1
|
Strenge JT, Smeets R, Nemati F, Fuest S, Rhode SC, Stuermer EK. Biodegradable Silk Fibroin Matrices for Wound Closure in a Human 3D Ex Vivo Approach. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3004. [PMID: 38930373 PMCID: PMC11205513 DOI: 10.3390/ma17123004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 06/13/2024] [Accepted: 06/15/2024] [Indexed: 06/28/2024]
Abstract
In this study, the potential of silk fibroin biomaterials for enhancing wound healing is explored, focusing on their integration into a human 3D ex vivo wound model derived from abdominoplasties. For this purpose, cast silk fibroin membranes and electrospun nonwoven matrices from Bombyx mori silk cocoons were compared to untreated controls over 20 days. Keratinocyte behavior and wound healing were analyzed qualitatively and quantitatively by histomorphometric and immune histochemical methods (HE, Ki67, TUNEL). Findings reveal rapid keratinocyte proliferation on both silk fibroin membrane and nonwoven matrices, along with enhanced infiltration in the matrix, suggesting improved early wound closure. Silk fibroin membranes exhibited a significantly improved early regeneration, followed by nonwoven matrices (p < 0.05) compared to untreated wounds, resulting in the formation of multi-layered epidermal structures with complete regeneration. Overall, the materials demonstrated excellent biocompatibility, supporting cell activity with no signs of increased apoptosis or early degradation. These results underscore silk fibroin's potential in clinical wound care, particularly in tissue integration and re-epithelialization, offering valuable insights for advanced and-as a result of the electrospinning technique-individual wound care development. Furthermore, the use of an ex vivo wound model appears to be a viable option for pre-clinical testing.
Collapse
Affiliation(s)
- Jan Tinson Strenge
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; (J.T.S.); (R.S.)
| | - Ralf Smeets
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; (J.T.S.); (R.S.)
- Department of Oral and Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; (F.N.); (S.F.)
| | - Fateme Nemati
- Department of Oral and Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; (F.N.); (S.F.)
- Institute of Bioprocess and Biosystems Engineering, Hamburg University, 21073 Hamburg, Germany
| | - Sandra Fuest
- Department of Oral and Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; (F.N.); (S.F.)
| | - Sophie Charlotte Rhode
- Department of Plastic, Reconstructive and Aesthetic Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany;
| | - Ewa Klara Stuermer
- Department for Vascular Medicine, Translational Wound Research, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| |
Collapse
|
2
|
Choudhary V, Choudhary M, Bollag WB. Exploring Skin Wound Healing Models and the Impact of Natural Lipids on the Healing Process. Int J Mol Sci 2024; 25:3790. [PMID: 38612601 PMCID: PMC11011291 DOI: 10.3390/ijms25073790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/21/2024] [Accepted: 03/23/2024] [Indexed: 04/14/2024] Open
Abstract
Cutaneous wound healing is a complex biological process involving a series of well-coordinated events aimed at restoring skin integrity and function. Various experimental models have been developed to study the mechanisms underlying skin wound repair and to evaluate potential therapeutic interventions. This review explores the diverse array of skin wound healing models utilized in research, ranging from rodent excisional wounds to advanced tissue engineering constructs and microfluidic platforms. More importantly, the influence of lipids on the wound healing process is examined, emphasizing their role in enhancing barrier function restoration, modulating inflammation, promoting cell proliferation, and promoting remodeling. Lipids, such as phospholipids, sphingolipids, and ceramides, play crucial roles in membrane structure, cell signaling, and tissue repair. Understanding the interplay between lipids and the wound microenvironment provides valuable insights into the development of novel therapeutic strategies for promoting efficient wound healing and tissue regeneration. This review highlights the significance of investigating skin wound healing models and elucidating the intricate involvement of lipids in the healing process, offering potential avenues for improving clinical outcomes in wound management.
Collapse
Affiliation(s)
- Vivek Choudhary
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (V.C.)
- Charlie Norwood VA Medical Center, Augusta, GA 30904, USA
| | - Mrunal Choudhary
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (V.C.)
| | - Wendy B. Bollag
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; (V.C.)
- Charlie Norwood VA Medical Center, Augusta, GA 30904, USA
- Department of Dermatology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
- Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
| |
Collapse
|
3
|
Bestepe F, Ghanem GF, Fritsche CM, Weston J, Sahay S, Mauro AK, Sahu P, Tas SM, Ruemmele B, Persing S, Good ME, Chatterjee A, Huggins GS, Salehi P, Icli B. MicroRNA-409-3p/BTG2 signaling axis improves impaired angiogenesis and wound healing in obese mice. FASEB J 2024; 38:e23459. [PMID: 38329343 DOI: 10.1096/fj.202302124rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/09/2024] [Accepted: 01/18/2024] [Indexed: 02/09/2024]
Abstract
Wound healing is facilitated by neoangiogenesis, a complex process that is essential to tissue repair in response to injury. MicroRNAs are small, noncoding RNAs that can regulate the wound healing process including stimulation of impaired angiogenesis that is associated with type-2 diabetes (T2D). Expression of miR-409-3p was significantly increased in the nonhealing skin wounds of patients with T2D compared to the non-wounded normal skin, and in the skin of a murine model with T2D. In response to high glucose, neutralization of miR-409-3p markedly improved EC growth and migration in human umbilical vein endothelial cells (HUVECs), promoted wound closure and angiogenesis as measured by increased CD31 in human skin organoids, while overexpression attenuated EC angiogenic responses. Bulk mRNA-Seq transcriptomic profiling revealed BTG2 as a target of miR-409-3p, where overexpression of miR-409-3p significantly decreased BTG2 mRNA and protein expression. A 3' untranslated region (3'-UTR) luciferase assay of BTG2 revealed decreased luciferase activity with overexpression of miR-409-3p, while inhibition had opposite effects. Mechanistically, in response to high glucose, miR-409-3p deficiency in ECs resulted in increased mTOR phosphorylation, meanwhile BTG-anti-proliferation factor 2 (BTG2) silencing significantly decreased mTOR phosphorylation. Endothelial-specific and tamoxifen-inducible miR-409-3p knockout mice (MiR-409IndECKO ) with hyperglycemia that underwent dorsal skin wounding showed significant improvement of wound closure, increased blood flow, granulation tissue thickness (GTT), and CD31 that correlated with increased BTG2 expression. Taken together, our results show that miR-409-3p is a critical mediator of impaired angiogenesis in diabetic skin wound healing.
Collapse
Affiliation(s)
- Furkan Bestepe
- Department of Medicine, Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA
| | - George F Ghanem
- Department of Medicine, Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA
| | - Colette M Fritsche
- Department of Medicine, Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA
| | - James Weston
- Department of Medicine, Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA
| | - Sumedha Sahay
- Department of Medicine, Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA
| | - Amanda K Mauro
- Department of Medicine, Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA
| | - Parul Sahu
- Department of Medicine, Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA
| | - Sude M Tas
- Department of Medicine, Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA
| | - Brooke Ruemmele
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Tufts Medical Center, Boston, Massachusetts, USA
| | - Sarah Persing
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Tufts Medical Center, Boston, Massachusetts, USA
| | - Miranda E Good
- Department of Medicine, Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA
| | - Abhishek Chatterjee
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Tufts Medical Center, Boston, Massachusetts, USA
| | - Gordon S Huggins
- Department of Medicine, Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA
| | - Payam Salehi
- Division of Vascular Surgery, Cardiovascular Center, Tufts Medical Center, Boston, Massachusetts, USA
| | - Basak Icli
- Department of Medicine, Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA
| |
Collapse
|
4
|
Cousin I, Misery L, de Vries P, Lebonvallet N. Emergence of New Concepts in Skin Physiopathology through the Use of in vitro Human Skin Explants Models. Dermatology 2023; 239:849-859. [PMID: 37717565 DOI: 10.1159/000533261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 07/20/2023] [Indexed: 09/19/2023] Open
Abstract
BACKGROUND This review summarizes uses and new applications for dermatological research of in vitro culture models of human skin explants (HSEs). In the last decade, many innovations have appeared in the literature and an exponential number of studies have been recorded in various fields of application such as process culture engineering, stem cell extractions methodology, or cell-to-cell interaction studies under physiological and pathological conditions, wound-healing, and inflammation. Most studies also concerned pharmacology, cosmetology, and photobiology. However, these topics will not be considered in our review. SUMMARY A better understanding of the mechanisms driving intercellular relationships, at work in the maintenance of 3D tissue architectures has led to the improvement of cell culture techniques. Many papers have focused on the physiological ways that govern in vitro tissue maintenance of HSEs. The analysis of the necessary mechanical stress, intercellular and cell-matrix interactions, allows the maintenance and prolonged use of HSEs in culture for up to 15 days, regardless of the great variability of study protocols from one laboratory to another and in accordance with the objectives set. Because of their close similarities to fresh skin, HSEs are increasingly used to study skin barrier repair and wound healing physiology. Easy to use in co-culture, this model allows a better understanding of the connections and interactions between the peripheral nervous system, the skin and the immune system. The development of the concept of an integrated neuro-immuno-cutaneous system at work in skin physiology and pathology highlighted by this article represents one of the new technical challenges in the field of in vitro culture of HSE. This review of the literature also reveals the importance of using such models in pathology. As sources of stem cells, HSEs are the basis for the development of new tissue engineering models such as organoids or optical clearing tissues technology. This study identifies the main advances and cross-cutting issues in the use of HSE.
Collapse
Affiliation(s)
- Ianis Cousin
- Laboratoire Interactions épithéliums Neurones, Université de Bretagne Occidentale, Brest, France
- Service de chirurgie pédiatrique CHRU de Brest, Brest, France
| | - Laurent Misery
- Laboratoire Interactions épithéliums Neurones, Université de Bretagne Occidentale, Brest, France
- Service de dermatologie CHRU de Brest, Brest, France
| | - Philine de Vries
- Laboratoire Interactions épithéliums Neurones, Université de Bretagne Occidentale, Brest, France
- Service de chirurgie pédiatrique CHRU de Brest, Brest, France
| | - Nicolas Lebonvallet
- Laboratoire Interactions épithéliums Neurones, Université de Bretagne Occidentale, Brest, France
| |
Collapse
|
5
|
SARIAN MN, ZULKEFLI N, CHE ZAIN MS, MANIAM S, FAKURAZI S. A review with updated perspectives on in vitro and in vivo wound healing models. Turk J Biol 2023; 47:236-246. [PMID: 38152620 PMCID: PMC10751087 DOI: 10.55730/1300-0152.2659] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 08/31/2023] [Accepted: 08/10/2023] [Indexed: 12/29/2023] Open
Abstract
A skin wound or perforation triggers a series of homeostatic reactions to safeguard internal organs from invasion by pathogens or other substances that could damage body tissues. An injury may occasionally heal quickly, leading to the closure of the skin's structure. Healing from chronic wounds takes a long time. Although many treatment options are available to manage wound healing, an unmet therapy need remains because of the complexity of the processes and the other factors involved. It is crucial to conduct consistent research on novel therapeutic approaches to find an effective healing agent. Therefore, this work aims to cover various in vitro and in vivo methodologies that could be utilised to examine wound recovery. Before deciding on the optimal course of action, several techniques' benefits, drawbacks, and factors need to be reviewed.
Collapse
Affiliation(s)
- Murni Nazira SARIAN
- Institute of Systems Biology (INBIOSIS), Universiti Kebangsaan Malaysia (National University of Malaysia), 43600, Bandar Baru Bangi, Selangor,
Malaysia
| | - Nabilah ZULKEFLI
- Institute of Systems Biology (INBIOSIS), Universiti Kebangsaan Malaysia (National University of Malaysia), 43600, Bandar Baru Bangi, Selangor,
Malaysia
| | - Mohamad Shazeli CHE ZAIN
- Bioresource Technology Division, School of Industrial Technology, Universiti Sains Malaysia (Science University of Malaysia), 11800, Pulau Pinang,
Malaysia
| | - Sandra MANIAM
- Faculty of Medicine and Health Sciences, Universiti Putra Malaysia (University of Putra Malaysia), Serdang 43400, Selangor,
Malaysia
| | - Sharida FAKURAZI
- Faculty of Medicine and Health Sciences, Universiti Putra Malaysia (University of Putra Malaysia), Serdang 43400, Selangor,
Malaysia
| |
Collapse
|
6
|
He C, Zhang W, Tu Y, Zhong L, Wang R, Teng Y, Liao IC, Ding C. Characterization of an ablative fractional CO 2 laser-induced wound-healing model based on in vitro 3D reconstructed skin. J Cosmet Dermatol 2023; 22:1495-1506. [PMID: 36683276 DOI: 10.1111/jocd.15597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/05/2022] [Accepted: 12/14/2022] [Indexed: 01/24/2023]
Abstract
OBJECTIVE This study describes the development and characterization of a novel in vitro wound-healing model based on a full-thickness reconstructed skin by exposing the tissue to fractional ablative laser treatment. METHOD A 3D full-thickness skin model was fabricated and treated with fractional ablative CO2 laser. Wound-healing process was characterized by HE staining, noninvasive OCT imaging, immunostaining, as well as transepidermal water loss measurement. Cytokines and proteins involved in the inflammatory and dermal remodeling process were studied by ELISA and protein array assays. RESULTS Fractional ablative CO2 treatment induced a wound zone of 9 mm in diameter, containing 56 micro-wounds with 200 μm diameter and 500-700 μm in depth on reconstructed full-thickness skin model. HE staining revealed a typical wound morphology and healing process with migration of keratinocytes, formation and extrusion of necrotic tissue, and cell inclusion in dermis, which correlates with clinical observations. Based on OCT and TEWL measurements, the re-epithelialization took place over 2 days. Laser-triggered keratinocytes proliferation and differentiation were demonstrated by activated Ki67 and Filaggrin expression respectively. Injury-invoked cytokine ICAM-1 showed instant upregulation on Day 1. Decreased epidermis thickness and depression of IGFBP-2 protein level synergistically indicated the unavoidable thermal side effects from laser treatment. Downregulated DKK-1 protein level and upregulation of α-SMA together implicated the risk of potential fibrosis post-laser treatment. CONCLUSION This in vitro laser wounded reconstructed skin model captured the key events of wound-healing process, could be used to investigate the mechanisms of wound-healing triggered by a commonly used beauty procedure, and also provides a valuable tool for evaluating the efficacy of novel actives for the post-procedure application.
Collapse
Affiliation(s)
- Chunyan He
- L'Oreal Research and Innovation, SHANGHAI, China
| | - Wei Zhang
- Shanghai Dermatology Hospital, SHANGHAI, China
| | - Yidong Tu
- L'Oreal Research and Innovation, SHANGHAI, China
| | | | - Ranran Wang
- L'Oreal Research and Innovation, SHANGHAI, China
| | - Yao Teng
- L'Oreal Research and Innovation, SHANGHAI, China
| | - I-Chien Liao
- L'Oreal Research and Innovation, CLARK, New Jersey, USA
| | - Chunmei Ding
- L'Oreal Research and Innovation, SHANGHAI, China
| |
Collapse
|
7
|
Bibby G, Krasniqi B, Reddy I, Sekar D, Ross K. Capturing the RNA castle: Exploiting MicroRNA inhibition for wound healing. FEBS J 2021; 289:5137-5151. [PMID: 34403569 DOI: 10.1111/febs.16160] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 07/14/2021] [Accepted: 08/16/2021] [Indexed: 02/06/2023]
Abstract
The growing pipelines of RNA-based therapies herald new opportunities to deliver better patient outcomes for complex disorders such as chronic nonhealing wounds associated with diabetes. Members of the microRNA (miRNA) family of small noncoding RNAs have emerged as targets for diverse elements of cutaneous wound repair, and both miRNA enhancement with mimics or inhibition with antisense oligonucleotides represent tractable approaches for miRNA-directed wound healing. In this review, we focus on miRNA inhibition strategies to stimulate skin repair given advances in chemical modifications to enhance the performance of antisense miRNA (anti-miRs). We first explore miRNAs whose inhibition in keratinocytes promotes keratinocyte migration, an essential part of re-epithelialisation during wound repair. We then focus on miRNAs that can be targeted for inhibition in endothelial cells to promote neovascularisation for wound healing in the context of diabetic mouse models. The picture that emerges is that direct comparisons of different anti-miRNAs modifications are required to establish the most translationally viable options in the chronic wound environment, that direct comparisons of the impact of inhibition of different miRNAs are needed to quantify and rank their relative efficacies in promoting wound repair, and that a standardised human ex vivo model of the diabetic wound is needed to reduce reliance on mouse models that do not necessarily enhance mechanistic understanding of miRNA-targeted wound healing.
Collapse
Affiliation(s)
- George Bibby
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, UK
| | - Blerta Krasniqi
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, UK
| | - Izaak Reddy
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, UK
| | - Durairaj Sekar
- Dental Research Cell and Biomedical Research Unit (DRC-BRULAC), Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Science (SIMATS), Saveetha University, Chennai, India
| | - Kehinde Ross
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, UK
| |
Collapse
|
8
|
Seyed Jafari SM, Blank F, Ramser HE, Woessner AE, Shafighi M, Geiser T, Quinn KP, Hunger RE, Gazdhar A. Efficacy of Combined in-vivo Electroporation-Mediated Gene Transfer of VEGF, HGF, and IL-10 on Skin Flap Survival, Monitored by Label-Free Optical Imaging: A Feasibility Study. Front Surg 2021; 8:639661. [PMID: 33834037 PMCID: PMC8021947 DOI: 10.3389/fsurg.2021.639661] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 02/22/2021] [Indexed: 12/12/2022] Open
Abstract
Preventing surgical flaps necrosis remains challenging. Laser Doppler imaging and ultrasound can monitor blood flow in flap regions, but they do not directly measure the cellular response to ischemia. The study aimed to investigate the efficacy of synergistic in-vivo electroporation-mediated gene transfer of interleukin 10 (IL-10) with either hepatocyte growth factor (HGF) or vascular endothelial growth factor (VEGF) on the survival of a modified McFarlane flap, and to evaluate the effect of the treatment on cell metabolism, using label-free fluorescence lifetime imaging. Fifteen male Wistar rats (290–320 g) were randomly divided in three groups: group-A (control group) underwent surgery and received no gene transfer. Group-B received electroporation mediated hIL-10 gene delivery 24 h before and VEGF gene delivery 24 h after surgery. Group-C received electroporation mediated hIL-10 gene delivery 24 h before and hHGF gene delivery 24 h after surgery. The animals were assessed clinically and histologically. In addition, label-free fluorescence lifetime imaging was performed on the flap. Synergistic electroporation mediated gene delivery significantly decreased flap necrosis (P = 0.0079) and increased mean vessel density (P = 0.0079) in treatment groups B and C compared to control group-A. NADH fluorescence lifetime analysis indicated an increase in oxidative phosphorylation in the epidermis of the group-B (P = 0.039) relative to controls. These findings suggested synergistic in-vivo electroporation-mediated gene transfer as a promising therapeutic approach to enhance viability and vascularity of skin flap. Furthermore, the study showed that combinational gene therapy promoted an increase in tissue perfusion and a relative increase in oxidative metabolism within the epithelium.
Collapse
Affiliation(s)
| | - Fabian Blank
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland.,Department of Pulmonary Medicine, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Hallie E Ramser
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR, United States
| | - Alan E Woessner
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR, United States
| | | | - Thomas Geiser
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland.,Department of Pulmonary Medicine, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Kyle P Quinn
- Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR, United States
| | - Robert E Hunger
- Department of Dermatology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Amiq Gazdhar
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland.,Department of Pulmonary Medicine, Inselspital, Bern University Hospital, Bern, Switzerland
| |
Collapse
|
9
|
Hofmann E, Fink J, Eberl A, Prugger EM, Kolb D, Luze H, Schwingenschuh S, Birngruber T, Magnes C, Mautner SI, Kamolz LP, Kotzbeck P. A novel human ex vivo skin model to study early local responses to burn injuries. Sci Rep 2021; 11:364. [PMID: 33432026 PMCID: PMC7801530 DOI: 10.1038/s41598-020-79683-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/23/2020] [Indexed: 01/29/2023] Open
Abstract
Burn injuries initiate numerous processes such as heat shock response, inflammation and tissue regeneration. Reliable burn models are needed to elucidate the exact sequence of local events to be able to better predict when local inflammation triggers systemic inflammatory processes. In contrast to other ex vivo skin culture approaches, we used fresh abdominal skin explants to introduce contact burn injuries. Histological and ultrastructural analyses confirmed a partial-thickness burn pathology. Gene expression patterns and cytokine production profiles of key mediators of the local inflammation, heat shock response, and tissue regeneration were analyzed for 24 h after burn injury. We found significantly increased expression of factors involved in tissue regeneration and inflammation soon after burn injury. To investigate purely inflammation-mediated reactions we injected lipopolysaccharide into the dermis. In comparison to burn injury, lipopolysaccharide injection initiated an inflammatory response while expression patterns of heat shock and tissue regeneration genes were unaffected for the duration of the experiment. This novel ex vivo human skin model is suitable to study the local, early responses to skin injuries such as burns while maintaining an intact overall tissue structure and it gives valuable insights into local mechanisms at the very beginning of the wound healing process after burn injuries.
Collapse
Affiliation(s)
- Elisabeth Hofmann
- COREMED-Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Julia Fink
- COREMED-Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - Anita Eberl
- HEALTH-Institute for Biomedicine and Health Sciences, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - Eva-Maria Prugger
- HEALTH-Institute for Biomedicine and Health Sciences, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - Dagmar Kolb
- Core Facility Ultrastructure Analysis, Center for Medical Research, Medical University of Graz, Graz, Austria
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Medical University of Graz, Graz, Austria
| | - Hanna Luze
- COREMED-Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Simon Schwingenschuh
- HEALTH-Institute for Biomedicine and Health Sciences, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - Thomas Birngruber
- HEALTH-Institute for Biomedicine and Health Sciences, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - Christoph Magnes
- HEALTH-Institute for Biomedicine and Health Sciences, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
| | - Selma I Mautner
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
- HEALTH-Institute for Biomedicine and Health Sciences, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
- Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria
| | - Lars-Peter Kamolz
- COREMED-Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Petra Kotzbeck
- COREMED-Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria.
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria.
- Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria.
| |
Collapse
|
10
|
Icli B, Li H, Pérez-Cremades D, Wu W, Ozdemir D, Haemmig S, Guimaraes RB, Manica A, Marchini JF, Orgill DP, Feinberg MW. MiR-4674 regulates angiogenesis in tissue injury by targeting p38K signaling in endothelial cells. Am J Physiol Cell Physiol 2020; 318:C524-C535. [PMID: 31913696 PMCID: PMC7099516 DOI: 10.1152/ajpcell.00542.2019] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 12/27/2019] [Accepted: 01/03/2020] [Indexed: 01/22/2023]
Abstract
Neoangiogenesis is critical for tissue repair in response to injury such as myocardial ischemia or dermal wound healing. MicroRNAs are small noncoding RNAs and important regulators of angiogenesis under physiological and pathological disease states. Therefore, identification of microRNAs that may restore impaired angiogenesis in response to tissue injury may provide new targets for therapy. Using a microRNA microarray profiling approach, we identified a human-specific microRNA, miR-4674, that was significantly decreased in patients after myocardial tissue injury and had an endothelial cell (EC)-enriched expression pattern. Functionally, overexpression of miR-4674 markedly attenuated EC proliferation, migration, network tube formation, and spheroid sprouting, whereas blockade of miR-4674 had the opposite effects. Transcriptomic profiling, gene set enrichment analyses, bioinformatics, 3'-untranslated region (3'-UTR) reporter and microribonucleoprotein immunoprecipitation (miRNP-IP) assays, and small interfering RNA dependency studies revealed that miR-4674 regulates VEGF stimulated-p38 mitogen-activated protein kinase (MAPK) signaling and targets interleukin 1 receptor-associated kinase 1 (Irak1) and BICD cargo adaptor 2 (Bicd2) in ECs. Furthermore, Irak1 and Bicd2 were necessary for miR-4674-driven EC proliferation and migration. Finally, neutralization of miR-4674 increased angiogenesis, Irak1 and Bicd2 expression, and p38 phosphorylation in human skin organoids as a model of tissue injury. Collectively, targeting miR-4674 may provide a novel therapeutic target for tissue repair in pathological disease states associated with impaired angiogenesis.
Collapse
Affiliation(s)
- Basak Icli
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Hao Li
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Daniel Pérez-Cremades
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
- Department of Physiology, University of Valencia and Fundación para la Investigación del Hospital Clínico de la Comunidad Valenciana (INCLIVA) Biomedical Research Institute, Valencia, Spain
| | - Winona Wu
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Denizhan Ozdemir
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
- Department of Medical Biology, Hacettepe University, Ankara, Turkey
| | - Stefan Haemmig
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Raphael Boesch Guimaraes
- Instituto de Cardiologia do Rio Grande do Sul, Fundação Universitária de Cardiologia (ICFUC), Porto Alegre, Rio Grande do Sul, Brazil
| | - Andre Manica
- Instituto de Cardiologia do Rio Grande do Sul, Fundação Universitária de Cardiologia (ICFUC), Porto Alegre, Rio Grande do Sul, Brazil
| | - Julio F Marchini
- Heart Institute, University of São Paulo Medical School, São Paulo, Brazil
| | - Dennis P Orgill
- Division of Plastic Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Mark W Feinberg
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| |
Collapse
|
11
|
Icli B, Wu W, Ozdemir D, Li H, Cheng HS, Haemmig S, Liu X, Giatsidis G, Avci SN, Lee N, Guimaraes RB, Manica A, Marchini JF, Rynning SE, Risnes I, Hollan I, Croce K, Yang X, Orgill DP, Feinberg MW. MicroRNA-615-5p Regulates Angiogenesis and Tissue Repair by Targeting AKT/eNOS (Protein Kinase B/Endothelial Nitric Oxide Synthase) Signaling in Endothelial Cells. Arterioscler Thromb Vasc Biol 2019; 39:1458-1474. [PMID: 31092013 PMCID: PMC6594892 DOI: 10.1161/atvbaha.119.312726] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 04/29/2019] [Indexed: 12/16/2022]
Abstract
Objective- In response to tissue injury, the appropriate progression of events in angiogenesis is controlled by a careful balance between pro and antiangiogenic factors. We aimed to identify and characterize microRNAs that regulate angiogenesis in response to tissue injury. Approach and Results- We show that in response to tissue injury, microRNA-615-5p (miR-615-5p) is rapidly induced and serves as an antiangiogenic microRNA by targeting endothelial cell VEGF (vascular endothelial growth factor)-AKT (protein kinase B)/eNOS (endothelial nitric oxide synthase) signaling in vitro and in vivo. MiR-615-5p expression is increased in wounds of diabetic db/db mice, in plasma of human subjects with acute coronary syndromes, and in plasma and skin of human subjects with diabetes mellitus. Ectopic expression of miR-615-5p markedly inhibited endothelial cell proliferation, migration, network tube formation in Matrigel, and the release of nitric oxide, whereas miR-615-5p neutralization had the opposite effects. Mechanistic studies using transcriptomic profiling, bioinformatics, 3' untranslated region reporter and microribonucleoprotein immunoprecipitation assays, and small interfering RNA dependency studies demonstrate that miR-615-5p inhibits the VEGF-AKT/eNOS signaling pathway in endothelial cells by targeting IGF2 (insulin-like growth factor 2) and RASSF2 (Ras-associating domain family member 2). Local delivery of miR-615-5p inhibitors, markedly increased angiogenesis, granulation tissue thickness, and wound closure rates in db/db mice, whereas miR-615-5p mimics impaired these effects. Systemic miR-615-5p neutralization improved skeletal muscle perfusion and angiogenesis after hindlimb ischemia in db/db mice. Finally, modulation of miR-615-5p expression dynamically regulated VEGF-induced AKT signaling and angiogenesis in human skin organoids as a model of tissue injury. Conclusions- These findings establish miR-615-5p as an inhibitor of VEGF-AKT/eNOS-mediated endothelial cell angiogenic responses and that manipulating miR-615-5p expression could provide a new target for angiogenic therapy in response to tissue injury. Visual Overview- An online visual overview is available for this article.
Collapse
Affiliation(s)
- Basak Icli
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Winona Wu
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Denizhan Ozdemir
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
- Department of Medical Biology, Hacettepe University, Ankara, Turkey
| | - Hao Li
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Henry S. Cheng
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Stefan Haemmig
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Xin Liu
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Giorgio Giatsidis
- Division of Plastic Surgery, Department of Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Seyma Nazli Avci
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Nathan Lee
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Raphael Boesch Guimaraes
- Instituto de Cardiologia do Rio Grande do Sul, Fundação Universitária de Cardiologia (ICFUC), Porto Alegre, RS, Brazil
| | - Andre Manica
- Instituto de Cardiologia do Rio Grande do Sul, Fundação Universitária de Cardiologia (ICFUC), Porto Alegre, RS, Brazil
| | - Julio F Marchini
- Heart Institute, University of São Paulo Medical School, São Paulo, Brazil
| | - Stein Erik Rynning
- Rheumatology, Lillehamer Hospital for Rheumatic Diseases, Lillehamer, Norway
| | - Ivar Risnes
- Rheumatology, Lillehamer Hospital for Rheumatic Diseases, Lillehamer, Norway
| | - Ivana Hollan
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
- Research Department, Lillehamer Hospital for Rheumatic Diseases, Lillehamer, Norway
| | - Kevin Croce
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | | | - Dennis P. Orgill
- Division of Plastic Surgery, Department of Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| | - Mark W. Feinberg
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
| |
Collapse
|
12
|
Icli B, Wu W, Ozdemir D, Li H, Haemmig S, Liu X, Giatsidis G, Cheng HS, Avci SN, Kurt M, Lee N, Guimaraes RB, Manica A, Marchini JF, Rynning SE, Risnes I, Hollan I, Croce K, Orgill DP, Feinberg MW. MicroRNA-135a-3p regulates angiogenesis and tissue repair by targeting p38 signaling in endothelial cells. FASEB J 2019; 33:5599-5614. [PMID: 30668922 PMCID: PMC6436660 DOI: 10.1096/fj.201802063rr] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 01/02/2019] [Indexed: 12/26/2022]
Abstract
Angiogenesis is a critical process in repair of tissue injury that is regulated by a delicate balance between pro- and antiangiogenic factors. In disease states associated with impaired angiogenesis, we identified that miR-135a-3p is rapidly induced and serves as an antiangiogenic microRNA (miRNA) by targeting endothelial cell (EC) p38 signaling in vitro and in vivo. MiR-135a-3p overexpression significantly inhibited EC proliferation, migration, and network tube formation in matrigel, whereas miR-135-3p neutralization had the opposite effects. Mechanistic studies using transcriptomic profiling, bioinformatics, 3'-UTR reporter and miRNA ribonucleoprotein complex -immunoprecipitation assays, and small interfering RNA dependency studies revealed that miR-135a-3p inhibits the p38 signaling pathway in ECs by targeting huntingtin-interacting protein 1 (HIP1). Local delivery of miR-135a-3p inhibitors to wounds of diabetic db/db mice markedly increased angiogenesis, granulation tissue thickness, and wound closure rates, whereas local delivery of miR-135a-3p mimics impaired these effects. Finally, through gain- and loss-of-function studies in human skin organoids as a model of tissue injury, we demonstrated that miR-135a-3p potently modulated p38 signaling and angiogenesis in response to VEGF stimulation by targeting HIP1. These findings establish miR-135a-3p as a pivotal regulator of pathophysiological angiogenesis and tissue repair by targeting a VEGF-HIP1-p38K signaling axis, providing new targets for angiogenic therapy to promote tissue repair.-Icli, B., Wu, W., Ozdemir, D., Li, H., Haemmig, S., Liu, X., Giatsidis, G., Cheng, H. S., Avci, S. N., Kurt, M., Lee, N., Guimaraes, R. B., Manica, A., Marchini, J. F., Rynning, S. E., Risnes, I., Hollan, I., Croce, K., Orgill, D. P., Feinberg, M. W. MicroRNA-135a-3p regulates angiogenesis and tissue repair by targeting p38 signaling in endothelial cells.
Collapse
Affiliation(s)
- Basak Icli
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Winona Wu
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Denizhan Ozdemir
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Department of Medical Biology, Hacettepe University, Ankara, Turkey
| | - Hao Li
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Stefan Haemmig
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Xin Liu
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Giorgio Giatsidis
- Division of Plastic Surgery, Department of Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Henry S. Cheng
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Seyma Nazli Avci
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Merve Kurt
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Nathan Lee
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Raphael Boesche Guimaraes
- Instituto de Cardiologia do Rio Grande do Sul, Fundação Universitária de Cardiologia (ICFUC), Porto Alegre, Rio Grande do Sul, Brazil
| | - Andre Manica
- Instituto de Cardiologia do Rio Grande do Sul, Fundação Universitária de Cardiologia (ICFUC), Porto Alegre, Rio Grande do Sul, Brazil
| | - Julio F. Marchini
- Heart Institute, University of São Paulo Medical School, São Paulo, Brazil
| | - Stein Erik Rynning
- Department of Cardiac Surgery, LHL Hospital Gardermoen, Jessheim, Norway
| | - Ivar Risnes
- Department of Cardiac Surgery, LHL Hospital Gardermoen, Jessheim, Norway
| | - Ivana Hollan
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Rheumatology Department, Lillehamer Hospital for Rheumatic Diseases, Lillehamer, Norway
- Research Department, Innlandet Hospital Trust, Brumunddal, Norway
| | - Kevin Croce
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Dennis P. Orgill
- Division of Plastic Surgery, Department of Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Mark W. Feinberg
- Cardiovascular Division, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| |
Collapse
|
13
|
Vostálová J, Galandáková A, Zálešák B, Lichnovská R, Čížková K, Ulrichová J, Rajnochová Svobodová A. Changes in antioxidant, inflammatory and metabolic markers during 1 week cultivation of human skin explants. J Appl Toxicol 2019; 39:773-782. [DOI: 10.1002/jat.3766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 11/16/2018] [Accepted: 11/26/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Jitka Vostálová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry; Palacký University; Hněvotínská 3 775 15 Olomouc Czech Republic
| | - Adéla Galandáková
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry; Palacký University; Hněvotínská 3 775 15 Olomouc Czech Republic
| | - Bohumil Zálešák
- Department of Plastic and Aesthetic Surgery; University Hospital Olomouc; I. P. Pavlova 6 779 00 Olomouc Czech Republic
| | - Radka Lichnovská
- Department of Histology and Embryology, Faculty of Medicine and Dentistry; Palacký University; Hněvotínská 3 775 15 Olomouc Czech Republic
| | - Kateřina Čížková
- Department of Histology and Embryology, Faculty of Medicine and Dentistry; Palacký University; Hněvotínská 3 775 15 Olomouc Czech Republic
| | - Jitka Ulrichová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry; Palacký University; Hněvotínská 3 775 15 Olomouc Czech Republic
| | - Alena Rajnochová Svobodová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry; Palacký University; Hněvotínská 3 775 15 Olomouc Czech Republic
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry,; Palacký University; Hněvotínská 3 775 15 Olomouc Czech Republic
| |
Collapse
|
14
|
Stone R, Wall JT, Natesan S, Christy RJ. PEG-Plasma Hydrogels Increase Epithelialization Using a Human Ex Vivo Skin Model. Int J Mol Sci 2018; 19:ijms19103156. [PMID: 30322172 PMCID: PMC6213988 DOI: 10.3390/ijms19103156] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 10/06/2018] [Accepted: 10/12/2018] [Indexed: 12/27/2022] Open
Abstract
In vitro cell culture methods are used extensively to study cellular migration, proliferation, and differentiation, which play major roles in wound healing but the results often do not translate to the in vivo environment. One alternative would be to establish an ex vivo model utilizing human discarded skin to evaluate therapies in a more natural setting. The purpose of this study was to institute such a model by creating ‘wounds’ in the center of a piece of discarded skin and treating them with three different biomaterials: collagen, polyethylene glycol (PEG)-fibrin, or PEG-platelet free plasma (PFP). Explants were cultured for 14 days with supernatant and microscopy images collected every 3 days to assess cytotoxicity and epithelialization. After 14 days, the explants were fixed, sectioned, and stained for cytokeratin-10 (CK-10), alpha-smooth muscle actin (α-SMA), and wheat germ (WG). Compared to controls, similar levels of cytotoxicity were detected for 12 days which decreased slightly at day 14. The PEG-PFP hydrogel-treated wounds epithelialized faster than other treatments at days 6 to 14. A 6-8 cell layer thick CK-10+ stratified epidermis had developed over the PEG-PFP hydrogel and cells co-stained by WG and α-SMA were observed within the hydrogel. An ex vivo model was established that can be used practically to screen different therapies exploring wound healing.
Collapse
Affiliation(s)
- Randolph Stone
- Combat Trauma and Burn Injury Research, US Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234-6315, USA.
| | | | | | | |
Collapse
|
15
|
Systems for localized release to mimic paracrine cell communication in vitro. J Control Release 2018; 278:24-36. [PMID: 29601931 DOI: 10.1016/j.jconrel.2018.03.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 03/24/2018] [Accepted: 03/26/2018] [Indexed: 12/27/2022]
Abstract
Paracrine cell communication plays a pivotal role for signal exchange between proximal cells in vivo. However, this localized, gradient type release of mediators at very low concentrations (pg/ml), relevant during physiological and pathological processes, is rarely reflected within in vitro approaches. This review gives an overview on state-of-the-art approaches, which transfer the paracrine cell-to-cell communication into in vitro cell culture model setups. The traditional methods like trans-well assays and more advanced microfluidic approaches are included. The review focusses on systems for localized release, mostly based on microparticles, which tightly mimic the paracrine interaction between single cells in 3D microenvironments. Approaches based on single microparticles, with the main focus on affinity-controlled storage and release of cytokines, are reviewed and their importance for understanding paracrine communication is highlighted. Various methods to study the cytokine release and their advantages and disadvantages are discussed. Basic principles of the release characteristics, like diffusion mechanisms, are quantitatively described, including the formation of resulting gradients around the local sources. In vitro cell experiments using such localized microparticle release systems in approaches to increase understanding of stem cell behavior within their niches and regulation of wound healing are highlighted as examples of successful localized release systems for mimicking paracrine cell communication.
Collapse
|
16
|
Seyed Jafari SM, Shafighi M, Beltraminelli H, Weber B, Schmid RA, Geiser T, Gazdhar A, Hunger RE. Efficacy of In Vivo Electroporation-Mediated IL-10 Gene Delivery on Survival of Skin Flaps. J Membr Biol 2017; 251:211-219. [PMID: 28776087 DOI: 10.1007/s00232-017-9974-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 07/29/2017] [Indexed: 12/29/2022]
Abstract
Despite advances in understanding the underlying mechanisms of flap necrosis and improvement in surgical techniques, skin flap necrosis after reconstructive surgery remains a crucial issue. We investigated the efficacy of electroporation-mediated IL-10 gene transfer to random skin flap with an aim to accelerate wound healing and improve skin flap survival. Nine male Wistar rats (300-330 g) were divided in two groups (a) control group (n = 5), only surgery no gene transfer, and (b) experimental group, received electroporation-mediated IL-10 gene transfer 24 h before the surgery as prophylaxis (n = 4). Random skin flap (McFarlane) was performed in both groups. Planimetry, Laser Doppler imaging, and immunohistochemistry were used to evaluate the effect of IL-10 gene transfer between study groups at day 7. Electroporation-mediated IL-10 gene transfer decreased percentage of flap necrosis (p value = 0.0159) and increased cutaneous perfusion compared to the control group (p value = 0.0159). In addition, Spearman's rank correlation showed a significant negative correlation between percentage of flap necrosis and Laser Index (p value = 0.0083, r -0.83, respectively). Furthermore, significantly higher mean CD31+ vessel density was detected in the experimental group compared to the control group (p value = 0.0159). Additionally, semi-quantitative image analysis showed lower inflammatory cell count in experimental group compared to control group (p value = 0.0317). In vivo electroporation-mediated IL-10 gene transfer reduced necrosis, enhanced survival and vascularity in the ischemic skin flap.
Collapse
Affiliation(s)
- S Morteza Seyed Jafari
- Department of Dermatology, Inselspital, Bern University Hospital, Bern, Switzerland
- Department of Clinical Research, University of Bern, Bern, Switzerland
- Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Maziar Shafighi
- Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Helmut Beltraminelli
- Department of Dermatology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Benedikt Weber
- Department of Dermatology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Ralph A Schmid
- Department of General Thoracic Surgery, University Hospital, Bern, Switzerland
| | - Thomas Geiser
- Department of Clinical Research, University of Bern, Bern, Switzerland
- Department of Pulmonary Medicine, University Hospital, Inselspital Bern, Bern, Switzerland
| | - Amiq Gazdhar
- Department of Clinical Research, University of Bern, Bern, Switzerland.
- Department of Pulmonary Medicine, University Hospital, Inselspital Bern, Bern, Switzerland.
| | - Robert E Hunger
- Department of Dermatology, Inselspital, Bern University Hospital, Bern, Switzerland
- Department of Clinical Research, University of Bern, Bern, Switzerland
| |
Collapse
|
17
|
Raaby L, Rosada C, Langkilde A, Lauridsen KL, Vinter H, Ommen P, Kjellerup RB, Johansen C, Iversen L. Langerhans cell markers CD1a and CD207 are the most rapidly responding genes in lesional psoriatic skin following adalimumab treatment. Exp Dermatol 2017; 26:804-810. [PMID: 28109175 DOI: 10.1111/exd.13304] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/12/2017] [Indexed: 11/29/2022]
Abstract
TNFα-, IL-23- and IL-17-targeting drugs are highly effective in the treatment of psoriasis. However, the precise molecular mechanism remains unknown. In psoriatic skin, the presence of Langerhans cells (LCs) is reduced, but the role of LC is poorly understood. The purpose of this study was to investigate the impact of TNFα and IL-23/IL-17 on the presence of LC in the skin during treatment. Therefore, psoriatic skin was investigated before and after 4 days of adalimumab or ustekinumab treatment. Furthermore, TNFα and IL-17A stimulation was investigated in an ex vivo model of epidermis and dermis from healthy normal skin kept in cultures at an air-liquid interphase for 4 days. In a gene array analysis, we found that the two LC markers, CD1a and CD207, were among the most up- or downregulated genes in psoriatic skin after anti-TNFα therapy. Validation showed that both mRNA expression and protein level followed the same pattern and became significantly upregulated after 4 days of treatment. No changes were seen after ustekinumab treatment. In the ex vivo skin model, a decrease in the CD1a level was seen after TNFα stimulation and it was caused by LC migration from epidermis. No response in LC migration was seen after IL-17A stimulation. Taken together, we demonstrated that changes in the LC level in epidermis precede the histological and clinical changes during adalimumab treatment in psoriatic skin. Furthermore, TNFα plays a prominent role in orchestrating LC migration in the skin. This seems not to be the true for the IL-23/IL-17A pathway.
Collapse
Affiliation(s)
- Line Raaby
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark.,Department of Pathology, Aarhus University Hospital, Aarhus, Denmark
| | - Cecilia Rosada
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Ane Langkilde
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | | | - Hanne Vinter
- Department of Pathology, Aarhus University Hospital, Aarhus, Denmark
| | - Pernille Ommen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | | | - Claus Johansen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| | - Lars Iversen
- Department of Dermatology, Aarhus University Hospital, Aarhus, Denmark
| |
Collapse
|
18
|
Ud-Din S, Bayat A. Non-animal models of wound healing in cutaneous repair: In silico, in vitro, ex vivo, and in vivo models of wounds and scars in human skin. Wound Repair Regen 2017; 25:164-176. [DOI: 10.1111/wrr.12513] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 12/15/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Sara Ud-Din
- Plastic and Reconstructive Surgery Research, Centre for Dermatology Research; University of Manchester; Manchester United Kingdom
| | - Ardeshir Bayat
- Plastic and Reconstructive Surgery Research, Centre for Dermatology Research; University of Manchester; Manchester United Kingdom
- Bioengineering Research Group, School of Materials, Faculty of Engineering & Physical Sciences; The University of Manchester; Manchester United Kingdom
| |
Collapse
|
19
|
Jaurila H, Koivukangas V, Koskela M, Gäddnäs F, Salo S, Korvala J, Risteli M, Karhu T, Herzig KH, Salo T, Ala-Kokko TI. Inhibitory effects of serum from sepsis patients on epithelial cell migration in vitro: a case control study. J Transl Med 2017; 15:11. [PMID: 28086962 PMCID: PMC5237124 DOI: 10.1186/s12967-016-1110-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 12/14/2016] [Indexed: 12/05/2022] Open
Abstract
Background Sepsis delays wound re-epithelialization. In this study we explored the effect of human sepsis sera as well as the effects of cytokines, growth factors and exosomes of sepsis sera treated normal fibroblasts (NF) on keratinocyte migration and proliferation in vitro. Methods Serum samples were taken on days 1, 4, and 9 from 44 patients diagnosed with severe sepsis, and from 14 matching healthy controls. We evaluated the effects of sepsis serum with or without TNF-α, EGF, EGF receptor inhibitor or exosomes of sepsis sera treated NF on human keratinocyte (HaCaT) proliferation (BrdU assay), viability (MTT assay), and migration (horizontal wound healing model). Cytokine levels of sepsis and healthy sera were measured by multiplex assay. Comparisons between groups were carried out using SPSS statistics and P < 0.05 was considered significant. Results Severe-sepsis sera collected on days 1, 4, and 9 reduced keratinocyte proliferation by 6% (P = 0.005), 20% (P = 0.001), and 18% (P = 0.002), respectively, compared to control sera. Cell viability in cultures exposed to sepsis sera from days 4 and 9 was reduced by 38% (P = 0.01) and 58% (P < 0.001), respectively. Open-surface wounds exposed to sepsis sera from days 1 and 4 were larger than those exposed to sera from healthy controls (60 vs. 31%, P = 0.034 and 66 vs. 31%, P = 0.023, respectively). Exosomes of sepsis or healthy sera treated NF inhibited keratinocyte migration. We detected higher serum levels of cytokines TNF-α (5.7 vs. 0.7 pg/ml, P < 0.001), IL-6 (24.8 vs. 3.8 pg/ml, P < 0.001), IL-10 (30.0 vs. 11.9 pg/ml, P = 0.040), and VEGF (177.9 vs. 48.1 pg/ml, P = 0.018) in sepsis sera. Levels of EGF were significantly lower in sepsis sera than in that of healthy controls (6.5 vs. 115.6 pg/ml, P < 0.001). Sepsis serum supplemented with EGF 5 ng/ml and TNF-α in all concentrations improved keratinocyte migration. Conclusions Keratinocyte viability, proliferation and migration were reduced in severe sepsis in vitro. Exosomes from NF added in healthy or sepsis serum media inhibited keratinocyte migration. Decreased levels of EGF in sepsis sera may partially explain the delay of wound healing with severe-sepsis patients. Increased levels of TNF-α in sepsis sera do not explain diminished keratinocyte migration.
Collapse
Affiliation(s)
- Henna Jaurila
- Research Group of Surgery, Anesthesia and Intensive Care, Oulu University Hospital, P. O. Box 21, 90029, Oulu, Finland. .,Cancer and Translational Medicine Research Unit, Faculty of Medicine, Medical Research Center Oulu, University of Oulu, P.O. Box 5281, 90014, Oulu, Finland.
| | - Vesa Koivukangas
- Research Group of Surgery, Anesthesia and Intensive Care, Oulu University Hospital, P. O. Box 21, 90029, Oulu, Finland
| | - Marjo Koskela
- Research Group of Surgery, Anesthesia and Intensive Care, Oulu University Hospital, P. O. Box 21, 90029, Oulu, Finland
| | - Fiia Gäddnäs
- Research Group of Surgery, Anesthesia and Intensive Care, Oulu University Hospital, P. O. Box 21, 90029, Oulu, Finland
| | - Sirpa Salo
- Research Group of Biomedicine, Faculty of Biochemistry and Molecular Medicine, University of Oulu, P. O. Box 5000, Oulu, 90014, Finland
| | - Johanna Korvala
- Cancer and Translational Medicine Research Unit, Faculty of Medicine, Medical Research Center Oulu, University of Oulu, P.O. Box 5281, 90014, Oulu, Finland
| | - Maija Risteli
- Cancer and Translational Medicine Research Unit, Faculty of Medicine, Medical Research Center Oulu, University of Oulu, P.O. Box 5281, 90014, Oulu, Finland
| | - Toni Karhu
- Research Unit of Biomedicine, Faculty of Medicine and Biocenter of Oulu, University of Oulu, P.O. Box 5000, Oulu, 90014, Finland
| | - Karl-Heinz Herzig
- Research Unit of Biomedicine, Faculty of Medicine and Biocenter of Oulu, University of Oulu, P.O. Box 5000, Oulu, 90014, Finland.,Department of Gastroenterology and Metabolism, Poznan University of Medical Sciences, Collegium Maius, Fredry 10, 61-701, Poznan, Poland
| | - Tuula Salo
- Cancer and Translational Medicine Research Unit, Faculty of Medicine, Medical Research Center Oulu, University of Oulu, P.O. Box 5281, 90014, Oulu, Finland.,Research Group of Oral Health Sciences, Oulu University Hospital, Medical Research Center Oulu, University of Oulu, P. O. Box 5000, Oulu, 90014, Finland
| | - Tero I Ala-Kokko
- Research Group of Surgery, Anesthesia and Intensive Care, Oulu University Hospital, P. O. Box 21, 90029, Oulu, Finland
| |
Collapse
|
20
|
Ambrozova N, Ulrichova J, Galandakova A. Models for the study of skin wound healing. The role of Nrf2 and NF-κB. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2017; 161:1-13. [PMID: 28115750 DOI: 10.5507/bp.2016.063] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 12/13/2016] [Indexed: 02/03/2023] Open
Abstract
Nrf2 and NF-κB transcription factors act in wound healing via their anti-inflammatory and anti-oxidant effects or through the immune response. Studying this process is a matter of some importance given the high cost of wound treatment. A major contribution in this regard is being made by models that enable investigation of the involvement of multiple factors in wound healing and testing new curative substances. This literature review was carried out via searches in the PubMed and Web of Science databases up to 2016. It covers skin wound healing, available models for its study (part I), the role of Nrf2 and NF-κB, substances that influence them and whether they can be used as markers (part II). Was found that in vitro assays are used for their availability but a holistic view must be established in vivo. In silico approaches are facilitating assessment of a vast amount of research data. Nfr2 and NF-κB play a crucial and reciprocal role in wound healing. Nrf2 controls repair-associated inflammation and protects against excessive accumulation of ROS while Nf-κB activates the innate immune reaction, proliferation and migration of cells, modulates expression of matrix metalloproteinases, secretion and stability of cytokines and growth factors for wound healing.
Collapse
Affiliation(s)
- Nikola Ambrozova
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic.,Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
| | - Jitka Ulrichova
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic.,Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
| | - Adela Galandakova
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic.,Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
| |
Collapse
|
21
|
Mendoza-Garcia J, Sebastian A, Alonso-Rasgado T, Bayat A. Optimization of an ex vivo wound healing model in the adult human skin: Functional evaluation using photodynamic therapy. Wound Repair Regen 2015; 23:685-702. [PMID: 26094764 DOI: 10.1111/wrr.12325] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Revised: 05/08/2015] [Accepted: 06/01/2015] [Indexed: 01/09/2023]
Abstract
Limited utility of in vitro tests and animal models of human repair, create a demand for alternative models of cutaneous healing capable of functional testing. The adult human skin Wound Healing Organ Culture (WHOC) provides a useful model, to study repair and enable evaluation of therapies such as the photodynamic therapy (PDT). Thus, the aim here was to identify the optimal WHOC model and to evaluate the role of PDT in repair. Wound geometry, system of support, and growth media, cellular and matrix biomarkers were investigated in WHOC models. Subsequently, cellular activity, extracellular matrix remodeling, and oxidative stress plus gene and protein levels of makers of wound repair measured the effect of PDT on the optimized WHOC. WHOCs embedded in collagen and supplemented DMEM were better organized showing stratified epidermis and compact dermis with developing neo-epidermis. Post-PDT, the advancing reepithelialization tongue was 3.5 folds longer, and was highly proliferative with CK-14 plus p16 increased (p < 0.05) compared to controls. The neo-epidermis was fully differentiated forming neo-collagen. Proliferating nuclear antigen, p16, COLI, COLIII, MMP3, MMP19, and α-SMA were significantly more expressed (p < 0.05) in dermis surrounding the healing wound. In conclusion, an optimal model of WHOC treated with PDT shows increased reepithelialization and extracellular matrix reconstruction and remodeling, supporting evidence toward development of an optimal ex vivo wound healing model.
Collapse
Affiliation(s)
- Jenifer Mendoza-Garcia
- Bioengineering Group, School of Materials.,Plastic Reconstructive Surgery Research Group, Manchester Institute of Biotechnology (MIB)
| | - Anil Sebastian
- Plastic Reconstructive Surgery Research Group, Manchester Institute of Biotechnology (MIB)
| | | | - Ardeshir Bayat
- Bioengineering Group, School of Materials.,Plastic Reconstructive Surgery Research Group, Manchester Institute of Biotechnology (MIB).,Center for Dermatology, Institute of Inflammation and Repair, Faculty of Medical and Human Sciences, Manchester Academic Health Science Centre, The University of Manchester, Manchester, United Kingdom
| |
Collapse
|
22
|
Marquardt Y, Amann PM, Heise R, Czaja K, Steiner T, Merk HF, Skazik‐Voogt C, Baron JM. Characterization of a novel standardized human three‐dimensional skin wound healing model using non‐sequential fractional ultrapulsed CO
2
laser treatments. Lasers Surg Med 2015; 47:257-65. [DOI: 10.1002/lsm.22341] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/30/2014] [Indexed: 01/13/2023]
Affiliation(s)
- Yvonne Marquardt
- Department of Dermatology and AllergologyRWTH Aachen UniversityAachenGermany
| | - Philipp M. Amann
- Department of Dermatology and AllergologyRWTH Aachen UniversityAachenGermany
| | - Ruth Heise
- Department of Dermatology and AllergologyRWTH Aachen UniversityAachenGermany
| | - Katharina Czaja
- Department of Dermatology and AllergologyRWTH Aachen UniversityAachenGermany
| | - Timm Steiner
- Department of Oral and Maxillofacial SurgeryMedical FacultyRWTH Aachen UniversityAachenGermany
| | - Hans F. Merk
- Department of Dermatology and AllergologyRWTH Aachen UniversityAachenGermany
| | | | - Jens M. Baron
- Department of Dermatology and AllergologyRWTH Aachen UniversityAachenGermany
| |
Collapse
|