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Sompunga P, Rodprasert W, Srisuwatanasagul S, Techangamsuwan S, Jirajessada S, Hanchaina R, Kangsamaksin T, Yodmuang S, Sawangmake C. Preparation of Decellularized Tissue as Dual Cell Carrier Systems: A Step Towards Facilitating Re-epithelization and Cell Encapsulation for Tracheal Reconstruction. Ann Biomed Eng 2024; 52:1222-1239. [PMID: 38353908 DOI: 10.1007/s10439-024-03448-6] [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: 08/21/2023] [Accepted: 01/09/2024] [Indexed: 04/06/2024]
Abstract
Surgical treatment of tracheal diseases, trauma, and congenital stenosis has shown success through tracheal reconstruction coupled with palliative care. However, challenges in surgical-based tracheal repairs have prompted the exploration of alternative approaches for tracheal replacement. Tissue-based treatments, involving the cultivation of patient cells on a network of extracellular matrix (ECM) from donor tissue, hold promise for restoring tracheal structure and function without eliciting an immune reaction. In this study, we utilized decellularized canine tracheas as tissue models to develop two types of cell carriers: a decellularized scaffold and a hydrogel. Our hypothesis posits that both carriers, containing essential biochemical niches provided by ECM components, facilitate cell attachment without inducing cytotoxicity. Canine tracheas underwent vacuum-assisted decellularization (VAD), and the ECM-rich hydrogel was prepared through peptic digestion of the decellularized trachea. The decellularized canine trachea exhibited a significant reduction in DNA content and major histocompatibility complex class II, while preserving crucial ECM components such as collagen, glycosaminoglycan, laminin, and fibronectin. Scanning electron microscope and fluorescent microscope images revealed a fibrous ECM network on the luminal side of the cell-free trachea, supporting epithelial cell attachment. Moreover, the ECM-rich hydrogel exhibited excellent viability for human mesenchymal stem cells encapsulated for 3 days, indicating the potential of cell-laden hydrogel in promoting the development of cartilage rings of the trachea. This study underscores the versatility of the trachea in producing two distinct cell carriers-decellularized scaffold and hydrogel-both containing the native biochemical niche essential for tracheal tissue engineering applications.
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Affiliation(s)
- Pensuda Sompunga
- Medical Sciences Program, Faculty of Medicine, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
| | - Watchareewan Rodprasert
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand
- Veterinary Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Sayamon Srisuwatanasagul
- Department of Anatomy, Faculty of Veterinary Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
| | - Somporn Techangamsuwan
- Department of Pathology, Faculty of Veterinary Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
| | - Sirinee Jirajessada
- Biology Program, Faculty of Science, Buriram Rajabhat University, Muang, Buriram, 31000, Thailand
| | - Rattanavinan Hanchaina
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
| | - Thaned Kangsamaksin
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
| | - Supansa Yodmuang
- Research Affairs, Faculty of Medicine, Chulalongkorn University, Ananda Mahidol Building, 1873 Rama 4 Rd, Pathumwan, Bangkok, 10330, Thailand.
- Center of Excellence in Biomaterial Engineering for Medical and Health, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.
- Clinical Excellence Center for Advanced Therapy Medicinal Products, King Chulalongkorn Memorial Hospital, Pathumwan, Bangkok, 10330, Thailand.
- Avatar Biotech for Oral Health & Healthy Longevity Research Unit, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.
| | - Chenphop Sawangmake
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand.
- Veterinary Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand.
- Department of Pharmacology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330, Thailand.
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Amaral VA, de Souza JF, Alves TFR, de Oliveira Junior JM, Severino P, Aranha N, Souto EB, Chaud MV. Psidium guajava L. phenolic compound-reinforced lamellar scaffold for tracheal tissue engineering. Drug Deliv Transl Res 2024; 14:62-79. [PMID: 37566362 PMCID: PMC10746760 DOI: 10.1007/s13346-023-01381-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/16/2023] [Indexed: 08/12/2023]
Abstract
The aim of this work was to develop a dense lamellar scaffold, as a biomimetic material with potential applications in the regeneration of tracheal tissue after surgical tumor resection. The scaffolds were produced by plastic compression technique, exploiting the use of total phenolic compounds (TPC) from Psidium guajava Linn as a potential cross-linking agent in a polymeric mixture based on collagen (COL), silk fibroin (SF), and polyethylene glycol 400 (PEG 400). Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) confirmed the chemical interactions between the polymers and the cross-linking of TPC between COL and SF. Morphological analyses showed scaffolds with porosity, interconnectivity, and a porous surface structure with a gyroid-like geometry. The analysis of the anisotropic degree resulted in anisotropic structures (0.1% TFC and 0.3% TFC) and an isotropic structure (0.5% TFC). In the mechanical properties, it was evidenced greater resistance for the 0.3% TFC formulation. The addition of TPC percentages did not result in a significant difference (p > 0.05) in swelling capacity and disintegration rate. The results confirmed that TPC were able to modulate the morphological, morphometric, and mechanical properties of scaffolds. Thus, this study describes a potential new material to improve the regeneration of major tracheal structures after surgical tumor removal.
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Affiliation(s)
- Venâncio A Amaral
- Laboratory of Biomaterials and Nanotechnology, University of Sorocaba, UNISO, Raposo Tavares, Sorocaba, São Paulo, 18023-000, Brazil
| | - Juliana Ferreira de Souza
- Laboratory of Biomaterials and Nanotechnology, University of Sorocaba, UNISO, Raposo Tavares, Sorocaba, São Paulo, 18023-000, Brazil
| | - Thais F R Alves
- Laboratory of Biomaterials and Nanotechnology, University of Sorocaba, UNISO, Raposo Tavares, Sorocaba, São Paulo, 18023-000, Brazil
| | - José M de Oliveira Junior
- Laboratory of Applied Nuclear Physics, University of Sorocaba, UNISO, Raposo Tavares, Sorocaba, São Paulo, 18023-000, Brazil
| | - Patrícia Severino
- Institute of Technology and Research, Tiradentes University, Murilo Dantas, Aracaju, Sergipe, 300, Brazil
| | - Norberto Aranha
- Laboratory of Biomaterials and Nanotechnology, University of Sorocaba, UNISO, Raposo Tavares, Sorocaba, São Paulo, 18023-000, Brazil
- College of Engineering of Bioprocess and Biotechnology, University of Sorocaba, UNISO, Raposo Tavares, Sorocaba, 18023-000, Brazil
| | - Eliana B Souto
- Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Jorge de Viterbo Ferreira, 4050-313, Porto, Portugal.
- MEDTECH, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal.
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal.
| | - Marco V Chaud
- Laboratory of Biomaterials and Nanotechnology, University of Sorocaba, UNISO, Raposo Tavares, Sorocaba, São Paulo, 18023-000, Brazil.
- College of Engineering of Bioprocess and Biotechnology, University of Sorocaba, UNISO, Raposo Tavares, Sorocaba, 18023-000, Brazil.
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Joo H, Min S, Cho SW. Advanced lung organoids for respiratory system and pulmonary disease modeling. J Tissue Eng 2024; 15:20417314241232502. [PMID: 38406820 PMCID: PMC10894554 DOI: 10.1177/20417314241232502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 01/30/2024] [Indexed: 02/27/2024] Open
Abstract
Amidst the recent coronavirus disease 2019 (COVID-19) pandemic, respiratory system research has made remarkable progress, particularly focusing on infectious diseases. Lung organoid, a miniaturized structure recapitulating lung tissue, has gained global attention because of its advantages over other conventional models such as two-dimensional (2D) cell models and animal models. Nevertheless, lung organoids still face limitations concerning heterogeneity, complexity, and maturity compared to the native lung tissue. To address these limitations, researchers have employed co-culture methods with various cell types including endothelial cells, mesenchymal cells, and immune cells, and incorporated bioengineering platforms such as air-liquid interfaces, microfluidic chips, and functional hydrogels. These advancements have facilitated applications of lung organoids to studies of pulmonary diseases, providing insights into disease mechanisms and potential treatments. This review introduces recent progress in the production methods of lung organoids, strategies for improving maturity, functionality, and complexity of organoids, and their application in disease modeling, including respiratory infection and pulmonary fibrosis.
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Affiliation(s)
- Hyebin Joo
- Department of Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Sungjin Min
- Department of Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Seung-Woo Cho
- Department of Biotechnology, Yonsei University, Seoul, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul, Republic of Korea
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Nahumi A, Peymani M, Asadi A, Abdolmaleki A, Panahi Y. Decellularized tracheal scaffold as a promising 3D scaffold for tissue engineering applications. Tissue Cell 2023; 85:102258. [PMID: 37918216 DOI: 10.1016/j.tice.2023.102258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 10/22/2023] [Accepted: 10/23/2023] [Indexed: 11/04/2023]
Abstract
Tissue engineering is a science that uses the combination of scaffolds, cells, and active biomolecules to make tissue in order to restore or maintain its function and improve the damaged tissue or even an organ in the laboratory. The purpose of this research was to study the characteristics and biocompatibility of decellularized sheep tracheal scaffolds and also to investigate the differentiation of Adipose-derived stem cells (AD-MSCs) into tracheal cells. After the decellularization of sheep tracheas through the detergent-enzyme method, histological evaluations, measurement of biochemical factors, measurement of DNA amount, and photographing the ultrastructure of the samples by scanning electron microscopy (SEM), they were also evaluated mechanically. Further, In order to check the viability and adhesion of stem cells to the decellularized scaffolds, adipose mesenchymal stem cells were cultured on the scaffolds, and the 3-(4,5-dimethylthiazol-2-yl)- 2,5-diphenyltetrazolium bromide (MTT) assay was performed. The expression analysis of the intended genes for the differentiation of mesenchymal stem cells into tracheal cells was evaluated by the real-time PCR method. These results show that the prepared scaffolds are an ideal model for engineering applications, have high biocompatibility, and that the tracheal scaffold provides a suitable environment for the differentiation of ADMSCs. This review provides a basis for future research on tracheal decellularization scaffolds, serves as a suitable model for organ regeneration, and paves the way for their use in clinical medicine.
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Affiliation(s)
- Aida Nahumi
- Department of Biology, Faculty of Sciences, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | - Maryam Peymani
- Department of Biology, Faculty of Sciences, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran.
| | - Asadollah Asadi
- Department of Biology, Faculty of Sciences, University of Mohaghegh Ardabili, Ardabil, Iran.
| | - Arash Abdolmaleki
- Department of Biophysics, Faculty of Advanced Technologies, University of Mohaghegh Ardabili, Namin, Iran
| | - Yassin Panahi
- Department of Basic Medical Sciences, khoy University of Medical Sciences, Khoy, Iran
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Tang H, Sun W, Liu X, Gao Q, Chen Y, Xie C, Lin W, Chen J, Wang L, Fan Z, Zhang L, Ren Y, She Y, He Y, Chen C. A bioengineered trachea-like structure improves survival in a rabbit tracheal defect model. Sci Transl Med 2023; 15:eabo4272. [PMID: 37729433 DOI: 10.1126/scitranslmed.abo4272] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 08/31/2023] [Indexed: 09/22/2023]
Abstract
A practical strategy for engineering a trachea-like structure that could be used to repair or replace a damaged or injured trachea is an unmet need. Here, we fabricated bioengineered cartilage (BC) rings from three-dimensionally printed fibers of poly(ɛ-caprolactone) (PCL) and rabbit chondrocytes. The extracellular matrix (ECM) secreted by the chondrocytes combined with the PCL fibers formed a "concrete-rebar structure," with ECM deposited along the PCL fibers, forming a grid similar to that of native cartilage. PCL fiber-hydrogel rings were then fabricated and alternately stacked with BC rings on silicone tubes. This trachea-like structure underwent vascularization after heterotopic transplantation into rabbits for 4 weeks. The vascularized bioengineered trachea-like structure was then orthotopically transplanted by end-to-end anastomosis to native rabbit trachea after a segment of trachea had been resected. The bioengineered trachea-like structure displayed mechanical properties similar to native rabbit trachea and transmural angiogenesis between the rings. The 8-week survival rate in transplanted rabbits was 83.3%, and the respiratory rate of these animals was similar to preoperative levels. This bioengineered trachea-like structure may have potential for treating tracheal stenosis and other tracheal injuries.
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Affiliation(s)
- Hai Tang
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
- Shanghai Engineering Research Center of Lung Transplantation, Shanghai 200433, China
| | - Weiyan Sun
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
- Shanghai Engineering Research Center of Lung Transplantation, Shanghai 200433, China
| | - Xiucheng Liu
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
- Shanghai Engineering Research Center of Lung Transplantation, Shanghai 200433, China
| | - Qing Gao
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
- Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yi Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
- Shanghai Engineering Research Center of Lung Transplantation, Shanghai 200433, China
| | - Chaoqi Xie
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
- Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Weikang Lin
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
- Shanghai Engineering Research Center of Lung Transplantation, Shanghai 200433, China
| | - Jiafei Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
- Shanghai Engineering Research Center of Lung Transplantation, Shanghai 200433, China
| | - Long Wang
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
- Shanghai Engineering Research Center of Lung Transplantation, Shanghai 200433, China
| | - Ziwen Fan
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
- Shanghai Engineering Research Center of Lung Transplantation, Shanghai 200433, China
| | - Lei Zhang
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
- Shanghai Engineering Research Center of Lung Transplantation, Shanghai 200433, China
| | - Yijiu Ren
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
- Shanghai Engineering Research Center of Lung Transplantation, Shanghai 200433, China
| | - Yunlang She
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
- Shanghai Engineering Research Center of Lung Transplantation, Shanghai 200433, China
| | - Yong He
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
- Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Chang Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
- Shanghai Engineering Research Center of Lung Transplantation, Shanghai 200433, China
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Shakir S, Hackett TL, Mostaço-Guidolin LB. Bioengineering lungs: An overview of current methods, requirements, and challenges for constructing scaffolds. Front Bioeng Biotechnol 2022; 10:1011800. [PMID: 36394026 PMCID: PMC9649450 DOI: 10.3389/fbioe.2022.1011800] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 10/17/2022] [Indexed: 09/28/2023] Open
Abstract
Chronic respiratory diseases remain a significant health burden worldwide. The only option for individuals with end-stage lung failure remains Lung Transplantation. However, suitable organ donor shortages and immune rejection following transplantation remain a challenge. Since alternative options are urgently required to increase tissue availability for lung transplantation, researchers have been exploring lung bioengineering extensively, to generate functional, transplantable organs and tissue. Additionally, the development of physiologically-relevant artificial tissue models for testing novel therapies also represents an important step toward finding a definite clinical solution for different chronic respiratory diseases. This mini-review aims to highlight some of the most common methodologies used in bioengineering lung scaffolds, as well as the benefits and disadvantages associated with each method in conjunction with the current areas of research devoted to solving some of these challenges in the area of lung bioengineering.
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Affiliation(s)
- Shahad Shakir
- Department of Mechanical and Aerospace Engineering, Carleton University, Ottawa, ON, Canada
| | - Tillie Louise Hackett
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, BC, Canada
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, BC, Canada
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Samat AA, Hamid ZAA, Yahaya BH. Tissue Engineering for Tracheal Replacement: Strategies and Challenges. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022:137-163. [PMID: 35389199 DOI: 10.1007/5584_2022_707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The critical feature in trachea replacement is to provide a hollow cylindrical framework that is laterally stable and longitudinally flexible, facilitating cartilage and epithelial tissue formation. Despite advanced techniques and sources of materials used, most inherent challenges are related to the complexity of its anatomy. Limited blood supply leads to insufficient regenerative capacity for cartilage and epithelium. Natural and synthetic scaffolds, different types of cells, and growth factors are part of tissue engineering approaches with varying outcomes. Pre-vascularization remains one of the crucial factors to expedite the regenerative process in tracheal reconstruction. This review discusses the challenges and strategies used in tracheal tissue engineering, focusing on scaffold implantation in clinical and preclinical studies conducted in recent decades.
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Affiliation(s)
- Asmak Abdul Samat
- Lung Stem Cell and Gene Therapy Group, Regenerative Medicine Cluster, Advanced Medical and Dental Institute (IPPT), Universiti Sains Malaysia, Penang, Malaysia
- Fundamental Dental and Medical Sciences, Kulliyyah of Dentistry, International Islamic University Malaysia, Kuantan, Pahang, Malaysia
| | - Zuratul Ain Abdul Hamid
- School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Penang, Malaysia
| | - Badrul Hisham Yahaya
- Lung Stem Cell and Gene Therapy Group, Regenerative Medicine Cluster, Advanced Medical and Dental Institute (IPPT), Universiti Sains Malaysia, Penang, Malaysia.
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Frejo L, Goldstein T, Swami P, Patel NA, Grande DA, Zeltsman D, Smith LP. A two-stage in vivo approach for implanting a 3D printed tissue-engineered tracheal replacement graft: A proof of concept. Int J Pediatr Otorhinolaryngol 2022; 155:111066. [PMID: 35189447 DOI: 10.1016/j.ijporl.2022.111066] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 01/04/2022] [Accepted: 02/12/2022] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To optimize a 3D printed tissue-engineered tracheal construct using a combined in vitro and a two-stage in vivo technique. METHODS A 3D-CAD (Computer-aided Design) template was created; rabbit chondrocytes were harvested and cultured. A Makerbot Replicator™ 2x was used to print a polycaprolactone (PCL) scaffold which was then combined with a bio-ink and the previously harvested chondrocytes. In vitro: Cell viability was performed by live/dead assay using Calcein A/Ethidium. Gene expression was performed using quantitative real-time PCR for the following genes: Collagen Type I and type II, Sox-9, and Aggrecan. In vivo: Surgical implantation occurred in two stages: 1) Index procedure: construct was implanted within a pocket in the strap muscles for 21 days and, 2) Final surgery: construct with vascularized pedicle was rotated into a segmental tracheal defect for 3 or 6 weeks. Following euthanasia, the construct and native trachea were explanted and evaluated. RESULTS In vitro: After 14 days in culture the constructs showed >80% viable cells. Collagen type II and sox-9 were overexpressed in the construct from day 2 and by day 14 all genes were overexpressed when compared to chondrocytes in monolayer. IN VIVO By day 21 (immediately before the rotation), cartilage formation could be seen surrounding all the constructs. Mature cartilage was observed in the grafts after 6 or 9 weeks in vivo. CONCLUSION This two-stage approach for implanting a 3D printed tissue-engineered tracheal replacement construct has been optimized to yield a high-quality, printable segment with cellular growth and viability both in vitro and in vivo.
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Affiliation(s)
- Lidia Frejo
- The Feinstein Institutes for Medical Research, Manhasset, NY, USA; Division of Pediatric Otolaryngology, Steven and Alexandra Cohen Children's Medical Center, New Hyde Park, NY, USA
| | - Todd Goldstein
- The Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | - Pooja Swami
- The Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | - Neha A Patel
- Division of Pediatric Otolaryngology, Steven and Alexandra Cohen Children's Medical Center, New Hyde Park, NY, USA; Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
| | - Daniel A Grande
- The Feinstein Institutes for Medical Research, Manhasset, NY, USA; Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
| | - David Zeltsman
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA; Division of Thoracic Surgery, Northwell Health, New Hyde Park, NY, USA; Division of Thoracic Surgery, Long Island Jewish Medical Center, New Hyde Park, NY, USA
| | - Lee P Smith
- Division of Pediatric Otolaryngology, Steven and Alexandra Cohen Children's Medical Center, New Hyde Park, NY, USA; Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA.
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Evaluation of physicochemical properties of polycaprolactone/gelatin/polydimethylsiloxane hybrid nanofibers as potential scaffolds for elastic tissue engineering. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-04071-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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10
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Lei C, Mei S, Zhou C, Xia C. Decellularized tracheal scaffolds in tracheal reconstruction: An evaluation of different techniques. J Appl Biomater Funct Mater 2021; 19:22808000211064948. [PMID: 34903089 DOI: 10.1177/22808000211064948] [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] [Indexed: 11/15/2022] Open
Abstract
In humans, the trachea is a conduit for ventilation connecting the throat and lungs. However, certain congenital or acquired diseases may cause long-term tracheal defects that require replacement. Tissue engineering is considered a promising method to reconstruct long-segment tracheal lesions and restore the structure and function of the trachea. Decellularization technology retains the natural structure of the trachea, has good biocompatibility and mechanical properties, and is currently a hotspot in tissue engineering studies. This article lists various recent representative protocols for the generation of decellularized tracheal scaffolds (DTSs), as well as their validity and limitations. Based on the advancements in decellularization methods, we discussed the impact and importance of mechanical properties, revascularization, recellularization, and biocompatibility in the production and implantation of DTS. This review provides a basis for future research on DTS and its application in clinical therapy.
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Affiliation(s)
- Chenyang Lei
- Department of Otorhinolaryngology, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Sheng Mei
- Department of Otorhinolaryngology, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Chun Zhou
- Department of Geriatrics, The 903 Hospital of the Chinese People's Liberation Army Joint Logistics Support Force, Hangzhou, China
| | - Chen Xia
- Department of Orthopedic Surgery, Zhejiang Provincial People's Hospital, Hangzhou, China
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Park JH, Ahn M, Park SH, Kim H, Bae M, Park W, Hollister SJ, Kim SW, Cho DW. 3D bioprinting of a trachea-mimetic cellular construct of a clinically relevant size. Biomaterials 2021; 279:121246. [PMID: 34775331 PMCID: PMC8663475 DOI: 10.1016/j.biomaterials.2021.121246] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 11/05/2021] [Accepted: 11/08/2021] [Indexed: 12/16/2022]
Abstract
Despite notable advances in extrusion-based 3D bioprinting, it remains a challenge to create a clinically-sized cellular construct using extrusion-based 3D printing due to long printing times adversely affecting cell viability and functionality. Here, we present an advanced extrusion-based 3D bioprinting strategy composed of a two-step printing process to facilitate creation of a trachea-mimetic cellular construct of clinically relevant size. A porous bellows framework is first printed using typical extrusion-based 3D printing. Selective printing of cellular components, such as cartilage rings and epithelium lining, is then performed on the outer grooves and inner surface of the bellows framework by a rotational printing process. With this strategy, 3D bioprinting of a trachea-mimetic cellular construct of clinically relevant size is achieved in significantly less total printing time compared to a typical extrusion-based 3D bioprinting strategy which requires printing of an additional sacrificial material. Tracheal cartilage formation was successfully demonstrated in a nude mouse model through a subcutaneous implantation study of trachea-mimetic cellular constructs wrapped with a sinusoidal-patterned tubular mesh preventing rapid resorption of cartilage rings in vivo. This two-step 3D bioprinting for a trachea-mimetic cellular construct of clinically relevant size can provide a fundamental step towards clinical translation of 3D bioprinting based tracheal reconstruction.
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Affiliation(s)
- Jeong Hun Park
- Wallace H. Coulter Department of Biomedical Engineering and Center for 3D Medical Fabrication, Georgia Institute of Technology and Emory University, 313 Ferst Drive, Atlanta, GA, 30332, USA
| | - Minjun Ahn
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Kyungbuk, 37673, Republic of Korea
| | - Sun Hwa Park
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, 137-710, Republic of Korea
| | - Hyeonji Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Kyungbuk, 37673, Republic of Korea
| | - Mihyeon Bae
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Kyungbuk, 37673, Republic of Korea
| | - Wonbin Park
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Kyungbuk, 37673, Republic of Korea
| | - Scott J Hollister
- Wallace H. Coulter Department of Biomedical Engineering and Center for 3D Medical Fabrication, Georgia Institute of Technology and Emory University, 313 Ferst Drive, Atlanta, GA, 30332, USA.
| | - Sung Won Kim
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, 137-710, Republic of Korea.
| | - Dong-Woo Cho
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Kyungbuk, 37673, Republic of Korea.
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12
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de Wit R, Siddiqi S, Tiemessen D, Snabel R, Veenstra GJ, Oosterwijk E, Verhagen A. Isolation of multipotent progenitor cells from pleura and pericardium for tracheal tissue engineering purposes. J Cell Mol Med 2021; 25:10869-10878. [PMID: 34725901 PMCID: PMC8642678 DOI: 10.1111/jcmm.16916] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 08/09/2021] [Accepted: 08/17/2021] [Indexed: 12/12/2022] Open
Abstract
Tissue engineering (TE) of long tracheal segments is conceptually appealing for patients with inoperable tracheal pathology. In tracheal TE, stem cells isolated from bone marrow or adipose tissue have been employed, but the ideal cell source has yet to be determined. When considering the origin of stem cells, cells isolated from a source embryonically related to the trachea may be more similar. In this study, we investigated the feasibility of isolating progenitor cells from pleura and pericard as an alternative cells source for tracheal tissue engineering. Porcine progenitor cells were isolated from pleura, pericard, trachea and adipose tissue and expanded in culture. Isolated cells were characterized by PCR, RNA sequencing, differentiation assays and cell survival assays and were compared to trachea and adipose‐derived progenitor cells. Progenitor‐like cells were successfully isolated and expanded from pericard and pleura as indicated by gene expression and functional analyses. Gene expression analysis and RNA sequencing showed a stem cell signature indicating multipotency, albeit that subtle differences between different cell sources were visible. Functional analysis revealed that these cells were able to differentiate towards chondrogenic, osteogenic and adipogenic lineages. Isolation of progenitor cells from pericard and pleura with stem cell features is feasible. Although functional differences with adipose‐derived stem cells were limited, based on their gene expression, pericard‐ and pleura‐derived stem cells may represent a superior autologous cell source for cell seeding in tracheal tissue engineering.
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Affiliation(s)
- Rayna de Wit
- Department of Cardio-thoracic surgery, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Sailay Siddiqi
- Department of Cardio-thoracic surgery, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Dorien Tiemessen
- Department of Urology, Radboud Institute for Molecular Life Science, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Rebecca Snabel
- Department of Molecular Developmental Biology, Radboud Institute for Molecular Life Science, Faculty of Science, Radboud University, Nijmegen, the Netherlands
| | - Gert Jan Veenstra
- Department of Molecular Developmental Biology, Radboud Institute for Molecular Life Science, Faculty of Science, Radboud University, Nijmegen, the Netherlands
| | - Egbert Oosterwijk
- Department of Urology, Radboud Institute for Molecular Life Science, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Ad Verhagen
- Department of Cardio-thoracic surgery, Radboud University Medical Center, Nijmegen, the Netherlands
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13
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Yuan Z, Ren Y, Shafiq M, Chen Y, Tang H, Li B, El-Newehy M, El-Hamshary H, Morsi Y, Zheng H, Mo X. Converging 3D Printing and Electrospinning: Effect of Poly(l-lactide)/Gelatin Based Short Nanofibers Aerogels on Tracheal Regeneration. Macromol Biosci 2021; 22:e2100342. [PMID: 34706143 DOI: 10.1002/mabi.202100342] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/13/2021] [Indexed: 12/28/2022]
Abstract
Recently, various tissue engineering based strategies have been pursued for the regeneration of tracheal tissues. However, previously developed tracheal scaffolds do not accurately mimic the microstructure and mechanical behavior of the native trachea, which restrict their clinical translation. Here, tracheal scaffolds are fabricated by using 3D printing and short nanofibers (SF) dispersion of poly(l-lactide)/gelatin (0.5-1.5 wt%) to afford tracheal constructs. The results display that the scaffolds containing 1.0 wt % of SF exhibit low density, good water absorption capacity, reasonable degradation rate, and stable mechanical properties, which were comparable to the native trachea. Moreover, the designed scaffolds possess good biocompatibility and promote the growth and infiltration of chondrocytes in vitro. The biocompatibility of tracheal scaffolds is further assessed after subcutaneous implantation in mice for up to 4 and 8 weeks. Histological assessment of tracheal constructs explanted at week 4 shows that scaffolds can maintain their structural integrity and support the formation of neo-vessels. Furthermore, cell-scaffold constructs gradually form cartilage-like tissues, which mature with time. Collectively, these engineered tracheal scaffolds not only possess appropriate mechanical properties to afford a stabilized structure but also a biomimetic extracellular matrix-like structure to accomplish tissue regeneration, which may have broad implications for tracheal regeneration.
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Affiliation(s)
- Zhengchao Yuan
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China
| | - Yijiu Ren
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, 200433, P. R. China
| | - Muhammad Shafiq
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China
| | - Yujie Chen
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China
| | - Hai Tang
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, 200433, P. R. China
| | - Baojie Li
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China
| | - Mohamed El-Newehy
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Hany El-Hamshary
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Yosry Morsi
- Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Boroondara, VIC, 3122, Australia
| | - Hui Zheng
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, 200433, P. R. China
| | - Xiumei Mo
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P. R. China
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14
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Extracellular Matrix Scaffold Using Decellularized Cartilage for Hyaline Cartilage Regeneration. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021. [PMID: 34582025 DOI: 10.1007/978-3-030-82735-9_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
The repair of osteochondral defects is among the top ten medical needs of humans in the 21st centuries with many countries facing rapidly aging population involved with osteoarthritis as a major contributor to global disease burden. Tissue engineering methods have offered new windows of hope to treat such disorders and disabilities. Regenerative approaches to cartilage injuries require careful replication of the complex microenvironment of the native tissue. The decellularized hyaline cartilage derived from human allografts or xenografts is potentially an ideal scaffold, simulating the mechanical and biochemical properties, as well as biological microarchitecture of the hyaline cartilage. There have been many attempts to regenerate clinically viable hyaline cartilage tissue using decellularized cartilage-derived extracellular matrix with stem cell technology. This chapter describes the reproducible methods for hyaline cartilage decellularization and recellularization. In addition, quality control and characterization requirements of the product at each step, as well as the clinical applications of final product have been discussed.
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15
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Sun F, Lu Y, Wang Z, Zhang B, Shen Z, Yuan L, Wu C, Wu Q, Yang W, Zhang G, Pan Z, Shi H. Directly construct microvascularization of tissue engineering trachea in orthotopic transplantation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 128:112201. [PMID: 34474813 DOI: 10.1016/j.msec.2021.112201] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 05/10/2021] [Accepted: 05/17/2021] [Indexed: 12/17/2022]
Abstract
Tissue engineering technology provides effective alternative treatments for tracheal reconstruction. The formation of a functional microvascular network is essential to support cell metabolism and ensure the long-term survival of grafts. However, given the lack of an identifiable vascular pedicle of the trachea that could be anastomosed to the blood vessels directly in the recipient's neck, successful tracheal transplantation faces significant challenges in rebuilding the adequate blood supply of the graft. Herein, we describe a one-step method to construct microvascularization of tissue-engineered trachea in orthotopic transplantation. Forty rabbit tracheae were decellularized using a vacuum-assisted decellularization (VAD) method. Histological appearance and immunohistochemical (IHC) analysis demonstrated efficient removal of cellular components and nuclear material from natural tissue, which was also confirmed by 4'-6-diamidino-2-phenylindole(DAPI) staining and DNA quantitative analysis, thus significantly reducing the antigenicity. Scanning electron microscopy (SEM), immunofluorescence (IF) analysis, GAG and collagen quantitative analysis showed that the hierarchical structures, composition and integrity of the extracellular matrix (ECM) were protected. IF analysis also demonstrated that basic fibroblast growth factor (b-FGF) was preserved during the decellularization process, and also exerted biocompatibility and proangiogenic properties by the chick chorioallantoic membrane(CAM) assay. Xenotransplantation assays indicated that the VAD tracheal matrix would no longer induced inflammatory reactions implanted in the body for 4 weeks after treated by VAD more than 16 h. Furthermore, we seeded the matrix with bone marrow-derived endothelial cells (BMECs) in vitro and performed in vivo tracheal patch repair assays to prove the biocompatibility and neovascularization of VAD-treated tracheal matrix, and the formation of a vascular network around the patch promoted the crawling of surrounding ciliated epithelial cells to the surface of the graft. We conclude that this natural VAD tracheal matrix is non-immunogenic and no inflammatory reactions in vivo transplantation. Seeding with BMECs on the grafts and then performing orthotopic transplantation can effectively promote the microvascularization and accelerate the native epithelium cells crawling to the lumen of the tracheal graft.
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Affiliation(s)
- Fei Sun
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, China; Clinical Medical College, Yangzhou University, Yangzhou 225001, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, China
| | - Yi Lu
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, China; Clinical Medical College, Yangzhou University, Yangzhou 225001, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, China
| | - Zhihao Wang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, China; Clinical Medical College, Yangzhou University, Yangzhou 225001, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, China
| | - Boyou Zhang
- Clinical Medical College, Yangzhou University, Yangzhou 225001, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, China; The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Zhiming Shen
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, China; Clinical Medical College, Yangzhou University, Yangzhou 225001, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, China
| | - Lei Yuan
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, China; Clinical Medical College, Yangzhou University, Yangzhou 225001, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, China
| | - Cong Wu
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, China; Clinical Medical College, Yangzhou University, Yangzhou 225001, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, China
| | - Qiang Wu
- Clinical Medical College, Yangzhou University, Yangzhou 225001, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, China; The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Wenlong Yang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, China; Clinical Medical College, Yangzhou University, Yangzhou 225001, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, China
| | - Guozhong Zhang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, China; Clinical Medical College, Yangzhou University, Yangzhou 225001, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, China
| | - Ziyin Pan
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, China
| | - Hongcan Shi
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou 225001, China; Clinical Medical College, Yangzhou University, Yangzhou 225001, China; Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou 225001, China.
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16
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Sun F, Lu Y, Wang Z, Shi H. Vascularization strategies for tissue engineering for tracheal reconstruction. Regen Med 2021; 16:549-566. [PMID: 34114475 DOI: 10.2217/rme-2020-0091] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Tissue engineering technology provides effective alternative treatments for tracheal reconstruction. The formation of a functional microvascular network is essential to support cell metabolism and ensure the long-term survival of grafts. Although several tracheal replacement therapy strategies have been developed in the past, the critical significance of the formation of microvascular networks in 3D scaffolds has not attracted sufficient attention. Here, we review key technologies and related factors of microvascular network construction in tissue-engineered trachea and explore optimized preparation processes of vascularized functional tissues for clinical applications.
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Affiliation(s)
- Fei Sun
- Clinical Medical College, Yangzhou University, Yangzhou, 225001, PR China.,Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, PR China.,Jiangsu Key Laboratory of Integrated Traditional Chinese & Western Medicine for Prevention & Treatment of Senile Diseases, Yangzhou University, Yangzhou, 225001, PR China
| | - Yi Lu
- Clinical Medical College, Yangzhou University, Yangzhou, 225001, PR China.,Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, PR China.,Jiangsu Key Laboratory of Integrated Traditional Chinese & Western Medicine for Prevention & Treatment of Senile Diseases, Yangzhou University, Yangzhou, 225001, PR China
| | - Zhihao Wang
- Clinical Medical College, Yangzhou University, Yangzhou, 225001, PR China.,Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, PR China.,Jiangsu Key Laboratory of Integrated Traditional Chinese & Western Medicine for Prevention & Treatment of Senile Diseases, Yangzhou University, Yangzhou, 225001, PR China
| | - Hongcan Shi
- Clinical Medical College, Yangzhou University, Yangzhou, 225001, PR China.,Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, PR China.,Jiangsu Key Laboratory of Integrated Traditional Chinese & Western Medicine for Prevention & Treatment of Senile Diseases, Yangzhou University, Yangzhou, 225001, PR China
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17
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Saeidinezhad M, Razban V, Safizadeh H, Ezzatabadipour M. Effects of maternal consumption of morphine on rat skeletal system development. BMC Musculoskelet Disord 2021; 22:435. [PMID: 33985485 PMCID: PMC8120720 DOI: 10.1186/s12891-021-04321-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 05/05/2021] [Indexed: 11/19/2022] Open
Abstract
Background Opioid abuse is among the most ubiquitous issues world-wide, and when it happens in mothers, it puts them at risk of diseases that can be transferred to the next generation. Previous studies have indicated that morphine addiction during pregnancy could inhibit development in rat embryos and infants. The present study focused on the effects of maternal consumption of morphine on rat skeletal system development and also investigate the molecular pathway of chondrogenesis and osteogenesis of infants from control and addicted rat groups. Methods Thirty-two female rats were randomly assigned to four groups. The groups consisted of one- and seven-day-old female infants which were born of morphine-dependent mothers and a control group for each of them. Experimental groups received oral morphine at the final dose of 0.4 mg/ml/day. Withdrawal signs were confirmation of morphine dependency. Female rats were crossed with male rats and coupling time was recorded. Fixed bones of all groups were processed and then stained by hematoxyline-eosin method. Thickness and cell number of proximal and distal growth plate of bones were measured. The cartilage and bone cells were stained by alcian blue/alizarin red method. Additionally, the gene expression of alkaline phosphatase, osteocalcin, and COLL2 and SOX9 gene expression were studied immuno-histochemically. Results Unfavorable effects of morphine on histological measurements were observed in one-day and seven-day infants, with more effects on seven-day infants. The thickness and cell number of the proximal and distal growth plate of morphine-dependent rat offsprings were reduced significantly. Furthermore, morphine reduced growth of primary and secondary ossification centers, and thus, longitudinal bone growth was reduced. Moreover, a decrease in the alkaline phosphatase, osteocalcin, COLL2 and SOX9 gene expression, and the number of stained cells was observed. More adverse effects of morphine in seven-day infants compared to one-day infants which showed the time dependent of morphine to the time length of administration. Conclusion Histochemistry and immunohistochemistry findings on cartilage and bone matrix formation, as well as protein expression of chondrogenic and osteogenic markers suggest that morphine dependence in pregnant mothers may impair intra-cartilaginous osteogenesis in post-natal rats. Supplementary Information The online version contains supplementary material available at 10.1186/s12891-021-04321-6.
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Affiliation(s)
- Maryam Saeidinezhad
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Somayeh Cross-road, Sajad Boulevard, Ebnesina Street, Kerman, 7619813159, Iran.,Department of Anatomical Sciences, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Vahid Razban
- Department of Molecular Medicine, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.,Stem cell Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hosein Safizadeh
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Somayeh Cross-road, Sajad Boulevard, Ebnesina Street, Kerman, 7619813159, Iran
| | - Massood Ezzatabadipour
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Somayeh Cross-road, Sajad Boulevard, Ebnesina Street, Kerman, 7619813159, Iran. .,Department of Anatomical Sciences, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran.
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18
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Wang Z, Sun F, Lu Y, Zhang B, Zhang G, Shi H. Rapid Preparation Method for Preparing Tracheal Decellularized Scaffolds: Vacuum Assistance and Optimization of DNase I. ACS OMEGA 2021; 6:10637-10644. [PMID: 34056217 PMCID: PMC8153783 DOI: 10.1021/acsomega.0c06247] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 03/03/2021] [Indexed: 06/12/2023]
Abstract
Decellularized scaffolds are an effective way for tracheal tissue engineering to perform alternative treatments. However, clinically used decellularized tracheal scaffolds have a long preparation cycle. The purpose of this study is to improve the efficiency of decellularization by vacuum assistance and optimizing the concentration of DNase I in the decellularization process and to quickly obtain tracheal decellularized scaffolds. The trachea of New Zealand white rabbits was decellularized with 2, 4, 6, and 8 KU/mL DNase I under vacuum. The performance of the decellularized tracheal scaffold was evaluated through histological analysis, immunohistochemical staining, DNA residue, extracellular matrix composition, scanning electron microscopy, mechanical properties, cell compatibility, and in vivo experiments. Histological analysis and immunohistochemical staining showed that compared with the native trachea, the hierarchical structure of the decellularized trachea remained unchanged after decellularization, nonchondrocytes were effectively removed, and the antigenicity of the scaffold was significantly weakened. Deoxyribonucleic acid (DNA) quantitative analysis showed that the amount of residual DNA in the 6-KU group was significantly decreased. Scanning electron microscopy and mechanical tests showed that small gaps appeared in the basement membrane of the 6-KU group, and the mechanical properties decreased. The CCK-8 test results and in vivo experiments showed that the 6-KU group's acellular scaffold had good cell compatibility and new blood vessels were visible on the surface. Taken together, the 6-KU group could quickly prepare rabbit tracheal scaffolds with good decellularization effects in only 2 days, which significantly shortened the preparation cycle reducing the required cost.
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19
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Novel composite trachea grafts using 3-dimensional printing. JTCVS OPEN 2021; 5:152-160. [PMID: 36003188 PMCID: PMC9390405 DOI: 10.1016/j.xjon.2020.11.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 11/05/2020] [Indexed: 11/29/2022]
Abstract
Objective Porcine-derived small intestine submucosa (SIS) extracellular matrix (ECM) surgical patches claim to have greater regenerative properties compared with dermal extracellular matrices. We hypothesized that using SIS-ECM in a bioengineered composite tracheal graft would allow better incorporation into the native tissue. Methods Two types of size-matched polycaprolactone support scaffolds were designed: rigid and flexible. The SIS-ECM was wrapped around the polycaprolactone supports lining the inside and outside of the graft. The grafts were implanted in 4 Yorkshire pigs, replacing an ∼2 cm segment of native trachea. Airway patency was evaluated with computed tomography scans and explanted grafts were examined grossly and histologically. Results All animals survived through the immediate postoperative period. Generally, extraluminal examination showed a smooth transition between native and graft without significant volumetric loss. Animals that received the flexible design survived ∼10 days longer than those that received the rigid design; however, severe perianastomotic intraluminal granulation tissue was observed. The rigid design had less significant intraluminal granulation tissue development at the distal anastomosis, but partial dehiscence had occurred at the proximal anastomosis interrupting graft incorporation. Conclusions The generally good extraluminal graft incorporation in our composite tracheal graft highlights some increased regenerative capabilities of SIS-ECM. However, the presence of intraluminal granulation tissue indicates that its use as an off-the-shelf, unaltered substrate in an airway graft is still not ideal. Further research must be conducted to determine whether a modification of the substrate is possible to enhance luminal airway incorporation and to exert control over the mechanisms responsible for granulation tissue development.
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20
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KhaliliJafarabad N, Behnamghader A, Khorasani MT, Mozafari M. Platelet-rich plasma-hyaluronic acid/chondrotin sulfate/carboxymethyl chitosan hydrogel for cartilage regeneration. Biotechnol Appl Biochem 2021; 69:534-547. [PMID: 33608921 DOI: 10.1002/bab.2130] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 02/07/2021] [Indexed: 12/30/2022]
Abstract
In this study, the chondrogenic potential of hyaluronic acid/chondrotin sulfate/carboxymethyl chitosan hydrogels with adipose-derived mesenchymal stem cells (ADMSCs) was evaluated. Here, hyaluronic acid, chondrotin sulfate, and carboxymethyl chitosan were used as the substrate for cartilage tissue engineering in which the hydrogel is formed due to electrostatic and hydrogen bonds through mixing the polymers. Because of the instability of this hydrogel in the biological environment, 1-ethyl-3-(3-dimethylaminopropyl-carbodiimide hydrochloride/N-hydroxy-succinimide was used as a crosslinker to increase the hydrogel stability. The hydrogels showed reasonable stability due to the combined effect of self-crosslinking and chemical crosslinking. The cells were treated with the prepared hydrogel samples for 14 and 21 days in nondifferentiation medium for evaluation of the cellular behavior of ADMSCs. Gene expression evaluation was performed, and expression of specific genes involved in differentiation was shown in the crosslinked hydrogel with platelet-rich plasma (PRP) (H-EN-P) had increased the gene expression levels. Quantification of immunofluorescence intensity indicated the high level of expression of SOX9 in H-EN-P hydrogel. Based on the results, we confirmed that the presence of PRP and the similarity of the hydrogel constituents to the cartilage extracellular matrix could have positive effects on the differentiation of the cells, which is favorable for cartilage tissue engineering approaches.
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Affiliation(s)
- Nadieh KhaliliJafarabad
- Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Aliasghar Behnamghader
- Departments of Nanotechnology and Advanced Materials, Materials and Energy Research Center, Tehran, Iran
| | | | - Masoud Mozafari
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
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21
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Weber JF, Rehmani SS, Baig MZ, Jadoon Y, Bhora FY. Successes and Failures in Tracheal Bioengineering: Lessons Learned. Ann Thorac Surg 2020; 112:1089-1094. [PMID: 33186605 DOI: 10.1016/j.athoracsur.2020.10.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 07/30/2020] [Accepted: 10/12/2020] [Indexed: 11/17/2022]
Abstract
BACKGROUND Controversy in tracheal reconstruction using grafts and bioengineered constructs highlights the importance of animal studies before human application. Small animal models help to refine designs but do not adequately model sizes relevant to human anatomy. We have conducted extensive large animal studies and summarize our findings in 26 consecutive transplants. METHODS We pooled 26 large animal studies together to investigate common elements related to successes and failures. In general the engineered tracheal graft consisted of a decellularized extracellular matrix surgical patch supported by a 3-dimensional-printed plastic polymer scaffold. Circumferential graft coverage ranged from 50% to 100%, spanning the length of 4 to 6 tracheal rings. Some grafts included embedded stem cells. Control grafts were fabricated without the support scaffold. At death grafts were harvested and examined grossly and through histology. RESULTS The support scaffold prevented graft malacia and collapse. Luminal epithelialization was most extensive in grafts with smaller circumferential coverage. Smaller circumferential coverage was also associated with longest animal survival. Chondrogenesis was only observed in grafts with embedded stem cells. Survival time was shortest in 100% circumferential grafts. Granulation tissue was an issue for all graft designs. CONCLUSIONS Large animal models capture challenges and complexities relevant to human anatomy. Development of granulation tissue remains a challenge, especially in circumferential grafts. Significant additional research is needed to investigate granulation tissue formation and to provide actionable insight into its management.
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Affiliation(s)
- Joanna F Weber
- Department of Surgical Oncology, Nuvance Health, Rudy L. Ruggles Biomedical Research Institute, Danbury, Connecticut
| | - Sadiq S Rehmani
- Department of Internal Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Mirza Zain Baig
- Department of Surgical Oncology, Nuvance Health, Rudy L. Ruggles Biomedical Research Institute, Danbury, Connecticut
| | - Yamna Jadoon
- Medical College, Aga Khan University Hospital, Karachi, Pakistan
| | - Faiz Y Bhora
- Department of Surgical Oncology, Nuvance Health, Vassar Brother's Medical Center, Poughkeepsie, New York.
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A Multi-Inlet Microfluidic Nozzle Head with Shape Memory Alloy-Based Switching for Biomaterial Printing with Precise Flow Control. BIOCHIP JOURNAL 2020. [DOI: 10.1007/s13206-020-4402-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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23
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Cheng SF, Wu S, Li QP, Sang HY, Fan ZY. Airway reconstruction using decellularized aortic xenografts in a dog model. Organogenesis 2020; 16:73-82. [PMID: 32674702 DOI: 10.1080/15476278.2020.1790273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
Tracheal reconstruction after extensive resection remains a challenge in thoracic surgery. Aortic allograft has been proposed to be a potential tracheal substitute. However, clinically, its application is limited for the shortage of autologous aortic segment. Whether xenogeneic aortic biosheets can be used as tracheal substitutes remains unknown. In the present study, we investigated the possibility in dog model. The results show that all dogs were survived without airway symptoms at 6 months after tracheal reconstruction with gently decellularized bovine carotid arteries. In the interior of engrafted areas, grafted patch integrated tightly with the residual native tracheal tissues and tracheal defects in the lumen were repaired smoothly without obvious inflammation, granulation, anastomotic leakage, or stenosis. In addition, histological and scanning electron microscopy examination showed that grafted patches were covered with ciliated columnar epithelium similar to epithelium in native trachea, which indicated successfully re-epithelialization of decellularized bovine carotid arteries in dogs. These findings provide preclinical investigation of xenogeneic aortic biosheets in serving as tracheal substitute in a dog model, which proposes that decellularized biosheets of bovine carotid may be a potential material for bioartificial tracheal graft.
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Affiliation(s)
- Shao-Fei Cheng
- Department of Thoracic-cardiovascular Surgery, Shanghai Jiaotong University Affiliated Sixth Hospital , Shanghai, China
| | - Song Wu
- Department of Thoracic-cardiovascular Surgery, Shanghai Jiaotong University Affiliated Sixth Hospital , Shanghai, China
| | - Qian-Ping Li
- Department of Thoracic-cardiovascular Surgery, Shanghai Jiaotong University Affiliated Sixth Hospital , Shanghai, China
| | - Hong-Yang Sang
- Department of Thoracic-cardiovascular Surgery, Shanghai Jiaotong University Affiliated Sixth Hospital , Shanghai, China
| | - Zheng-Yang Fan
- Department of Thoracic-cardiovascular Surgery, Shanghai Jiaotong University Affiliated Sixth Hospital , Shanghai, China
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Wang Z, Sun F, Lu Y, Pan S, Yang W, Zhang G, Ma J, Shi H. Rapid preparation of decellularized trachea as a 3D scaffold for organ engineering. Int J Artif Organs 2020; 44:55-64. [PMID: 32448040 DOI: 10.1177/0391398820924041] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE To shorten the preparation time of rabbit decellularized tracheal matrix through a modified detergent-enzymatic method with higher concentration of DNase (50 kU/mL), providing an experimental and theoretical basis for clinical decellularization technology. METHODS The control group was a natural trachea, and the experimental group was a tracheal matrix subjected to two and four decellularization cycles. The performance of each group of samples was evaluated by histology and immunohistochemical staining, scanning electron microscopy, biomechanical property testing, inoculation and cytotoxicity tests, and allograft experiments. RESULTS The results showed that the nuclei of the nonchondral areas of the tracheal stroma were essentially completely removed and MHC-I and MHC-II antigens were removed after two decellularization cycles. Histological staining and scanning electron microscopy showed that the extracellular matrix was retained and the basement membrane was intact. Cell inoculation and proliferation tests confirmed that the acellular tracheal matrix had good biocompatibility, and the proliferation capacity of bone mesenchymal stem cells on the matrix was increased in the experimental group compared with the control group (p < 0.05). Histological staining and CD68 molecular marker analysis after the allograft experiment showed that the inflammatory response of the acellular tracheal matrix was weak and the infiltration of surrounding macrophages was reduced. CONCLUSION A modified detergent-enzymatic method with an increased DNase (50 kU/mL) concentration requires only two cycles (4 days) to obtain a decellularized rabbit tracheal matrix with a short preparation time, good biocompatibility, suitable mechanical properties, and reduced preparation cost.
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Affiliation(s)
- Zhihao Wang
- Department of Cardiothoracic Surgery, College of Clinical Medicine, Yangzhou University, Yangzhou, China
- The Research Center for Translational Medicine, Yangzhou University, Yangzhou, China
| | - Fei Sun
- Department of Cardiothoracic Surgery, College of Clinical Medicine, Yangzhou University, Yangzhou, China
- The Research Center for Translational Medicine, Yangzhou University, Yangzhou, China
- The Hospital Affiliated to Medical School of Yangzhou University (Taizhou People's Hospital), Taizhou, China
| | - Yi Lu
- Department of Cardiothoracic Surgery, College of Clinical Medicine, Yangzhou University, Yangzhou, China
- The Research Center for Translational Medicine, Yangzhou University, Yangzhou, China
| | - Shu Pan
- Department of Cardiothoracic Surgery, College of Clinical Medicine, Yangzhou University, Yangzhou, China
- The Research Center for Translational Medicine, Yangzhou University, Yangzhou, China
- Department of Thoracic Surgery, First Affiliated Hospital of Soochow University, Suzhou, China
| | - Wenlong Yang
- Department of Cardiothoracic Surgery, College of Clinical Medicine, Yangzhou University, Yangzhou, China
- The Research Center for Translational Medicine, Yangzhou University, Yangzhou, China
| | - Guozhong Zhang
- Department of Cardiothoracic Surgery, College of Clinical Medicine, Yangzhou University, Yangzhou, China
- The Research Center for Translational Medicine, Yangzhou University, Yangzhou, China
| | - Jun Ma
- Department of Cardiothoracic Surgery, College of Clinical Medicine, Yangzhou University, Yangzhou, China
- The Research Center for Translational Medicine, Yangzhou University, Yangzhou, China
| | - Hongcan Shi
- Department of Cardiothoracic Surgery, College of Clinical Medicine, Yangzhou University, Yangzhou, China
- The Research Center for Translational Medicine, Yangzhou University, Yangzhou, China
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Kirillova A, Bushev S, Abubakirov A, Sukikh G. Bioethical and Legal Issues in 3D Bioprinting. Int J Bioprint 2020; 6:272. [PMID: 33088986 PMCID: PMC7557521 DOI: 10.18063/ijb.v6i3.272] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 03/16/2020] [Indexed: 01/09/2023] Open
Abstract
Bioethical and legal issues of three-dimensional (3D) bioprinting as the emerging field of biotechnology have not yet been widely discussed among bioethicists around the world, including Russia. The scope of 3D bioprinting includes not only the issues of the advanced technologies of human tissues and organs printing but also raises a whole layer of interdisciplinary problems of modern science, technology, bioethics, and philosophy. This article addresses the ethical and legal issues of bioprinting of artificial human organs.
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Affiliation(s)
- Anastasia Kirillova
- National Medical Research Center for Obstetrics, Gynecology and Perinatology Named After Academician V.I. Kulakov of the Ministry of Healthcare of Russian Federation, Moscow, 117513, Russia
| | - Stanislav Bushev
- Department of Philosophy, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Aydar Abubakirov
- National Medical Research Center for Obstetrics, Gynecology and Perinatology Named After Academician V.I. Kulakov of the Ministry of Healthcare of Russian Federation, Moscow, 117513, Russia
| | - Gennady Sukikh
- National Medical Research Center for Obstetrics, Gynecology and Perinatology Named After Academician V.I. Kulakov of the Ministry of Healthcare of Russian Federation, Moscow, 117513, Russia
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26
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Lee SJ, Choi JS, Eom MR, Jo HH, Kwon IK, Kwon SK, Park SA. Dexamethasone loaded bilayered 3D tubular scaffold reduces restenosis at the anastomotic site of tracheal replacement: in vitro and in vivo assessments. NANOSCALE 2020; 12:4846-4858. [PMID: 32016227 DOI: 10.1039/c9nr10341d] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Despite recent developments in the tracheal tissue engineering field, the creation of a patient specific substitute possessing both appropriate mechanical and biointerfacial properties remains challenging. Most tracheal replacement therapies fail due to restenosis at the anastomosis site. In this study, we designed a robust, biodegradable, 3D tubular scaffold by combining electrospinning (ELSP) and 3D (three-dimensional) printing techniques for use in transplantation therapy. After that, we loaded dexamethasone (DEX) onto the 3D tubular scaffold using mild surface modification reactions by using polydopamine (PDA), polyethyleneimine (PEI), and carboxymethyl-β-cyclodextrin (βCD). As a result, the fabricated 3D tubular scaffold had robust mechanical properties and the chemical modifications were confirmed to have proceeded successfully by physico-chemical analysis. The surface treatments allowed for a larger amount of DEX to be loaded onto the βCD modified scaffold as compared to the bare group. In vitro and in vivo studies demonstrated that the DEX loaded 3D tubular scaffold exhibited significantly enhanced anti-inflammation activity, enhanced tracheal mucosal regeneration, and formation of a patent airway. From our results, we believe that our system may represent an innovative paradigm in tracheal tissue engineering by providing proper mechanical properties and successful formation of tracheal tissue as a means of remodeling and healing tracheal defects for use in transplantation therapy.
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Affiliation(s)
- Sang Jin Lee
- Department of Nature-Inspired Nanoconvergence Systems, Korea Institute of Machinery and Materials, 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Republic of Korea. and Department of Dental Materials, School of Dentistry, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Ji Suk Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.
| | - Min Rye Eom
- Department of Otorhinolaryngology-Head and Neck Surgery, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.
| | - Ha Hyeon Jo
- Department of Nature-Inspired Nanoconvergence Systems, Korea Institute of Machinery and Materials, 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Republic of Korea.
| | - Il Keun Kwon
- Department of Dental Materials, School of Dentistry, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Seong Keun Kwon
- Department of Otorhinolaryngology-Head and Neck Surgery, Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea. and Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Su A Park
- Department of Nature-Inspired Nanoconvergence Systems, Korea Institute of Machinery and Materials, 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Republic of Korea.
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27
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Choi JS, Huh BK, Lee SJ, Han MJ, Eom MR, Ahn HJ, Jin YJ, Park SA, Choy YB, Kwon SK. Tranilast-loaded tubular scaffold and surgical suture for suppression of stenosis after tracheal prosthesis transplantation. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2019.09.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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28
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Formulation and Optimization of Ansamycin-Loaded Polymeric Nanoparticles Using Response Surface Methodology for Bacterial Meningitis. BIONANOSCIENCE 2020. [DOI: 10.1007/s12668-019-00713-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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29
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Sukumaran S, Nair K, Velmurugan R. Influence of polylactic acid and polycaprolactone on dissolution characteristics of ansamycin-loaded polymeric nanoparticles: An unsatisfied attempt for drug release profile. JOURNAL OF PHARMACEUTICAL NEGATIVE RESULTS 2020. [DOI: 10.4103/jpnr.jpnr_26_19] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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30
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Gao B, Jing H, Gao M, Wang S, Fu W, Zhang X, He X, Zheng J. Long-segmental tracheal reconstruction in rabbits with pedicled Tissue-engineered trachea based on a 3D-printed scaffold. Acta Biomater 2019; 97:177-186. [PMID: 31352107 DOI: 10.1016/j.actbio.2019.07.043] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 07/20/2019] [Accepted: 07/24/2019] [Indexed: 12/13/2022]
Abstract
Long-segmental tracheal defects constitute an intractable clinical problem, due to the lack of satisfactory tracheal substitutes for surgical reconstruction. Tissue engineered artificial substitutes could represent a promising approach to tackle this challenge. In our current study, tissue-engineered trachea, based on a 3D-printed poly (l-lactic acid) (PLLA) scaffold with similar morphology to the native trachea of rabbits, was used for segmental tracheal reconstruction. The 3D-printed scaffolds were seeded with chondrocytes obtained from autologous auricula, dynamically pre-cultured in vitro for 2 weeks, and pre-vascularized in vivo for another 2 weeks to generate an integrated segmental trachea organoid unit. Then, segmental tracheal defects in rabbits were restored by transplanting the engineered tracheal substitute with pedicled muscular flaps. We found that the combination of in vitro pre-culture and in vivo pre-vascularization successfully generated a segmental tracheal substitute with bionic structure and mechanical properties similar to the native trachea of rabbits. Moreover, the stable blood supply provided by the pedicled muscular flaps facilitated the survival of chondrocytes and accelerated epithelialization, thereby improving the survival rate. The segmental trachea substitute engineered by a 3D-printed scaffold, in vitro pre-culture, and in vivo pre-vascularization enhanced survival in an early stage post-operation, presenting a promising approach for surgical reconstruction of long segmental tracheal defects. STATEMENT OF SIGNIFICANCE: We found that the combination of in vitro pre-culture and in vivo pre-vascularization successfully generated a segmental tracheal substitute with bionic structure and mechanical properties similar to the native trachea of rabbits. Moreover, the stable blood supply provided by the pedicled muscular flaps facilitated the survival of chondrocytes and accelerated epithelialization, thereby improving the survival rate of the rabbits. The segmental trachea substitute engineered by a 3D-printed scaffold, in vitro pre-culture, and in vivo pre-vascularization enhanced survival in an early stage post-operation, presenting a promising approach for surgical reconstruction of long segmental tracheal defects.
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Affiliation(s)
- Botao Gao
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678 Dongfang Road, Shanghai 200127, People's Republic of China
| | - Hui Jing
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678 Dongfang Road, Shanghai 200127, People's Republic of China
| | - Manchen Gao
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678 Dongfang Road, Shanghai 200127, People's Republic of China; Department of Pediatric Cardiac Surgery, National Center for Cardiovascular Disease and Fuwai Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, 167 Beilishi Road, Xicheng, Beijing 100037, People's Republic of China
| | - Shoubao Wang
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678 Dongfang Road, Shanghai 200127, People's Republic of China; Department of Plastic and Reconstrucive Surgery, Shanghai 9th People's Hospital, 639 Zhi Zao Ju Road, Shanghai 200011, People's Republic of China
| | - Wei Fu
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678 Dongfang Road, Shanghai 200127, People's Republic of China; Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine, 1678 Dong Fang Road, Shanghai 200127, People's Republic of China
| | - Xiaoyang Zhang
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678 Dongfang Road, Shanghai 200127, People's Republic of China
| | - Xiaomin He
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678 Dongfang Road, Shanghai 200127, People's Republic of China
| | - Jinghao Zheng
- Department of Cardiothoracic Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 1678 Dongfang Road, Shanghai 200127, People's Republic of China.
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31
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Frejo L, Grande DA. 3D-bioprinted tracheal reconstruction: an overview. Bioelectron Med 2019; 5:15. [PMID: 32232104 PMCID: PMC7098220 DOI: 10.1186/s42234-019-0031-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 08/16/2019] [Indexed: 11/10/2022] Open
Abstract
Congenital tracheomalacia and tracheal stenosis are commonly seen in premature infants. In adulthood, are typically related with chronic obstructive pulmonary disease, and can occur secondarily from tracheostomy, prolong intubation, trauma, infection and tumors. Both conditions are life-threatening when not managed properly. There are still some surgical limitations for certain pathologies, however tissue engineering is a promising approach to treat massive airway dysfunctions. 3D-bioprinting have contributed to current preclinical and clinical efforts in airway reconstruction. Several strategies have been used to overcome the difficulty of airway reconstruction such as scaffold materials, construct designs, cellular types, biologic components, hydrogels and animal models used in tracheal reconstruction. Nevertheless, additional long-term in vivo studies need to be performed to assess the efficacy and safety of tissue-engineered tracheal grafts in terms of mechanical properties, behavior and, the possibility of further stenosis development.
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Affiliation(s)
- Lidia Frejo
- Orthopaedic Research Laboratory, The Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA
- Division of Otolaryngology and Communicative Disorders-Pediatric Otolaryngology, Long Island Jewish Medical Center New Hyde Park, New York, USA
| | - Daniel A. Grande
- Orthopaedic Research Laboratory, The Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY 11030 USA
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York, USA
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32
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Abstract
The larynx sometimes requires repair and reconstruction due to cancer resection, trauma, stenosis, or developmental disruptions. Bioengineering has provided some scaffolding materials and initial attempts at tissue engineering, especially of the trachea, have been made. The critical issues of providing protection, maintaining a patent airway, and controlling swallowing and phonation, require that the regenerated laryngotracheal cartilages must have mechanical and material properties that closely mimic native tissue. These properties are determined by the cellular and proteomic characteristics of these tissues. However, little is known of these properties for these specific cartilages. This review considers what is known and what issues need to be addressed.
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Affiliation(s)
- Christine M. Pauken
- Head and Neck Regeneration Program, Mayo Clinic Center for Regenerative Medicine, Mayo Clinic, Phoenix, AZ, USA
| | - Richard Heyes
- Head and Neck Regeneration Program, Mayo Clinic Center for Regenerative Medicine, Mayo Clinic, Phoenix, AZ, USA
| | - David G. Lott
- Head and Neck Regeneration Program, Mayo Clinic Center for Regenerative Medicine, Mayo Clinic, Phoenix, AZ, USA,David G. Lott, Head and Neck Regeneration Program, Mayo Clinic Center for Regenerative Medicine, 5777 East Mayo Boulevard, Phoenix, AZ 85054, USA.
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33
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Elliott MJ, Butler CR, Varanou-Jenkins A, Partington L, Carvalho C, Samuel E, Crowley C, Lange P, Hamilton NJ, Hynds RE, Ansari T, Sibbons P, Fierens A, McLaren C, Roebuck D, Wallis C, Muthialu N, Hewitt R, Crabbe D, Janes SM, De Coppi P, Lowdell MW, Birchall MA. Tracheal Replacement Therapy with a Stem Cell-Seeded Graft: Lessons from Compassionate Use Application of a GMP-Compliant Tissue-Engineered Medicine. Stem Cells Transl Med 2019; 6:1458-1464. [PMID: 28544662 PMCID: PMC5689750 DOI: 10.1002/sctm.16-0443] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 03/03/2017] [Indexed: 12/15/2022] Open
Abstract
Tracheal replacement for the treatment of end‐stage airway disease remains an elusive goal. The use of tissue‐engineered tracheae in compassionate use cases suggests that such an approach is a viable option. Here, a stem cell‐seeded, decellularized tissue‐engineered tracheal graft was used on a compassionate basis for a girl with critical tracheal stenosis after conventional reconstructive techniques failed. The graft represents the first cell‐seeded tracheal graft manufactured to full good manufacturing practice (GMP) standards. We report important preclinical and clinical data from the case, which ended in the death of the recipient. Early results were encouraging, but an acute event, hypothesized to be an intrathoracic bleed, caused sudden airway obstruction 3 weeks post‐transplantation, resulting in her death. We detail the clinical events and identify areas of priority to improve future grafts. In particular, we advocate the use of stents during the first few months post‐implantation. The negative outcome of this case highlights the inherent difficulties in clinical translation where preclinical in vivo models cannot replicate complex clinical scenarios that are encountered. The practical difficulties in delivering GMP grafts underscore the need to refine protocols for phase I clinical trials. Stem Cells Translational Medicine2017;6:1458–1464
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Affiliation(s)
- Martin J Elliott
- Tracheal Team, Great Ormond Street Children's Hospital, London, United Kingdom
| | - Colin R Butler
- Tracheal Team, Great Ormond Street Children's Hospital, London, United Kingdom.,Lungs for Living Research Centre, UCL Respiratory, University College London, United Kingdom
| | | | - Leanne Partington
- Centre for Cell, Gene & Tissue Therapeutics, Royal Free Hospital & UCL, London, United Kingdom
| | - Carla Carvalho
- Centre for Cell, Gene & Tissue Therapeutics, Royal Free Hospital & UCL, London, United Kingdom
| | - Edward Samuel
- Centre for Cell, Gene & Tissue Therapeutics, Royal Free Hospital & UCL, London, United Kingdom
| | - Claire Crowley
- Department of Paediatric Surgery, Great Ormond Street Children's Hospital and UCL Institute of Child Health, London, United Kingdom
| | - Peggy Lange
- Department of Surgical Research, Northwick Park Institute of Medical Research, Northwick Park Hospital, Harrow, United Kingdom
| | - Nicholas J Hamilton
- Lungs for Living Research Centre, UCL Respiratory, University College London, United Kingdom
| | - Robert E Hynds
- Lungs for Living Research Centre, UCL Respiratory, University College London, United Kingdom
| | - Tahera Ansari
- Department of Surgical Research, Northwick Park Institute of Medical Research, Northwick Park Hospital, Harrow, United Kingdom
| | - Paul Sibbons
- Department of Surgical Research, Northwick Park Institute of Medical Research, Northwick Park Hospital, Harrow, United Kingdom
| | - Anja Fierens
- Tracheal Team, Great Ormond Street Children's Hospital, London, United Kingdom
| | - Claire McLaren
- Department of Interventional Radiology, Great Ormond Street Children's Hospital and UCL Institute of Child Health, London, United Kingdom
| | - Derek Roebuck
- Department of Interventional Radiology, Great Ormond Street Children's Hospital and UCL Institute of Child Health, London, United Kingdom
| | - Colin Wallis
- Department of Respiratory Medicine, Great Ormond Street Children's Hospital and UCL Institute of Child Health, London, United Kingdom
| | - Nagarajan Muthialu
- Tracheal Team, Great Ormond Street Children's Hospital, London, United Kingdom
| | - Richard Hewitt
- Tracheal Team, Great Ormond Street Children's Hospital, London, United Kingdom
| | - David Crabbe
- Department of Paediatric Surgery, Leeds General Infirmary, Leeds, United Kingdom
| | - Sam M Janes
- Lungs for Living Research Centre, UCL Respiratory, University College London, United Kingdom
| | - Paolo De Coppi
- Department of Paediatric Surgery, Great Ormond Street Children's Hospital and UCL Institute of Child Health, London, United Kingdom
| | - Mark W Lowdell
- Centre for Cell, Gene & Tissue Therapeutics, Royal Free Hospital & UCL, London, United Kingdom
| | - Martin A Birchall
- UCL Ear Institute and The Royal National Throat Nose and Ear Hospital, London, United Kingdom
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34
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Zhong Y, Yang W, Yin Pan Z, Pan S, Zhang SQ, Hao Wang Z, Gu S, Shi H. In vivo transplantation of stem cells with a genipin linked scaffold for tracheal construction. J Biomater Appl 2019; 34:47-60. [DOI: 10.1177/0885328219839193] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yi Zhong
- Department of Cardiothoracic Surgery, Clinical medical college of Yangzhou University, Yangzhou, China
- Medical College of Yangzhou University, 11 Huaihai Road, Yangzhou, Jiangsu Province, China
- Key Laboratory of Integrative Medicine in Geriatrics Control of Jiangsu Province, Yangzhou University, Yangzhou, China
- Center of Translational Medicine, Yangzhou University, Yangzhou, China
| | - Wenlong Yang
- Department of Cardiothoracic Surgery, Clinical medical college of Yangzhou University, Yangzhou, China
- Medical College of Yangzhou University, 11 Huaihai Road, Yangzhou, Jiangsu Province, China
- Key Laboratory of Integrative Medicine in Geriatrics Control of Jiangsu Province, Yangzhou University, Yangzhou, China
- Center of Translational Medicine, Yangzhou University, Yangzhou, China
| | - Zi Yin Pan
- Department of Cardiothoracic Surgery, Clinical medical college of Yangzhou University, Yangzhou, China
- Medical College of Yangzhou University, 11 Huaihai Road, Yangzhou, Jiangsu Province, China
- Key Laboratory of Integrative Medicine in Geriatrics Control of Jiangsu Province, Yangzhou University, Yangzhou, China
- Center of Translational Medicine, Yangzhou University, Yangzhou, China
| | - Shu Pan
- Department of Cardiothoracic Surgery, Clinical medical college of Yangzhou University, Yangzhou, China
- Key Laboratory of Integrative Medicine in Geriatrics Control of Jiangsu Province, Yangzhou University, Yangzhou, China
- Center of Translational Medicine, Yangzhou University, Yangzhou, China
| | - Si Quan Zhang
- Department of Cardiothoracic Surgery, Clinical medical college of Yangzhou University, Yangzhou, China
- Key Laboratory of Integrative Medicine in Geriatrics Control of Jiangsu Province, Yangzhou University, Yangzhou, China
- Center of Translational Medicine, Yangzhou University, Yangzhou, China
| | - Zhi Hao Wang
- Department of Cardiothoracic Surgery, Clinical medical college of Yangzhou University, Yangzhou, China
- Medical College of Yangzhou University, 11 Huaihai Road, Yangzhou, Jiangsu Province, China
- Key Laboratory of Integrative Medicine in Geriatrics Control of Jiangsu Province, Yangzhou University, Yangzhou, China
- Center of Translational Medicine, Yangzhou University, Yangzhou, China
| | - Sijia Gu
- Medical College of Yangzhou University, 11 Huaihai Road, Yangzhou, Jiangsu Province, China
| | - Hongcan Shi
- Department of Cardiothoracic Surgery, Clinical medical college of Yangzhou University, Yangzhou, China
- Medical College of Yangzhou University, 11 Huaihai Road, Yangzhou, Jiangsu Province, China
- Key Laboratory of Integrative Medicine in Geriatrics Control of Jiangsu Province, Yangzhou University, Yangzhou, China
- Center of Translational Medicine, Yangzhou University, Yangzhou, China
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35
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Differential epithelial growth in tissue-engineered larynx and trachea generated from postnatal and fetal progenitor cells. Biochem Biophys Res Commun 2019; 510:205-210. [PMID: 30691694 DOI: 10.1016/j.bbrc.2019.01.060] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Accepted: 01/11/2019] [Indexed: 01/19/2023]
Abstract
Postnatal organ-specific stem and progenitor cells are an attractive potential donor cell for tissue-engineering because they can be harvested autologous from the recipient and have sufficient potential to regenerate the tissue of interest with less risk for ectopic growth or tumor formation compared to donor cells from embryonic or fetal sources. We describe the generation of tissue-engineered larynx and trachea (TELT) from human and mouse postnatal organoid units (OU) as well as from human fetal OU. Mouse TELT contained differentiated respiratory epithelium lining large lumens, cartilage and smooth muscle. In contrast, human postnatal TE trachea, formed small epithelial lumens with rare differentiation, in addition to smooth muscle and cartilage. Human fetal TELT contained the largest epithelial lumens with all differentiated cell types as well as smooth muscle and cartilage. Increased epithelial cytokeratin 14 was identified in both human fetal and postnatal TELT compared to native trachea, consistent with regenerative basal cells. Cilia in TELT epithelium also demonstrated function with beating movements. While both human postnatal and fetal progenitors have the potential to generate TELT, there is more epithelial growth and differentiation from fetal progenitors, highlighting fundamental differences in these cell populations.
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36
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Hong P, Bezuhly M, Graham ME, Gratzer PF. Efficient decellularization of rabbit trachea to generate a tissue engineering scaffold biomatrix. Int J Pediatr Otorhinolaryngol 2018; 112:67-74. [PMID: 30055743 DOI: 10.1016/j.ijporl.2018.06.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 06/15/2018] [Accepted: 06/15/2018] [Indexed: 12/20/2022]
Abstract
OBJECTIVES Most tracheal decellularization protocols are lengthy and can lead to reduced biomechanical stability. The objectives of this study were: 1) to generate a tracheal extracellular matrix scaffold using an efficient decellularization process and 2) to characterize the decellularized scaffold to assess its suitability for tissue engineering applications. METHODS Twelve rabbit tracheae underwent a decellularization process that involved enzymatic-detergent treatments. For characterization, fresh (control) and decellularized tissues underwent histological, immunohistochemical, and biochemical analyses. Tensile testing, scanning electron microscopy, and biocompatibility assay were also conducted. RESULTS Post-decellularization, the tracheal tissue had significantly less genetic material while the structural integrity was maintained. Specifically, the deoxyribonucleic acid content was significantly reduced and the glycosaminoglycan content was unchanged. Cell and cellular components were largely removed; at the same time the tensile properties and surface ultrastructural characteristics were unaltered. Biocompatibility was confirmed by contact cytotoxicity assay. CONCLUSIONS Overall, an efficient decellularization process was used to treat rabbit tracheal tissue. The effectiveness of the decellularization process was demonstrated and at the same time there was preservation of the underlying extracellular matrix structure. This decellularized material may serve as a potential scaffold for tracheal tissue engineering.
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Affiliation(s)
- Paul Hong
- IWK Health Centre, Department of Surgery, Halifax, Nova Scotia, Canada; Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, Dalhousie University, Halifax, Nova Scotia, Canada.
| | - Michael Bezuhly
- IWK Health Centre, Department of Surgery, Halifax, Nova Scotia, Canada; Division of Plastic and Reconstructive Surgery, Department of Surgery, Dalhousie University, Halifax, Nova Scotia, Canada
| | - M Elise Graham
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Paul F Gratzer
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, Dalhousie University, Halifax, Nova Scotia, Canada; School of Biomedical Engineering, Dalhousie University, Halifax, Nova Scotia, Canada
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De Santis MM, Bölükbas DA, Lindstedt S, Wagner DE. How to build a lung: latest advances and emerging themes in lung bioengineering. Eur Respir J 2018; 52:13993003.01355-2016. [PMID: 29903859 DOI: 10.1183/13993003.01355-2016] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Accepted: 05/30/2018] [Indexed: 12/19/2022]
Abstract
Chronic respiratory diseases remain a major cause of morbidity and mortality worldwide. The only option at end-stage disease is lung transplantation, but there are not enough donor lungs to meet clinical demand. Alternative options to increase tissue availability for lung transplantation are urgently required to close the gap on this unmet clinical need. A growing number of tissue engineering approaches are exploring the potential to generate lung tissue ex vivo for transplantation. Both biologically derived and manufactured scaffolds seeded with cells and grown ex vivo have been explored in pre-clinical studies, with the eventual goal of generating functional pulmonary tissue for transplantation. Recently, there have been significant efforts to scale-up cell culture methods to generate adequate cell numbers for human-scale bioengineering approaches. Concomitantly, there have been exciting efforts in designing bioreactors that allow for appropriate cell seeding and development of functional lung tissue over time. This review aims to present the current state-of-the-art progress for each of these areas and to discuss promising new ideas within the field of lung bioengineering.
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Affiliation(s)
- Martina M De Santis
- Lung Bioengineering and Regeneration, Dept of Experimental Medical Sciences, Lund University, Lund, Sweden.,Lung Repair and Regeneration (LRR), Comprehensive Pneumology Center (CPC), Helmholtz Zentrum Munich, Member of the German Center for Lung Research (DZL), Munich, Germany.,Stem Cell Centre, Lund University, Lund, Sweden.,Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden
| | - Deniz A Bölükbas
- Lung Bioengineering and Regeneration, Dept of Experimental Medical Sciences, Lund University, Lund, Sweden.,Stem Cell Centre, Lund University, Lund, Sweden.,Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden
| | - Sandra Lindstedt
- Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden.,Dept of Cardiothoracic Surgery, Heart and Lung Transplantation, Lund University Hospital, Lund, Sweden
| | - Darcy E Wagner
- Lung Bioengineering and Regeneration, Dept of Experimental Medical Sciences, Lund University, Lund, Sweden .,Lung Repair and Regeneration (LRR), Comprehensive Pneumology Center (CPC), Helmholtz Zentrum Munich, Member of the German Center for Lung Research (DZL), Munich, Germany.,Stem Cell Centre, Lund University, Lund, Sweden.,Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden
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Evaluation of Immunosuppressive Therapy Use for Tracheal Transplantation with Trachea-Mimetic Bellows Scaffolds in a Rabbit Model. BIOMED RESEARCH INTERNATIONAL 2017; 2017:5205476. [PMID: 29226141 PMCID: PMC5684528 DOI: 10.1155/2017/5205476] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 09/10/2017] [Indexed: 11/28/2022]
Abstract
The objective of this study was to evaluate the use of immunosuppressive therapy with high-dose cyclosporine, high-dose azathioprine, and a combination of low-dose cyclosporine and azathioprine after tracheal reconstruction by using a trachea-mimetic graft of polycaprolactone (PCL) bellows-type scaffold in a rabbit model. Twenty-four healthy New Zealand white rabbits were used in the study. All underwent circumferential tracheal replacement using tissue-engineered tracheal graft, prepared from PCL bellows scaffold reinforced with silicone ring, collagen hydrogel, and human turbinate mesenchymal stromal cell (hTMSC) sheets. The control group (Group 1) received no medication. The three experimental groups were given daily cyclosporine intramuscular doses of 10 mg/kg (Group 2), azathioprine oral doses of 5 mg/kg (Group 3), and azathioprine oral doses of 2.5 mg/kg plus cyclosporine intramuscular doses of 5 mg/kg (Group 4) for 4 weeks or until death. Group 1 had longer survival times compared to Group 2 or Group 3. Each group except for Group 1 experienced decreases in amount of nutrition and weight loss. In addition, compared with the other groups, Group 2 had significantly increased serum interleukin-2 and interferon-γ levels 7 days after transplantation. The results of this study showed that the administration of cyclosporine and/or azathioprine after tracheal transplantation had no beneficial effects. Furthermore, the administration of cyclosporine had side effects, including extreme weight loss, respiratory distress, and diarrhea. Therefore, cyclosporine and azathioprine avoidance may be recommended for tracheal reconstruction using a native trachea-mimetic graft of PCL bellows-type scaffold in a rabbit model.
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Abstract
Purpose of Review There is no consensus on the best technology to be employed for tracheal replacement. One particularly promising approach is based upon tissue engineering and involves applying autologous cells to transplantable scaffolds. Here, we present the reported pre-clinical and clinical data exploring the various options for achieving such seeding. Recent Findings Various cell combinations, delivery strategies, and outcome measures are described. Mesenchymal stem cells (MSCs) are the most widely employed cell type in tracheal bioengineering. Airway epithelial cell luminal seeding is also widely employed, alone or in combination with other cell types. Combinations have thus far shown the greatest promise. Chondrocytes may improve mechanical outcomes in pre-clinical models, but have not been clinically tested. Rapid or pre-vascularization of scaffolds is an important consideration. Overall, there are few published objective measures of post-seeding cell viability, survival, or overall efficacy. Summary There is no clear consensus on the optimal cell-scaffold combination and mechanisms for seeding. Systematic in vivo work is required to assess differences between tracheal grafts seeded with combinations of clinically deliverable cell types using objective outcome measures, including those for functionality and host immune response. Electronic supplementary material The online version of this article (10.1007/s40778-017-0108-2) contains supplementary material, which is available to authorized users.
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Reconstruction of a Long-Segment Tracheal Defect Using an AlloDerm Conduit. INNOVATIONS-TECHNOLOGY AND TECHNIQUES IN CARDIOTHORACIC AND VASCULAR SURGERY 2017; 12:137-139. [PMID: 28301367 DOI: 10.1097/imi.0000000000000347] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This case describes successful reconstruction of a long-segment tracheal defect using AlloDerm as the conduit for reconstruction. A 38-year-old woman who had undergone a thyroid lobectomy in 2011 presented several months later unable to swallow. Chest computed tomography results revealed a tracheal/esophageal mass and a subsequent bronchoscopy, and esophagogastroduodenoscopy results revealed an upper esophageal/tracheal mass with two areas concerning for fistula. She underwent a bronchoscopy with a tracheal stent and percutaneous endoscopic gastrostomy placement. All biopsies were nondiagnostic for malignancy and the patient recovered well. After a repeat bronchoscopy and esophagogastroduodenoscopy a few months later, she underwent a diagnostic right video-assisted thoracoscopic surgery and thoracotomy. To obtain adequate tissue for diagnosis, the fistula was opened, resulting in a large defect in the esophagus and trachea, as portions of the trachea, esophagus, and right recurrent laryngeal nerve liquefied. A 7-cm portion of her esophagus, 8 cm of the posterior trachea, and 5 cm of the right trachea wall were removed. The pathology came back as Hodgkin lymphoma. Because of the size of the esophageal defect, reconstruction was not an option. Therefore, the remainder of the esophagus was resected, the stomach stapled off, and esophageal hiatus closed. The tracheal defect was also too large for patch repair and was reconstructed with a tube of AlloDerm (6 × 10 cm). Four years after reconstruction, the patient is disease free and living a normal life. This case demonstrates successful tracheal reconstruction with AlloDerm.
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Gowers KHC, Hynds RE, Thakrar RM, Carroll B, Birchall MA, Janes SM. Optimized isolation and expansion of human airway epithelial basal cells from endobronchial biopsy samples. J Tissue Eng Regen Med 2017; 12:e313-e317. [PMID: 28488809 PMCID: PMC5811901 DOI: 10.1002/term.2466] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 04/12/2017] [Accepted: 05/04/2017] [Indexed: 01/15/2023]
Abstract
Autologous airway epithelial cells have been used in clinical tissue‐engineered airway transplantation procedures with a view to assisting mucosal regeneration and restoring mucociliary escalator function. However, limited time is available for epithelial cell expansion due to the urgent nature of these interventions and slow epithelial regeneration has been observed in patients. Human airway epithelial cells can be expanded from small biopsies or brushings taken during bronchoscopy procedures, but the optimal mode of tissue acquisition from patients has not been investigated. Here, we compared endobronchial brushing and endobronchial biopsy samples in terms of their cell number and their ability to initiate basal epithelial stem cell cultures. We found that direct co‐culture of samples with 3T3‐J2 feeder cells in culture medium containing a Rho‐associated protein kinase inhibitor, Y‐27632, led to the selective expansion of greater numbers of basal epithelial stem cells during the critical early stages of culture than traditional techniques. Additionally, we established the benefit of initiating cell cultures from cell suspensions, either using brushing samples or through enzymatic digestion of biopsies, over explant culture. Primary epithelial cell cultures were initiated from endobronchial biopsy samples that had been cryopreserved before the initiation of cell cultures, suggesting that cryopreservation could eliminate the requirement for close proximity between the clinical facility in which biopsy samples are taken and the specialist laboratory in which epithelial cells are cultured. Overall, our results suggest ways to expedite epithelial cell preparation in future airway cell therapy or bioengineered airway transplantation procedures.
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Affiliation(s)
- Kate H C Gowers
- Lungs for Living Research Centre, UCL Respiratory, University College London, London, UK
| | - Robert E Hynds
- Lungs for Living Research Centre, UCL Respiratory, University College London, London, UK
| | - Ricky M Thakrar
- Lungs for Living Research Centre, UCL Respiratory, University College London, London, UK.,Department of Thoracic Medicine, University College Hospital, London, UK
| | - Bernadette Carroll
- Lungs for Living Research Centre, UCL Respiratory, University College London, London, UK.,Department of Thoracic Medicine, University College Hospital, London, UK
| | - Martin A Birchall
- The Royal National Throat Nose and Ear Hospital, UCL Ear Institute, London, UK
| | - Sam M Janes
- Lungs for Living Research Centre, UCL Respiratory, University College London, London, UK.,Department of Thoracic Medicine, University College Hospital, London, UK
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Morphological Analysis of Biocompatibility of Autologous Bone Marrow Mononuclear Cells with Synthetic Polyethylene Terephthalate Scaffold. Bull Exp Biol Med 2017; 163:400-404. [PMID: 28748482 DOI: 10.1007/s10517-017-3813-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Indexed: 10/19/2022]
Abstract
We studied the properties of a tissue-engineered trachea consisting of a polyethylene terephthalate scaffold populated with autologous bone marrow mononuclear cells. The tissue-engineered constructs were obtained before surgery, during the postoperative period, and during autopsy. Cytomorphological analysis during the postoperative period showed the presence of mesenchymal stem cells on the inner surface of the implant on day 3 after surgery and cells of the respiratory epithelium on day 10-14. In autopsy samples, single epithelial cells, endothelial cells, and basal cells were found. Biocompatibility of the tissue-engineered trachea with autologous mononuclear cells of the patient was demonstrated.
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Butler CR, Hynds RE, Gowers KHC, Lee DDH, Brown JM, Crowley C, Teixeira VH, Smith CM, Urbani L, Hamilton NJ, Thakrar RM, Booth HL, Birchall MA, De Coppi P, Giangreco A, O'Callaghan C, Janes SM. Rapid Expansion of Human Epithelial Stem Cells Suitable for Airway Tissue Engineering. Am J Respir Crit Care Med 2017; 194:156-68. [PMID: 26840431 DOI: 10.1164/rccm.201507-1414oc] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
RATIONALE Stem cell-based tracheal replacement represents an emerging therapeutic option for patients with otherwise untreatable airway diseases including long-segment congenital tracheal stenosis and upper airway tumors. Clinical experience demonstrates that restoration of mucociliary clearance in the lungs after transplantation of tissue-engineered grafts is critical, with preclinical studies showing that seeding scaffolds with autologous mucosa improves regeneration. High epithelial cell-seeding densities are required in regenerative medicine, and existing techniques are inadequate to achieve coverage of clinically suitable grafts. OBJECTIVES To define a scalable cell culture system to deliver airway epithelium to clinical grafts. METHODS Human respiratory epithelial cells derived from endobronchial biopsies were cultured using a combination of mitotically inactivated fibroblasts and Rho-associated protein kinase (ROCK) inhibition using Y-27632 (3T3+Y). Cells were analyzed by immunofluorescence, quantitative polymerase chain reaction, and flow cytometry to assess airway stem cell marker expression. Karyotyping and multiplex ligation-dependent probe amplification were performed to assess cell safety. Differentiation capacity was tested in three-dimensional tracheospheres, organotypic cultures, air-liquid interface cultures, and an in vivo tracheal xenograft model. Ciliary function was assessed in air-liquid interface cultures. MEASUREMENTS AND MAIN RESULTS 3T3-J2 feeder cells and ROCK inhibition allowed rapid expansion of airway basal cells. These cells were capable of multipotent differentiation in vitro, generating both ciliated and goblet cell lineages. Cilia were functional with normal beat frequency and pattern. Cultured cells repopulated tracheal scaffolds in a heterotopic transplantation xenograft model. CONCLUSIONS Our method generates large numbers of functional airway basal epithelial cells with the efficiency demanded by clinical transplantation, suggesting its suitability for use in tracheal reconstruction.
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Affiliation(s)
- Colin R Butler
- 1 Lungs for Living Research Centre, UCL Respiratory, University College London, London, United Kingdom
| | - Robert E Hynds
- 1 Lungs for Living Research Centre, UCL Respiratory, University College London, London, United Kingdom
| | - Kate H C Gowers
- 1 Lungs for Living Research Centre, UCL Respiratory, University College London, London, United Kingdom
| | - Dani Do Hyang Lee
- 2 Respiratory, Critical Care, and Anesthesia, Institute of Child Health, University College London, London, United Kingdom
| | - James M Brown
- 1 Lungs for Living Research Centre, UCL Respiratory, University College London, London, United Kingdom
| | - Claire Crowley
- 3 Stem Cell and Regenerative Medicine Section, Great Ormond Street Hospital and UCL Institute of Child Health, London, United Kingdom
| | - Vitor H Teixeira
- 1 Lungs for Living Research Centre, UCL Respiratory, University College London, London, United Kingdom
| | - Claire M Smith
- 2 Respiratory, Critical Care, and Anesthesia, Institute of Child Health, University College London, London, United Kingdom
| | - Luca Urbani
- 3 Stem Cell and Regenerative Medicine Section, Great Ormond Street Hospital and UCL Institute of Child Health, London, United Kingdom
| | - Nicholas J Hamilton
- 1 Lungs for Living Research Centre, UCL Respiratory, University College London, London, United Kingdom
| | - Ricky M Thakrar
- 1 Lungs for Living Research Centre, UCL Respiratory, University College London, London, United Kingdom
| | - Helen L Booth
- 4 Department of Thoracic Medicine, University College London Hospitals, London, United Kingdom; and
| | - Martin A Birchall
- 5 UCL Ear Institute, Royal National Throat, Nose and Ear Hospital, London, United Kingdom
| | - Paolo De Coppi
- 3 Stem Cell and Regenerative Medicine Section, Great Ormond Street Hospital and UCL Institute of Child Health, London, United Kingdom
| | - Adam Giangreco
- 1 Lungs for Living Research Centre, UCL Respiratory, University College London, London, United Kingdom
| | - Christopher O'Callaghan
- 2 Respiratory, Critical Care, and Anesthesia, Institute of Child Health, University College London, London, United Kingdom
| | - Sam M Janes
- 1 Lungs for Living Research Centre, UCL Respiratory, University College London, London, United Kingdom.,4 Department of Thoracic Medicine, University College London Hospitals, London, United Kingdom; and
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Bhora FY, Lewis EE, Rehmani SS, Ayub A, Raad W, Al-Ayoubi AM, Lebovics RS. Circumferential Three-Dimensional-Printed Tracheal Grafts: Research Model Feasibility and Early Results. Ann Thorac Surg 2017; 104:958-963. [PMID: 28619543 DOI: 10.1016/j.athoracsur.2017.03.064] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 03/14/2017] [Accepted: 03/27/2017] [Indexed: 02/05/2023]
Abstract
BACKGROUND Methods for tracheal graft research have presented persistent challenges to investigators, and three-dimensional (3D)-printed biosynthetic grafts offer one potential development platform. We aimed to develop an efficient research platform for customizable circumferential 3D-printed tracheal grafts and evaluate feasibility and early structural integrity with a large-animal model. METHODS Virtual 3D models of porcine subject tracheas were generated using preoperative computed tomography scans. Two designs were used to test graft customizability and the limits of the construction process. Designs I and II used 270-degree and 360-degree external polycaprolactone scaffolds, respectively, both encompassing a circumferential extracellular matrix collagen layer. The polycaprolactone scaffolds were made in a fused-deposition modeling 3D printer and customized to the recipient's anatomy. Design I was implanted in 3 pigs and design II in 2 pigs, replacing 4-ring tracheal segments. Data collected included details of graft construction, clinical outcomes, bronchoscopy, and gross and histologic examination. RESULTS The 3D-printed biosynthetic grafts were produced with high fidelity to the native organ. The fabrication process took 36 hours. Grafts were implanted without immediate complication. Bronchoscopy immediately postoperatively and at 1 week demonstrated patent grafts and appropriate healing. All animals lived beyond a predetermined 1-week survival period. Bronchoscopy at 2 weeks showed significant paraanastomotic granulation tissue, which, along with partial paraanastomotic epithelialization, was confirmed on pathology. Overall survival was 17 to 34 days. CONCLUSIONS We propose a rapid, reproducible, resource efficient method to develop various anatomically precise grafts. Further graft refinement and strategies for granulation tissue management are needed to improve outcomes.
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Affiliation(s)
- Faiz Y Bhora
- Department of Thoracic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York.
| | - Erik E Lewis
- Department of Thoracic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Sadiq S Rehmani
- Department of Thoracic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Adil Ayub
- Department of Thoracic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Wissam Raad
- Department of Thoracic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Adnan M Al-Ayoubi
- Department of Thoracic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Robert S Lebovics
- Department of Otolaryngology, Mount Sinai West, Mount Sinai Health System, New York, New York
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Elliott MJ, Butler CR, Varanou-Jenkins A, Partington L, Carvalho C, Samuel E, Crowley C, Lange P, Hamilton NJ, Hynds RE, Ansari T, Sibbons P, Fierens A, McLaren C, Roebuck D, Wallis C, Muthialu N, Hewitt R, Crabbe D, Janes SM, De Coppi P, Lowdell MW, Birchall MA. Tracheal Replacement Therapy with a Stem Cell-Seeded Graft: Lessons from Compassionate Use Application of a GMP-Compliant Tissue-Engineered Medicine. Stem Cells Transl Med 2017. [PMID: 28544662 DOI: 10.1002/sctm.16-0443.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Tracheal replacement for the treatment of end-stage airway disease remains an elusive goal. The use of tissue-engineered tracheae in compassionate use cases suggests that such an approach is a viable option. Here, a stem cell-seeded, decellularized tissue-engineered tracheal graft was used on a compassionate basis for a girl with critical tracheal stenosis after conventional reconstructive techniques failed. The graft represents the first cell-seeded tracheal graft manufactured to full good manufacturing practice (GMP) standards. We report important preclinical and clinical data from the case, which ended in the death of the recipient. Early results were encouraging, but an acute event, hypothesized to be an intrathoracic bleed, caused sudden airway obstruction 3 weeks post-transplantation, resulting in her death. We detail the clinical events and identify areas of priority to improve future grafts. In particular, we advocate the use of stents during the first few months post-implantation. The negative outcome of this case highlights the inherent difficulties in clinical translation where preclinical in vivo models cannot replicate complex clinical scenarios that are encountered. The practical difficulties in delivering GMP grafts underscore the need to refine protocols for phase I clinical trials. Stem Cells Translational Medicine 2017;6:1458-1464.
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Affiliation(s)
- Martin J Elliott
- Tracheal Team, Great Ormond Street Children's Hospital, London, United Kingdom
| | - Colin R Butler
- Tracheal Team, Great Ormond Street Children's Hospital, London, United Kingdom.,Lungs for Living Research Centre, UCL Respiratory, University College London, United Kingdom
| | | | - Leanne Partington
- Centre for Cell, Gene & Tissue Therapeutics, Royal Free Hospital & UCL, London, United Kingdom
| | - Carla Carvalho
- Centre for Cell, Gene & Tissue Therapeutics, Royal Free Hospital & UCL, London, United Kingdom
| | - Edward Samuel
- Centre for Cell, Gene & Tissue Therapeutics, Royal Free Hospital & UCL, London, United Kingdom
| | - Claire Crowley
- Department of Paediatric Surgery, Great Ormond Street Children's Hospital and UCL Institute of Child Health, London, United Kingdom
| | - Peggy Lange
- Department of Surgical Research, Northwick Park Institute of Medical Research, Northwick Park Hospital, Harrow, United Kingdom
| | - Nicholas J Hamilton
- Lungs for Living Research Centre, UCL Respiratory, University College London, United Kingdom
| | - Robert E Hynds
- Lungs for Living Research Centre, UCL Respiratory, University College London, United Kingdom
| | - Tahera Ansari
- Department of Surgical Research, Northwick Park Institute of Medical Research, Northwick Park Hospital, Harrow, United Kingdom
| | - Paul Sibbons
- Department of Surgical Research, Northwick Park Institute of Medical Research, Northwick Park Hospital, Harrow, United Kingdom
| | - Anja Fierens
- Tracheal Team, Great Ormond Street Children's Hospital, London, United Kingdom
| | - Claire McLaren
- Department of Interventional Radiology, Great Ormond Street Children's Hospital and UCL Institute of Child Health, London, United Kingdom
| | - Derek Roebuck
- Department of Interventional Radiology, Great Ormond Street Children's Hospital and UCL Institute of Child Health, London, United Kingdom
| | - Colin Wallis
- Department of Respiratory Medicine, Great Ormond Street Children's Hospital and UCL Institute of Child Health, London, United Kingdom
| | - Nagarajan Muthialu
- Tracheal Team, Great Ormond Street Children's Hospital, London, United Kingdom
| | - Richard Hewitt
- Tracheal Team, Great Ormond Street Children's Hospital, London, United Kingdom
| | - David Crabbe
- Department of Paediatric Surgery, Leeds General Infirmary, Leeds, United Kingdom
| | - Sam M Janes
- Lungs for Living Research Centre, UCL Respiratory, University College London, United Kingdom
| | - Paolo De Coppi
- Department of Paediatric Surgery, Great Ormond Street Children's Hospital and UCL Institute of Child Health, London, United Kingdom
| | - Mark W Lowdell
- Centre for Cell, Gene & Tissue Therapeutics, Royal Free Hospital & UCL, London, United Kingdom
| | - Martin A Birchall
- UCL Ear Institute and The Royal National Throat Nose and Ear Hospital, London, United Kingdom
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Wiggenhauser PS, Schantz JT, Rotter N. Cartilage engineering in reconstructive surgery: auricular, nasal and tracheal engineering from a surgical perspective. Regen Med 2017; 12:303-314. [PMID: 28524733 DOI: 10.2217/rme-2016-0160] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
This review provides an update on cartilage tissue engineering with particular focus on the head and neck. It is aimed at scientists and clinicians who are interested in tissue engineering and its clinical applicability. Principal tissue engineering strategies are summarized in the first part of this review. In the second part, current clinical approaches to auricular, nasal and tracheal reconstruction are discussed from a surgical perspective. By this approach, the requirements for clinical applicability are outlined and new insight into relevant aims of research is given to accelerate the transfer from bench to bedside.
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Affiliation(s)
- Paul Severin Wiggenhauser
- sup>Department of Oto-Rhino-Laryngology, Head & Neck Surgery, Ulm University Medical Center, Frauensteige 12, Ulm DE 89075, Germany.,Department of Hand, Plastic & Aesthetic Surgery, Ludwig Maximilian University of Munich, Pettenkoferstrasse 8a, Munich DE 80336, Germany
| | - Jan Thorsten Schantz
- Department of Plastic Surgery & Hand Surgery, München rechts der Isar, Technical University of Munich, Ismaninger Str. 22, Munich DE 81675, Germany
| | - Nicole Rotter
- Department of Hand, Plastic & Aesthetic Surgery, Ludwig Maximilian University of Munich, Pettenkoferstrasse 8a, Munich DE 80336, Germany
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Alternating air-medium exposure in rotating bioreactors optimizes cell metabolism in 3D novel tubular scaffold polyurethane foams. J Appl Biomater Funct Mater 2017; 15:e122-e132. [PMID: 28362040 PMCID: PMC6379885 DOI: 10.5301/jabfm.5000334] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/07/2016] [Indexed: 01/15/2023] Open
Abstract
Background In vitro dynamic culture conditions play a pivotal role in developing
engineered tissue grafts, where the supply of oxygen and nutrients, and
waste removal must be permitted within construct thickness. For tubular
scaffolds, mass transfer is enhanced by introducing a convective flow
through rotating bioreactors with positive effects on cell proliferation,
scaffold colonization and extracellular matrix deposition. We characterized
a novel polyurethane-based tubular scaffold and investigated the impact of 3
different culture configurations over cell behavior: dynamic (i)
single-phase (medium) rotation and (ii) double-phase exposure (medium-air)
rotation; static (iii) single-phase static culture as control. Methods A new mixture of polyol was tested to create polyurethane foams (PUFs) as 3D
scaffold for tissue engineering. The structure obtained was morphologically
and mechanically analyzed tested. Murine fibroblasts were externally seeded
on the novel porous PUF scaffold, and cultured under different dynamic
conditions. Viability assay, DNA quantification, SEM and histological
analyses were performed at different time points. Results The PUF scaffold presented interesting mechanical properties and morphology
adequate to promote cell adhesion, highlighting its potential for tissue
engineering purposes. Results showed that constructs under dynamic
conditions contain enhanced viability and cell number, exponentially
increased for double-phase rotation; under this last configuration, cells
uniformly covered both the external surface and the lumen. Conclusions The developed 3D structure combined with the alternated exposure to air and
medium provided the optimal in vitro biochemical conditioning with adequate
nutrient supply for cells. The results highlight a valuable combination of
material and dynamic culture for tissue engineering applications.
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Bolton WD, Ben-Or S, Hale AL, Stephenson JE. Reconstruction of a Long-Segment Tracheal Defect using an Alloderm Conduit. INNOVATIONS-TECHNOLOGY AND TECHNIQUES IN CARDIOTHORACIC AND VASCULAR SURGERY 2017. [DOI: 10.1177/155698451701200210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- William D. Bolton
- From the Division of Thoracic Surgery, Department of Surgery, Greenville Health System, Greenville, SC USA
| | - Sharon Ben-Or
- From the Division of Thoracic Surgery, Department of Surgery, Greenville Health System, Greenville, SC USA
| | - Allyson L. Hale
- From the Division of Thoracic Surgery, Department of Surgery, Greenville Health System, Greenville, SC USA
| | - James E. Stephenson
- From the Division of Thoracic Surgery, Department of Surgery, Greenville Health System, Greenville, SC USA
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