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Akl MA, Eldeen MA, Kassem AM. Beyond Skin Deep: Phospholipid-Based Nanovesicles as Game-Changers in Transdermal Drug Delivery. AAPS PharmSciTech 2024; 25:184. [PMID: 39138693 DOI: 10.1208/s12249-024-02896-6] [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: 04/28/2024] [Accepted: 07/15/2024] [Indexed: 08/15/2024] Open
Abstract
Transdermal administration techniques have gained popularity due to their advantages over oral and parenteral methods. Noninvasive, self-administered delivery devices improve patient compliance and control drug release. Transdermal delivery devices struggle with the skin's barrier function. Molecules over 500 Dalton (Da) and ionized compounds don't permeate through the skin. Drug encapsulation in phospholipid-based vesicular systems is the most effective skin delivery technique. Vesicular carriers include bi-layered liposomes, ultra-deformable liposomes, ethanolic liposomes, transethosomes, and invasomes. These technologies enhance skin drug permeation by increasing formula solubilization, partitioning into the skin, and fluidizing the lipid barrier. Phospholipid-based delivery systems are safe and efficient, making them a promising pharmaceutical and cosmeceutical drug delivery technique. Still, making delivery systems requires knowledge about the physicochemical properties of the drug and carrier, manufacturing and process variables, skin delivery mechanisms, technological advances, constraints, and regulatory requirements. Consequently, this review covers recent research achievements addressing the mentioned concerns.
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Affiliation(s)
- Mohamed A Akl
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, Cairo, Egypt.
- Department of Pharmaceutics, College of Pharmacy, The Islamic University, Najaf, 54001, Iraq.
| | - Muhammad Alaa Eldeen
- Cell Biology, Histology, & Genetics Division, Zoology Department, Faculty of Science, Zagazig University, Alsharquia, 7120001, Egypt
| | - Abdulsalam M Kassem
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, Cairo, Egypt.
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2
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Estrach S, Vivier CM, Féral CC. ECM and epithelial stem cells: the scaffold of destiny. Front Cell Dev Biol 2024; 12:1359585. [PMID: 38572486 PMCID: PMC10987781 DOI: 10.3389/fcell.2024.1359585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 03/08/2024] [Indexed: 04/05/2024] Open
Abstract
Adult stem cells play a critical role in maintaining tissue homeostasis and promoting longevity. The intricate organization and presence of common markers among adult epithelial stem cells in the intestine, lung, and skin serve as hallmarks of these cells. The specific location pattern of these cells within their respective organs highlights the significance of the niche in which they reside. The extracellular matrix (ECM) not only provides physical support but also acts as a reservoir for various biochemical and biophysical signals. We will consider differences in proliferation, repair, and regenerative capacities of the three epithelia and review how environmental cues emerging from the niche regulate cell fate. These cues are transduced via mechanosignaling, regulating gene expression, and bring us to the concept of the fate scaffold. Understanding both the analogies and discrepancies in the mechanisms that govern stem cell fate in various organs can offer valuable insights for rejuvenation therapy and tissue engineering.
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Affiliation(s)
- Soline Estrach
- INSERM, CNRS, IRCAN, Université Côte d’Azur, Nice, France
| | | | - Chloé C. Féral
- INSERM, CNRS, IRCAN, Université Côte d’Azur, Nice, France
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3
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McClure CR, Patel R, Hallem EA. Invade or die: behaviours and biochemical mechanisms that drive skin penetration in Strongyloides and other skin-penetrating nematodes. Philos Trans R Soc Lond B Biol Sci 2024; 379:20220434. [PMID: 38008119 PMCID: PMC10676818 DOI: 10.1098/rstb.2022.0434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 04/05/2023] [Indexed: 11/28/2023] Open
Abstract
Skin-penetrating nematodes, including the human threadworm Strongyloides stercoralis and hookworms in the genera Necator and Ancylostoma, are gastrointestinal parasites that are a major cause of neglected tropical disease in low-resource settings worldwide. These parasites infect hosts as soil-dwelling infective larvae that navigate towards hosts using host-emitted sensory cues such as odorants and body heat. Upon host contact, they invade the host by penetrating through the skin. The process of skin penetration is critical for successful parasitism but remains poorly understood and understudied. Here, we review current knowledge of skin-penetration behaviour and its underlying mechanisms in the human parasite S. stercoralis, the closely related rat parasite Strongyloides ratti, and other skin-penetrating nematodes such as hookworms. We also highlight important directions for future investigations into this underexplored process and discuss how recent advances in molecular genetic and genomic tools for Strongyloides species will enable mechanistic investigations of skin penetration and other essential parasitic behaviours in future studies. This article is part of the Theo Murphy meeting issue 'Strongyloides: omics to worm-free populations'.
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Affiliation(s)
- Courtney R. McClure
- Molecular Toxicology Interdepartmental PhD Program, University of California, Los Angeles, CA 90095, USA
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, CA 90095, USA
| | - Ruhi Patel
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, CA 90095, USA
| | - Elissa A. Hallem
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, CA 90095, USA
- Molecular Biology Institute, University of California, Los Angeles, CA 90095, USA
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Zhu Y, Wang K, Jia X, Fu C, Yu H, Wang Y. Antioxidant peptides, the guardian of life from oxidative stress. Med Res Rev 2024; 44:275-364. [PMID: 37621230 DOI: 10.1002/med.21986] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 08/01/2023] [Accepted: 08/06/2023] [Indexed: 08/26/2023]
Abstract
Reactive oxygen species (ROS) are produced during oxidative metabolism in aerobic organisms. Under normal conditions, ROS production and elimination are in a relatively balanced state. However, under internal or external environmental stress, such as high glucose levels or UV radiation, ROS production can increase significantly, leading to oxidative stress. Excess ROS production not only damages biomolecules but is also closely associated with the pathogenesis of many diseases, such as skin photoaging, diabetes, and cancer. Antioxidant peptides (AOPs) are naturally occurring or artificially designed peptides that can reduce the levels of ROS and other pro-oxidants, thus showing great potential in the treatment of oxidative stress-related diseases. In this review, we discussed ROS production and its role in inducing oxidative stress-related diseases in humans. Additionally, we discussed the sources, mechanism of action, and evaluation methods of AOPs and provided directions for future studies on AOPs.
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Affiliation(s)
- Yiyun Zhu
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Kang Wang
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Xinyi Jia
- National University of Singapore (Suzhou) Research Institute, Suzhou, Jiangsu, China
- Department of Food Science and Technology, Food Science and Technology Center, National University of Singapore, Singapore, Singapore
| | - Caili Fu
- National University of Singapore (Suzhou) Research Institute, Suzhou, Jiangsu, China
| | - Haining Yu
- Department of Bioscience and Biotechnology, Dalian University of Technology, Dalian, Liaoning, China
| | - Yipeng Wang
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
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5
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Ibáñez-Cortés M, Martín-Piedra MÁ, Blanco-Elices C, García-García ÓD, España-López A, Fernández-Valadés R, Sánchez-Quevedo MDC, Alaminos M, Chato-Astrain J, Garzón I. Histological characterization of the human masticatory oral mucosa. A histochemical and immunohistochemical study. Microsc Res Tech 2023; 86:1712-1724. [PMID: 37650503 DOI: 10.1002/jemt.24398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/19/2023] [Accepted: 08/06/2023] [Indexed: 09/01/2023]
Abstract
BACKGROUND Histology of human oral mucosa is closely related with its function and anatomical location, and a proper characterization of the human masticatory oral mucosa could be very useful in periodontal pathology. OBJECTIVE In the present work, we have carried out a comprehensive study in order to determine the main histological features of parakeratinized (POM) and orthokeratinized (OOM) masticatory human oral mucosa using light and electron microscopy. METHODS To perform this, we have used several histological, histochemical and immunohistochemical methods to detect key markets at the epithelial, basement membrane and connective tissue levels. RESULTS Our results demonstrated that POM and OOM share many histological similarities, as expected. However, important differences were observed at the epithelial layer of POM, that was significantly thicker than the epithelial layer found in OOM, especially due to a higher number of cells at the stratum spinosum. The expression pattern of CK10 and filaggrin revealed intense signal expression in OOM as compared to POM. Collagen and proteoglycans were more abundant in OOM stroma than in POM. No differences were found for blood vessels and basement membrane. CONCLUSION These results may contribute to a better understanding of the pathological conditions affecting the human masticatory oral mucosa. In addition, these findings could be useful for the generation of different types of oral mucosa by tissue engineering techniques. RESEARCH HIGHLIGHTS Microscopical features of parakeratinized and orthokeratinized masticatory human oral mucosa showed important differences at both, epithelial and stromal levels. Parakeratinized masticatory human oral mucosa exert thicker epithelial layer, especially, at the stratum spinosum in comparison to orthokeratinized human oral mucosa. Cytokeratin 10 and filaggrin human epithelial markers were intensively expressed in orthokeratinized masticatory human oral mucosa in comparison to parakeratinized masticatory human oral mucosa. At the stromal level, orthokeratinized masticatory human oral mucosa exhibit higher levels of collagen and proteoglycans than parakeratinized masticatory oral mucosa. The deep knowledge of histological features of masticatory oral mucosa could lead to a better understanding of oral mucosa pathology and advanced treatments.
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Affiliation(s)
- Miguel Ibáñez-Cortés
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Doctoral Program in Biomedicine, University of Granada, Granada, Spain
| | - Miguel Ángel Martín-Piedra
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Granada, Spain
| | - Cristina Blanco-Elices
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Granada, Spain
| | - Óscar Darío García-García
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Granada, Spain
| | - Antonio España-López
- Craniofacial Malformations and Cleft Lip and Palate Management Unit, University Hospital Virgen de las Nieves, Granada, Spain
| | - Ricardo Fernández-Valadés
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Granada, Spain
- Division of Pediatric Surgery, University Hospital Virgen de las Nieves, Granada, Spain
| | - María Del Carmen Sánchez-Quevedo
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Granada, Spain
| | - Miguel Alaminos
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Granada, Spain
| | - Jesús Chato-Astrain
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Granada, Spain
| | - Ingrid Garzón
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Granada, Spain
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Yu K, Gao Q, Xu J, Liu L, Qi L, Guan Y, Yao Y, Chen F, Zhang P, Liu Y, Lu L. Computational investigation of a 3D-printed skin substitute with orthotropy in mechanical property. Comput Biol Med 2023; 166:107536. [PMID: 37801921 DOI: 10.1016/j.compbiomed.2023.107536] [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: 05/11/2023] [Revised: 09/18/2023] [Accepted: 09/27/2023] [Indexed: 10/08/2023]
Abstract
As a promising treatment for third-degree burns, grafting with bioengineering skin substitutes shows a capability to overcome the deficiency of donor skin. Similar mechanical properties with human skin are required for employed skin substitutes to avoid secondary damage to patients. Given the representativeness of orthotropy in mechanical properties, there is a need for developing orthotropic skin substitutes. This paper presents computational investigation as well as structural design for the fabrication of orthotropic skin substitutes. A finite element method (FEM) based mechanics simulation model for analyzing the stress field in the skin substitute was developed, by which the stress distribution in mimetic structures of the epidermis and dermis can be acquired. Moreover, the equation of Young's modulus was deduced based on the simulation result, which expressed the mechanical property of designed skin substitutes. Furthermore, several structures of skin substitutes were proposed and their calculated Young's modulus ranged from 21.87 kPa to 213.32 kPa, which was similar to the human skin. Ultimately, uniaxial tensile tests were performed for three types of 3D-printed orthotropic skin substitutes, which validates the feasibility to regulate Young's modulus by regulating the structure of fabricated skin substitutes.
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Affiliation(s)
- Kaicheng Yu
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China; Chongqing Research Institute of HIT, Chongqing 400000, China.
| | - Qiang Gao
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China; Chongqing Research Institute of HIT, Chongqing 400000, China.
| | - Jingfeng Xu
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China; Chongqing Research Institute of HIT, Chongqing 400000, China.
| | - Liang Liu
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China; Chongqing Research Institute of HIT, Chongqing 400000, China.
| | - Lizi Qi
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China; Chongqing Research Institute of HIT, Chongqing 400000, China.
| | - Yuheng Guan
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China; Chongqing Research Institute of HIT, Chongqing 400000, China.
| | - Yifeng Yao
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China; Chongqing Research Institute of HIT, Chongqing 400000, China.
| | - Fangzheng Chen
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China; Chongqing Research Institute of HIT, Chongqing 400000, China.
| | - Peng Zhang
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China; Chongqing Research Institute of HIT, Chongqing 400000, China.
| | - YongDan Liu
- Department of Neurology, The Hospital of Heilongjiang Province, Harbin 150036, China.
| | - Lihua Lu
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China; Chongqing Research Institute of HIT, Chongqing 400000, China.
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7
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Lin M, Bao C, Chen L, Geng S, Wang H, Xiao Z, Gong T, Ji C, Cheng B. Tremella fuciformis polysaccharides alleviates UV-provoked skin cell damage via regulation of thioredoxin interacting protein and thioredoxin reductase 2. Photochem Photobiol Sci 2023; 22:2285-2296. [PMID: 37458972 DOI: 10.1007/s43630-023-00450-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 06/11/2023] [Indexed: 09/21/2023]
Abstract
INTRODUCTION Skin is exposed to a wide range of environmental risk factors including ultraviolet (UV) and all kinds of pollutants. Excessive UV exposure contributes to many disorders, such as photoaging, skin inflammation, and carcinogenesis. Previous studies have shown that Tremella fuciformis polysaccharides (TFPS) have protective effects on oxidative stress in cells, but the specific protective mechanism has not been clarified. METHODS To determine the effects of TFPS on UV-irritated human skin, we conducted a variety of studies, including Cell Counting Kit-8 (CCK-8), trypan blue, Western blot, apoptosis assays, reactive oxygen species (ROS) detection in primary skin keratinocytes, and chronic UV-irradiated mouse model. RESULTS We first determined that TFPS protects human skin keratinocytes against UV radiation-induced apoptosis and ROS production. Moreover, TFPS regulates thioredoxin interacting protein (TXNIP) and thioredoxin reductase 2 (TXNRD2) levels in primary skin keratinocytes for photoprotection. Last, we found that topical TFPS treatment could alleviate the UV-induced skin damage in chronic UV-irradiated mouse model. CONCLUSION Collectively, our work indicates the beneficial role of TFPS in UV-induced skin cell damage and provides a novel therapeutic reagent to prevent or alleviate the progress of photoaging and other UV-provoked skin diseases.
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Affiliation(s)
- Mengting Lin
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, 20 Chazhong Road, Fuzhou, Fujian, 350000, China
- Fujian Dermatology and Venereology Research Institute, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Key Laboratory of Skin Cancer of Fujian Higher Education Institutions, The First Affiliated Hospital, Fujian Medical University, Fuzhou, 350000, China
| | - Chengbei Bao
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, 20 Chazhong Road, Fuzhou, Fujian, 350000, China
- Fujian Dermatology and Venereology Research Institute, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Key Laboratory of Skin Cancer of Fujian Higher Education Institutions, The First Affiliated Hospital, Fujian Medical University, Fuzhou, 350000, China
| | - Lihong Chen
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, 20 Chazhong Road, Fuzhou, Fujian, 350000, China
- Fujian Dermatology and Venereology Research Institute, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Key Laboratory of Skin Cancer of Fujian Higher Education Institutions, The First Affiliated Hospital, Fujian Medical University, Fuzhou, 350000, China
| | - Shiling Geng
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, 20 Chazhong Road, Fuzhou, Fujian, 350000, China
- Fujian Dermatology and Venereology Research Institute, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Key Laboratory of Skin Cancer of Fujian Higher Education Institutions, The First Affiliated Hospital, Fujian Medical University, Fuzhou, 350000, China
| | - Haiqing Wang
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, 20 Chazhong Road, Fuzhou, Fujian, 350000, China
- Fujian Dermatology and Venereology Research Institute, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Key Laboratory of Skin Cancer of Fujian Higher Education Institutions, The First Affiliated Hospital, Fujian Medical University, Fuzhou, 350000, China
| | - Zhixun Xiao
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, 20 Chazhong Road, Fuzhou, Fujian, 350000, China
- Fujian Dermatology and Venereology Research Institute, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Key Laboratory of Skin Cancer of Fujian Higher Education Institutions, The First Affiliated Hospital, Fujian Medical University, Fuzhou, 350000, China
| | - Ting Gong
- Central Laboratory, The First Affiliated Hospital of Fujian Medical University, 20 Chazhong Road, Fuzhou, Fujian, 350000, China
| | - Chao Ji
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, 20 Chazhong Road, Fuzhou, Fujian, 350000, China.
- Fujian Dermatology and Venereology Research Institute, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China.
- Key Laboratory of Skin Cancer of Fujian Higher Education Institutions, The First Affiliated Hospital, Fujian Medical University, Fuzhou, 350000, China.
| | - Bo Cheng
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, 20 Chazhong Road, Fuzhou, Fujian, 350000, China.
- Fujian Dermatology and Venereology Research Institute, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China.
- Key Laboratory of Skin Cancer of Fujian Higher Education Institutions, The First Affiliated Hospital, Fujian Medical University, Fuzhou, 350000, China.
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8
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Hu F, Gao Q, Liu J, Chen W, Zheng C, Bai Q, Sun N, Zhang W, Zhang Y, Lu T. Smart microneedle patches for wound healing and management. J Mater Chem B 2023; 11:2830-2851. [PMID: 36916631 DOI: 10.1039/d2tb02596e] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
The number of patients with non-healing wounds is generally increasing globally, placing a huge social and economic burden on every country. The complexity of the wound-healing process remains a major health challenge despite the numerous studies that have been reported on conventional wound dressings. Therefore, a therapeutic system that combines diagnostic and therapeutic modalities is essential to monitor wound-related biomarkers and facilitate wound healing in real time. Microneedles, as a multifunctional platform, are promising for transdermal diagnostics and drug delivery. Their advantages are mainly reflected in painless transdermal drug delivery, good biocompatibility, and ease of self-administration. In this work, we review recent advances in the use of microneedle patches for wound healing and monitoring. The paper first provides a brief overview of the skin structure and the wound healing process, and then discusses the current state of research and prospects for the development of wound-related biomarkers and their real-time monitoring based on microneedle sensors. It summarizes the current state of research based on the unique design of microneedle patches, including biomimetic, conductive, and environmentally responsive, to achieve wound healing. It further summarizes the prospects for the application of different microneedle-based drug delivery modalities and drug delivery substances for wound healing, due to their superior transdermal drug delivery advantages. It concludes with challenges and expectations for the use of smart microneedle patches for wound healing and management.
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Affiliation(s)
- Fangfang Hu
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Qian Gao
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Jinxi Liu
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Wenting Chen
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Caiyun Zheng
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Que Bai
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Na Sun
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Wenhui Zhang
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Yanni Zhang
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
| | - Tingli Lu
- School of Life Sciences, Northwestern Polytechnical University 127 West Youyi Road, Beilin District, Xi'an Shaanxi, 710072, P. R. China.
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9
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Mureşan CI, Dezmirean DS, Marc BD, Suharoschi R, Pop OL, Buttstedt A. Biological properties and activities of major royal jelly proteins and their derived peptides. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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10
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Zhang JL, Richetti S, Ramezani T, Welcker D, Lütke S, Pogoda HM, Hatzold J, Zaucke F, Keene DR, Bloch W, Sengle G, Hammerschmidt M. Vertebrate extracellular matrix protein hemicentin-1 interacts physically and genetically with basement membrane protein nidogen-2. Matrix Biol 2022; 112:132-154. [PMID: 36007682 PMCID: PMC10015821 DOI: 10.1016/j.matbio.2022.08.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/18/2022] [Accepted: 08/20/2022] [Indexed: 11/19/2022]
Abstract
Hemicentins are large proteins of the extracellular matrix that belong to the fibulin family and play pivotal roles during development and homeostasis of a variety of invertebrate and vertebrate tissues. However, bona fide interaction partners of hemicentins have not been described as yet. Here, applying surface plasmon resonance spectroscopy and co-immunoprecipitation, we identify the basement membrane protein nidogen-2 (NID2) as a binding partner of mouse and zebrafish hemicentin-1 (HMCN1), in line with the formerly described essential role of mouse HMCN1 in basement membrane integrity. We show that HMCN1 binds to the same protein domain of NID2 (G2) as formerly shown for laminins, but with an approximately 3.5-fold lower affinity and in a competitive manner. Furthermore, immunofluorescence and immunogold labeling revealed that HMCN1/Hmcn1 is localized close to basement membranes and in partial overlap with NID2/Nid2a in different tissues of mouse and zebrafish. Genetic knockout and antisense-mediated knockdown studies in zebrafish further show that loss of Nid2a leads to similar defects in fin fold morphogenesis as the loss of Laminin-α5 (Lama5) or Hmcn1. Finally, combined partial loss-of-function studies indicated that nid2a genetically interacts with both hmcn1 and lama5. Together, these findings suggest that despite their mutually exclusive physical binding, hemicentins, nidogens, and laminins tightly cooperate and support each other during formation, maintenance, and function of basement membranes to confer tissue linkage.
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Affiliation(s)
- Jin-Li Zhang
- Institute of Zoology, Developmental Biology Unit, University of Cologne, Cologne, Germany
| | - Stefania Richetti
- Institute of Zoology, Developmental Biology Unit, University of Cologne, Cologne, Germany
| | - Thomas Ramezani
- Institute of Zoology, Developmental Biology Unit, University of Cologne, Cologne, Germany
| | - Daniela Welcker
- Institute of Zoology, Developmental Biology Unit, University of Cologne, Cologne, Germany
| | - Steffen Lütke
- Center for Biochemistry, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany; Department of Pediatrics and Adolescent Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Hans-Martin Pogoda
- Institute of Zoology, Developmental Biology Unit, University of Cologne, Cologne, Germany
| | - Julia Hatzold
- Institute of Zoology, Developmental Biology Unit, University of Cologne, Cologne, Germany
| | - Frank Zaucke
- Research Unit for Osteoarthritis, Department for Orthopedics, University Hospital Frankfurt, Goethe University, Frankfurt, Germany
| | - Douglas R Keene
- Micro-Imaging Center, Shriners Hospital for Children, Portland, OR, United States
| | - Wilhelm Bloch
- Institute of Cardiology and Sports Medicine, German Sport University Cologne, Cologne, Germany
| | - Gerhard Sengle
- Center for Biochemistry, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany; Department of Pediatrics and Adolescent Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany; Cologne Center for Musculoskeletal Biomechanics (CCMB), University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | - Matthias Hammerschmidt
- Institute of Zoology, Developmental Biology Unit, University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany.
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11
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Prawira AY, Novelina S, Farida WR, Darusman HS, Warita K, Hosaka YZ, Agungpriyono S. Determination of thick and thin fibres distribution in Sunda porcupine dorsal skin (Hystrix javanica) using Picrosirius red staining. Anat Histol Embryol 2022; 51:666-673. [PMID: 35899393 DOI: 10.1111/ahe.12845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 07/07/2022] [Accepted: 07/13/2022] [Indexed: 11/28/2022]
Abstract
The complexity of the Sunda porcupine skin has become an important topic due to the unique characteristics of its quill follicles. The structure and chemical composition of the skin has affected many physiological and other conditions. Generally, quills are larger, stronger and stiffer than hair; therefore, the skin structure needs to adapt to support their physiology. The strength of the skin is determined by its collagen composition and arrangement; therefore, this study aims to analyse the composition and distribution of thick and thin fibres based on the specific characteristics of Sunda porcupine skin under polarized light using picrosirius red staining. The skin samples used were from the thoracodorsal and lumbosacral regions of eight Sunda porcupine adults. The histological staining was carried out using the picrosirius red method, while the samples were observed under a polarized light microscope and analysed with software. The results showed that the skin is composed of 36%-65% thick fibres, 20%-35% thin fibres and small amounts of other types with the lumbosacral region having higher compositions of thick and thin fibres than those in the thoracodorsal region. Furthermore, the thoracodorsal and lumbosacral regions have the highest composition of thick fibre in the deeper dermis and quill follicle, respectively. These demonstrated that the complexity of the skin structure of Sunda porcupine due to its quill derivates correlated with its collagen composition and distribution.
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Affiliation(s)
- Andhika Yudha Prawira
- Department of Anatomy Physiology and Pharmacology, Faculty of Veterinary Medicine, IPB University, Bogor, Indonesia.,Research Center for Applied Zoology, Research Organization for Life Science and Environment, National Research and Innovation Agency (BRIN), Cibinong, Indonesia
| | - Savitri Novelina
- Department of Anatomy Physiology and Pharmacology, Faculty of Veterinary Medicine, IPB University, Bogor, Indonesia
| | - Wartika Rosa Farida
- Research Center for Applied Zoology, Research Organization for Life Science and Environment, National Research and Innovation Agency (BRIN), Cibinong, Indonesia
| | - Huda Shalahudin Darusman
- Department of Anatomy Physiology and Pharmacology, Faculty of Veterinary Medicine, IPB University, Bogor, Indonesia.,Primate Research Center, IPB University, Bogor, Indonesia
| | - Katsuhiko Warita
- Laboratory of Veterinary Anatomy, Department of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Yoshinao Z Hosaka
- Laboratory of Veterinary Anatomy, Department of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Srihadi Agungpriyono
- Department of Anatomy Physiology and Pharmacology, Faculty of Veterinary Medicine, IPB University, Bogor, Indonesia
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12
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Solarte David VA, Güiza-Argüello VR, Arango-Rodríguez ML, Sossa CL, Becerra-Bayona SM. Decellularized Tissues for Wound Healing: Towards Closing the Gap Between Scaffold Design and Effective Extracellular Matrix Remodeling. Front Bioeng Biotechnol 2022; 10:821852. [PMID: 35252131 PMCID: PMC8896438 DOI: 10.3389/fbioe.2022.821852] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 01/28/2022] [Indexed: 12/27/2022] Open
Abstract
The absence or damage of a tissue is the main cause of most acute or chronic diseases and are one of the appealing challenges that novel therapeutic alternatives have, in order to recover lost functions through tissue regeneration. Chronic cutaneous lesions are the most frequent cause of wounds, being a massive area of regenerative medicine and tissue engineering to have efforts to develop new bioactive medical products that not only allow an appropriate and rapid healing, but also avoid severe complications such as bacterial infections. In tissue repair and regeneration processes, there are several overlapping stages that involve the synergy of cells, the extracellular matrix (ECM) and biomolecules, which coordinate processes of ECM remodeling as well as cell proliferation and differentiation. Although these three components play a crucial role in the wound healing process, the ECM has the function of acting as a biological platform to permit the correct interaction between them. In particular, ECM is a mixture of crosslinked proteins that contain bioactive domains that cells recognize in order to promote migration, proliferation and differentiation. Currently, tissue engineering has employed several synthetic polymers to design bioactive scaffolds to mimic the native ECM, by combining biopolymers with growth factors including collagen and fibrinogen. Among these, decellularized tissues have been proposed as an alternative for reconstructing cutaneous lesions since they maintain the complex protein conformation, providing the required functional domains for cell differentiation. In this review, we present an in-depth discussion of different natural matrixes recently employed for designing novel therapeutic alternatives for treating cutaneous injuries, and overview some future perspectives in this area.
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Affiliation(s)
- Víctor Alfonso Solarte David
- Program of Medicine, Faculty of Health Sciences, Universidad Autónoma de Bucaramanga, Bucaramanga, Colombia
- Program of Biomedical Engineering, Faculty of Engineering, Universidad Autónoma de Bucaramanga, Bucaramanga, Colombia
| | - Viviana Raquel Güiza-Argüello
- Metallurgical Engineering and Materials Science Department, Faculty of Physicochemical Engineering, Universidad Industrial de Santander, Bucaramanga, Colombia
| | - Martha L. Arango-Rodríguez
- Multi-tissue Bank and Advanced Therapy Center, Fundación Oftalmológica de Santander, Clínica Carlos Ardila Lulle, Floridablanca, Colombia
| | - Claudia L. Sossa
- Program of Medicine, Faculty of Health Sciences, Universidad Autónoma de Bucaramanga, Bucaramanga, Colombia
- Multi-tissue Bank and Advanced Therapy Center, Fundación Oftalmológica de Santander, Clínica Carlos Ardila Lulle, Floridablanca, Colombia
| | - Silvia M. Becerra-Bayona
- Program of Medicine, Faculty of Health Sciences, Universidad Autónoma de Bucaramanga, Bucaramanga, Colombia
- *Correspondence: Silvia M. Becerra-Bayona,
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13
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Dussoyer M, Page A, Delolme F, Rousselle P, Nyström A, Moali C. Comparison of extracellular matrix enrichment protocols for the improved characterization of the skin matrisome by mass spectrometry. J Proteomics 2022; 251:104397. [PMID: 34678517 DOI: 10.1016/j.jprot.2021.104397] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 09/23/2021] [Accepted: 10/03/2021] [Indexed: 12/14/2022]
Abstract
A striking feature of skin organization is that the extracellular matrix (ECM) occupies a larger volume than the cells. Skin ECM also directly contributes to aging and most cutaneous diseases. In recent years, specific ECM enrichment protocols combined with in silico approaches allowed the proteomic description of the matrisome of various organs and tumor samples. Nevertheless, the skin matrisome remains under-studied and protocols allowing the efficient recovery of the diverse ECM found in skin are still to be described. Here, we compared four protocols allowing the enrichment of ECM proteins from adult mouse back skin and found that all protocols led to a significant enrichment (up to 65%) of matrisome proteins when compared to total skin lysates. The protocols based on decellularization and solubility profiling gave the best results in terms of numbers of proteins identified and confirmed that skin matrisome proteins exhibit very diverse solubility and abundance profiles. We also report the first description of the skin matrisome of healthy adult mice that includes 236 proteins comprising 95 core matrisome proteins and 141 associated matrisome proteins. These results provide a reliable basis for future characterizations of skin ECM proteins and their dysregulations in disease-specific contexts. SIGNIFICANCE: Extracellular matrix proteins are key players in skin physiopathology and have been involved in several diseases such as genetic disorders, wound healing defects, scleroderma and skin carcinoma. However, skin ECM proteins are numerous, diverse and challenging to analyze by mass spectrometry due to the multiplicity of their post-translational modifications and to the heterogeneity of their solubility profiles. Here, we performed the thorough evaluation of four ECM enrichment protocols compatible with the proteomic analysis of mouse back skin and provide the first description of the adult mouse skin matrisome in homeostasis conditions. Our work will greatly facilitate the future characterization of skin ECM alterations in preclinical mouse models and will inspire new optimizations to analyze the skin matrisome of other species and of human clinical samples.
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Affiliation(s)
- Mélissa Dussoyer
- University of Lyon, CNRS, Tissue Biology and Therapeutic Engineering Laboratory, LBTI, UMR5305, F-69367 Lyon, France
| | - Adeline Page
- University of Lyon, INSERM, ENS Lyon, CNRS, Protein Science Facility, SFR BioSciences, UAR3444/US8, F-69366 Lyon, France
| | - Frédéric Delolme
- University of Lyon, INSERM, ENS Lyon, CNRS, Protein Science Facility, SFR BioSciences, UAR3444/US8, F-69366 Lyon, France
| | - Patricia Rousselle
- University of Lyon, CNRS, Tissue Biology and Therapeutic Engineering Laboratory, LBTI, UMR5305, F-69367 Lyon, France
| | - Alexander Nyström
- Department of Clinical Dermatology/Medical Center, University of Freiburg, Freiburg, Germany; Freiburg Institute for Advanced Studies (FRIAS), University of Freiburg, Freiburg, Germany
| | - Catherine Moali
- University of Lyon, CNRS, Tissue Biology and Therapeutic Engineering Laboratory, LBTI, UMR5305, F-69367 Lyon, France.
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14
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Arab WT, Susapto HH, Alhattab D, Hauser CAE. Peptide nanogels as a scaffold for fabricating dermal grafts and 3D vascularized skin models. J Tissue Eng 2022; 13:20417314221111868. [PMID: 35923174 PMCID: PMC9340315 DOI: 10.1177/20417314221111868] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 06/21/2022] [Indexed: 11/16/2022] Open
Abstract
Millions of people worldwide suffer from skin injuries, which create significant problems in their lives and are costly to cure. Tissue engineering is a promising approach that aims to fabricate functional organs using biocompatible scaffolds. We designed ultrashort tetrameric peptides with promising properties required for skin tissue engineering. Our work aimed to test the efficacy of these scaffolds for the fabrication of dermal grafts and 3D vascularized skin tissue models. We found that the direct contact of keratinocytes and fibroblasts enhanced the proliferation of the keratinocytes. Moreover, the expression levels of TGF-β1, b-FGF, IL-6, and IL-1α is correlated with the growth of the fibroblasts and keratinocytes in the co-culture. Furthermore, we successfully produced a 3D vascularized skin co-culture model using these peptide scaffolds. We believe that the described results represent an advancement in the fabrication of skin tissue equivalent, thereby providing the opportunity to rebuild missing, failing, or damaged parts. Graphical abstract
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Affiliation(s)
- Wafaa T Arab
- Laboratory for Nanomedicine, Division of Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Hepi H Susapto
- Laboratory for Nanomedicine, Division of Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Computational Bioscience Research Center (CBRC), KAUST, Thuwal, Saudi Arabia
| | - Dana Alhattab
- Laboratory for Nanomedicine, Division of Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Computational Bioscience Research Center (CBRC), KAUST, Thuwal, Saudi Arabia
| | - Charlotte A E Hauser
- Laboratory for Nanomedicine, Division of Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Computational Bioscience Research Center (CBRC), KAUST, Thuwal, Saudi Arabia
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15
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Keratin-Alginate Sponges Support Healing of Partial-Thickness Burns. Int J Mol Sci 2021; 22:ijms22168594. [PMID: 34445299 PMCID: PMC8395243 DOI: 10.3390/ijms22168594] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 07/27/2021] [Accepted: 08/07/2021] [Indexed: 01/07/2023] Open
Abstract
Deep partial-thickness burns damage most of the dermis and can cause severe pain, scarring, and mortality if left untreated. This study serves to evaluate the effectiveness of crosslinked keratin–alginate composite sponges as dermal substitutes for deep partial-thickness burns. Crosslinked keratin–alginate sponges were tested for the ability to support human dermal fibroblasts in vitro and to support the closure and healing of partial-thickness burn wounds in Sus scrofa pigs. Keratin–alginate composite sponges supported the enhanced proliferation of human dermal fibroblasts compared to alginate-only sponges and exhibited decreased contraction in vitro when compared to keratin only sponges. As dermal substitutes in vivo, the sponges supported the expression of keratin 14, alpha-smooth muscle actin, and collagen IV within wound sites, comparable to collagen sponges. Keratin–alginate composite sponges supported the regeneration of basement membranes in the wounds more than in collagen-treated wounds and non-grafted controls, suggesting the subsequent development of pathological scar tissues may be minimized. Results from this study indicate that crosslinked keratin–alginate sponges are suitable alternative dermal substitutes for clinical applications in wound healing and skin regeneration.
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16
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Effects of Natural Antioxidants on Phospholipid and Ceramide Profiles of 3D-Cultured Skin Fibroblasts Exposed to UVA or UVB Radiation. Antioxidants (Basel) 2021; 10:antiox10040578. [PMID: 33918064 PMCID: PMC8068794 DOI: 10.3390/antiox10040578] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/01/2021] [Accepted: 04/06/2021] [Indexed: 01/28/2023] Open
Abstract
Ultraviolet (UV) radiation is one of the primary factors responsible for disturbances in human skin cells phospholipid metabolism. Natural compounds that are commonly used to protect skin, due to their lipophilic or hydrophilic nature, show only a narrow range of cytoprotective activity, which prompts research on their combined application. Therefore, the aim of this study was to examine the effect of ascorbic acid and rutin on the phospholipid and ceramide profiles in UV-irradiated fibroblasts cultured in a three-dimensional system that approximates the culture conditions to the dermis. An ultra-high-performance liquid chromatograph coupled with a quadrupole time-of-flight mass spectrometer was used for phospholipid and ceramide profiling. As a result of UVA and UVB cells irradiation, upregulation of phosphatidylcholines, ceramides, and downregulation of sphingomyelins were observed, while treatment with ascorbic acid and rutin of UVA/UVB-irradiated fibroblast promoted these changes to provide cells a stronger response to stress. Moreover, an upregulation of phosphatidylserines in cells exposed to UVB and treated with both antioxidants suggests the stimulation of UV-damaged cells apoptosis. Our findings provide new insight into action of rutin and ascorbic acid on regulation of phospholipid metabolism, which improves dermis fibroblast membrane properties.
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17
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Ramasamy S, Davoodi P, Vijayavenkataraman S, Teoh JH, Thamizhchelvan AM, Robinson KS, Wu B, Fuh JY, DiColandrea T, Zhao H, Lane EB, Wang CH. Optimized construction of a full thickness human skin equivalent using 3D bioprinting and a PCL/collagen dermal scaffold. ACTA ACUST UNITED AC 2021. [DOI: 10.1016/j.bprint.2020.e00123] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Yang J, Deng P, Qi Y, Feng X, Wen H, Chen F. MicroRNA-185 inhibits the proliferation and migration of HaCaT keratinocytes by targeting peroxisome proliferator-activated receptor β. Exp Ther Med 2021; 21:366. [PMID: 33732339 PMCID: PMC7903386 DOI: 10.3892/etm.2021.9797] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 12/12/2020] [Indexed: 11/06/2022] Open
Abstract
Proliferation and migration of keratinocytes are major processes of skin wound repair after injury. It has been indicated that microRNAs (miRNAs/miRs) are associated with the proliferation and migration of keratinocytes. However, the mechanism by which miR-185 affects these processes in keratinocytes remains unclear. In the present study, the expression level of miR-185 and peroxisome proliferator-activated receptor β (PPARβ) was examined by reverse transcription-quantitative PCR in HaCaT keratinocytes. Cell proliferation was evaluated using Cell Counting Kit-8 and colony formation assays. Western blot analysis was used to detect the levels of cell proliferation, migration and PI3K/AKT signaling pathway-associated proteins. In addition, the migratory capacity of the cells was determined using Transwell assay. The target gene of miR-185 was verified using dual-luciferase reporter assay. The results indicated that overexpression of miR-185 inhibited proliferation, migration and activation of the PI3K/AKT signaling pathway in HaCaT keratinocytes. PPARβ was indicated to be a target of miR-185 and its overexpression promoted the proliferation and migration of HaCaT keratinocytes, while its knockdown exhibited the adverse effects. Furthermore, PI3K inhibitor LY294002 inhibited activation of the PI3K/AKT signaling pathway and decreased the proliferation and migration of HaCaT keratinocytes. In addition, overexpressed PPARβ reversed the suppressive effects of miR-185 overexpression on proliferation, migration and activation of the PI3K/AKT signaling pathway. In conclusion, the results of the present study demonstrated that miR-185 suppressed activation of the PI3K/AKT signaling pathway via targeting PPARβ, thereby regulating proliferation and migration in HaCaT keratinocytes. The present study provided a novel theoretical basis for the use of miR-185 as a target in wound repair.
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Affiliation(s)
- Jingzhe Yang
- Department of Burn and Plastic Surgery, Affiliated Hospital of Chengde Medical University, South Wing Hospital of Chengde Medical College, Chengde, Hebei 067000, P.R. China
| | - Pingyang Deng
- Department of Burn and Plastic Surgery, Bayingol Mongolia Autonomous Prefecture People's Hospital, Urumqi, Xinjiang Uyghur Autonomous Region 841000, P.R. China
| | - Yonggang Qi
- Department of General Surgery, Bayingol Mongolia Autonomous Prefecture People's Hospital, Urumqi, Xinjiang Uyghur Autonomous Region 841000, P.R. China
| | - Xinshu Feng
- Department of Burn and Plastic Surgery, Affiliated Hospital of Chengde Medical University, South Wing Hospital of Chengde Medical College, Chengde, Hebei 067000, P.R. China
| | - Hailing Wen
- Department of Burn and Plastic Surgery, Affiliated Hospital of Chengde Medical University, South Wing Hospital of Chengde Medical College, Chengde, Hebei 067000, P.R. China
| | - Fengping Chen
- Department of Burn and Plastic Surgery, Affiliated Hospital of Chengde Medical University, South Wing Hospital of Chengde Medical College, Chengde, Hebei 067000, P.R. China
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19
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Ilić K, Hartl S, Galić E, Tetyczka C, Pem B, Barbir R, Milić M, Vinković Vrček I, Roblegg E, Pavičić I. Interaction of Differently Coated Silver Nanoparticles With Skin and Oral Mucosal Cells. J Pharm Sci 2021; 110:2250-2261. [PMID: 33539871 DOI: 10.1016/j.xphs.2021.01.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/20/2021] [Accepted: 01/28/2021] [Indexed: 12/19/2022]
Abstract
Silver nanoparticles (AgNP) can be found in different consumer products and various medical devices due to their excellent biocidal properties. Despite extensive scientific literature reporting biological effects of AgNP, there is still a lack of scientific evidence on how different surface functionalization affects AgNP interaction with the human skin and the oral epithelium. This study aimed to investigate biological consequences following the treatment of HaCaT and TR146 cells with AgNP stabilized with negatively charged sodium bis(2-ethylhexyl)-sulfosuccinate (AOT), neutral polyvinylpyrrolidone (PVP), and positively charged poly-l-lysine (PLL). All AgNP were characterized by means of size, shape and surface charge. Interactions with biological barriers were investigated in vitro by determining cell viability, particle uptake, oxidative stress response and DNA damages following AgNP treatment. Results showed a significant difference in cytotoxicity depending on the surface coating used for AgNP stabilization. All three types of AgNP induced apoptosis, oxidative stress response and DNA damages in cells, but AOT- and PVP-coated AgNP exhibited lower toxicity than positively charged PLL-AgNP. Considering the number of data gaps related to the safe use of nanomaterials in biomedicine, this study highlights the importance of particle surface functionalization that should be considered during design and development of future AgNP-based medical products.
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Affiliation(s)
- Krunoslav Ilić
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Sonja Hartl
- Department of Pharmaceutical Technology and Biopharmacy, University of Graz, Institute of Pharmaceutical Sciences, Graz, Austria
| | - Emerik Galić
- Faculty of Agrobiotechnical Sciences, J.J. Strossmayer University of Osijek, Osijek, Croatia
| | - Carolin Tetyczka
- Department of Pharmaceutical Technology and Biopharmacy, University of Graz, Institute of Pharmaceutical Sciences, Graz, Austria
| | - Barbara Pem
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Rinea Barbir
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Mirta Milić
- Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | | | - Eva Roblegg
- Department of Pharmaceutical Technology and Biopharmacy, University of Graz, Institute of Pharmaceutical Sciences, Graz, Austria
| | - Ivan Pavičić
- Institute for Medical Research and Occupational Health, Zagreb, Croatia.
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20
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Dua HS, Ting DSJ, Al Saadi A, Said DG. Chemical eye injury: pathophysiology, assessment and management. Eye (Lond) 2020; 34:2001-2019. [PMID: 32572184 PMCID: PMC7784957 DOI: 10.1038/s41433-020-1026-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 05/27/2020] [Accepted: 06/04/2020] [Indexed: 11/09/2022] Open
Abstract
Chemical eye injury (CEI) is an acute emergency which can threaten sight and life. These commonly occur at home or the workplace with the former being generally mild and the latter more severe and bilateral. Major workplace accidents involve other parts of the body and can be associated with inhalation or ingestion of the chemical. Alkali injuries cause damage by saponification of tissue and deeper penetration as a consequence. Acid injuries cause rapid coagulation of tissue, which impedes penetration and limits damage. Irritants such as alcohols, cause superficial epithelial denudation. Severe chemical insult can affect all anterior segment structures causing iris, pupil and lens abnormalities. Eye pressure is variably affected and can be low or high or start as one and rapidly change to the other. Chorioretinal changes in the form of vasculopathy are seen and ascribed to be secondary to anterior segment inflammation rather than due to the direct effect of CEI. Final outcome related to structure and function is determined by the injurious agent, duration of exposure, nature of treatment and the rapidity with which it is instituted. Prevention of further damage by profuse and prolonged eye wash, after ascertaining pH of both eyes, together with exploration and removal of all particulate matter, is the key. Other management principles include a complete and thorough assessment, control of inflammation, facilitation of healing and prevention and management of sequelae and complications. Intraocular pressure is often forgotten and must be assessed and managed. Management often requires a multidisciplinary approach.
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Affiliation(s)
- Harminder S Dua
- Academic Ophthalmology, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, Nottingham, UK.
- Department of Ophthalmology, Queen's Medical Centre, Nottingham, UK.
| | - Darren Shu Jeng Ting
- Academic Ophthalmology, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, Nottingham, UK
- Department of Ophthalmology, Queen's Medical Centre, Nottingham, UK
| | - Ahmed Al Saadi
- Department of Ophthalmology, Zayed Military Hospital, Abu Dhabi, UAE
| | - Dalia G Said
- Academic Ophthalmology, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, Nottingham, UK
- Department of Ophthalmology, Queen's Medical Centre, Nottingham, UK
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21
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Abstract
There have been significant advances in the care of burns over the past decade. As a result of the improved survival of burn patients, attention has shifted to the optimized management of their wounds. Traditionally, autografts have been described as the gold standard treatment in cases of deep second- and third-degree burn wounds; however, they are limited especially in large surface area burns. As such, advancements have been made in the development of biologic dressings, which attempt to mimic the function of the lost epidermis and/or dermis. The ideal biologic dressing is nontoxic, lacks antigenicity, is immunologically compatible, and is sterile. Additionally, easy storage conditions, long shelf lives, and reasonable costs are key determinants of whether biologic dressings may truly be widely used in the clinical setting. Biologic dressings serve an important role as skin substitutes in the setting of acute burn injury. This review aims to summarize the multitude of available biologic dressings and their applications. METHODS: The PubMed and Google Scholar databases were searched for the following terms either alone or in combination: "burn injury," "biologic membrane," "skin substitutes," "biosynthetic dressings," and "acellular membrane."
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22
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Huang JW, Xu QY, Lin M, Cheng B, Ji C. The Extract from Acidosasa longiligula Alleviates in vitro UV-Induced Skin Cell Damage via Positive Regulation of Thioredoxin 1. Clin Interv Aging 2020; 15:897-905. [PMID: 32606631 PMCID: PMC7306462 DOI: 10.2147/cia.s239920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 05/29/2020] [Indexed: 11/23/2022] Open
Abstract
Introduction Skin, as the outermost organ, is exposed to a wide range of environmental risk factors including ultraviolet (UV) and all kinds of pollutants. Excessive UV exposure contributes to many disorders, such as photoaging, skin inflammation, and carcinogenesis. Methods To determine the effects of bamboo extract (BEX) from our local plant, Acidosasa longiligula, on UV-irritated human skin, we conducted a variety of studies, including Western blot, apoptosis assays, reactive oxygen species (ROS) detection, and thioredoxin (TXN) and thioredoxin reductase (TXNRD) activity assays in primary skin keratinocytes. Results We first determined that BEX protects human skin keratinocytes against UV radiation-induced apoptosis and ROS production. UV radiation can robustly impair TXN and TXNRD activity which can, in turn, be significantly rescued by BEX treatment. Moreover, BEX regulates TXN1 levels in primary skin keratinocytes and TXN1 is proved to be required for the protective function of BEX. Last, we found that the NF-κB/p65 pathway mediates the protective function of BEX against UV. Discussion Collectively, our work delineates the beneficial role of BEX in UV-induced skin cell damage and provides a novel therapeutic reagent to prevent or alleviate the progress of photoaging and other UV-provoked skin diseases.
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Affiliation(s)
- Jin-Wen Huang
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, People's Republic of China
| | - Qiu-Yun Xu
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, People's Republic of China
| | - Min Lin
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, People's Republic of China
| | - Bo Cheng
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, People's Republic of China
| | - Chao Ji
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, People's Republic of China
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23
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Miao L, Wan J, Song Y, Guo H, Chen H, Cheng X, Zhang H. Skin-Inspired Humidity and Pressure Sensor with a Wrinkle-on-Sponge Structure. ACS APPLIED MATERIALS & INTERFACES 2019; 11:39219-39227. [PMID: 31556591 DOI: 10.1021/acsami.9b13383] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Sensors with multifunctions have attracted great attention for their extensive application value, among which humidity sensing and pressure sensing are necessary to electronics undoubtedly because of the complex physical environment we live in. Inspired by the structure of skin, in this article, we design a new method to combine wrinkle structure with porous sponge structure and achieve a novel, flexible, compressible, and bifunctional sensor based on carbon nanotube-polydimethylsiloxane (CNT-PDMS) with functions of humidity sensing and pressure sensing. The performance of the humidity sensing part can be controlled by the ultraviolet and ozone (UVO) treatment time and CNT concentration, while the sensitivity of the pressure sensing part can be controlled by the CNT concentration and grinding time of sugar granules. The bifunctional sensor can easily sense approaching and touching of a hand, which shows great potential of alarming and protecting some electronics. Moreover, the bifunctional sensor can also be used in detecting human joint motions and breath conditions as a wearable and flexible health monitor.
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Lin Y, Shao Q, Zhang M, Lu C, Fleming J, Su S. Royal jelly-derived proteins enhance proliferation and migration of human epidermal keratinocytes in an in vitro scratch wound model. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 19:175. [PMID: 31299973 PMCID: PMC6626366 DOI: 10.1186/s12906-019-2592-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 07/04/2019] [Indexed: 12/28/2022]
Abstract
Background Skin injury is inevitable in daily life. In recent years, with the increasing morbidity of diseases such as diabetes and metabolic disorders, chronic wounds have become a considerable challenge in clinical practice. Royal jelly, reported to have multifarious biological and physiological properties, has been used as a remedy for a variety of wounds since ancient times. However, the active components and mechanisms underlying the wound-healing properties of royal jelly are still largely unknown. Methods Water-soluble proteins of royal jelly were fractionated and investigated for the proliferative and migratory effects on human epidermal keratinocytes (HaCaT) in an in vitro wound healing model. The proteins present in bioactive fractions were characterised and quantified using Label-free protein quantification method. The potential functions of these proteins in biological systems were further analysed using bioinformatic tools. Results A protein fraction, mainly containing major royal jelly proteins 2 (MRJP2), MRJP3 and MRJP7, stimulated proliferative and migratory activities in HaCaT cells without visible cytotoxicity. It exerted the greatest effects on the growth of HaCaT cells in the first 48 h. Furthermore, when treated with this protein fraction, the closure rates of the in vitro scratch wound were significantly increased. Functional analysis indicated that MRJP2, MRJP3 and MRJP7 were associated with carbohydrate transport and metabolism. Conclusions We fractionated the water-soluble proteins of royal jelly and identified one fraction (Fraction 2) that induced both proliferative and migratory effects on a human epidermal keratinocyte cell line. Major royal jelly proteins (MRJP2, MRJP3 and/or MRJP7) were speculated to possess potential wound-healing bioactivity. This is the first report that royal jelly may improve wound closure via MRJP-induced cellular proliferation and migration. These proteins may be valuable lead compounds for the development of novel wound healing medications. Our findings would facilitate better understanding of the wound repair mechanisms of royal jelly.
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Kaur A, Midha S, Giri S, Mohanty S. Functional Skin Grafts: Where Biomaterials Meet Stem Cells. Stem Cells Int 2019; 2019:1286054. [PMID: 31354835 PMCID: PMC6636521 DOI: 10.1155/2019/1286054] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 05/21/2019] [Indexed: 12/22/2022] Open
Abstract
Skin tissue engineering has attained several clinical milestones making remarkable progress over the past decades. Skin is inhabited by a plethora of cells spatiotemporally arranged in a 3-dimensional (3D) matrix, creating a complex microenvironment of cell-matrix interactions. This complexity makes it difficult to mimic the native skin structure using conventional tissue engineering approaches. With the advent of newer fabrication strategies, the field is evolving rapidly. However, there is still a long way before an artificial skin substitute can fully mimic the functions and anatomical hierarchy of native human skin. The current focus of skin tissue engineers is primarily to develop a 3D construct that maintains the functionality of cultured cells in a guided manner over a period of time. While several natural and synthetic biopolymers have been translated, only partial clinical success is attained so far. Key challenges include the hierarchical complexity of skin anatomy; compositional mismatch in terms of material properties (stiffness, roughness, wettability) and degradation rate; biological complications like varied cell numbers, cell types, matrix gradients in each layer, varied immune responses, and varied methods of fabrication. In addition, with newer biomaterials being adopted for fabricating patient-specific skin substitutes, issues related to escalating processing costs, scalability, and stability of the constructs under in vivo conditions have raised some concerns. This review provides an overview of the field of skin regenerative medicine, existing clinical therapies, and limitations of the current techniques. We have further elaborated on the upcoming tissue engineering strategies that may serve as promising alternatives for generating functional skin substitutes, the pros and cons associated with each technique, and scope of their translational potential in the treatment of chronic skin ailments.
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Affiliation(s)
- Amtoj Kaur
- Stem Cell Facility (DBT-Centre of Excellence for Stem Cell Research), All India Institute of Medical Sciences, New Delhi, India
| | - Swati Midha
- Stem Cell Facility (DBT-Centre of Excellence for Stem Cell Research), All India Institute of Medical Sciences, New Delhi, India
| | - Shibashish Giri
- Department of Cell Techniques and Applied Stem Cell Biology, Centre for Biotechnology and Biomedicine, University of Leipzig, Deutscher Platz 5, D-04103 Leipzig, Germany
- Department of Plastic Surgery and Hand Surgery, University Hospital Rechts der Isar, Technische Universität München, Munich, Germany
| | - Sujata Mohanty
- Stem Cell Facility (DBT-Centre of Excellence for Stem Cell Research), All India Institute of Medical Sciences, New Delhi, India
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Adipose-Derived Tissue in the Treatment of Dermal Fibrosis: Antifibrotic Effects of Adipose-Derived Stem Cells. Ann Plast Surg 2019; 80:297-307. [PMID: 29309331 DOI: 10.1097/sap.0000000000001278] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Treatment of hypertrophic scars and other fibrotic skin conditions with autologous fat injections shows promising clinical results; however, the underlying mechanisms of its antifibrotic action have not been comprehensively studied. Adipose-derived stem cells, or stromal cell-derived factors, inherent components of the transplanted fat tissue, seem to be responsible for its therapeutic effects on difficult scars. The mechanisms by which this therapeutic effect takes place are diverse and are mostly mediated by paracrine signaling, which switches on various antifibrotic molecular pathways, modulates the activity of the central profibrotic transforming growth factor β/Smad pathway, and normalizes functioning of fibroblasts and keratinocytes in the recipient site. Direct cell-to-cell communications and differentiation of cell types may also play a positive role in scar treatment, even though they have not been extensively studied in this context. A more thorough understanding of the fat tissue antifibrotic mechanisms of action will turn this treatment from an anecdotal remedy to a more controlled, timely administered technology.
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Uluer ET, Vatansever HS, Aydede H, Ozbilgin MK. Keratinocytes derived from embryonic stem cells induce wound healing in mice. Biotech Histochem 2018; 94:189-198. [PMID: 30460873 DOI: 10.1080/10520295.2018.1541479] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The skin plays an important role in defending the body against the environment. Treatments for burns and skin injuries that use autologous or allogenic skin grafts derived from adult or embryonic stem cells are promising. Embryonic stem cells are candidates for regenerative and reparative medicine. We investigated the utility of keratinocyte-like cells, which are differentiated from mouse embryonic stem cells, for wound healing using a mouse surgical wound model. Mice were allocated to the following groups: experimental, in which dressing and differentiated cells were applied after the surgical wound was created; control, in which only the surgical wound was created; sham, in which only the dressing was applied after the surgical wound was created; and untreated animal controls with healthy skin. Biopsies were taken from each group on days 3, 5 and 7 after cell transfer. Samples were fixed in formalin, then stained with Masson's trichrome and primary antibodies to interleukin-8 (IL-8), fibroblast growth factor-2 (FGF-2), monocyte chemoattractant protein-1 (MCP-1), collagen-1 and epidermal growth factor (EGF) using the indirect immunoperoxidase technique for light microscopy. Wound healing was faster in the experimental group compared to the sham and control groups. The experimental group exhibited increased expression of IL-8, FGF-2 and MCP-1 during early stages of wound healing (inflammation) and collagen-1 and EGF expression during late stages of wound healing (proliferation and remodeling). Keratinocytes derived from embryonic stem cells improved wound healing and influenced the wound healing stages.
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Affiliation(s)
- E T Uluer
- a Departments of Histology and Embryology, Faculty of Medicine , Manisa Celal Bayar University , Manisa , Turkey
| | - H S Vatansever
- a Departments of Histology and Embryology, Faculty of Medicine , Manisa Celal Bayar University , Manisa , Turkey
| | - H Aydede
- b Departments of General Surgery, Faculty of Medicine , Manisa Celal Bayar University , Manisa , Turkey
| | - M K Ozbilgin
- a Departments of Histology and Embryology, Faculty of Medicine , Manisa Celal Bayar University , Manisa , Turkey
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Sujitha P, Kavitha S, Shakilanishi S, Babu NKC, Shanthi C. Enzymatic dehairing: A comprehensive review on the mechanistic aspects with emphasis on enzyme specificity. Int J Biol Macromol 2018; 118:168-179. [DOI: 10.1016/j.ijbiomac.2018.06.081] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 06/13/2018] [Accepted: 06/15/2018] [Indexed: 12/31/2022]
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Dermatological conditions of farmed Crocodilians: A review of pathogenic agents and their proposed impact on skin quality. Vet Microbiol 2018; 225:89-100. [PMID: 30322539 DOI: 10.1016/j.vetmic.2018.09.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 09/18/2018] [Accepted: 09/19/2018] [Indexed: 01/24/2023]
Abstract
The control of pathogens that target crocodilian skin is essential to the long-term success and sustainability of intensive farming operations worldwide. To understand the impact these pathogens may have on the skin, a brief overview of skin histology is given. A review of the known viral, bacterial, fungal and helminth taxa associated with skin conditions in commercially significant crocodilian species is presented. Best management practices are discussed, with an emphasis on addressing extrinsic factors that influence transmission and pathogenicity. It is argued that, in the past, reduced immune function arising from inadequate thermal regulation was the leading cause of skin disease in captive crocodilians. Consequently, innovations such as temperature control, coupled with the adoption of more stringent hygiene standards, have greatly reduced the prevalence of many infectious skin conditions in intensively farmed populations. However, despite improvements in animal husbandry and disease management, viral pathogens such as West Nile virus, herpesvirus and poxvirus continue to afflict crocodilians in modern captive production systems.
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Moalli F, Ficht X, Germann P, Vladymyrov M, Stolp B, de Vries I, Lyck R, Balmer J, Fiocchi A, Kreutzfeldt M, Merkler D, Iannacone M, Ariga A, Stoffel MH, Sharpe J, Bähler M, Sixt M, Diz-Muñoz A, Stein JV. The Rho regulator Myosin IXb enables nonlymphoid tissue seeding of protective CD8 + T cells. J Exp Med 2018; 215:1869-1890. [PMID: 29875261 PMCID: PMC6028505 DOI: 10.1084/jem.20170896] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 12/28/2017] [Accepted: 05/11/2018] [Indexed: 12/27/2022] Open
Abstract
Moalli et al. combine in vitro CD8+ T cell motility analysis with intravital imaging of mouse tissues to identify the actomyosin regulator Myo9b as a central player for nonlymphoid tissue infiltration during adaptive immune responses by facilitating crossing of tissue barriers. T cells are actively scanning pMHC-presenting cells in lymphoid organs and nonlymphoid tissues (NLTs) with divergent topologies and confinement. How the T cell actomyosin cytoskeleton facilitates this task in distinct environments is incompletely understood. Here, we show that lack of Myosin IXb (Myo9b), a negative regulator of the small GTPase Rho, led to increased Rho-GTP levels and cell surface stiffness in primary T cells. Nonetheless, intravital imaging revealed robust motility of Myo9b−/− CD8+ T cells in lymphoid tissue and similar expansion and differentiation during immune responses. In contrast, accumulation of Myo9b−/− CD8+ T cells in NLTs was strongly impaired. Specifically, Myo9b was required for T cell crossing of basement membranes, such as those which are present between dermis and epidermis. As consequence, Myo9b−/− CD8+ T cells showed impaired control of skin infections. In sum, we show that Myo9b is critical for the CD8+ T cell adaptation from lymphoid to NLT surveillance and the establishment of protective tissue–resident T cell populations.
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Affiliation(s)
- Federica Moalli
- Theodor Kocher Institute, University of Bern, Bern, Switzerland
| | - Xenia Ficht
- Theodor Kocher Institute, University of Bern, Bern, Switzerland
| | - Philipp Germann
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,European Molecular Biology Laboratory, Barcelona, Spain
| | - Mykhailo Vladymyrov
- Albert Einstein Center for Fundamental Physics, Laboratory for High Energy Physics (LHEP), University of Bern, Bern, Switzerland
| | - Bettina Stolp
- Theodor Kocher Institute, University of Bern, Bern, Switzerland
| | - Ingrid de Vries
- Institute for Science and Technology Austria, Klosterneuburg, Austria
| | - Ruth Lyck
- Theodor Kocher Institute, University of Bern, Bern, Switzerland
| | - Jasmin Balmer
- Department of Clinical Research and Veterinary Public Health, University of Bern, Bern, Switzerland
| | - Amleto Fiocchi
- Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Mario Kreutzfeldt
- Department of Pathology and Immunology, Division of Clinical Pathology, University and University Hospitals of Geneva, Geneva, Switzerland
| | - Doron Merkler
- Department of Pathology and Immunology, Division of Clinical Pathology, University and University Hospitals of Geneva, Geneva, Switzerland
| | - Matteo Iannacone
- Division of Immunology, Transplantation and Infectious Diseases and Experimental Imaging Center, IRCCS San Raffaele Scientific Institute and Vita-Salute San Raffaele University, Milan, Italy
| | - Akitaka Ariga
- Albert Einstein Center for Fundamental Physics, Laboratory for High Energy Physics (LHEP), University of Bern, Bern, Switzerland
| | - Michael H Stoffel
- Department of Clinical Research and Veterinary Public Health, University of Bern, Bern, Switzerland
| | - James Sharpe
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,European Molecular Biology Laboratory, Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - Martin Bähler
- Institut für Molekulare Zellbiologie, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Michael Sixt
- Institute for Science and Technology Austria, Klosterneuburg, Austria
| | - Alba Diz-Muñoz
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Jens V Stein
- Theodor Kocher Institute, University of Bern, Bern, Switzerland
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Yu F, Selva Kumar ND, Choudhury D, Foo LC, Ng SH. Microfluidic platforms for modeling biological barriers in the circulatory system. Drug Discov Today 2018; 23:815-829. [PMID: 29357288 DOI: 10.1016/j.drudis.2018.01.036] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/01/2018] [Accepted: 01/11/2018] [Indexed: 12/15/2022]
Abstract
Microfluidic platforms have recently become popular as in vitro models because of their superiority in recapitulating microenvironments compared with conventional in vitro models. By providing various biochemical and biomechanical cues, healthy and diseased models at the organ level can be applied to disease progression and treatment studies. Microfluidic technologies are especially suitable for modeling biological barriers because the flow in the microchannels mimics the blood flow and body fluids at the interfaces of crucial organs, such as lung, intestine, liver, kidney, brain, and skin. These barriers have similar structures and can be studied with similar approaches for the testing of pharmaceutical compounds. Here, we review recent developments in microfluidic platforms for modeling biological barriers in the circulatory system.
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Affiliation(s)
- Fang Yu
- Singapore Institute of Manufacturing Technology, 2 Fusionopolis Way, #08-04, Innovis, Singapore 138634, Republic of Singapore
| | - Nivasini D/O Selva Kumar
- Institute of Molecular and Cell Biology, 61 Biopolis Dr, Singapore 138673, Republic of Singapore
| | - Deepak Choudhury
- Singapore Institute of Manufacturing Technology, 2 Fusionopolis Way, #08-04, Innovis, Singapore 138634, Republic of Singapore.
| | - Lynette C Foo
- Institute of Molecular and Cell Biology, 61 Biopolis Dr, Singapore 138673, Republic of Singapore
| | - Sum Huan Ng
- Singapore Institute of Manufacturing Technology, 2 Fusionopolis Way, #08-04, Innovis, Singapore 138634, Republic of Singapore
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Cathelicidin-OA1, a novel antioxidant peptide identified from an amphibian, accelerates skin wound healing. Sci Rep 2018; 8:943. [PMID: 29343843 PMCID: PMC5772731 DOI: 10.1038/s41598-018-19486-9] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 01/02/2018] [Indexed: 01/05/2023] Open
Abstract
Cathelicidins play pivotal roles in host defense. The discovery of novel cathelicidins is important research; however, despite the identification of many cathelicidins in vertebrates, few have been reported in amphibians. Here we identified a novel cathelicidin (named cathelicidin-OA1) from the skin of an amphibian species, Odorrana andersonii. Produced by posttranslational processing of a 198-residue prepropeptide, cathelicidin-OA1 presented an amino acid sequence of 'IGRDPTWSHLAASCLKCIFDDLPKTHN' and a molecular mass of 3038.5 Da. Functional analysis showed that, unlike other cathelicidins, cathelicidin-OA1 demonstrated no direct microbe-killing, acute toxicity and hemolytic activity, but did exhibit antioxidant activity. Importantly, cathelicidin-OA1 accelerated wound healing against human keratinocytes (HaCaT) and skin fibroblasts (HSF) in both time- and dose-dependent manners. Notably, cathelicidin-OA1 also showed wound-healing promotion in a mouse model with full-thickness skin wounds, accelerating re-epithelialization and granulation tissue formation by enhancing the recruitment of macrophages to the wound site, inducing HaCaT cell proliferation and HSF cell migration. This is the first cathelicidin identified from an amphibian that shows potent wound-healing activity. These results will help in the development of new types of wound-healing agents and in our understanding of the biological functions of cathelicidins.
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Goodarzi P, Falahzadeh K, Nematizadeh M, Farazandeh P, Payab M, Larijani B, Tayanloo Beik A, Arjmand B. Tissue Engineered Skin Substitutes. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1107:143-188. [PMID: 29855826 DOI: 10.1007/5584_2018_226] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The fundamental skin role is to supply a supportive barrier to protect body against harmful agents and injuries. Three layers of skin including epidermis, dermis and hypodermis form a sophisticated tissue composed of extracellular matrix (ECM) mainly made of collagens and glycosaminoglycans (GAGs) as a scaffold, different cell types such as keratinocytes, fibroblasts and functional cells embedded in the ECM. When the skin is injured, depends on its severity, the majority of mentioned components are recruited to wound regeneration. Additionally, different growth factors like fibroblast growth factor (FGF), epidermal growth factor (EGF), vascular endothelial growth factor (VEGF) are needed to orchestrated wound healing process. In case of large surface area wounds, natural wound repair seems inefficient. Inspired by nature, scientists in tissue engineering field attempt to engineered constructs mimicking natural healing process to promote skin restoration in untreatable injuries. There are three main types of commercially available engineered skin substitutes including epidermal, dermal, and dermoepidermal. Each of them could be composed of scaffold, desired cell types or growth factors. These substitutes could have autologous, allogeneic, or xenogeneic origin. Moreover, they may be cellular or acellular. They are used to accelerate wound healing and recover normal skin functions with pain relief. Although there are a wide variety of commercially available skin substitutes, almost none of them considered as an ideal equivalents required for proper wound healing.
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Affiliation(s)
- Parisa Goodarzi
- Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Khadijeh Falahzadeh
- Metabolomics and Genomics Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehran Nematizadeh
- Metabolomics and Genomics Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Parham Farazandeh
- Metabolomics and Genomics Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Moloud Payab
- Obesity and Eating Habits Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Bagher Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Akram Tayanloo Beik
- Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Babak Arjmand
- Cell Therapy and Regenerative Medicine Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
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Ruan N, Lin C, Dong X, Hu X, Zhang Y. Induction of Rhesus Keratinocytes into Functional Ameloblasts by Mouse Embryonic Dental Mesenchyme. Tissue Eng Regen Med 2017; 15:173-181. [PMID: 30603545 DOI: 10.1007/s13770-017-0098-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 11/02/2017] [Accepted: 11/07/2017] [Indexed: 11/25/2022] Open
Abstract
Fast progresses in stem cell-based tooth tissue engineering have been achieved in recent years in several animal models including the mouse, rat, dog, and pig. Moreover, various postnatal mesenchymal stem cells of dental origin have been isolated and shown capable of differentiating into odontoblasts and generating dentin. Meanwhile, human keratinocyte stem/progenitor cells, gingival epithelial cells, and even iPSC-derived epithelium have been demonstrated to be able to differentiate into functional ameloblasts. Translational medicine studies in the nonhuman primate are irreplaceable steps towards clinical application of stem cell-based tissue engineering therapy. In the present study, we first examined the epithelial stem cell markers in the rhesus skin using immunostaining. Keratinocyte stem cells were then isolated from rhesus epidermis, cultured in vitro, and characterized by epithelial stem cell markers. Epithelial sheets of these cultured keratinocytes, which were recombined with E13.5 mouse dental mesenchyme that possesses odontogenic potential in the presence of exogenous FGF8, were induced to differentiate into enamel-secreting ameloblasts. Our results demonstrate that in the presence of appropriate odontogenic signals, rhesus keratinocytes can be induced to gain odontogenic competence and are capable of participating in odontogenesis, indicating that rhesus keratinocytes are an ideal epithelial cell source for further translational medicine study of tooth tissue engineering in nonhuman primates.
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Affiliation(s)
- Ningsheng Ruan
- Southern Center for Biomedical Research and Fujian Key Laboratory of Developmental and Neuro Biology, College of Life Science, Fujian Normal University, Fuzhou, 350108 Fujian People's Republic of China
| | - Chensheng Lin
- Southern Center for Biomedical Research and Fujian Key Laboratory of Developmental and Neuro Biology, College of Life Science, Fujian Normal University, Fuzhou, 350108 Fujian People's Republic of China
| | - Xiuqing Dong
- Southern Center for Biomedical Research and Fujian Key Laboratory of Developmental and Neuro Biology, College of Life Science, Fujian Normal University, Fuzhou, 350108 Fujian People's Republic of China
| | - Xuefeng Hu
- Southern Center for Biomedical Research and Fujian Key Laboratory of Developmental and Neuro Biology, College of Life Science, Fujian Normal University, Fuzhou, 350108 Fujian People's Republic of China
| | - Yanding Zhang
- Southern Center for Biomedical Research and Fujian Key Laboratory of Developmental and Neuro Biology, College of Life Science, Fujian Normal University, Fuzhou, 350108 Fujian People's Republic of China
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Blistering and Skin Fragility Due to Imatinib Therapy: Loss of Laminin and Collagen IV as a Possible Cause of Cutaneous Basement Membrane Instability. Am J Dermatopathol 2017; 40:371-374. [PMID: 29210715 DOI: 10.1097/dad.0000000000001063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Imatinib mesylate (Glivec; Novartis AG, Basel, Switzerland) is a tyrosine kinase inhibitor which is used in the treatment of oncologic diseases like chronic myeloid leukemia and gastrointestinal stroma tumor (GIST). Among cutaneous side effects, bullous reactions are rare. The authors describe the case of a 66-year-old woman developing blistering and skin fragility on her hands, foot, lower legs, and back after intake of imatinib for treatment of GIST. Biopsy showed vacuolar alteration at the dermoepidermal junction (DEJ) associated with a few lymphocytes and a subepidermal blister. The upper papillary dermis below the vacuolar alteration and below the blister showed hyalinization and loss of elastic microfibrils. Direct immunofluorescence was negative for deposits of immunoglobulins. Immunofluorescence on cryosections revealed loss of laminin and collagen IV in vacuoles at the DEJ. Electron microscopy showed dissolution of lamina lucida and lamina densa of the basement membrane below as well as next to the vacuoles and blister. In conclusion, the authors present the first patient with GIST with blistering and skin fragility due to imatinib therapy. As a pathophysiological explanation the authors propose loss of laminin and collagen IV at the DEJ leading to basement membrane instability and blistering. This case also suggests additional features reminiscent of lichen sclerosus induced by imatinib, a drug which is actually known for its antifibrotic effects.
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36
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Klicks J, von Molitor E, Ertongur-Fauth T, Rudolf R, Hafner M. In vitro skin three-dimensional models and their applications. ACTA ACUST UNITED AC 2017. [DOI: 10.3233/jcb-179004] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Julia Klicks
- Mannheim University of Applied Sciences, Institute of Molecular and Cell Biology, Mannheim, Germany
| | - Elena von Molitor
- Mannheim University of Applied Sciences, Institute of Molecular and Cell Biology, Mannheim, Germany
| | | | - Rüdiger Rudolf
- Mannheim University of Applied Sciences, Institute of Molecular and Cell Biology, Mannheim, Germany
- Institute of Medical Technology, Heidelberg University, Heidelberg, Germany
| | - Mathias Hafner
- Mannheim University of Applied Sciences, Institute of Molecular and Cell Biology, Mannheim, Germany
- Institute of Medical Technology, Heidelberg University, Heidelberg, Germany
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37
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Matsuura-Hachiya Y, Arai KY, Muraguchi T, Sasaki T, Nishiyama T. Type IV collagen aggregates promote keratinocyte proliferation and formation of epidermal layer in human skin equivalents. Exp Dermatol 2017; 27:443-448. [PMID: 28266764 DOI: 10.1111/exd.13328] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2017] [Indexed: 01/20/2023]
Abstract
Type IV collagen isolated from lens capsule without enzymatic treatment is known to form a gel under physiological condition and influences cellular activities. In case of human keratinocytes, the suppression of proliferation on reconstituted type IV collagen gels was reported in monolayer culture. In this study, we examined effects of type IV collagen isolated from porcine lens capsule on epidermal formation in human skin equivalents (HSEs). Type IV collagen aggregates were prepared under the culture condition and the aggregates suppressed keratinocyte proliferation in monolayer culture as well as the culture on the gels. In HSEs, type IV collagen aggregates were reconstituted on the surface of contracted collagen gels containing human dermal fibroblasts and the keratinocytes were then cultured on the aggregates for 14 days. Interestingly, in HSEs with type IV collagen aggregates, the BrdU-positive keratinocytes were increased and the thickness of the epidermal layer was around twice than that of control culture. Epidermal differentiation markers were expressed in the upper layer of the epidermis and the defined deposition of human basement membrane components were increased at the dermal-epidermal junction. These results indicate that the type IV collagen aggregates stimulate the proliferation of basal keratinocytes and improve the stratification of epidermal layers in HSEs.
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Affiliation(s)
- Yuko Matsuura-Hachiya
- Scleroprotein Research Institute, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan
| | - Koji Y Arai
- Scleroprotein Research Institute, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan
| | - Taichi Muraguchi
- Pharmaceutical and Healthcare Research Laboratories, Fuji Film Co., Kaisei, Kanagawa, Japan
| | - Tasuku Sasaki
- Pharmaceutical and Healthcare Research Laboratories, Fuji Film Co., Kaisei, Kanagawa, Japan
| | - Toshio Nishiyama
- Scleroprotein Research Institute, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan
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38
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Stynes GD, Kiroff GK, Page RS, Morrison WA, Kirkland MA. Surface-bound collagen 4 is significantly more stable than collagen 1. J Biomed Mater Res A 2017; 105:1364-1373. [PMID: 28130865 DOI: 10.1002/jbm.a.36019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 12/31/2016] [Accepted: 01/24/2017] [Indexed: 02/04/2023]
Abstract
Collagen 1 (C1) is commonly used to improve biological responses to implant surfaces. Here, the stability of C1 was compared with collagen 4 (C4) on a mixed macrodiol polyurethane, both adsorbed and covalently bound via acetaldehyde glow discharge polymerization and reductive amination. Substrate specimens were incubated in solutions of C1 and C4. The strength of conjugation was tested by incubation in 8 M urea followed by enzyme linked immunosorbent assays to measure residual C1 and C4. The basal lamina protein, laminin-332 (L332) was superimposed via adsorption on C4-treated specimens. Keratinocytes were grown on untreated, C1-treated, C4-treated, and C4 + L332-treated specimens, followed by measurement of cell area, proliferation, and focal adhesion density. Adsorbed C4 was shown to be significantly more stable than C1 and covalent conjugation conferred even greater stability, with no degradation of C4 over twenty days in 8 M urea. Cell growth was similar for C1 and C4, with no additional benefit conferred by superimposition of L332. The greater resistance of C4 to degradation may be consequent to cysteine residues and disulphide bonds in its non-collagenous domains. The use of C4 on implants, rather than C1, may improve their long-term stability in tissues. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 1364-1373, 2017.
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Affiliation(s)
- Gil D Stynes
- Barwon Biomedical Research, University Hospital Geelong, Victoria, Australia
- Department of Surgery, St. Vincent's Hospital, University of Melbourne, Victoria, Australia
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Manufacturing Flagship, Melbourne, Victoria, Australia
- Institute for Frontier Materials, Deakin University, Geelong, Victoria, Australia
| | - George K Kiroff
- Barwon Biomedical Research, University Hospital Geelong, Victoria, Australia
- Department of Surgery, Queen Elizabeth Hospital, The University of Adelaide, Adelaide, South Australia, Australia
| | - Richard S Page
- Barwon Biomedical Research, University Hospital Geelong, Victoria, Australia
- School of Medicine, Deakin University, Geelong, Victoria, Australia
| | - Wayne A Morrison
- Department of Surgery, St. Vincent's Hospital, University of Melbourne, Victoria, Australia
| | - Mark A Kirkland
- Barwon Biomedical Research, University Hospital Geelong, Victoria, Australia
- Institute for Frontier Materials, Deakin University, Geelong, Victoria, Australia
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39
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Pham QL, Jang HJ, Kim KB. Anti‑wrinkle effect of fermented black ginseng on human fibroblasts. Int J Mol Med 2017; 39:681-686. [PMID: 28098856 DOI: 10.3892/ijmm.2017.2858] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 01/10/2017] [Indexed: 11/05/2022] Open
Abstract
Fermented black ginseng (FBG) is processed by the repeated steaming and drying of fresh ginseng followed by fermentation with Saccharomyces cerevisiae. It is known to possess anti‑oxidative effects. Skin wrinkle formation is associated with oxidative stress and inflammatory reactions. The aim of this study was to determine whether FBG possesses anti‑wrinkle activity using human fibroblasts (HS68). According to the Korea Ministry of Food and Drug Safety (MFDS) guidelines for the evaluation of the efficacy of functional anti‑wrinkle cosmetics, we attempted to elucidate the effects of FBG on type I procollagen, matrix metalloproteinase (MMP)‑1, MMP‑2, MMP‑9 and tissue inhibitor of metalloproteinase‑2 (TIMP‑2). In addition, the eye irritation potential of FBG was examined using the EpiOcular‑EIT kit. Our results revealed that FBG was not cytotoxic at concentrations <10 µg/ml. It was considered as safe for the eyes at concentrations of up to 100 µg/ml. Treatment with FBG at concentrations from 0.3 to 10 µg/ml significantly (P<0.05) increased the type I procollagen expression levels from 117.61±1.51 to 129.95±4.47% in the human fibroblasts. By contrast, FBG significantly (P<0.05) decreased the MMP‑1 expression level from 18.41±4.95 to 27.41±3.96%. FBG at 3 µg/ml also increased the expression of TIMP‑2 up to 154.55%. However, FBG at 10 µg/ml decreased the expression levels of MMP‑2 and MMP‑9 to 45.15 and 66.65%, respectively. These results suggest that FBG has potential anti‑wrinkle effects as a potential ingredient in cosmetics.
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Affiliation(s)
- Quynh Lien Pham
- Department of Pharmacy, College of Pharmacy, Dankook University, Cheonan, Chungnam 31116, Republic of Korea
| | - Hyun-Jun Jang
- Department of Pharmacy, College of Pharmacy, Dankook University, Cheonan, Chungnam 31116, Republic of Korea
| | - Kyu-Bong Kim
- Department of Pharmacy, College of Pharmacy, Dankook University, Cheonan, Chungnam 31116, Republic of Korea
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40
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Smith LE, Bryant C, Krasowska M, Cowin AJ, Whittle JD, MacNeil S, Short RD. Haptotatic Plasma Polymerized Surfaces for Rapid Tissue Regeneration and Wound Healing. ACS APPLIED MATERIALS & INTERFACES 2016; 8:32675-32687. [PMID: 27934156 DOI: 10.1021/acsami.6b11320] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Skin has a remarkable capacity for regeneration; however, with an ever aging population, there is a growing burden to the healthcare system from chronic wounds. Novel therapies are required to address the problems associated with nonhealing chronic wounds. Novel wound dressings that can encourage increased reepithelialization could help to reduce the burden of chronic wounds. A suite of chemically defined surfaces have been produced using plasma polymerization, and the ability of these surfaces to support the growth of primary human skin cells has been assessed. Additionally, the ability of these surfaces to modulate cell migration and morphology has also been investigated. Keratinocytes and endothelial cells were extremely sensitive to surface chemistry showing increased viability and migration with an increased number of carboxylic acid functional groups. Fibroblasts proved to be more tolerant to changes in surface chemistry; however, these cells migrated fastest over amine-functionalized surfaces. The novel combination of comprehensive chemical characterization coupled with the focus on cell migration provides a unique insight into how a material's physicochemical properties affect cell migration.
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Affiliation(s)
- Louise E Smith
- Wound Management Innovation Cooperative Research Centre , Brisbane 4059, Queensland, Australia
- Future Industries Institute, University of South Australia , Adelaide 5095, South Australia, Australia
| | - Christian Bryant
- Wound Management Innovation Cooperative Research Centre , Brisbane 4059, Queensland, Australia
| | - Marta Krasowska
- Future Industries Institute, University of South Australia , Adelaide 5095, South Australia, Australia
- School of Information Technology and Mathematical Sciences, University of South Australia , Adelaide, 5095, South Australia, Australia
| | - Allison J Cowin
- Wound Management Innovation Cooperative Research Centre , Brisbane 4059, Queensland, Australia
- Future Industries Institute, University of South Australia , Adelaide 5095, South Australia, Australia
| | - Jason D Whittle
- Wound Management Innovation Cooperative Research Centre , Brisbane 4059, Queensland, Australia
- School of Engineering, University of South Australia , Adelaide 5095, South Australia, Australia
| | - Sheila MacNeil
- Kroto Research Institute, University of Sheffield , Sheffield S3 7HQ, South Yorkshire, United Kingdom
| | - Robert D Short
- Wound Management Innovation Cooperative Research Centre , Brisbane 4059, Queensland, Australia
- Future Industries Institute, University of South Australia , Adelaide 5095, South Australia, Australia
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41
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Vigier S, Gagnon H, Bourgade K, Klarskov K, Fülöp T, Vermette P. Composition and organization of the pancreatic extracellular matrix by combined methods of immunohistochemistry, proteomics and scanning electron microscopy. Curr Res Transl Med 2016; 65:31-39. [PMID: 28340694 DOI: 10.1016/j.retram.2016.10.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 09/30/2016] [Accepted: 10/07/2016] [Indexed: 12/29/2022]
Abstract
The epidemic expansion of diabetes is a major concern of public health. A promising treatment is the transplantation of islets of Langerhans isolated from the whole pancreas but the yields of islets isolation and the rates of successful engraftments still have to be improved to make this therapy effective. The extracellular matrix (ECM) of the pancreatic tissue is partially lost during the isolation process and a comprehensive knowledge of the pancreatic ECM composition and organization could identify targets to improve islets isolation and transplantation or highlight new therapeutics for pancreatic diseases. The organization, composition and three-dimensional architecture of the pancreatic ECM were analysed in mouse and pig by three different techniques. Laminin α-4 and β-2 chains are localized by immunohistochemistry in the exocrine tissue and inside islets of mouse pancreas but not around islets that are surrounded by an ECM made of collagen type IV and type V. Collagen type I, III, and VI were identified by proteomics as specific constituents of the pig pancreatic ECM along with the low-abundance isoforms α3(IV) α4(IV) α5(IV) and α1(V) α2(V) α3(V) of collagen type IV and type V respectively. The three-dimensional ECM architecture is analysed on decellularized mouse pancreas by scanning electron microscopy and is organized in honeycomb structures made of thin ECM fibers assembled in thicker bundles. The combination of immunohistochemistry, proteomics and scanning electron microscopy gives complementary perspective on the pancreatic ECM composition and organization. It represents a valuable toolbox for deeper investigations of ECMs and proposes clues in tissue engineering of the pancreas.
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Affiliation(s)
- S Vigier
- Department of Chemical and Biotechnological Engineering, Université de Sherbrooke, 2500, boulevard de l'Université, J1K 2R1 Sherbrooke, Québec, Canada.
| | - H Gagnon
- PhenoSwitch Bioscience, Faculty of Medicine and Health Sciences, Université de Sherbrooke, J1H 5N4 Sherbrooke, Québec, Canada
| | - K Bourgade
- Research Center on Aging, 1036, rue Belvédère Sud, J1H 4C4 Sherbrooke, Québec, Canada
| | - K Klarskov
- Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, J1H 5N4 Sherbrooke, Québec, Canada
| | - T Fülöp
- Research Center on Aging, 1036, rue Belvédère Sud, J1H 4C4 Sherbrooke, Québec, Canada
| | - P Vermette
- Department of Chemical and Biotechnological Engineering, Université de Sherbrooke, 2500, boulevard de l'Université, J1K 2R1 Sherbrooke, Québec, Canada
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Benny P, Badowski C, Lane EB, Raghunath M. Improving 2D and 3D Skin In Vitro Models Using Macromolecular Crowding. J Vis Exp 2016. [PMID: 27585070 DOI: 10.3791/53642] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
The glycoprotein family of collagens represents the main structural proteins in the human body, and are key components of biomaterials used in modern tissue engineering. A technical bottleneck is the deposition of collagen in vitro, as it is notoriously slow, resulting in sub-optimal formation of connective tissue and subsequent tissue cohesion, particularly in skin models. Here, we describe a method which involves the addition of differentially-sized sucrose co-polymers to skin cultures to generate macromolecular crowding (MMC), which results in a dramatic enhancement of collagen deposition. Particularly, dermal fibroblasts deposited a significant amount of collagen I/IV/VII and fibronectin under MMC in comparison to controls. The protocol also describes a method to decellularize crowded cell layers, exposing significant amounts of extracellular matrix (ECM) which were retained on the culture surface as evidenced by immunocytochemistry. Total matrix mass and distribution pattern was studied using interference reflection microscopy. Interestingly, fibroblasts, keratinocytes and co-cultures produced cell-derived matrices (CDM) of varying composition and morphology. CDM could be used as "bio-scaffolds" for secondary cell seeding, where the current use of coatings or scaffolds, typically from xenogenic animal sources, can be avoided, thus moving towards more clinically relevant applications. In addition, this protocol describes the application of MMC during the submerged phase of a 3D-organotypic skin co-culture model which was sufficient to enhance ECM deposition in the dermo-epidermal junction (DEJ), in particular, collagen VII, the major component of anchoring fibrils. Electron microscopy confirmed the presence of anchoring fibrils in cultures developed with MMC, as compared to controls. This is significant as anchoring fibrils tether the dermis to the epidermis, hence, having a pre-formed mature DEJ may benefit skin graft recipients in terms of graft stability and overall wound healing. Furthermore, culture time was condensed from 5 weeks to 3 weeks to obtain a mature construct, when using MMC, reducing costs.
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Affiliation(s)
- Paula Benny
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore; Epithelial Biology Laboratory, Institute of Medical Biology, A*STAR;
| | - Cedric Badowski
- Epithelial Biology Laboratory, Institute of Medical Biology, A*STAR
| | - E Birgitte Lane
- Epithelial Biology Laboratory, Institute of Medical Biology, A*STAR
| | - Michael Raghunath
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore; Epithelial Biology Laboratory, Institute of Medical Biology, A*STAR; Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore
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43
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Hou X, Liu S, Wang M, Wiraja C, Huang W, Chan P, Tan T, Xu C. Layer-by-Layer 3D Constructs of Fibroblasts in Hydrogel for Examining Transdermal Penetration Capability of Nanoparticles. SLAS Technol 2016; 22:447-453. [PMID: 27325107 DOI: 10.1177/2211068216655753] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Nanoparticles are emerging transdermal delivery systems. Their size and surface properties determine their efficacy and efficiency to penetrate through the skin layers. This work utilizes three-dimensional (3D) bioprinting technology to generate a simplified artificial skin model to rapidly screen nanoparticles for their transdermal penetration ability. Specifically, this model is built through layer-by-layer alternate printing of blank collagen hydrogel and fibroblasts. Through controlling valve on-time, the spacing between printing lines could be accurately tuned, which could enable modulation of cell infiltration in the future. To confirm the effectiveness of this platform, a 3D construct with one layer of fibroblasts sandwiched between two layers of collagen hydrogel is used to screen silica nanoparticles with different surface charges for their penetration ability, with positively charged nanoparticles demonstrating deeper penetration, consistent with the observation from an existing study involving living skin tissue.
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Affiliation(s)
- Xiaochun Hou
- 1 School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore.,2 Key Laboratory for Organic Electronics and Information Displays, Nanjing University of Posts and Telecommunications, Nanjing, China
| | - Shiying Liu
- 1 School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore
| | - Min Wang
- 1 School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore
| | - Christian Wiraja
- 1 School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore
| | - Wei Huang
- 2 Key Laboratory for Organic Electronics and Information Displays, Nanjing University of Posts and Telecommunications, Nanjing, China
| | - Peggy Chan
- 3 Faculty of Science Engineering & Technology, Swinburne University of Australia, Hawthorn, Australia
| | - Timothy Tan
- 1 School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore
| | - Chenjie Xu
- 1 School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore.,4 NTU-Northwestern Institute for Nanomedicine, Nanyang Technological University, Singapore
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44
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Chen SJ, Lin PW, Lin HP, Huang SS, Lai FJ, Sheu HM, Hsu LJ, Chang NS. UV irradiation/cold shock-mediated apoptosis is switched to bubbling cell death at low temperatures. Oncotarget 2016; 6:8007-18. [PMID: 25779665 PMCID: PMC4480731 DOI: 10.18632/oncotarget.3153] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Accepted: 01/16/2015] [Indexed: 02/06/2023] Open
Abstract
When COS7 fibroblasts and other cells were exposed to UVC irradiation and cold shock at 4°C for 5 min, rapid upregulation and nuclear accumulation of NOS2, p53, WWOX, and TRAF2 occurred in 10-30 min. By time-lapse microscopy, an enlarging gas bubble containing nitric oxide (NO) was formed in the nucleus in each cell that finally popped out to cause "bubbling death". Bubbling occurred effectively at 4 and 22°C, whereas DNA fragmentation was markedly blocked at 4°C. When temperature was increased to 37°C, bubbling was retarded and DNA fragmentation occurred in 1 hr, suggesting that bubbling death is switched to apoptosis with increasing temperatures. Bubbling occurred prior to nuclear uptake of propidium iodide and DAPI stains. Arginine analog Nω-LAME inhibited NO synthase NOS2 and significantly suppressed the bubbling death. Unlike apoptosis, there were no caspase activation and flip-over of membrane phosphatidylserine (PS) during bubbling death. Bubbling death was significantly retarded in Wwox knockout MEF cells, as well as in cells overexpressing TRAF2 and dominant-negative p53. Together, UV/cold shock induces bubbling death at 4°C and the event is switched to apoptosis at 37°C. Presumably, proapoptotic WWOX and p53 block the protective TRAF2 to execute the bubbling death.
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Affiliation(s)
- Szu-Jung Chen
- Institute of Molecular Medicine, National Cheng Kung University College of Medicine, Tainan, Taiwan, ROC
| | - Pei-Wen Lin
- Institute of Molecular Medicine, National Cheng Kung University College of Medicine, Tainan, Taiwan, ROC
| | - Hsin-Ping Lin
- Institute of Molecular Medicine, National Cheng Kung University College of Medicine, Tainan, Taiwan, ROC
| | - Shenq-Shyang Huang
- Institute of Molecular Medicine, National Cheng Kung University College of Medicine, Tainan, Taiwan, ROC
| | - Feng-Jie Lai
- Department of Dermatology, Chi-Mei Medical Center, Tainan, Taiwan, ROC
| | - Hamm-Ming Sheu
- Department of Dermatology, National Cheng Kung University College of Medicine, Tainan, Taiwan, ROC
| | - Li-Jin Hsu
- Department of Medical Laboratory Science and Biotechnology, National Cheng Kung University Medical College, Tainan, Taiwan, ROC.,Center of Infectious Disease and Signaling Research, National Cheng Kung University Medical College, Tainan, Taiwan, ROC
| | - Nan-Shan Chang
- Institute of Molecular Medicine, National Cheng Kung University College of Medicine, Tainan, Taiwan, ROC.,Center of Infectious Disease and Signaling Research, National Cheng Kung University Medical College, Tainan, Taiwan, ROC.,Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan, Taiwan, ROC.,Department of Neurochemistry, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, New York, NY, USA.,Department of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, NY, USA
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45
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Zhang YS, Xia Y. Multiple facets for extracellular matrix mimicking in regenerative medicine. Nanomedicine (Lond) 2016; 10:689-92. [PMID: 25816873 DOI: 10.2217/nnm.15.10] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Yu Shrike Zhang
- Biomaterials Innovation Research Center, Department of Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
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46
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Comparison of the histological morphology between normal skin and scar tissue. ACTA ACUST UNITED AC 2016; 36:265-269. [PMID: 27072974 DOI: 10.1007/s11596-016-1578-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Revised: 01/21/2016] [Indexed: 01/07/2023]
Abstract
Skin wound healing is a complex event, and interrupted wound healing process could lead to scar formation. The aim of this study was to examine the morphological changes of scar tissue. Pathological staining (HE staining, Masson's trichrome staining, methenamine silver staining) was used to evaluate the morphological changes of regenerating epidermis in normal skin and scar tissue, and immunofluorescence staining to detect the expression of collagen IV, a component of basement membrane (BM), and the expression of integrinβ4, a receptor for BM laminins. Additionally, the expression of CK14, CK5, and CK10 was measured to evaluate the proliferation and differentiation of keratinocytes in normal skin and scar tissue. The results showed that the structure of the skin was histologically changed in scar tissue. Collagen IV, expressed under the epidermis of normal skin, was reduced distinctly in scar tissue. Integrinβ4, expressed in the basal layer of normal skin, was found absent in the basal layer of scar tissue. Additionally, it was found that keratinocytes in scarring epidermis were more proliferative than in normal skin. These results indicate that during the skin wound healing, altered formation of BM may affect the proliferation of keratinocytes, reepithelial and tissue remodeling, and then result in scar formation. Thus, remodeling BM structure during wound repair may be beneficial for improving healing in cutaneous wounds during clinical practice.
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47
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Uenoyama A, Kakizaki I, Shiomi A, Saito N, Hara Y, Saito T, Ohnuki H, Kato H, Takagi R, Maeda T, Izumi K. Effects of C-xylopyranoside derivative on epithelial regeneration in an in vitro 3D oral mucosa model. Biosci Biotechnol Biochem 2016; 80:1344-55. [PMID: 26966997 DOI: 10.1080/09168451.2016.1153957] [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] [Indexed: 10/22/2022]
Abstract
Identifying substandard tissue-engineered oral mucosa grafts with a poor epithelium before clinical use is critical to ensure quality assurance/control in regenerative medicine, leading to success of grafting. This study investigated the effects of one of the C-xylopyranoside derivatives, β-D-xylopyranoside-n-propane-2-one (XPP), on oral epithelial regeneration. Using a three-dimensional oral mucosa model, we analyzed changes of the epithelial structure, glycosaminoglycan (GAG) synthesis, the expression levels of basement membrane zone markers, and substrates of Akt/mTOR signaling. Compared with the control, 2 mM XPP treatment increased the mean and minimal epithelial thickness, and reduced the variation of epithelial thickness. It also stimulated expressions of decorin and syndecan-1 with change of GAG amount and/or composition, and enhanced the expressions of integrin α6, CD44, and Akt/mTOR signaling substrates. These findings suggest that XPP supplementation contributes to consistent epithelial regeneration. Moreover, upregulation of those markers may play a role in increasing the quality of the oral mucosal epithelium.
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Affiliation(s)
- Atsushi Uenoyama
- a Division of Oral and Maxillofacial Surgery, Graduate School of Medical and Dental Sciences , Niigata University , Niigata , Japan.,b Division of Oral Anatomy, Graduate School of Medical and Dental Sciences , Niigata University , Niigata , Japan
| | - Ikuko Kakizaki
- c Department of Glycotechnology, Center for Advanced Medical Research , Hirosaki University, Graduate School of Medicine , Hirosaski , Japan
| | - Aki Shiomi
- d Division of Dental Educational Research Development, Graduate School of Medical and Dental Sciences , Niigata University , Niigata , Japan
| | - Naoaki Saito
- b Division of Oral Anatomy, Graduate School of Medical and Dental Sciences , Niigata University , Niigata , Japan
| | - Yuko Hara
- a Division of Oral and Maxillofacial Surgery, Graduate School of Medical and Dental Sciences , Niigata University , Niigata , Japan.,e Division of Biomimetics, Graduate School of Medical and Dental Sciences , Niigata University , Niigata, Japan
| | - Taro Saito
- a Division of Oral and Maxillofacial Surgery, Graduate School of Medical and Dental Sciences , Niigata University , Niigata , Japan
| | - Hisashi Ohnuki
- a Division of Oral and Maxillofacial Surgery, Graduate School of Medical and Dental Sciences , Niigata University , Niigata , Japan
| | - Hiroko Kato
- e Division of Biomimetics, Graduate School of Medical and Dental Sciences , Niigata University , Niigata, Japan.,f Research Center for Advanced Oral Science, Graduate School of Medical and Dental Sciences , Niigata University , Niigata , Japan
| | - Ritsuo Takagi
- a Division of Oral and Maxillofacial Surgery, Graduate School of Medical and Dental Sciences , Niigata University , Niigata , Japan
| | - Takeyasu Maeda
- b Division of Oral Anatomy, Graduate School of Medical and Dental Sciences , Niigata University , Niigata , Japan.,f Research Center for Advanced Oral Science, Graduate School of Medical and Dental Sciences , Niigata University , Niigata , Japan
| | - Kenji Izumi
- e Division of Biomimetics, Graduate School of Medical and Dental Sciences , Niigata University , Niigata, Japan
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48
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Yang S, Sun Y, Geng Z, Ma K, Sun X, Fu X. Abnormalities in the basement membrane structure promote basal keratinocytes in the epidermis of hypertrophic scars to adopt a proliferative phenotype. Int J Mol Med 2016; 37:1263-73. [PMID: 26986690 PMCID: PMC4829134 DOI: 10.3892/ijmm.2016.2519] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 02/29/2016] [Indexed: 12/23/2022] Open
Abstract
The majority of studies on scar formation have mainly focused on the dermis and little is known of the involvement of the epidermis. Previous research has demonstrated that the scar tissue-derived keratinocytes are different from normal cells at both the genetic and cell biological levels; however, the mechanisms responsible for the fundamental abnormalities in keratinocytes during scar development remain elusive. For this purpose, in this study, we used normal, wound edge and hypertrophic scar tissue to examine the morphological changes which occur during epidermal regeneration as part of the wound healing process and found that the histological structure of hypertrophic scar tissues differed from that of normal skin, with a significant increase in epidermal thickness. Notably, staining of the basement membrane (BM) appeared to be absent in the scar tissues. Moreover, immunofluorescence staining for cytokeratin (CK)10, CK14, CK5, CK19 and integrin-β1 indicated the differential expression of cell markers in the epidermal keratinocytes among the normal, wound edge and hypertrophic scar tissues, which corresponded with the altered BM structures. By using a panel of proteins associated with BM components, we validated our hypothesis that the BM plays a significant role in regulating the cell fate decision of epidermal keratinocytes during skin wound healing. Alterations in the structure of the BM promote basal keratinocytes to adopt a proliferative phenotype both in vivo and in vitro.
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Affiliation(s)
- Shaowei Yang
- Wound Healing and Cell Biology Laboratory, Institute of Basic Medical Science, Trauma Center of Postgraduate Medical School, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Yexiao Sun
- Key Research Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, The First Affiliated Hospital to the Chinese PLA General Hospital, Beijing 100048, P.R. China
| | - Zhijun Geng
- Key Research Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, The First Affiliated Hospital to the Chinese PLA General Hospital, Beijing 100048, P.R. China
| | - Kui Ma
- Key Research Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, The First Affiliated Hospital to the Chinese PLA General Hospital, Beijing 100048, P.R. China
| | - Xiaoyan Sun
- Wound Healing and Cell Biology Laboratory, Institute of Basic Medical Science, Trauma Center of Postgraduate Medical School, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Xiaobing Fu
- Wound Healing and Cell Biology Laboratory, Institute of Basic Medical Science, Trauma Center of Postgraduate Medical School, Chinese PLA General Hospital, Beijing 100853, P.R. China
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Chua AWC, Khoo YC, Tan BK, Tan KC, Foo CL, Chong SJ. Skin tissue engineering advances in severe burns: review and therapeutic applications. BURNS & TRAUMA 2016; 4:3. [PMID: 27574673 PMCID: PMC4963933 DOI: 10.1186/s41038-016-0027-y] [Citation(s) in RCA: 148] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 01/11/2016] [Indexed: 01/13/2023]
Abstract
Current advances in basic stem cell research and tissue engineering augur well for the development of improved cultured skin tissue substitutes: a class of products that is still fraught with limitations for clinical use. Although the ability to grow autologous keratinocytes in-vitro from a small skin biopsy into sheets of stratified epithelium (within 3 to 4 weeks) helped alleviate the problem of insufficient donor site for extensive burn, many burn units still have to grapple with insufficient skin allografts which are used as intermediate wound coverage after burn excision. Alternatives offered by tissue-engineered skin dermal replacements to meet emergency demand have been used fairly successfully. Despite the availability of these commercial products, they all suffer from the same problems of extremely high cost, sub-normal skin microstructure and inconsistent engraftment, especially in full thickness burns. Clinical practice for severe burn treatment has since evolved to incorporate these tissue-engineered skin substitutes, usually as an adjunct to speed up epithelization for wound closure and/or to improve quality of life by improving the functional and cosmetic results long-term. This review seeks to bring the reader through the beginnings of skin tissue engineering, the utilization of some of the key products developed for the treatment of severe burns and the hope of harnessing stem cells to improve on current practice.
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Affiliation(s)
- Alvin Wen Choong Chua
- Singapore General Hospital, Department of Plastic, Reconstructive and Aesthetic Surgery, 20 College Road, Academia Level 4, Singapore, 169845 Singapore ; Singapore General Hospital, Skin Bank Unit, Block 4 Level 3 Room 15, Outram Road, Singapore, 169608 Singapore ; Transplant Tissue Centre, c/o Skin Bank Unit, Singapore General Hospital, Block 4 Level 3 Room A7, Outram Road, Singapore, 169608 Singapore
| | - Yik Cheong Khoo
- Singapore General Hospital, Skin Bank Unit, Block 4 Level 3 Room 15, Outram Road, Singapore, 169608 Singapore ; Transplant Tissue Centre, c/o Skin Bank Unit, Singapore General Hospital, Block 4 Level 3 Room A7, Outram Road, Singapore, 169608 Singapore
| | - Bien Keem Tan
- Singapore General Hospital, Department of Plastic, Reconstructive and Aesthetic Surgery, 20 College Road, Academia Level 4, Singapore, 169845 Singapore ; Singapore General Hospital, Skin Bank Unit, Block 4 Level 3 Room 15, Outram Road, Singapore, 169608 Singapore ; Transplant Tissue Centre, c/o Skin Bank Unit, Singapore General Hospital, Block 4 Level 3 Room A7, Outram Road, Singapore, 169608 Singapore
| | - Kok Chai Tan
- Singapore General Hospital, Department of Plastic, Reconstructive and Aesthetic Surgery, 20 College Road, Academia Level 4, Singapore, 169845 Singapore ; Singapore General Hospital, Skin Bank Unit, Block 4 Level 3 Room 15, Outram Road, Singapore, 169608 Singapore
| | - Chee Liam Foo
- Singapore General Hospital, Department of Plastic, Reconstructive and Aesthetic Surgery, 20 College Road, Academia Level 4, Singapore, 169845 Singapore ; Singapore General Hospital, Skin Bank Unit, Block 4 Level 3 Room 15, Outram Road, Singapore, 169608 Singapore
| | - Si Jack Chong
- Singapore General Hospital, Department of Plastic, Reconstructive and Aesthetic Surgery, 20 College Road, Academia Level 4, Singapore, 169845 Singapore ; Singapore General Hospital, Skin Bank Unit, Block 4 Level 3 Room 15, Outram Road, Singapore, 169608 Singapore ; Transplant Tissue Centre, c/o Skin Bank Unit, Singapore General Hospital, Block 4 Level 3 Room A7, Outram Road, Singapore, 169608 Singapore
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Donnarumma G, Paoletti I, Fusco A, Perfetto B, Buommino E, de Gregorio V, Baroni A. β-Defensins: Work in Progress. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 901:59-76. [DOI: 10.1007/5584_2015_5016] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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