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Botelho T, Kawata BA, Móbille Awoyama S, Laurindo Igreja Marrafa PA, Carvalho HC, de Lima CJ, Barrinha Fernandes A. Sterilization of Human Amniotic Membrane Using an Ozone Hydrodynamic System. Ann Biomed Eng 2024; 52:1425-1434. [PMID: 38411861 DOI: 10.1007/s10439-024-03467-3] [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: 11/09/2023] [Accepted: 02/02/2024] [Indexed: 02/28/2024]
Abstract
Human amniotic membrane (hAM) is an important biomaterial for Tissue Engineering, due to its great regenerative properties and potential use as a scaffold. The most used procedure to sterilize biomaterials is gamma-irradiation, but this method can affect several properties, causing damage to the structure and reducing the growth factors. The present work evaluated the efficiency of a new method based on ozonated dynamic water for hAM sterilization. HAM fragments were experimentally contaminated with Staphylococcus aureus, Escherichia coli, Candida albicans, Staphylococcus epidermidis, and Clostridium sporogenes (106 CFU/mL) and submitted to sterilization process for 5, 10 and 15 min. The analyses did not reveal microbial activity after 10 min for S. aureus and C. sporogenes and after 15 min for E. coli and S. epidermidis. The microbial activity of C. albicans was reduced with the exposure time increase, but the evaluated time was insufficient for complete sterilization. The depyrogenation process was investigated for different ozonation times (15, 20, 25, 30, and 35 min) to evaluate the ozone sterilization potential and presented promising results after 35 min. The ozone effect on hAM structure was evaluated by histological analysis. A decrease in epithelium average thickness was observed with the exposure time increase. Furthermore, some damage in the epithelium was observed when hAM was exposed for 10 and 15 min. It can indicate that ozone, besides being effective in sterilization, could promote the hAM sample's de-epithelization, becoming a possible new method for removing the epithelial layer to use hAM as a scaffold.
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Affiliation(s)
- Túlia Botelho
- Center for Innovation, Technology and Education - CITÉ, Parque de Inovação Tecnológica de São José dos Campos, São José dos Campos, SP, 12247-016, Brazil
- Faculdade Santo Antônio - FSA, Caçapava, SP, Brazil
| | - Bianca Akemi Kawata
- Center for Innovation, Technology and Education - CITÉ, Parque de Inovação Tecnológica de São José dos Campos, São José dos Campos, SP, 12247-016, Brazil.
- Universidade Anhembi Morumbi - UAM, Biomedical Engineering Institute, São Paulo, SP, 04546-001, Brazil.
| | - Silvia Móbille Awoyama
- Center for Innovation, Technology and Education - CITÉ, Parque de Inovação Tecnológica de São José dos Campos, São José dos Campos, SP, 12247-016, Brazil
- Centro Universitário FUNVIC - UNIFUNVIC, College of Pharmacy, Pindamonhangaba, SP, 12412-825, Brazil
| | - Pedro Augusto Laurindo Igreja Marrafa
- Center for Innovation, Technology and Education - CITÉ, Parque de Inovação Tecnológica de São José dos Campos, São José dos Campos, SP, 12247-016, Brazil
- Universidade Anhembi Morumbi - UAM, Biomedical Engineering Institute, São Paulo, SP, 04546-001, Brazil
| | - Henrique Cunha Carvalho
- Center for Innovation, Technology and Education - CITÉ, Parque de Inovação Tecnológica de São José dos Campos, São José dos Campos, SP, 12247-016, Brazil
- Universidade Tecnológica Federal do Paraná - UTFPR, Campo Mourão, PR, 87301-899, Brazil
| | - Carlos José de Lima
- Center for Innovation, Technology and Education - CITÉ, Parque de Inovação Tecnológica de São José dos Campos, São José dos Campos, SP, 12247-016, Brazil
- Universidade Anhembi Morumbi - UAM, Biomedical Engineering Institute, São Paulo, SP, 04546-001, Brazil
| | - Adriana Barrinha Fernandes
- Center for Innovation, Technology and Education - CITÉ, Parque de Inovação Tecnológica de São José dos Campos, São José dos Campos, SP, 12247-016, Brazil
- Universidade Anhembi Morumbi - UAM, Biomedical Engineering Institute, São Paulo, SP, 04546-001, Brazil
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Fitriani N, Wilar G, Narsa AC, Mohammed AFA, Wathoni N. Application of Amniotic Membrane in Skin Regeneration. Pharmaceutics 2023; 15:pharmaceutics15030748. [PMID: 36986608 PMCID: PMC10053812 DOI: 10.3390/pharmaceutics15030748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 02/08/2023] [Accepted: 02/20/2023] [Indexed: 02/26/2023] Open
Abstract
Amniotic membrane (AM) is an avascular structure composed of three different layers, which contain collagen, extracellular matrix, and biologically active cells (stem cells). Collagen, a naturally occurring matrix polymer, provides the structural matrix/strength of the amniotic membrane. Tissue remodeling is regulated by growth factors, cytokines, chemokines, and other regulatory molecules produced by endogenous cells within AM. Therefore, AM is considered an attractive skin-regenerating agent. This review discusses the application of AM in skin regeneration, including its preparation for application to the skin and its mechanisms of therapeutic healing in the skin. This review involved collecting research articles that have been published in several databases, including Google Scholar, PubMed, Science Direct, and Scopus. The search was conducted by using the keywords ‘amniotic membrane skin’, ‘amniotic membrane wound healing’, ‘amniotic membrane burn’, ‘amniotic membrane urethral defects’, ‘amniotic membrane junctional epidermolysis bullosa’, and ‘amniotic membrane calciphylaxis’. Ultimately, 87 articles are discussed in this review. Overall, AM has various activities that help in the regeneration and repair of damaged skin.
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Affiliation(s)
- Nurul Fitriani
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Jatinangor 45363, Indonesia
- Pharmaceutical Research and Development Laboratory of FARMAKA TROPIS, Faculty of Pharmacy, Universitas Mulawarman, Samarinda 75119, Indonesia
| | - Gofarana Wilar
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Jatinangor 45363, Indonesia
| | - Angga Cipta Narsa
- Pharmaceutical Research and Development Laboratory of FARMAKA TROPIS, Faculty of Pharmacy, Universitas Mulawarman, Samarinda 75119, Indonesia
| | - Ahmed F. A. Mohammed
- Department of Pharmaceutics, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| | - Nasrul Wathoni
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Jatinangor 45363, Indonesia
- Correspondence: ; Tel.: +62-22-842-888-888
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Kafili G, Tamjid E, Niknejad H, Simchi A. Development of injectable hydrogels based on human amniotic membrane and polyethyleneglycol-modified nanosilicates for tissue engineering applications. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Daniele E, Ferrari B, Rassu N, Ben-Nun J, Bosio L, Barbaro V, Ferrari S, Ponzin D. Comparison of human amniotic membrane decellularisation approaches for hESC-derived RPE cells culture. BMJ Open Ophthalmol 2022; 7:bmjophth-2022-000981. [PMID: 36161850 PMCID: PMC9454075 DOI: 10.1136/bmjophth-2022-000981] [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: 01/20/2022] [Accepted: 08/24/2022] [Indexed: 11/12/2022] Open
Abstract
Objective Recent clinical studies have shown that the transplantation of functional retinal pigment epithelium (RPE) cells can prevent the onset of RPE degeneration in age-related macular degeneration. This study aimed to investigate the potential of human amniotic membrane (hAM) as a viable scaffold for the growth and proliferation of pluripotent-derived RPE cells. Methods and analysis Three enzymatic hAM de-epithelialisation methods (thermolysin, trypsin-EDTA and dispase II) were assessed by histological analysis and optical coherence tomography (OCT). We generated RPE cells from a human embryonic stem cell (hESC) line subjected to spontaneous differentiation in feeder-free conditions. The hESC-derived RPE cells were seeded over denuded hAM at a density of 2.0×105 cells/cm2 and maintained in culture for up to 4 weeks. Immnofluorescence was carried out to evaluate the development of a confluent monolayer of RPE cells on the top of the hAM. Conditioned medium was collected to measure pigment epithelium-derived factor (PEDF) concentration by ELISA. Results Laminin α5 and collagen IV staining confirmed the efficiency of the de-epithelialisation process. In particular, thermolysin showed good retention of tissue integrity on OCT images and greater preservation of the hAM basement membrane. The hESC-derived RPE cells formed patches of pigmented cells interspersed along the denuded hAM, but failed to form a regular sheet of RPE cells. These cells expressed typical RPE markers, such as PMEL17 and RPE65, but they secreted low levels of PEDF. Conclusion The biological variability of the hAM could influence the adhesion and the expansion of hESC-derived RPE cells. Further studies are required to verify whether a non-confluent monolayer might represent a limit to transplantation.
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Affiliation(s)
- Elena Daniele
- Department of Translational Medicine, University of Ferrara, Ferrara, Italy .,Venice Eye Bank, Venice, Italy
| | | | - Nicolò Rassu
- Ophthalmic Unit, Ospedale dell'Angelo, Venice, Italy
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Baldit A, Dubus M, Sergheraert J, Kerdjoudj H, Mauprivez C, Rahouadj R. Biomechanical tensile behavior of human Wharton's jelly. J Mech Behav Biomed Mater 2021; 126:104981. [PMID: 34915358 DOI: 10.1016/j.jmbbm.2021.104981] [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: 03/10/2021] [Revised: 11/02/2021] [Accepted: 11/12/2021] [Indexed: 02/08/2023]
Abstract
Wharton's jelly (WJ) is a mucous connective tissue of the umbilical cord. It shows high healing capabilities, mainly attributed to the chemical composition and to the presence of stem cells, growth factors and peptides. Although WJ biological properties are well documented in vitro and in vivo, there is still a lack of mechanical data on this tissue, which is paramount for its use as a biomaterial for medical applications. In this study, mechanical responses of ten WJ samples within close physiological conditions were registered undergoing quasi static cyclic tensile tests followed by a load up to failure. This protocol aimed on one hand to provide biomechanical data to feed predictive numerical models and on the other hand increase WJ knowledge in view of its potential use in biomedical field. In spite of the WJ harvest, the resulting viscous nonlinear elastic response obtained is fully in tune with the literature confirming the database quality. A side of the knowledge improvement on WJ mechanical response, this paper provides accurate data that will enhance predictive simulation work such as finite element analysis. The mechanical step-through brought by the analytical nonlinear characterization over cyclic and ultimate loads is to predict WJ behavior. Actually, principal component analysis highlighted its quality while pointing out indicators, such as failure or hydration criteria, as well as models' limitations.
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Affiliation(s)
- Adrien Baldit
- LEM3-UMR-7239, CNRS - Université de Lorraine - Arts et Métiers ParisTech, France; ENIM, Université de Lorraine, METZ, France.
| | - Marie Dubus
- Université de Reims Champagne Ardenne, Biomatériaux et Inflammation en Site Osseux (BIOS) EA 4691, 51100, Reims, France
| | - Johan Sergheraert
- Université de Reims Champagne Ardenne, Biomatériaux et Inflammation en Site Osseux (BIOS) EA 4691, 51100, Reims, France; Centre Hospitalier Universitaire de Reims, France
| | - Halima Kerdjoudj
- Université de Reims Champagne Ardenne, Biomatériaux et Inflammation en Site Osseux (BIOS) EA 4691, 51100, Reims, France
| | - Cedric Mauprivez
- Université de Reims Champagne Ardenne, Biomatériaux et Inflammation en Site Osseux (BIOS) EA 4691, 51100, Reims, France; Centre Hospitalier Universitaire de Reims, France
| | - Rachid Rahouadj
- LEM3-UMR-7239, CNRS - Université de Lorraine - Arts et Métiers ParisTech, France
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Wei C, Feng Y, Che D, Zhang J, Zhou X, Shi Y, Wang L. Biomaterials in skin tissue engineering. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1933977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Chao Wei
- Mechanical and Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, China
| | - Yihua Feng
- Mechanical and Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, China
| | - Dezhao Che
- Mechanical and Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, China
| | - Jiahui Zhang
- Mechanical and Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, China
| | - Xuan Zhou
- Mechanical and Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, China
| | - Yanbin Shi
- Mechanical and Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, China
| | - Li Wang
- Mechanical and Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, China
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Ahmad T, McGrath S, Sirafim C, do Amaral RJFC, Soong SL, Sitram R, Turkistani S, Santarella F, Kearney CJ. Development of wound healing scaffolds with precisely-triggered sequential release of therapeutic nanoparticles. Biomater Sci 2021; 9:4278-4288. [PMID: 33165491 DOI: 10.1039/d0bm01277g] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Natural bioactive cue profiles are generally transient with cues switching on/off to coordinate successful outcomes. Dysregulation of these sequences typically leads to disease. Successful wound healing, for example, should progress sequentially through hemostasis, inflammation, granulation tissue formation, and maturation. Chronic wounds, such as diabetic foot ulcers, suffer from uncoordinated signaling, and arrest and cycle between the inflammation and granulation stages. Traditionally, therapeutic delivery in tissue engineering has focused on sustaining delivery of key signaling factors; however, temporal and sequential delivery have increasingly come into focus. To fully take advantage of these signaling systems, a scaffold or matrix material that can house the delivery system is desirable. In this work, we functionalized a collagen-based scaffold - which has proven regenerative potential in wounds - with on-demand delivery of nanoparticles. Building on our previous work with ultrasound-responsive alginate that shows near-zero baseline release and a rapid release in response to an ultrasound trigger, we developed two novel scaffolds. In the first version, homogeneously-distributed microparticles of alginate were incorporated within the collagen-glycosaminoglycan (GAG) scaffold; ultrasound-triggered release of platelet derived growth factor (PDGF) loaded gold nanoparticles was demonstrated; and their maintained bioactivity confirmed. In the second version, pockets of alginate that can be individually loaded and triggered with ultrasound, were incorporated. The ability to sequentially release multiple therapeutics within these scaffolds using ultrasound was successfully confirmed. These platforms offer a precise and versatile way to deliver therapeutic nanoparticles within a proven regenerative template, and can be used to deliver and probe timed therapeutic delivery in wound healing and other tissue engineering applications.
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Affiliation(s)
- Tauseef Ahmad
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland
| | - Sean McGrath
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland
| | - Catherine Sirafim
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland
| | - Ronaldo J F C do Amaral
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland
| | - Shin-Loong Soong
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland
| | - Renuka Sitram
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland
| | - Shifa'a Turkistani
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland
| | - Francesco Santarella
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland
| | - Cathal J Kearney
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland and Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and Trinity College Dublin, Dublin, Ireland and Trinity Centre for Bioengineering, Trinity College Dublin, Dublin, Ireland and Department of Biomedical Engineering, University of Massachusetts, Amherst, USA.
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8
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Emara A, Shah R. Recent update on craniofacial tissue engineering. J Tissue Eng 2021; 12:20417314211003735. [PMID: 33959245 PMCID: PMC8060749 DOI: 10.1177/20417314211003735] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 02/26/2021] [Indexed: 12/13/2022] Open
Abstract
The craniofacial region consists of several different tissue types. These tissues are quite commonly affected by traumatic/pathologic tissue loss which has so far been traditionally treated by grafting procedures. With the complications and drawbacks of grafting procedures, the emerging field of regenerative medicine has proved potential. Tissue engineering advancements and the application in the craniofacial region is quickly gaining momentum although most research is still at early in vitro/in vivo stages. We aim to provide an overview on where research stands now in tissue engineering of craniofacial tissue; namely bone, cartilage muscle, skin, periodontal ligament, and mucosa. Abstracts and full-text English articles discussing techniques used for tissue engineering/regeneration of these tissue types were summarized in this article. The future perspectives and how current technological advancements and different material applications are enhancing tissue engineering procedures are also highlighted. Clinically, patients with craniofacial defects need hybrid reconstruction techniques to overcome the complexity of these defects. Cost-effectiveness and cost-efficiency are also required in such defects. The results of the studies covered in this review confirm the potential of craniofacial tissue engineering strategies as an alternative to avoid the problems of currently employed techniques. Furthermore, 3D printing advances may allow for fabrication of patient-specific tissue engineered constructs which should improve post-operative esthetic results of reconstruction. There are on the other hand still many challenges that clearly require further research in order to catch up with engineering of other parts of the human body.
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Affiliation(s)
- Aala’a Emara
- OMFS Department, Faculty of Dentistry,
Cairo University, Cairo, Egypt
- Division of Craniofacial and Surgical
Care, University of North Carolina (UNC) School of Dentistry, Chapel Hill, NC,
USA
| | - Rishma Shah
- Division of Craniofacial and Surgical
Care, University of North Carolina (UNC) School of Dentistry, Chapel Hill, NC,
USA
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Nejad AR, Hamidieh AA, Amirkhani MA, Sisakht MM. Update review on five top clinical applications of human amniotic membrane in regenerative medicine. Placenta 2020; 103:104-119. [PMID: 33120046 DOI: 10.1016/j.placenta.2020.10.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 10/18/2020] [Accepted: 10/21/2020] [Indexed: 12/11/2022]
Abstract
Due to the increasing number of studies performed in the field of regenerative medicine during the last two decades, more analytic studies are still needed to clarify the future prospect of this area of science. The main aim of this research was to review the clinical applications of human Amniotic membrane in the field of regenerative medicine critically. Furthermore, in the light of increasing numbers of available products derived from amniotic membrane, we aimed look in depth to see whether regenerative medicine research strategies have a place in the clinical setting. More specifically, in the present study, we attempted to provide insight on developing the new indication for more research and in the next step, for market leaders companies to expand cost-effectiveness of new derived AM products. 20 companies or distributers have offered some commercial products in this field. Survey on more than 90 clinical trials in last five years showed dermatology (and more specific wound healing), orthopedic, and ophthalmology are heavily biased toward multibillion dollar industry. Moreover, urology and dentistry with fewer numbers of clinical data in comparison with the above-mentioned areas, currently are in the path of translation (especially dentistry). In addition, otolaryngology and oncology with the lowest number showed more potential of research thorough understanding the properties that will help guiding the use of AM-derived products in these two areas in future. More than 50% of clinical studies were done or are developing in USA, which have the biggest share in market products. Subsequently, China, Egypt, India, Iran, and Germany with the ongoing clinical trials in different phases may have more approved products in near future.
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Affiliation(s)
- Aida Rezaei Nejad
- Stem Cell and Regenerative Medicine Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Ali Hamidieh
- Pediatric Cell Therapy Research Center, Tehran University of Medical Sciences, Tehran, Iran; Stem Cell and Regenerative Medicine Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Amir Amirkhani
- Stem Cell and Regenerative Medicine Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahsa Mollapour Sisakht
- Stem Cell and Regenerative Medicine Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran; Department of Biochemistry, Erasmus University Medical Center, Rotterdam, the Netherlands.
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Dikici S, Claeyssens F, MacNeil S. Bioengineering Vascular Networks to Study Angiogenesis and Vascularization of Physiologically Relevant Tissue Models in Vitro. ACS Biomater Sci Eng 2020; 6:3513-3528. [PMID: 32582840 PMCID: PMC7304666 DOI: 10.1021/acsbiomaterials.0c00191] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 04/29/2020] [Indexed: 12/11/2022]
Abstract
Angiogenesis assays are essential for studying aspects of neovascularization and angiogenesis and investigating drugs that stimulate or inhibit angiogenesis. To date, there are several in vitro and in vivo angiogenesis assays that are used for studying different aspects of angiogenesis. Although in vivo assays are the most representative of native angiogenesis, they raise ethical questions, require considerable technical skills, and are expensive. In vitro assays are inexpensive and easier to perform, but the majority of them are only two-dimensional cell monolayers which lack the physiological relevance of three-dimensional structures. Thus, it is important to look for alternative platforms to study angiogenesis under more physiologically relevant conditions in vitro. Accordingly, in this study, we developed polymeric vascular networks to be used to study angiogenesis and vascularization of a 3D human skin model in vitro. Our results showed that this platform allowed the study of more than one aspect of angiogenesis, endothelial migration and tube formation, in vitro when combined with Matrigel. We successfully reconstructed a human skin model, as a representative of a physiologically relevant and complex structure, and assessed the suitability of the developed in vitro platform for studying endothelialization of the tissue-engineered skin model.
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Affiliation(s)
- Serkan Dikici
- Department of Materials
Science
and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, United Kingdom
| | - Frederik Claeyssens
- Department of Materials
Science
and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, United Kingdom
| | - Sheila MacNeil
- Department of Materials
Science
and Engineering, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, United Kingdom
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Paggiaro AO, Mathor MB, Teodoro WR, Isaac C, Capelozzi VL, Gemperli R. Evaluation of Radiosterilized Glyercerolated Amniotic Membranes as a Substrate for Cultured Human Epithelial Cells. Organogenesis 2020; 16:27-41. [PMID: 32063078 DOI: 10.1080/15476278.2020.1723366] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Human amniotic membrane (HAM) is a biomaterial with biological properties beneficial to tissue repair, serving as a substrate for cell cultivation. Irradiation is used for tissue sterilization, but can damage the HAM structure. The objective of this paper was to construct a skin substitute, composed of human keratinocytes cultured on glycerolated HAMs, and to evaluate the influence radiation on subsequent cell culture growth. Four batches of HAMs were glycerolated, and half of them were radio-sterilzed with 25 kGy. Non-irradiated glycerolated HAM (ni-HAM) and irradiated glycerolated HAM (i-HAM) samples were then de-epithelized and analyzed using optical microscopy (Picrossirius staining), immunofluorescence and electron microscopy. Subsequently, keratinocytes were cultured on ni- and i-HAMs, and either immersed or positioned at the air-liquid interface. The basement membranes of the ni-HAM group remained intact following de-epithelialization, whereas the i-HAM group displayed no evidence or remnant presence of these membranes. Concerning the keratinocyte cultures, the ni-HAM substrate promoted the growth of multi-layered and differentiated epithelia. Keratinocytes cultured on i-HAM formed epithelium composed of three layers of stratification and discrete cell differentiation. The glycerolated HAM was compatible with cultured epithelia, demonstrating its potential as a skin substitute. Irradiation at 25 kGy caused structural damage to the amnion.
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Affiliation(s)
- André O Paggiaro
- Universidade de Guarulhos, Nursing Pós Graduation, Guarulhos, Brazil.,Universidade de São Paulo, Faculdade de Medicine, São Paulo, Brazil
| | - Monica B Mathor
- IPEN- Instituto de Pesquisa Energéticas e Nucleares, São Paulo, Brazil
| | - Walcy R Teodoro
- Universidade de São Paulo, Faculdade de Medicine, São Paulo, Brazil
| | - Cesár Isaac
- Universidade de São Paulo, Faculdade de Medicine, São Paulo, Brazil
| | - Vera L Capelozzi
- Universidade de São Paulo, Faculdade de Medicine, São Paulo, Brazil
| | - Rolf Gemperli
- Universidade de São Paulo, Faculdade de Medicine, São Paulo, Brazil
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Evaluation of Tissue-engineered Skin on Base of Human Amniotic Membrane for Wound Healing. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2020; 7:e2320. [PMID: 31942350 PMCID: PMC6952131 DOI: 10.1097/gox.0000000000002320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 04/30/2019] [Indexed: 12/19/2022]
Abstract
Human amniotic membranes (hAMs) have shown promising results in recent studies aimed at improving wound healing through several mechanisms. We wanted to investigate its properties as a scaffold by adding autologous cells to treat full-thickness skin defects and hypothesized that recultivated hAM would show an even improved wound healing by accelerating the epidermal closure of the wound.
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Shin SW, Jang YD, Ko KW, Kang EY, Han JH, Bedair TM, Kim IH, Son TI, Park W, Han DK. PCL microspheres containing magnesium hydroxide for dermal filler with enhanced physicochemical and biological performances. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.07.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Zhu T, Jiang J, Zhao J, Chen S, Yan X. Regulating Preparation Of Functional Alginate-Chitosan Three-Dimensional Scaffold For Skin Tissue Engineering. Int J Nanomedicine 2019; 14:8891-8903. [PMID: 32009786 PMCID: PMC6859126 DOI: 10.2147/ijn.s210329] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 10/21/2019] [Indexed: 12/14/2022] Open
Abstract
AIM In this study, we attempted to regulate the preparation of Alg-CS-Flu three-dimensional scaffolds via a facile freeze-drying method combined with amidation. MATERIALS AND METHODS Three-dimensional porous flurbiprofen-grafted alginate (Alg)-chitosan (CS) scaffolds were successfully prepared by a facile freeze-drying method combined with amidation for skin tissue engineering applications. Alg-CS composite was first used to load flurbiprofen (Flu), which is a kind of anti-inflammatory non-steroidal molecule. The Flu-loaded Alg/CS composite solution, through freeze-drying and 1-ethyl-3(3-(dimethylamino)propyl) carbodiimide/N-hydroxysuccinimide crosslinking to form an Alg-CS-Flu scaffold, exhibited a uniform and porous morphology that was characterized using scanning electron microscopy. The Alg-CS-Flu as-prepared scaffold was also characterized using Fourier-transform infrared spectroscopy, water contact angle, thermal properties, and stress-strain testing. RESULTS The results reveal that Flu was successfully grafted onto the surfaces of the Alg-CS-Flu scaffold, which showed good hydrophilicity and appropriate mechanical properties. Furthermore, cell viability, cell morphology from cells cultured in vitro, and hematoxylin-eosin staining after the graft was subcutaneously embedded in mice for 7 d demonstrated that the Alg-CS-Flu scaffold had no unfavorable effects on the adhesion and proliferation of fibroblasts, as well as a good anti-inflammatory property. CONCLUSION The developed Alg-CS-Flu scaffold is proposed as a promising material or skin tissue engineering application.
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Affiliation(s)
- Tonghe Zhu
- Department of Sports Medicine, Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai200233, People’s Republic of China
| | - Jia Jiang
- Department of Sports Medicine, Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai200233, People’s Republic of China
| | - Jinzhong Zhao
- Department of Sports Medicine, Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai200233, People’s Republic of China
| | - Sihao Chen
- Scientific Research Department of Shanghai University of Engineering Science, Shanghai201620, People’s Republic of China
- Multidisciplinary Center for Advanced Materials of Shanghai University of Engineering Science, Shanghai University of Engineering Science, Shanghai201620, People’s Republic of China
| | - Xiaoyu Yan
- Department of Sports Medicine, Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai200233, People’s Republic of China
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Butt H, Mehmood A, Ali M, Tasneem S, Tarar MN, Riazuddin S. Vitamin E preconditioning alleviates in vitro thermal stress in cultured human epidermal keratinocytes. Life Sci 2019; 239:116972. [PMID: 31654744 DOI: 10.1016/j.lfs.2019.116972] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 10/04/2019] [Accepted: 10/14/2019] [Indexed: 02/07/2023]
Abstract
AIMS Thermal burns are the most common type of skin injuries. Clinically, the deteriorating thermal wounds have been successfully treated with skin cell sheets, suspensions or bioengineered skin substitutes. After thermal injury, oxidative microenvironment prevalent in the burnt tissue due to imbalance between production of free radicals and antioxidants defense aiding to destruction of cellular or tissue components. However, depleted antioxidant content particularly vitamin E after heat injury challenges efficient regenerative and healing capacity of transplanted cells. Thus, aim of current study was to pretreat human epidermal keratinocytes with vitamin E in order to enhance their survival rate and therapeutic ability under oxidative microenvironment induced by in vitro heat stress. MAIN METHODS Keratinocytes were treated with 100 μM vitamin E at 37 °C for 24 h followed by thermal stress at 51 °C for 10 min. Cell viability and cytotoxicity assays, gene expression analysis and paracrine release analysis were performed. KEY FINDINGS Vitamin E preconditioning resulted in significantly improved cell morphology, enhanced viability and reduced lactate dehydrogenase release. Furthermore, Vitamin E preconditioned cells exposed to thermal stress showed significant down-regulated expression of BAX and up-regulated expression of PCNA, BCL-XL, vascular endothelial growth factor (VEGF), involucrin, transglutaminase 1 (TGM1) and filaggrin (FLG) escorted by increased paracrine release of VEGF, basic fibroblast growth factor (bFGF) and epidermal growth factor (EGF). SIGNIFICANCE Results of the current study suggest that clinical transplantation of vitamin E preconditioned keratinocytes alone or in combination with dermal fibroblasts in skin substitutes for the treatment of thermally injured skin.
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Affiliation(s)
- Hira Butt
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan
| | - Azra Mehmood
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan
| | - Muhammad Ali
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan
| | - Saba Tasneem
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan
| | - Moazzam N Tarar
- Jinnah Burn & Reconstructive Surgery Centre, Lahore, Pakistan
| | - Sheikh Riazuddin
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of the Punjab, Lahore, Pakistan; Jinnah Burn & Reconstructive Surgery Centre, Lahore, Pakistan.
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