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Sueyoshi Y, Niwa A, Itani Y, Yamauchi M, Asamura S, Teramura T, Isogai N. Surface modification of the cubic micro-cartilage by collagenase treatment and its efficacy in cartilage regeneration for ear tissue engineering. Int J Pediatr Otorhinolaryngol 2022; 153:111037. [PMID: 34998203 DOI: 10.1016/j.ijporl.2021.111037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 12/31/2021] [Indexed: 12/30/2022]
Abstract
BACKGROUND In order to enhance cartilage regeneration, surface modification of the cubic micro-cartilage with the collagenase treatment was tested and its efficacy to tissue engineer ear cartilage was investigated. MATERIALS AND METHODS Harvested cubic micro-cartilages were treated with collagenase with different digestion time (0, 15, 60, and 120 min). Histological, ultrastructural (SEM and TEM), and Western blot analyses were carried out. Subsequently, A total of 45 dogs were used to tissue engineer ear cartilage. Using collagenase-treated micro-cartilage, the ear cartilage regeneration with the prepared dilution (8, 12.5, 25, 50, 100%) of micro-cartilage block seeding was performed to determine the minimum amount of cartilage tissue required for ear tissue-engineering (n = 6 at each point in each group). At 10 weeks after surgery, samples were resected and subjected to histochemical and immune-histological evaluation for cartilage regeneration. RESULTS In vitro study on micro-cartilage morphology and western blot analysis showed that collagenase digestion was optimal at 60 min for cartilage regeneration. In vivo evaluation on the reduced proportions of micro-cartilage block seeding onto implant scaffolds under 60-min collagenase digestion determined the minimum amount of cartilage tissue necessary to initiate a one-step ear cartilage regeneration in a canine autologous model, which was 12.5-25% of the original ear size. CONCLUSION Tissue-engineering ear cartilage from limited volume of donor cartilage can possibly be achieved by the collagenase treatment on micro-cartilage to expand cartilage regeneration capacity, application of cytokine sustained-release system, and seeding on a suitable ear scaffold material.
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Affiliation(s)
- Yu Sueyoshi
- Department of Plastic and Reconstructive Surgery, Kindai University Faculty of Medicine, Osaka-sayama, Osaka, 5898511, Japan
| | - Atsuko Niwa
- Department of Plastic and Reconstructive Surgery, Kindai University Faculty of Medicine, Osaka-sayama, Osaka, 5898511, Japan
| | - Yoshihito Itani
- Department of Plastic and Reconstructive Surgery, Kindai University Faculty of Medicine, Osaka-sayama, Osaka, 5898511, Japan
| | - Makoto Yamauchi
- Department of Plastic and Reconstructive Surgery, Kindai University Faculty of Medicine, Osaka-sayama, Osaka, 5898511, Japan
| | - Shinichi Asamura
- Department of Plastic Reconstructive Surgery, Wakayama Medical School, Wakayama, 6418509, Japan
| | - Takeshi Teramura
- Institute of Advanced Clinical Medicine, Kindai University Faculty of Medicine, Osaka, 5898511, Japan
| | - Noritaka Isogai
- Department of Plastic and Reconstructive Surgery, Kindai University Faculty of Medicine, Osaka-sayama, Osaka, 5898511, Japan.
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Al-Himdani S, Jessop ZM, Al-Sabah A, Combellack E, Ibrahim A, Doak SH, Hart AM, Archer CW, Thornton CA, Whitaker IS. Tissue-Engineered Solutions in Plastic and Reconstructive Surgery: Principles and Practice. Front Surg 2017; 4:4. [PMID: 28280722 PMCID: PMC5322281 DOI: 10.3389/fsurg.2017.00004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 01/18/2017] [Indexed: 01/05/2023] Open
Abstract
Recent advances in microsurgery, imaging, and transplantation have led to significant refinements in autologous reconstructive options; however, the morbidity of donor sites remains. This would be eliminated by successful clinical translation of tissue-engineered solutions into surgical practice. Plastic surgeons are uniquely placed to be intrinsically involved in the research and development of laboratory engineered tissues and their subsequent use. In this article, we present an overview of the field of tissue engineering, with the practicing plastic surgeon in mind. The Medical Research Council states that regenerative medicine and tissue engineering “holds the promise of revolutionizing patient care in the twenty-first century.” The UK government highlighted regenerative medicine as one of the key eight great technologies in their industrial strategy worthy of significant investment. The long-term aim of successful biomanufacture to repair composite defects depends on interdisciplinary collaboration between cell biologists, material scientists, engineers, and associated medical specialties; however currently, there is a current lack of coordination in the field as a whole. Barriers to translation are deep rooted at the basic science level, manifested by a lack of consensus on the ideal cell source, scaffold, molecular cues, and environment and manufacturing strategy. There is also insufficient understanding of the long-term safety and durability of tissue-engineered constructs. This review aims to highlight that individualized approaches to the field are not adequate, and research collaboratives will be essential to bring together differing areas of expertise to expedite future clinical translation. The use of tissue engineering in reconstructive surgery would result in a paradigm shift but it is important to maintain realistic expectations. It is generally accepted that it takes 20–30 years from the start of basic science research to clinical utility, demonstrated by contemporary treatments such as bone marrow transplantation. Although great advances have been made in the tissue engineering field, we highlight the barriers that need to be overcome before we see the routine use of tissue-engineered solutions.
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Affiliation(s)
- Sarah Al-Himdani
- Reconstructive Surgery and Regenerative Medicine Research Group (ReconRegen), Institute of Life Science, Swansea University Medical School, Swansea, UK; The Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK
| | - Zita M Jessop
- Reconstructive Surgery and Regenerative Medicine Research Group (ReconRegen), Institute of Life Science, Swansea University Medical School, Swansea, UK; The Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK
| | - Ayesha Al-Sabah
- Reconstructive Surgery and Regenerative Medicine Research Group (ReconRegen), Institute of Life Science, Swansea University Medical School , Swansea , UK
| | - Emman Combellack
- Reconstructive Surgery and Regenerative Medicine Research Group (ReconRegen), Institute of Life Science, Swansea University Medical School, Swansea, UK; The Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK
| | - Amel Ibrahim
- Reconstructive Surgery and Regenerative Medicine Research Group (ReconRegen), Institute of Life Science, Swansea University Medical School, Swansea, UK; The Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK; Institute of Child Health, University College London, London, UK
| | - Shareen H Doak
- Reconstructive Surgery and Regenerative Medicine Research Group (ReconRegen), Institute of Life Science, Swansea University Medical School, Swansea, UK; In Vitro Toxicology Group, Institute of Life Science, Swansea University Medical School, Swansea, UK
| | - Andrew M Hart
- Canniesburn Plastic Surgery Unit, Centre for Cell Engineering, University of Glasgow , Glasgow , UK
| | - Charles W Archer
- Reconstructive Surgery and Regenerative Medicine Research Group (ReconRegen), Institute of Life Science, Swansea University Medical School, Swansea, UK; Cartilage Biology Research Group, Institute of Life Science, Swansea University Medical School, Swansea, UK
| | - Catherine A Thornton
- Reconstructive Surgery and Regenerative Medicine Research Group (ReconRegen), Institute of Life Science, Swansea University Medical School, Swansea, UK; Human Immunology Group, Institute of Life Science, Swansea University Medical School, Swansea, UK
| | - Iain S Whitaker
- Reconstructive Surgery and Regenerative Medicine Research Group (ReconRegen), Institute of Life Science, Swansea University Medical School, Swansea, UK; The Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, UK
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Jessop ZM, Javed M, Otto IA, Combellack EJ, Morgan S, Breugem CC, Archer CW, Khan IM, Lineaweaver WC, Kon M, Malda J, Whitaker IS. Combining regenerative medicine strategies to provide durable reconstructive options: auricular cartilage tissue engineering. Stem Cell Res Ther 2016; 7:19. [PMID: 26822227 PMCID: PMC4730656 DOI: 10.1186/s13287-015-0273-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Recent advances in regenerative medicine place us in a unique position to improve the quality of engineered tissue. We use auricular cartilage as an exemplar to illustrate how the use of tissue-specific adult stem cells, assembly through additive manufacturing and improved understanding of postnatal tissue maturation will allow us to more accurately replicate native tissue anisotropy. This review highlights the limitations of autologous auricular reconstruction, including donor site morbidity, technical considerations and long-term complications. Current tissue-engineered auricular constructs implanted into immune-competent animal models have been observed to undergo inflammation, fibrosis, foreign body reaction, calcification and degradation. Combining biomimetic regenerative medicine strategies will allow us to improve tissue-engineered auricular cartilage with respect to biochemical composition and functionality, as well as microstructural organization and overall shape. Creating functional and durable tissue has the potential to shift the paradigm in reconstructive surgery by obviating the need for donor sites.
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Affiliation(s)
- Zita M Jessop
- Reconstructive Surgery & Regenerative Medicine Research Group, Swansea University Medical School, Room 509, ILS2, Swansea, SA2 8SS, UK.
- The Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, SA6 6NL, UK.
| | - Muhammad Javed
- Reconstructive Surgery & Regenerative Medicine Research Group, Swansea University Medical School, Room 509, ILS2, Swansea, SA2 8SS, UK.
- The Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, SA6 6NL, UK.
| | - Iris A Otto
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, 3584 CX, The Netherlands.
- Department of Plastic and Reconstructive Surgery, University Medical Center Utrecht, Utrecht, The Netherlands.
| | - Emman J Combellack
- Reconstructive Surgery & Regenerative Medicine Research Group, Swansea University Medical School, Room 509, ILS2, Swansea, SA2 8SS, UK.
- The Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, SA6 6NL, UK.
| | - Siân Morgan
- Reconstructive Surgery & Regenerative Medicine Research Group, Swansea University Medical School, Room 509, ILS2, Swansea, SA2 8SS, UK.
- The Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, SA6 6NL, UK.
| | - Corstiaan C Breugem
- Department of Plastic and Reconstructive Surgery, University Medical Center Utrecht, Utrecht, The Netherlands.
| | - Charles W Archer
- Reconstructive Surgery & Regenerative Medicine Research Group, Swansea University Medical School, Room 509, ILS2, Swansea, SA2 8SS, UK.
| | - Ilyas M Khan
- KhanLab, Swansea University, ILS2, Swansea, SA2 8SS, UK.
| | - William C Lineaweaver
- Division of Plastic Surgery, University of Mississippi Medical Center, Jackson, Mississippi, 39216, USA.
| | - Moshe Kon
- Department of Plastic and Reconstructive Surgery, University Medical Center Utrecht, Utrecht, The Netherlands.
| | - Jos Malda
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, 3584 CX, The Netherlands.
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Domplein 29, 3512 JE, Utrecht, The Netherlands.
| | - Iain S Whitaker
- Reconstructive Surgery & Regenerative Medicine Research Group, Swansea University Medical School, Room 509, ILS2, Swansea, SA2 8SS, UK.
- The Welsh Centre for Burns and Plastic Surgery, Morriston Hospital, Swansea, SA6 6NL, UK.
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Abstract
Metabolic stimuli, pressure, and fluid shear stress (FSS) are major mediators of vascular plasticity. The exposure of the vessel wall to increased laminar FSS is the main trigger of arteriogenesis, the remodelling of pre-existent arterio-arteriolar anastomoses to functional conductance arteries. In this study, we have used an in vitro bioreactor to investigate cell-specific interactions, molecular mechanisms as well as time-dependent effects under laminar FSS conditions. This bioreactor termed “artificial artery” can be used for screening potential arterio-protective substances, pro-arteriogenic factors, and for investigating biomarkers of cardiovascular diseases such as cardiac diseases. The bioreactor is built up out of 14 hollow fiber membranes colonized with endothelial cells (HUVECs) on the inside and smooth muscle cells (HUASMCs) on the outside. By means of Hoechst 33342 staining as well as immunocytochemistry of ß-catenin and α-smooth-muscle-actin, a microporous polypropylene membrane was characterized as being the appropriate polymer for co-colonization. Defined arterial flow conditions (0.1 N/m2 and 3 N/m2), metabolic exchange, and cross-talk of HUVECs and HUASMCs through hollow fibers mimic physiological in vivo conditions of the vasculature. Analysing mono- and co-culture secretomes by MALDI-TOF-TOF mass spectrometry, we could show that HUVECs secreted Up4A upon 3 N/m2. A constant cellular secretion of randomly chosen peptides verified viability of the “artificial artery” for a cultivation period up to five days. qRT-PCR analyses revealed an up-regulation of KLF2 and TIMP1 as mechano-regulated genes and demonstrated arterio-protective, homeostatic FSS conditions by a down-regulation of EDN1. Expression analyses of VWF and EDN1 furthermore confirmed that RNA of both cell types could separately be isolated without cross-contamination. CCND1 mRNA expression in HUVECs did not change upon FSS indicating a quiescent endothelial phenotype. Taken together, the “artificial artery” provides a solid in vitro model to test pharmacological active compounds for their impact on arterio-damaging or arterio-protective properties on vascular response.
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Park PIP, Makoid M, Jonnalagadda S. The design of flexible ciprofloxacin-loaded PLGA implants using a reversed phase separation/coacervation method. Eur J Pharm Biopharm 2011; 77:233-9. [DOI: 10.1016/j.ejpb.2010.11.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2010] [Revised: 10/18/2010] [Accepted: 11/22/2010] [Indexed: 02/04/2023]
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Ahmed TAE, Dare EV, Hincke M. Fibrin: a versatile scaffold for tissue engineering applications. TISSUE ENGINEERING PART B-REVIEWS 2009; 14:199-215. [PMID: 18544016 DOI: 10.1089/ten.teb.2007.0435] [Citation(s) in RCA: 593] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Tissue engineering combines cell and molecular biology with materials and mechanical engineering to replace damaged or diseased organs and tissues. Fibrin is a critical blood component responsible for hemostasis, which has been used extensively as a biopolymer scaffold in tissue engineering. In this review we summarize the latest developments in organ and tissue regeneration using fibrin as the scaffold material. Commercially available fibrinogen and thrombin are combined to form a fibrin hydrogel. The incorporation of bioactive peptides and growth factors via a heparin-binding delivery system improves the functionality of fibrin as a scaffold. New technologies such as inkjet printing and magnetically influenced self-assembly can alter the geometry of the fibrin structure into appropriate and predictable forms. Fibrin can be prepared from autologous plasma, and is available as glue or as engineered microbeads. Fibrin alone or in combination with other materials has been used as a biological scaffold for stem or primary cells to regenerate adipose tissue, bone, cardiac tissue, cartilage, liver, nervous tissue, ocular tissue, skin, tendons, and ligaments. Thus, fibrin is a versatile biopolymer, which shows a great potential in tissue regeneration and wound healing.
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Affiliation(s)
- Tamer A E Ahmed
- Department of Cellular and Molecular Medicine, University of Ottawa, Ontario, Canada
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Williams GM, Gratz KR, Sah RL. Asymmetrical strain distributions and neutral axis location of cartilage in flexure. J Biomech 2008; 42:325-30. [PMID: 19117571 DOI: 10.1016/j.jbiomech.2008.11.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2008] [Revised: 11/12/2008] [Accepted: 11/13/2008] [Indexed: 11/16/2022]
Abstract
Flexural deformation has been used for the biomechanical characterization of native and engineered cartilage and as a mechanical stimulus to induce alteration of cartilage shape during in vitro culture. Flexure is also a physiologically relevant mode of deformation for various cartilaginous structures such as the ears and nose, but a kinematic description of cartilage in flexure is lacking even for simple deformations. The hypothesis of this study was that tension-compression (T-C) nonlinearity of cartilage will result in asymmetrical strain distributions during bending, while a material with similar behavior in tension and compression, such as alginate, will have a more symmetrical distribution of strains. Strips of calf articular cartilage and alginate were tested under uniform circular bending, and strains were determined by a micromechanical analysis of images acquired by epifluorescence microscopy. This experimental analysis was interpreted in the context of a model of small-deflection, pure bending of thin, homogeneous beams of a bimodular elastic material. The results supported the hypothesis and showed that marked asymmetry existed in cartilage flexural strains where the location of the neutral axis was significantly different than the midline and closer to the tensile surface. In contrast, alginate samples had a centrally located neutral axis. These experimental results were supported by the model indicating that the bimodular simplification of cartilage properties is a useful first approximation of T-C nonlinearity in these tests. The neutral axis location in cartilage samples was not influenced by the testing orientation (towards or away from the superficial-most tissue) or magnitude of flexure. These findings characterize the kinematics of cartilage at equilibrium during simple bending and indicate that T-C nonlinearity is an important determinant of the flexural strain distributions in the tested tissue.
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Affiliation(s)
- Gregory M Williams
- Department of Bioengineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0412, La Jolla, CA 92093, USA
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Eyrich D, Göpferich A, Blunk T. Fibrin in Tissue Engineering. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2007; 585:379-92. [PMID: 17120796 DOI: 10.1007/978-0-387-34133-0_24] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Daniela Eyrich
- Department of Pharmaceutical Technology, University of Regensburg, 93040 Regensburg, Germany
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