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Aw YB, Chen S, Yeo A, Dangerfield JA, Mok P. Development and functional testing of a novel in vitro delayed scratch closure assay. Histochem Cell Biol 2024:10.1007/s00418-024-02292-y. [PMID: 38713267 DOI: 10.1007/s00418-024-02292-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/18/2024] [Indexed: 05/08/2024]
Abstract
As the development of chronic wound therapeutics continues to expand, the demand for advanced assay systems mimicking the inflammatory wound microenvironment in vivo increases. Currently, this is performed in animal models or in in vitro cell-based models such as cell culture scratch assays that more closely resemble acute wounds. Here, we describe for the first time a delayed scratch closure model that mimics some features of a chronic wound in vitro. Chronic wounds such as those suffered by later stage diabetic patients are characterised by degrees of slowness to heal caused by a combination of continued localised physical trauma and pro-inflammatory signalling at the wound. To recreate this in a cell-based assay, a defined physical scratch was created and stimulated by combinations of pro-inflammatory factors, namely interferon, the phorbol ester PMA, and lipopolysaccharide, to delay scratch closure. The concentrations of these factors were characterised for commonly used human keratinocyte (HaCaT) and dermal fibroblast (HDF) cell lines. These models were then tested for scratch closure responsiveness to a proprietary healing secretome derived from human Wharton's jelly mesenchymal stem cells (MSCs) previously validated and shown to be highly effective on closure of acute wound models both in vitro and in vivo. The chronically open scratches from HaCaT cells showed closure after exposure to the MSC secretome product. We propose this delayed scratch closure model for academic and industrial researchers studying chronic wounds looking for responsiveness to drugs or biological treatments prior to testing on explanted patient material or in vivo.
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Affiliation(s)
- Yi Bing Aw
- Celligenics Pte Ltd, Singapore, Singapore
| | - Sixun Chen
- Celligenics Pte Ltd, Singapore, Singapore
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Aimin Yeo
- Celligenics Pte Ltd, Singapore, Singapore
| | - John A Dangerfield
- Celligenics Pte Ltd, Singapore, Singapore
- Austrianova Singapore Pte Ltd, Singapore, Singapore
| | - Pamela Mok
- Celligenics Pte Ltd, Singapore, Singapore.
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2
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Sawaya AP, Vecin NM, Burgess JL, Ojeh N, DiBartolomeo G, Stone RC, Pastar I, Tomic-Canic M. Calreticulin: a multifunctional protein with potential therapeutic applications for chronic wounds. Front Med (Lausanne) 2023; 10:1207538. [PMID: 37692787 PMCID: PMC10484228 DOI: 10.3389/fmed.2023.1207538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 08/07/2023] [Indexed: 09/12/2023] Open
Abstract
Calreticulin is recognized as a multifunctional protein that serves an essential role in diverse biological processes that include wound healing, modification and folding of proteins, regulation of the secretory pathway, cell motility, cellular metabolism, protein synthesis, regulation of gene expression, cell cycle regulation and apoptosis. Although the role of calreticulin as an endoplasmic reticulum-chaperone protein has been well described, several studies have demonstrated calreticulin to be a highly versatile protein with an essential role during wound healing. These features make it an ideal molecule for treating a complex, multifactorial diseases that require fine tuning, such as chronic wounds. Indeed, topical application of recombinant calreticulin to wounds in multiple models of wound healing has demonstrated remarkable pro-healing effects. Among them include enhanced keratinocyte and fibroblast migration and proliferation, induction of extracellular matrix proteins, recruitment of macrophages along with increased granulation tissue formation, all of which are important functions in promoting wound healing that are deregulated in chronic wounds. Given the high degree of diverse functions and pro-healing effects, application of exogenous calreticulin warrants further investigation as a potential novel therapeutic option for chronic wound patients. Here, we review and highlight the significant effects of topical application of calreticulin on enhancing wound healing and its potential as a novel therapeutic option to shift chronic wounds into healing, acute-like wounds.
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Affiliation(s)
- Andrew P. Sawaya
- Wound Healing and Regenerative Medicine Research Program, Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Nicole M. Vecin
- Wound Healing and Regenerative Medicine Research Program, Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Jamie L. Burgess
- Wound Healing and Regenerative Medicine Research Program, Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Nkemcho Ojeh
- Wound Healing and Regenerative Medicine Research Program, Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
- Faculty of Medical Sciences, The University of the West Indies, Bridgetown, Barbados
| | - Gabrielle DiBartolomeo
- Wound Healing and Regenerative Medicine Research Program, Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Rivka C. Stone
- Wound Healing and Regenerative Medicine Research Program, Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Irena Pastar
- Wound Healing and Regenerative Medicine Research Program, Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Marjana Tomic-Canic
- Wound Healing and Regenerative Medicine Research Program, Dr Phillip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
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3
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Berg T, Doppelt-Flikshtain O, Coyac BR, Zigdon-Giladi H. Oral fibroblasts rescue osteogenic differentiation of mesenchymal stem cells after exposure to Zoledronic acid in a paracrine effect. Front Pharmacol 2023; 14:1172705. [PMID: 37637413 PMCID: PMC10450747 DOI: 10.3389/fphar.2023.1172705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 08/03/2023] [Indexed: 08/29/2023] Open
Abstract
Background: Medication-related osteonecrosis of the jaw is a serious complication that develops in oncologic patients treated with Zoledronic acid. Although used for over 30 years, the influence of Zoledronic acid on bone has been thoroughly investigated, mainly on osteoclasts. While decreasing osteoclast differentiation and function, for many years it was thought that Zoledronic acid increased osteoblast differentiation, thus increasing bone volume. Moreover, despite the influence of soft tissue on the bone healing process, the impact of zoledronic acid on the interaction between soft tissue and bone was not investigated. Aim: Our goal was to investigate the influence of Zoledronic Acid and soft tissue cells on osteogenic differentiation of mesenchymal stem cells (MSCs). Materials and methods: Osteogenic differentiation of MSCs was examined after exposure to Zoledronic Acid. To determine the influence of soft tissue cells on MSCs' osteogenic differentiation, conditioned media from keratinocytes and oral fibroblasts were added to osteogenic medium supplemented with Zoledronic Acid. Proteomic composition of keratinocytes' and fibroblasts' conditioned media were analyzed. Results: Zoledronic Acid decreased osteogenic differentiation of MSCs by seven-fold. The osteogenic differentiation of MSCs was restored by the supplementation of fibroblasts' conditioned medium to osteogenic medium, despite Zoledronic acid treatment. Five osteogenic proteins involved in the TGFβ pathway were exclusively identified in fibroblasts' conditioned medium, suggesting their role in the rescue effect. Conclusion: Oral fibroblasts secrete proteins that enable osteogenic differentiation of MSCs in the presence of Zoledronic Acid.
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Affiliation(s)
- Tal Berg
- Laboratory for Bone Repair, Rambam Healthcare Campus, Haifa, Israel
- The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Ofri Doppelt-Flikshtain
- Laboratory for Bone Repair, Rambam Healthcare Campus, Haifa, Israel
- The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Benjamin R. Coyac
- Laboratory for Bone Repair, Rambam Healthcare Campus, Haifa, Israel
- Department of Periodontology, School of Graduate Dentistry, Rambam Health Care Campus, Haifa, Israel
| | - Hadar Zigdon-Giladi
- Laboratory for Bone Repair, Rambam Healthcare Campus, Haifa, Israel
- The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
- Department of Periodontology, School of Graduate Dentistry, Rambam Health Care Campus, Haifa, Israel
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4
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De Gregorio C, Catalán E, Garrido G, Morandé P, Bennett JC, Muñoz C, Cofré G, Huang YL, Cuadra B, Murgas P, Calvo M, Altermatt F, Yubero MJ, Palisson F, South AP, Ezquer M, Fuentes I. Maintenance of chronicity signatures in fibroblasts isolated from recessive dystrophic epidermolysis bullosa chronic wound dressings under culture conditions. Biol Res 2023; 56:23. [PMID: 37161592 PMCID: PMC10170710 DOI: 10.1186/s40659-023-00437-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 04/27/2023] [Indexed: 05/11/2023] Open
Abstract
BACKGROUND Recessive Dystrophic Epidermolysis Bullosa (RDEB) is a rare inherited skin disease caused by variants in the COL7A1 gene, coding for type VII collagen (C7), an important component of anchoring fibrils in the basement membrane of the epidermis. RDEB patients suffer from skin fragility starting with blister formation and evolving into chronic wounds, inflammation and skin fibrosis, with a high risk of developing aggressive skin carcinomas. Restricted therapeutic options are limited by the lack of in vitro models of defective wound healing in RDEB patients. RESULTS In order to explore a more efficient, non-invasive in vitro model for RDEB studies, we obtained patient fibroblasts derived from discarded dressings) and examined their phenotypic features compared with fibroblasts derived from non-injured skin of RDEB and healthy-donor skin biopsies. Our results demonstrate that fibroblasts derived from RDEB chronic wounds (RDEB-CW) displayed characteristics of senescent cells, increased myofibroblast differentiation, and augmented levels of TGF-β1 signaling components compared to fibroblasts derived from RDEB acute wounds and unaffected RDEB skin as well as skin from healthy-donors. Furthermore, RDEB-CW fibroblasts exhibited an increased pattern of inflammatory cytokine secretion (IL-1β and IL-6) when compared with RDEB and control fibroblasts. Interestingly, these aberrant patterns were found specifically in RDEB-CW fibroblasts independent of the culturing method, since fibroblasts obtained from dressing of acute wounds displayed a phenotype more similar to fibroblasts obtained from RDEB normal skin biopsies. CONCLUSIONS Our results show that in vitro cultured RDEB-CW fibroblasts maintain distinctive cellular and molecular characteristics resembling the inflammatory and fibrotic microenvironment observed in RDEB patients' chronic wounds. This work describes a novel, non-invasive and painless strategy to obtain human fibroblasts chronically subjected to an inflammatory and fibrotic environment, supporting their use as an accessible model for in vitro studies of RDEB wound healing pathogenesis. As such, this approach is well suited to testing new therapeutic strategies under controlled laboratory conditions.
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Affiliation(s)
- Cristian De Gregorio
- Centro de Medicina Regenerativa, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, 7610658, Chile
| | - Evelyng Catalán
- DEBRA Chile, Francisco de Villagra 392, Ñuñoa, Santiago, Chile
| | - Gabriel Garrido
- DEBRA Chile, Francisco de Villagra 392, Ñuñoa, Santiago, Chile
| | - Pilar Morandé
- DEBRA Chile, Francisco de Villagra 392, Ñuñoa, Santiago, Chile
| | | | - Catalina Muñoz
- DEBRA Chile, Francisco de Villagra 392, Ñuñoa, Santiago, Chile
| | - Glenda Cofré
- DEBRA Chile, Francisco de Villagra 392, Ñuñoa, Santiago, Chile
| | - Ya-Lin Huang
- Centro de Medicina Regenerativa, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, 7610658, Chile
| | - Bárbara Cuadra
- Centro de Medicina Regenerativa, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, 7610658, Chile
| | - Paola Murgas
- Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - Margarita Calvo
- Facultad de Ciencias Biológicas y División de Anestesiología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
- Núcleo milenio para el estudio del dolor MINUSPAIN, Santiago, Chile
| | - Fernando Altermatt
- División de Anestesiología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - María Joao Yubero
- DEBRA Chile, Francisco de Villagra 392, Ñuñoa, Santiago, Chile
- Pediatrics and Pediatric Infectious Diseases of Clínica Alemana, Facultad de Medicina Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Francis Palisson
- DEBRA Chile, Francisco de Villagra 392, Ñuñoa, Santiago, Chile
- Servicio de Dermatología, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Andrew P South
- Department of Dermatology & Cutaneous Biology, Thomas Jefferson University, Philadelphia, USA
| | - Marcelo Ezquer
- Centro de Medicina Regenerativa, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, 7610658, Chile.
| | - Ignacia Fuentes
- DEBRA Chile, Francisco de Villagra 392, Ñuñoa, Santiago, Chile.
- Centro de Genética y Genómica, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, 7610658, Chile.
- Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.
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5
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Khodeneva N, Sugimoto MA, Davan-Wetton CSA, Montero-Melendez T. Melanocortin therapies to resolve fibroblast-mediated diseases. Front Immunol 2023; 13:1084394. [PMID: 36793548 PMCID: PMC9922712 DOI: 10.3389/fimmu.2022.1084394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 11/28/2022] [Indexed: 02/01/2023] Open
Abstract
Stromal cells have emerged as central drivers in multiple and diverse diseases, and consequently, as potential new cellular targets for the development of novel therapeutic strategies. In this review we revise the main roles of fibroblasts, not only as structural cells but also as players and regulators of immune responses. Important aspects like fibroblast heterogeneity, functional specialization and cellular plasticity are also discussed as well as the implications that these aspects may have in disease and in the design of novel therapeutics. An extensive revision of the actions of fibroblasts on different conditions uncovers the existence of numerous diseases in which this cell type plays a pathogenic role, either due to an exacerbation of their 'structural' side, or a dysregulation of their 'immune side'. In both cases, opportunities for the development of innovative therapeutic approaches exist. In this regard, here we revise the existing evidence pointing at the melanocortin pathway as a potential new strategy for the treatment and management of diseases mediated by aberrantly activated fibroblasts, including scleroderma or rheumatoid arthritis. This evidence derives from studies involving models of in vitro primary fibroblasts, in vivo models of disease as well as ongoing human clinical trials. Melanocortin drugs, which are pro-resolving mediators, have shown ability to reduce collagen deposition, activation of myofibroblasts, reduction of pro-inflammatory mediators and reduced scar formation. Here we also discuss existing challenges, both in approaching fibroblasts as therapeutic targets, and in the development of novel melanocortin drug candidates, that may help advance the field and deliver new medicines for the management of diseases with high medical needs.
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6
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Verdes M, Mace K, Margetts L, Cartmell S. Status and challenges of electrical stimulation use in chronic wound healing. Curr Opin Biotechnol 2022; 75:102710. [DOI: 10.1016/j.copbio.2022.102710] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 11/19/2021] [Accepted: 03/07/2022] [Indexed: 12/12/2022]
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7
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Álvarez-Vásquez JL, Castañeda-Alvarado CP. Dental pulp fibroblast: A star Cell. J Endod 2022; 48:1005-1019. [DOI: 10.1016/j.joen.2022.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 12/16/2022]
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8
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Harvey J, Mellody KT, Cullum N, Watson REB, Dumville J. Wound fluid sampling methods for proteomic studies: A scoping review. Wound Repair Regen 2022; 30:317-333. [PMID: 35381119 PMCID: PMC9322564 DOI: 10.1111/wrr.13009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 02/01/2022] [Accepted: 03/08/2022] [Indexed: 01/02/2023]
Abstract
Understanding why some wounds are hard to heal is important for improving care and developing more effective treatments. The method of sample collection used is an integral step in the research process and thus may affect the results obtained. The primary objective of this study was to summarise and map the methods currently used to sample wound fluid for protein profiling and analysis. Eligible studies were those that used a sampling method to collect wound fluid from any human wound for analysis of proteins. A search for eligible studies was performed using MEDLINE, Embase and CINAHL Plus in May 2020. All references were screened for eligibility by one reviewer, followed by discussion and consensus with a second reviewer. Quantitative data were mapped and visualised using appropriate software and summarised via a narrative summary. After screening, 280 studies were included in this review. The most commonly used group of wound fluid collection methods were vacuum, drainage or use of other external devices, with surgical wounds being the most common sample source. Other frequently used collection methods were extraction from absorbent materials, collection beneath an occlusive dressing and direct collection of wound fluid. This scoping review highlights the variety of methods used for wound fluid collection. Many studies had small sample sizes and short sample collection periods; these weaknesses have hampered the discovery and validation of novel biomarkers. Future research should aim to assess the reproducibility and feasibility of sampling and analytical methods for use in larger longitudinal studies.
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Affiliation(s)
- Joe Harvey
- Centre for Dermatology Research, School of Biological Sciences, The University of Manchester & Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, UK.,NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - Kieran T Mellody
- Centre for Dermatology Research, School of Biological Sciences, The University of Manchester & Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, UK
| | - Nicky Cullum
- NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK.,Division of Nursing, Midwifery & Social Work, School of Health Sciences, The University of Manchester, Manchester, UK
| | - Rachel E B Watson
- Centre for Dermatology Research, School of Biological Sciences, The University of Manchester & Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, UK.,NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK.,Manchester Institute for Collaborative Research on Ageing, The University of Manchester, Manchester, UK
| | - Jo Dumville
- NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK.,Division of Nursing, Midwifery & Social Work, School of Health Sciences, The University of Manchester, Manchester, UK
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9
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Nyström A, Bruckner-Tuderman L, Kiritsi D. Dystrophic Epidermolysis Bullosa: Secondary Disease Mechanisms and Disease Modifiers. Front Genet 2021; 12:737272. [PMID: 34650598 PMCID: PMC8505774 DOI: 10.3389/fgene.2021.737272] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 08/25/2021] [Indexed: 12/30/2022] Open
Abstract
The phenotypic presentation of monogenetic diseases is determined not only by the nature of the causative mutations but also is influenced by manifold cellular, microenvironmental, and external factors. Here, heritable extracellular matrix diseases, including dystrophic epidermolysis bullosa (DEB), are no exceptions. Dystrophic epidermolysis bullosa is caused by mutations in the COL7A1 gene encoding collagen VII. Deficiency of collagen VII leads to skin and mucosal fragility, which progresses from skin blistering to severe fibrosis and cancer. Clinical and pre-clinical studies suggest that targeting of secondary disease mechanisms or employment of natural disease modifiers can alleviate DEB severity and progression. However, since many of these mechanisms are needed for tissue homeostasis, informed, selective targeting is essential for safe and efficacious treatment. Here, we discuss a selection of key disease modifiers and modifying processes active in DEB, summarize the still scattered knowledge of them, and reflect on ways forward toward their utilization for symptom-relief or enhancement of curative therapies.
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Affiliation(s)
- Alexander Nyström
- Department of Dermatology, Medical Faculty, Medical Center - University of Freiburg, Freiburg, Germany.,Freiburg Institute for Advanced Studies, Freiburg, Germany
| | - Leena Bruckner-Tuderman
- Department of Dermatology, Medical Faculty, Medical Center - University of Freiburg, Freiburg, Germany
| | - Dimitra Kiritsi
- Department of Dermatology, Medical Faculty, Medical Center - University of Freiburg, Freiburg, Germany
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10
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Scaffold-free 3D cell culture of primary skin fibroblasts induces profound changes of the matrisome. Matrix Biol Plus 2021; 11:100066. [PMID: 34435183 PMCID: PMC8377039 DOI: 10.1016/j.mbplus.2021.100066] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 04/15/2021] [Accepted: 04/27/2021] [Indexed: 12/15/2022] Open
Abstract
The human skin has a highly developed extracellular matrix (ECM) that is vital for proper skin functioning, its 3D architecture playing a pivotal role in support and guidance of resident and invading cells. To establish relevant in vitro models mimicking the complex design observed in vivo, scaffold-based and scaffold-free 3D cell culture systems have been developed. Here we show that scaffold-free systems are well suited for the analysis of ECM protein regulation. Using quantitative mass spectrometry-based proteomics in combination with magnetic 3D bioprinting we characterize changes in the proteome of skin fibroblasts and squamous cell carcinoma cells. Transferring cells from 2D to 3D without any additional scaffold induces a profound upregulation of matrisome proteins indicating the generation of a complex, tissue-like ECM.
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11
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Duran-Mota JA, Yani JQ, Almquist BD, Borrós S, Oliva N. Polyplex-Loaded Hydrogels for Local Gene Delivery to Human Dermal Fibroblasts. ACS Biomater Sci Eng 2021; 7:4347-4361. [PMID: 34081451 DOI: 10.1021/acsbiomaterials.1c00159] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Impaired cutaneous healing leading to chronic wounds affects between 2 and 6% of the total population in most developed countries and it places a substantial burden on healthcare budgets. Current treatments involving antibiotic dressings and mechanical debridement are often not effective, causing severe pain, emotional distress, and social isolation in patients for years or even decades, ultimately resulting in limb amputation. Alternatively, gene therapy (such as mRNA therapies) has emerged as a viable option to promote wound healing through modulation of gene expression. However, protecting the genetic cargo from degradation and efficient transfection into primary cells remain significant challenges in the push to clinical translation. Another limiting aspect of current therapies is the lack of sustained release of drugs to match the therapeutic window. Herein, we have developed an injectable, biodegradable and cytocompatible hydrogel-based wound dressing that delivers poly(β-amino ester)s (pBAEs) nanoparticles in a sustained manner over a range of therapeutic windows. We also demonstrate that pBAE nanoparticles, successfully used in previous in vivo studies, protect the mRNA load and efficiently transfect human dermal fibroblasts upon sustained release from the hydrogel wound dressing. This prototype wound dressing technology can enable the development of novel gene therapies for the treatment of chronic wounds.
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Affiliation(s)
- Jose Antonio Duran-Mota
- Grup d'Enginyeria de Materials (GEMAT), Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, Barcelona 08017, Spain.,Department of Bioengineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Júlia Quintanas Yani
- Grup d'Enginyeria de Materials (GEMAT), Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, Barcelona 08017, Spain.,Department of Bioengineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Benjamin D Almquist
- Department of Bioengineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Salvador Borrós
- Grup d'Enginyeria de Materials (GEMAT), Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, Barcelona 08017, Spain
| | - Nuria Oliva
- Department of Bioengineering, Imperial College London, London SW7 2AZ, United Kingdom
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12
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Monika P, Waiker PV, Chandraprabha MN, Rangarajan A, Murthy KNC. Myofibroblast progeny in wound biology and wound healing studies. Wound Repair Regen 2021; 29:531-547. [PMID: 34009713 DOI: 10.1111/wrr.12937] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 04/15/2021] [Accepted: 05/07/2021] [Indexed: 12/19/2022]
Abstract
Fibroblasts and myofibroblasts play a myriad of important roles in human tissue function, especially in wound repair and healing. Among all cells, fibroblasts are group of cells that decide the status of wound as they maintain tissue homeostasis. Currently, the increase in the deleterious effects of chronic wound and their morbidity rate has necessitated the need to understand the influence of fibroblasts and myofibroblasts, which chiefly originate locally from tissue-resident fibroblasts to address the same. Wound pathophysiology is complex, herein, we have discussed fibroblast and myofibroblast heterogeneity in skin and different organs by understanding the phenotypical and functional properties of each of its sub-populations in the process of wound healing. Recent advancements in fibroblast activation, differentiation to myofibroblasts, proliferation and migration are discussed in detail. Fibroblasts and myofibroblasts are key players in wound healing and wound remodelling, respectively, and their significance in wound repair is discussed. An increased understanding of their biology during wound healing also gives an opportunity to explore more of fibroblast and myofibroblast focused therapies to treat chronic wounds which are clinical challenges. In this regard, in the current review, we have described the different methods for isolation of primary fibroblasts and myofibroblasts from both animal models and humans, and their characterization. Additionally, we have also provided details on possible molecular targets for better understanding of prognosis, diagnosis and treatment of chronic wounds. Information will help both researchers and clinicians in providing molecular insight that enable them for effective chronic wound management. The knowledge of intimate dialogue between the fibroblast, sub-populations like, myofibroblast and their microenvironment, will serve useful in determining novel, efficient and specific therapeutic targets to treat pathological wound conditions.
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Affiliation(s)
- Prakash Monika
- Department of Biotechnology, M. S. Ramaiah Institute of Technology, Bangalore, India
| | | | | | - Annapoorni Rangarajan
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, India
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13
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Dengjel J, Bruckner-Tuderman L, Nyström A. Skin proteomics - analysis of the extracellular matrix in health and disease. Expert Rev Proteomics 2020; 17:377-391. [PMID: 32552150 DOI: 10.1080/14789450.2020.1773261] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
INTRODUCTION The skin protects the human body from external insults and regulates water and temperature homeostasis. A highly developed extracellular matrix (ECM) supports the skin and instructs its cell functions. Reduced functionality of the ECM is often associated with skin diseases that cause physical impairment and also have implications on social interactions and quality of life of affected individuals. AREAS COVERED With a focus on the skin ECM we discuss how mass spectrometry (MS)-based proteomic approaches first contributed to establishing skin protein inventories and then facilitated elucidation of molecular functions and disease mechanisms. EXPERT OPINION MS-based proteomic approaches have significantly contributed to our understanding of skin pathophysiology, but also revealed the challenges in assessing the skin ECM. The numerous posttranslational modifications of ECM proteins, like glycosylation, crosslinking, oxidation, and proteolytic maturation in disease settings can be difficult to tackle and remain understudied. Increased ease of handling of LC-MS/MS systems and automated/streamlined data analysis pipelines together with the accompanying increased usage of LC-MS/MS approaches will ensure that in the coming years MS-based proteomic approaches will continue to play a vital part in skin disease research. They will facilitate the elucidation of molecular disease mechanisms and, ultimately, identification of new druggable targets.
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Affiliation(s)
- Jörn Dengjel
- Department of Biology, University of Fribourg , Fribourg, Switzerland
| | - Leena Bruckner-Tuderman
- Department of Dermatology, Faculty of Medicine, Medical Center - University of Freiburg , Freiburg, University of Freiburg, Freiburg, Germany Germany
| | - Alexander Nyström
- Department of Dermatology, Faculty of Medicine, Medical Center - University of Freiburg , Freiburg, University of Freiburg, Freiburg, Germany Germany
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