherapy, which greatly decreases the life quality of patients and potentially results in detrimental cessation of tumor treatment. Fullerenol, known as "free radical sponge," is a great choice for skin radioprotection because of its broad-spectrum free radical scavenging performance, good chemical stability, and biosafety. In this work, a facile scalable and eco-friendly synthetic method of fullerenols by catalyst assistant mechanical chemistry strategy is provided. As no organic solvent or high concentration of acid and alkali is introduced to this synthetic system, large-scale (>20 g) production of fullerenols with high yield (>95%) is obtained and no complicated purification is required. Then, the skin radioprotective performance of fullerenols is systematically explored for the first time. In vitro results indicate that fullerenols significantly block the reactive oxygen species-induced damage and enhance the viability of irradiated human keratinocyte cells. In vivo experiments suggest that medical sodium hyaluronate hydrogels loaded with fullerenols are suitable for skin administration and powerfully mitigate radiodermatitis via effectively protecting epidermal stem cells. The work not only provides an efficient gram-scale and eco-friendly synthetic method of fullerenols, but also promotes the development of fullerenols as potential skin radioprotectors.
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Affiliation(s)
- Maoru Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chengyan Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiani Xie
- College of Pharmacy and Biological Engineering, Chengdu University, Chengdu, 610106, China
| | - Chao Ji
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhanjun Gu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
- GBA Research Innovation Institute for Nanotechnology, Guangdong, 510700, China
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14
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Rico-Leo EM, Lorenzo-Martín LF, Román ÁC, Bustelo XR, Merino JM, Fernández-Salguero PM. Aryl hydrocarbon receptor controls skin homeostasis, regeneration, and hair follicle cycling by adjusting epidermal stem cell function. Stem Cells 2021; 39:1733-1750. [PMID: 34423894 DOI: 10.1002/stem.3443] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 03/02/2021] [Accepted: 07/28/2021] [Indexed: 12/20/2022]
Abstract
Skin integrity requires constant maintenance of a quiescent, yet responsive, population of stem cells. While interfollicular epidermal progenitors control normal homeostasis, hair follicle stem cells residing within the bulge provide regenerative potential during hair cycle and in response to wounding. The aryl hydrocarbon receptor (AhR) modulates cell plasticity and differentiation and its overactivation results in severe skin lesions in humans. However, its physiological role in skin homeostasis and hair growth is unknown. Reconstitution assays grafting primary keratinocytes and dermal fibroblasts into nude mice and 3-D epidermal equivalents revealed a positive role for AhR in skin regeneration, epidermal differentiation, and stem cell maintenance. Furthermore, lack of receptor expression in AhR-/- mice delayed morphogenesis and impaired hair regrowth with a phenotype closely correlating with a reduction in suprabasal bulge stem cells (α6low CD34+ ). Moreover, RNA-microarray and RT-qPCR analyses of fluorescence-activated cell sorting (FACS)-isolated bulge stem cells revealed that AhR depletion impaired transcriptional signatures typical of both epidermal progenitors and bulge stem cells but upregulated differentiation markers likely compromising their undifferentiated phenotype. Altogether, our findings support that AhR controls skin regeneration and homeostasis by ensuring epidermal stem cell identity and highlights this receptor as potential target for the treatment of cutaneous pathologies.
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Affiliation(s)
- Eva María Rico-Leo
- Departamento de Bioquímica y Biología Molecular y Genética, Facultad de Ciencias, Universidad de Extremadura, Badajoz, Spain.,Instituto Universitario de Investigación Biosanitaria de Extremadura (INUBE), Badajoz, Spain
| | | | - Ángel Carlos Román
- Departamento de Bioquímica y Biología Molecular y Genética, Facultad de Ciencias, Universidad de Extremadura, Badajoz, Spain
| | - Xosé Ramón Bustelo
- Centro de Investigación del Cáncer and CIBERONC, CSIC-Universidad de Salamanca, Salamanca, Spain
| | - Jaime María Merino
- Departamento de Bioquímica y Biología Molecular y Genética, Facultad de Ciencias, Universidad de Extremadura, Badajoz, Spain.,Instituto Universitario de Investigación Biosanitaria de Extremadura (INUBE), Badajoz, Spain
| | - Pedro María Fernández-Salguero
- Departamento de Bioquímica y Biología Molecular y Genética, Facultad de Ciencias, Universidad de Extremadura, Badajoz, Spain.,Instituto Universitario de Investigación Biosanitaria de Extremadura (INUBE), Badajoz, Spain
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15
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Fujimura Y, Watanabe M, Ohno K, Kobayashi Y, Takashima S, Nakamura H, Kosumi H, Wang Y, Mai Y, Lauria A, Proserpio V, Ujiie H, Iwata H, Nishie W, Nagayama M, Oliviero S, Donati G, Shimizu H, Natsuga K. Hair follicle stem cell progeny heal blisters while pausing skin development. EMBO Rep 2021; 22:e50882. [PMID: 34085753 DOI: 10.15252/embr.202050882] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 04/30/2021] [Accepted: 05/05/2021] [Indexed: 12/13/2022] Open
Abstract
Injury in adult tissue generally reactivates developmental programs to foster regeneration, but it is not known whether this paradigm applies to growing tissue. Here, by employing blisters, we show that epidermal wounds heal at the expense of skin development. The regenerated epidermis suppresses the expression of tissue morphogenesis genes accompanied by delayed hair follicle (HF) growth. Lineage tracing experiments, cell proliferation dynamics, and mathematical modeling reveal that the progeny of HF junctional zone stem cells, which undergo a morphological transformation, repair the blisters while not promoting HF development. In contrast, the contribution of interfollicular stem cell progeny to blister healing is small. These findings demonstrate that HF development can be sacrificed for the sake of epidermal wound regeneration. Our study elucidates the key cellular mechanism of wound healing in skin blistering diseases.
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Affiliation(s)
- Yu Fujimura
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Mika Watanabe
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan.,Department of Life Sciences and Systems Biology, Molecular Biotechnology Centre, University of Turin, Turin, Italy
| | - Kota Ohno
- Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan
| | - Yasuaki Kobayashi
- Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan
| | - Shota Takashima
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Hideki Nakamura
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Hideyuki Kosumi
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Yunan Wang
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Yosuke Mai
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Andrea Lauria
- Department of Life Sciences and Systems Biology, Molecular Biotechnology Centre, University of Turin, Turin, Italy.,Italian Institute for Genomic Medicine, Candiolo, Italy
| | - Valentina Proserpio
- Italian Institute for Genomic Medicine, Candiolo, Italy.,Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy
| | - Hideyuki Ujiie
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Hiroaki Iwata
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Wataru Nishie
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Masaharu Nagayama
- Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan
| | - Salvatore Oliviero
- Department of Life Sciences and Systems Biology, Molecular Biotechnology Centre, University of Turin, Turin, Italy.,Italian Institute for Genomic Medicine, Candiolo, Italy
| | - Giacomo Donati
- Department of Life Sciences and Systems Biology, Molecular Biotechnology Centre, University of Turin, Turin, Italy
| | - Hiroshi Shimizu
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Ken Natsuga
- Department of Dermatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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16
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Lichtenberger BM, Kasper M. Cellular heterogeneity and microenvironmental control of skin cancer. J Intern Med 2021; 289:614-628. [PMID: 32976658 DOI: 10.1111/joim.13177] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/24/2020] [Accepted: 08/26/2020] [Indexed: 12/14/2022]
Abstract
Healthy tissues harbour a surprisingly high number of cells that carry well-known cancer-causing mutations without impacting their physiological function. In recent years, strong evidence accumulated that the immediate environment of mutant cells profoundly impact their prospect of malignant progression. In this review, focusing on the skin, we investigate potential key mechanisms that ensure tissue homeostasis despite the presence of mutant cells, as well as critical factors that may nudge the balance from homeostasis to tumour formation. Functional in vivo studies and single-cell transcriptome analyses have revealed a tremendous cellular heterogeneity and plasticity within epidermal (stem) cells and their respective niches, revealing for example wild-type epithelial cells, fibroblasts or immune-cell subsets as critical in preventing cancer formation and malignant progression. It's the same cells, however, that can drive carcinogenesis. Therefore, understanding the abundance and molecular variation of cell types in health and disease, and how they interact and modulate the local signalling environment will thus be key for new therapeutic avenues in our battle against cancer.
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Affiliation(s)
- B M Lichtenberger
- From the, Skin and Endothelium Research Division, Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - M Kasper
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
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17
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Wagner RN, Piñón Hofbauer J, Wally V, Kofler B, Schmuth M, De Rosa L, De Luca M, Bauer JW. Epigenetic and metabolic regulation of epidermal homeostasis. Exp Dermatol 2021; 30:1009-1022. [PMID: 33600038 PMCID: PMC8359218 DOI: 10.1111/exd.14305] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 02/11/2021] [Accepted: 02/14/2021] [Indexed: 02/06/2023]
Abstract
Continuous exposure of the skin to environmental, mechanical and chemical stress necessitates constant self‐renewal of the epidermis to maintain its barrier function. This self‐renewal ability is attributed to epidermal stem cells (EPSCs), which are long‐lived, multipotent cells located in the basal layer of the epidermis. Epidermal homeostasis – coordinated proliferation and differentiation of EPSCs – relies on fine‐tuned adaptations in gene expression which in turn are tightly associated with specific epigenetic signatures and metabolic requirements. In this review, we will briefly summarize basic concepts of EPSC biology and epigenetic regulation with relevance to epidermal homeostasis. We will highlight the intricate interplay between mitochondrial energy metabolism and epigenetic events – including miRNA‐mediated mechanisms – and discuss how the loss of epigenetic regulation and epidermal homeostasis manifests in skin disease. Discussion of inherited epidermolysis bullosa (EB) and disorders of cornification will focus on evidence for epigenetic deregulation and failure in epidermal homeostasis, including stem cell exhaustion and signs of premature ageing. We reason that the epigenetic and metabolic component of epidermal homeostasis is significant and warrants close attention. Charting epigenetic and metabolic complexities also represents an important step in the development of future systemic interventions aimed at restoring epidermal homeostasis and ameliorating disease burden in severe skin conditions.
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Affiliation(s)
- Roland N Wagner
- Department of Dermatology and Allergology, University Hospital of the Paracelsus Medical University, Salzburg, Austria
| | - Josefina Piñón Hofbauer
- EB House Austria, Research Program for Molecular Therapy of Genodermatoses, Department of Dermatology and Allergology, University Hospital of the Paracelsus Medical University, Salzburg, Austria
| | - Verena Wally
- EB House Austria, Research Program for Molecular Therapy of Genodermatoses, Department of Dermatology and Allergology, University Hospital of the Paracelsus Medical University, Salzburg, Austria
| | - Barbara Kofler
- Research Program for Receptor Biochemistry and Tumor Metabolism, Department of Pediatrics, University Hospital of the Paracelsus Medical University, Salzburg, Austria
| | - Matthias Schmuth
- Department of Dermatology, Medical University Innsbruck, Innsbruck, Austria
| | - Laura De Rosa
- Holostem Terapie Avanzate S.r.l., Center for Regenerative Medicine "Stefano Ferrari", Modena, Italy
| | - Michele De Luca
- Center for Regenerative Medicine "Stefano Ferrari", Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Johann W Bauer
- Department of Dermatology and Allergology, University Hospital of the Paracelsus Medical University, Salzburg, Austria
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18
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Abstract
Significance: Hair follicles are complex miniorgans that reside in the dermal layer of the skin. When the skin is wounded, epidermal stem cells in the hair follicle activate and start migrating into the wound site, differentiating into epidermal cells. and contributing to the reepithelialization of the wound. The hair follicles represent the deepest epidermal elements in the skin, which are extremely beneficial in partial-thickness burns and abrasions where the skin can regenerate from the hair follicles. Recent Advances: Advanced animal models have demonstrated that the contribution of epidermal stem cells in the hair follicle bulge and isthmus regions is important for wound healing. In addition, several clinical studies have shown successful harvesting and transplantation of hair follicles as a treatment modality to accelerate wound healing. Critical Issues: Deep and large wounds require hospitalization and, without exception, surgical treatment. Harvesting and direct transplantation of hair follicles could provide a great source of autologous epidermal stem cells for wound healing. The procedure can be done in an outpatient setting, quickly and without creating a large donor site wound. Future Directions: Transplantation of hair follicles in a combination with novel biomaterials could provide advantageous treatment possibilities for both chronic wounds and burns. There is a substantial amount of molecular signaling data available on the role of hair follicles during wound repair, but almost all the data are derived from rodent models, and thus, more information from large animals and most importantly from humans would be beneficial and help to advance this promising treatment further.
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Affiliation(s)
- Kristo Nuutila
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
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19
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Abstract
Cell competition (CC) is a feature that allows tumor cells to outcompete and eliminate adjacent cells that are deemed less fit. Studies of CC, first described in Drosophila melanogaster, reveal a diversity of underlying mechanisms. In this review, we will discuss three recent studies that expand our understanding of the molecular features governing CC. In particular, we will focus on a molecular fitness fingerprint, oncogenic pathways, and the importance of cell junction stability. A fitness fingerprint, mediated by flower (hFWE) protein isoforms, dictates that cells expressing the flower-win isoforms will outcompete adjacent flower-loss-expressing cells. The impact of the flower protein isoforms is seen in cancer progression and may have diagnostic potential. The yes-associated protein (YAP) and TAZ transcription factors, central mediators of the oncogenic Hippo pathway, elevate peritumoral fitness thereby protecting against tumor progression and provide a suppressive barrier. Similarly, COL17A1 is a key component in hemidesmosome stability, and its expression in epidermal stem cells contributes to fitness competition and aging characteristics. The contributions of these pathways to disease development and progression will help define how CC is hijacked to favor cancer growth. Understanding these features will also help frame the diagnostic and therapeutic possibilities that may place CC in the crosshairs of cancer therapeutics.
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Affiliation(s)
- Adam James Ferrari
- Penn Ovarian Cancer Research Center, Department of Obstetrics and Gynecology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA;
- Graduate Program in Cell and Molecular Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
- Department of Cancer Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Ronny Drapkin
- Penn Ovarian Cancer Research Center, Department of Obstetrics and Gynecology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA;
- Graduate Program in Cell and Molecular Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
- Basser Center for BRCA, Abramson Cancer Center, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA
| | - Rajan Gogna
- Champalimaud Centre for the Unknown, 1400-038 Lisbon, Portugal
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20
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Li X, Wang F, Lan Y, Bian R, Wang Y, Zhang X, Guo Y, Xiao L, Ni W, Zhao X, Luo G, Zhan R. GDF-5 induces epidermal stem cell migration via RhoA-MMP9 signalling. J Cell Mol Med 2020; 25:1939-1948. [PMID: 33369147 PMCID: PMC7882973 DOI: 10.1111/jcmm.15925] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 08/06/2020] [Accepted: 09/03/2020] [Indexed: 12/18/2022] Open
Abstract
The migration of epidermal stem cells (EpSCs) is critical for wound re-epithelization and wound healing. Recently, growth/differentiation factor-5 (GDF-5) was discovered to have multiple biological effects on wound healing; however, its role in EpSCs remains unclear. In this work, recombinant mouse GDF-5 (rmGDF-5) was found via live imaging in vitro to facilitate the migration of mouse EpSCs in a wound-scratch model. Western blot and real-time PCR assays demonstrated that the expression levels of RhoA and matrix metalloproteinase-9 (MMP9) were correlated with rmGDF-5 concentration. Furthermore, we found that rmGDF-5 stimulated mouse EpSC migration in vitro by regulating MMP9 expression at the mRNA and protein levels through the RhoA signalling pathway. Moreover, in a deep partial-thickness scald mouse model in vivo, GDF-5 was confirmed to promote EpSC migration and MMP9 expression via RhoA, as evidenced by the tracking of cells labelled with 5-bromo-2-deoxyuridine (BrdU). The current study showed that rmGDF-5 can promote mouse EpSC migration in vitro and in vivo and that GDF-5 can trigger the migration of EpSCs via RhoA-MMP9 signalling.
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Affiliation(s)
- Xue Li
- Institute of Burn Research, State Key Laboratory of Trauma, Burn and Combined Injury, Key Laboratory of Proteomics of Chongqing, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Fan Wang
- Department of Plastic and Reconstructive Surgery, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Yuanxin Lan
- Institute of Burn Research, State Key Laboratory of Trauma, Burn and Combined Injury, Key Laboratory of Proteomics of Chongqing, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Ruyu Bian
- Institute of Burn Research, State Key Laboratory of Trauma, Burn and Combined Injury, Key Laboratory of Proteomics of Chongqing, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Ying Wang
- Institute of Burn Research, State Key Laboratory of Trauma, Burn and Combined Injury, Key Laboratory of Proteomics of Chongqing, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Xiaorong Zhang
- Institute of Burn Research, State Key Laboratory of Trauma, Burn and Combined Injury, Key Laboratory of Proteomics of Chongqing, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Yicheng Guo
- Institute of Burn Research, State Key Laboratory of Trauma, Burn and Combined Injury, Key Laboratory of Proteomics of Chongqing, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Ling Xiao
- Department of Burn and Plastic Surgery, Chenzhou First People's Hospital Affiliated to Nanhua University, Chenzhou, China
| | - Wenqiang Ni
- Department of Burn and Plastic Surgery, Chenzhou First People's Hospital Affiliated to Nanhua University, Chenzhou, China
| | - Xiaohong Zhao
- Institute of Burn Research, State Key Laboratory of Trauma, Burn and Combined Injury, Key Laboratory of Proteomics of Chongqing, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Gaoxing Luo
- Institute of Burn Research, State Key Laboratory of Trauma, Burn and Combined Injury, Key Laboratory of Proteomics of Chongqing, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
| | - Rixing Zhan
- Institute of Burn Research, State Key Laboratory of Trauma, Burn and Combined Injury, Key Laboratory of Proteomics of Chongqing, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, China
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21
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Sun C, Li Y, Li X, Sun J. Agonism of Gpr40 Protects the Capacities of Epidermal Stem Cells (ESCs) Against Ultraviolet-B (UV-B). Drug Des Devel Ther 2020; 14:5143-5153. [PMID: 33262575 PMCID: PMC7699447 DOI: 10.2147/dddt.s252060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 07/01/2020] [Indexed: 01/09/2023]
Abstract
Introduction Skin damage due to overexposure to ultraviolet B (UV-B) radiation can lead to the development of cancers and reduce the skin's functionality as a vital protective barrier. Epidermal stem cells (ESCs) are pluripotent cells responsible for skin regeneration and healing. Upon exposure to UV-B radiation, ESCs produce excess amounts of reactive oxygen species (ROS) and inflammatory cytokines. However, the functional protection of ESCs is not fully explored. G-protein coupled G protein-coupled receptor 40 (Gpr40) is a free fatty acid receptor that is emerging as a potential treatment target for various diseases. Gpr40 has been found to be expressed in various cell types. Methods ESCs were exposed to UV-B at the intensities of 25, 50, and 100 mJ/cm2 for 24 h using TL 20 W/12 RS UV lamps. ESCs were treated with UV-B at 50 mJ/cm2 in the presence or absence of 25 or 50 µM of the Gpr40 agonist GW9508 for 24 h. The gene expression of the Wnt1 pathway and proinflammatory cytokines were evaluated. To antagonize Gpr40 expression, ESCs were treated with 10 µM GW1100. Results Our findings demonstrate that Gpr40 agonism can reduce the production of ROS as well as the expression of interleukins 1β and 8, two key proinflammatory cytokines. We demonstrate that agonism of Gpr40 can rescue the reduction in integrin β1 and Krt19 induced by UV-B exposure, thereby improving the capacities of ESCs to resist UV-B damage. Moreover, we show that the effects of Gpr40 agonism observed in our experiments are mediated through the Wnt/β-catenin canonical signaling pathway, as evidenced by the expression of Wnt1 and cyclin D1. Conclusion Our findings present evidence of the role of Gpr40 agonism in mediating the protective capacities of ESCs against insult from UV-B radiation.
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Affiliation(s)
- Chengkuan Sun
- Department of Hand Surgery, The Third Hospital of Jilin University, Changchun, Jilin 130033, People's Republic of China
| | - Yulin Li
- Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun, Jilin 130033, People's Republic of China
| | - Xianglan Li
- Departmentof Dermatology, The Third Hospital of Jilin University, Changchun, Jilin 130033, People's Republic of China
| | - Jing Sun
- Departmentof Dermatology, The Third Hospital of Jilin University, Changchun, Jilin 130033, People's Republic of China
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22
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Oinam L, Changarathil G, Raja E, Ngo YX, Tateno H, Sada A, Yanagisawa H. Glycome profiling by lectin microarray reveals dynamic glycan alterations during epidermal stem cell aging. Aging Cell 2020; 19:e13190. [PMID: 32681764 PMCID: PMC7431822 DOI: 10.1111/acel.13190] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 05/01/2020] [Accepted: 06/06/2020] [Indexed: 12/02/2022] Open
Abstract
Aging in the epidermis is marked by a gradual decline in barrier function, impaired wound healing, hair loss, and an increased risk of cancer. This could be due to age‐related changes in the properties of epidermal stem cells and defective interactions with their microenvironment. Currently, no biochemical tools are available to detect and evaluate the aging of epidermal stem cells. The cellular glycosylation is involved in cell–cell communications and cell–matrix adhesions in various physiological and pathological conditions. Here, we explored the changes of glycans in epidermal stem cells as a potential biomarker of aging. Using lectin microarray, we performed a comprehensive glycan profiling of freshly isolated epidermal stem cells from young and old mouse skin. Epidermal stem cells exhibited a significant difference in glycan profiles between young and old mice. In particular, the binding of a mannose‐binder rHeltuba was decreased in old epidermal stem cells, whereas that of an α2‐3Sia‐binder rGal8N increased. These glycan changes were accompanied by upregulation of sialyltransferase, St3gal2 and St6gal1 and mannosidase Man1a genes in old epidermal stem cells. The modification of cell surface glycans by overexpressing these glycogenes leads to a defect in the regenerative ability of epidermal stem cells in culture. Hence, our study suggests the age‐related global alterations in cellular glycosylation patterns and its potential contribution to the stem cell function. These glycan modifications detected by lectins may serve as molecular markers for aging, and further functional studies will lead us to a better understanding of the process of skin aging.
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Affiliation(s)
- Lalhaba Oinam
- Life Science Center for Survival Dynamics Tsukuba Advanced Research Alliance (TARA) University of Tsukuba Tsukuba Japan
- Ph.D. Program in Human Biology School of Integrative and Global Majors University of Tsukuba Tsukuba Japan
| | - Gopakumar Changarathil
- Life Science Center for Survival Dynamics Tsukuba Advanced Research Alliance (TARA) University of Tsukuba Tsukuba Japan
- Graduate School of Comprehensive Human Sciences University of Tsukuba Tsukuba Japan
| | - Erna Raja
- Life Science Center for Survival Dynamics Tsukuba Advanced Research Alliance (TARA) University of Tsukuba Tsukuba Japan
- International Research Center for Medical Sciences (IRCMS) Kumamoto University Kumamoto Japan
| | - Yen Xuan Ngo
- Life Science Center for Survival Dynamics Tsukuba Advanced Research Alliance (TARA) University of Tsukuba Tsukuba Japan
- Ph.D. Program in Human Biology School of Integrative and Global Majors University of Tsukuba Tsukuba Japan
| | - Hiroaki Tateno
- Life Science Center for Survival Dynamics Tsukuba Advanced Research Alliance (TARA) University of Tsukuba Tsukuba Japan
- Cellular and Molecular Biotechnology Research Institute National Institute of Advanced Industrial Science and Technology Tsukuba Japan
| | - Aiko Sada
- Life Science Center for Survival Dynamics Tsukuba Advanced Research Alliance (TARA) University of Tsukuba Tsukuba Japan
- International Research Center for Medical Sciences (IRCMS) Kumamoto University Kumamoto Japan
| | - Hiromi Yanagisawa
- Life Science Center for Survival Dynamics Tsukuba Advanced Research Alliance (TARA) University of Tsukuba Tsukuba Japan
- Faculty of Medicine University of Tsukuba Tsukuba Japan
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23
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Li X, Ye Y, Liu X, Bai L, Zhao P, Bai W, Zhang M. Low-frequency electromagnetic fields promote hair follicles regeneration by injection a mixture of epidermal stem cells and dermal papilla cells. Electromagn Biol Med 2020; 39:251-256. [PMID: 32727226 DOI: 10.1080/15368378.2020.1793165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The bioeffects of low-frequency electromagnetic fields (EMF) on a bio-engineered hair follicle generation had not been fully elucidated. This present study was designed to evaluat the therapeutically effective of low frequency EMF on hair follicles regeneration. In this experiment, epidermal stem cells (ESCs) and dermal papilla (DP) cells were isolated and culture-expanded. Then the mixture containing of ESCs and DP cells was implanted into the epidermal layer or corium layer of nude mice. Those mice were divided at random into the control group and EMF group, 7 days or 14 days later, the skin specimens were harvested to assess for hair regeneration or a bio-engineered skin formation using H&E staining. After injection of the mixture into the epidermal layer of nude mice for 14 days, H&E staining showed that the new hair formed the correct structure comprising hair matrix, hair shaft, and inner root sheath, outer root sheath, and DP. Comparing to the control, the hair follicles erupted at a higher density in the EMF group. When the mixture was implanted into the corium layer for 7 days, comparing with the characteristics of new hair follicles in the control group, H&E staining also showed the mixture induced to form 4 ~ 6 epidermal layers with a higher density of hair follicle like-structures in the bioengineered epithelial layers after EMF exposure. Our results suggested that the injection of a mixture of ESCs and DP cells in combination with EMF exposure facilitated the induction of hair follicle regeneration and a bioengineered skin formation with hair follicle-like structures.
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Affiliation(s)
- Xinping Li
- Department of Physical Medicine and Rehabilitation, Guangdong Geriatric Institute, Guangdong Academy of Medical Sciences & Guangdong Provincial People's Hospital , Guangzhou, China
| | - Yan Ye
- Department of Physical Medicine and Rehabilitation, The Second People' Hospital of Foshan , Foshan, China
| | - Xiaohan Liu
- Department of Physical Medicine and Rehabilitation, The Fifth Affiliated Hospital of Sun Yat-sen University , Zhuhai, China
| | - Liming Bai
- Department of Physical Medicine and Rehabilitation, Guangdong Geriatric Institute, Guangdong Academy of Medical Sciences & Guangdong Provincial People's Hospital , Guangzhou, China
| | - Pin Zhao
- Huayin Laboratory, Southern Medical University , Guangzhou, China
| | - Wenfang Bai
- Department of Physical Medicine and Rehabilitation, Guangdong Geriatric Institute, Guangdong Academy of Medical Sciences & Guangdong Provincial People's Hospital , Guangzhou, China
| | - Mingsheng Zhang
- Department of Physical Medicine and Rehabilitation, Guangdong Geriatric Institute, Guangdong Academy of Medical Sciences & Guangdong Provincial People's Hospital , Guangzhou, China
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24
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Yoshizumi T, Kubo A, Murata H, Shinonaga M, Kanno H. BC-Box Motif in SOCS6 Induces Differentiation of Epidermal Stem Cells into GABAnergic Neurons. Int J Mol Sci 2020; 21:ijms21144947. [PMID: 32668737 PMCID: PMC7403999 DOI: 10.3390/ijms21144947] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/09/2020] [Accepted: 07/11/2020] [Indexed: 12/11/2022] Open
Abstract
The BC-box motif in suppressor of cytokine signaling 6 (SOCS6) promotes the neuronal differentiation of somatic stem cells, including epidermal stem cells. SOCS6 protein belongs to the group of SOCS proteins and inhibits cytokine signaling. Here we showed that epidermal stem cells were induced to differentiate into GABAnergic neurons by the intracellular delivery of a peptide composed of the amino-acid sequences encoded by the BC-box motif in SOCS6 protein. The BC-box motif (SLQYLCRFVI) in SOCS6 corresponded to the binding site of elongin BC. GABAnergic differentiation mediated by the BC-box motif in SOCS6 protein was caused by ubiquitination of JAK2 and inhibition of the JAK2-STAT3 pathway. Furthermore, GABAnergic neuron-like cells generated from epidermal stem cells were transplanted into the brain of a rodent ischemic model. Then, we demonstrated that these transplanted cells were GAD positive and that the cognitive function of the ischemic model rodents with the transplanted cells was improved. This study could contribute to not only elucidating the mechanism of GABAnergic neuronal differentiation but also to neuronal regenerative medicine utilizing GABAnergic neurons.
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Affiliation(s)
- Tetsuya Yoshizumi
- Department of Neurosurgery, International University of Health and Welfare Atami Hospital, Atami 413-0012, Japan; (T.Y.); (M.S.)
| | - Atsuhiko Kubo
- Nerve Care Clinic, Yokosuka 238-0012, Japan;
- Department of Neurosurgery, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan;
| | - Hidetoshi Murata
- Department of Neurosurgery, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan;
| | - Masamichi Shinonaga
- Department of Neurosurgery, International University of Health and Welfare Atami Hospital, Atami 413-0012, Japan; (T.Y.); (M.S.)
| | - Hiroshi Kanno
- Department of Neurosurgery, International University of Health and Welfare Atami Hospital, Atami 413-0012, Japan; (T.Y.); (M.S.)
- Department of Neurosurgery, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan;
- Correspondence: ; Tel.: +81-557-81-9171; Fax: +81-557-83-6632
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25
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Shi Y, Yang R, Tu L, Liu D. Long non‑coding RNA HOTAIR promotes burn wound healing by regulating epidermal stem cells. Mol Med Rep 2020; 22:1811-1820. [PMID: 32582996 PMCID: PMC7411415 DOI: 10.3892/mmr.2020.11268] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 05/27/2020] [Indexed: 12/12/2022] Open
Abstract
Local transplantation of epidermal stem cells (ESCs) exerts a therapeutic effect on burn wounds. However, cell viability can impede their clinical application. HOX antisense intergenic RNA (HOTAIR) is involved in regulating adult tissue stem cells, as well as in developmental patterning and pluripotency. However, little is known about its role in regulating ESCs. The present study was performed to investigate the effects of HOTAIR in the modulation of ESCs and wound repair. Firstly, reverse transcription-quantitative PCR was used to detect the relative expression of HOTAIR during burn wound healing in mice to determine whether HOTAIR is associated with wound healing. Subsequently, ESCs derived from mouse skin were transfected with a lentiviral vector to overexpress or knockdown HOTAIR. The effects of HOTAIR on cell proliferation and differentiation were measured by 5-bromodeoxyuridine and MTT assays, and by assessing NANOG mRNA expression. Lastly, mice with burns were administered a subcutaneous injection of HOTAIR-overexpressing ESCs. Images were captured and histological analyses were performed to evaluate wound healing. The results revealed that the expression of HOTAIR gradually increased and peaked at day 7 post-burn and maintained at relatively high levels until day 14 post-burn during wound healing. Furthermore, overexpression of HOTAIR promoted ESC proliferation and maintained the stem cell state in vitro. By contrast, suppression of HOTAIR inhibited cell proliferation and cell stemness. It was also identified that HOTIR-overexpressing ESCs accelerated re-epithelialization and facilitated burn wound repair. In conclusion, the present findings confirmed an essential role of HOTAIR in the regulation of ESC proliferation and stemness. Therefore, targeting HOTAIR in ESCs may be a potentially promising therapy for burn wound healing.
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Affiliation(s)
- Yan Shi
- Burns Institute, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Ronghua Yang
- Burns Department, The First People's Hospital of Foshan, Foshan, Guangdong 528000, P.R. China
| | - Longxiang Tu
- Burns Institute, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Dewu Liu
- Burns Institute, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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26
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Rong HT, Liu DW. Identification of differentially expressed miRNAs associated with thermal injury in epidermal stem cells based on RNA-sequencing. Exp Ther Med 2020; 19:2218-2228. [PMID: 32104287 PMCID: PMC7027234 DOI: 10.3892/etm.2020.8448] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 11/06/2019] [Indexed: 12/27/2022] Open
Abstract
Current research indicates that epidermal stem cells (EpSCs) play an important role in promoting wound healing, but the mechanism of action of these cells during wound repair following thermal damage remains unclear. In the present study, the trypsin digestion method was used to isolate human EpSCs and the cells were incubated in a 51.5°C water tank for 35 sec to construct a thermal injury model. The differentially expressed miRNAs were identified using high-throughput sequencing technology, and bioinformatic methods were used to predict their target genes and signaling pathways that may be involved in wound repair. A total of 33 miRNAs including, hsa-miR-1973, hsa-miR-4485-3p, hsa-miR-548-5p, hsa-miR-212-3p and hsa-miR-4461 were upregulated, whereas 21 miRNAs including, hsa-miR-4520-5p, hsa-miR-4661-5p, hsa-miR-191-3p, hsa-miR-129-5p, hsa-miR-147b and hsa-miR-6868-3p were downregulated following thermal injury of the human EpSCs. The bioinformatic analysis indicated that the differentially expressed miRNAs are involved in biological processes such as cell proliferation and differentiation, cell growth apoptosis, cell adhesion and migration. The results showed that there is a differential expression pattern of miRNAs after thermal injury of human EpSCs and these differences are involved in the regulation of the wound healing process. These findings provide new clues for further study of the wound healing mechanism and targeted therapy.
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Affiliation(s)
- Hao-Tian Rong
- Burns Institute, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China.,First Clinical Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - De-Wu Liu
- Burns Institute, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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27
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Cable J, Fuchs E, Weissman I, Jasper H, Glass D, Rando TA, Blau H, Debnath S, Oliva A, Park S, Passegué E, Kim C, Krasnow MA. Adult stem cells and regenerative medicine-a symposium report. Ann N Y Acad Sci 2019; 1462:27-36. [PMID: 31655007 DOI: 10.1111/nyas.14243] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [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: 09/06/2019] [Accepted: 09/06/2019] [Indexed: 12/20/2022]
Abstract
Adult stem cells are rare, undifferentiated cells found in all tissues of the body. Although normally kept in a quiescent, nondividing state, these cells can proliferate and differentiate to replace naturally dying cells within their tissue and to repair its wounds in response to injury. Due to their proliferative nature and ability to regenerate tissue, adult stem cells have the potential to treat a variety of degenerative diseases as well as aging. In addition, since stem cells are often thought to be the source of malignant tumors, understanding the mechanisms that keep their proliferative abilities in check can pave the way for new cancer therapies. While adult stem cells have had limited practical and clinical applications to date, several clinical trials of stem cell-based therapies are underway. This report details recent research presented at the New York Academy of Sciences on March 14, 2019 on understanding the factors that regulate stem cell activity and differentiation, with the hope of translating these findings into the clinic.
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Affiliation(s)
| | - Elaine Fuchs
- Robin Chemers Neustein Laboratory of Mammalian Cell Biology and Development, Howard Hughes Medical Institute, The Rockefeller University, New York, New York
| | - Irving Weissman
- Pathology Stem Cell Institute, Stanford University, Stanford, California
| | | | | | - Thomas A Rando
- Neurology & Neurological Sciences, Stanford University, Stanford, California
| | - Helen Blau
- Microbiology and Immunology - Baxter Labs, Stanford University, Stanford, California
| | - Shawon Debnath
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, New York
| | | | - Sangbum Park
- Department of Genetics, Yale University, New Haven, Connecticut
| | - Emmanuelle Passegué
- Columbia Stem Cell Initiative, Department of Genetics & Development, Columbia University, New York, New York
| | - Carla Kim
- Dana Farber/Harvard Cancer Center, Boston, Massachusetts.,Division of Hematology/Oncology, Stem Cell Program, Department of Pediatrics, Boston Children's Hospital, Boston, Massachusetts.,Genetics Department, Harvard Medical School, Boston, Massachusetts.,Harvard Stem Cell Institute, Cambridge, Massachusetts
| | - Mark A Krasnow
- Department of Biochemistry, Stanford University, Stanford, California
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28
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Natsuga K, Watanabe M, Nishie W, Shimizu H. Life before and beyond blistering: The role of collagen XVII in epidermal physiology. Exp Dermatol 2019; 28:1135-1141. [PMID: 29604146 DOI: 10.1111/exd.13550] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/25/2018] [Indexed: 12/15/2022]
Abstract
Type XVII collagen (COL17) is a transmembranous protein that is mainly expressed in the epidermal basal keratinocytes. Epidermal-dermal attachment requires COL17 expression at the hemidesmosomes of the epidermal basement membrane zone because congenital COL17 deficiency leads to junctional epidermolysis bullosa and acquired autoimmunity to COL17 induces bullous pemphigoid. Recently, in addition to facilitating epidermal-dermal attachment, COL17 has been reported to serve as a niche for hair follicle stem cells, to regulate proliferation in the interfollicular epidermis and to be present along the non-hemidesmosomal plasma membrane of epidermal basal keratinocytes. This review focuses on the physiological properties of COL17 in the epidermis, its role in maintaining stem cells and its association with signalling pathways. We propose possible solutions to unanswered questions in this field.
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Affiliation(s)
- Ken Natsuga
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Mika Watanabe
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Wataru Nishie
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Hiroshi Shimizu
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
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29
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Chang Y, Yu J. The protective effects of TGR5 against ultraviolet B irradiation in epidermal stem cells. J Cell Biochem 2019; 120:15038-15044. [PMID: 31168815 DOI: 10.1002/jcb.28765] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 11/26/2018] [Revised: 03/19/2019] [Accepted: 03/22/2019] [Indexed: 12/26/2022]
Abstract
Repetitive exposure to ultraviolet radiation (UVR) results in continuous insults to the skin, including continuous loss of the capacities of epidermal stem cells (ESCs). Takeda G-protein-coupled receptor-5 (TGR5) participates in a variety of physiological activities, but its biological function in skin has not been reported. In this study, we report that TGR5 could be detected in ESCs and its expression was reduced after ultraviolet B (UV-B) irradiation. Treatment with the specific TGR5 agonist 3-(2-chlorophenyl)-N-(4-chlorophenyl)-N,5-dimethylisoxazole-4-carboxamide (GPBARA) prevented UV-B-induced oxidative stress by reducing 4-hydroxy-2-nonenal and increasing the level of glutathione. We also found that the presence of GPBARA improved UV-B irradiation-induced mitochondrial dysfunction by elevating mitochondrial membrane potential. Interestingly, our results indicate that GPBARA pretreatment suppressed UV-B irradiation-induced reduced cell viability, release of lactic dehydrogenase, and secretion of high mobility group box 1. Notably, GPBARA pretreatment inhibited UV-B irradiation-induced decrease in integrin β1 and Krt19, dependent on TGR5. Mechanistically, we found that the activation of TGR5 by GPBARA increased Wnt1, Wnt3a, Myc, and cyclin D1 in ESCs. Our data suggest a new function of TGR5 in regulating ESCs.
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Affiliation(s)
- Yuan Chang
- Department of Dermatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Dermatology & STD Department, Luoyang Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - Jianbin Yu
- Department of Dermatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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30
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De Rosa L, Secone Seconetti A, De Santis G, Pellacani G, Hirsch T, Rothoeft T, Teig N, Pellegrini G, Bauer JW, De Luca M. Laminin 332-Dependent YAP Dysregulation Depletes Epidermal Stem Cells in Junctional Epidermolysis Bullosa. Cell Rep 2019; 27:2036-2049.e6. [PMID: 31091444 DOI: 10.1016/j.celrep.2019.04.055] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 03/12/2019] [Accepted: 04/10/2019] [Indexed: 01/09/2023] Open
Abstract
Laminin 332-deficient junctional epidermolysis bullosa (JEB) is a severe genetic skin disease. JEB is marked by epidermal stem cell depletion, the origin of which is unknown. We show that dysregulation of the YAP and TAZ pathway underpins such stem cell depletion. Laminin 332-mediated YAP activity sustains human epidermal stem cells, detected as holoclones. Ablation of YAP selectively depletes holoclones, while enforced YAP blocks conversion of stem cells into progenitors and indefinitely extends the keratinocyte lifespan. YAP is dramatically decreased in JEB keratinocytes, which contain only phosphorylated, inactive YAP. In normal keratinocytes, laminin 332 and α6β4 ablation abolish YAP activity and recapitulate the JEB phenotype. In JEB keratinocytes, laminin 332-gene therapy rescues YAP activity and epidermal stem cells in vitro and in vivo. In JEB cells, enforced YAP recapitulates laminin 332-gene therapy, thus uncoupling adhesion from proliferation in epidermal stem cells. This work has important clinical implication for ex vivo gene therapy of JEB.
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Affiliation(s)
- Laura De Rosa
- Centre for Regenerative Medicine "Stefano Ferrari," Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Alessia Secone Seconetti
- Centre for Regenerative Medicine "Stefano Ferrari," Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Giorgio De Santis
- Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Giovanni Pellacani
- Department of Surgery, Medicine, Dentistry, and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Tobias Hirsch
- Department of Plastic Surgery, Burn Centre, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Germany
| | - Tobias Rothoeft
- Department of Neonatology and Pediatric Intensive Care, University Children's Hospital, Ruhr-University Bochum, Germany
| | - Norbert Teig
- Department of Neonatology and Pediatric Intensive Care, University Children's Hospital, Ruhr-University Bochum, Germany
| | - Graziella Pellegrini
- Centre for Regenerative Medicine "Stefano Ferrari," Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy; Department of Surgery, Medicine, Dentistry, and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Johann W Bauer
- EB House Austria and Department of Dermatology, University Hospital of the Paracelsus Medical University, Salzburg, Austria
| | - Michele De Luca
- Centre for Regenerative Medicine "Stefano Ferrari," Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy.
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31
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Bonafont J, Mencía Á, García M, Torres R, Rodríguez S, Carretero M, Chacón-Solano E, Modamio-Høybjør S, Marinas L, León C, Escamez MJ, Hausser I, Del Río M, Murillas R, Larcher F. Clinically Relevant Correction of Recessive Dystrophic Epidermolysis Bullosa by Dual sgRNA CRISPR/Cas9-Mediated Gene Editing. Mol Ther 2019; 27:986-998. [PMID: 30930113 PMCID: PMC6520462 DOI: 10.1016/j.ymthe.2019.03.007] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 02/25/2019] [Accepted: 03/01/2019] [Indexed: 12/20/2022] Open
Abstract
Gene editing constitutes a novel approach for precisely correcting disease-causing gene mutations. Frameshift mutations in COL7A1 causing recessive dystrophic epidermolysis bullosa are amenable to open reading frame restoration by non-homologous end joining repair-based approaches. Efficient targeted deletion of faulty COL7A1 exons in polyclonal patient keratinocytes would enable the translation of this therapeutic strategy to the clinic. In this study, using a dual single-guide RNA (sgRNA)-guided Cas9 nuclease delivered as a ribonucleoprotein complex through electroporation, we have achieved very efficient targeted deletion of COL7A1 exon 80 in recessive dystrophic epidermolysis bullosa (RDEB) patient keratinocytes carrying a highly prevalent frameshift mutation. This ex vivo non-viral approach rendered a large proportion of corrected cells producing a functional collagen VII variant. The effective targeting of the epidermal stem cell population enabled long-term regeneration of a properly adhesive skin upon grafting onto immunodeficient mice. A safety assessment by next-generation sequencing (NGS) analysis of potential off-target sites did not reveal any unintended nuclease activity. Our strategy could potentially be extended to a large number of COL7A1 mutation-bearing exons within the long collagenous domain of this gene, opening the way to precision medicine for RDEB.
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Affiliation(s)
- Jose Bonafont
- Department of Biomedical Engineering, Carlos III University (UC3M), Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain; Fundación Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain
| | - Ángeles Mencía
- Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain; Fundación Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain
| | - Marta García
- Department of Biomedical Engineering, Carlos III University (UC3M), Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain; Fundación Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain
| | - Raúl Torres
- Molecular Cytogenetics Unit, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Sandra Rodríguez
- Molecular Cytogenetics Unit, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Marta Carretero
- Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain; Epithelial Biomedicine Division, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
| | - Esteban Chacón-Solano
- Department of Biomedical Engineering, Carlos III University (UC3M), Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain; Fundación Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain
| | - Silvia Modamio-Høybjør
- Department of Biomedical Engineering, Carlos III University (UC3M), Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain
| | - Lucía Marinas
- Department of Biomedical Engineering, Carlos III University (UC3M), Madrid, Spain
| | - Carlos León
- Department of Biomedical Engineering, Carlos III University (UC3M), Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain; Fundación Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain
| | - María J Escamez
- Department of Biomedical Engineering, Carlos III University (UC3M), Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain; Fundación Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain
| | - Ingrid Hausser
- Institute of Pathology IPH, Heidelberg University Hospital, Heidelberg, Germany
| | - Marcela Del Río
- Department of Biomedical Engineering, Carlos III University (UC3M), Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain; Fundación Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain; Epithelial Biomedicine Division, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
| | - Rodolfo Murillas
- Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain; Fundación Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain; Epithelial Biomedicine Division, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain.
| | - Fernando Larcher
- Department of Biomedical Engineering, Carlos III University (UC3M), Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain; Fundación Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain; Epithelial Biomedicine Division, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain.
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Inoue Y, Hasegawa S, Miyachi K, Yamada T, Nakata S, Ipponjima S, Hibi T, Nemoto T, Tanaka M, Suzuki R, Hirashima N. Development of 3D imaging technique of reconstructed human epidermis with immortalized human epidermal cell line. Exp Dermatol 2019; 27:563-570. [PMID: 29700854 DOI: 10.1111/exd.13672] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2018] [Indexed: 11/29/2022]
Abstract
The epidermis, the outermost layer of the skin, retains moisture and functions as a physical barrier against the external environment. Epidermal cells are continuously replaced by turnover, and thus to understand in detail the dynamic cellular events in the epidermis, techniques to observe live tissues in 3D are required. Here, we established a live 3D imaging technique for epidermis models. We first obtained immortalized human epidermal cell lines which have a normal differentiation capacity and fluorescence-labelled cytoplasm or nuclei. The reconstituted 3D epidermis was prepared with these lines. Using this culture system, we were able to observe the structure of the reconstituted epidermis live in 3D, which was similar to an in vivo epidermis, and evaluate the effect of a skin irritant. This technique may be useful for dermatological science and drug development.
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Affiliation(s)
- Yu Inoue
- Department of Cellular Biophysics, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Aichi, Japan.,Research Laboratories, Nippon Menard Cosmetic Co., Ltd., Nagoya, Aichi, Japan.,Nagoya University-MENARD Collaborative Research Chairs, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Seiji Hasegawa
- Research Laboratories, Nippon Menard Cosmetic Co., Ltd., Nagoya, Aichi, Japan.,Nagoya University-MENARD Collaborative Research Chairs, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Katsuma Miyachi
- Research Laboratories, Nippon Menard Cosmetic Co., Ltd., Nagoya, Aichi, Japan
| | - Takaaki Yamada
- Research Laboratories, Nippon Menard Cosmetic Co., Ltd., Nagoya, Aichi, Japan
| | - Satoru Nakata
- Research Laboratories, Nippon Menard Cosmetic Co., Ltd., Nagoya, Aichi, Japan
| | - Sari Ipponjima
- Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, Japan.,Graduate School of Information Science and Technology, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Terumasa Hibi
- Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Tomomi Nemoto
- Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, Japan.,Graduate School of Information Science and Technology, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Masahiko Tanaka
- Department of Cellular Biophysics, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Aichi, Japan
| | - Ryo Suzuki
- Department of Cellular Biophysics, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Aichi, Japan
| | - Naohide Hirashima
- Department of Cellular Biophysics, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Aichi, Japan.,Institute of Drug Discovery Science, Nagoya City University, Nagoya, Aichi, Japan
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Abstract
IMPACT STATEMENT In this study, our experiments confirmed that 50 Hz EMF affected hair follicle regrowth, and 50 Hz EMF enhanced K15+ stem cells proliferation in the hair bulb and follicular outer root sheath of hair follicles. Those results indicated that 50 Hz EMF may be beneficial for functional healing of hair loss.
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Affiliation(s)
- Xinping Li
- 1 Department of Physical Medicine and Rehabilitation, Guangdong Geriatric Institute, Guangdong Academy of Medical Sciences and Guangdong Provincial People's Hospital, Guangzhou 510080, China
- *These authors contributed equally to this work
| | - Xin Wang
- 2 Binzhou Medical University Hospital, Shandong 256603, China
- 3 The First Clinical College of Jinan University, Guangzhou 510632, China
- *These authors contributed equally to this work
| | - Liming Bai
- 1 Department of Physical Medicine and Rehabilitation, Guangdong Geriatric Institute, Guangdong Academy of Medical Sciences and Guangdong Provincial People's Hospital, Guangzhou 510080, China
| | - Pin Zhao
- 4 Southern Medical University Huayin laboratory, Guangzhou 510515, China
| | - Mingsheng Zhang
- 1 Department of Physical Medicine and Rehabilitation, Guangdong Geriatric Institute, Guangdong Academy of Medical Sciences and Guangdong Provincial People's Hospital, Guangzhou 510080, China
- 3 The First Clinical College of Jinan University, Guangzhou 510632, China
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Yang YH, Zhang RZ, Cheng S, Xu B, Tian T, Shi HX, Xiao L, Chen RH. Generation of Induced Pluripotent Stem Cells from Human Epidermal Keratinocytes. Cell Reprogram 2018; 20:356-364. [PMID: 30388030 DOI: 10.1089/cell.2018.0035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Induced pluripotent stem cells (iPSCs) play an important role in cell replacement therapy. Several studies have shown that keratinocytes are promising reprogrammed cells. We easily and efficiently enriched epidermal stem cells by attaching them for a limited time in culture dishes. Individual epidermal cells enriched in stem cells, which showed strong immunostaining for K15, were obtained and generated iPSCs within 10 days after transfection with lentiviruses encoding 4 transcription factors (OCT4, SOX2, KLF4, and NANOG). Immunofluorescent staining showed that those iPSCs expressed SOX2, OCT4, NANOG, and SSEA3 (a specific marker of embryonic stem cells). The embryoid bodies generated from those iPSCs stained positively for OCT4 and NANOG and also with the CDy1 dye that is specific for stem cells. When the iPSCs were subcutaneously injected into 4-week-old BALB/c nude mice, teratoma developed at the inoculation site. The iPSCs also demonstrated reduced DNA methylation compared with the original cells and could be induced to differentiate into adipocytes (mesodermal), hepatocytes (endodermal), and neural cells (ectodermal) in vitro. Our research provides an easy and efficient method for producing iPSCs from keratinocytes, which has important applications in cell replacement therapy.
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Affiliation(s)
- Yu-Hua Yang
- 1 Department of Dermatology, The Third Affiliated Hospital of Suzhou University , Changzhou, China
| | - Ru-Zhi Zhang
- 1 Department of Dermatology, The Third Affiliated Hospital of Suzhou University , Changzhou, China
| | - Sai Cheng
- 2 Department of Dermatology, The First Affiliated Hospital of XinXiang Medical College , XinXiang, China
| | - Bin Xu
- 1 Department of Dermatology, The Third Affiliated Hospital of Suzhou University , Changzhou, China
| | - Ting Tian
- 1 Department of Dermatology, The Third Affiliated Hospital of Suzhou University , Changzhou, China
| | - Hai-Xia Shi
- 1 Department of Dermatology, The Third Affiliated Hospital of Suzhou University , Changzhou, China
| | - Li Xiao
- 1 Department of Dermatology, The Third Affiliated Hospital of Suzhou University , Changzhou, China
| | - Ren-He Chen
- 1 Department of Dermatology, The Third Affiliated Hospital of Suzhou University , Changzhou, China
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Liu Z, Wen J, Leng X, Zhou Q, Zhou C, Zhao H, Wu X. A Simplified and Efficient Method to Isolate Primary Human Keratinocytes from Adult Skin Tissue. J Vis Exp 2018:57784. [PMID: 30199027 PMCID: PMC6231857 DOI: 10.3791/57784] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Primary human keratinocytes isolated from fresh skin tissues and their expansion in vitro have been widely used for laboratory research and for clinical applications. The conventional isolation method of human keratinocytes involves a two-step sequential enzymatic digestion procedure, which has been proven to be inefficient in generating primary cells from adult tissues due to the low cell recovery rate and reduced cell viability. We recently reported an advanced method to isolate human primary epidermal progenitor cells from skin tissues that utilizes the Rho kinase inhibitor Y-27632 in the medium. Compared with the traditional protocol, this new method is simpler, easier, and less time-consuming, and increases epithelial stem cell yield and enhances their stem cell characteristics. Moreover, the new methodology does not require the separation of the epidermis from the dermis, and, therefore, is suitable for isolating cells from different types of adult tissues. This new isolation method overcomes the major shortcomings of conventional methods and is more suitable for producing large numbers of epidermal cells with high potency both for laboratory and for clinical applications. Here, we describe the new method in detail.
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Affiliation(s)
- Zhenan Liu
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration and Laboratory for Tissue Engineering and Regeneration, School of Stomatology, Shandong University
| | - Jie Wen
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration and Laboratory for Tissue Engineering and Regeneration, School of Stomatology, Shandong University; Suzhou Institute of Shandong University
| | - Xue Leng
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration and Laboratory for Tissue Engineering and Regeneration, School of Stomatology, Shandong University
| | - Qian Zhou
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration and Laboratory for Tissue Engineering and Regeneration, School of Stomatology, Shandong University
| | - Changkuo Zhou
- Department of Urology, Qilu Hospital of Shandong University
| | - Huaqiang Zhao
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration and Laboratory for Tissue Engineering and Regeneration, School of Stomatology, Shandong University;
| | - Xunwei Wu
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration and Laboratory for Tissue Engineering and Regeneration, School of Stomatology, Shandong University; Suzhou Institute of Shandong University;
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Woappi Y, Hosseinipour M, Creek KE, Pirisi L. Stem Cell Properties of Normal Human Keratinocytes Determine Transformation Responses to Human Papillomavirus 16 DNA. J Virol 2018; 92:e00331-18. [PMID: 29593030 DOI: 10.1128/JVI.00331-18] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 03/17/2018] [Indexed: 01/22/2023] Open
Abstract
Human papillomavirus (HPV) infection of the genital tract is common; however, only about 10 to 15% of infections persist, and approximately 10 to 15% of these persistent infections result in cancer. Basal epidermal stem cells are the presumed target cells for HPV infection, providing a reservoir of latently infected cells that persist over time and initiate lesions. However, it is not known whether stem cell density has any influence on transformation of human keratinocytes by HPV. We explored the relationship between stem cell properties of normal human keratinocytes and their susceptibility to transformation by HPV16 DNA. Normal human keratinocyte isolates (NHKc) derived from different donors were cultured in three-dimensional anchorage-free suspension to assess their spheroid-forming ability. NHKc spheroids were then plated back into plastic monolayer culture and transfected with full-length HPV16 DNA, which we have previously shown to integrate into the host cell genome upon transfection. Spheroid-derived NHKc (SD-NHKc) and fluorescence-activated cell sorting-purified populations of basal stem-like keratinocytes, expressing low levels of epidermal growth factor receptor and high levels of integrin alpha 6 (EGFRlo/ITGα6hi), responded to transfection with HPV16 DNA with more vigorous proliferation, greater immortalization efficiency, and faster progression to differentiation resistance than autologous mass-cultured cells. Conversely, cells committed to terminal differentiation (EGFRhi/ITGα6lo) grew slowly after transfection with HPV16 and failed to generate immortalized or DR clones. HPV16 DNA induced stem cell properties in mass-cultured NHKc. We conclude that HPV16 preferentially immortalizes basal keratinocytes with stem cell properties and that these cells readily achieve a differentiation-resistant phenotype upon immortalization by HPV16.IMPORTANCE This paper explores the relationship between the stem cell properties of normal human epidermal cells in culture and these cells' susceptibility to transformation by HPV16 DNA, the HPV type present in about 50% of cervical cancers. We report variable susceptibilities to HPV16-mediated transformation among different keratinocyte isolates derived from neonatal foreskin. Our findings provide strong experimental evidence that HPV16 preferentially transforms basal keratinocytes with stem cell properties. Insights gained from these studies increase our understanding of the host cell-specific factors influencing individual susceptibility to HPV-driven transformation and the contributing factors leading to preneoplastic and neoplastic progression of HPV-positive lesions.
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Chen XD, Ruan SB, Lin ZP, Zhou Z, Zhang FG, Yang RH, Xie JL. Effects of porcine acellular dermal matrix treatment on wound healing and scar formation: Role of Jag1 expression in epidermal stem cells. Organogenesis 2018; 14:25-35. [PMID: 29420128 DOI: 10.1080/15476278.2018.1436023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Skin wound healing involves Notch/Jagged1 signaling. However, little is known how Jag1 expression level in epidermal stem cells (ESCs) contributes to wound healing and scar formation. We applied multiple cellular and molecular techniques to examine how Jag1 expression in ESCs modulates ESCs differentiation to myofibroblasts (MFB) in vitro, interpret how Jag1 expression in ESCs is involved in wound healing and scar formation in mice, and evaluate the effects of porcine acellular dermal matrix (ADM) treatment on wound healing and scar formation. We found that Jag1, Notch1 and Hes1 expression was up-regulated in the wound tissue during the period of wound healing. Furthermore, Jag1 expression level in the ESCs was positively associated with the level of differentiation to MFB. ESC-specific knockout of Jag1 delayed wound healing and promoted scar formation in vivo. In addition, we reported that porcine ADM treatment after skin incision could accelerate wound closure and reduce scar formation in vivo. This effect was associated with decreased expression of MFB markers, including α-SMA Col-1 and Col-III in wound tissues. Finally, we confirmed that porcine ADM treatment could increase Jag1, Notch1 and Hesl expression in wound tissues. Taken together, our results suggested that ESC-specific Jag1 expression levels are critical for wound healing and scar formation, and porcine ADM treatment would be beneficial in promoting wound healing and preventing scar formation by enhancing Notch/Jagged1 signaling pathway in ESCs.
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Affiliation(s)
- Xiao-Dong Chen
- a Department of Burn Surgery , The First People's Hospital of Foshan , Foshan , Guangdong , China
| | - Shu-Bin Ruan
- a Department of Burn Surgery , The First People's Hospital of Foshan , Foshan , Guangdong , China
| | - Ze-Peng Lin
- a Department of Burn Surgery , The First People's Hospital of Foshan , Foshan , Guangdong , China
| | - Ziheng Zhou
- b Department of Burn Surgery , First Affiliated Hospital of Sun Yat-Sen University , Guangzhou , Guangdong , China
| | - Feng-Gang Zhang
- a Department of Burn Surgery , The First People's Hospital of Foshan , Foshan , Guangdong , China
| | - Rong-Hua Yang
- a Department of Burn Surgery , The First People's Hospital of Foshan , Foshan , Guangdong , China
| | - Ju-Lin Xie
- b Department of Burn Surgery , First Affiliated Hospital of Sun Yat-Sen University , Guangzhou , Guangdong , China
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38
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Chermnykh E, Kalabusheva E, Vorotelyak E. Extracellular Matrix as a Regulator of Epidermal Stem Cell Fate. Int J Mol Sci 2018; 19:ijms19041003. [PMID: 29584689 PMCID: PMC5979429 DOI: 10.3390/ijms19041003] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 03/15/2018] [Accepted: 03/21/2018] [Indexed: 12/17/2022] Open
Abstract
Epidermal stem cells reside within the specific anatomic location, called niche, which is a microenvironment that interacts with stem cells to regulate their fate. Regulation of many important processes, including maintenance of stem cell quiescence, self-renewal, and homeostasis, as well as the regulation of division and differentiation, are common functions of the stem cell niche. As it was shown in multiple studies, extracellular matrix (ECM) contributes a lot to stem cell niches in various tissues, including that of skin. In epidermis, ECM is represented, primarily, by a highly specialized ECM structure, basement membrane (BM), which separates the epidermal and dermal compartments. Epidermal stem cells contact with BM, but when they lose the contact and migrate to the overlying layers, they undergo terminal differentiation. When considering all of these factors, ECM is of fundamental importance in regulating epidermal stem cells maintenance, proper mobilization, and differentiation. Here, we summarize the remarkable progress that has recently been made in the research of ECM role in regulating epidermal stem cell fate, paying special attention to the hair follicle stem cell niche. We show that the destruction of ECM components impairs epidermal stem cell morphogenesis and homeostasis. A deep understanding of ECM molecular structure as well as the development of in vitro system for stem cell maintaining by ECM proteins may bring us to developing new approaches for regenerative medicine.
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Affiliation(s)
- Elina Chermnykh
- Koltzov Institute of Developmental Biology Russian Academy of Sciences, Moscow 119334, Russia.
- Department of Regenerative Medicine, Institute of Translational Medicine, Pirogov Russian National Research Medical University, Moscow 117997, Russia.
| | - Ekaterina Kalabusheva
- Koltzov Institute of Developmental Biology Russian Academy of Sciences, Moscow 119334, Russia.
- Department of Regenerative Medicine, Institute of Translational Medicine, Pirogov Russian National Research Medical University, Moscow 117997, Russia.
| | - Ekaterina Vorotelyak
- Koltzov Institute of Developmental Biology Russian Academy of Sciences, Moscow 119334, Russia.
- Department of Regenerative Medicine, Institute of Translational Medicine, Pirogov Russian National Research Medical University, Moscow 117997, Russia.
- Faculty of Biology, Lomonosov Moscow State University, Moscow 119991, Russia.
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Mencía Á, Chamorro C, Bonafont J, Duarte B, Holguin A, Illera N, Llames SG, Escámez MJ, Hausser I, Del Río M, Larcher F, Murillas R. Deletion of a Pathogenic Mutation-Containing Exon of COL7A1 Allows Clonal Gene Editing Correction of RDEB Patient Epidermal Stem Cells. Mol Ther Nucleic Acids 2018; 11:68-78. [PMID: 29858091 PMCID: PMC5852297 DOI: 10.1016/j.omtn.2018.01.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 01/23/2018] [Accepted: 01/23/2018] [Indexed: 11/18/2022]
Abstract
Recessive dystrophic epidermolysis bullosa is a severe skin fragility disease caused by loss of functional type VII collagen at the dermal-epidermal junction. A frameshift mutation in exon 80 of COL7A1 gene, c.6527insC, is highly prevalent in the Spanish patient population. We have implemented gene-editing strategies for COL7A1 frame restoration by NHEJ-induced indels in epidermal stem cells from patients carrying this mutation. TALEN nucleases designed to cut within the COL7A1 exon 80 sequence were delivered to primary patient keratinocyte cultures by non-integrating viral vectors. After genotyping a large collection of vector-transduced patient keratinocyte clones with high proliferative potential, we identified a significant percentage of clones with COL7A1 reading frame recovery and Collagen VII protein expression. Skin equivalents generated with cells from a clone lacking exon 80 entirely were able to regenerate phenotypically normal human skin upon their grafting onto immunodeficient mice. These patient-derived human skin grafts showed Collagen VII deposition at the basement membrane zone, formation of anchoring fibrils, and structural integrity when analyzed 12 weeks after grafting. Our data provide a proof-of-principle for recessive dystrophic epidermolysis bullosa treatment through ex vivo gene editing based on removal of pathogenic mutation-containing, functionally expendable COL7A1 exons in patient epidermal stem cells.
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Affiliation(s)
- Ángeles Mencía
- Epithelial Biomedicine Division, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain; Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain
| | - Cristina Chamorro
- Department of Biomedical Engineering, Carlos III University (UC3M), Madrid, Spain; Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain
| | - Jose Bonafont
- Department of Biomedical Engineering, Carlos III University (UC3M), Madrid, Spain; Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain
| | - Blanca Duarte
- Epithelial Biomedicine Division, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain; Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain
| | - Almudena Holguin
- Epithelial Biomedicine Division, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain; Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain
| | - Nuria Illera
- Epithelial Biomedicine Division, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain; Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain
| | - Sara G Llames
- Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain
| | - Maria José Escámez
- Department of Biomedical Engineering, Carlos III University (UC3M), Madrid, Spain; Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain
| | - Ingrid Hausser
- Institute of Pathology, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Marcela Del Río
- Epithelial Biomedicine Division, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain; Department of Biomedical Engineering, Carlos III University (UC3M), Madrid, Spain; Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain
| | - Fernando Larcher
- Epithelial Biomedicine Division, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain; Department of Biomedical Engineering, Carlos III University (UC3M), Madrid, Spain; Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain.
| | - Rodolfo Murillas
- Epithelial Biomedicine Division, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain; Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain; Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) U714, Madrid, Spain.
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Abstract
The expression patterns of endogenous circular RNA (circRNA) molecules during epidermal stem cell (EpSC) differentiation have not previously been explored. Here, we show that circRNAs are abundantly expressed in EpSCs and that their expression change dramatically during differentiation in a coordinated manner. Overall, circRNAs are expressed at higher levels in the differentiated cells, and many upregulated circRNAs are derived from developmental genes, including four different circRNAs from DLG1. The observed changes in circRNA expression were largely independent of host gene expression, and circRNAs independently upregulated upon differentiation are more prone to AGO2 binding and have more predicted miRNA binding sites compared to stably expressed circRNAs. In particular, upregulated circRNAs from the HECTD1 and ZNF91 genes have exceptionally high numbers of AGO2 binding sites and predicted miRNA target sites, and circZNF91 contains 24 target sites for miR-23b-3p, which is known to play important roles in keratinocyte differentiation. We also observed that upregulated circRNAs are less likely to be flanked by homologues inverted Alu repeats compared to stably expressed circRNAs. This coincide with DHX9 being upregulated in the differentiated keratinocytes. Finally, none of the circRNAs upregulated upon differentiation were also upregulated upon DNMT3A or DNMT3B knockdown, making it unlikely that epigenetic mechanisms are governing the observed circRNA expression changes. Together, we provide a map of circRNA expression in EpSCs and their differentiated counterparts and shed light on potential function and regulation of differentially expressed circRNAs.
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Affiliation(s)
- Lasse Sommer Kristensen
- a Department of Molecular Biology and Genetics , Aarhus University , Aarhus , Denmark.,b Interdisciplinary Nanoscience Center (iNANO), Aarhus University , Aarhus , Denmark
| | | | - Morten Trillingsgaard Venø
- a Department of Molecular Biology and Genetics , Aarhus University , Aarhus , Denmark.,b Interdisciplinary Nanoscience Center (iNANO), Aarhus University , Aarhus , Denmark
| | - Jørgen Kjems
- a Department of Molecular Biology and Genetics , Aarhus University , Aarhus , Denmark.,b Interdisciplinary Nanoscience Center (iNANO), Aarhus University , Aarhus , Denmark
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Wen J, Zu T, Zhou Q, Leng X, Wu X. Y-27632 simplifies the isolation procedure of human primary epidermal cells by selectively blocking focal adhesion of dermal cells. J Tissue Eng Regen Med 2017; 12:e1251-e1255. [PMID: 28752652 DOI: 10.1002/term.2526] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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: 12/23/2016] [Revised: 06/25/2017] [Accepted: 07/24/2017] [Indexed: 11/09/2022]
Abstract
Primary skin epidermal cells isolation and in vitro expansion culture have been widely used for laboratory research and clinical applications. The conventional methods involving sequential enzymatic digestion of adult tissues have given low cell recovery rate and reduced cell viability. We report here an advanced method for human primary epidermal progenitor cells isolation from skin tissues including the Rho kinase inhibitor Y-27632. Compared with traditional protocols, the current protocol is simple, easy, and faster; moreover, it gives a greater yield of integrin-expressing epithelial stem cells. In addition, our new methodology does not require a separation of epidermis from dermis because the medium selectively blocks focal adhesion and growth of dermal cells. Importantly, the cells isolated from this method can maintain their regeneration potential and quickly reconstitute a mature human skin in vivo after grafting onto nude mice. In brief, we describe here a simple (one step) and serum-free method for isolating primary epidermal stem cells from adult tissues. The isolated cells may be widely used for both laboratory studies and clinical application, especially in the field of tissue engineering and regeneration.
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Affiliation(s)
- Jie Wen
- Laboratory for Tissue Engineering and Regeneration, School of Stomatology, Shandong University, Jinan, Shandong, China.,Cutaneous Biology Research Center, Massachusetts General Hospital, Boston, MA, USA
| | - Tingjian Zu
- Laboratory for Tissue Engineering and Regeneration, School of Stomatology, Shandong University, Jinan, Shandong, China
| | - Qian Zhou
- Laboratory for Tissue Engineering and Regeneration, School of Stomatology, Shandong University, Jinan, Shandong, China
| | - Xue Leng
- Laboratory for Tissue Engineering and Regeneration, School of Stomatology, Shandong University, Jinan, Shandong, China
| | - Xunwei Wu
- Laboratory for Tissue Engineering and Regeneration, School of Stomatology, Shandong University, Jinan, Shandong, China.,Cutaneous Biology Research Center, Massachusetts General Hospital, Boston, MA, USA
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Li Y, Zhang J, Yue J, Gou X, Wu X. Epidermal Stem Cells in Skin Wound Healing. Adv Wound Care (New Rochelle) 2017; 6:297-307. [PMID: 28894637 DOI: 10.1089/wound.2017.0728] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [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: 01/27/2017] [Accepted: 03/13/2017] [Indexed: 12/15/2022] Open
Abstract
Significance: Skin serves as a protective barrier for mammals. Epidermal stem cells are responsible for maintaining skin homeostasis. When cutaneous injuries occur, skin homeostasis and integrity are damaged, leading to dire consequences such as acute, chronic, or infected wounds. Skin wound healing is an intrinsic self-saving chain reaction, which is crucial to facilitating the replacement of damaged or lost tissue. Recent Advances: An immense amount of research has uncovered the underlying mechanisms behind the complex and highly regulated wound healing process. In this review, we will dissect the biological process of adult skin wound healing and emphasize the importance of epidermal stem cells during the wound healing. Critical Issues: We will comprehensively discuss the current clinical practices used on patients with cutaneous wounds, including both traditional skin grafting procedures and advanced grafting techniques with cultured skin stem cells. The majority of these leading techniques still retain some deficiencies during clinical use. Moreover, the regeneration of skin appendages after severe injuries remains a challenge in treatment. Future Directions: Understanding epidermal stem cells and their essential functions during skin wound healing are fundamental components behind the development of clinical treatment on patients with cutaneous wounds. It is important to improve the current standard of care and to develop novel techniques improving patient outcomes and long-term rehabilitation, which should be the goals of future endeavors in the field of skin wound healing.
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Affiliation(s)
- Yuanyuan Li
- Ben May Department for Cancer Research, The University of Chicago, Chicago, Illinois
| | - Jamie Zhang
- Ben May Department for Cancer Research, The University of Chicago, Chicago, Illinois
| | - Jiping Yue
- Ben May Department for Cancer Research, The University of Chicago, Chicago, Illinois
| | - Xuewen Gou
- Ben May Department for Cancer Research, The University of Chicago, Chicago, Illinois
| | - Xiaoyang Wu
- Ben May Department for Cancer Research, The University of Chicago, Chicago, Illinois
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43
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D'Arcangelo D, Tinaburri L, Dellambra E. The Role of p16 INK4a Pathway in Human Epidermal Stem Cell Self-Renewal, Aging and Cancer. Int J Mol Sci 2017; 18:ijms18071591. [PMID: 28737694 PMCID: PMC5536078 DOI: 10.3390/ijms18071591] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 07/13/2017] [Accepted: 07/19/2017] [Indexed: 12/31/2022] Open
Abstract
The epidermis is a self-renewing tissue. The balance between proliferation and differentiation processes is tightly regulated to ensure the maintenance of the stem cell (SC) population in the epidermis during life. Aging and cancer may be considered related endpoints of accumulating damages within epidermal self-renewing compartment. p16INK4a is a potent inhibitor of the G1/S-phase transition of the cell cycle. p16INK4a governs the processes of SC self-renewal in several tissues and its deregulation may result in aging or tumor development. Keratinocytes are equipped with several epigenetic enzymes and transcription factors that shape the gene expression signatures of different epidermal layers and allow dynamic and coordinated expression changes to finely balance keratinocyte self-renewal and differentiation. These factors converge their activity in the basal layer to repress p16INK4a expression, protecting cells from senescence, and preserving epidermal homeostasis and regeneration. Several stress stimuli may activate p16INK4a expression that orchestrates cell cycle exit and senescence response. In the present review, we discuss the role of p16INK4a regulators in human epidermal SC self-renewal, aging and cancer.
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Affiliation(s)
- Daniela D'Arcangelo
- Laboratory of Vascular Pathology, Istituto Dermopatico dell'Immacolata, Istituto di Ricovero e Cura a Carattere Scientifico (IDI-IRCCS), Fondazione Luigi Maria Monti (FLMM), via Monti di Creta 104, 00167 Rome, Italy.
| | - Lavinia Tinaburri
- Molecular and Cell Biology Laboratory, Istituto Dermopatico dell'Immacolata, Istituto di Ricovero e Cura a Carattere Scientifico (IDI-IRCCS), Fondazione Luigi Maria Monti (FLMM), via Monti di Creta 104, 00167 Rome, Italy.
| | - Elena Dellambra
- Molecular and Cell Biology Laboratory, Istituto Dermopatico dell'Immacolata, Istituto di Ricovero e Cura a Carattere Scientifico (IDI-IRCCS), Fondazione Luigi Maria Monti (FLMM), via Monti di Creta 104, 00167 Rome, Italy.
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44
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Trehan S, Michniak-Kohn B, Beri K. Plant stem cells in cosmetics: current trends and future directions. Future Sci OA 2017; 3:FSO226. [PMID: 29134115 DOI: 10.4155/fsoa-2017-0026] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 06/01/2017] [Indexed: 12/19/2022] Open
Abstract
Plant regeneration at the cellular and tissue level is a unique process. Similar to animals, the stem cells in plants have properties that help stimulate and regenerate plants after injury. The unique properties of plant stem cells have been a recent area of interest and focus both in developing new cosmetics and studying how these extracts/phytohormones will influence animal skin. This special report focuses on the current evidence-based trends in plant stem cell-based cosmetics and sheds light on the challenges that we need to overcome in order to see meaningful changes in human skin using topical cosmetics derived from plant stem cells. A new wave of cosmetic ingredients containing plant stem cells and their extracts has made its way into the industry. What role do these ingredients play in affecting the aging skin? Several ancient practices such as Ayurveda have used plants as a mainstay of treatment for thousands of years. Plant stem cells could hold an interesting role if we can harness these benefits in cosmetics to create safe and effective organic topical skin care.
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45
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Bai WF, Xu WC, Zhu HX, Huang H, Wu B, Zhang MS. Efficacy of 50 Hz electromagnetic fields on human epidermal stem cell transplantation seeded in collagen sponge scaffolds for wound healing in a murine model. Bioelectromagnetics 2017; 38:204-212. [PMID: 28106913 DOI: 10.1002/bem.22029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 10/07/2015] [Accepted: 12/03/2016] [Indexed: 11/11/2022]
Abstract
To explore the possible efficacy of electromagnetic fields (EMF) for skin tissue engineering, effects of EMF exposure on epidermal stem cells (ESC) seeded in collagen sponge scaffolds for wound healing in a murine model were investigated. The wound models of a full-thickness defect established with 36 7 ∼ 8-week-old nude mice were randomly divided into three groups: a control group, an ESC-only group, and an ESC with EMF exposure group (frequency of 50 Hz, magnetic induction of 5 mT, 60 min per day for 20 days). ESC were separated from human foreskin and cultured in vitro, and then transplanted with collagen sponge scaffolds as a delivery vehicle to wounds of the ESC-only group, and ESC with EMF exposure group was exposed to EMF after ESC transplantation. Effects of EMF on morphological changes and expression of β1 integrin in regenerated skins were observed. Wound healing rates and healing times were collected to evaluate the efficacy of repairment. Results showed that human ESC were successfully transplanted to nude mice, which facilitated the formation of intact skin on nude mice. In contrast to other groups, the wound healing of ESC with EMF exposure group was the fastest (P < 0.05), the structure of regenerated skins was more mature, and it contained more continuity in the number of viable cell layers and rich hair follicles' structure. These results suggest that the use of 50 Hz EMF as a non-invasive treatment can accelerate wound healing of ESC transplantation, and restore structural integrity of regenerated skin. Bioelectromagnetics. 38:204-212,2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Wen-Fang Bai
- Jinan University, Guangzhou, China.,Department of Rehabilitation Medicine, Institute of Geriatric Medicine, Guangdong Academy of Medical Sciences, Guangdong General Hospital, Guangzhou, China
| | - Wei-Cheng Xu
- Department of Rehabilitation Medicine, Institute of Geriatric Medicine, Guangdong Academy of Medical Sciences, Guangdong General Hospital, Guangzhou, China
| | - Hong-Xiang Zhu
- Department of Rehabilitation Medicine, Institute of Geriatric Medicine, Guangdong Academy of Medical Sciences, Guangdong General Hospital, Guangzhou, China
| | - Hong Huang
- School of Information, University of South Florida, Tampa, Florida
| | - Bo Wu
- Department of Rehabilitation Medicine, Institute of Geriatric Medicine, Guangdong Academy of Medical Sciences, Guangdong General Hospital, Guangzhou, China
| | - Ming-Sheng Zhang
- Department of Rehabilitation Medicine, Institute of Geriatric Medicine, Guangdong Academy of Medical Sciences, Guangdong General Hospital, Guangzhou, China
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46
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Beri K, Milgraum SS. Rhyme and reason: the role of circadian rhythms in skin and its implications for physicians. Future Sci OA 2016; 2:FSO115. [PMID: 28031962 DOI: 10.4155/fsoa-2016-0007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 02/22/2016] [Indexed: 12/20/2022] Open
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47
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Roy E, Neufeld Z, Cerone L, Wong HY, Hodgson S, Livet J, Khosrotehrani K. Bimodal behaviour of interfollicular epidermal progenitors regulated by hair follicle position and cycling. EMBO J 2016; 35:2658-2670. [PMID: 27797819 DOI: 10.15252/embj.201693806] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [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: 01/06/2016] [Revised: 09/23/2016] [Accepted: 09/27/2016] [Indexed: 11/09/2022] Open
Abstract
Interfollicular epidermal (IFE) homeostasis is a major physiological process allowing maintenance of the skin barrier function. Despite progress in our understanding of stem cell populations in different hair follicle compartments, cellular mechanisms of IFE maintenance, in particular, whether a hierarchy of progenitors exists within this compartment, have remained controversial. We here used multicolour lineage tracing with Brainbow transgenic labels activated in the epidermis to track individual keratinocyte clones. Two modes of clonal progression could be observed in the adult murine dorsal skin. Clones attached to hair follicles showed rapid increase in size during the growth phase of the hair cycle. On the other hand, clones distant from hair follicles were slow cycling, but could be mobilized by a proliferative stimulus. Reinforced by mathematical modelling, these data support a model where progenitor cycling characteristics are differentially regulated in areas surrounding or away from growing hair follicles. Thus, while IFE progenitors follow a non-hierarchical mode of development, spatiotemporal control by their environment can change their potentialities, with far-reaching implications for epidermal homeostasis, wound repair and cancer development.
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Affiliation(s)
- Edwige Roy
- UQ Centre for Clinical Research, Experimental Dermatology Group, The University of Queensland, Brisbane, Qld, Australia
| | - Zoltan Neufeld
- School of Mathematics and Physics, The University of Queensland, Brisbane, Qld, Australia
| | - Luca Cerone
- School of Mathematics and Physics, The University of Queensland, Brisbane, Qld, Australia
| | - Ho Yi Wong
- UQ Centre for Clinical Research, Experimental Dermatology Group, The University of Queensland, Brisbane, Qld, Australia
| | - Samantha Hodgson
- UQ Centre for Clinical Research, Experimental Dermatology Group, The University of Queensland, Brisbane, Qld, Australia
| | - Jean Livet
- Sorbonne Universités, INSERM, CNRS, Institut de la Vision UPMC Univ Paris 06, Paris, France
| | - Kiarash Khosrotehrani
- UQ Centre for Clinical Research, Experimental Dermatology Group, The University of Queensland, Brisbane, Qld, Australia .,UQ Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, Qld, Australia
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48
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Zhu FB, Fang XJ, Liu DW, Shao Y, Zhang HY, Peng Y, Zhong QL, Li YT, Liu DM. Substance P combined with epidermal stem cells promotes wound healing and nerve regeneration in diabetes mellitus. Neural Regen Res 2016; 11:493-501. [PMID: 27127492 PMCID: PMC4829018 DOI: 10.4103/1673-5374.179073] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Exogenous substance P accelerates wound healing in diabetes, but the mechanism remains poorly understood. Here, we established a rat model by intraperitoneally injecting streptozotocin. Four wounds (1.8 cm diameter) were drilled using a self-made punch onto the back, bilateral to the vertebral column, and then treated using amniotic membrane with epidermal stem cells and/or substance P around and in the middle of the wounds. With the combined treatment the wound-healing rate was 100% at 14 days. With prolonged time, type I collagen content gradually increased, yet type III collagen content gradually diminished. Abundant protein gene product 9.5- and substance P-immunoreactive nerve fibers regenerated. Partial nerve fiber endings extended to the epidermis. The therapeutic effects of combined substance P and epidermal stem cells were better than with amniotic membrane and either factor alone. Our results suggest that the combination of substance P and epidermal stem cells effectively contributes to nerve regeneration and wound healing in diabetic rats.
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Affiliation(s)
- Fei-Bin Zhu
- Burns Institute, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, China; Department of Burns, Huizhou Central People's Hospital, Huizhou, Guangdong Province, China
| | - Xiang-Jing Fang
- Department of Burns, Huizhou Central People's Hospital, Huizhou, Guangdong Province, China
| | - De-Wu Liu
- Burns Institute, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, China
| | - Ying Shao
- Department of Burns, Huizhou Central People's Hospital, Huizhou, Guangdong Province, China
| | - Hong-Yan Zhang
- Burns Institute, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, China
| | - Yan Peng
- Burns Institute, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, China
| | - Qing-Ling Zhong
- Burns Institute, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, China
| | - Yong-Tie Li
- Burns Institute, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, China
| | - De-Ming Liu
- Medical College of Nanchang University, Nanchang, Jiangxi Province, China
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49
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Chang HM, Huang WY, Lin SJ, Huang WC, Shen CR, Mao WY, Shen CN. ABCG2 deficiency in skin impairs re-epithelialization in cutaneous wound healing. Exp Dermatol 2016; 25:355-61. [PMID: 26739701 DOI: 10.1111/exd.12936] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/16/2015] [Indexed: 01/10/2023]
Abstract
The ATP-binding cassette transporter ABCG2 is expressed in the interfollicular epidermis and mediates the side-population phenotype in skin cells. However, the role of ABCG2 in skin is unclear. Increased expression levels of ABCG2 were found at the basal layer of transitional epidermis adjacent to cutaneous wounds in human patients, indicating that ABCG2 may be involved in regulating the wound healing process. To investigate the role of ABCG2 in cutaneous wound healing, full-thickness skin wounds were created in ABCG2 knockout (ABCG2-KO) and wild-type mice. The healing process was analysed and revealed that ABCG2 deficiency in skin results in delays in wound closure and impairments in re-epithelialization, as evidenced by reductions in both suprabasal differentiation and in p63-expressing keratinocytes migrating from transitional epidermis to epithelial tongues. The reduction in p63-expressing cells may be due to elevated levels of reactive oxygen species in ABCG2-KO epidermis, which can cause DNA damage and lead to proliferation arrest. To determine whether ABCG2 deficiency affects the potency of epidermal stem/progenitor cells (EPCs), transplantation studies were carried out, which demonstrated that ABCG2-KO EPCs display higher levels of γH2AX and lose the capacity to differentiate into suprabasal keratinocytes. A competitive repopulation assay confirmed that ABCG2 expression is critical for the proper expansion and differentiation of EPCs in cutaneous wounds. As EPCs are known to contribute to the healing of larger wounds, the current findings imply a functional role for ABCG2 in the expansion and differentiation of p63-expressing EPCs. Thus, ABCG2 deficiency in skin impairs re-epithelialization in cutaneous wound healing.
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Affiliation(s)
- Hsiao-Min Chang
- Institute of Microbiology and Immunology, National Yang-Ming University, Taipei, Taiwan.,Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Wen-Yen Huang
- Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan
| | - Sung-Jan Lin
- Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan.,Department of Dermatology, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
| | - Wei-Chao Huang
- Department of Plastic and Reconstructive Surgery, Buddhist Tzu Chi General Hospital, New Taipei City, Taiwan
| | - Chia-Rui Shen
- Department of Medical Biotechnology and Laboratory Science, Chang Gung University, Tao-Yuan, Taiwan
| | - Wan-Yu Mao
- Department of Biotechnology and Laboratory Science in Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chia-Ning Shen
- Institute of Microbiology and Immunology, National Yang-Ming University, Taipei, Taiwan.,Genomics Research Center, Academia Sinica, Taipei, Taiwan.,Department of Biotechnology and Laboratory Science in Medicine, National Yang-Ming University, Taipei, Taiwan
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50
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Zhao A, Yang L, Ma K, Sun M, Li L, Huang J, Li Y, Zhang C, Li H, Fu X. Overexpression of cyclin D1 induces the reprogramming of differentiated epidermal cells into stem cell-like cells. Cell Cycle 2016; 15:644-53. [PMID: 26890246 PMCID: PMC4845944 DOI: 10.1080/15384101.2016.1146838] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 01/04/2016] [Accepted: 01/20/2016] [Indexed: 02/05/2023] Open
Abstract
It has been reported that Wnt/β-catenin is critical for dedifferentiation of differentiated epidermal cells. Cyclin D1 (CCND1) is a β-catenin target gene. In this study, we provide evidence that overexpression of CCND1 induces reprogramming of epidermal cells into stem cell-like cells. After introducing CCND1 gene into differentiated epidermal cells, we found that the large flat-shaped cells with a small nuclear-cytoplasmic ratio changed into small round-shaped cells with a large nuclear-cytoplasmic ratio. The expressions of CK10, β1-integrin, Oct4 and Nanog in CCND1 induced cells were remarkably higher than those in the control group (P < 0.01). In addition, the induced cells exhibited a high colony-forming ability and a long-term proliferative potential. When the induced cells were implanted into a wound of laboratory animal model, the wound healing was accelerated. These results suggested that overexpression of CCND1 induced the reprogramming of differentiated epidermal cells into stem cell-like cells. This study may also offer a new approach to yield epidermal stem cells for wound repair and regeneration.
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Affiliation(s)
- Along Zhao
- Key Research Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to the Chinese PLA General Hospital, Beijing, P.R. China
- Tianjin Medical University, Tianjin, PR China
| | - Leilei Yang
- Institute of Radiation Medicine, Academy of Military Medical Sciences, Beijing, P.R. China
| | - Kui Ma
- Key Research Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to the Chinese PLA General Hospital, Beijing, P.R. China
| | - Mengli Sun
- Key Research Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to the Chinese PLA General Hospital, Beijing, P.R. China
| | - Lei Li
- Key Research Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to the Chinese PLA General Hospital, Beijing, P.R. China
| | - Jin Huang
- Key Research Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to the Chinese PLA General Hospital, Beijing, P.R. China
| | - Yang Li
- Institute of Radiation Medicine, Academy of Military Medical Sciences, Beijing, P.R. China
| | - Cuiping Zhang
- Key Research Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to the Chinese PLA General Hospital, Beijing, P.R. China
- CONTACT Cuiping Zhang Research Laboratory of Tissue Repair and Regeneration, First Hospital Affiliated to the Chinese PLA General Hospital, 51 Fucheng Road, Haidian District, Beijing, P.R. China
| | - Haihong Li
- Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, Shantou, Guangdong Province, P.R. China
- Haihong Li Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, Guangdong Province, P.R. China, 515041
| | - Xiaobing Fu
- Key Research Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to the Chinese PLA General Hospital, Beijing, P.R. China
- Xiaobing Fu Research Laboratory of Tissue Repair and Regeneration, First Hospital Affiliated to the Chinese PLA General Hospital, 51 Fucheng Road, Haidian District, Beijing, P.R. China
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