1
|
Izumi K, Yortchan W, Aizawa Y, Kobayashi R, Hoshikawa E, Ling Y, Suzuki A. Recent trends and perspectives in reconstruction and regeneration of intra/extra-oral wounds using tissue-engineered oral mucosa equivalents. JAPANESE DENTAL SCIENCE REVIEW 2023; 59:365-374. [PMID: 37954029 PMCID: PMC10632115 DOI: 10.1016/j.jdsr.2023.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/25/2023] [Accepted: 10/19/2023] [Indexed: 11/14/2023] Open
Abstract
Many conditions, including cancer, trauma, and congenital anomalies, can damage the oral mucosa. Multiple cultures of oral mucosal cells have been used for biocompatibility tests and oral biology studies. In recent decades, the clinical translation of tissue-engineered products has progressed significantly in developing tangible therapies and inspiring advancements in medical science. However, the reconstruction of an intraoral mucosa defect remains a significant challenge. Despite the drawbacks of donor-site morbidity and limited tissue supply, the use of autologous oral mucosa remains the gold standard for oral mucosa reconstruction and repair. Tissue engineering offers a promising solution for repairing and reconstructing oral mucosa tissues. Cell- and scaffold-based tissue engineering approaches have been employed to treat various soft tissue defects, suggesting the potential clinical use of tissue-engineered oral mucosa (TEOMs). In this review, we first cover the recent trends in the reconstruction and regeneration of extra-/intra-oral wounds using TEOMs. Next, we describe the current status and challenges of TEOMs. Finally, future strategic approaches and potential technologies to support the advancement of TEOMs for clinical use are discussed.
Collapse
Affiliation(s)
- Kenji Izumi
- Division of Biomimetics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Japan
| | - Witsanu Yortchan
- Division of Biomimetics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Japan
- Department of Preventive Dentistry, Faculty of Dentistry, Naresuan University, Phitsanulok, Thailand
| | - Yuka Aizawa
- Division of Biomimetics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Japan
- Division of Oral and Maxillofacial Surgery, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Japan
| | - Ryota Kobayashi
- Division of Biomimetics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Japan
- Division of Oral and Maxillofacial Surgery, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Japan
| | - Emi Hoshikawa
- Division of Biomimetics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Japan
- Division of Periodontology, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Japan
| | - Yiwei Ling
- Division of Bioinformatics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Ayako Suzuki
- Division of Biomimetics, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Japan
| |
Collapse
|
2
|
Masson-Meyers DS, Bertassoni LE, Tayebi L. Oral mucosa equivalents, prevascularization approaches, and potential applications. Connect Tissue Res 2022; 63:514-529. [PMID: 35132918 PMCID: PMC9357199 DOI: 10.1080/03008207.2022.2035375] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 01/10/2022] [Indexed: 02/03/2023]
Abstract
BACKGROUND Oral mucosa equivalents (OMEs) have been used as in vitro models (eg, for studies of human oral mucosa biology and pathology, toxicological and pharmacological tests of oral care products), and clinically to treat oral defects. However, the human oral mucosa is a highly vascularized tissue and implantation of large OMEs can fail due to a lack of vascularization. To develop equivalents that better resemble the human oral mucosa and increase the success of implantation to repair large-sized defects, efforts have been made to prevascularize these constructs. PURPOSE The aim of this narrative review is to provide an overview of the human oral mucosa structure, common approaches for its reconstruction, and the development of OMEs, their prevascularization, and in vitro and clinical potential applications. STUDY SELECTION Articles on non-prevascularized and prevascularized OMEs were included, since the development and applications of non-prevascularized OMEs are a foundation for the design, fabrication, and optimization of prevascularized OMEs. CONCLUSIONS Several studies have reported the development and in vitro and clinical applications of OMEs and only a few were found on prevascularized OMEs using different approaches of fabrication and incorporation of endothelial cells, indicating a lack of standardized protocols to obtain these equivalents. However, these studies have shown the feasibility of prevascularizing OMEs and their implantation in animal models resulted in enhanced integration and healing. Vascularization in tissue equivalents is still a challenge, and optimization of cell culture conditions, biomaterials, and fabrication techniques along with clinical studies is required.
Collapse
Affiliation(s)
| | - Luiz E. Bertassoni
- School of Dentistry, Oregon Health and Science University. Portland, OR 97201, USA
| | - Lobat Tayebi
- Marquette University School of Dentistry. Milwaukee, WI 53233, USA
| |
Collapse
|
3
|
Polymerizable Skin Hydrogel for Full Thickness Wound Healing. Int J Mol Sci 2022; 23:ijms23094837. [PMID: 35563225 PMCID: PMC9100232 DOI: 10.3390/ijms23094837] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 04/25/2022] [Accepted: 04/26/2022] [Indexed: 12/11/2022] Open
Abstract
The skin is the largest organ in the human body, comprising the main barrier against the environment. When the skin loses its integrity, it is critical to replace it to prevent water loss and the proliferation of opportunistic infections. For more than 40 years, tissue-engineered skin grafts have been based on the in vitro culture of keratinocytes over different scaffolds, requiring between 3 to 4 weeks of tissue culture before being used clinically. In this study, we describe the development of a polymerizable skin hydrogel consisting of keratinocytes and fibroblast entrapped within a fibrin scaffold. We histologically characterized the construct and evaluated its use on an in vivo wound healing model of skin damage. Our results indicate that the proposed methodology can be used to effectively regenerate skin wounds, avoiding the secondary in vitro culture steps and thus, shortening the time needed until transplantation in comparison with other bilayer skin models. This is achievable due to the instant polymerization of the keratinocytes and fibroblast combination that allows a direct application on the wound. We suggest that the polymerizable skin hydrogel is an inexpensive, easy and rapid treatment that could be transferred into clinical practice in order to improve the treatment of skin wounds.
Collapse
|
4
|
Lv X, Huang X, Ma B, Chen Y, Batool Z, Fu X, Jin Y. Modification methods and applications of egg protein gel properties: A review. Compr Rev Food Sci Food Saf 2022; 21:2233-2252. [PMID: 35293118 DOI: 10.1111/1541-4337.12907] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 11/24/2021] [Accepted: 12/22/2021] [Indexed: 01/11/2023]
Abstract
Egg protein (EP) has a variety of functional properties, such as gelling, foaming, and emulsifying. The gel characteristics provide a foundation for applications in the food industry and research on EP. The proteins denature and aggregate to form a dense three-dimensional gel network structure, with a process influenced by protein concentration, pH, ion type, and strength. In addition, the gelation properties of EP can be altered to varying degrees by applying different treatment conditions to EP. Currently, modification methods for proteins include physical modification (heat-induced denaturation, freeze-thaw modification, high-pressure modification, and ultrasonic modification), chemical modification (glycosylation modification, phosphorylation modification, acylation modification, ethanol modification, polyphenol modification), and biological modification (enzyme modification). Pidan, salted eggs, egg tofu, and other egg products have unique sensory properties, due to the gel properties of EP. In accessions, EP has also been used as a new ingredient in food packaging and biopharmaceuticals due to its gel properties. This review will further promote EP gel research and provide guidance for its full application in many fields.
Collapse
Affiliation(s)
- Xiaohui Lv
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Xi Huang
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Bin Ma
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Yue Chen
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Zahra Batool
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Xing Fu
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Yongguo Jin
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
| |
Collapse
|
5
|
Pereira D, Sequeira I. A Scarless Healing Tale: Comparing Homeostasis and Wound Healing of Oral Mucosa With Skin and Oesophagus. Front Cell Dev Biol 2021; 9:682143. [PMID: 34381771 PMCID: PMC8350526 DOI: 10.3389/fcell.2021.682143] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 06/24/2021] [Indexed: 12/14/2022] Open
Abstract
Epithelial tissues are the most rapidly dividing tissues in the body, holding a natural ability for renewal and regeneration. This ability is crucial for survival as epithelia are essential to provide the ultimate barrier against the external environment, protecting the underlying tissues. Tissue stem and progenitor cells are responsible for self-renewal and repair during homeostasis and following injury. Upon wounding, epithelial tissues undergo different phases of haemostasis, inflammation, proliferation and remodelling, often resulting in fibrosis and scarring. In this review, we explore the phenotypic differences between the skin, the oesophagus and the oral mucosa. We discuss the plasticity of these epithelial stem cells and contribution of different fibroblast subpopulations for tissue regeneration and wound healing. While these epithelial tissues share global mechanisms of stem cell behaviour for tissue renewal and regeneration, the oral mucosa is known for its outstanding healing potential with minimal scarring. We aim to provide an updated review of recent studies that combined cell therapy with bioengineering exporting the unique scarless properties of the oral mucosa to improve skin and oesophageal wound healing and to reduce fibrotic tissue formation. These advances open new avenues toward the ultimate goal of achieving scarless wound healing.
Collapse
Affiliation(s)
| | - Inês Sequeira
- Institute of Dentistry, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| |
Collapse
|
6
|
Paternoster JL, Vranckx JJ. State of the art of clinical applications of Tissue Engineering in 2021. TISSUE ENGINEERING PART B-REVIEWS 2021; 28:592-612. [PMID: 34082599 DOI: 10.1089/ten.teb.2021.0017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Tissue engineering (TE) was introduced almost 30 years ago as a potential technique for regenerating human tissues. However, despite promising laboratory findings, the complexity of the human body, scientific hurdles, and lack of persistent long-term funding still hamper its translation towards clinical applications. In this report, we compile an inventory of clinically applied TE medical products relevant to surgery. A review of the literature, including articles published within the period from 1991 to 2020, was performed according to the PRISMA protocol, using databanks PubMed, Cochrane Library, Web of Science, and Clinicaltrials.gov. We identified 1039 full-length articles as eligible; due to the scarcity of clinical, randomised, controlled trials and case studies, we extended our search towards a broad surgical spectrum. Forty papers involved clinical TE studies. Amongst these, 7 were related to TE protocols for cartilage applied in the reconstruction of nose, ear, and trachea. Nine papers reported TE protocols for articular cartilage, 9 for urological purposes, 7 described TE strategies for cardiovascular aims, and 8 for dermal applications. However, only two clinical studies reported on three-dimensional (3D) and functional long-lasting TE constructs. The concept of generating 3D TE constructs and organs based on autologous molecules and cells is intriguing and promising. The first translational tissue-engineered products and techniques have been clinically implemented. However, despite the 30 years of research and development in this field, TE is still in its clinical infancy. Multiple experimental, ethical, budgetary, and regulatory difficulties hinder its rapid translation. Nevertheless, the first clinical applications show great promise and indicate that the translation towards clinical medical implementation has finally started.
Collapse
Affiliation(s)
- Julie Lien Paternoster
- UZ Leuven Campus Gasthuisberg Hospital Pharmacy, 574134, Plastic Surgery , Herestraat 49, Leuven, Belgium, 3000;
| | - Jan Jeroen Vranckx
- Universitaire Ziekenhuizen Leuven, 60182, Plastic and Reconstructive Surgery, Leuven, Belgium;
| |
Collapse
|
7
|
Martinelli RLDC, Marchesan IQ, Berretin-Felix G. Posterior lingual frenulum in infants: occurrence and maneuver for visual inspection. REVISTA CEFAC 2018. [DOI: 10.1590/1982-0216201820410918] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT Purpose: to verify the occurrence of posterior or submucosal lingual frenulum and evaluate the efficiency of a special maneuver for its visual inspection. Methods: an experimental study including 1,715 healthy infants, in which prematurity, perinatal complications, craniofacial anomalies neurological disorders, and visible genetic syndromes were the exclusion criteria. A clinical examination was performed by means of a maneuver that consisted in rising the lateral margins of the tongue to visualize the anatomical characteristics of the lingual frenulum. In some of the infants, a special maneuver was performed to assist visualization of posterior lingual frenulum, since its visualization was not possible. The maneuver consisted in two simultaneous actions: elevating and pushing the tongue back. Results: 558 infants (32.54%), out of the 1,715 had posterior frenulum, which required the special maneuver that consisted in both elevating and pushing the tongue back, simultaneously. Conclusion: the occurrence of posterior lingual frenulum was high and the special maneuver consisted in elevating and pushing the tongue back proved to be efficient to visualize the posterior lingual frenulum.
Collapse
|
8
|
Rodil A, Laca A, Paredes B, Rendueles M, Meana Á, Díaz M. Gels prepared from egg yolk and its fractions for tissue engineering. Biotechnol Prog 2016; 32:1577-1583. [PMID: 27602804 DOI: 10.1002/btpr.2364] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 06/30/2016] [Indexed: 11/09/2022]
Abstract
New biomaterials prepared from egg yolk and its main fractions (plasma and granules) have been developed for use in tissue engineering. Protein gels obtained via transglutaminase cross-linking were characterized by rheometry, texturometry and scanning electron microscopy. All the gels exhibited suitable physical and mechanical characteristics for use as potential biomaterials in skin regeneration. Specifically, results showed that these materials presented a compact, uniform structure, with granular gel being found to be the most resistant as well as the most elastic material. Accordingly, these gels were subsequently evaluated as scaffolds for murine fibroblast growth. The best results were obtained with granule gels. Not only adhesion and cell growth were detected when using these gels, but also continuous coatings of cells growing on their surface. These findings can be attributed to the higher protein content of this fraction and to the particular structure of its proteins. Thus, granules have proved to be an interesting potential raw material for scaffold development. © 2016 American Institute of Chemical Engineers Biotechnol. Prog., 32:1577-1583, 2016.
Collapse
Affiliation(s)
- Andrea Rodil
- Dept. of Chemical Engineering and Environmental Technology, University of Oviedo, C/Julián Clavería s/n, Oviedo, 33071, Spain
| | - Amanda Laca
- Dept. of Chemical Engineering and Environmental Technology, University of Oviedo, C/Julián Clavería s/n, Oviedo, 33071, Spain
| | - Benjamín Paredes
- Dept. of Chemical Engineering and Environmental Technology, University of Oviedo, C/Julián Clavería s/n, Oviedo, 33071, Spain
| | - Manuel Rendueles
- Dept. of Chemical Engineering and Environmental Technology, University of Oviedo, C/Julián Clavería s/n, Oviedo, 33071, Spain
| | - Álvaro Meana
- Community Center of Blood and Tissues of the Princedom of Asturias, C/Emilio Rodriguez Vigil s/n, Oviedo, 33006, Spain
| | - Mario Díaz
- Dept. of Chemical Engineering and Environmental Technology, University of Oviedo, C/Julián Clavería s/n, Oviedo, 33071, Spain
| |
Collapse
|
9
|
Almela T, Brook IM, Moharamzadeh K. Development of three-dimensional tissue engineered bone-oral mucosal composite models. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:65. [PMID: 26883949 PMCID: PMC4756037 DOI: 10.1007/s10856-016-5676-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 01/12/2016] [Indexed: 06/05/2023]
Abstract
Tissue engineering of bone and oral mucosa have been extensively studied independently. The aim of this study was to develop and investigate a novel combination of bone and oral mucosa in a single 3D in vitro composite tissue mimicking the natural structure of alveolar bone with an overlying oral mucosa. Rat osteosarcoma (ROS) cells were seeded into a hydroxyapatite/tri-calcium phosphate scaffold and bone constructs were cultured in a spinner bioreactor for 3 months. An engineered oral mucosa was fabricated by air/liquid interface culture of immortalized OKF6/TERET-2 oral keratinocytes on collagen gel-embedded fibroblasts. EOM was incorporated into the engineered bone using a tissue adhesive and further cultured prior to qualitative and quantitative assessments. Presto Blue assay revealed that ROS cells remained vital throughout the experiment. The histological and scanning electron microscope examinations showed that the cells proliferated and densely populated the scaffold construct. Micro computed tomography (micro-CT) scanning revealed an increase in closed porosity and a decrease in open and total porosity at the end of the culture period. Histological examination of bone-oral mucosa model showed a relatively differentiated parakeratinized epithelium, evenly distributed fibroblasts in the connective tissue layer and widely spread ROS cells within the bone scaffold. The feasibility of fabricating a novel bone-oral mucosa model using cell lines is demonstrated. Generating human 'normal' cell-based models with further characterization is required to optimize the model for in vitro and in vivo applications.
Collapse
Affiliation(s)
- Thafar Almela
- School of Clinical Dentistry, University of Sheffield, Claremont Crescent, Sheffield, S10 2TA, UK
| | - Ian M Brook
- School of Clinical Dentistry, University of Sheffield, Claremont Crescent, Sheffield, S10 2TA, UK
| | - Keyvan Moharamzadeh
- School of Clinical Dentistry, University of Sheffield, Claremont Crescent, Sheffield, S10 2TA, UK.
| |
Collapse
|
10
|
Liceras-Liceras E, Garzón I, España-López A, Oliveira ACX, García-Gómez M, Martín-Piedra MÁ, Roda O, Alba-Tercedor J, Alaminos M, Fernández-Valadés R. Generation of a bioengineered autologous bone substitute for palate repair: an in vivo study in laboratory animals. J Tissue Eng Regen Med 2015; 11:1907-1914. [PMID: 26449518 DOI: 10.1002/term.2088] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 06/10/2015] [Accepted: 09/04/2015] [Indexed: 11/06/2022]
Abstract
We carried out an in vivo study to evaluate the potential usefulness of a novel bioengineered bone substitute for the repair of palate defects in laboratory rabbits, using tissue-engineering methods. Our results showed that the use of a bioengineered bone substitute was associated with more symmetrical palate growth as compared to the controls, and the length and height of the palate were very similar on both sides of the palate, with differences from negative controls 4 months after artificial bone grafting for bone length. The histological analysis revealed that the regenerated bone was well organized and expressed osteocalcin. In contrast, bone corresponding to control animals without tissue grafting was immature, with areas of osteoid tissue and remodelling, as determined by MMP-14 expression. These results suggest that bone substitutes may be a useful strategy to induce the formation of a well-structured palate bone, which could prevent the growth alterations found in cleft palate patients. This opens a door to a future clinical application of these bone substitutes. Copyright © 2015 John Wiley & Sons, Ltd.
Collapse
Affiliation(s)
- Esther Liceras-Liceras
- Division of Paediatric Surgery, University Hospital Virgen de las Nieves, Granada, Spain.,PhD programme in Biomedicine, University of Granada, Spain
| | - Ingrid Garzón
- Tissue Engineering Group, Department of Histology, University of Granada and Instituto de Investigación Biosanitaria ibs.Granada, Spain
| | - Antonio España-López
- Craniofacial Malformations and Cleft Lip and Palate Management Unit, University Hospital Virgen de las Nieves, Granada, Spain
| | - Ana-Celeste-Ximenes Oliveira
- Tissue Engineering Group, Department of Histology, University of Granada and Instituto de Investigación Biosanitaria ibs.Granada, Spain
| | - Miriam García-Gómez
- Division of Paediatric Surgery, University Hospital Virgen de las Nieves, Granada, Spain
| | - Miguel-Ángel Martín-Piedra
- Tissue Engineering Group, Department of Histology, University of Granada and Instituto de Investigación Biosanitaria ibs.Granada, Spain
| | - Olga Roda
- Department of Human Anatomy and Embryology, University of Granada, Spain
| | | | - Miguel Alaminos
- Tissue Engineering Group, Department of Histology, University of Granada and Instituto de Investigación Biosanitaria ibs.Granada, Spain
| | - Ricardo Fernández-Valadés
- Division of Paediatric Surgery, University Hospital Virgen de las Nieves, Granada, Spain.,Tissue Engineering Group, Department of Histology, University of Granada and Instituto de Investigación Biosanitaria ibs.Granada, Spain.,Craniofacial Malformations and Cleft Lip and Palate Management Unit, University Hospital Virgen de las Nieves, Granada, Spain
| |
Collapse
|
11
|
Viñuela-Prieto JM, Sánchez-Quevedo MC, Alfonso-Rodríguez CA, Oliveira AC, Scionti G, Martín-Piedra MA, Moreu G, Campos A, Alaminos M, Garzón I. Sequential keratinocytic differentiation and maturation in a three-dimensional model of human artificial oral mucosa. J Periodontal Res 2014; 50:658-65. [PMID: 25470318 DOI: 10.1111/jre.12247] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/21/2014] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND OBJECTIVE Oral mucosa shortage may limit or condition some clinical approaches in maxillofacial, periodontal and implant treatment. The availability of a human oral mucosa model generated by tissue engineering could help clinicians to address the lack of oral mucosa. In this work, we carried out a sequential maturation and differentiation study of the epithelial cell layer of an artificial human oral mucosa substitute based on fibrin-agarose biomaterials with fibroblasts and keratinocytes. MATERIAL AND METHODS Histological, immunohistochemical and gene expression analyses were carried out in artificial human oral mucosa models developed and cultured for 1, 2 and 3 wk. RESULTS Artificial oral mucosa models showed expression of tight junction proteins and cytokeratins from the first week of in vitro development. Mature samples of 3 wk of development subjected to air-liquid conditions showed signs of epithelial differentiation and expressed specific RNAs and proteins corresponding to adherent and gap junctions and basement lamina. Moreover, these mature samples overexpressed some desmosomal and tight junction transcripts, with gap junction components being downregulated. CONCLUSION These results suggest that bioengineered human oral mucosa substitutes form a well-developed epithelial layer that was very similar to human native tissues. In consequence, the epithelial layer could be fully functional in these oral mucosa substitutes, thus implying that these tissues may have clinical usefulness.
Collapse
Affiliation(s)
- J M Viñuela-Prieto
- Department of Histology (Tissue Engineering Group), Faculty of Medicine, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria ibs, Granada, Spain.,PhD Programme in Biomedicine, University of Granada, Granada, Spain
| | - M C Sánchez-Quevedo
- Department of Histology (Tissue Engineering Group), Faculty of Medicine, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria ibs, Granada, Spain
| | - C A Alfonso-Rodríguez
- Department of Histology (Tissue Engineering Group), Faculty of Medicine, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria ibs, Granada, Spain
| | - A C Oliveira
- Department of Histology (Tissue Engineering Group), Faculty of Medicine, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria ibs, Granada, Spain
| | - G Scionti
- Department of Histology (Tissue Engineering Group), Faculty of Medicine, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria ibs, Granada, Spain
| | - M A Martín-Piedra
- Department of Histology (Tissue Engineering Group), Faculty of Medicine, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria ibs, Granada, Spain
| | - G Moreu
- Department of Stomatology, Faculty of Dentistry, University of Granada, Granada, Spain
| | - A Campos
- Department of Histology (Tissue Engineering Group), Faculty of Medicine, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria ibs, Granada, Spain
| | - M Alaminos
- Department of Histology (Tissue Engineering Group), Faculty of Medicine, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria ibs, Granada, Spain
| | - I Garzón
- Department of Histology (Tissue Engineering Group), Faculty of Medicine, University of Granada, Granada, Spain.,Instituto de Investigación Biosanitaria ibs, Granada, Spain
| |
Collapse
|
12
|
Sieira Gil R, Pagés CM, Díez EG, Llames S, Fuertes AF, Vilagran JL. Tissue-engineered oral mucosa grafts for intraoral lining reconstruction of the maxilla and mandible with a fibula flap. J Oral Maxillofac Surg 2014; 73:195.e1-16. [PMID: 25511969 DOI: 10.1016/j.joms.2014.09.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 08/29/2014] [Accepted: 09/02/2014] [Indexed: 11/16/2022]
Abstract
PURPOSE Many types of soft tissue grafts have been used for grafting or prelaminating bone flaps for intraoral lining reconstruction. The best results are achieved when prelaminating free flaps with mucosal grafts. We suggest a new approach to obtain keratinized mucosa over a fibula flap using full-thickness, engineered, autologous oral mucosa. PATIENTS AND METHODS We report on a pilot study for grafting fibula flaps for mandibular and maxilla reconstruction with full-thickness tissue-engineered autologous oral mucosa. We describe 2 different techniques: prelaminating the fibula flap and second-stage grafting of the fibula after mandibular reconstruction. Preparation of the full-thickness tissue-engineered oral mucosa is also described. RESULTS The clinical outcome of the tissue-engineered intraoral lining reconstruction and response after implant placement are reported. A peri-implant granulation tissue response was not observed when prelaminating the fibula, and little response was observed when intraoral grafting was performed. CONCLUSION Tissue engineering represents an alternative method by which to obtain sufficient autologous tissue for reconstructing mucosal oral defects. The full-thickness engineered autologous oral mucosa offers definite advantages in terms of reconstruction planning, donor site morbidity, and quality of the intraoral soft tissue reconstruction, thereby restoring native tissue and avoiding peri-implant tissue complications.
Collapse
Affiliation(s)
- Ramón Sieira Gil
- Staff Surgeon, Oral and Maxillofacial Surgery Unit, Department of Plastic and Maxillofacial Surgery, University Hospital Clínic, Barcelona University, Barcelona, Spain.
| | - Carles Martí Pagés
- Staff Surgeon, Oral and Maxillofacial Surgery Unit, Department of Plastic and Maxillofacial Surgery, University Hospital Clínic, Barcelona University, Barcelona, Spain
| | - Eloy García Díez
- Staff surgeon, Oral and Maxillofacial Surgery Unit, Department of Pediatric Surgery, University Hospital Sant Joan de Déu, Barcelona University, Esplugues de Llobregat, Barcelona, Spain
| | - Sara Llames
- Attending physician, El Centro de Investigación Biomédica en Red de Enfermedades Raras U714, Unidad de Cultivos Celulares e Ingeniería Tisular, Centro Comunitario de Sangre y Tejidos del Principado de Asturias, Oviedo, Spain
| | - Ada Ferrer Fuertes
- Staff Surgeon, Oral and Maxillofacial Surgery Unit, Department of Plastic and Maxillofacial Surgery, University Hospital Clínic, Barcelona University, Barcelona, Spain
| | - Jesús Lopez Vilagran
- Attending dentist, Clinica Vilagran, Private Dental Practice, Badalona, Barcelona, Spain
| |
Collapse
|