1
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Kremer M, Burkemper N. Aging Skin and Wound Healing. Clin Geriatr Med 2024; 40:1-10. [PMID: 38000854 DOI: 10.1016/j.cger.2023.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2023]
Abstract
Responsible for many essential functions of life, human skin is made up of many components, each of which undergoes significant functional changes with aging and photodamage. Wound healing was previously thought to be defective in the elderly given the higher presence of chronic wounds and the longer time required for re-epithelialization of acute wounds. However, these notions have been challenged in recent research, which has shown that wound healing in the elderly is delayed but not defective. Poor healing of chronic wounds in older populations is more often attributable to comorbid conditions rather than age alone.
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Affiliation(s)
- Michael Kremer
- Department of Dermatology, SSM Saint Louis University Hospital, 1225 South Grand Boulevard 3L, St. Louis, MO 63104, USA
| | - Nicole Burkemper
- Department of Dermatology, SSM Saint Louis University Hospital, 1225 South Grand Boulevard 3L, St. Louis, MO 63104, USA.
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2
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Gaba S, Jain U. Advanced biosensors for nanomaterial-based detection of transforming growth factor alpha and beta, a class of major polypeptide regulators. Int J Biol Macromol 2024; 257:128622. [PMID: 38065462 DOI: 10.1016/j.ijbiomac.2023.128622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 11/30/2023] [Accepted: 12/02/2023] [Indexed: 12/17/2023]
Abstract
Transforming growth factors (TGFs) regulate several cellular processes including, differentiation, growth, migration, extracellular matrix production, and apoptosis. TGF alpha (TGF-α) is a heterogeneous molecule containing 160 amino acid residues. It is a potent angiogenesis promoter that is activated by JAK-STAT signaling. Whereas TGF beta (TGF-β) consists of 390-412 amino acids. Smad and non-Smad signaling both occur in TGF beta. It is linked to immune cell activation, differentiation, and proliferation. It also triggers pre-apoptotic responses and inhibits cell proliferation. Both growth factors have a promising role in the development and homeostasis of tissues. Defects such as autoimmune diseases and cancer develop mechanisms to modulate checkpoints of the immune system resulting in altered growth factors profile. An accurate amount of these growth factors is essential for normal functioning, but an exceed or fall behind the normal level is alarming as it is linked to several disorders. This demands techniques for TGF-α and TGF-β profiling to effectively diagnose diseases, monitor their progression, and assess the efficacy of immunotherapeutic drugs. Quantitative detection techniques including the emergence of biosensing technology seem to accomplish the purpose. Until the present time, few biosensors have been designed in the context of TGF-α and TGF-β for disease detection, analyzing receptor binding, and interaction with carriers. In this paper, we have reviewed the physiology of transforming growth factor alpha and beta, including the types, structure, function, latent/active forms, signaling, and defects caused. It involves the description of biosensors on TGF-α and TGF-β, advances in technology, and future perspectives.
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Affiliation(s)
- Smriti Gaba
- School of Health Sciences and Technology, UPES, Dehradun 248007, Uttarakhand, India
| | - Utkarsh Jain
- School of Health Sciences and Technology, UPES, Dehradun 248007, Uttarakhand, India.
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3
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Chaker SC, Saad M, Mayes T, Lineaweaver WC. Burn Injury-related Growth Factor Expressions and Their Potential Roles in Burn-related Neuropathies. J Burn Care Res 2024; 45:25-31. [PMID: 37978864 DOI: 10.1093/jbcr/irad184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Indexed: 11/19/2023]
Abstract
In the context of burn injury, growth factors (GFs) play a significant role in mediating the complex local and systematic processes that occur. Among the many systemic complications that arise following a burn injury, peripheral neuropathy remains one of the most common. Despite the broad understanding of the effects GFs have on multiple tissues, their potential implications in both wound healing and neuropathy remain largely unexplored. Therefore, this review aims to investigate the expression patterns of GFs prominent during the burn wound healing process and explore the potential contributions these GFs have on the development of burn-related peripheral neuropathy.
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Affiliation(s)
- Sara C Chaker
- Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, TN, 37232USA
| | - Mariam Saad
- Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, TN, 37232USA
| | - Taylor Mayes
- Middle Tennessee State University, Murfreesboro, TN, 37132USA
| | - William C Lineaweaver
- Department of Plastic Surgery, Vanderbilt University Medical Center, Nashville, TN, 37232USA
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4
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Akamatsu H, Yamada T, Sanada A, Ishii Y, Iwata Y, Arima M, Hasegawa S, Sugiura K. Age-related decrease in responsiveness of CD271-positive skin stem cells to growth factors. Exp Dermatol 2022; 31:1264-1269. [PMID: 35524485 DOI: 10.1111/exd.14601] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 04/13/2022] [Accepted: 05/01/2022] [Indexed: 11/26/2022]
Abstract
Previous studies have demonstrated that the numbers of interfollicular epidermal stem cells (IFE-SCs) and dermal stem cells (DSCs) decrease with age and that this decrease is attributed to the age-related deterioration of skin homeostatic functions and the delay in wound healing. Meanwhile, functional decline in the stem cells is also considered to be responsible for the deteriorated skin homeostatic functions and the delayed wound healing associated with aging. In the present study, we focused on epidermal growth factor/epidermal growth factor receptor (EGF/EGFR) signaling and fibroblast growth factor-2/fibroblast growth factor receptor (FGF2/FGFR) signaling to analyze the age-related changes. Immunohistological analysis revealed that the expressions of EGFR and FGFR1 declined in IFE-SCs and DSCs with age, respectively. Additionally, IFE-SCs and DSCs isolated from the skin samples of elderly subjects exhibited lowered responsiveness to EGF and FGF2, respectively. These results suggest that the lowered responsiveness of the skin stem cells to growth factors may be a factor involved in the age-related deterioration of skin regenerative functions during wound healing and skin homeostatic functions. We hope that homeostatic and wound healing functions in the skin could be maintained if the decreased expressions of EGFR and FGFR1 in IFE-SCs and DSCs, respectively, can be suppressed.
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Affiliation(s)
- Hirohiko Akamatsu
- Department of Applied Cell and Regenerative Medicine, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi, Japan
| | - Takaaki Yamada
- Department of Applied Cell and Regenerative Medicine, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi, Japan.,Research Laboratories, Nippon Menard Cosmetic Co., Ltd., 2-7 Torimi-cho, Nishi-ku, Nagoya, Aichi, Japan.,Department of Dermatology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi, Japan
| | - Ayumi Sanada
- Research Laboratories, Nippon Menard Cosmetic Co., Ltd., 2-7 Torimi-cho, Nishi-ku, Nagoya, Aichi, Japan
| | - Yoshie Ishii
- Department of Applied Cell and Regenerative Medicine, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi, Japan.,Research Laboratories, Nippon Menard Cosmetic Co., Ltd., 2-7 Torimi-cho, Nishi-ku, Nagoya, Aichi, Japan
| | - Yohei Iwata
- Department of Dermatology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi, Japan
| | - Masaru Arima
- Department of Dermatology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi, Japan
| | - Seiji Hasegawa
- Research Laboratories, Nippon Menard Cosmetic Co., Ltd., 2-7 Torimi-cho, Nishi-ku, Nagoya, Aichi, Japan.,Department of Dermatology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi, Japan.,Nagoya University-MENARD Collaborative Chair, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa-ku, Nagoya, Aichi, Japan
| | - Kazumitsu Sugiura
- Department of Dermatology, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukakecho, Toyoake, Aichi, Japan
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5
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Choi S, Yoon M, Choi KY. Approaches for Regenerative Healing of Cutaneous Wound with an Emphasis on Strategies Activating the Wnt/β-Catenin Pathway. Adv Wound Care (New Rochelle) 2022; 11:70-86. [PMID: 33573472 PMCID: PMC9831250 DOI: 10.1089/wound.2020.1284] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Significance: In adult mammals, spontaneous repair of a cutaneous wound occurs slowly and leaves a scar with skin adnexa deficiencies. To accelerate cutaneous wound-healing rates and avoid scar formation, current studies have focused on regenerative therapies. Recent Advances: Emerging therapeutics for regenerative wound healing often focus on the use of growth factors and stem cells. However, these therapeutic approaches have limited routine clinical use due to high costs and technical requirements. Critical Issue: Understanding the molecular mechanisms involved in the signaling pathways for cutaneous wound healing and neogenic synthesis of the skin components is important for identification of novel targets for the development of regenerative wound-healing agents. Future Directions: The Wnt/β-catenin pathway is a well-known key player for enhancement of the overall healing process involving tissue regeneration via crosstalk with other signaling pathways. Strategies that activate the Wnt/β-catenin pathway via modulation of the pathway-controlling regulatory factors could provide effective therapeutic approaches for regenerative wound healing.
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Affiliation(s)
- Sehee Choi
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, Korea
| | - Minguen Yoon
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, Korea
| | - Kang-Yell Choi
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul, Korea.,CK Biotech, Inc., Seodaemun-Gu, Korea.,Correspondence: CK Biotech, Inc., Room 417, Engineering Research Park, 50 Yonsei Ro, Seodaemun-Gu 03722, Korea
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6
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Fu C, Arora A, Engl W, Sheetz M, Viasnoff V. Cooperative regulation of adherens junction expansion through Epidermal Growth Factor Receptor (EGFR) activation. J Cell Sci 2022; 135:274477. [DOI: 10.1242/jcs.258929] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 01/12/2022] [Indexed: 11/20/2022] Open
Abstract
The mechanisms controlling the dynamics of expansion of adherens junctions are significantly less understood than those controlling their static properties. Here, we report that for suspended cell aggregates, the time to form a new junction between two cells speeds up with the number of junctions that the cells are already engaged in. Upon junction formation, the activation of the Epidermal Growth Factor Receptor (EGFR) distally affects the actin turnover dynamics of the cell-free cortex. The “primed” actin cortex results in a faster expansion of the subsequent new junctions. In such aggregates, we show that this mechanism results in a cooperative acceleration of the junction expansion dynamics (kinetype) but leaves the cell contractility, and hence the final junction size (phenotype), unaltered.
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Affiliation(s)
- Chaoyu Fu
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
| | - Aditya Arora
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
| | - Wilfried Engl
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
| | - Michael Sheetz
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
- Biochemistry and Molecular Biology Department, University of Texas Medical Branch, Galveston, Texas, USA
| | - Virgile Viasnoff
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
- CNRS Biomechanics of Cell Contacts, Singapore, Singapore
- Department of Biological Sciences, National University of Singapore, Singapore, Singapore
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7
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Macleod T, Berekmeri A, Bridgewood C, Stacey M, McGonagle D, Wittmann M. The Immunological Impact of IL-1 Family Cytokines on the Epidermal Barrier. Front Immunol 2022; 12:808012. [PMID: 35003136 PMCID: PMC8733307 DOI: 10.3389/fimmu.2021.808012] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/06/2021] [Indexed: 12/25/2022] Open
Abstract
The skin barrier would not function without IL-1 family members, but their physiological role in the immunological aspects of skin barrier function are often overlooked. This review summarises the role of IL-1 family cytokines (IL-1α, IL-1β, IL-1Ra, IL-18, IL-33, IL-36α, IL-36β, IL-36γ, IL-36Ra, IL-37 and IL-38) in the skin. We focus on novel aspects of their interaction with commensals and pathogens, the important impact of proteases on cytokine activity, on healing responses and inflammation limiting mechanisms. We discuss IL-1 family cytokines in the context of IL-4/IL-13 and IL-23/IL-17 axis-driven diseases and highlight consequences of human loss/gain of function mutations in activating or inhibitory pathway molecules. This review highlights recent findings that emphasize the importance of IL-1 family cytokines in both physiological and pathological cutaneous inflammation and emergent translational therapeutics that are helping further elucidate these cytokines.
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Affiliation(s)
- Tom Macleod
- School of Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom.,Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), University of Leeds, Leeds, United Kingdom
| | - Anna Berekmeri
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), University of Leeds, Leeds, United Kingdom
| | - Charlie Bridgewood
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), University of Leeds, Leeds, United Kingdom
| | - Martin Stacey
- School of Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
| | - Dennis McGonagle
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), University of Leeds, Leeds, United Kingdom.,National Institute for Health Research (NIHR) Leeds Biomedical Research Centre (BRC), The Leeds Teaching Hospitals, Leeds, United Kingdom
| | - Miriam Wittmann
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), University of Leeds, Leeds, United Kingdom.,National Institute for Health Research (NIHR) Leeds Biomedical Research Centre (BRC), The Leeds Teaching Hospitals, Leeds, United Kingdom
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8
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Modification of the association by sex between the prenatal exposure to di(2-ethylhexyl) phthalate and fat percentage in a cohort of Mexicans schoolchildren. Int J Obes (Lond) 2022; 46:121-128. [PMID: 34545176 DOI: 10.1038/s41366-021-00952-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 07/30/2021] [Accepted: 08/18/2021] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Children's overweight and obesity are global public health problems, children with obesity have grater obesity risk as adults, thus leading to develop cardiometabolic diseases. Previous studies have found positive and significant associations between the exposure to phthalates and body mass index and body composition. OBJECTIVE To evaluate the modification of the association by sex between DEHP exposure during pregnancy and the percentage of body fat in a cohort of Mexican schoolchildren. MATERIAL AND METHODS The sample was comprised by children which had previously participated in a POSGRAD longitudinal study. A subsample of 190 mother-children binomials were included. Mothers' DEHP concentrations and its metabolites had been measured in the second trimester of pregnancy: Mono-2-ethylhexyl phthalate (MEHP), Mono-2-ethyl-5-carboxypentyl phthalate (MECPP), Mono-2-ethyl-5-hidroxyhexyl phthalate (MEHHP), and Mono-2-ethyl-5-oxohexyl phthalate (MEOHP). The children's adipose mass was measured at age 8, 9, and 10. Longitudinal data were analyzed using the mixed effects linear regression model, with intercept and random slope, adjusted by important confounders and stratified by sex. RESULTS We found a differentiated effect by sex, the exposure to DEHP during pregnancy significantly increases the adipose mass in boys. The average increase was 0.058% (p = 0.02) for every 1% variation in MECPP; 0.047% (p = 0.04) in MEHHP; 0.051% (p = 0.03) in MEOHP, and 0.066% (p = 0.007) in MECPP. CONCLUSIONS The results suggest an effect differentiated by sex; with boys being the main ones affected by the prenatal exposure to phthalates. However, we cannot rule out effects in girls.
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9
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Abstract
SUMMARY The advent of pluripotent stem cells following the discovery of Shinya Yamanaka (2012 Nobel prize in Medicine) brought about a regenerative medicine approach to virtually every human condition including hair loss. It is now possible to reprogram somatic cells (eg, blood or skin cells) from a person experiencing hair loss to generate autologous induced pluripotent stem cells (iPSCs), which could be amplified and cryopreserved. Subsequently, these iPSCs could be differentiated into various cell types such as dermal papilla cells, epithelial cells, melanocytes, and other cell types constituting functional hair follicle. Transplantation of human iPSC-derived folliculogenic cells into the nude mice has successfully generated xenografts with hair outgrowth. Because iPSCs provide a virtually unlimited source of folliculogenic cells for de novo formation of hair follicles, this approach has major advantages over current surgical hair restoration procedures, which merely redistribute existing hair follicles from one part of the sculp to another. Combined with robotics and automation of the transplantation process, this novel regenerative medicine approach is well poised to make hair restoration a routine procedure affordable for everybody who can benefit from it.
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10
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Nanba D, Toki F, Asakawa K, Matsumura H, Shiraishi K, Sayama K, Matsuzaki K, Toki H, Nishimura EK. EGFR-mediated epidermal stem cell motility drives skin regeneration through COL17A1 proteolysis. J Cell Biol 2021; 220:e202012073. [PMID: 34550317 PMCID: PMC8563287 DOI: 10.1083/jcb.202012073] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 06/25/2021] [Accepted: 08/12/2021] [Indexed: 01/09/2023] Open
Abstract
Skin regenerative capacity declines with age, but the underlying mechanisms are largely unknown. Here we demonstrate a functional link between epidermal growth factor receptor (EGFR) signaling and type XVII collagen (COL17A1) proteolysis on age-associated alteration of keratinocyte stem cell dynamics in skin regeneration. Live-imaging and computer simulation experiments predicted that human keratinocyte stem cell motility is coupled with self-renewal and epidermal regeneration. Receptor tyrosine kinase array identified the age-associated decline of EGFR signaling in mouse skin wound healing. Culture experiments proved that EGFR activation drives human keratinocyte stem cell motility with increase of COL17A1 by inhibiting its proteolysis through the secretion of tissue inhibitor of metalloproteinases 1 (TIMP1). Intriguingly, COL17A1 directly regulated keratinocyte stem cell motility and collective cell migration by coordinating actin and keratin filament networks. We conclude that EGFR-COL17A1 axis-mediated keratinocyte stem cell motility drives epidermal regeneration, which provides a novel therapeutic approach for age-associated impaired skin regeneration.
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Affiliation(s)
- Daisuke Nanba
- Department of Stem Cell Biology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Fujio Toki
- Department of Stem Cell Biology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kyosuke Asakawa
- Department of Stem Cell Biology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hiroyuki Matsumura
- Department of Stem Cell Biology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ken Shiraishi
- Department of Dermatology, Ehime University School of Medicine, Toon, Japan
| | - Koji Sayama
- Department of Dermatology, Ehime University School of Medicine, Toon, Japan
| | - Kyoichi Matsuzaki
- Department of Plastic and Reconstructive Surgery, International University of Health and Welfare, School of Medicine, Narita, Japan
| | - Hiroshi Toki
- Research Center for Nuclear Physics, Osaka University, Osaka, Japan
- Health Care Division, Health and Counseling Center, Osaka University, Osaka, Japan
| | - Emi K. Nishimura
- Department of Stem Cell Biology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
- Division of Aging and Regeneration, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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11
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Tan TS, Common JEA, Lim JSY, Badowski C, Firdaus MJ, Leonardi SS, Lane EB. A cell-based drug discovery assay identifies inhibition of cell stress responses as a new approach to treatment of epidermolysis bullosa simplex. J Cell Sci 2021; 134:272475. [PMID: 34643242 PMCID: PMC8542385 DOI: 10.1242/jcs.258409] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 09/07/2021] [Indexed: 11/20/2022] Open
Abstract
In the skin fragility disorder epidermolysis bullosa simplex (EBS), mutations in keratin 14 (K14, also known as KRT14) or keratin 5 (K5, also known as KRT5) lead to keratinocyte rupture and skin blistering. Severe forms of EBS are associated with cytoplasmic protein aggregates, with elevated kinase activation of ERK1 and ERK2 (ERK1/2; also known as MAPK3 and MAPK1, respectively), suggesting intrinsic stress caused by misfolded keratin protein. Human keratinocyte EBS reporter cells stably expressing GFP-tagged EBS-mimetic mutant K14 were used to optimize a semi-automated system to quantify the effects of test compounds on keratin aggregates. Screening of a protein kinase inhibitor library identified several candidates that reduced aggregates and impacted on epidermal growth factor receptor (EGFR) signalling. EGF ligand exposure induced keratin aggregates in EBS reporter keratinocytes, which was reversible by EGFR inhibition. EBS keratinocytes treated with a known EGFR inhibitor, afatinib, were driven out of activation and towards quiescence with minimal cell death. Aggregate reduction was accompanied by denser keratin filament networks with enhanced intercellular cohesion and resilience, which when extrapolated to a whole tissue context would predict reduced epidermal fragility in EBS patients. This assay system provides a powerful tool for discovery and development of new pathway intervention therapeutic avenues for EBS.
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Affiliation(s)
- Tong San Tan
- Skin Research Institute of Singapore, A*STAR, Immunos Building, 8A Biomedical Grove, Singapore138648.,Institute of Medical Biology, A*STAR, Immunos Building, 8A Biomedical Grove, Singapore138648
| | - John E A Common
- Skin Research Institute of Singapore, A*STAR, Immunos Building, 8A Biomedical Grove, Singapore138648.,Institute of Medical Biology, A*STAR, Immunos Building, 8A Biomedical Grove, Singapore138648
| | - John S Y Lim
- A*STAR Microscopy Platform, Immunos Building, 8A Biomedical Grove, Singapore138648
| | - Cedric Badowski
- Institute of Medical Biology, A*STAR, Immunos Building, 8A Biomedical Grove, Singapore138648
| | - Muhammad Jasrie Firdaus
- Skin Research Institute of Singapore, A*STAR, Immunos Building, 8A Biomedical Grove, Singapore138648.,Institute of Medical Biology, A*STAR, Immunos Building, 8A Biomedical Grove, Singapore138648
| | - Steven S Leonardi
- Skin Research Institute of Singapore, A*STAR, Immunos Building, 8A Biomedical Grove, Singapore138648
| | - E Birgitte Lane
- Skin Research Institute of Singapore, A*STAR, Immunos Building, 8A Biomedical Grove, Singapore138648.,Institute of Medical Biology, A*STAR, Immunos Building, 8A Biomedical Grove, Singapore138648
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12
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Hirose T, Kotoku J, Toki F, Nishimura EK, Nanba D. Label-free quality control and identification of human keratinocyte stem cells by deep learning-based automated cell tracking. Stem Cells 2021; 39:1091-1100. [PMID: 33783921 PMCID: PMC8359832 DOI: 10.1002/stem.3371] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 02/23/2021] [Indexed: 01/07/2023]
Abstract
Stem cell-based products have clinical and industrial applications. Thus, there is a need to develop quality control methods to standardize stem cell manufacturing. Here, we report a deep learning-based automated cell tracking (DeepACT) technology for noninvasive quality control and identification of cultured human stem cells. The combination of deep learning-based cascading cell detection and Kalman filter algorithm-based tracking successfully tracked the individual cells within the densely packed human epidermal keratinocyte colonies in the phase-contrast images of the culture. DeepACT rapidly analyzed the motion of individual keratinocytes, which enabled the quantitative evaluation of keratinocyte dynamics in response to changes in culture conditions. Furthermore, DeepACT can distinguish keratinocyte stem cell colonies from non-stem cell-derived colonies by analyzing the spatial and velocity information of cells. This system can be widely applied to stem cell cultures used in regenerative medicine and provides a platform for developing reliable and noninvasive quality control technology.
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Affiliation(s)
- Takuya Hirose
- Graduate School of Medical Care and Technology, Teikyo University, Tokyo, Japan
| | - Jun'ichi Kotoku
- Graduate School of Medical Care and Technology, Teikyo University, Tokyo, Japan
| | - Fujio Toki
- Department of Stem Cell Biology, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Emi K Nishimura
- Department of Stem Cell Biology, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.,Division of Aging and Regeneration, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Daisuke Nanba
- Department of Stem Cell Biology, Medical Research Institute, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
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13
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Geueke A, Niemann C. Stem and progenitor cells in sebaceous gland development, homeostasis and pathologies. Exp Dermatol 2021; 30:588-597. [PMID: 33599012 DOI: 10.1111/exd.14303] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 02/04/2021] [Accepted: 02/14/2021] [Indexed: 12/11/2022]
Abstract
Sebaceous glands (SGs), typically associated with hair follicles, are critical for the homeostasis and function of mammalian skin. The main physiological function of SGs is the production and holocrine secretion of sebum to lubricate and protect the skin. Defective SGs have been linked to a variety of skin disorders, including acne, seborrheic dermatitis and formation of sebaceous tumors. Thus, a better understanding how SGs are formed and maintained is important to unravel the underlying molecular and cellular mechanisms of SG pathologies and to find better and effective therapies. Over the last two decades, research has come a long way from the initial identification of skin epithelial stem cells to the isolation and functional characterization of multiple stem cell pools as well as a better understanding of their unique and complex activities that drive skin homeostasis and operate in skin pathologies. Here, we discuss recent progress in unravelling cellular mechanisms underlying SG development, homeostasis and sebaceous tumor formation and assess the role of stem and progenitor cells in controlling SG physiology and disease processes. The development of elegant in vivo imaging as well as various in vitro and ex vivo stem cell and SG tissue models will advance mechanistic studies on SG function and allow drug screening and testing for efficient and successful targeting SG pathologies.
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Affiliation(s)
- Anna Geueke
- Center for Molecular Medicine Cologne, CMMC Research Institute, University of Cologne, Cologne, Germany
| | - Catherin Niemann
- Center for Molecular Medicine Cologne, CMMC Research Institute, University of Cologne, Cologne, Germany.,Center for Biochemistry, Medical Faculty, University of Cologne, Cologne, Germany
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14
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Hanittinan O, Oo Y, Chaotham C, Rattanapisit K, Shanmugaraj B, Phoolcharoen W. Expression optimization, purification and in vitro characterization of human epidermal growth factor produced in Nicotiana benthamiana. ACTA ACUST UNITED AC 2020; 28:e00524. [PMID: 32953470 PMCID: PMC7486445 DOI: 10.1016/j.btre.2020.e00524] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/13/2020] [Accepted: 08/30/2020] [Indexed: 12/13/2022]
Abstract
Human epidermal growth factor (hEGF) has gained clinical importance due to its ability to promote wound healing. Due to its commercial applications and high market demand, recombinant EGF has been produced in several forms. Currently, plant expression system is considered as potential alternative for low-cost recombinant protein production. Hence, this study focused on improving the production of hEGF in plants by effective gene construct design and optimizing the Agrobacterium culture conditions for high protein production. In this context, hEGF gene was cloned into plant geminiviral expression vector pBYR2e and transformed in to N. benthamiana leaves via., agroinfiltration. The recombinant hEGF was purified from the plant crude extracts by single-step affinity chromatography. Furthermore, the plant-produced hEGF has shown to promote cell migration comparable to commercial hEGF in HaCaT cells in vitro. These results indicated the potential of plant expression system for the production of recombinant hEGF for tissue engineering applications.
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Affiliation(s)
- Oranicha Hanittinan
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Yamin Oo
- Department of Biochemistry and Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Chatchai Chaotham
- Department of Biochemistry and Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand.,Cell-based Drug and Health Products Development Research Unit, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Kaewta Rattanapisit
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand.,Research Unit for Plant-produced Pharmaceuticals, Chulalongkorn University, Bangkok, Thailand
| | - Balamurugan Shanmugaraj
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand.,Research Unit for Plant-produced Pharmaceuticals, Chulalongkorn University, Bangkok, Thailand
| | - Waranyoo Phoolcharoen
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand.,Research Unit for Plant-produced Pharmaceuticals, Chulalongkorn University, Bangkok, Thailand
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15
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Jin W, Lo KY, Sun YS, Ting YH, Simpson MJ. Quantifying the role of different surface coatings in experimental models of wound healing. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2020.115609] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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16
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Duleba M, Yamamoto Y, Neupane R, Rao W, Xie J, Qi Y, Liew AA, Niroula S, Zhang Y, Mahalingam R, Wang S, Goller K, Ajani JA, Vincent M, Ho KY, Hou JK, Hyams JS, Sylvester FA, Crum CP, McKeon F, Xian W. Cloning of ground-state intestinal stem cells from endoscopic biopsy samples. Nat Protoc 2020; 15:1612-1627. [PMID: 32238950 DOI: 10.1038/s41596-020-0298-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 01/16/2020] [Indexed: 12/30/2022]
Abstract
'Adult' or 'somatic' stem cells harbor an intrinsic ability to regenerate tissues. Heterogeneity of such stem cells along the gastrointestinal tract yields the known segmental specificity of this organ and may contribute to the pathology of certain enteric conditions. Here we detail technology for the generation of 'libraries' of clonogenic cells from 1-mm-diamter endoscopic biopsy samples from the human gastrointestinal tract. Each of the 150-300 independent clones in a typical stem cell library can be clonally expanded to billions of cells in a few weeks while maintaining genomic stability and the ability to undergo multipotent differentiation to the specific epithelia from which the sample originated. The key to this methodology is the intrinsic immortality of normal intestinal stem cells (ISCs) and culture systems that maintain them as highly immature, ground-state ISCs marked by a single-cell clonogenicity of 70% and a corresponding 250-fold proliferative advantage over spheroid technologies. Clonal approaches such as this enhance the resolution of molecular genetics, make genome editing easier, and may be useful in regenerative medicine, unravelling heterogeneity in disease, and facilitating drug discovery.
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Affiliation(s)
- Marcin Duleba
- Stem Cell Center, Department of Biology and Biochemistry, University of Houston, Houston, Texas, USA
| | - Yusuke Yamamoto
- Division of Cellular Signaling, National Cancer Center Research Institute, Tokyo, Japan
| | - Rahul Neupane
- Stem Cell Center, Department of Biology and Biochemistry, University of Houston, Houston, Texas, USA
| | - Wei Rao
- Stem Cell Center, Department of Biology and Biochemistry, University of Houston, Houston, Texas, USA
| | - Jingzhong Xie
- Stem Cell Center, Department of Biology and Biochemistry, University of Houston, Houston, Texas, USA
| | - Yutao Qi
- Stem Cell Center, Department of Biology and Biochemistry, University of Houston, Houston, Texas, USA
| | - Audrey-Ann Liew
- Stem Cell Center, Department of Biology and Biochemistry, University of Houston, Houston, Texas, USA
| | - Suchan Niroula
- Stem Cell Center, Department of Biology and Biochemistry, University of Houston, Houston, Texas, USA
| | - Yanting Zhang
- Stem Cell Center, Department of Biology and Biochemistry, University of Houston, Houston, Texas, USA
| | - Rajasekaran Mahalingam
- Stem Cell Center, Department of Biology and Biochemistry, University of Houston, Houston, Texas, USA
| | - Shan Wang
- Stem Cell Center, Department of Biology and Biochemistry, University of Houston, Houston, Texas, USA
| | - Kristina Goller
- Stem Cell Center, Department of Biology and Biochemistry, University of Houston, Houston, Texas, USA
| | - Jaffer A Ajani
- Department of Gastrointestinal Medical Oncology, Division of Cancer Medicine, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Matthew Vincent
- Tract Pharmaceuticals, Inc., Marlborough, Massachusetts, USA
| | - Khek Yu Ho
- Departments of Medicine and Pathology, National University of Singapore, Singapore, Singapore
| | - Jason K Hou
- Division of Gastroenterology, Baylor College of Medicine, Houston, Texas, USA
| | - Jeffrey S Hyams
- Division of Digestive Diseases, Hepatology, and Nutrition, Connecticut Children's Medical Center, Hartford, Connecticut, USA
| | - Francisco A Sylvester
- Division of Gastroenterology, Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Christopher P Crum
- Department of Pathology, Harvard Medical School and Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Frank McKeon
- Stem Cell Center, Department of Biology and Biochemistry, University of Houston, Houston, Texas, USA.
| | - Wa Xian
- Stem Cell Center, Department of Biology and Biochemistry, University of Houston, Houston, Texas, USA.
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17
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Leng L, Ma J, Sun X, Guo B, Li F, Zhang W, Chang M, Diao J, Wang Y, Wang W, Wang S, Zhu Y, He F, Reid LM, Wang Y. Comprehensive proteomic atlas of skin biomatrix scaffolds reveals a supportive microenvironment for epidermal development. J Tissue Eng 2020; 11:2041731420972310. [PMID: 33224464 PMCID: PMC7658515 DOI: 10.1177/2041731420972310] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 10/20/2020] [Indexed: 12/31/2022] Open
Abstract
Biomaterial scaffolds are increasingly being used to drive tissue regeneration. The limited success so far in human tissues rebuilding and therapy application may be due to inadequacy of the functionality biomaterial scaffold. We developed a new decellularized method to obtain complete anatomical skin biomatrix scaffold in situ with extracellular matrix (ECM) architecture preserved, in this study. We described a skin scaffold map by integrated proteomics and systematically analyzed the interaction between ECM proteins and epidermal cells in skin microenvironment on this basis. They were used to quantify structure and function of the skin's Matrisome, comprised of core ECM components and ECM-associated soluble signals that are key regulators of epidermal development. We especially revealed that ECM played a role in determining the fate of epidermal stem cells through hemidesmosome components. These concepts not only bring us a new understanding of the role of the skin ECM niche, they also provide an attractive combinational strategy based on tissue engineering principles with skin biomatrix scaffold materials for the acceleration and enhancement of tissue regeneration.
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Affiliation(s)
- Ling Leng
- Stem cell and Regenerative Medicine Lab, Department of Medical Science Research Center, Translational Medicine Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
- Department of Stem Cell and Regenerative Medicine Laboratory, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Jie Ma
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Life Omics, Beijing, China
| | - Xuer Sun
- Department of Stem Cell and Regenerative Medicine Laboratory, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Baolin Guo
- Department of Stem Cell and Regenerative Medicine Laboratory, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Fanlu Li
- Department of Stem Cell and Regenerative Medicine Laboratory, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Wei Zhang
- Department of Stem Cell and Regenerative Medicine Laboratory, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Mingyang Chang
- Department of Stem Cell and Regenerative Medicine Laboratory, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Jinmei Diao
- Department of Stem Cell and Regenerative Medicine Laboratory, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Yi Wang
- Department of Stem Cell and Regenerative Medicine Laboratory, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Wenjuan Wang
- Department of Dermatology, Chinese PLA General Hospital, Beijing, China
| | - Shuyong Wang
- Department of Stem Cell and Regenerative Medicine Laboratory, Institute of Health Service and Transfusion Medicine, Beijing, China
| | - Yunping Zhu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Life Omics, Beijing, China
- Basic Medical School, Anhui Medical University, Anhui, China
| | - Fuchu He
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Life Omics, Beijing, China
| | - Lola M Reid
- Department of Cell Biology and Physiology Program in Molecular Biology and Biotechnology, Lineberger Cancer Center, University of North Carolina School of Medicine, Chapel Hill, USA
| | - Yunfang Wang
- Department of Stem Cell and Regenerative Medicine Laboratory, Institute of Health Service and Transfusion Medicine, Beijing, China
- Translational Research Center, Beijing Tsinghua Chang Gung Hospital, Beijing, China
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18
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Fadai NT, Baker RE, Simpson MJ. Accurate and efficient discretizations for stochastic models providing near agent-based spatial resolution at low computational cost. J R Soc Interface 2019; 16:20190421. [PMID: 31640499 DOI: 10.1098/rsif.2019.0421] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Understanding how cells proliferate, migrate and die in various environments is essential in determining how organisms develop and repair themselves. Continuum mathematical models, such as the logistic equation and the Fisher-Kolmogorov equation, can describe the global characteristics observed in commonly used cell biology assays, such as proliferation and scratch assays. However, these continuum models do not account for single-cell-level mechanics observed in high-throughput experiments. Mathematical modelling frameworks that represent individual cells, often called agent-based models, can successfully describe key single-cell-level features of these assays but are computationally infeasible when dealing with large populations. In this work, we propose an agent-based model with crowding effects that is computationally efficient and matches the logistic and Fisher-Kolmogorov equations in parameter regimes relevant to proliferation and scratch assays, respectively. This stochastic agent-based model allows multiple agents to be contained within compartments on an underlying lattice, thereby reducing the computational storage compared to existing agent-based models that allow one agent per site only. We propose a systematic method to determine a suitable compartment size. Implementing this compartment-based model with this compartment size provides a balance between computational storage, local resolution of agent behaviour and agreement with classical continuum descriptions.
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Affiliation(s)
- Nabil T Fadai
- School of Mathematical Sciences, Queensland University of Technology, Brisbane, Queensland 4001, Australia
| | - Ruth E Baker
- Mathematical Institute, University of Oxford, Oxford OX2 6GG, UK
| | - Matthew J Simpson
- School of Mathematical Sciences, Queensland University of Technology, Brisbane, Queensland 4001, Australia
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19
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Negri VA, Logtenberg MEW, Renz LM, Oules B, Walko G, Watt FM. Delta-like 1-mediated cis-inhibition of Jagged1/2 signalling inhibits differentiation of human epidermal cells in culture. Sci Rep 2019; 9:10825. [PMID: 31346203 PMCID: PMC6658703 DOI: 10.1038/s41598-019-47232-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 07/04/2019] [Indexed: 11/20/2022] Open
Abstract
Epidermal homeostasis depends on a balance between self-renewal of stem cells and terminal differentiation of their progeny. Notch signalling is known to play a role in epidermal stem cell patterning and differentiation. However, the molecular mechanisms are incompletely understood. Here we demonstrate dynamic patterns of Notch ligand and receptor expression in cultured human epidermis. Notch2 and 3 act together to promote differentiation, while Notch1 decreases stem cell proliferation. The Notch ligand Jagged1 triggers differentiation when presented on an adhesive substrate or on polystyrene beads and over-rides the differentiation inhibitory effect of cell spreading. In contrast, Delta-like 1 (Dll1) overexpression abrogates the pro-differentiation effect of Jagged1 in a cell autonomous fashion. We conclude that Dll1 expression by stem cells not only stimulates differentiation of neighbouring cells in trans, but also inhibits differentiation cell autonomously. These results highlight the distinct roles of different Notch receptors and ligands in controlling epidermal homeostasis.
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Affiliation(s)
- Victor A Negri
- Centre for Stem Cells and Regenerative Medicine, Faculty of Life Sciences & Medicine, King's College London, 28th Floor, Tower Wing, Guy's Hospital, SE1 9RT, London, UK
| | - Meike E W Logtenberg
- Centre for Stem Cells and Regenerative Medicine, Faculty of Life Sciences & Medicine, King's College London, 28th Floor, Tower Wing, Guy's Hospital, SE1 9RT, London, UK.,Division of Immunology, The Netherlands Cancer Institute, Postbus 90203, 1006 BE, Amsterdam, The Netherlands
| | - Lisa M Renz
- Centre for Stem Cells and Regenerative Medicine, Faculty of Life Sciences & Medicine, King's College London, 28th Floor, Tower Wing, Guy's Hospital, SE1 9RT, London, UK.,Research Institute for Applied Bioanalytics and Drug Development, IMC University of Applied Sciences, A-3500, Krems an der Donau, Austria
| | - Bénédicte Oules
- Centre for Stem Cells and Regenerative Medicine, Faculty of Life Sciences & Medicine, King's College London, 28th Floor, Tower Wing, Guy's Hospital, SE1 9RT, London, UK
| | - Gernot Walko
- Centre for Stem Cells and Regenerative Medicine, Faculty of Life Sciences & Medicine, King's College London, 28th Floor, Tower Wing, Guy's Hospital, SE1 9RT, London, UK. .,Department of Biology and Biochemistry, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom.
| | - Fiona M Watt
- Centre for Stem Cells and Regenerative Medicine, Faculty of Life Sciences & Medicine, King's College London, 28th Floor, Tower Wing, Guy's Hospital, SE1 9RT, London, UK.
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20
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Advanced 2D/3D cell migration assay for faster evaluation of chemotaxis of slow-moving cells. PLoS One 2019; 14:e0219708. [PMID: 31314801 PMCID: PMC6636736 DOI: 10.1371/journal.pone.0219708] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 06/28/2019] [Indexed: 11/19/2022] Open
Abstract
Considering the essential role of chemotaxis of adherent, slow-moving cells in processes such as tumor metastasis or wound healing, a detailed understanding of the mechanisms and cues that direct migration of cells through tissues is highly desirable. The state-of-the-art chemotaxis instruments (e.g. microfluidic-based devices, bridge assays) can generate well-defined, long-term stable chemical gradients, crucial for quantitative investigation of chemotaxis in slow-moving cells. However, the majority of chemotaxis tools are designed for the purpose of an in-depth, but labor-intensive analysis of migratory behavior of single cells. This is rather inefficient for applications requiring higher experimental throughput, as it is the case of e.g. clinical examinations, chemoattractant screening or studies of the chemotaxis-related signaling pathways based on subcellular perturbations. Here, we present an advanced migration assay for accelerated and facilitated evaluation of the chemotactic response of slow-moving cells. The revised chemotaxis chamber contains a hydrogel microstructure–the migration arena, designed to enable identification of chemotactic behavior of a cell population in respect to the end-point of the experiment. At the same time, the assay in form of a microscopy slide enables direct visualization of the cells in either 2D or 3D environment, and provides a stable and linear gradient of chemoattractant. We demonstrate the correctness of the assay on the model study of HT-1080 chemotaxis in 3D and on 2D surface. Finally, we apply the migration arena chemotaxis assay to screen for a chemoattractant of primary keratinocytes, cells that play a major role in wound healing, being responsible for skin re-epithelialization and a successful wound closure. In direction of new therapeutic strategies to promote wound repair, we identified the chemotactic activity of the epithelial growth factor receptor (EGFR) ligands EGF and TGFα (transforming growth factor α).
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21
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Ruffin M, Brochiero E. Repair Process Impairment by Pseudomonas aeruginosa in Epithelial Tissues: Major Features and Potential Therapeutic Avenues. Front Cell Infect Microbiol 2019; 9:182. [PMID: 31214514 PMCID: PMC6554286 DOI: 10.3389/fcimb.2019.00182] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Accepted: 05/13/2019] [Indexed: 01/13/2023] Open
Abstract
Epithelial tissues protecting organs from the environment are the first-line of defense against pathogens. Therefore, efficient repair mechanisms after injury are crucial to maintain epithelial integrity. However, these healing processes can be insufficient to restore epithelial integrity, notably in infectious conditions. Pseudomonas aeruginosa infections in cutaneous, corneal, and respiratory tract epithelia are of particular concern because they are the leading causes of hospitalizations, disabilities, and deaths worldwide. Pseudomonas aeruginosa has been shown to alter repair processes, leading to chronic wounds and infections. Because of the current increase in the incidence of multi-drug resistant isolates of P. aeruginosa, complementary approaches to decrease the negative impact of these bacteria on epithelia are urgently needed. Here, we review the recent advances in the understanding of the impact of P. aeruginosa infections on the integrity and repair mechanisms of alveolar, airway, cutaneous and corneal epithelia. Potential therapeutic avenues aimed at counteracting this deleterious impact of infection are also discussed.
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Affiliation(s)
- Manon Ruffin
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, QC, Canada.,Département de Médecine, Université de Montréal, Montréal, QC, Canada.,INSERM, Centre de Recherche Saint-Antoine, CRSA, Sorbonne Université, Paris, France
| | - Emmanuelle Brochiero
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, QC, Canada.,Département de Médecine, Université de Montréal, Montréal, QC, Canada
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22
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Mainzer C, Remoué N, Molinari J, Rousselle P, Barricchello C, Lago JC, Sommer P, Sigaudo-Roussel D, Debret R. In vitro epidermis model mimicking IGF-1-specific age-related decline. Exp Dermatol 2019; 27:537-543. [PMID: 29603432 DOI: 10.1111/exd.13547] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/18/2018] [Indexed: 12/13/2022]
Abstract
Ageing is a complex multifaceted process affecting skin functionality and structure. Several 3D organotypic skin culture models have reproduced ageing by inducing replicative senescence, glycation or oxidative stress. Yet, very few models have focused on hormonal ageing and especially the insulin-like growth factor 1 (IGF-1) signalling pathway, which has been associated with longevity in animal studies and is necessary for the early stages of skin development. In this study, we built an organotypic epidermis model with targeted IGF-1 receptor knockdown to reproduce some aspects of hormonal ageing on skin. Our model displayed morphological and functional features of aged epidermis, which were mostly attributed to a loss of function of the Stratum basale. IGF-1 receptor knockdown keratinocytes depicted an extended cell cycle, reduced proliferation potential and reduced adhesion capacities and greater sensitivity to oxidative stress than control cells. Altogether, this model represents an essential tool for further investigations into the mechanisms linked to some aspects of hormonal decline or when screening for potent anti-ageing compounds.
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Affiliation(s)
- Carine Mainzer
- Laboratoire de Biologie Tissulaire et Ingénierie Thérapeutique, UMR5305 CNRS/Université Lyon 1, Lyon, France
| | - Noëlle Remoué
- Laboratoire de Biologie Tissulaire et Ingénierie Thérapeutique, UMR5305 CNRS/Université Lyon 1, Lyon, France
| | - Jennifer Molinari
- Natura Inovação e Tecnologia de Produtos, Cajamar, São Paulo, Brasil
| | - Patricia Rousselle
- Laboratoire de Biologie Tissulaire et Ingénierie Thérapeutique, UMR5305 CNRS/Université Lyon 1, Lyon, France
| | | | - Juliana C Lago
- Natura Inovação e Tecnologia de Produtos, Cajamar, São Paulo, Brasil
| | - Pascal Sommer
- Laboratoire de Biologie Tissulaire et Ingénierie Thérapeutique, UMR5305 CNRS/Université Lyon 1, Lyon, France
| | - Dominique Sigaudo-Roussel
- Laboratoire de Biologie Tissulaire et Ingénierie Thérapeutique, UMR5305 CNRS/Université Lyon 1, Lyon, France
| | - Romain Debret
- Laboratoire de Biologie Tissulaire et Ingénierie Thérapeutique, UMR5305 CNRS/Université Lyon 1, Lyon, France
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23
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From cell shape to cell fate via the cytoskeleton - Insights from the epidermis. Exp Cell Res 2019; 378:232-237. [PMID: 30872138 DOI: 10.1016/j.yexcr.2019.03.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 03/02/2019] [Accepted: 03/08/2019] [Indexed: 12/31/2022]
Abstract
Animal cells exhibit a wide range of shapes that reflect their diverse functions. Cell shape is determined by a balance between internal and external forces and therefore involves the cytoskeleton and its associated adhesion structures. Cell shape dynamics during development and homeostasis are tightly regulated and closely coordinated with cell fate determination. Defects in cell shape are a hallmark of many pathological conditions including cancer and skin diseases. This review highlights the links between cell shape and cell fate in the epidermis, which have been studied for over 40 years both in vitro and in vivo. Briefly discussing seminal experiments showing the strong coupling between keratinocyte cell shape and their fate we primarily focus on recent studies uncovering novel cellular and molecular mechanisms linking epidermal cell shape with cell growth, differentiation, asymmetric division, and delamination.
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24
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Ghasemkhah F, Latifi M, Hadjizadeh A, Shokrgozar MA. Potential core-shell designed scaffolds with a gelatin-based shell in achieving controllable release rates of proteins for tissue engineering approaches. J Biomed Mater Res A 2019; 107:1393-1405. [PMID: 30724475 DOI: 10.1002/jbm.a.36653] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 01/18/2019] [Accepted: 02/04/2019] [Indexed: 11/12/2022]
Abstract
The biomaterials design as core-shell structures opens a new door to the release of susceptible biomolecules in a controllable manner and enables to place natural biomaterials as shell layers to impart the effective biofunctional features at surfaces. In this study, core-shell designed scaffolds were prepared using coaxial electrospinning with hybrid of gelatin (GT)/polycaprolactone (PCL) at different weight ratios as their shell and protein solution as their core, followed by cross-linking to impart controllable release rates, tunable mechanical properties, and enhanced cytocompatibility. SEM, FM, and TEM confirmed the successful production of uniform core-shell nanofibers and homogeneous protein distribution. Results showed that an increase in GT proportion in the shell resulted in a decrease in fiber diameter, an increase of Young's modulus, and an intense burst release of BSA 0.2% which could be controlled through cross-linking. The mechanical tests revealed that the GT/PCL combining and cross-linking improved mechanical properties which correlated with an increase in spreading and proliferation of HUVECs. A slight burst release was also detected from BSA 0.05% and EGF encapsulated GT73P-cross-linked scaffold which demonstrated their applicability for a controlled release of dilute proteins. We were able to successfully incorporate two types of protein with different concentrations without supporting polymer into the GT shell to provide scaffolds possessing tunable mechanical properties and controllable release rates through blending with PCL at different ratios and/or cross-linking. These findings are promising to promote delivery systems of angiogenic growth factors that are needed a sustained release with different rates at each angiogenesis stage. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part A, 2019.
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Affiliation(s)
- Farzaneh Ghasemkhah
- Nanotechnology institute, Amirkabir University of Technology, Tehran, Iran.,Textile Engineering Department, Textile Excellence & Research Centers, Amirkabir University of Technology, Tehran, Iran
| | - Masoud Latifi
- Textile Engineering Department, Textile Excellence & Research Centers, Amirkabir University of Technology, Tehran, Iran
| | - Afra Hadjizadeh
- Biomedical Engineering Department, Amirkabir University of Technology, Tehran, Iran
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25
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Lin WC, Yeh IT, Hsiao HY. Development and Evaluation of Multistructured and Hierarchical Epidermal Growth Factor-Poly ( ε -Caprolactone) Scaffolds. IEEE Trans Nanobioscience 2018; 18:18-27. [PMID: 30507537 DOI: 10.1109/tnb.2018.2884279] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
In this paper, we separately fabricated the poly ( ε -caprolactone) (PCL) scaffolds containing epidermal growth factor (EGF) by using our-self fabricated electrospinning machine for tissue regeneration application. Several fundamental properties, including the dimensions, wettability, and EGF release profiles, of the fabricated EGF-PCL bead, fibrous, and multistructured scaffolds were characterized by using the scanning electron microscopy (SEM), contact angle goniometer, and vertical diffusion system. The EGF release profiles of three scaffolds were measured for 200 h, and the multistructured scaffold performed stable and long EGF release properties. Furthermore, the in vitro and in vivo experiments were conducted to evaluate the performance of three types of EGF-PCL scaffolds. The NIH-3T3 fibroblast cells were cultured on the scaffolds to study the effects of the released EGF by using the Alamar Blue Cell Viability Assays, fluorescence image analysis, and SEM. The animal experiment demonstrated that the multistructured EGF-PCL scaffold achieved 95% of the wound healing rate to the cut-damaged wounds after 16 days. Moreover, the histopathological skin tissue showed that the wound regenerated well after the treatment of the multistructured EGF-PCL scaffold. The developed multistructured EGF-PCL scaffold has a high potential for the wound healing applications.
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26
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D'Andrea P, Sciancalepore M, Veltruska K, Lorenzon P, Bandiera A. Epidermal Growth Factor - based adhesion substrates elicit myoblast scattering, proliferation, differentiation and promote satellite cell myogenic activation. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2018; 1866:504-517. [PMID: 30343052 DOI: 10.1016/j.bbamcr.2018.10.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 10/12/2018] [Accepted: 10/16/2018] [Indexed: 12/19/2022]
Abstract
The biochemical properties of muscle extracellular matrix are essential for stem cell adhesion, motility, proliferation and myogenic development. Recombinant elastin-like polypeptides are synthetic polypeptides that, besides maintaining some properties of the native protein, can be tailored by fusing bioactive sequences to their C-terminal. Our laboratory synthesized several Human Elastin-Like Polypeptides (HELP) derived from the sequence of human tropoelastin. Here, we developed a novel HELP family member by fusing the elastin-like backbone to the sequence of human Epidermal Growth Factor. We employed this synthetic protein, named HEGF, either alone or in combination with other proteins of the HELP family carrying RGD-integrin binding sites, as adhesion substrate for C2C12 myoblasts and satellite cells primary cultures. Adhesion of myoblasts to HEGF-based substrates induced scattering, decreased adhesion and cytoskeleton assembly; the concomitant presence of the RGD motifs potentiated all these effects. Recombinant substrates induced myoblasts proliferation, differentiation and the development of multinucleated myotubes, thus favoring myoblasts expansion and preserving their myogenic potential. The effects induced by adhesion substrates were inhibited by AG82 (Tyrphostin 25) and herbimycin A, indicating their dependence on the activation of both the EGF receptor and the tyrosine kinase c-src. Finally, HEGF increased the number of muscle stem cells (satellite cells) derived from isolated muscle fibers in culture, thus highlighting its potential as a novel substrate for skeletal muscle regeneration strategies.
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Affiliation(s)
- Paola D'Andrea
- Department of Life Sciences, University of Trieste, I-34127 Trieste, Italy.
| | - Marina Sciancalepore
- Department of Life Sciences, University of Trieste, I-34127 Trieste, Italy; Centre for Neuroscience B.R.A.I.N., University of Trieste, I-34127 Trieste, Italy
| | - Katerina Veltruska
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University in Prague V Holešovičkách 747/2, Praha 8, Czech Republic
| | - Paola Lorenzon
- Department of Life Sciences, University of Trieste, I-34127 Trieste, Italy; Centre for Neuroscience B.R.A.I.N., University of Trieste, I-34127 Trieste, Italy
| | - Antonella Bandiera
- Department of Life Sciences, University of Trieste, I-34127 Trieste, Italy
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Rafael-Vázquez L, García-Trejo S, Aztatzi-Aguilar O, Bazán-Perkins B, Quintanilla-Vega B. Exposure to diethylhexyl phthalate (DEHP) and monoethylhexyl phthalate (MEHP) promotes the loss of alveolar epithelial phenotype of A549 cells. Toxicol Lett 2018; 294:135-144. [DOI: 10.1016/j.toxlet.2018.05.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 04/13/2018] [Accepted: 05/09/2018] [Indexed: 10/16/2022]
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Vinceneux Talvande B, Carvalho Lallement P, Safa G, Journet Tollhupp J, Lembelembe JP, Blaise S, Maillard H. Use of Cellutome for the healing of venous or mixed ulcers. Int Wound J 2018; 15:993-999. [PMID: 30091520 DOI: 10.1111/iwj.12966] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 06/05/2018] [Accepted: 06/15/2018] [Indexed: 11/29/2022] Open
Abstract
Venous or mixed ulcers are common and invalidating. Cutaneous transplants may be necessary if conventional treatment is ineffective. We evaluated the performance of Cellutome in promoting the healing of venous or mixed ulcers 2 months after grafting. This was a retrospective, multi-centric, descriptive study of patients who had a venous or mixed ulcer for at least several months and who received an autologous skin graft using the Cellutome system at least 2 months before. The principle evaluation criterion was the state of the wound after 2 months (completely healed vs not healed). The secondary evaluation criterion was the percentage of wound healing after 2 months. A total of 47 patients were included in the study. The ulcers had evolved over an average of 18 months. The average surface area was 13.37 cm2 . After 2 months, the grafts of 26 of 47 patients (55.3%) were completely healed. The grafts of 21 patients (44.6%) were not completely healed but showed an average rate of healing of 51%. Use of the Cellutome system for epidermal transplants promoted complete or improved healing after 2 months for 55.3% of patients with chronic venous or mixed ulcers. The limited data on the rate of healing of conventional transplants in the literature report rates of approximately 50%. The Cellutome system may therefore be of interest as the healing rate is similar to that of conventional techniques, but using a much simpler, painless procedure on an outpatient basis.
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Affiliation(s)
| | | | - Gilles Safa
- Service de Dermatologie du CH de St Brieuc, Saint Brieuc, France
| | | | | | - Sophie Blaise
- Service de Médecine vasculaire La Tronche, La Tronche, France
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Furlan F, Eden G, Archinti M, Arnaudova R, Andreotti G, Citro V, Cubellis MV, Motta A, Degryse B. D2A-Ala peptide derived from the urokinase receptor exerts anti-tumoural effects in vitro and in vivo. Peptides 2018; 101:17-24. [PMID: 29273518 DOI: 10.1016/j.peptides.2017.12.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 12/10/2017] [Accepted: 12/18/2017] [Indexed: 11/28/2022]
Abstract
D2A-Ala is a synthetic peptide that has been created by introducing mutations in the original D2A sequence, 130IQEGEEGRPKDDR142 of human urokinase receptor (uPAR). In vitro, D2A-Ala peptide displays strong anti-tumoural properties inhibiting EGF-induced chemotaxis, invasion and proliferation of a human fibrosarcoma cell line, HT 1080, and a human colorectal adenocarcinoma cell line, HT 29. D2A-Ala exerts its effects by preventing EGF receptor (EGFR) phosphorylation. To test D2A-Ala in vivo, this peptide was PEGylated generating polyethyleneglycol (PEG)-D2A-Ala peptide. PEGylation did not alter the inhibitory properties of D2A-Ala. Human tumour xenografts in the immunodeficient nude mice using HT 1080 and HT 29 cell lines showed that PEG-D2A-Ala significantly prevents tumour growth decreasing size, weight and density of tumours. The most efficient doses of the peptide were 5 and 10 mg/kg, thereby relevant for possible development of the peptide into a drug against cancer in particular tumours expressing EGFR.
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Affiliation(s)
- Federico Furlan
- Dept. of Molecular Biology and Functional Genomics, DIBIT, Università Vita-Salute San Raffaele, Via Olgettina 58, 20132 Milan, Italy
| | - Gabriele Eden
- IFOM, FIRC Institute of Molecular Oncology, Via Adamello 16, 20139 Milan, Italy
| | - Marco Archinti
- Dept. of Molecular Biology and Functional Genomics, DIBIT, Università Vita-Salute San Raffaele, Via Olgettina 58, 20132 Milan, Italy
| | - Ralitsa Arnaudova
- Dept. of Molecular Biology and Functional Genomics, DIBIT, Università Vita-Salute San Raffaele, Via Olgettina 58, 20132 Milan, Italy
| | - Giuseppina Andreotti
- Istituto di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche, Via Campi Flegrei 34, 80078 Pozzuoli (Naples), Italy
| | - Valentina Citro
- Dipartimento di Biologia, Università Federico II, Naples, Italy
| | | | - Andrea Motta
- Istituto di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche, Via Campi Flegrei 34, 80078 Pozzuoli (Naples), Italy
| | - Bernard Degryse
- Dept. of Molecular Biology and Functional Genomics, DIBIT, Università Vita-Salute San Raffaele, Via Olgettina 58, 20132 Milan, Italy.
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Chernoff EAG, Sato K, Salfity HVN, Sarria DA, Belecky-Adams T. Musashi and Plasticity of Xenopus and Axolotl Spinal Cord Ependymal Cells. Front Cell Neurosci 2018. [PMID: 29535610 PMCID: PMC5835034 DOI: 10.3389/fncel.2018.00045] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The differentiated state of spinal cord ependymal cells in regeneration-competent amphibians varies between a constitutively active state in what is essentially a developing organism, the tadpole of the frog Xenopus laevis, and a quiescent, activatable state in a slowly growing adult salamander Ambystoma mexicanum, the Axolotl. Ependymal cells are epithelial in intact spinal cord of all vertebrates. After transection, body region ependymal epithelium in both Xenopus and the Axolotl disorganizes for regenerative outgrowth (gap replacement). Injury-reactive ependymal cells serve as a stem/progenitor cell population in regeneration and reconstruct the central canal. Expression patterns of mRNA and protein for the stem/progenitor cell-maintenance Notch signaling pathway mRNA-binding protein Musashi (msi) change with life stage and regeneration competence. Msi-1 is missing (immunohistochemistry), or at very low levels (polymerase chain reaction, PCR), in both intact regeneration-competent adult Axolotl cord and intact non-regeneration-competent Xenopus tadpole (Nieuwkoop and Faber stage 62+, NF 62+). The critical correlation for successful regeneration is msi-1 expression/upregulation after injury in the ependymal outgrowth and stump-region ependymal cells. msi-1 and msi-2 isoforms were cloned for the Axolotl as well as previously unknown isoforms of Xenopus msi-2. Intact Xenopus spinal cord ependymal cells show a loss of msi-1 expression between regeneration-competent (NF 50-53) and non-regenerating stages (NF 62+) and in post-metamorphosis froglets, while msi-2 displays a lower molecular weight isoform in non-regenerating cord. In the Axolotl, embryos and juveniles maintain Msi-1 expression in the intact cord. In the adult Axolotl, Msi-1 is absent, but upregulates after injury. Msi-2 levels are more variable among Axolotl life stages: rising between late tailbud embryos and juveniles and decreasing in adult cord. Cultures of regeneration-competent Xenopus tadpole cord and injury-responsive adult Axolotl cord ependymal cells showed an identical growth factor response. Epidermal growth factor (EGF) maintains mesenchymal outgrowth in vitro, the cells are proliferative and maintain msi-1 expression. Non-regeneration competent Xenopus ependymal cells, NF 62+, failed to attach or grow well in EGF+ medium. Ependymal Msi-1 expression in vivo and in vitro is a strong indicator of regeneration competence in the amphibian spinal cord.
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Affiliation(s)
- Ellen A G Chernoff
- Department of Biology, Indiana University-Purdue University Indianapolis, Indianapolis, IN, United States
| | - Kazuna Sato
- Department of Biology, Indiana University-Purdue University Indianapolis, Indianapolis, IN, United States
| | - Hai V N Salfity
- Department of Biology, Indiana University-Purdue University Indianapolis, Indianapolis, IN, United States
| | - Deborah A Sarria
- Department of Biology, Indiana University-Purdue University Indianapolis, Indianapolis, IN, United States
| | - Teri Belecky-Adams
- Department of Biology, Indiana University-Purdue University Indianapolis, Indianapolis, IN, United States
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Role of EGF receptor signaling on morphogenesis of eyelid and meibomian glands. Exp Eye Res 2017; 163:58-63. [PMID: 28950938 DOI: 10.1016/j.exer.2017.04.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2017] [Revised: 04/17/2017] [Accepted: 04/17/2017] [Indexed: 12/11/2022]
Abstract
The epidermal growth factor receptor (EGFR) signaling has a pivotal role in the regulation of morphogenesis during development and maintenance of homeostasis in adult eyelid and its adnexa. Studies have demonstrated that during eyelid morphogenesis the EGFR signaling pathway is responsible for keratinocyte and mesenchymal cell proliferation and migration at the eyelid tip. For meibomian gland morphogenesis, EGFR signaling activation stimulates meibomian gland epithelial cell proliferation. EGFR signaling pathway functions through multiple downstream signals such as ERK, Rho/ROCK and integrin and is regulated by a variety of upstream signals including Adam17, GPR48 and FGFR signaling. Herein we review the literature that describe the role of EGFR and its related signaling pathways in eyelid and meibomian gland morphogenesis.
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Local effects of epidermal growth factor on the wound healing in esophageal anastomosis: An experimental study. Int J Pediatr Otorhinolaryngol 2017; 99:8-12. [PMID: 28688571 DOI: 10.1016/j.ijporl.2017.05.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/02/2017] [Accepted: 05/22/2017] [Indexed: 12/12/2022]
Abstract
OBJECTIVE In this study with the experimental model of primary repair of esophageal atresia(EA), we investigated the effects of the epidermal growth factor(EGF) on wound healing in the anastomosis of EA. MATERIALS AND METHODS Forty rabbits that were performed a resection of a 1-cm segment of the cervical esophagus followed by the end-to-end anastomosis were divided into four groups. Group I (7-day group) and III (21-day group), the control groups, had no EGF applied to the anastomosis. In group II (7-day group) and group III (21-day group), all around the anastomoses were locally covered with 100 μg/kg EGF. Group 1, 2 and 3, 4 were sacrificed on the 7th and 21st day, respectively. We investigated and compared with bursting pressure, vascularization around the anastomotic line by histopathology, inflammation, and fibroblast granulation as well as hydroxyproline level by biochemical. RESULTS No significant difference was found at vascularization and inflammation between all of the groups (p > 0.05). Considering the critical parameters of the groups, at bursting pressure difference was found between group 1 and 2 as well as 3 and (p < 0.05). At fibroblast granulation and hydroxyproline level, no difference was found between group 1 and 2 (p > 0.05) but the difference between group 3 and 4 (p < 0.05). CONCLUSION EGF might be useful in preventing anastomotic leakage of esophageal atresia in primary anastomosis of esophageal atresia by accelerating wound healing process and increasing the stability of the anastomotic line.
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Overactive Epidermal Growth Factor Receptor Signaling Leads to Increased Fibrosis after Severe Acute Respiratory Syndrome Coronavirus Infection. J Virol 2017; 91:JVI.00182-17. [PMID: 28404843 DOI: 10.1128/jvi.00182-17] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 03/31/2017] [Indexed: 02/06/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus (SARS-CoV) is a highly pathogenic respiratory virus that causes morbidity and mortality in humans. After infection with SARS-CoV, the acute lung injury caused by the virus must be repaired to regain lung function. A dysregulation in this wound healing process leads to fibrosis. Many survivors of SARS-CoV infection develop pulmonary fibrosis (PF), with higher prevalence in older patients. Using mouse models of SARS-CoV pathogenesis, we have identified that the wound repair pathway, controlled by the epidermal growth factor receptor (EGFR), is critical to recovery from SARS-CoV-induced tissue damage. In mice with constitutively active EGFR [EGFR(DSK5) mice], we find that SARS-CoV infection causes enhanced lung disease. Importantly, we show that during infection, the EGFR ligands amphiregulin and heparin-binding EGF-like growth factor (HB-EGF) are upregulated, and exogenous addition of these ligands during infection leads to enhanced lung disease and altered wound healing dynamics. Our data demonstrate a key role of EGFR in the host response to SARS-CoV and how it may be implicated in lung disease induced by other highly pathogenic respiratory viruses.IMPORTANCE PF has many causative triggers, including severe respiratory viruses such as SARS-CoV. Currently there are no treatments to prevent the onset or limit the progression of PF, and the molecular pathways underlying the development of PF are not well understood. In this study, we identified a role for the balanced control of EGFR signaling as a key factor in progression to PF. These data demonstrate that therapeutic treatment modulating EGFR activation could protect against PF development caused by severe respiratory virus infection.
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Curcumin inhibits epigen and amphiregulin upregulated by 2,4,6-trinitrochlorobenzene associated with attenuation of skin swelling. Inflamm Res 2017; 66:663-678. [DOI: 10.1007/s00011-017-1048-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 04/04/2017] [Accepted: 04/06/2017] [Indexed: 01/14/2023] Open
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Aragona M, Dekoninck S, Rulands S, Lenglez S, Mascré G, Simons BD, Blanpain C. Defining stem cell dynamics and migration during wound healing in mouse skin epidermis. Nat Commun 2017; 8:14684. [PMID: 28248284 PMCID: PMC5339881 DOI: 10.1038/ncomms14684] [Citation(s) in RCA: 235] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 01/23/2017] [Indexed: 12/15/2022] Open
Abstract
Wound healing is essential to repair the skin after injury. In the epidermis, distinct stem cells (SCs) populations contribute to wound healing. However, how SCs balance proliferation, differentiation and migration to repair a wound remains poorly understood. Here, we show the cellular and molecular mechanisms that regulate wound healing in mouse tail epidermis. Using a combination of proliferation kinetics experiments and molecular profiling, we identify the gene signatures associated with proliferation, differentiation and migration in different regions surrounding the wound. Functional experiments show that SC proliferation, migration and differentiation can be uncoupled during wound healing. Lineage tracing and quantitative clonal analysis reveal that, following wounding, progenitors divide more rapidly, but conserve their homoeostatic mode of division, leading to their rapid depletion, whereas SCs become active, giving rise to new progenitors that expand and repair the wound. These results have important implications for tissue regeneration, acute and chronic wound disorders. Wound healing is essential to repair the skin after injury and distinct stem cells in the epidermis are known to contribute to the process. Here the authors perform molecular, functional and clonal analysis and reveal the individual contribution of stem cells coming from different epidermal compartments to the wound-healing process in mice.
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Affiliation(s)
| | | | - Steffen Rulands
- Cavendish Laboratory, Department of Physics, University of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, UK
| | | | - Guilhem Mascré
- Université Libre de Bruxelles, IRIBHM, Brussels B-1070, Belgium
| | - Benjamin D Simons
- Cavendish Laboratory, Department of Physics, University of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, UK.,The Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QN, UK.,Wellcome Trust-Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge CB2 1QR, UK
| | - Cédric Blanpain
- Université Libre de Bruxelles, IRIBHM, Brussels B-1070, Belgium.,WELBIO, Université Libre de Bruxelles, Brussels B-1070, Belgium
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Besson V, Kyryachenko S, Janich P, Benitah SA, Marazzi G, Sassoon D. Expression Analysis of the Stem Cell Marker Pw1/Peg3 Reveals a CD34 Negative Progenitor Population in the Hair Follicle. Stem Cells 2016; 35:1015-1027. [PMID: 27862634 DOI: 10.1002/stem.2540] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 09/10/2016] [Accepted: 10/16/2016] [Indexed: 12/30/2022]
Abstract
Pw1/Peg3 is a parentally imprinted gene expressed in adult stem cells in every tissue thus far examined including the stem cells of the hair follicle. Using a Pw1/Peg3 reporter mouse, we carried out a detailed dissection of the stem cells in the bulge, which is a major stem cell compartment of the hair follicle in mammalian skin. We observed that PW1/Peg3 expression initiates upon placode formation during fetal development, coincident with the establishment of the bulge stem cells. In the adult, we observed that PW1/Peg3 expression is found in both CD34+ and CD34- populations of bulge stem cells. We demonstrate that both populations can give rise to new hair follicles, reconstitute their niche, and self-renew. These results demonstrate that PW1/Peg3 is a reliable marker of the full population of follicle stem cells and reveal a novel CD34- bulge stem-cell population. Stem Cells 2017;35:1015-1027.
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Affiliation(s)
- Vanessa Besson
- Stem Cells and Regenerative Medicine, Institute of Cardiometabolism and Nutrition (ICAN), UMRS 1166 INSERM, University of Pierre and Marie Curie Paris VI, Paris, France
| | - Sergiy Kyryachenko
- Stem Cells and Regenerative Medicine, Institute of Cardiometabolism and Nutrition (ICAN), UMRS 1166 INSERM, University of Pierre and Marie Curie Paris VI, Paris, France
| | - Peggy Janich
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Salvador A Benitah
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain.,ICREA, Catalan Institution for Research and Advanced Studies, Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - Giovanna Marazzi
- Stem Cells and Regenerative Medicine, Institute of Cardiometabolism and Nutrition (ICAN), UMRS 1166 INSERM, University of Pierre and Marie Curie Paris VI, Paris, France
| | - David Sassoon
- Stem Cells and Regenerative Medicine, Institute of Cardiometabolism and Nutrition (ICAN), UMRS 1166 INSERM, University of Pierre and Marie Curie Paris VI, Paris, France
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37
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Wound-healing markers after autologous and allogeneic epithelial-like stem cell treatment. Cytotherapy 2016; 18:562-9. [PMID: 26971684 DOI: 10.1016/j.jcyt.2016.01.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 01/08/2016] [Accepted: 01/16/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND AIMS Several cytokines and growth factors play an essential role in skin regeneration and epithelial-like stem cells (EpSCs) have beneficial effects on wound healing in horses. However, there are no reports available on the expression of these growth factors and cytokines after EpSC therapy. METHODS Wounds of 6 cm(2) were induced in the gluteus region of 6 horses and treated with (i) autologous EpSCs, (ii) allogeneic EpSCs, (iii) vehicle treatment or (iv) untreated control. Real time polymerase chain reaction was performed on tissue biopsies taken 1 and 5 weeks after these treatments to evaluate mRNA expression of interferon (IFN)-γ, interleukin (IL)-6, vascular endothelial growth factor (VEGF), epidermal growth factor (EGF), insulin-like growth factor (IGF)-1 and epidermal keratin (eKER). RESULTS One week after treatments, mRNA levels of IL-6 (P = 0.012) and VEGF (P = 0.008) were higher in allogeneic EpSC-treated wounds compared with controls. Also, mRNA levels of IGF-1 were higher at 1 week in both autologous (P = 0.027) and allogeneic (P = 0.035) EpSC-treated wounds. At week 5, all EpSC- and vehicle-treated wounds demonstrated significantly higher IFN-γ, VEGF and eKER mRNA expression compared with controls and compared with their respective levels at week 1. CONCLUSIONS Equine wounds treated with allogeneic EpSCs demonstrate a significant increase in mRNA expression of IL-6, VEGF and IGF-1 in the acute phase. In the longer term, an increase in IFN-γ, VEGF and eKER mRNA was detected in the wounds treated with allogenic EpSCs, autologous EpSCs or their vehicle.
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Lawson BAJ, Pettet GJ. Space-Limited Mitosis in the Glazier–Graner–Hogeweg Model. Bull Math Biol 2016; 79:1-20. [DOI: 10.1007/s11538-016-0204-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 09/05/2016] [Indexed: 10/20/2022]
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39
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Augoff K, Taboła R, Kula J, Gosk J, Rutowski R. Epidermal Growth Factor Receptor (EGF-R) in Dupuytren’s Disease. ACTA ACUST UNITED AC 2016; 30:570-3. [PMID: 16055243 DOI: 10.1016/j.jhsb.2005.06.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2004] [Accepted: 06/09/2005] [Indexed: 10/25/2022]
Abstract
The aim of this paper was to examine participation of the epidermal growth factor receptor (EGF-R) signal pathway in the pathogenesis of Dupuytren’s disease. The study showed changes in the ratio of membrane EGF-R to its intracellular level during the different clinical stages of Dupuytren’s contracture progression. Our observations of a high ratio of surface to intracellular EGF-R in the palmar aponeurosis of patients with second degree of Dupuytren’s disease (Iselin’s classification), which was significantly higher than this ratio in control palmar fascia ( P = 0.022), would suggest that EGF-R has a role in the involutional phase of the disease.
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Affiliation(s)
- K Augoff
- Department of Traumatic Surgery and Hand Surgery, Medical University, Wrocław, Poland.
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Castro-Muñozledo F, Meza-Aguilar DG, Domínguez-Castillo R, Hernández-Zequinely V, Sánchez-Guzmán E. Vimentin as a Marker of Early Differentiating, Highly Motile Corneal Epithelial Cells. J Cell Physiol 2016; 232:818-830. [DOI: 10.1002/jcp.25487] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 07/11/2016] [Indexed: 01/03/2023]
Affiliation(s)
- Federico Castro-Muñozledo
- Department of Cell Biology; Centro de Investigación y de Estudios Avanzados del IPN; México City Mexico
| | - Diana G. Meza-Aguilar
- Department of Cell Biology; Centro de Investigación y de Estudios Avanzados del IPN; México City Mexico
| | - Rocío Domínguez-Castillo
- Department of Molecular Biomedicine; Centro de Investigación y de Estudios Avanzados del IPN; México City Mexico
| | | | - Erika Sánchez-Guzmán
- Department of Cell Biology; Centro de Investigación y de Estudios Avanzados del IPN; México City Mexico
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Comparative Analysis of KnockOut™ Serum with Fetal Bovine Serum for the In Vitro Long-Term Culture of Human Limbal Epithelial Cells. J Ophthalmol 2016; 2016:7304812. [PMID: 27446607 PMCID: PMC4944074 DOI: 10.1155/2016/7304812] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 06/02/2016] [Accepted: 06/02/2016] [Indexed: 11/25/2022] Open
Abstract
The limbal epithelial cells can be maintained on 3T3 feeder layer with fetal bovine serum supplemented culture medium, and these cells have been used to successfully treat limbal stem cell deficiency. However, fetal bovine serum contains unknown components and displays quantitative and qualitative lot-to-lot variations. To improve the culture condition, the defined KnockOut serum replacement was investigated to replace fetal bovine serum for culturing human limbal epithelial cell. Human primary limbal epithelial cells were cultured in KnockOut serum and fetal bovine serum supplemented medium, respectively. The cell growth rate, gene expression, and maintenance of limbal epithelial stem cells were studied and compared between these two groups. Human primary limbal epithelial cells were isolated and successfully serially cultivated in this novel KnockOut serum supplemented medium; the cell proliferation and stem cell maintenance were similar to those of cells grown in fetal bovine serum supplemented medium. These data suggests that this KnockOut serum supplemented medium is an efficient replacement to traditional fetal bovine serum supplemented medium for limbal epithelial cell culture, and this medium has great potential for long term maintenance of limbal epithelial cells, limbal epithelial stem cells transplantation, and tissue regeneration.
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Islam MR, Yamagami K, Yoshii Y, Yamauchi N. Growth factor induced proliferation, migration, and lumen formation of rat endometrial epithelial cells in vitro. J Reprod Dev 2016; 62:271-8. [PMID: 26946922 PMCID: PMC4919291 DOI: 10.1262/jrd.2015-158] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 02/13/2016] [Indexed: 12/11/2022] Open
Abstract
Endometrial modulation is essential for the preservation of normal uterine physiology, and this modulation is driven by a number of growth factors. The present study investigated the mitogenic, motogenic, and morphogenic effects of epidermal growth factor (EGF) and hepatocyte growth factor (HGF) on rat endometrial epithelial (REE) cells. The REE cells were isolated and cultured and then characterized based on their morphology and their expression of epithelial cell markers. The MTT assay revealed that EGF and HGF induce proliferation of REE cells. Consistent with increased proliferation, we found that the cell cycle regulatory factor Cyclin D1 was also upregulated upon EGF and HGF addition. REE cell migration was prompted by EGF, as observed with the Oris Cell Migration Assay. The morphogenic impact of growth factors on REE cells was studied in a three-dimensional BD Matrigel cell culture system, wherein these growth factors also increased the frequency of lumen formation. In summary, we show that EGF and HGF have a stimulatory effect on REE cells, promoting proliferation, cell migration, and lumen formation. Our findings provide important insights that further the understanding of endometrial regeneration and its regulation.
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Affiliation(s)
- Md Rashedul Islam
- Department of Animal and Marine Bioresource Sciences, Faculty of Agriculture, Kyushu University, Fukuoka 812-8581, Japan
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Kanapathy M, Hachach-Haram N, Bystrzonowski N, Harding K, Mosahebi A, Richards T. Epidermal grafting versus split-thickness skin grafting for wound healing (EPIGRAAFT): study protocol for a randomised controlled trial. Trials 2016; 17:245. [PMID: 27185033 PMCID: PMC4869340 DOI: 10.1186/s13063-016-1352-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Accepted: 04/12/2016] [Indexed: 12/02/2022] Open
Abstract
Background Split-thickness skin grafting (SSG) is an important modality for wound closure. However, the donor site becomes a second, often painful wound, which may take more time to heal than the graft site itself and holds the risk of infection and scarring. Epidermal grafting (EG) is an alternative method of autologous skin grafting that harvests only the epidermal layer of the skin by applying continuous negative pressure on the normal skin to raise blisters. This procedure has minimal donor site morbidity and is relatively pain-free, allowing autologous skin grafting in an outpatient setting. We plan to compare EG to SSG and to further investigate the cellular mechanism by which each technique achieves wound healing. Methods/design EPIGRAAFT is a multicentre, randomised, controlled trial that compares the efficacy and wound-healing mechanism of EG with SSG for wound healing. The primary outcome measures are the proportion of wounds healed in 6 weeks and the donor site healing time. The secondary outcome measures include the mean time for complete wound healing, pain score, patient satisfaction, health care utilisation, cost analysis, and incidence of adverse events. Discussion This study is expected to define the efficacy of EG and promote further understanding of the mechanism of wound healing by EG compared to SSG. The results of this study can be used to inform the current best practise for wound care. Trial registration Clinicaltrials.gov identifier, NCT02535481. Registered on 11 August 2015. Electronic supplementary material The online version of this article (doi:10.1186/s13063-016-1352-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Muholan Kanapathy
- Division of Surgery & Interventional Science, University College London, London, UK.,Royal Free Hospital Wound Healing Group, Department of Plastic and Reconstructive Surgery, The Royal Free Hospital, London, UK
| | - Nadine Hachach-Haram
- Royal Free Hospital Wound Healing Group, Department of Plastic and Reconstructive Surgery, The Royal Free Hospital, London, UK
| | - Nicola Bystrzonowski
- Royal Free Hospital Wound Healing Group, Department of Plastic and Reconstructive Surgery, The Royal Free Hospital, London, UK
| | - Keith Harding
- Cardiff University, Wound Healing Research Unit, School of Medicine, Heath Park, Cardiff, UK
| | - Afshin Mosahebi
- Division of Surgery & Interventional Science, University College London, London, UK. .,Royal Free Hospital Wound Healing Group, Department of Plastic and Reconstructive Surgery, The Royal Free Hospital, London, UK.
| | - Toby Richards
- Division of Surgery & Interventional Science, University College London, London, UK.,Royal Free Hospital Wound Healing Group, Department of Plastic and Reconstructive Surgery, The Royal Free Hospital, London, UK
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Epithelial cell migration requires the interaction between the vimentin and keratin intermediate filaments. Sci Rep 2016; 6:24389. [PMID: 27072292 PMCID: PMC4829867 DOI: 10.1038/srep24389] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 03/29/2016] [Indexed: 11/08/2022] Open
Abstract
Epithelial migration plays a central role in development, wound repair and tumor metastasis, but the role of intermediate filament in this important event is unknown. We showed recently that vimentin coexists in the same cell with keratin-KRT14 at the leading edge of the migrating epidermal cells, and knockdown of vimentin impaired colony growth. Here we demonstrate that vimentin co-localizes and co-immunoprecipitates with keratin-KRT14, and mutations in the -YRKLLEGEE- sequence of vimentin significantly reduced migration of the keratinocytes. Our data demonstrates that keratinocyte migration requires the interaction between vimentin and keratins at the -YRKLLEGEE- sequence at the helical 2B domain of vimentin. These findings have broad implications for understanding the roles of vimentin intermediate filaments in normal and neoplastic epithelial cells.
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45
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Hachach-Haram N, Bystrzonowski N, Kanapathy M, Smith O, Harding K, Mosahebi A, Richards T. A prospective, multicentre study on the use of epidermal grafts to optimise outpatient wound management. Int Wound J 2016; 14:241-249. [PMID: 26997204 DOI: 10.1111/iwj.12595] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 02/24/2016] [Indexed: 11/29/2022] Open
Abstract
Current wound management through the use of a split-thickness skin graft often requires hospital admission, a period of immobility, attentive donor site wound care and pain management. This study evaluates the feasibility of using a novel epidermal graft-harvesting device (CelluTome) that allows pain-free epidermal skin grafting in the outpatient clinic setting. A prospective series of 35 patients was performed in 2 centres, involving 10 acute and 25 chronic wounds. All patients were subjected to epidermal grafting in the outpatient specialist clinic, without the use of anaesthesia, and allowed to return home after the procedure. Completely healed wounds were noted in 22 patients (62·9%). The overall mean time for 50% and 100% reduction in wound size was 3·31 ± 2·33 and 5·91 ± 3·48 weeks, respectively. There was no significant difference in healing times between the acute and chronic wounds (50% reduction in wound size; acute 2·20 ± 0·91 weeks versus chronic 3·73 ± 2·63 weeks, P = 0·171. Hundred percent reduction in wound size; acute 4·80 ± 1·61 weeks versus chronic 6·83 ± 4·47 weeks, P = 0·183). The mean time for donor site healing was 5·49 ± 1·48 days. The mean pain score during graft harvest was 1·42 ± 0·95, and the donor site Vancouver Scar Scale was 0 for all cases at 6 weeks. This automated device offers autologous skin harvesting in the outpatient setting with minimal or no pain and a scar free donor site, equally benefiting both the acute and chronic wounds. It has the potential to save NHS resources by eliminating the need for theatre space and a hospital bed while at the same time benefiting patient care.
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Affiliation(s)
- Nadine Hachach-Haram
- Royal Free Hospital Wound Healing Group, Department of Plastic and Reconstructive Surgery, The Royal Free Hospital, London, UK
| | - Nicola Bystrzonowski
- Royal Free Hospital Wound Healing Group, Department of Plastic and Reconstructive Surgery, The Royal Free Hospital, London, UK
| | - Muholan Kanapathy
- Royal Free Hospital Wound Healing Group, Department of Plastic and Reconstructive Surgery, The Royal Free Hospital, London, UK
| | - Oliver Smith
- Royal Free Hospital Wound Healing Group, Department of Plastic and Reconstructive Surgery, The Royal Free Hospital, London, UK
| | - Keith Harding
- Wound Healing Research Unit, School of Medicine, Cardiff University, Cardiff, UK
| | - Ash Mosahebi
- Royal Free Hospital Wound Healing Group, Department of Plastic and Reconstructive Surgery, The Royal Free Hospital, London, UK
| | - Toby Richards
- Royal Free Hospital Wound Healing Group, Department of Plastic and Reconstructive Surgery, The Royal Free Hospital, London, UK
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46
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Theunissen D, Seymour B, Forder M, Cox SG, Rode H. Measurements in wound healing with observations on the effects of topical agents on full thickness dermal incised wounds. Burns 2016; 42:556-63. [PMID: 26899619 DOI: 10.1016/j.burns.2015.09.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 05/29/2015] [Accepted: 09/19/2015] [Indexed: 10/22/2022]
Abstract
INTRODUCTION A multitude of topical wound treatments are used today. Although it is well established that the micro-environment of healing wounds can be altered to improve healing, it is difficult to measure the subtle differences in outcome where therapies are compared. METHOD We compared wound healing properties between four different topical agents in surgically incised wounds in a pig model. The four topical agents, 5% Povidone-Iodine cream, 1% Silver-Sulphadiazine, 2% Mupirocin, and 1% Silver-Sulphadiazine plus 1mg/100g recombinant-human epithelial growth factor (EGF) were randomly assigned to four test animals each. Test agents were compared to each other and to untreated controls. We investigated existing and new methodologies of measurement of wound healing: clinical and histological visual scoring systems, immuno-histochemistry, and computerized image analysis of the wounds on days 3, 7, and 28. RESULTS All agents were found to have improved healing rates with better cellular architecture. Healing was faster, histological appearance resembled normal architecture sooner, clinical appearance improved, mitotic activity was stimulated and more collagen was deposited in comparison to the wounds with no agents. EGF-treated wounds showed an increased rate of epithelisation, but the rate of healing did not correlate well with evaluation of cosmetic outcome. CONCLUSION Topical agents improve all aspects of wound healing. The addition of a human recombinant EGF to Silver-Sulphadiazine increases epithelial growth and amounts of collagen in the regenerating wounds at day 7.
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Affiliation(s)
- D Theunissen
- Department of Paediatric Surgery, Red Cross War Memorial Children's Hospital, University of Cape Town, South Africa
| | - B Seymour
- Department of Anatomical Pathology, Groote Schuur Hospital, NHLS, University of Cape Town, South Africa
| | - M Forder
- Department of Anatomical Pathology, Groote Schuur Hospital, NHLS, University of Cape Town, South Africa
| | - S G Cox
- Department of Paediatric Surgery, Red Cross War Memorial Children's Hospital, University of Cape Town, South Africa
| | - H Rode
- Department of Paediatric Surgery, Red Cross War Memorial Children's Hospital, University of Cape Town, South Africa.
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Lu Y, Huang J, Yu G, Cardenas R, Wei S, Wujcik EK, Guo Z. Coaxial electrospun fibers: applications in drug delivery and tissue engineering. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2016; 8:654-77. [DOI: 10.1002/wnan.1391] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Revised: 11/28/2015] [Accepted: 12/27/2015] [Indexed: 12/15/2022]
Affiliation(s)
- Yang Lu
- Materials Engineering and Nanosensor (MEAN) Laboratory, Dan F. Smith Department of Chemical EngineeringLamar UniversityBeaumontTXUSA
| | - Jiangnan Huang
- Integrated Composites Laboratory (ICL), Department of Chemical and Biomolecular EngineeringThe University of TennesseeKnoxvilleTNUSA
| | - Guoqiang Yu
- Materials Engineering and Nanosensor (MEAN) Laboratory, Dan F. Smith Department of Chemical EngineeringLamar UniversityBeaumontTXUSA
| | - Romel Cardenas
- Materials Engineering and Nanosensor (MEAN) Laboratory, Dan F. Smith Department of Chemical EngineeringLamar UniversityBeaumontTXUSA
| | - Suying Wei
- Department of Chemistry and BiochemistryLamar UniversityBeaumontTXUSA
| | - Evan K. Wujcik
- Materials Engineering and Nanosensor (MEAN) Laboratory, Dan F. Smith Department of Chemical EngineeringLamar UniversityBeaumontTXUSA
| | - Zhanhu Guo
- Integrated Composites Laboratory (ICL), Department of Chemical and Biomolecular EngineeringThe University of TennesseeKnoxvilleTNUSA
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48
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Roshan A, Murai K, Fowler J, Simons BD, Nikolaidou-Neokosmidou V, Jones PH. Human keratinocytes have two interconvertible modes of proliferation. Nat Cell Biol 2016; 18:145-56. [PMID: 26641719 PMCID: PMC4872834 DOI: 10.1038/ncb3282] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 11/05/2015] [Indexed: 02/08/2023]
Abstract
Single stem cells, including those in human epidermis, have a remarkable ability to reconstitute tissues in vitro, but the cellular mechanisms that enable this are ill-defined. Here we used live imaging to track the outcome of thousands of divisions in clonal cultures of primary human epidermal keratinocytes. Two modes of proliferation were seen. In 'balanced' mode, similar proportions of proliferating and differentiating cells were generated, achieving the 'population asymmetry' that sustains epidermal homeostasis in vivo. In 'expanding' mode, an excess of cycling cells was produced, generating large expanding colonies. Cells in expanding mode switched their behaviour to balanced mode once local confluence was attained. However, when a confluent area was wounded in a scratch assay, cells near the scratch switched back to expanding mode until the defect was closed. We conclude that the ability of a single epidermal stem cell to reconstitute an epithelium is explained by two interconvertible modes of proliferation regulated by confluence.
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Affiliation(s)
- Amit Roshan
- MRC Cancer Unit, University of Cambridge, Hutchison/MRC Research Centre, Box 197, Cambridge Biomedical Campus, Cambridge, United Kingdom CB2 0XZ
- Present address: Norfolk & Norwich University Hospital, Colney Lane, Norwich, United Kingdom NR4 7UY
| | - Kasumi Murai
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, United Kingdom CB10 1SA
| | - Joanna Fowler
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, United Kingdom CB10 1SA
| | - Benjamin D Simons
- Cavendish Laboratory, TCM, University of Cambridge, JJ Thomson Avenue, Cambridge, United Kingdom CB3 0HE
- Wellcome Trust/Cancer Research UK Gurdon Institute, The Henry Wellcome Building of Cancer and Developmental Biology, University of Cambridge, Tennis Court Road Cambridge, United Kingdom CB2 1QN
| | - Varvara Nikolaidou-Neokosmidou
- MRC Cancer Unit, University of Cambridge, Hutchison/MRC Research Centre, Box 197, Cambridge Biomedical Campus, Cambridge, United Kingdom CB2 0XZ
| | - Philip H Jones
- MRC Cancer Unit, University of Cambridge, Hutchison/MRC Research Centre, Box 197, Cambridge Biomedical Campus, Cambridge, United Kingdom CB2 0XZ
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, United Kingdom CB10 1SA
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49
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Kim YH, Kim DH, Shin EJ, Lee HJ, Wee WR, Jeon S, Kim MK. Comparative Analysis of Substrate-Free Cultured Oral Mucosal Epithelial Cell Sheets from Cells of Subjects with and without Stevens-Johnson Syndrome for Use in Ocular Surface Reconstruction. PLoS One 2016; 11:e0147548. [PMID: 26808056 PMCID: PMC4726561 DOI: 10.1371/journal.pone.0147548] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 01/04/2016] [Indexed: 11/20/2022] Open
Abstract
Purpose To compare the regenerative potential of cultured oral mucosal epithelial cells sheets (COMECs) from Stevens-Johnson syndrome (SJS) subjects with those from non-SJS subjects. Methods Human oral mucosal epithelial cells from SJS and non-SJS subjects were cultured, and colony-forming efficiency (CFE), proliferative and migration potential, expression of cytokines/growth factors and stem cells were compared. COMECs from SJS and non-SJS subjects were transplanted into 12 limbal stem cell-deficient rabbits, and their regenerative potential was analyzed at 1 week after transplantation. Results CFE (p>0.05, student’s t test), cell proliferation potential (p>0.05, two-way ANOVA) and expression of the cytokeratins (K3, K4, K13, K19) in the oral mucosal epithelial cells from SJS subjects were similar to those of the cells from non-SJS subjects. The initial migratory potential of SJS cells was delayed compared to that of non-SJS cells (p <0.05, RM two-way ANOVA). The SJS cells expressed lower levels of EGF and higher levels of VEGF compared to that of non-SJS cells (p<0.05, one-way ANOVA). In vivo transplanted SJS-COMECs showed similar expression of K3, K4, and K13, proliferation markers (Ki-67; p>0.05, Mann-Whitney U test), and stem cell markers (p63; p>0.05, Mann-Whitney U test) compared to non-SJS COMECs. The initial epithelial defects in vivo were larger in the eyes treated with SJS-COMECs on day 3 (p<0.01, RM two-way ANOVA), but no differences were observed by day 7 between SJS- and non-SJS-COMECs. Conclusions These results suggest that, aside from differences in migratory potential, oral mucosal epithelial cells from SJS and non-SJS subjects are comparable in their regeneration potential in treating limbal stem cell deficiency.
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Affiliation(s)
- Yun Hee Kim
- Cutigen Research Institute, Tego Science Inc., Seoul, Korea
| | - Dong Hyun Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Laboratory of Corneal Regenerative Medicine and Ocular Immunology, Seoul Artificial Eye Center, Seoul National University Hospital Biomedical Research Institute, Seoul, Korea
| | - Eun Jung Shin
- Cutigen Research Institute, Tego Science Inc., Seoul, Korea
| | - Hyun Ju Lee
- Laboratory of Corneal Regenerative Medicine and Ocular Immunology, Seoul Artificial Eye Center, Seoul National University Hospital Biomedical Research Institute, Seoul, Korea
| | - Won Ryang Wee
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Laboratory of Corneal Regenerative Medicine and Ocular Immunology, Seoul Artificial Eye Center, Seoul National University Hospital Biomedical Research Institute, Seoul, Korea
| | - Saewha Jeon
- Cutigen Research Institute, Tego Science Inc., Seoul, Korea
- * E-mail: (MKK); (SJ)
| | - Mee Kum Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Laboratory of Corneal Regenerative Medicine and Ocular Immunology, Seoul Artificial Eye Center, Seoul National University Hospital Biomedical Research Institute, Seoul, Korea
- * E-mail: (MKK); (SJ)
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Hachach-Haram N, Bystrzonowski N, Kanapathy M, Edmondson SJ, Twyman L, Richards T, Mosahebi A. The use of epidermal grafting for the management of acute wounds in the outpatient setting. J Plast Reconstr Aesthet Surg 2015; 68:1317-8. [PMID: 26113275 DOI: 10.1016/j.bjps.2015.04.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Revised: 04/19/2015] [Accepted: 04/26/2015] [Indexed: 11/17/2022]
Affiliation(s)
| | | | - Muholan Kanapathy
- The Royal Free Hospital, Pond Street, London, NW3 2QG, United Kingdom
| | | | - Lucy Twyman
- The Royal Free Hospital, Pond Street, London, NW3 2QG, United Kingdom
| | - Toby Richards
- The Royal Free Hospital, Pond Street, London, NW3 2QG, United Kingdom
| | - Afshin Mosahebi
- The Royal Free Hospital, Pond Street, London, NW3 2QG, United Kingdom
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