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Sowbhagya R, Muktha H, Ramakrishnaiah TN, Surendra AS, Sushma SM, Tejaswini C, Roopini K, Rajashekara S. Collagen as the extracellular matrix biomaterials in the arena of medical sciences. Tissue Cell 2024; 90:102497. [PMID: 39059131 DOI: 10.1016/j.tice.2024.102497] [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: 01/26/2024] [Revised: 06/26/2024] [Accepted: 07/23/2024] [Indexed: 07/28/2024]
Abstract
Collagen is a multipurpose material that has several applications in the health care, dental care, and pharmaceutical industries. Crosslinked compacted solids or lattice-like gels can be made from collagen. Biocompatibility, biodegradability, and wound-healing properties make collagen a popular scaffold material for cardiovascular, dentistry, and bone tissue engineering. Due to its essential role in the control of several of these processes, collagen has been employed as a wound-healing adjunct. It forms a major component of the extracellular matrix and regulates wound healing in its fibrillar or soluble forms. Collagen supports cardiovascular and other soft tissues. Oral wounds have been dressed with resorbable forms of collagen for closure of graft and extraction sites, and to aid healing. This present review is concentrated on the use of collagen in bone regeneration, wound healing, cardiovascular tissue engineering, and dentistry.
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Affiliation(s)
- Ramachandregowda Sowbhagya
- Department of Biotechnology and Genetics, M.S. Ramaiah College of Arts, Science and Commerce, 7th Main Rd, MSRIT, M S R Nagar, Mathikere, Bengaluru, Karnataka 560054, India
| | - Harsha Muktha
- Department of Biotechnology and Genetics, M.S. Ramaiah College of Arts, Science and Commerce, 7th Main Rd, MSRIT, M S R Nagar, Mathikere, Bengaluru, Karnataka 560054, India
| | - Thippenahalli Narasimhaiah Ramakrishnaiah
- Department of Biotechnology and Genetics, M.S. Ramaiah College of Arts, Science and Commerce, 7th Main Rd, MSRIT, M S R Nagar, Mathikere, Bengaluru, Karnataka 560054, India
| | - Adagur Sudarshan Surendra
- Department of Biochemistry, M.S. Ramaiah College of Arts, Science and Commerce, 7th Main Rd, MSRIT, M S R Nagar, Mathikere, Bengaluru, Karnataka 560054, India
| | - Subhas Madinoor Sushma
- Department of Biotechnology and Genetics, M.S. Ramaiah College of Arts, Science and Commerce, 7th Main Rd, MSRIT, M S R Nagar, Mathikere, Bengaluru, Karnataka 560054, India
| | - Chandrashekar Tejaswini
- Department of Biotechnology and Genetics, M.S. Ramaiah College of Arts, Science and Commerce, 7th Main Rd, MSRIT, M S R Nagar, Mathikere, Bengaluru, Karnataka 560054, India
| | - Karunakaran Roopini
- Department of Biotechnology and Genetics, M.S. Ramaiah College of Arts, Science and Commerce, 7th Main Rd, MSRIT, M S R Nagar, Mathikere, Bengaluru, Karnataka 560054, India
| | - Somashekara Rajashekara
- Department of Studies in Zoology, Centre for Applied Genetics, Bangalore University, Jnana Bharathi Campus, Off Mysuru Road, Bengaluru, Karnataka 560056, India.
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Ismayilzada N, Tarar C, Dabbagh SR, Tokyay BK, Dilmani SA, Sokullu E, Abaci HE, Tasoglu S. Skin-on-a-chip technologies towards clinical translation and commercialization. Biofabrication 2024; 16:042001. [PMID: 38964314 DOI: 10.1088/1758-5090/ad5f55] [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: 09/19/2023] [Accepted: 07/04/2024] [Indexed: 07/06/2024]
Abstract
Skin is the largest organ of the human body which plays a critical role in thermoregulation, metabolism (e.g. synthesis of vitamin D), and protection of other organs from environmental threats, such as infections, microorganisms, ultraviolet radiation, and physical damage. Even though skin diseases are considered to be less fatal, the ubiquity of skin diseases and irritation caused by them highlights the importance of skin studies. Furthermore, skin is a promising means for transdermal drug delivery, which requires a thorough understanding of human skin structure. Current animal andin vitrotwo/three-dimensional skin models provide a platform for disease studies and drug testing, whereas they face challenges in the complete recapitulation of the dynamic and complex structure of actual skin tissue. One of the most effective methods for testing pharmaceuticals and modeling skin diseases are skin-on-a-chip (SoC) platforms. SoC technologies provide a non-invasive approach for examining 3D skin layers and artificially creating disease models in order to develop diagnostic or therapeutic methods. In addition, SoC models enable dynamic perfusion of culture medium with nutrients and facilitate the continuous removal of cellular waste to further mimic thein vivocondition. Here, the article reviews the most recent advances in the design and applications of SoC platforms for disease modeling as well as the analysis of drugs and cosmetics. By examining the contributions of different patents to the physiological relevance of skin models, the review underscores the significant shift towards more ethical and efficient alternatives to animal testing. Furthermore, it explores the market dynamics ofin vitroskin models and organ-on-a-chip platforms, discussing the impact of legislative changes and market demand on the development and adoption of these advanced research tools. This article also identifies the existing obstacles that hinder the advancement of SoC platforms, proposing directions for future improvements, particularly focusing on the journey towards clinical adoption.
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Affiliation(s)
- Nilufar Ismayilzada
- Department of Mechanical Engineering, Koç University, Istanbul 34450, Turkey
| | - Ceren Tarar
- Department of Mechanical Engineering, Koç University, Istanbul 34450, Turkey
| | | | - Begüm Kübra Tokyay
- Koç University Research Center for Translational Medicine, Koç University, Istanbul 34450, Turkey
| | - Sara Asghari Dilmani
- Koç University Research Center for Translational Medicine, Koç University, Istanbul 34450, Turkey
| | - Emel Sokullu
- School of Medicine, Koç University, Istanbul 34450, Turkey
| | - Hasan Erbil Abaci
- Department of Dermatology, Columbia University, New York City, NY, United States of America
| | - Savas Tasoglu
- Department of Mechanical Engineering, Koç University, Istanbul 34450, Turkey
- Boğaziçi Institute of Biomedical Engineering, Boğaziçi University, Istanbul 34684, Turkey
- Koç University Research Center for Translational Medicine, Koç University, Istanbul 34450, Turkey
- Koç University Arçelik Research Center for Creative Industries (KUAR), Koç University, Istanbul 34450, Turkey
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Naba A. 10 years of extracellular matrix proteomics: Accomplishments, challenges, and future perspectives. Mol Cell Proteomics 2023; 22:100528. [PMID: 36918099 PMCID: PMC10152135 DOI: 10.1016/j.mcpro.2023.100528] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 03/03/2023] [Accepted: 03/06/2023] [Indexed: 03/13/2023] Open
Abstract
The extracellular matrix (ECM) is a complex assembly of hundreds of proteins forming the architectural scaffold of multicellular organisms. In addition to its structural role, the ECM conveys signals orchestrating cellular phenotypes. Alterations of ECM composition, abundance, structure, or mechanics, have been linked to diseases and disorders affecting all physiological systems, including fibrosis and cancer. Deciphering the protein composition of the ECM and how it changes in pathophysiological contexts is thus the first step toward understanding the roles of the ECM in health and disease and toward the development of therapeutic strategies to correct disease-causing ECM alterations. Potentially, the ECM also represents a vast, yet untapped reservoir of disease biomarkers. ECM proteins are characterized by unique biochemical properties that have hindered their study: they are large, heavily and uniquely post-translationally modified, and highly insoluble. Overcoming these challenges, we and others have devised mass-spectrometry-based proteomic approaches to define the ECM composition, or "matrisome", of tissues. This review provides a historical overview of ECM proteomics research and presents the latest advances that now allow the profiling of the ECM of healthy and diseased tissues. The second part highlights recent examples illustrating how ECM proteomics has emerged as a powerful discovery pipeline to identify prognostic cancer biomarkers. The third part discusses remaining challenges limiting our ability to translate findings to clinical application and proposes approaches to overcome them. Last, the review introduces readers to resources available to facilitate the interpretation of ECM proteomics datasets. The ECM was once thought to be impenetrable. MS-based proteomics has proven to be a powerful tool to decode the ECM. In light of the progress made over the past decade, there are reasons to believe that the in-depth exploration of the matrisome is within reach and that we may soon witness the first translational application of ECM proteomics.
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Affiliation(s)
- Alexandra Naba
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL 60612, USA; University of Illinois Cancer Center, Chicago, IL 60612, USA.
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Jain P, Rauer SB, Möller M, Singh S. Mimicking the Natural Basement Membrane for Advanced Tissue Engineering. Biomacromolecules 2022; 23:3081-3103. [PMID: 35839343 PMCID: PMC9364315 DOI: 10.1021/acs.biomac.2c00402] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
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Advancements in the field of tissue engineering have
led to the
elucidation of physical and chemical characteristics of physiological
basement membranes (BM) as specialized forms of the extracellular
matrix. Efforts to recapitulate the intricate structure and biological
composition of the BM have encountered various advancements due to
its impact on cell fate, function, and regulation. More attention
has been paid to synthesizing biocompatible and biofunctional fibrillar
scaffolds that closely mimic the natural BM. Specific modifications
in biomimetic BM have paved the way for the development of in vitro models like alveolar-capillary barrier, airway
models, skin, blood-brain barrier, kidney barrier, and metastatic
models, which can be used for personalized drug screening, understanding
physiological and pathological pathways, and tissue implants. In this
Review, we focus on the structure, composition, and functions of in vivo BM and the ongoing efforts to mimic it synthetically.
Light has been shed on the advantages and limitations of various forms
of biomimetic BM scaffolds including porous polymeric membranes, hydrogels,
and electrospun membranes This Review further elaborates and justifies
the significance of BM mimics in tissue engineering, in particular
in the development of in vitro organ model systems.
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Affiliation(s)
- Puja Jain
- DWI-Leibniz-Institute for Interactive Materials e.V, Aachen 52074, Germany
| | | | - Martin Möller
- DWI-Leibniz-Institute for Interactive Materials e.V, Aachen 52074, Germany
| | - Smriti Singh
- Max-Planck-Institute for Medical Research, Heidelberg 69028, Germany
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Konop M, Rybka M, Drapała A. Keratin Biomaterials in Skin Wound Healing, an Old Player in Modern Medicine: A Mini Review. Pharmaceutics 2021; 13:2029. [PMID: 34959311 PMCID: PMC8705570 DOI: 10.3390/pharmaceutics13122029] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/20/2021] [Accepted: 11/26/2021] [Indexed: 12/26/2022] Open
Abstract
Impaired wound healing is a major medical problem. To solve it, researchers around the world have turned their attention to the use of tissue-engineered products to aid in skin regeneration in case of acute and chronic wounds. One of the primary goals of tissue engineering and regenerative medicine is to develop a matrix or scaffold system that mimics the structure and function of native tissue. Keratin biomaterials derived from wool, hair, and bristle have been the subjects of active research in the context of tissue regeneration for over a decade. Keratin derivatives, which can be either soluble or insoluble, are utilized as wound dressings since keratins are dynamically up-regulated and needed in skin wound healing. Tissue biocompatibility, biodegradability, mechanical durability, and natural abundance are only a few of the keratin biomaterials' properties, making them excellent wound dressing materials to treat acute and chronic wounds. Several experimental and pre-clinical studies described the beneficial effects of the keratin-based wound dressing in faster wound healing. This review focuses exclusively on the biomedical application of a different type of keratin biomaterials as a wound dressing in pre-clinical and clinical conditions.
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Affiliation(s)
- Marek Konop
- Laboratory of Center for Preclinical Research, Department of Experimental Physiology and Pathophysiology, Medical University of Warsaw, 02-106 Warsaw, Poland; (M.R.); (A.D.)
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Aleemardani M, Trikić MZ, Green NH, Claeyssens F. The Importance of Mimicking Dermal-Epidermal Junction for Skin Tissue Engineering: A Review. Bioengineering (Basel) 2021; 8:bioengineering8110148. [PMID: 34821714 PMCID: PMC8614934 DOI: 10.3390/bioengineering8110148] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/14/2021] [Accepted: 10/16/2021] [Indexed: 12/11/2022] Open
Abstract
There is a distinct boundary between the dermis and epidermis in the human skin called the basement membrane, a dense collagen network that creates undulations of the dermal-epidermal junction (DEJ). The DEJ plays multiple roles in skin homeostasis and function, namely, enhancing the adhesion and physical interlock of the layers, creating niches for epidermal stem cells, regulating the cellular microenvironment, and providing a physical boundary layer between fibroblasts and keratinocytes. However, the primary role of the DEJ has been determined as skin integrity; there are still aspects of it that are poorly investigated. Tissue engineering (TE) has evolved promising skin regeneration strategies and already developed TE scaffolds for clinical use. However, the currently available skin TE equivalents neglect to replicate the DEJ anatomical structures. The emergent ability to produce increasingly complex scaffolds for skin TE will enable the development of closer physical and physiological mimics to natural skin; it also allows researchers to study the DEJ effect on cell function. Few studies have created patterned substrates that could mimic the human DEJ to explore their significance. Here, we first review the DEJ roles and then critically discuss the TE strategies to create the DEJ undulating structure and their effects. New approaches in this field could be instrumental for improving bioengineered skin substitutes, creating 3D engineered skin, identifying pathological mechanisms, and producing and screening drugs.
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Affiliation(s)
- Mina Aleemardani
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield S3 7HQ, UK; (M.A.); (M.Z.T.); (N.H.G.)
| | - Michael Zivojin Trikić
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield S3 7HQ, UK; (M.A.); (M.Z.T.); (N.H.G.)
| | - Nicola Helen Green
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield S3 7HQ, UK; (M.A.); (M.Z.T.); (N.H.G.)
- Insigneo Institute for in Silico Medicine, The Pam Liversidge Building, Sir Robert Hadfield Building, Mappin Street, Sheffield S1 3JD, UK
| | - Frederik Claeyssens
- Biomaterials and Tissue Engineering Group, Department of Materials Science and Engineering, Kroto Research Institute, The University of Sheffield, Sheffield S3 7HQ, UK; (M.A.); (M.Z.T.); (N.H.G.)
- Correspondence:
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Maseda Pedrero R, Quintana Castanedo L, Pérez Conde I, Jiménez González M, Escámez Toledano M, de Lucas Laguna R. Epidermolysis Bullosa in Spain: Observational Study of a Cohort of Patients Treated in a National Referral Center. ACTAS DERMO-SIFILIOGRAFICAS 2021. [DOI: 10.1016/j.adengl.2021.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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A rat model of polymicrobial infection in full-thickness excision wounds. J Tissue Viability 2021; 30:537-543. [PMID: 34148717 DOI: 10.1016/j.jtv.2021.06.003] [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: 01/22/2021] [Revised: 06/02/2021] [Accepted: 06/07/2021] [Indexed: 11/21/2022]
Abstract
AIM A reproducible animal model is required to study the pathophysiology of wound infections and for development of effective therapeutic interventions. The objective of this study was to produce an infected skin wound model utilizing the cecal microbiota in non-immunocompromised rats. MATERIALS AND METHODS An excision wound was created on the dorsal surface of rats and inoculated with different concentration of cecal slurry (CS). Wound progression was investigated macroscopically by wound scoring and imaging. The rats were sacrificed on day 6 and microbial load, myeloperoxidase activity, histopathology, and scanning electron microscopy (SEM) were performed in wound tissue. RESULTS Inoculation of CS into excision wounds caused significantly (p < 0.05) delayed wound healing in comparison to non-infected wounds as revealed by slow wound closure (9.1 to 12.83%). A significant (p < 0.05) difference in wound score was observed between the infected and non-infected wounds. A significantly (p < 0.05) high microbial load (~10 9 CFU/gm) was observed in infected wound which was supported by the presence of intensive bacterial colonization with sparse development of amorphous material on wound tissue during SEM analysis. A maximum increase of 1.76-fold in myeloperoxidase activity was observed in the infected wounds in comparison to non-infected wounds. Histopathology revealed increased amount of cellular infiltration, hematoma formation, and presence of bacterial aggregates in deep tissues. CONCLUSION The study reports a reproducible and relevant clinical model of wound infection where cecal microbiota was used as a source of infection. This model can provide a suitable platform for evaluation of new therapeutic interventions.
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Larose AE, Dakiw-Piaceski A, Barbier MA, Larouche D, Gauvin R, Caruso M, Pope E, Germain L. Peel Test to Assess the Adhesion Strength of the Dermal-Epidermal Junction in Tissue-Engineered Skin. Tissue Eng Part C Methods 2021; 26:180-189. [PMID: 32085694 DOI: 10.1089/ten.tec.2019.0268] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Innovative therapies combining gene-corrected stem cells and the production of bioengineered tissues to treat epidermolysis bullosa are emerging. However, quantitative tests to measure the adhesion forces between two highly viscoelastic substrates such as those found in bilayered bioengineered skin are needed and are still lacking. The objective of this study was to develop a mechanical test to measure the dermal-epidermal adhesion strength of our bilayered tissue-engineered skin substitute (TES) produced with the self-assembly method. We developed a peel test, which allows the displacement of both skin layers in a T configuration, based on the ASTM International standard. A MATLAB program was written to process and analyze raw data. The experimental setup was tested by measuring the dermal-epidermal adhesion strength in TESs produced with normal or collagen VII-deficient cells. Our peel testing method allowed us to detect the impact of the absence of collagen VII in the dermal-epidermal adhesion strength of TESs and also to examine the progression of the dermal-epidermal adhesion strength in relation to culture time in normal TES. Impact statement This study describes a method for assessing the adhesion strength at the dermal-epidermal junction of individual tissue-engineered skin substitute (TES). An ASTM standardized protocol of peel testing was designed to measure this important mechanical property. Our innovative approach will serve as a quality control in the production, improvement, and application of TESs for the treatment of pathologies affecting the dermal-epidermal adhesion such as epidermolysis bullosa. Data presented contribute to research on the interfaces between biological substrates and provide a reference factor for the characterization of products derived from tissue engineering.
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Affiliation(s)
- Alex E Larose
- CHU of Québec-Laval University Research Center and Center of Research in Experimental Organogenesis of Laval University/LOEX, Québec, Canada.,Department of Surgery, Faculty of Medicine, Université Laval, Québec, Canada
| | - Angela Dakiw-Piaceski
- CHU of Québec-Laval University Research Center and Center of Research in Experimental Organogenesis of Laval University/LOEX, Québec, Canada
| | - Martin A Barbier
- CHU of Québec-Laval University Research Center and Center of Research in Experimental Organogenesis of Laval University/LOEX, Québec, Canada.,Department of Surgery, Faculty of Medicine, Université Laval, Québec, Canada
| | - Danielle Larouche
- CHU of Québec-Laval University Research Center and Center of Research in Experimental Organogenesis of Laval University/LOEX, Québec, Canada
| | - Robert Gauvin
- CHU of Québec-Laval University Research Center and Center of Research in Experimental Organogenesis of Laval University/LOEX, Québec, Canada.,Department of Surgery, Faculty of Medicine, Université Laval, Québec, Canada
| | - Manuel Caruso
- CHU of Québec-Laval University Research Center and Center of Research in Experimental Organogenesis of Laval University/LOEX, Québec, Canada.,Department of Molecular Biology, Medical Biochemistry and Pathology, Faculty of Medicine, Université Laval Cancer Research Center, Université Laval, Québec, Canada
| | - Elena Pope
- Paediatric Dermatology, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Canada
| | - Lucie Germain
- CHU of Québec-Laval University Research Center and Center of Research in Experimental Organogenesis of Laval University/LOEX, Québec, Canada.,Department of Surgery, Faculty of Medicine, Université Laval, Québec, Canada
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Smith BRC, Nyström A, Nowell CJ, Hausser I, Gretzmeier C, Robertson SJ, Varigos GA, Has C, Kern JS, Pang KC. Mouse models for dominant dystrophic epidermolysis bullosa carrying common human point mutations recapitulate the human disease. Dis Model Mech 2021; 14:dmm048082. [PMID: 34085701 PMCID: PMC8214732 DOI: 10.1242/dmm.048082] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 04/27/2021] [Indexed: 12/13/2022] Open
Abstract
Heterozygous missense mutations in the human COL7A1 gene - coding for collagen VII - lead to the rare, dominantly inherited skin disorder dominant dystrophic epidermolysis bullosa (DDEB), which is characterised by skin fragility, blistering, scarring and nail dystrophy. To better understand the pathophysiology of DDEB and develop more effective treatments, suitable mouse models for DDEB are required but to date none have existed. We identified the two most common COL7A1 mutations in DDEB patients (p.G2034R and p.G2043R) and used CRISPR-Cas9 to introduce the corresponding mutations into mouse Col7a1 (p.G2028R and p.G2037R). Dominant inheritance of either of these two alleles results in a phenotype that closely resembles that seen in DDEB patients. Specifically, mice carrying these alleles show recurrent blistering that is first observed transiently around the mouth and paws in the early neonatal period and then again around the digits from 5-10 weeks of age. Histologically, the mice show micro-blistering and reduced collagen VII immunostaining. Biochemically, collagen VII from these mice displays reduced thermal stability, which we also observed to be the case for DDEB patients carrying the analogous mutations. Unlike previous rodent models of epidermolysis bullosa, which frequently show early lethality and severe disease, these mouse models, which to our knowledge are the first for DDEB, show no reduction in growth and survival, and - together with a relatively mild phenotype - represent a practically and ethically tractable tool for better understanding and treating epidermolysis bullosa. This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Blake R. C. Smith
- Murdoch Children's Research Institute, Parkville, VIC 3052, Australia
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
| | - Alexander Nyström
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79104, Germany
| | - Cameron J. Nowell
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Ingrid Hausser
- Institute of Pathology, University Hospital Heidelberg, Heidelberg 69120, Germany
| | - Christine Gretzmeier
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79104, Germany
| | - Susan J. Robertson
- Murdoch Children's Research Institute, Parkville, VIC 3052, Australia
- Dermatology Department, Faculty of Medicine, Dentistry and Health Sciences, The Royal Melbourne Hospital, University of Melbourne, Parkville, VIC 3050, Australia
- Royal Children's Hospital, Parkville, VIC 3052, Australia
| | - George A. Varigos
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
- Dermatology Department, Faculty of Medicine, Dentistry and Health Sciences, The Royal Melbourne Hospital, University of Melbourne, Parkville, VIC 3050, Australia
| | - Cristina Has
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79104, Germany
| | - Johannes S. Kern
- Dermatology Department, Faculty of Medicine, Dentistry and Health Sciences, The Royal Melbourne Hospital, University of Melbourne, Parkville, VIC 3050, Australia
| | - Ken C. Pang
- Murdoch Children's Research Institute, Parkville, VIC 3052, Australia
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
- Royal Children's Hospital, Parkville, VIC 3052, Australia
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Maseda Pedrero R, Quintana Castanedo L, Pérez Conde I, Jiménez González M, Escámez Toledano MJ, de Lucas Laguna R. Epidermolysis Bullosa in Spain: Observational Study of a Cohort of Patients Treated in a National Referral Center. ACTAS DERMO-SIFILIOGRAFICAS 2021; 112:S0001-7310(21)00176-9. [PMID: 33984313 DOI: 10.1016/j.ad.2021.04.006] [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: 03/21/2021] [Revised: 04/11/2021] [Accepted: 04/25/2021] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Epidermolysis bullosa (EB) is a heterogeneous group of inherited disorders characterized by a high degree of mucocutaneous fragility. This study aimed to describe the clinical and epidemiologic characteristics of patients with EB treated in Hospital Universitario La Paz, a national referral center for inherited EB. MATERIAL AND METHODS Observational, retrospective, single-center study. We included all cases with a clinical and molecular diagnosis of EB managed in the hospital's dermatology department from January 2, 2000, to February 28, 2021. RESULTS A total of 214 cases were studied. The median (interquartile range) age was 17 (8-32) years; 54.2% were women. One hundred thirty-five (63.1%) patients had dystrophic EB, 67 (31.3%) had EB simplex, 8 (3.7%) had junctional EB, and 3 (1.4%) had Kindler syndrome. One (0.5%) had EB acquisita. Over a third (35.5%) of the patients resided in Madrid. The most common clinical complications were pruritus (63.1%), local infections (56.5%), and pain (54.7%). The most serious ones were cardiomyopathy (in 5.6%) and squamous cell carcinoma (10.3%). Twenty-two patients (10.3%) died. CONCLUSIONS Dystrophic EB was the most prevalent clinical form. The most prevalent complications were pruritus, pain, and infections. The most serious ones were cardiomyopathy and squamous cell carcinoma. This study is the first in Spain that explores strategies for improving the health status and quality of life of patients with EB.
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Affiliation(s)
- R Maseda Pedrero
- Servicio de Dermatología, Hospital Universitario La Paz, Madrid, España
| | | | - I Pérez Conde
- Servicio de Dermatología, Hospital Universitario La Paz, Madrid, España
| | - M Jiménez González
- Servicio de Bioestadística, Hospital Universitario La Paz, Universidad Autónoma de Madrid, Madrid, España
| | - M J Escámez Toledano
- Departamento de Bioingeniería, Universidad Carlos III de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Raras (U714-CIBERER), Unidad de Medicina Regenerativa, CIEMAT, Madrid, España
| | - R de Lucas Laguna
- Servicio de Dermatología, Hospital Universitario La Paz, Madrid, España
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Rathner A, Rathner P, Friedrich A, Wießner M, Kitzler CM, Schernthaner J, Karl T, Krauß J, Lottspeich F, Mewes W, Hintner H, Bauer JW, Breitenbach M, Müller N, Breitenbach-Koller H, von Hagen J. Drug Development for Target Ribosomal Protein rpL35/uL29 for Repair of LAMB3R635X in Rare Skin Disease Epidermolysis Bullosa. Skin Pharmacol Physiol 2021; 34:167-182. [PMID: 33823521 DOI: 10.1159/000513260] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 11/22/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Epidermolysis bullosa (EB) describes a family of rare genetic blistering skin disorders. Various subtypes are clinically and genetically heterogeneous, and a lethal postpartum form of EB is the generalized severe junctional EB (gs-JEB). gs-JEB is mainly caused by premature termination codon (PTC) mutations in the skin anchor protein LAMB3 (laminin subunit beta-3) gene. The ribosome in majority of translational reads of LAMB3PTC mRNA aborts protein synthesis at the PTC signal, with production of a truncated, nonfunctional protein. This leaves an endogenous readthrough mechanism needed for production of functional full-length Lamb3 protein albeit at insufficient levels. Here, we report on the development of drugs targeting ribosomal protein L35 (rpL35), a ribosomal modifier for customized increase in production of full-length Lamb3 protein from a LAMB3PTC mRNA. METHODS Molecular docking studies were employed to identify small molecules binding to human rpL35. Molecular determinants of small molecule binding to rpL35 were further characterized by titration of the protein with these ligands as monitored by nuclear magnetic resonance (NMR) spectroscopy in solution. Changes in NMR chemical shifts were used to map the docking sites for small molecules onto the 3D structure of the rpL35. RESULTS Molecular docking studies identified 2 FDA-approved drugs, atazanavir and artesunate, as candidate small-molecule binders of rpL35. Molecular interaction studies predicted several binding clusters for both compounds scattered throughout the rpL35 structure. NMR titration studies identified the amino acids participating in the ligand interaction. Combining docking predictions for atazanavir and artesunate with rpL35 and NMR analysis of rpL35 ligand interaction, one binding cluster located near the N-terminus of rpL35 was identified. In this region, the nonidentical binding sites for atazanavir and artesunate overlap and are accessible when rpL35 is integrated in its natural ribosomal environment. CONCLUSION Atazanavir and artesunate were identified as candidate compounds binding to ribosomal protein rpL35 and may now be tested for their potential to trigger a rpL35 ribosomal switch to increase production of full-length Lamb3 protein from a LAMB3PTC mRNA for targeted systemic therapy in treating gs-JEB.
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Affiliation(s)
- Adriana Rathner
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Petr Rathner
- Department of Biosciences, University of Salzburg, Salzburg, Austria
- Institute of Inorganic Chemistry, Johannes Kepler University, Linz, Austria
| | - Andreas Friedrich
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Michael Wießner
- Department of Biosciences, University of Salzburg, Salzburg, Austria
- Department of Allergology and Dermatology, University Hospital Salzburg, Salzburg, Austria
| | | | - Jan Schernthaner
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Thomas Karl
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Jan Krauß
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | | | - Werner Mewes
- TUM School of Life Sciences, Technical University of Munich, Munich, Germany
| | - Helmut Hintner
- Department of Biosciences, University of Salzburg, Salzburg, Austria
- Department of Allergology and Dermatology, University Hospital Salzburg, Salzburg, Austria
| | - Johann W Bauer
- Department of Biosciences, University of Salzburg, Salzburg, Austria
- Department of Allergology and Dermatology, University Hospital Salzburg, Salzburg, Austria
| | | | - Norbert Müller
- Institute of Inorganic Chemistry, Johannes Kepler University, Linz, Austria
- Institute of Organic Chemistry, Johannes Kepler University, Linz, Austria
- Faculty of Natural Sciences, University of South Bohemia, Ceske Budejovice, Czechia
| | | | - Jörg von Hagen
- Department of Life Science Engineering, Technische Hochschule Mittelhessen, Gießen, Germany
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Karamanos NK, Theocharis AD, Piperigkou Z, Manou D, Passi A, Skandalis SS, Vynios DH, Orian-Rousseau V, Ricard-Blum S, Schmelzer CEH, Duca L, Durbeej M, Afratis NA, Troeberg L, Franchi M, Masola V, Onisto M. A guide to the composition and functions of the extracellular matrix. FEBS J 2021; 288:6850-6912. [PMID: 33605520 DOI: 10.1111/febs.15776] [Citation(s) in RCA: 334] [Impact Index Per Article: 111.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 02/13/2021] [Accepted: 02/18/2021] [Indexed: 12/13/2022]
Abstract
Extracellular matrix (ECM) is a dynamic 3-dimensional network of macromolecules that provides structural support for the cells and tissues. Accumulated knowledge clearly demonstrated over the last decade that ECM plays key regulatory roles since it orchestrates cell signaling, functions, properties and morphology. Extracellularly secreted as well as cell-bound factors are among the major members of the ECM family. Proteins/glycoproteins, such as collagens, elastin, laminins and tenascins, proteoglycans and glycosaminoglycans, hyaluronan, and their cell receptors such as CD44 and integrins, responsible for cell adhesion, comprise a well-organized functional network with significant roles in health and disease. On the other hand, enzymes such as matrix metalloproteinases and specific glycosidases including heparanase and hyaluronidases contribute to matrix remodeling and affect human health. Several cell processes and functions, among them cell proliferation and survival, migration, differentiation, autophagy, angiogenesis, and immunity regulation are affected by certain matrix components. Structural alterations have been also well associated with disease progression. This guide on the composition and functions of the ECM gives a broad overview of the matrisome, the major ECM macromolecules, and their interaction networks within the ECM and with the cell surface, summarizes their main structural features and their roles in tissue organization and cell functions, and emphasizes the importance of specific ECM constituents in disease development and progression as well as the advances in molecular targeting of ECM to design new therapeutic strategies.
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Affiliation(s)
- Nikos K Karamanos
- Biochemistry, Biochemical Analysis & Matrix Pathobiology Research Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Greece.,Foundation for Research and Technology-Hellas (FORTH)/Institute of Chemical Engineering Sciences (ICE-HT), Patras, Greece
| | - Achilleas D Theocharis
- Biochemistry, Biochemical Analysis & Matrix Pathobiology Research Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Greece
| | - Zoi Piperigkou
- Biochemistry, Biochemical Analysis & Matrix Pathobiology Research Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Greece.,Foundation for Research and Technology-Hellas (FORTH)/Institute of Chemical Engineering Sciences (ICE-HT), Patras, Greece
| | - Dimitra Manou
- Biochemistry, Biochemical Analysis & Matrix Pathobiology Research Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Greece
| | - Alberto Passi
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Spyros S Skandalis
- Biochemistry, Biochemical Analysis & Matrix Pathobiology Research Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Greece
| | - Demitrios H Vynios
- Biochemistry, Biochemical Analysis & Matrix Pathobiology Research Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, Greece
| | - Véronique Orian-Rousseau
- Karlsruhe Institute of Technology, Institute of Biological and Chemical Systems- Functional Molecular Systems, Eggenstein-Leopoldshafen, Germany
| | - Sylvie Ricard-Blum
- University of Lyon, UMR 5246, ICBMS, Université Lyon 1, CNRS, Villeurbanne Cedex, France
| | - Christian E H Schmelzer
- Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany.,Institute of Pharmacy, Faculty of Natural Sciences I, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Laurent Duca
- UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Team 2: Matrix Aging and Vascular Remodelling, Université de Reims Champagne Ardenne (URCA), UFR Sciences Exactes et Naturelles, Reims, France
| | - Madeleine Durbeej
- Department of Experimental Medical Science, Unit of Muscle Biology, Lund University, Sweden
| | - Nikolaos A Afratis
- Department Biological Regulation, Weizmann Institute of Science, Rehovot, Israel
| | - Linda Troeberg
- Norwich Medical School, University of East Anglia, Bob Champion Research and Education Building, Norwich, UK
| | - Marco Franchi
- Department for Life Quality Study, University of Bologna, Rimini, Italy
| | | | - Maurizio Onisto
- Department of Biomedical Sciences, University of Padova, Italy
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Vallet SD, Berthollier C, Salza R, Muller L, Ricard-Blum S. The Interactome of Cancer-Related Lysyl Oxidase and Lysyl Oxidase-Like Proteins. Cancers (Basel) 2020; 13:E71. [PMID: 33383846 PMCID: PMC7794802 DOI: 10.3390/cancers13010071] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 12/22/2020] [Indexed: 12/16/2022] Open
Abstract
The members of the lysyl oxidase (LOX) family are amine oxidases, which initiate the covalent cross-linking of the extracellular matrix (ECM), regulate ECM stiffness, and contribute to cancer progression. The aim of this study was to build the first draft of the interactome of the five members of the LOX family in order to determine its molecular functions, the biological and signaling pathways mediating these functions, the biological processes it is involved in, and if and how it is rewired in cancer. In vitro binding assays, based on surface plasmon resonance and bio-layer interferometry, combined with queries of interaction databases and interaction datasets, were used to retrieve interaction data. The interactome was then analyzed using computational tools. We identified 31 new interactions and 14 new partners of LOXL2, including the α5β1 integrin, and built an interactome comprising 320 proteins, 5 glycosaminoglycans, and 399 interactions. This network participates in ECM organization, degradation and cross-linking, cell-ECM interactions mediated by non-integrin and integrin receptors, protein folding and chaperone activity, organ and blood vessel development, cellular response to stress, and signal transduction. We showed that this network is rewired in colorectal carcinoma, leading to a switch from ECM organization to protein folding and chaperone activity.
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Affiliation(s)
- Sylvain D. Vallet
- Univ Lyon, University Claude Bernard Lyon 1, CNRS, INSA Lyon, CPE, Institute of Molecular and Supramolecular Chemistry and Biochemistry, UMR 5246, F-69622 Villeurbanne CEDEX, France; (S.D.V.); (C.B.); (R.S.)
| | - Coline Berthollier
- Univ Lyon, University Claude Bernard Lyon 1, CNRS, INSA Lyon, CPE, Institute of Molecular and Supramolecular Chemistry and Biochemistry, UMR 5246, F-69622 Villeurbanne CEDEX, France; (S.D.V.); (C.B.); (R.S.)
| | - Romain Salza
- Univ Lyon, University Claude Bernard Lyon 1, CNRS, INSA Lyon, CPE, Institute of Molecular and Supramolecular Chemistry and Biochemistry, UMR 5246, F-69622 Villeurbanne CEDEX, France; (S.D.V.); (C.B.); (R.S.)
| | - Laurent Muller
- Center for Interdisciplinary Research in Biology (CIRB), Collège de France, CNRS, INSERM, PSL Research University, 75231 Paris CEDEX 05, France;
| | - Sylvie Ricard-Blum
- Univ Lyon, University Claude Bernard Lyon 1, CNRS, INSA Lyon, CPE, Institute of Molecular and Supramolecular Chemistry and Biochemistry, UMR 5246, F-69622 Villeurbanne CEDEX, France; (S.D.V.); (C.B.); (R.S.)
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15
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Titeux M, Bonnet des Claustres M, Izmiryan A, Ragot H, Hovnanian A. Emerging drugs for the treatment of epidermolysis bullosa. Expert Opin Emerg Drugs 2020; 25:467-489. [DOI: 10.1080/14728214.2020.1839049] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Matthias Titeux
- Imagine Institute, Laboratory of Genetic Skin Diseases, INSERM UMR 1163, Université de Paris, Paris, France
| | | | - Araksya Izmiryan
- Imagine Institute, Laboratory of Genetic Skin Diseases, INSERM UMR 1163, Université de Paris, Paris, France
| | - Helene Ragot
- Imagine Institute, Laboratory of Genetic Skin Diseases, INSERM UMR 1163, Université de Paris, Paris, France
| | - Alain Hovnanian
- Imagine Institute, Laboratory of Genetic Skin Diseases, INSERM UMR 1163, Université de Paris, Paris, France
- Départment de Génétique, AP-HP, Hôpital Necker-Enfants Malades, Paris, France
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16
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Abstract
Epidermolysis bullosa (EB) is an inherited, heterogeneous group of rare genetic dermatoses characterized by mucocutaneous fragility and blister formation, inducible by often minimal trauma. A broad phenotypic spectrum has been described, with potentially severe extracutaneous manifestations, morbidity and mortality. Over 30 subtypes are recognized, grouped into four major categories, based predominantly on the plane of cleavage within the skin and reflecting the underlying molecular abnormality: EB simplex, junctional EB, dystrophic EB and Kindler EB. The study of EB has led to seminal advances in our understanding of cutaneous biology. To date, pathogenetic mutations in 16 distinct genes have been implicated in EB, encoding proteins influencing cellular integrity and adhesion. Precise diagnosis is reliant on correlating clinical, electron microscopic and immunohistological features with mutational analyses. In the absence of curative treatment, multidisciplinary care is targeted towards minimizing the risk of blister formation, wound care, symptom relief and specific complications, the most feared of which - and also the leading cause of mortality - is squamous cell carcinoma. Preclinical advances in cell-based, protein replacement and gene therapies are paving the way for clinical successes with gene correction, raising hopes amongst patients and clinicians worldwide.
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17
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Has C, Fischer J. Epidermolysis bullosa hereditaria. MED GENET-BERLIN 2019. [DOI: 10.1007/s11825-019-00266-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zusammenfassung
Epidermolysis bullosa hereditaria (EB) umfasst eine Gruppe von Erkrankungen, die mit Hautfragilität und mechanisch verursachter Blasenbildung einhergehen. Die klinischen Manifestationen zeigen unterschiedliche Schweregrade, von lebensbedrohlich bis leicht. Im Kindesalter und bei Erwachsenen kann das klinische Bild typisch sein; allerdings kann bei Neugeborenen der EB-Subtyp klinisch häufig nicht bestimmt werden. Pathogene Varianten in 20 Genen sind bereits als krankheitsursächlich für die verschiedenen Formen der EB beschrieben. Die allelische Heterogenität ist sehr groß. Die Diagnostik basiert auf der genauen klinischen Untersuchung, der Familienanamnese und der molekulargenetischen Analyse. Aufgrund der genetischen Heterogenität und der Größe der Gene eignet sich die „Next-generation-sequencing“-basierte Multi-Gen-Panel-Diagnostik am besten. Teilweise sind Genotyp-Phänotyp-Korrelationen bekannt, sodass die genetische Diagnostik auch prognostisch eine Rolle spielt.
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Affiliation(s)
- Cristina Has
- 1 Klinik für Dermatologie und Venerologie Universitätsklinikum Freiburg, Medizinische Fakultät, Albert-Ludwigs-Universität Hauptstr. 7 79104 Freiburg Deutschland
| | - Judith Fischer
- 2 Institut für Humangenetik, Zentrum für Diagnostik und Forschung Genodermatosen ZDFG Universitätsklinikum Freiburg, Medizinische Fakultät, Albert-Ludwigs-Universität Breisacher Str. 33 79106 Freiburg Deutschland
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18
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Schauer F, Monasterio C, Technau-Hafsi K, Kern JS, Lazaro A, Deibert P, Hasselblatt P, Schwacha H, Heeg S, Brass V, Küllmer A, Schmidt AR, Schmitt-Graeff A, Kreisel W. Esophageal lichen planus: towards diagnosis of an underdiagnosed disease. Scand J Gastroenterol 2019; 54:1189-1198. [PMID: 31608788 DOI: 10.1080/00365521.2019.1674375] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Background: Although lichen planus (LP) is a common skin disorder, the prevalence of esophageal involvement (ELP) and its clinical manifestations are poorly defined. We aimed to establish diagnostic criteria and characterize disease outcomes of ELP.Methods: Clinical, endoscopic, histological, and immunofluorescence data from consecutive patients with known LP between 2013 and 2018 were analyzed. We established endoscopic (denudation and tearing of the mucosa, hyperkeratosis and trachealization) and histological criteria (mucosal detachment, T-lymphocytic infiltrate, intraepithelial apoptosis, dyskeratosis, and fibrinogen deposits along the basement membrane) to grade disease severity. Endoscopic findings were correlated with clinical symptoms. Response to medical therapy was monitored.Results: Fifty-two consecutive patients (median age 59.5 years) were analyzed. According to our grading system, 16 patients were considered as severe and 18 as mild ELP. Dysphagia was the only symptom which differentiated patients with severe (14/16) or mild ELP (8/18) from patients without ELP (1/18). Concomitant oral and genital involvement of LP was associated with the presence of ELP, while oral involvement alone was not. Follow-up of 14/16 patients with severe EPL for at least one year revealed that most of these patients responded to topical corticosteroids (budesonide: n = 9/10 or fluticasone n = 2/2). Three budesonide patients experienced a resolution of symptomatic esophageal stenosis.Conclusions: Esophageal involvement of LP is frequent, but may be asymptomatic. ELP can be diagnosed using the diagnostic criteria proposed here. Dysphagia and combined oral and genital manifestation are associated with ELP. Therapy with topical corticosteroids appears to be a prudent therapeutic approach for ELP.
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Affiliation(s)
- Franziska Schauer
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Carmen Monasterio
- Department of Medicine II, Gastroenterology, Hepatology, Endocrinology and Infectious Diseases, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Kristin Technau-Hafsi
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Johannes Steffen Kern
- Department of Dermatology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Department of Dermatology, Royal Melbourne Hospital, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Australia
| | - Adhara Lazaro
- Department of Medicine, Institute of Exercise and Occupational Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Peter Deibert
- Department of Medicine, Institute of Exercise and Occupational Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Peter Hasselblatt
- Department of Medicine II, Gastroenterology, Hepatology, Endocrinology and Infectious Diseases, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Henning Schwacha
- Department of Medicine II, Gastroenterology, Hepatology, Endocrinology and Infectious Diseases, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Steffen Heeg
- Department of Medicine II, Gastroenterology, Hepatology, Endocrinology and Infectious Diseases, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Volker Brass
- Kliniken des Landkreises Lörrach GmbH, Gastroenterology, Germany
| | - Armin Küllmer
- Department of Medicine II, Gastroenterology, Hepatology, Endocrinology and Infectious Diseases, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Arthur Robert Schmidt
- Department of Medicine II, Gastroenterology, Hepatology, Endocrinology and Infectious Diseases, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Annette Schmitt-Graeff
- Institute of Clinical Pathology, Medical Center - University of Freiburg, Freiburg, Germany
| | - Wolfgang Kreisel
- Department of Medicine II, Gastroenterology, Hepatology, Endocrinology and Infectious Diseases, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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Chacón‐Solano E, León C, Díaz F, García‐García F, García M, Escámez M, Guerrero‐Aspizua S, Conti C, Mencía Á, Martínez‐Santamaría L, Llames S, Pévida M, Carbonell‐Caballero J, Puig‐Butillé J, Maseda R, Puig S, de Lucas R, Baselga E, Larcher F, Dopazo J, del Río M. Fibroblast activation and abnormal extracellular matrix remodelling as common hallmarks in three cancer-prone genodermatoses. Br J Dermatol 2019; 181:512-522. [PMID: 30693469 PMCID: PMC6850467 DOI: 10.1111/bjd.17698] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/24/2019] [Indexed: 12/27/2022]
Abstract
BACKGROUND Recessive dystrophic epidermolysis bullosa (RDEB), Kindler syndrome (KS) and xeroderma pigmentosum complementation group C (XPC) are three cancer-prone genodermatoses whose causal genetic mutations cannot fully explain, on their own, the array of associated phenotypic manifestations. Recent evidence highlights the role of the stromal microenvironment in the pathology of these disorders. OBJECTIVES To investigate, by means of comparative gene expression analysis, the role played by dermal fibroblasts in the pathogenesis of RDEB, KS and XPC. METHODS We conducted RNA-Seq analysis, which included a thorough examination of the differentially expressed genes, a functional enrichment analysis and a description of affected signalling circuits. Transcriptomic data were validated at the protein level in cell cultures, serum samples and skin biopsies. RESULTS Interdisease comparisons against control fibroblasts revealed a unifying signature of 186 differentially expressed genes and four signalling pathways in the three genodermatoses. Remarkably, some of the uncovered expression changes suggest a synthetic fibroblast phenotype characterized by the aberrant expression of extracellular matrix (ECM) proteins. Western blot and immunofluorescence in situ analyses validated the RNA-Seq data. In addition, enzyme-linked immunosorbent assay revealed increased circulating levels of periostin in patients with RDEB. CONCLUSIONS Our results suggest that the different causal genetic defects converge into common changes in gene expression, possibly due to injury-sensitive events. These, in turn, trigger a cascade of reactions involving abnormal ECM deposition and underexpression of antioxidant enzymes. The elucidated expression signature provides new potential biomarkers and common therapeutic targets in RDEB, XPC and KS. What's already known about this topic? Recessive dystrophic epidermolysis bullosa (RDEB), Kindler syndrome (KS) and xeroderma pigmentosum complementation group C (XPC) are three genodermatoses with high predisposition to cancer development. Although their causal genetic mutations mainly affect epithelia, the dermal microenvironment likely contributes to the physiopathology of these disorders. What does this study add? We disclose a large overlapping transcription profile between XPC, KS and RDEB fibroblasts that points towards an activated phenotype with high matrix-synthetic capacity. This common signature seems to be independent of the primary causal deficiency, but reflects an underlying derangement of the extracellular matrix via transforming growth factor-β signalling activation and oxidative state imbalance. What is the translational message? This study broadens the current knowledge about the pathology of these diseases and highlights new targets and biomarkers for effective therapeutic intervention. It is suggested that high levels of circulating periostin could represent a potential biomarker in RDEB.
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20
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Direct 3D bioprinted full-thickness skin constructs recapitulate regulatory signaling pathways and physiology of human skin. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.bprint.2019.e00051] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Liu T, Qiu C, Ben C, Li H, Zhu S. One-step approach for full-thickness skin defect reconstruction in rats using minced split-thickness skin grafts with Pelnac overlay. BURNS & TRAUMA 2019; 7:19. [PMID: 31413962 PMCID: PMC6691548 DOI: 10.1186/s41038-019-0157-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Accepted: 04/24/2019] [Indexed: 11/12/2022]
Abstract
Background Split-thickness skin grafting is the current gold standard for the treatment of traumatic skin loss. However, for patients with extensive burns, split-thickness skin grafting is limited by donor skin availability. Grafting split-thickness skin minced into micrografts increases the expansion ratio but may reduce wound repair quality. Dermal substitutes such as Pelnac can enhance the healing of full-thickness skin wounds, but their application currently requires two surgeries. The present study investigated whether it is possible to repair full-thickness skin defects and improve wound healing quality in a single surgery using Pelnac as an overlay of minced split-thickness skin grafts in a rat model. Methods A full-thickness skin defect model was established using male Sprague-Dawley rats of 10 weeks old. The animals were randomly divided into control and experimental groups in which Vaseline gauze and Pelnac, respectively, were overlaid on minced split-thickness skin grafts to repair the defects. Wound healing rate and quality were compared between the two groups. For better illustration of the quality of wound healing, some results were compared with those obtained for normal skin of rats. Results We found that using Pelnac as an overlay for minced split-thickness skin grafts accelerated wound closure and stimulated cell proliferation and tissue angiogenesis. In addition, this approach enhanced collagen synthesis and increased the formation of basement membrane and dermis as well as the expression of growth factors related to wound healing while reducing scar formation. Conclusions Using minced split-thickness skin grafts overlaid with Pelnac enables the reconstruction of full-thickness skin defects in a single step and can increase the healing rate while improving the quality of wound healing.
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Affiliation(s)
- Tong Liu
- Department of Burn Surgery, Institute of Burns, The First Affiliated Hospital, Naval Medical University, Shanghai, 200433 China
| | - Chao Qiu
- Emergency Department, The First Affiliated Hospital, Naval Medical University, Shanghai, 200433 China
| | - Chi Ben
- Department of Burn Surgery, Institute of Burns, The First Affiliated Hospital, Naval Medical University, Shanghai, 200433 China
| | - Haihang Li
- Department of Burn Surgery, Institute of Burns, The First Affiliated Hospital, Naval Medical University, Shanghai, 200433 China
| | - Shihui Zhu
- Department of Burn Surgery, Institute of Burns, The First Affiliated Hospital, Naval Medical University, Shanghai, 200433 China
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Keene DR, Tufa SF. Connective Tissue Ultrastructure: A Direct Comparison between Conventional Specimen Preparation and High-Pressure Freezing/Freeze-Substitution. Anat Rec (Hoboken) 2019; 303:1514-1526. [PMID: 31251834 DOI: 10.1002/ar.24211] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 12/28/2018] [Accepted: 01/18/2019] [Indexed: 11/11/2022]
Abstract
It is generally agreed within the microscopy community that the quality of ultrastructure within the connective tissue matrix resulting from high-pressure freezing followed by freeze-substitution (HPF/FS) far exceeds that gained following the "conventional" preparation method, which includes aqueous fixation, dehydration, and embedding. Exposure to cryogen at high pressure is the only cryopreservation method capable of vitrifying tissue structure to a depth exceeding 200 μm. Cells within connective tissues prepared by HPF/FS are universally larger, filling the commonly seen void at the juncture between cell and matrix. Without significant shrinkage of cells and the coincident extraction of the cytosolic components, well-resolved organelles are less clustered within an expanded cytosol. Much of the artifact from "conventional" methods occurs as large space filling and also smaller fibril-associated proteoglycans are extracted during fixation. However, the visualization of some matrix features by electron microscopy is actually dependent on the collapse or extraction of these "masking" components. Herein, we argue that an impression of ultrastructure within commonly studied matrices, in particular skin, is best gained following the evaluation of both conventional preparations and tissue prepared by HPF/FS. Anat Rec, 2019. © 2019 American Association for Anatomy.
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Affiliation(s)
- Douglas R Keene
- Shriners Hospital for Children Micro-Imaging Center, Portland, Oregon.,Department of Biomechanical Engineering, Oregon Health Sciences University, Portland, Oregon.,Department of Medical Genetics, Oregon Health Sciences University, Portland, Oregon
| | - Sara F Tufa
- Shriners Hospital for Children Micro-Imaging Center, Portland, Oregon
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Brown Y, Hua S, Tanwar PS. Extracellular matrix-mediated regulation of cancer stem cells and chemoresistance. Int J Biochem Cell Biol 2019; 109:90-104. [DOI: 10.1016/j.biocel.2019.02.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 02/03/2019] [Accepted: 02/05/2019] [Indexed: 12/12/2022]
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24
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Condrat I, He Y, Cosgarea R, Has C. Junctional Epidermolysis Bullosa: Allelic Heterogeneity and Mutation Stratification for Precision Medicine. Front Med (Lausanne) 2019; 5:363. [PMID: 30761300 PMCID: PMC6362712 DOI: 10.3389/fmed.2018.00363] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 12/21/2018] [Indexed: 11/13/2022] Open
Abstract
Junctional epidermolysis bullosa (JEB) is a hereditary blistering disease caused by reduced dermal-epidermal adhesion due to deficiencies of one of the proteins, laminin-332, type XVII collagen, integrin α6β4 or integrin α3. Significant progress has been achieved in the development of therapies for EB, such as bone-marrow transplantation, local or systemic injections with fibroblasts or mesenchymal stromal cells, readthrough of premature termination codons, or exon skipping. These were tailored in particular for dystrophic EB, which is caused by type VII collagen deficiency and have not yet reached broad clinical practice. Recently, pioneering combined gene and stem cell therapy was successful in treating one boy with junctional EB. Beside these exclusive approaches, no specific therapy to amend the major clinical features, skin and mucosal blistering and non-healing wounds is available to date. Here we extend the mutational spectrum of junctional EB, provide a stratification of COL17A1 mutations and discuss potential molecular therapeutic approaches.
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Affiliation(s)
- Irina Condrat
- Department of Dermatology and Venerology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Department of Dermatology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj Napoca, Romania
| | - Yinghong He
- Department of Dermatology and Venerology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Rodica Cosgarea
- Department of Dermatology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj Napoca, Romania
| | - Cristina Has
- Department of Dermatology and Venerology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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Human Skin: Composition, Structure and Visualisation Methods. STUDIES IN MECHANOBIOLOGY, TISSUE ENGINEERING AND BIOMATERIALS 2019. [DOI: 10.1007/978-3-030-13279-8_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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26
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He Y, Has C. Isolation and Culture of Epidermolysis Bullosa Cells and Organotypic Skin Models. Methods Mol Biol 2019; 1993:181-190. [PMID: 31148087 DOI: 10.1007/978-1-4939-9473-1_14] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Isolation and culture of keratinocytes from patients with different types of epidermolysis bullosa are sometimes challenging, because of the inherent adhesion defects of these cells. We routinely employ a well-established protocol for in vitro culture of these cells from small skin samples remaining after diagnostic procedures are performed. Keratinocytes and fibroblast can be used for downstream expression and functional studies or for construction of in vitro organotypic cocultures. These cells maintain main common characteristics of spreading, adhesion, migration, and survival, which depend on the underlying molecular defect.
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Affiliation(s)
- Yinghong He
- Department of Dermatology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Cristina Has
- Department of Dermatology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
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Vela-Romera A, Carriel V, Martín-Piedra MA, Aneiros-Fernández J, Campos F, Chato-Astrain J, Prados-Olleta N, Campos A, Alaminos M, Garzón I. Characterization of the human ridged and non-ridged skin: a comprehensive histological, histochemical and immunohistochemical analysis. Histochem Cell Biol 2018; 151:57-73. [PMID: 30099600 PMCID: PMC6328512 DOI: 10.1007/s00418-018-1701-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/28/2018] [Indexed: 01/12/2023]
Abstract
The structure of the human skin is directly dependent on its location and the mechanical forces to which it is subjected. In the present work, we have performed a comprehensive analysis of the human ridged and non-ridged skin to identify the differences and similarities between both skin types. For this purpose, human skin samples were obtained from dorsal hand skin (DHS), palmar hand skin (PHS), dorsal foot skin (DFS) and plantar foot skin (PFS) from the same cadaveric donors. Histological, histochemical and semiquantitative and quantitative immunohistochemical analyses were carried out to evaluate the epidermis, dermis and basement membrane. Results show that the epithelial layer of ridged skin had larger cell number and size than non-ridged skin for most strata. Melanocytes and Langerhans cells were more abundant in non-ridged skin, whereas Merkel cells were preferentially found in ridged skin. The expression pattern of CK5/6 was slightly differed between non-ridged and ridged skin. Involucrin expression was slightly more intense in non-ridged skin than in ridged skin. Collagen was more abundant in foot skin dermis than in hand skin, and in ridged skin as compared to non-ridged skin. Elastic fibers were more abundant in DHS. Biglycan was more abundant in foot skin than in hand skin. No differences were found for blood and lymphatic vessels. The basement membrane laminin was preferentially found in foot skin. These results revealed important differences at the epithelial, dermal and basement membrane levels that could contribute to a better knowledge of the human skin histology.
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Affiliation(s)
- A Vela-Romera
- Tissue Engineering Group, Department of Histology, Faculty of Medicine, University of Granada, Avenida de la Investigación 11, Torre A, Planta 5, 18016, Granada, Spain.,PhD Program in Biomedicine, Escuela de Posgrado, University of Granada, Granada, Spain
| | - V Carriel
- Tissue Engineering Group, Department of Histology, Faculty of Medicine, University of Granada, Avenida de la Investigación 11, Torre A, Planta 5, 18016, Granada, Spain.,Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain
| | - M A Martín-Piedra
- Tissue Engineering Group, Department of Histology, Faculty of Medicine, University of Granada, Avenida de la Investigación 11, Torre A, Planta 5, 18016, Granada, Spain.,Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain
| | | | - F Campos
- Tissue Engineering Group, Department of Histology, Faculty of Medicine, University of Granada, Avenida de la Investigación 11, Torre A, Planta 5, 18016, Granada, Spain.,Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain
| | - J Chato-Astrain
- Tissue Engineering Group, Department of Histology, Faculty of Medicine, University of Granada, Avenida de la Investigación 11, Torre A, Planta 5, 18016, Granada, Spain
| | - N Prados-Olleta
- Orthopedic Surgery Department, Virgen de las Nieves University Hospital, Granada, Spain.,Department of Surgery, University of Granada, Granada, Spain
| | - A Campos
- Tissue Engineering Group, Department of Histology, Faculty of Medicine, University of Granada, Avenida de la Investigación 11, Torre A, Planta 5, 18016, Granada, Spain.,Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain
| | - M Alaminos
- Tissue Engineering Group, Department of Histology, Faculty of Medicine, University of Granada, Avenida de la Investigación 11, Torre A, Planta 5, 18016, Granada, Spain. .,Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain.
| | - I Garzón
- Tissue Engineering Group, Department of Histology, Faculty of Medicine, University of Granada, Avenida de la Investigación 11, Torre A, Planta 5, 18016, Granada, Spain.,Instituto de Investigación Biosanitaria ibs.GRANADA, Granada, Spain
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28
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Michalak A, Cichoż-Lach H, Prozorow-Król B, Buk L, Dzida M. A rare case of skin blistering and esophageal stenosis in the course of epidermolysis bullosa - case report and literature review. BMC Gastroenterol 2018; 18:47. [PMID: 29653516 PMCID: PMC5899341 DOI: 10.1186/s12876-018-0771-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 03/20/2018] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Epidermolysis bullosa (EB) constitutes a heterogenous group of rare multisystem genetically transmitted disorders comprising several blistering muco-cutaneous diseases with a monogenic basis and either autosomal dominant or autosomal recessive mode of inheritance. EB manifestation is not only limited to the skin. Systemic signs might involve the nose, ear, eye, genitourinary tract and upper gastrointestinal tract. The presence of particular symptoms is directly determined by a type of altered skin protein. Gastrointestinal manifestation of EB is most commonly reflected by esophageal stenosis due to recurrent esophageal blistering, followed by consequent scarring. CASE PRESENTATION Here we present a case of a man with dystrophic EB and dysphagia, skin blistering, joints contractures and missing nails. To our knowledge, the presented man is the oldest one diagnosed with EB living in Poland. CONCLUSIONS Management of an esophageal stricture in such circumstances is based on endoscopic dilatation. However, in most severe cases, placement of a gastrostomy tube is required. Despite great advances in medicine, a targeted therapy in the course of EB has not been established yet.
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Affiliation(s)
- Agata Michalak
- Department of Gastroenterology with Endoscopy Unit, Medical University of Lublin, Jaczewski Str, Lublin, 820-954, Poland
| | - Halina Cichoż-Lach
- Department of Gastroenterology with Endoscopy Unit, Medical University of Lublin, Jaczewski Str, Lublin, 820-954, Poland.
| | - Beata Prozorow-Król
- Department of Gastroenterology with Endoscopy Unit, Medical University of Lublin, Jaczewski Str, Lublin, 820-954, Poland
| | - Leszek Buk
- Department of Radiology and Nuclear Medicine, Medical University of Lublin, Jaczewski Str, Lublin, 820-954, Poland
| | - Monika Dzida
- Department of Radiology and Nuclear Medicine, Medical University of Lublin, Jaczewski Str, Lublin, 820-954, Poland
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29
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Sánchez-Jimeno C, Escámez M, Ayuso C, Trujillo-Tiebas M, del Río M. Genetic Diagnosis of Epidermolysis Bullosa: Recommendations From an Expert Spanish Research Group. ACTAS DERMO-SIFILIOGRAFICAS 2018. [DOI: 10.1016/j.adengl.2017.12.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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30
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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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31
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Sánchez-Jimeno C, Escámez MJ, Ayuso C, Trujillo-Tiebas MJ, Del Río M. Genetic diagnosis of epidermolysis bullosa: recommendations from an expert Spanish research group. ACTAS DERMO-SIFILIOGRAFICAS 2017; 109:104-122. [PMID: 29180129 DOI: 10.1016/j.ad.2017.08.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 08/25/2017] [Accepted: 08/30/2017] [Indexed: 12/15/2022] Open
Abstract
Epidermolysis bullosa (EB) is a rare genetic disease that causes mucocutaneous fragility. It comprises a clinically and genetically heterogeneous group of disorder characterized by spontaneous or contact/friction-induced blistering. EB is classified into 4 types-simplex, junctional, dystrophic, and Kindler syndrome-and 30 subtypes. The disease is caused by defects in proteins implicated in dermal-epidermal adhesion. At least 19 genes have been characterized and more than 1000 mutations identified, thus rendering diagnosis complex. Molecular diagnosis of EB is the last stage of a laborious process that starts with a detailed clinical history compilation and careful procurement of a skin fresh biopsy that includes an area where the epidermis detaches from the dermis. The detachment area makes it possible to establish the cleavage plane by antigen mapping and, in the best scenario, to identify a single candidate gene to search for pathogenic mutations. The results of the molecular diagnosis enable the physician to provide appropriate genetic counseling (inheritance pattern, risk of recurrence, and options for prenatal and preimplantation diagnosis) and implement subsequent preventive programs, as well as to establish a reasonable clinical prognosis facilitating access to specific therapy and rehabilitation. Lastly, molecular diagnosis is essential for the participation of patients in clinical trials, a critical issue given the current incurable status of EB. The present guidelines aim to disseminate the procedure for diagnosing EB in our laboratory and thus avoid suboptimal or incomplete clinical diagnoses. The recommendations we provide are the result of more than 10 years' experience in the molecular diagnosis of EB in Spain.
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Affiliation(s)
- C Sánchez-Jimeno
- Departamento de Genética, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, CIBER de Enfermedades Raras (ISCIII) U704, Madrid, España
| | - M J Escámez
- Departamento de Bioingeniería, Universidad Carlos III de Madrid; Unidad de Medicina Regenerativa, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), IIS-Fundación Jiménez Díaz, CIBER de Enfermedades Raras (ISCIII) U714, Madrid, España
| | - C Ayuso
- Departamento de Genética, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, CIBER de Enfermedades Raras (ISCIII) U704, Madrid, España
| | - M J Trujillo-Tiebas
- Departamento de Genética, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, CIBER de Enfermedades Raras (ISCIII) U704, Madrid, España.
| | - M Del Río
- Departamento de Bioingeniería, Universidad Carlos III de Madrid; Unidad de Medicina Regenerativa, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), IIS-Fundación Jiménez Díaz, CIBER de Enfermedades Raras (ISCIII) U714, Madrid, España.
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32
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Kubanov АA, Karamova AEH, Al'banova VI, CHikin VV, Monchakovskaya ES. CONGENITAL EPIDERMOLYSIS BULLOSA: PECULIARITIES OF EPIDERMIS REGENERATION AND METHODS OF TREATMENT. VESTNIK DERMATOLOGII I VENEROLOGII 2017. [DOI: 10.25208/0042-4609-2017-93-4-28-37] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Congenital epidermolysis bullosa is a group of hereditary skin diseases caused by mutations in the genes of structural proteins of the dermoepidermal junction of the skin, characterized by formation of blisters and erosions at the smallest mechanical trauma. In patients with severe subtypes of borderline and dystrophic epidermolysis bullosa there are long-term erosive and ulcerative defects with disruption of the healing process. Factors that impede healing include: malnutrition, anemia, pain, inactivity, local factors (presence of infection, prolonged inflammation, extensive nature of the lesion, absence of skin appendages in the affected area, deficiency or lack of formation of type VII collagen). Elimination of healing impeding factors is the main challenge in treatment of severe subtypes of bullous epidermolysis. Modern promising treatment techniques are at the stage of development and have not yet been introduced into clinical practice, and, as of today, skin care and optimal topical treatment with modern non-adhesive dressings remain the most widespread treatment methods that facilitate accelerated healing.
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33
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Targeted Disruption of the Lama3 Gene in Adult Mice Is Sufficient to Induce Skin Inflammation and Fibrosis. J Invest Dermatol 2017; 137:332-340. [DOI: 10.1016/j.jid.2016.07.040] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 06/15/2016] [Accepted: 07/26/2016] [Indexed: 02/07/2023]
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34
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Viquez OM, Yazlovitskaya EM, Tu T, Mernaugh G, Secades P, McKee KK, Georges-Labouesse E, De Arcangelis A, Quaranta V, Yurchenco P, Gewin LC, Sonnenberg A, Pozzi A, Zent R. Integrin alpha6 maintains the structural integrity of the kidney collecting system. Matrix Biol 2016; 57-58:244-257. [PMID: 28043890 DOI: 10.1016/j.matbio.2016.12.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 12/10/2016] [Indexed: 10/20/2022]
Abstract
Laminins are a major constituent of the basement membranes of the kidney collecting system. Integrins, transmembrane receptors formed by non-covalently bound α and β subunits, serve as laminin receptors, but their role in development and homeostasis of the kidney collecting system is poorly defined. Integrin α3β1, one of the major laminin receptors, plays a minor role in kidney collecting system development, while the role of α6 containing integrins (α6β1 and α6β4), the other major laminin receptors, is unknown. Patients with mutations in α6 containing integrins not only develop epidermolysis bullosa, but also have abnormalities in the kidney collecting system. In this study, we show that selectively deleting the α6 or β4 integrin subunits at the initiation of ureteric bud development in mice does not affect morphogenesis. However, the collecting system becomes dilated and dysmorphic as the mice age. The collecting system in both null genotypes was also highly susceptible to unilateral ureteric obstruction injury with evidence of excessive tubule dilatation and epithelial cell apoptosis. Mechanistically, integrin α6-null collecting duct cells are unable to withstand high mechanical force when adhered to laminin. Thus, we conclude that α6 integrins are important for maintaining the integrity of the kidney collecting system by enhancing tight adhesion of the epithelial cells to the basement membrane. These data give a mechanistic explanation for the association between kidney collecting system abnormalities in patients and epidermolysis bullosa.
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Affiliation(s)
- Olga M Viquez
- Division of Nephrology and Hypertension and Vanderbilt Center for Kidney Disease, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Eugenia M Yazlovitskaya
- Division of Nephrology and Hypertension and Vanderbilt Center for Kidney Disease, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Tianxiang Tu
- Division of Nephrology and Hypertension and Vanderbilt Center for Kidney Disease, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Glenda Mernaugh
- Division of Nephrology and Hypertension and Vanderbilt Center for Kidney Disease, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Pablo Secades
- Division of Cell Biology, Netherlands Cancer Institute, 1066 CX Amsterdam, Netherlands
| | - Karen K McKee
- Department of Pathology and Laboratory Medicine, Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA
| | - Elizabeth Georges-Labouesse
- Department of Development and Stem Cells, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg, Illkirch, Inserm, U964, Illkirch, CNRS, UMR 7104, Illkirch, Université de Strasbourg, Strasbourg, France
| | - Adele De Arcangelis
- Department of Development and Stem Cells, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg, Illkirch, Inserm, U964, Illkirch, CNRS, UMR 7104, Illkirch, Université de Strasbourg, Strasbourg, France
| | - Vito Quaranta
- Department of Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Peter Yurchenco
- Department of Pathology and Laboratory Medicine, Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA
| | - Leslie C Gewin
- Division of Nephrology and Hypertension and Vanderbilt Center for Kidney Disease, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Veterans Affairs Hospital, Nashville, TN 37232, USA
| | - Arnoud Sonnenberg
- Division of Cell Biology, Netherlands Cancer Institute, 1066 CX Amsterdam, Netherlands
| | - Ambra Pozzi
- Division of Nephrology and Hypertension and Vanderbilt Center for Kidney Disease, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Department of Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Veterans Affairs Hospital, Nashville, TN 37232, USA
| | - Roy Zent
- Division of Nephrology and Hypertension and Vanderbilt Center for Kidney Disease, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Department of Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Veterans Affairs Hospital, Nashville, TN 37232, USA.
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35
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Uitto J, Has C, Vahidnezhad H, Youssefian L, Bruckner-Tuderman L. Molecular pathology of the basement membrane zone in heritable blistering diseases:: The paradigm of epidermolysis bullosa. Matrix Biol 2016; 57-58:76-85. [PMID: 27496350 DOI: 10.1016/j.matbio.2016.07.009] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 07/19/2016] [Accepted: 07/28/2016] [Indexed: 01/03/2023]
Abstract
Epidermolysis bullosa (EB), a phenotypically heterogeneous group of skin fragility disorders, is characterized by blistering and erosions with considerable morbidity and mortality. Mutations in as many as 18 distinct genes expressed at the cutaneous basement membrane zone have been shown to be associated with the blistering phenotype, attesting to the role of the corresponding proteins in providing stable association of the epidermis to the dermis through adhesion at the dermo-epidermal basement membrane zone. Thus, different forms of EB have been highly instructive in providing information on the physiological functions of these proteins as integral components of the supramolecular adhesion complexes. In addition, precise information of the underlying genes and distinct mutations in families with EB has been helpful in subclassification of the disease with prognostic implications, as well as for prenatal testing and preimplantation genetic diagnosis. Furthermore, knowledge of the types of mutations is a prerequisite for application of allele-specific treatment approaches that have been recently developed, including read-through of premature termination codon mutations and chaperone-facilitated intracellular transport of conformationally altered proteins to proper physiologic subcellular location. Collectively, EB serves as a paradigm of heritable skin diseases in which significant progress has been made in identifying the underlying genetic bases and associated aberrant pathways leading from mutations to the phenotype, thus allowing application of precision medicine for this, currently intractable group of diseases.
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Affiliation(s)
- Jouni Uitto
- Department of Dermatology and Cutaneous Biology, The Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA.
| | - Cristina Has
- Department of Dermatology, University of Freiburg, Freiburg, Germany
| | - Hassan Vahidnezhad
- Department of Dermatology and Cutaneous Biology, The Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA; Biotechnology Research Center, Department of Molecular Medicine, Pasteur Institute of Iran, Tehran, Iran
| | - Leila Youssefian
- Department of Dermatology and Cutaneous Biology, The Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
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36
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Dermal Contributions to Human Interfollicular Epidermal Architecture and Self-Renewal. Int J Mol Sci 2015; 16:28098-107. [PMID: 26602926 PMCID: PMC4691026 DOI: 10.3390/ijms161226078] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 11/10/2015] [Accepted: 11/17/2015] [Indexed: 12/21/2022] Open
Abstract
The human interfollicular epidermis is renewed throughout life by populations of proliferating basal keratinocytes. Though interfollicular keratinocyte stem cells have been identified, it is not known how self-renewal in this compartment is spatially organized. At the epidermal-dermal junction, keratinocytes sit atop a heterogeneous mix of dermal cells that may regulate keratinocyte self-renewal by influencing local tissue architecture and signalling microenvironments. Focusing on the rete ridges and complementary dermal papillae in human skin, we review the identity and organisation of abundant dermal cells types and present evidence for interactions between the dermal microenvironment and the interfollicular keratinocytes.
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37
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Abstract
COPII vesicles mediate export of secretory cargo from the endoplasmic reticulum (ER). However, a standard COPII vesicle with a diameter of 60-90 nm is too small to export collagens that are composed of rigid triple helices of up to 400 nm in length. How do cells pack and secrete such bulky molecules? This issue is fundamentally important, as collagens constitute approximately 25% of our dry body weight and are essential for almost all cell-cell interactions. Recently, a potential mechanism for the biogenesis of mega-transport carriers was identified, involving packing collagens and increasing the size of COPII coats. Packing is mediated by TANGO1, which binds procollagen VII in the lumen and interacts with the COPII proteins Sec23/Sec24 on the cytoplasmic side of the ER. Cullin3, an E3 ligase, and its specific adaptor protein, KLHL12, ubiquitinate Sec31, which could increase the size of COPII coats. Recruitment of these proteins and their specific interactors into COPII-mediated vesicle biogenesis may be all that is needed for the export of bulky collagens from the ER. Nonetheless, we present an alternative pathway in which TANGO1 and COPII cooperate to export collagens without generating a mega-transport carrier.
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38
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Lin HY, Chen SH, Chang SH, Huang ST. Tri-layered chitosan scaffold as a potential skin substitute. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2015; 26:855-67. [PMID: 26155720 DOI: 10.1080/09205063.2015.1061350] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A tri-layered chitosan-based scaffold was successfully made to replicate the striation of a full-thickness skin more accurately than a single- or bi-layered scaffold, which needed weeks of co-culturing of fibroblasts and keratinocytes to achieve similar striation. Chitosan solution was freeze-dried and made into porous disks. Chitosan or chitosan-pectin in acetic acid solution was electrospun onto the chitosan disk to form a nanofibrous layer and a thin film. Examinations based on scanning electron spectroscopy showed that the scaffold was composed of a porous layer (2 mm) to simulate the dermis, a thin film (25-45 μm) to mimic the basement membrane, and a layer of nanofibers (100-200 μm) to serve as the protective epidermis. The tensile strength and modulus of the composite scaffold were significantly higher than those of the chitosan disk (p < 0.01). The composite was able to quickly absorb water and stayed intact throughout the course of the 14-day cell culture tests. The fibroblast cells seeded on both sides of the scaffolds were able to proliferate and stayed separated by the thin film.
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Affiliation(s)
- Hsin-Yi Lin
- a Graduate Institute of Biochemical and Biomedical Engineering , National Taipei University of Technology , Taipei 106 , Taiwan
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Has C, Nyström A. Epidermal Basement Membrane in Health and Disease. CURRENT TOPICS IN MEMBRANES 2015; 76:117-70. [PMID: 26610913 DOI: 10.1016/bs.ctm.2015.05.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Skin, as the organ protecting the individual from environmental aggressions, constantly meets external insults and is dependent on mechanical toughness for its preserved function. Accordingly, the epidermal basement membrane (BM) zone has adapted to enforce tissue integrity. It harbors anchoring structures created through unique organization of common BM components and expression of proteins exclusive to the epidermal BM zone. Evidence for the importance of its correct assembly and the nonredundancy of its components for skin integrity is apparent from the multiple skin blistering disorders caused by mutations in genes coding for proteins associated with the epidermal BM and from autoimmune disorders in which autoantibodies target these molecules. However, it has become clear that these proteins not only provide mechanical support but are also critically involved in tissue homeostasis, repair, and regeneration. In this chapter, we provide an overview of the unique organization and components of the epidermal BM. A special focus will be given to its function during regeneration, and in inherited and acquired diseases.
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Affiliation(s)
- Cristina Has
- Department of Dermatology, University Medical Center Freiburg, Freiburg, Germany
| | - Alexander Nyström
- Department of Dermatology, University Medical Center Freiburg, Freiburg, Germany
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From marrow to matrix: novel gene and cell therapies for epidermolysis bullosa. Mol Ther 2015; 23:987-992. [PMID: 25803200 DOI: 10.1038/mt.2015.47] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 03/11/2015] [Indexed: 12/22/2022] Open
Abstract
Epidermolysis bullosa encompasses a group of inherited connective tissue disorders that range from mild to lethal. There is no cure, and current treatment is limited to palliative care that is largely ineffective in treating the systemic, life-threatening pathology associated with the most severe forms of the disease. Although allogeneic cell- and protein-based therapies have shown promise, both novel and combinatorial approaches will undoubtedly be required to totally alleviate the disorder. Progress in the development of next-generation therapies that synergize targeted gene-correction and induced pluripotent stem cell technologies offers exciting prospects for personalized, off-the-shelf treatment options that could avoid many of the limitations associated with current allogeneic cell-based therapies. Although no single therapeutic avenue has achieved complete success, each has substantially increased our collective understanding of the complex biology underlying the disease, both providing mechanistic insights and uncovering new hurdles that must be overcome.
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Medeiros GX, Riet-Correa F. Epidermolysis bullosa in animals: a review. Vet Dermatol 2014; 26:3-13, e1-2. [PMID: 25354580 DOI: 10.1111/vde.12176] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2014] [Indexed: 11/30/2022]
Abstract
Epidermolysis bullosa (EB) is a hereditary mechanobullous disease of animals and humans, characterized by an extreme fragility of the skin and mucous membranes. The main feature of EB in humans and animals is the formation of blisters and erosions in response to minor mechanical trauma. Epidermolysis bullosa is caused by mutations in the genes that code for structural proteins of the cytoskeleton of the basal keratinocytes or of the basement membrane zone. Based on the ultrastructural levels of tissue separation, EB is divided into the following three broad categories: epidermolysis bullosa simplex, junctional epidermolysis bullosa and dystrophic epidermolysis bullosa. Human types of EB are divided into several subtypes based on their ultrastructural changes and the mode of inheritance; subtypes are not fully established in animals. In humans, it is estimated that EB affects one in 17,000 live births; the frequency of EB in different animals species is not known. In all animal species, except in buffalo with epidermolysis bullosa simplex, multifocal ulcers are observed on the gums, hard and soft palates, mucosa of the lips, cheek mucosa and dorsum of the tongue. Dystrophic or absent nails, a frequent sign seen in human patients with EB, corresponds to the deformities and sloughing of the hooves in ungulates and to dystrophy or atrophy of the claws in dogs and cats. This review covers aspects of the molecular biology, diagnosis, classification, clinical signs and pathology of EB reported in animals.
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Affiliation(s)
- Gildenor X Medeiros
- Postgraduate Program in Veterinary Medicine, Veterinary Hospital, Federal University of Campina Grande, Patos, Paraíba, CEP 58708-110, Brazil
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Eckes B, Krieg T, Wickström SA. Role of integrin signalling through integrin-linked kinase in skin physiology and pathology. Exp Dermatol 2014; 23:453-6. [DOI: 10.1111/exd.12429] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/24/2014] [Indexed: 12/31/2022]
Affiliation(s)
- Beate Eckes
- Dermatology; University of Cologne; Cologne Germany
| | - Thomas Krieg
- Dermatology; University of Cologne; Cologne Germany
- CECAD Cologne Excellent in Aging Research; Cologne Germany
- Center for Molecular Medicine Cologne (CMMC); Cologne Germany
| | - Sara A. Wickström
- CECAD Cologne Excellent in Aging Research; Cologne Germany
- Paul Gerson Unna Group ‘Skin Homeostasis and Ageing’; Max Planck Institute for Biology of Ageing; Cologne Germany
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Abstract
Genetic skin fragility manifests with diminished resistance of the skin and mucous membranes to external mechanical forces and with skin blistering, erosions, and painful wounds as clinical features. Skin fragility disorders, collectively called epidermolysis bullosa, are caused by mutations in 18 distinct genes that encode proteins involved in epidermal integrity and dermal-epidermal adhesion. The genetic spectrum, along with environmental and genetic modifiers, creates a large number of clinical phenotypes, spanning from minor localized lesions to severe generalized blistering, secondary skin cancer, or early demise resulting from extensive loss of the epidermis. Laboratory investigations of skin fragility have greatly augmented our understanding of genotype-phenotype correlations in epidermolysis bullosa and have also advanced skin biology in general. Current translational research concentrates on the development of biologically valid treatments with therapeutic genes, cells, proteins, or small-molecule compounds in preclinical settings or human pilot trials.
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Affiliation(s)
- Cristina Has
- Department of Dermatology, Medical Center-University of Freiburg, Freiburg 79104, Germany;
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Vanden Oever MJ, Tolar J. Advances in understanding and treating dystrophic epidermolysis bullosa. F1000PRIME REPORTS 2014; 6:35. [PMID: 24860657 PMCID: PMC4017907 DOI: 10.12703/p6-35] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Epidermolysis bullosa is a group of inherited disorders that can be both systemic and life-threatening. Standard treatments for the most severe forms of this disorder, typically limited to palliative care, are ineffective in reducing the morbidity and mortality due to complications of the disease. Emerging therapies—such as the use of allogeneic cellular therapy, gene therapy, and protein therapy—have all shown promise, but it is likely that several approaches will need to be combined to realize a cure. For recessive dystrophic epidermolysis bullosa, each particular therapeutic approach has added to our understanding of type VII collagen (C7) function and the basic biology surrounding the disease. The efficacy of these therapies and the mechanisms by which they function also give us insight into developing future strategies for treating this and other extracellular matrix disorders.
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Karpati S. Secrets of the cutaneous basement membrane. J Invest Dermatol 2014; 134:602-604. [PMID: 24518114 DOI: 10.1038/jid.2013.452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The paper in this issue by Has and co-workers reports 15 non-Herlitz epidermolysis bullosa patients with the same single amino-acid substitution in collagen XVII, all of whom presented with clinical and pathological features resembling Kindler syndrome. Here we consider why and how a hemidesmosomal pathology can mimic a focal adhesion bond disease, both clinically and ultrastructurally.
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Affiliation(s)
- Sarolta Karpati
- Department of Dermatology, Venereology and Dermato-oncology, Semmelweis University, Budapest, Hungary.
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