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Sun H, Yang H, Yang M, Li Q, Xue W, Qi J. Follow-up and histocompatibility observation of urethral reconstruction with different materials. AMERICAN JOURNAL OF CLINICAL AND EXPERIMENTAL UROLOGY 2024; 12:36-45. [PMID: 38500866 PMCID: PMC10944369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 01/25/2024] [Indexed: 03/20/2024]
Abstract
OBJECTIVE Our objective is to observe the long-term surgical results of urethral reconstruction using either pedicled penile flaps or lingual mucosa grafts. We also assess the histocompatibility of the reconstructed urethra. MATERIALS AND METHODS Clinical data of patients with anterior urethral stenosis undergoing urethra reconstruction by applying different materials were collected from 2014 to 2022 in the Second Hospital of Hebei Medical University. We assessed their efficacy and the occurrence of complications. Patients who required reoperation due to complications were selected. Sections of the reconstructed urethra created with various materials were excised during repair procedures. The excised tissues underwent hematoxylin-eosin staining and immunohistochemistry. Comparison with the original histological morphology was conducted to evaluate histocompatibility. RESULTS 42 of the 55 patients were cured which showed a surgical success rate of 76.36%. The success rate of urethra reconstruction surgery utilizing lingual mucosa is 71.43% and that of surgeries using pedicled penis flaps is 79.41%. The long-term prognosis of the two groups is similar (P > 0.05). Observations show that the histological morphology of the original epithelium gradually disappeared, leading to adaptive changes to the urinary environment with favorable histocompatibility. CONCLUSION The application of lingual mucosal and pedicled penis flaps for urethral reconstruction both have a high surgical success rate. The long-term follow-up results are positive. Both methods are viable for urethral reconstruction and exhibit favorable histocompatibility.
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Affiliation(s)
- Hongtian Sun
- Department of Urology, The Second Hospital of Hebei Medical University No. 215, Heping West Road, Xinhua District, Shijiazhuang, Hebei, China
| | - Haoxuan Yang
- Department of Urology, The Second Hospital of Hebei Medical University No. 215, Heping West Road, Xinhua District, Shijiazhuang, Hebei, China
| | - Mingxuan Yang
- Department of Urology, The Second Hospital of Hebei Medical University No. 215, Heping West Road, Xinhua District, Shijiazhuang, Hebei, China
| | - Qian Li
- Department of Urology, The Second Hospital of Hebei Medical University No. 215, Heping West Road, Xinhua District, Shijiazhuang, Hebei, China
| | - Wenyong Xue
- Department of Urology, The Second Hospital of Hebei Medical University No. 215, Heping West Road, Xinhua District, Shijiazhuang, Hebei, China
| | - Jinchun Qi
- Department of Urology, The Second Hospital of Hebei Medical University No. 215, Heping West Road, Xinhua District, Shijiazhuang, Hebei, China
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2
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Sriram M, Priya S, Mahajan A, Katti DS. Directing ligament-mimetic bi-directional cell organization in scaffolds through zone-specific microarchitecture for ligament tissue engineering. Biofabrication 2024; 16:025015. [PMID: 38277689 DOI: 10.1088/1758-5090/ad22f2] [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: 10/13/2023] [Accepted: 01/26/2024] [Indexed: 01/28/2024]
Abstract
Ligament tissues exhibit zone-specific anisotropic cell organization. The cells in ligament-proper are longitudinally oriented, whereas, the cells in epiligament are circumferentially oriented. Therefore, scaffolds developed to regenerate ligament tissues should possess adequate architectural features to govern ligament-mimetic bi-directional cell organization. The scaffold architectural features along with ligament-mimetic cell organization may ultimately yield neo-tissues with ligament-like extracellular matrix (ECM) structure and biomechanical properties. Towards this goal, we fabricated a silk/gelatin-based core-shell scaffold (csSG) with zone-specific anisotropic architectural features, wherein, the core of the scaffold possessed longitudinally aligned pores while the shell of the scaffold possessed parallel microgrooves that are aligned circumferentially around the surface of the scaffold. The ligament-mimetic architectural features significantly improved the mechanical properties of the scaffold. Moreover, architectural features of the csSG scaffold governed zone-specific anisotropic organization of cells. The cells in the core were longitudinally oriented as observed in the ligament-proper and the cells on the shell were circumferentially oriented as observed in epiligament. This bi-directional cell orientation partially mimicked the complex cellular network in native ligament tissue. Additionally, both the core and the shell individually supported fibrogenic differentiation of stem cells which further improved their potential for ligament tissue engineering. Further, the aligned pores of the core could govern unidirectional organization of ECM deposited by cells which is crucial for regenerating anisotropic tissues like ligaments. Finally, when implanted subcutaneously in mice, the scaffolds retained their anisotropic architecture for at least 2 weeks, were biocompatible, supported cell infiltration and governed anisotropic organization of cells and ECM. Taken together, the fabricated biomimetic csSG scaffold, through its zone-specific architectural features, could govern ligament-mimetic cellular and ECM organization which is ultimately expected to achieve regeneration of ligament tissues with native-like hierarchical structure and biomechanical properties. Consequently, this study introduces bi-directional structural parameters as design criteria for developing scaffolds for ligament tissue engineering.
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Affiliation(s)
- M Sriram
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
- Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Smriti Priya
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Aman Mahajan
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
- Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Dhirendra S Katti
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
- Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
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3
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Huang LP, Liu Y, Li QJ, Zhang WQ, Wu CY, Zhao LM, Xie HQ. A Modified Small Intestinal Submucosa Patch with Multifunction to Promote Scarless Repair and Reinvigoration of Urethra. Adv Healthc Mater 2023; 12:e2300519. [PMID: 37062917 DOI: 10.1002/adhm.202300519] [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: 02/17/2023] [Revised: 03/28/2023] [Indexed: 04/18/2023]
Abstract
To reconstruct and restore the functions of the male urethra is a challenging task for urologists. The acellular matrix graft currently used in the clinics is mono-functional and may cause a series of complications including stricture, fibrosis, and stone formation. As a result, such graft materials cannot meet the increasing demand for multifunctionality in the field of urethral tissue engineering. In this context, a multifunctional urethral patch is designed for the repair of urethral defects by mixing protocatechualdehyde (PCA) with small intestinal submucosa (SIS) under an alkalin condition to allow cross linking. As shown, the PCA/SIS patch possesses excellent biocompatibility, antioxidant activity, and anti-inflammatory property. More importantly, this patch can remarkably promote the adhesion, proliferation, and directional extension of rabbit bladder epithelial mucous cells (R-EMCs) as well as rabbit bladder smooth muscle cells (R-SMCs), and upregulate the expression of cytokeratin in the EMCs and contractile protein in the SMCs in vitro. In vivo experiments also confirm that the PCA/SIS patch can significantly enhance scarless repair of urethral defects in rabbits by facilitating smooth muscle regeneration, reducing excessive collagen deposition, and accelerating re-epithelialization and neovascularization. Taken together, the newly developed multifunctional PCA/SIS patch provides a promising candidate for urethral regeneration.
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Affiliation(s)
- Li-Ping Huang
- Department of Orthopedics Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Yuan Liu
- Department of Orthopedics Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Qian-Jin Li
- Department of Orthopedics Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Wen-Qian Zhang
- Department of Orthopedics Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Chen-Yu Wu
- Department of Orthopedics Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Long-Mei Zhao
- Department of Orthopedics Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Hui-Qi Xie
- Department of Orthopedics Surgery and Orthopedic Research Institute, Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
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4
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Jin Y, Zhao W, Yang M, Fang W, Gao G, Wang Y, Fu Q. Cell-Based Therapy for Urethral Regeneration: A Narrative Review and Future Perspectives. Biomedicines 2023; 11:2366. [PMID: 37760808 PMCID: PMC10525510 DOI: 10.3390/biomedicines11092366] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 07/29/2023] [Accepted: 08/16/2023] [Indexed: 09/29/2023] Open
Abstract
Urethral stricture is a common urological disease that seriously affects quality of life. Urethroplasty with grafts is the primary treatment, but the autografts used in clinical practice have unavoidable disadvantages, which have contributed to the development of urethral tissue engineering. Using various types of seed cells in combination with biomaterials to construct a tissue-engineered urethra provides a new treatment method to repair long-segment urethral strictures. To date, various cell types have been explored and applied in the field of urethral regeneration. However, no optimal strategy for the source, selection, and application conditions of the cells is available. This review systematically summarizes the use of various cell types in urethral regeneration and their characteristics in recent years and discusses possible future directions of cell-based therapies.
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Affiliation(s)
- Yangwang Jin
- Department of Urology, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Eastern Institute of Urologic Reconstruction, Shanghai Jiao Tong University, Shanghai 200233, China; (Y.J.)
| | - Weixin Zhao
- Wake Forest Institute for Regenerative Medicine, Winston Salem, NC 27157, USA
| | - Ming Yang
- Department of Urology, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Eastern Institute of Urologic Reconstruction, Shanghai Jiao Tong University, Shanghai 200233, China; (Y.J.)
| | - Wenzhuo Fang
- Department of Urology, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Eastern Institute of Urologic Reconstruction, Shanghai Jiao Tong University, Shanghai 200233, China; (Y.J.)
| | - Guo Gao
- Key Laboratory for Thin Film and Micro Fabrication of the Ministry of Education, School of Sensing Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ying Wang
- Department of Urology, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Eastern Institute of Urologic Reconstruction, Shanghai Jiao Tong University, Shanghai 200233, China; (Y.J.)
| | - Qiang Fu
- Department of Urology, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Eastern Institute of Urologic Reconstruction, Shanghai Jiao Tong University, Shanghai 200233, China; (Y.J.)
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5
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McLoughlin S, McKenna AR, Fisher JP. Fabrication Strategies for Engineered Thin Membranous Tissues. ACS APPLIED BIO MATERIALS 2023. [PMID: 37314953 DOI: 10.1021/acsabm.3c00133] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Thin membranous tissues (TMTs) are anatomical structures consisting of multiple stratified cell layers, each less than 100 μm in thickness. While these tissues are small in scale, they play critical roles in normal tissue function and healing. Examples of TMTs include the tympanic membrane, cornea, periosteum, and epidermis. Damage to these structures can be caused by trauma or congenital disabilities, resulting in hearing loss, blindness, dysfunctional bone development, and impaired wound repair, respectively. While autologous and allogeneic tissue sources for these membranes exist, they are significantly limited by availability and patient complications. Tissue engineering has therefore become a popular strategy for TMT replacement. However, due to their complex microscale architecture, TMTs are often difficult to replicate in a biomimetic manner. The critical challenge in TMT fabrication is balancing fine resolution with the ability to mimic complex target tissue anatomy. This Review reports existing TMT fabrication strategies, their resolution and material capabilities, cell and tissue response, and the advantages and disadvantages of each technique.
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Affiliation(s)
- Shannon McLoughlin
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
- Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland 20742, United States
| | - Abigail Ruth McKenna
- Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland 20742, United States
- Department of Biology, University of Maryland, College Park, Maryland 20742, United States
| | - John P Fisher
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
- Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland 20742, United States
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6
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Moghaddam SV, Abedi F, Lotfi H, Salehi R, Barzegar A, Eslaminejad MB, Khalili M, Alizadeh E. An efficient method for cell sheet bioengineering from rBMSCs on thermo-responsive PCL-PEG-PCL copolymer. J Biol Eng 2023; 17:27. [PMID: 37024910 PMCID: PMC10080813 DOI: 10.1186/s13036-023-00346-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 03/25/2023] [Indexed: 04/08/2023] Open
Abstract
Utilizing both medium enrichment and a thermos-responsive substrate to maintain the cell-to-cell junctions and extracellular matrix (ECM) intact, cell sheet technology has emerged as a ground-breaking approach. Investigating the possibility of using sodium selenite (as medium supplementation) and PCL-PEG-PCL (as vessel coating substrate) in the formation of the sheets from rat bone marrow-derived mesenchymal stem cells (rBMSCs) was the main goal of the present study. To this end, first, Polycaprolactone-co-Poly (ethylene glycol)-co-Polycaprolactone triblock copolymer (PCEC) was prepared by ring-opening copolymerization method and characterized by FTIR, 1 H NMR, and GPC. The sol-gel-sol phase transition temperature of the PCEC aqueous solutions with various concentrations was either measured. Next, rBMSCs were cultured on the PCEC, and let be expanded in five different media containing vitamin C (50 µg/ml), sodium selenite (0.1 µM), vitamin C and sodium selenite (50 µg/ml + 0.1 µM), Trolox, and routine medium. The proliferation of the cells exposed to each material was evaluated. Produced cell sheets were harvested from the polymer surface by temperature reduction and phenotypically analyzed via an inverted microscope, hematoxylin and eosin (H&E) staining, and field emission scanning electron microscopy (FESEM). Through the molecular level, the expression of the stemness-related genes (Sox2, Oct-4, Nanog), selenium-dependent enzymes (TRX, GPX-1), and aging regulator gene (Sirt1) were measured by q RT-PCR. Senescence in cell sheets was checked by beta-galactosidase assay. The results declared the improved ability of the rBMSCs for osteogenesis and adipogenesis in the presence of antioxidants vitamin C, sodium selenite, and Trolox in growth media. The data indicated that in the presence of vitamin C and sodium selenite, the quality of the cell sheet was risen by reducing the number of senescent cells and high transcription of the stemness genes. Monolayers produced by sodium selenite was in higher-quality than the ones produced by vitamin C.
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Affiliation(s)
- Sevil Vaghefi Moghaddam
- Clinical Research Development, Unit of Tabriz Valiasr Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fatemeh Abedi
- Clinical Research Development, Unit of Tabriz Valiasr Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hajie Lotfi
- Cellular and Molecular Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Roya Salehi
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abolfazl Barzegar
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran.
| | - Mohamadreza Baghaban Eslaminejad
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Mostafa Khalili
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Effat Alizadeh
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
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7
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Ascorbic Acid 2-Phosphate-Releasing Supercritical Carbon Dioxide-Foamed Poly(L-Lactide-Co-epsilon-Caprolactone) Scaffolds Support Urothelial Cell Growth and Enhance Human Adipose-Derived Stromal Cell Proliferation and Collagen Production. J Tissue Eng Regen Med 2023. [DOI: 10.1155/2023/6404468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
Tissue engineering can provide a novel approach for the reconstruction of large urethral defects, which currently lacks optimal repair methods. Cell-seeded scaffolds aim to prevent urethral stricture and scarring, as effective urothelium and stromal tissue regeneration is important in urethral repair. In this study, the aim was to evaluate the effect of the novel porous ascorbic acid 2-phosphate (A2P)-releasing supercritical carbon dioxide-foamed poly(L-lactide-co-ε-caprolactone) (PLCL) scaffolds (scPLCLA2P) on the viability, proliferation, phenotype maintenance, and collagen production of human urothelial cell (hUC) and human adipose-derived stromal cell (hASC) mono- and cocultures. The scPLCLA2P scaffold supported hUC growth and phenotype both in monoculture and in coculture. In monocultures, the proliferation and collagen production of hASCs were significantly increased on the scPLCLA2P compared to scPLCL scaffolds without A2P, on which the hASCs formed nonproliferating cell clusters. Our findings suggest the A2P-releasing scPLCLA2P to be a promising material for urethral tissue engineering.
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8
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Xuan Z, Zachar V, Pennisi CP. Sources, Selection, and Microenvironmental Preconditioning of Cells for Urethral Tissue Engineering. Int J Mol Sci 2022; 23:ijms232214074. [PMID: 36430557 PMCID: PMC9697333 DOI: 10.3390/ijms232214074] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/10/2022] [Accepted: 11/12/2022] [Indexed: 11/18/2022] Open
Abstract
Urethral stricture is a common urinary tract disorder in men that can be caused by iatrogenic causes, trauma, inflammation, or infection and often requires reconstructive surgery. The current therapeutic approach for complex urethral strictures usually involves reconstruction with autologous tissue from the oral mucosa. With the goal of overcoming the lack of sufficient autologous tissue and donor site morbidity, research over the past two decades has focused on cell-based tissue-engineered substitutes. While the main focus has been on autologous cells from the penile tissue, bladder, and oral cavity, stem cells from sources such as adipose tissue and urine are competing candidates for future urethral regeneration due to their ease of collection, high proliferative capacity, maturation potential, and paracrine function. This review addresses the sources, advantages, and limitations of cells for tissue engineering in the urethra and discusses recent approaches to improve cell survival, growth, and differentiation by mimicking the mechanical and biophysical properties of the extracellular environment.
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9
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Liu M, Chen J, Cao N, Zhao W, Gao G, Wang Y, Fu Q. Therapies Based on Adipose-Derived Stem Cells for Lower Urinary Tract Dysfunction: A Narrative Review. Pharmaceutics 2022; 14:pharmaceutics14102229. [PMID: 36297664 PMCID: PMC9609842 DOI: 10.3390/pharmaceutics14102229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 10/05/2022] [Accepted: 10/08/2022] [Indexed: 11/16/2022] Open
Abstract
Lower urinary tract dysfunction often requires tissue repair or replacement to restore physiological functions. Current clinical treatments involving autologous tissues or synthetic materials inevitably bring in situ complications and immune rejection. Advances in therapies using stem cells offer new insights into treating lower urinary tract dysfunction. One of the most frequently used stem cell sources is adipose tissue because of its easy access, abundant source, low risk of severe complications, and lack of ethical issues. The regenerative capabilities of adipose-derived stem cells (ASCs) in vivo are primarily orchestrated by their paracrine activities, strong regenerative potential, multi-differentiation potential, and cell–matrix interactions. Moreover, biomaterial scaffolds conjugated with ASCs result in an extremely effective tissue engineering modality for replacing or repairing diseased or damaged tissues. Thus, ASC-based therapy holds promise as having a tremendous impact on reconstructive urology of the lower urinary tract.
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Affiliation(s)
- Meng Liu
- Department of Urology, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Eastern Institute of Urologic Reconstruction, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Jiasheng Chen
- Department of Urology, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Eastern Institute of Urologic Reconstruction, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Nailong Cao
- Department of Urology, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Eastern Institute of Urologic Reconstruction, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Weixin Zhao
- Wake Forest Institute for Regenerative Medicine, Winston-Salem, NC 27157, USA
| | - Guo Gao
- Key Laboratory for Thin Film and Micro Fabrication of the Ministry of Education, School of Sensing Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ying Wang
- Department of Urology, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Eastern Institute of Urologic Reconstruction, Shanghai Jiao Tong University, Shanghai 200233, China
- Correspondence: (Y.W.); (Q.F.)
| | - Qiang Fu
- Department of Urology, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Eastern Institute of Urologic Reconstruction, Shanghai Jiao Tong University, Shanghai 200233, China
- Correspondence: (Y.W.); (Q.F.)
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10
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Liang Y, Yang C, Ye F, Cheng Z, Li W, Hu Y, Hu J, Zou L, Jiang H. Repair of the Urethral Mucosa Defect Model Using Adipose-Derived Stem Cell Sheets and Monitoring the Fate of Indocyanine Green-Labeled Sheets by Near Infrared-II. ACS Biomater Sci Eng 2022; 8:4909-4920. [PMID: 36201040 DOI: 10.1021/acsbiomaterials.2c00695] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Treatment of urethral mucosa defects is a major challenge in urology. Synthetic materials or autologous mucosa does not provide satisfactory treatment options for long-term or large urethral mucosa defects. In response to this problem, we used autologous adipose-derived stem cells (ADSCs) to synthesize cell sheets in vitro for repairing urethral mucosa defect models. In order to monitor the localization and distribution of cell sheets in vivo, cells and sheets were labeled with indocyanine green (ICG) and the second near-infrared (NIR-II) fluorescence imaging was performed. ICG-based NIR-II imaging can successfully track ADSCs and sheets in vivo up to 8 W. Then, rabbit urethral mucosa defect models were repaired with ICG-ADSCs sheets. At 3 months after operation, retrograde urethrography showed that ADSC sheets could effectively repair urethral mucosa defect and restore urethral patency. Histological analysis showed that in ADSC sheet groups, continuous epithelial cells covered the urethra at the transplantation site, and a large number of vascular endothelial cells could also be seen. In the cell-free sheet group, there was no continuous epithelial cell coverage at the repair site of the urethra, and the expression of pro-inflammatory factor TNF-α was increased. It shows that the extracellular matrix alone without cells is not suitable for repairing urethral defects. Surviving ADSCs in the sheets may play a key role in the repair process. This study provides a new tracing method for tissue engineering to dynamically track grafts using an NIR-II imaging system. The ADSC sheets can effectively restore the structure and function of the urethra. It provides a new option for the repair of urethral mucosa defects.
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Affiliation(s)
- Yingchun Liang
- Department of Urology, Huashan Hospital, Fudan University, No. 12 WuLuMuQi Middle Road, 200040 Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, 200040 Shanghai, China
| | - Chen Yang
- Department of Urology, Huashan Hospital, Fudan University, No. 12 WuLuMuQi Middle Road, 200040 Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, 200040 Shanghai, China
| | - Fangdie Ye
- Department of Urology, Huashan Hospital, Fudan University, No. 12 WuLuMuQi Middle Road, 200040 Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, 200040 Shanghai, China
| | - Zhang Cheng
- Department of Urology, Huashan Hospital, Fudan University, No. 12 WuLuMuQi Middle Road, 200040 Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, 200040 Shanghai, China
| | - Weijian Li
- Department of Urology, Huashan Hospital, Fudan University, No. 12 WuLuMuQi Middle Road, 200040 Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, 200040 Shanghai, China
| | - Yun Hu
- Department of Urology, Huashan Hospital, Fudan University, No. 12 WuLuMuQi Middle Road, 200040 Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, 200040 Shanghai, China
| | - Jimeng Hu
- Department of Urology, Huashan Hospital, Fudan University, No. 12 WuLuMuQi Middle Road, 200040 Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, 200040 Shanghai, China
| | - Lujia Zou
- Department of Urology, Huashan Hospital, Fudan University, No. 12 WuLuMuQi Middle Road, 200040 Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, 200040 Shanghai, China
| | - Haowen Jiang
- Department of Urology, Huashan Hospital, Fudan University, No. 12 WuLuMuQi Middle Road, 200040 Shanghai, China.,Fudan Institute of Urology, Huashan Hospital, Fudan University, 200040 Shanghai, China.,National Clinical Research Center for Aging and Medicine, Fudan University, 200040 Shanghai, China
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11
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Tan Q, Le H, Tang C, Zhang M, Yang W, Hong Y, Wang X. Tailor-made natural and synthetic grafts for precise urethral reconstruction. J Nanobiotechnology 2022; 20:392. [PMID: 36045428 PMCID: PMC9429763 DOI: 10.1186/s12951-022-01599-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 08/13/2022] [Indexed: 11/10/2022] Open
Abstract
Injuries to the urethra can be caused by malformations, trauma, inflammation, or carcinoma, and reconstruction of the injured urethra is still a significant challenge in clinical urology. Implanting grafts for urethroplasty and end-to-end anastomosis are typical clinical interventions for urethral injury. However, complications and high recurrence rates remain unsatisfactory. To address this, urethral tissue engineering provides a promising modality for urethral repair. Additionally, developing tailor-made biomimetic natural and synthetic grafts is of great significance for urethral reconstruction. In this work, tailor-made biomimetic natural and synthetic grafts are divided into scaffold-free and scaffolded grafts according to their structures, and the influence of different graft structures on urethral reconstruction is discussed. In addition, future development and potential clinical application strategies of future urethral reconstruction grafts are predicted.
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Affiliation(s)
- Qinyuan Tan
- Department of Urology, The First Hospital of Jilin University, 1 Xinmin Street, Changchun, 130061, People's Republic Of China
| | - Hanxiang Le
- Department of Orthopedics, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, People's Republic Of China
| | - Chao Tang
- Department of Urology, The First Hospital of Jilin University, 1 Xinmin Street, Changchun, 130061, People's Republic Of China
| | - Ming Zhang
- Department of Urology, The First Hospital of Jilin University, 1 Xinmin Street, Changchun, 130061, People's Republic Of China
| | - Weijie Yang
- Department of Urology, The First Hospital of Jilin University, 1 Xinmin Street, Changchun, 130061, People's Republic Of China
| | - Yazhao Hong
- Department of Pediatric Surgery, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Street, Nanjing, 210029, People's Republic Of China.
| | - Xiaoqing Wang
- Department of Urology, The First Hospital of Jilin University, 1 Xinmin Street, Changchun, 130061, People's Republic Of China.
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12
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Zhang D, Wang Y, Liu L, Li Z, Yang S, Zhao W, Wang X, Liao H, Zhou S. Establishment and evaluation of ectopic and orthotopic prostate cancer models using cell sheet technology. Lab Invest 2022; 20:381. [PMID: 36038939 PMCID: PMC9422158 DOI: 10.1186/s12967-022-03575-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 08/04/2022] [Indexed: 08/30/2023]
Abstract
Background The traditional prostate cancer (PCa) model is established by injecting cell suspension and is associated with a low tumor formation rate. Cell sheet technology is one of the advancements in tissue engineering for 3D cell-based therapy. In this study, we established ectopic and orthotopic PCa models by cell sheet technology, and then compared the efficiency of tumor formation with cell suspension injection. Methods DU145 cells were seeded on 35 mm temperature-sensitive dishes to form PCa cell sheets, while the cell suspension with the same cell density was prepared. After transplanting into the nude mice, the tumor volumes were measured every 3 days and the tumor growth curves were conducted. At the time points of 2 weeks and 4 weeks after the transplantation, magnetic resonance imaging (MRI) was used to evaluate the transplanting site and distant metastasis. Finally, the mice were sacrificed, and the related tissues were harvested for the further histological evaluation. Results The orthotopic tumor formation rate of the cell sheet injection group was obviously better than that in cell suspension injection group (100% vs 67%). Compared with cell suspension injection, the tumors of DU145 cell sheet fragments injection had the higher density of micro-vessels, more collagen deposition, and lower apoptosis rate. There was no evidence of metastasis in forelimb, lung and liver was found by MRI and histological tests. Conclusion We successfully cultured the DU145 cell sheet and can be used to establish ectopic and orthotopic PCa tumor-bearing models, which provide an application potential for preclinical drug development, drug-resistance mechanisms and patient individualized therapy.
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Affiliation(s)
- Dongliang Zhang
- Department of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Wang
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Eastern Institute of Urologic Reconstruction, Shanghai Jiao Tong University, Shanghai, 200233, China
| | - Lei Liu
- Department of Urology, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610041, China
| | - Zeng Li
- Department of Urology, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610041, China
| | - Shengke Yang
- Department of Urology, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610041, China
| | - Weixin Zhao
- Wake Forest Institute for Regenerative Medicine, Wake Forest University School of Medicine, Winston Salem, NC, 27157, USA
| | - Xiang Wang
- Department of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hong Liao
- Department of Urology, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610041, China.
| | - Shukui Zhou
- Department of Urology, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610041, China.
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13
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Yang M, Liu G, Ying Q. Study on Protein Nanomarker Combined with Vascular Endothelial Growth Factor to Improve Vascularization of Rabbit Urethral Defect Tissue Engineering. J BIOMATER TISS ENG 2022. [DOI: 10.1166/jbt.2022.2949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
To construct the tissue engineering urethral material that is closest to the normal urethral structure in the true sense in vitro. Abdominal ADSC from a 2-month-old New Zealand white rabbit was extracted and directly compounded with non-woven polyglycolic acid (PGA) (control
group) to induce the differentiation of myoblasts and epithelial-like cells in vitro and shaped into urethral structure lumen Observation group); After Gd chelating protein nano-labeling and VEGF-loaded sustained release, the rabbit model of a long urethral defect was replanted and
cultured for 4 weeks, 8 weeks and 12 weeks, respectively. There was no difference in urinary tract patency rate, urinary tract infection, and renal dysfunction rate between the two groups (P > 0.05). The urine flow rate in the observation group was significantly higher than that
in the control group, and the residual volume decreased (P < 0.05). The blood vessel density and CD31 percentage in the observation group increased (P < 0.05). Compared with the conventional ADSC directly in contact with the composite material to construct the urethra,
in vitro induction of ADSC to myoblasts and epithelial-like cells respectively, and then use the cell membrane technology to build a tissue engineering urethral material that is closest to the normal urethral structure in the true sense, and loaded with VEGF Loop release technology
can significantly improve urodynamic functions, optimize tissue engineering urethral structure and vascularization, and is expected to become a new technology for constructing new tissue engineering urethral materials.
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Affiliation(s)
- Min Yang
- Department of Obstetrics and Gynecology, Shaxiyuan District, Luzhou People’s Hospital, Sichuan Province, 646000, China
| | - Guixi Liu
- Department of Urology, The Third Hospital of Mianyang (Sichuan Mental Health Center), Sichuan Province, 621000, China
| | - Qiao Ying
- Department of Urology, People’s Hospital of Guang’an City (West China-Guang’an Hospital, Sichuan University), 638000, China
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Wang L, Wei X, Duan C, Yang J, Xiao S, Liu H, Sun J. Bone marrow mesenchymal stem cell sheets with high expression of hBD3 and CTGF promote periodontal regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2022; 133:112657. [PMID: 35034825 DOI: 10.1016/j.msec.2022.112657] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 12/12/2021] [Accepted: 01/06/2022] [Indexed: 12/31/2022]
Abstract
The multi-bacterial environment of the oral cavity makes it hard for periodontal regeneration. As a class of antimicrobial peptide, beta defensin has been found to show broad-spectrum antibacterial ability. In addition, connective tissue growth factor (CTGF) is demonstrated to play a great role in multi-physiological events such as angiogenesis, wound healing and, more importantly, fibrogenesis. In this study, human β defensin 3 (hBD3) and CTGF were co-transfected into bone marrow derived mesenchymal stem cells (BMSCs) for preparing cell sheets. The transfection efficiency was detected through fluorescence of eGFP and western blot assay. Our results showed that the hBD3 and CTGF proteins were highly and stably expressed in the BMSCs after transfection. The results of RT-PCR and induced differentiation indicated that hBD3 promoted osteogenic differentiation of BMSCs, while CTGF significantly increased fibrogenic differentiation even in the presence of hBD3. The BMSCs acquired stronger capacity in terms of promoting M2 polarization of RAW 264.7 macrophages fulfilled by the transfection and secretion of hBD3 and CTGF. To further evaluate the periodontal remodeling performance of cell sheets, a coralline hydroxyapatite (CHA)-chitosan based hydrogel-human tooth system was designed to simulate the natural periodontal environment. The results showed that dense extracellular matrix, oriented fiber arrangement, and abundant collagen deposition appeared in the area of BMSCs sheets after subcutaneous transplantation. Altogether, our data showed that the lentivirus transfected BMSCs sheets had a promising application prospect for periodontal repair.
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Affiliation(s)
- Li Wang
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, PR China
| | - Xinbo Wei
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, PR China
| | - Cuimi Duan
- Tissue Engineering Research Center, Beijing Institute of Basic Medical Sciences, PR China
| | - Jinjin Yang
- Department of Stomatology, The Fifth Medical Center, Chinese PLA General Hospital, Xisihuan Middle Road 100, Fengtai District, Beijing 100036, PR China
| | - Shengzhao Xiao
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, PR China
| | - Haifeng Liu
- Key Laboratory for Biomechanics and Mechanobiology (Beihang University) of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, PR China.
| | - Jie Sun
- Department of Stomatology, The Fifth Medical Center, Chinese PLA General Hospital, Xisihuan Middle Road 100, Fengtai District, Beijing 100036, PR China.
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15
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Lu Y, Yu CH, Yang G, Sun N, Jiang F, Zhou M, Wu X, Luo J, Huang C, Zhang W, Jiang X. A rapidly magnetically assembled stem cell microtissue with "hamburger" architecture and enhanced vascularization capacity. Bioact Mater 2021; 6:3756-3765. [PMID: 33898876 PMCID: PMC8044908 DOI: 10.1016/j.bioactmat.2021.03.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 02/23/2021] [Accepted: 03/02/2021] [Indexed: 12/19/2022] Open
Abstract
With the development of magnetic manipulation technology based on magnetic nanoparticles (MNPs), scaffold-free microtissues can be constructed utilizing the magnetic attraction of MNP-labeled cells. The rapid in vitro construction and in vivo vascularization of microtissues with complex hierarchical architectures are of great importance to the viability and function of stem cell microtissues. Endothelial cells are indispensable for the formation of blood vessels and can be used in the prevascularization of engineered tissue constructs. Herein, safe and rapid magnetic labeling of cells was achieved by incubation with MNPs for 1 h, and ultrathick scaffold-free microtissues with different sophisticated architectures were rapidly assembled, layer by layer, in 5 min intervals. The in vivo transplantation results showed that in a stem cell microtissue with trisection architecture, the two separated human umbilical vein endothelial cell (HUVEC) layers would spontaneously extend to the stem cell layers and connect with each other to form a spatial network of functional blood vessels, which anastomosed with the host vasculature. The "hamburger" architecture of stem cell microtissues with separated HUVEC layers could promote vascularization and stem cell survival. This study will contribute to the construction and application of structural and functional tissues or organs in the future.
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Affiliation(s)
- Yuezhi Lu
- Department of Prosthodontics, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Chun-Hua Yu
- Department of Prosthodontics, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Guangzheng Yang
- Department of Prosthodontics, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Ningjia Sun
- Department of Prosthodontics, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Fei Jiang
- Department of Prosthodontics, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Mingliang Zhou
- Department of Prosthodontics, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Xiaolin Wu
- Department of Prosthodontics, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Jiaxin Luo
- Department of Prosthodontics, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Cui Huang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory for Oral Biomedical Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei, 430079, China
| | - Wenjie Zhang
- Department of Prosthodontics, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Xinquan Jiang
- Department of Prosthodontics, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
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Friedrich RP, Cicha I, Alexiou C. Iron Oxide Nanoparticles in Regenerative Medicine and Tissue Engineering. NANOMATERIALS 2021; 11:nano11092337. [PMID: 34578651 PMCID: PMC8466586 DOI: 10.3390/nano11092337] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/03/2021] [Accepted: 09/06/2021] [Indexed: 12/13/2022]
Abstract
In recent years, many promising nanotechnological approaches to biomedical research have been developed in order to increase implementation of regenerative medicine and tissue engineering in clinical practice. In the meantime, the use of nanomaterials for the regeneration of diseased or injured tissues is considered advantageous in most areas of medicine. In particular, for the treatment of cardiovascular, osteochondral and neurological defects, but also for the recovery of functions of other organs such as kidney, liver, pancreas, bladder, urethra and for wound healing, nanomaterials are increasingly being developed that serve as scaffolds, mimic the extracellular matrix and promote adhesion or differentiation of cells. This review focuses on the latest developments in regenerative medicine, in which iron oxide nanoparticles (IONPs) play a crucial role for tissue engineering and cell therapy. IONPs are not only enabling the use of non-invasive observation methods to monitor the therapy, but can also accelerate and enhance regeneration, either thanks to their inherent magnetic properties or by functionalization with bioactive or therapeutic compounds, such as drugs, enzymes and growth factors. In addition, the presence of magnetic fields can direct IONP-labeled cells specifically to the site of action or induce cell differentiation into a specific cell type through mechanotransduction.
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17
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Kharbikar BN, Zhong JX, Cuylear DL, Perez CA, Desai TA. Theranostic biomaterials for tissue engineering. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2021; 19. [PMID: 35529078 PMCID: PMC9075690 DOI: 10.1016/j.cobme.2021.100299] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Tissue engineering strategies, notably biomaterials, can be modularly designed and tuned to match specific patient needs. Although many challenges within tissue engineering remain, the incorporation of diagnostic strategies to create theranostic (combined therapy and diagnostic) biomaterials presents a unique platform to provide dual monitoring and treatment capabilities and advance the field toward personalized technologies. In this review, we summarize recent developments in this young field of regenerative theranostics and discuss the clinical potential and outlook of these systems from a tissue engineering perspective. As the need for precision and personalized medicines continues to increase to address diseases in all tissues in a patient-specific manner, we envision that such theranostic platforms can serve these needs.
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Tissue engineering: recent advances and review of clinical outcome for urethral strictures. Curr Opin Urol 2021; 31:498-503. [PMID: 34397507 DOI: 10.1097/mou.0000000000000921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
PURPOSE OF REVIEW Urethrotomy remains the first-line therapy in the treatment of a urethral stricture despite data showing no real chance of a cure after repeated urethrotomies. An anastomotic or an augmentation urethroplasty using oral mucosa can be offered to patients following failed urethrotomy. The potential for a tissue engineered solution as an alternative to native tissue has been explored in recent years and is reviewed in this article. RECENT FINDINGS More than 80 preclinical studies have investigated a tissue-engineered approach for urethral reconstruction mostly using decellularized natural scaffolds derived from natural extracellular matrix with or without cell seeding. The animal models used in preclinical testing are not representative of disease processes seen with strictures in man. The available clinical studies are based on small noncontrolled series. SUMMARY There is a potential role for tissue engineering to provide a material for substitution urethroplasty and work has demonstrated this. Further work will require a rigorous basic science programme and adequate evaluation of the material prior to its introduction into clinical practice. The research with tissue engineering applied to the urethra has not yet been resulted in a widely available material for clinical use that approaches the efficacy seen with the use of autologous grafts.
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Xue F, Bai Y, Jiang Y, Liu J, Jian K. Construction and a preliminary study of paracrine effect of bone marrow-derived endothelial progenitor cell sheet. Cell Tissue Bank 2021; 23:185-197. [PMID: 34052984 PMCID: PMC8854320 DOI: 10.1007/s10561-021-09932-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 04/21/2021] [Indexed: 12/14/2022]
Abstract
The release of paracrine factors from endothelial progenitor cell (EPC) sheet is a central mechanism of tissue repair. The purpose of this study was to constuct the rat bone marrow derived-endothelial progenitor cell (BM-EPCs) sheet and investigate invest the role of stromal cell-derived factor-1α (SDF-1α)/CXCR4 axis in the biological function of BM-EPCs sheet. BM-EPC cells were identified by the cell-surface markers-CD34/CD133/VE-cadherin/KDR using flow cytometry and dual affinity for acLDL and UEA-1. After 7 days of incubation, the BM-EPC single-cell suspensions were seeded on thermo-sensitive plate to harvest the BM-EPC cell sheets. The expression levels of SDF-1α/CXCR4 axis-associated genes and proteins were examined using RT-qPCR and western blot analysis, and enzyme-linked immunosorbent assay (ELISA) was applied to determine the concentration of vascular endothelial growth factor (VEGF), epidermal growth factor (EGF) and SDF-1α in the cell culture medium. The BM-EPC cell sheets were successfully harvested. Moreover, BM-EPC cell sheets have superior migration and tube formation activity when compared with single cell suspension. When capillary-like tube were formed from EPCs sheets, the releasing of paracrine factors such as VEGF, EGF and SDF-1α were increased. To reveal the mechanism of tube formation of BM-EPCs sheets, our research showed that the activation of PI3K/AKT/eNOS pathway was involved in the process, because the phosphorylation of CXCR, PI3K, AKT and eNOS were increased. BM-EPC cell sheets have superior paracrine and tube formation activity than the BM-EPC single-cell. The strong ability to secrete paracrine factors was be potentially related to the SDF-1α/CXCR4 axis through PI3K/AKT/eNOS pathway.
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Affiliation(s)
- Fenlong Xue
- Department of Cardiovascular Surgery, Tianjin First Central Hospital, Tianjin, 300192, China
| | - Yunpeng Bai
- Department of Cardiovascular Surgery, Tianjin Chest Hospital, Tianjin, 300051, China
| | - Yiyao Jiang
- Department of Cardiovascular Surgery, Tianjin First Central Hospital, Tianjin, 300192, China
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Bengbu Medical College, Anhui, 233004, China
| | - Jianshi Liu
- Department of Cardiovascular Surgery, DeltaHealth Hospital Shanghai, Shanghai, 200336, China
| | - Kaitao Jian
- Department of Cardiovascular Surgery, Tianjin Chest Hospital, Tianjin, 300051, China.
- Department of Cardiovascular Surgery, DeltaHealth Hospital Shanghai, Shanghai, 200336, China.
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Vasyutin I, Butnaru D, Lyundup A, Timashev P, Vinarov A, Kuznetsov S, Atala A, Zhang Y. Frontiers in urethra regeneration: current state and future perspective. Biomed Mater 2021; 16. [PMID: 32503009 DOI: 10.1088/1748-605x/ab99d2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 06/05/2020] [Indexed: 12/13/2022]
Abstract
Despite the positive achievements attained, the treatment of male urethral strictures and hypospadiases still remains a challenge, particularly in cases of severe urethral defects. Complications and the need for additional interventions in such cases are common. Also, shortage of autologous tissue for graft harvesting and significant morbidity in the location of harvesting present problems and often lead to staged treatment. Tissue engineering provides a promising alternative to the current sources of grafts for urethroplasty. Since the first experiments in urethral substitution with tissue engineered grafts, this topic in regenerative medicine has grown remarkably, as many different types of tissue-engineered grafts and approaches in graft design have been suggested and testedin vivo. However, there have been only a few clinical trials of tissue-engineered grafts in urethral substitution, involving hardly more than a hundred patients overall. This indicates that the topic is still in its inception, and the search for the best graft design is continuing. The current review focuses on the state of the art in urethral regeneration with tissue engineering technology. It gives a comprehensive overview of the components of the tissue-engineered graft and an overview of the steps in graft development. Different cell sources, types of scaffolds, assembling approaches, options for vascularization enhancement and preclinical models are considered.
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Affiliation(s)
- Igor Vasyutin
- Sechenov University, 8-2 Trubetskaya str., Moscow 119991, Russia
| | - Denis Butnaru
- Sechenov University, 8-2 Trubetskaya str., Moscow 119991, Russia
| | - Alexey Lyundup
- Sechenov University, 8-2 Trubetskaya str., Moscow 119991, Russia
| | - Peter Timashev
- Sechenov University, 8-2 Trubetskaya str., Moscow 119991, Russia
| | - Andrey Vinarov
- Sechenov University, 8-2 Trubetskaya str., Moscow 119991, Russia
| | - Sergey Kuznetsov
- Sechenov University, 8-2 Trubetskaya str., Moscow 119991, Russia
| | - Anthony Atala
- Wake Forest Institute for Regenerative Medicine, 391 Technology Way NE, Winston-Salem, NC 27101, United States of America
| | - Yuanyuan Zhang
- Sechenov University, 8-2 Trubetskaya str., Moscow 119991, Russia.,Wake Forest Institute for Regenerative Medicine, 391 Technology Way NE, Winston-Salem, NC 27101, United States of America
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21
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Zhang D, Hou J, Gu Y, Shao J, Zhou S, Zhuang J, Song L, Wang X. Cryopreserved skin epithelial cell sheet combined with acellular amniotic membrane as an off-the-shelf scaffold for urethral regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 122:111926. [PMID: 33641919 DOI: 10.1016/j.msec.2021.111926] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 12/29/2022]
Abstract
BACKGROUND Autologous tissue transplantation for urethral repair is often limited and causes donor site complications. Here, a cryopreserved rabbit skin epithelial cell sheet (SEC) combined with an acellular amniotic membrane (AM) was used to repair rabbit urethral defects. METHODS Abdominal skin was collected from 4-week-old New Zealand rabbits, and primary epithelial cells were extracted and cultured to form a cell sheet. Fresh SEC-AMs were constructed and cryopreserved. A cryopreservation system including optimized medium, two-pump perfusion, a programmed freezer and liquid nitrogen storage was established. Cell viability, mechanical strength, electron microscopy, and histological staining were performed in vitro after 1 month. Next, the sheets were transplanted subcutaneously for 2 weeks, and the graft was used to repair the rabbit urethral defect. Urinary function was measured and samples were collected for histological staining after 1 month. RESULTS We confirmed that cryopreservation damage of SECs was reduced by composition with acellular AMs in terms of high cell activity. The SEC mechanical strength was also enhanced by AMs, which was convenient for the operation. In in vivo experiments, we transplanted sheets into the groin area for two weeks and found that cryopreservation reduced inflammatory cell infiltration and significantly improved vascular density. In the urethral repair experiment, the near-normal passive urine flow rate, smooth mucosa of the gross specimen, intact epithelialization and abundant neovascularization were confirmed in the cryopreserved-SEC-AM group compared with the other groups. CONCLUSIONS Cryopreserved SEC-AMs demonstrated similar outcomes of rabbit urethral defect repair as fresh SEC-AMs, showing good clinical application prospects.
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Affiliation(s)
- Dongliang Zhang
- Department of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jiangang Hou
- Department of Urology, Huashan Hospital Fudan University, Shanghai, China
| | - Yubo Gu
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Jialiang Shao
- Department of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shukui Zhou
- Department of Urology, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Jingming Zhuang
- Department of Urology, Huashan Hospital Fudan University, Shanghai, China
| | - Lujie Song
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.
| | - Xiang Wang
- Department of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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22
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Nanomagnetic Actuation of Hybrid Stents for Hyperthermia Treatment of Hollow Organ Tumors. NANOMATERIALS 2021; 11:nano11030618. [PMID: 33801426 PMCID: PMC7999083 DOI: 10.3390/nano11030618] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/22/2021] [Accepted: 02/24/2021] [Indexed: 02/07/2023]
Abstract
This paper describes a magnetic nanotechnology that locally enables hyperthermia treatment of hollow organ tumors by using polymer hybrid stents with incorporated magnetic nanoparticles (MNP). The hybrid stents are implanted and activated in an alternating magnetic field to generate therapeutically effective heat, thereby destroying the tumor. Here, we demonstrate the feasibility of nanomagnetic actuation of three prototype hybrid stents for hyperthermia treatment of hollow organ tumors. The results show that the heating efficiency of stent filaments increases with frequency from approximately 60 W/gFe (95 kHz) to approximately 250 W/gFe (270 kHz). The same trend is observed for the variation of magnetic field amplitude; however, heating efficiency saturates at approximately 30 kA/m. MNP immobilization strongly influences heating efficiency showing a relative difference in heating output of up to 60% compared to that of freely dispersed MNP. The stents showed uniformly distributed heat on their surface reaching therapeutically effective temperatures of 43 °C and were tested in an explanted pig bile duct for their biological safety. Nanomagnetic actuation of hybrid stents opens new possibilities in cancer treatment of hollow organ tumors.
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Zhang D, Shao J, Zhuang J, Zhou S, Yin S, Wu F, Hou J, Wang X. Biobanked human foreskin epithelial cell sheets reduce inflammation and promote wound healing in a nude mouse model. BMC Biotechnol 2021; 21:11. [PMID: 33530972 PMCID: PMC7852184 DOI: 10.1186/s12896-021-00672-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Accepted: 12/30/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Human epithelial cell sheets (ECSs) are used to clinically treat epithelial conditions such as burns, corneal blindness, middle ear cholesteatoma and vitiligo. As a widely used material in clinic, there is little information on the biobanking of ECSs and its repair effect after storage. RESULTS Two methods for biobanking foreskin ECSs were compared in a short term (7 days): 4-degree storage and programmed cryopreservation. Cell sheet integrity, viability, apoptosis, immunogenicity, mechanical properties and function were evaluated. In vivo, ECSs were directly transplanted to skin defect models and histological examination was performed at 1 week postoperatively. We successfully extracted human foreskin-derived primary epithelial cells and fabricated them into ECSs. Compared with 4-degree storage, programmed cryopreservation preserved the ECS structural integrity, enhanced the mechanical properties, decreased HLA-I expression, and increased cell viability and survival. An increased proportion of melanocytes with proliferative capacity remained in the cryopreserved sheets, and the undifferentiated epithelial cells were comparable to those of the fresh sheets. In vivo, cryopreserved ECSs could reduce inflammatory cell infiltration and promote connective tissue remodeling, epithelial cell proliferation and vascular regeneration. CONCLUSIONS Programmed cryopreservation of ECSs was superior and more feasible than 4-degree storage and the cryopreserved ECSs achieved satisfying skin wound healing in vivo. We anticipate that the off-the-shelf ECSs could be quickly used, such as, to repair human epithelial defect in future.
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Affiliation(s)
- Dongliang Zhang
- Department of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jialiang Shao
- Department of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jingming Zhuang
- Department of Urology, Huashan Hospital, FuDan University, Shanghai, China
| | - Shukui Zhou
- Department of Urology, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Shuo Yin
- Remed Regenerative Medicine Clinical Application Institute, Shanghai, China
| | - Fuyue Wu
- Remed Regenerative Medicine Clinical Application Institute, Shanghai, China
| | - Jiangang Hou
- Department of Urology, Huashan Hospital, FuDan University, Shanghai, China.
| | - Xiang Wang
- Department of Urology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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24
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Parfenov VA, Koudan EV, Krokhmal AA, Annenkova EA, Petrov SV, Pereira FDAS, Karalkin PA, Nezhurina EK, Gryadunova AA, Bulanova EA, Sapozhnikov OA, Tsysar SA, Liu K, Oosterwijk E, van Beuningen H, van der Kraan P, Granneman S, Engelkamp H, Christianen P, Kasyanov V, Khesuani YD, Mironov VA. Biofabrication of a Functional Tubular Construct from Tissue Spheroids Using Magnetoacoustic Levitational Directed Assembly. Adv Healthc Mater 2020; 9:e2000721. [PMID: 32809273 DOI: 10.1002/adhm.202000721] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 07/06/2020] [Indexed: 12/15/2022]
Abstract
In traditional tissue engineering, synthetic or natural scaffolds are usually used as removable temporal support, which involves some biotechnology limitations. The concept of "scaffield" approach utilizing the physical fields instead of biomaterial scaffold has been proposed recently. In particular, a combination of intense magnetic and acoustic fields can enable rapid levitational bioassembly of complex-shaped 3D tissue constructs from tissue spheroids at low concentration of paramagnetic agent (gadolinium salt) in the medium. In the current study, the tissue spheroids from human bladder smooth muscle cells (myospheres) are used as building blocks for assembling the tubular 3D constructs. Levitational assembly is accomplished at low concentrations of gadolinium salts in the high magnetic field at 9.5 T. The biofabricated smooth muscle constructs demonstrate contraction after the addition of vasoconstrictive agent endothelin-1. Thus, hybrid magnetoacoustic levitational bioassembly is considered as a new technology platform in the emerging field of formative biofabrication. This novel technology of scaffold-free, nozzle-free, and label-free bioassembly opens a unique opportunity for rapid biofabrication of 3D tissue and organ constructs with complex geometry.
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Affiliation(s)
- Vladislav A. Parfenov
- Laboratory for Biotechnological Research “3D Bioprinting Solutions” Moscow 115409 Russia
- A. A. Baikov Institute of Metallurgy and Material Science Russian Academy of Sciences Moscow 119334 Russia
| | - Elizaveta V. Koudan
- Laboratory for Biotechnological Research “3D Bioprinting Solutions” Moscow 115409 Russia
| | - Alisa A. Krokhmal
- Department of Physics Lomonosov Moscow State University Moscow 119991 Russia
| | - Elena A. Annenkova
- Laboratory for Biotechnological Research “3D Bioprinting Solutions” Moscow 115409 Russia
| | - Stanislav V. Petrov
- Laboratory for Biotechnological Research “3D Bioprinting Solutions” Moscow 115409 Russia
| | | | - Pavel A. Karalkin
- P. A. Hertsen Moscow Oncology Research Center National Medical Research Radiological Center Moscow 125284 Russia
- I. M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University) Moscow 119991 Russia
| | - Elizaveta K. Nezhurina
- P. A. Hertsen Moscow Oncology Research Center National Medical Research Radiological Center Moscow 125284 Russia
| | - Anna A. Gryadunova
- Laboratory for Biotechnological Research “3D Bioprinting Solutions” Moscow 115409 Russia
| | - Elena A. Bulanova
- Laboratory for Biotechnological Research “3D Bioprinting Solutions” Moscow 115409 Russia
| | - Oleg A. Sapozhnikov
- Department of Physics Lomonosov Moscow State University Moscow 119991 Russia
| | - Sergey A. Tsysar
- Department of Physics Lomonosov Moscow State University Moscow 119991 Russia
| | - Kaizheng Liu
- Department of Urology Radboud University Medical Center Nijmegen 9102 The Netherlands
| | - Egbert Oosterwijk
- Department of Urology Radboud University Medical Center Nijmegen 9102 The Netherlands
| | - Henk van Beuningen
- Department of Experimental Rheumatology Radboud University Medical Center Nijmegen 9102 The Netherlands
| | - Peter van der Kraan
- Department of Experimental Rheumatology Radboud University Medical Center Nijmegen 9102 The Netherlands
| | - Sanne Granneman
- High Field Magnet Laboratory (HFML‐EMFL) Radboud University Toernooiveld 7 Nijmegen 9010 The Netherlands
| | - Hans Engelkamp
- High Field Magnet Laboratory (HFML‐EMFL) Radboud University Toernooiveld 7 Nijmegen 9010 The Netherlands
| | - Peter Christianen
- High Field Magnet Laboratory (HFML‐EMFL) Radboud University Toernooiveld 7 Nijmegen 9010 The Netherlands
| | - Vladimir Kasyanov
- Riga Stradins University Riga LV‐1007 Latvia
- Riga Technical University Riga LV‐1658 Latvia
| | - Yusef D. Khesuani
- Laboratory for Biotechnological Research “3D Bioprinting Solutions” Moscow 115409 Russia
| | - Vladimir A. Mironov
- Laboratory for Biotechnological Research “3D Bioprinting Solutions” Moscow 115409 Russia
- I. M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University) Moscow 119991 Russia
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25
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Preparation and Characterization of Nano-Laponite/PLGA Composite Scaffolds for Urethra Tissue Engineering. Mol Biotechnol 2020; 62:192-199. [PMID: 32016781 DOI: 10.1007/s12033-020-00237-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The purpose of this study was to construct a biomimetic urethral repair substitute. The nano-Laponite/polylactic acid-glycolic acid copolymer (PLGA) fiber scaffolds were produced to replicate the natural human urethra tissue microenvironment. PLGA (molar ratio 50:50) and Laponite were used in this study as raw materials. The nano-Laponite/PLGA scaffolds were fabricated via electrospinning technology. After preparing the material, the microstructural and mechanical properties of the nano-Laponite/PLGA scaffold were tested via scanning electron microscopy and electronic universal testing. The effects of different amounts of Laponite on the degradation of the nano-Laponite/PLGA scaffold were studied. Human umbilical vein endothelial cells (HUVECs) were co-cultured with PLGA and nano-Laponite/PLGA scaffolds for 24, 48, or 72 h. Scanning electron microscopy results illustrated that the microstructure of the scaffold fabricated by electrospinning was similar to that of the natural extracellular matrix. When the electrospinning liquid contained 10% Laponite, the nano-Laponite/PLGA stress-strain curve illustrated that the scaffold has strong elastic deformation ability. HUVECs exhibited good growth on the nano-Laponite/PLGA scaffold. When the scaffold contained 1% Laponite, the cell proliferation rate in the CCK-8 test was significantly better than that for the other three materials, displaying good cell culture characteristics. The 1% nano-Laponite/PLGA composite scaffold can be used as a suitable urethral repair material, but its performance requires further development and research.
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26
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Lai K, Xi Y, Du X, Jiang Z, Li Y, Huang T, Miao X, Wang H, Wang Y, Yang G. Activation of Nell-1 in BMSC Sheet Promotes Implant Osseointegration Through Regulating Runx2/Osterix Axis. Front Cell Dev Biol 2020; 8:868. [PMID: 33072736 PMCID: PMC7536315 DOI: 10.3389/fcell.2020.00868] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 08/11/2020] [Indexed: 12/11/2022] Open
Abstract
Neural epidermal growth factor-like 1 protein (Nell-1) is first studied because of its association with human craniosynostosis. Nell-1 has been used to accelerate the process of fracture healing because of the osteoinductive ability in recent years. However, the role of Nell-1 during the process of osteointegration is unknown. Here we show that activation of Nell-1 in the BMSC sheet promotes osseointegration in vivo and in vitro. We found that overexpression of Nell-1 improved osteogenic differentiation and enhanced matrix mineralization of BMSCs through increasing expression of Runx2 and Osterix. Activation of Nell-1 up-regulated the expression ratio of OPG/RANKL, which might have a negative influence on osteoclast differentiation. Furthermore, we obtained BMSC sheet-implant complexes transfected with lentivirus overexpressing and interfering Nell-1 in in vivo study, and confirmed that overexpression of Nell-1 promoted new bone formation around the implant and increased the bone-implant contacting area percentage. Our results demonstrate that activation of Nell-1 improves implant osteointegration by regulating Runx2/Osterix axis and shows the potential of BMSC sheet-implant complexes in gene therapy.
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Affiliation(s)
- Kaichen Lai
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, China
| | - Yue Xi
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, China
| | - Xue Du
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, China
| | - Zhiwei Jiang
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, China
| | - Yongzheng Li
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, China
| | - Tingben Huang
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, China
| | - Xiaoyan Miao
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, China
| | - Huiming Wang
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, China
| | - Ying Wang
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, China
| | - Guoli Yang
- The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, China
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27
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Zurina IM, Presniakova VS, Butnaru DV, Svistunov AA, Timashev PS, Rochev YA. Tissue engineering using a combined cell sheet technology and scaffolding approach. Acta Biomater 2020; 113:63-83. [PMID: 32561471 DOI: 10.1016/j.actbio.2020.06.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 06/08/2020] [Accepted: 06/10/2020] [Indexed: 12/13/2022]
Abstract
Cell sheet technology has remained quite popular among tissue engineering techniques over the last several years. Meanwhile, there is an apparent trend in modern scientific research towards combining different approaches and strategies. Accordingly, a large body of work has arisen where cell sheets are used not as separate structures, but in combination with scaffolds as supporting constructions. The aim of this review is to analyze the intersection of these two vast areas of tissue engineering described in the literature mainly within the last five years. Some practical and technical details are emphasized to provide information that can be useful in research design and planning. The first part of the paper describes the general issues concerning the use of combined technology, its advantages and limitations in comparison with those of other tissue engineering approaches. Next, the detailed literature analysis of in vivo studies aimed at the regeneration of different tissues is performed. A significant part of this section concerns bone regeneration. In addition to that, other connective tissue structures, including articular cartilage and fibrocartilage, ligaments and tendons, and some soft tissues are discussed. STATEMENT OF SIGNIFICANCE: This paper describes the intersection of two technologies used in designing of tissue-engineered constructions for regenerative medicine: cell sheets as extracellular matrix-rich structures and supporting scaffolds as essentials in tissue engineering. A large number of reviews are devoted to each of these scientific problems. However, the solution of complex problems of tissue engineering requires an integrated approach that includes both three-dimensional scaffolds and cell sheets. This manuscript serves as a description of advantages and limitations of this method, its use in regeneration of bones, connective tissues and soft tissues and some other details.
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Affiliation(s)
- Irina M Zurina
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 119991 8-2 Trubetskaya St., Moscow, Russia; FSBSI Institute of General Pathology and Pathophysiology, 125315, 8 Baltiyskaya St., Moscow, Russia; FSBEI FPE "Russian Medical Academy of Continuous Professional Education" of the Ministry of Healthcare of Russia, 125993, 2/1-1 Barrikadnaya St., Moscow, Russia
| | - Viktoria S Presniakova
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 119991 8-2 Trubetskaya St., Moscow, Russia
| | - Denis V Butnaru
- Sechenov First Moscow State Medical University (Sechenov University), 119991, 8-2 Trubetskaya St., Moscow, Russia
| | - Andrey A Svistunov
- Sechenov First Moscow State Medical University (Sechenov University), 119991, 8-2 Trubetskaya St., Moscow, Russia
| | - Peter S Timashev
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 119991 8-2 Trubetskaya St., Moscow, Russia; Institute of Photonic Technologies, Research Center "Crystallography and Photonics", Russian Academy of Sciences, 108840, 2 Pionerskaya st., Troitsk, Moscow, Russia; Department of Polymers and Composites, N.N. Semenov Institute of Chemical Physics, 119991 4 Kosygin st., Moscow, Russia; Chemistry Department, Lomonosov Moscow State University, Leninskiye Gory 1‑3, Moscow 119991, Russia.
| | - Yury A Rochev
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 119991 8-2 Trubetskaya St., Moscow, Russia; Centre for Research in Medical Devices (CÚRAM), National University of Ireland Galway, Galway H91 W2TY, Ireland
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28
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Guo HL, Peng XF, Bao XQ, Wang L, Jia ZM, Huang YC, Zhou JM, Xie H, Chen F. Bladder reconstruction using autologous smooth muscle cell sheets grafted on a pre-vascularized capsule. Theranostics 2020; 10:10378-10393. [PMID: 32929355 PMCID: PMC7482816 DOI: 10.7150/thno.47006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 08/08/2020] [Indexed: 01/20/2023] Open
Abstract
Rationale: Construction of functional vascularized three-dimensional tissues has been a longstanding objective in the field of tissue engineering. The efficacy of using a tissue expander capsule as an induced vascular bed to prefabricate functional vascularized smooth muscle tissue flaps for bladder reconstruction in a rabbit model was tested. Methods: Skin tissue expanders were inserted into the groin to induce vascularized capsule pouch formation. Smooth muscle cells and endothelial progenitor cells were harvested and cocultured to form pre-vascularized smooth muscle cell sheet. Then repeated transplantation of triple-layer cell sheet grafts onto the vascularized capsular tissue was performed at 2-day intervals to prefabricate functional vascularized smooth muscle tissue flaps. Bladder muscular wall defects were created and repaired by six-layer cell sheet graft (sheet only), capsule flap (capsule only) and vascularized capsule prelaminated with smooth muscle cell sheet (sheet plus capsule). The animals were followed for 3 months after implantation and their bladders were explanted serially. Results: Bladder capacity and compliance were maintained in sheet plus capsule group throughout the 3 months. Tissue bath stimulation demonstrated that contractile responses to carbachol and KCl among the three groups revealed a significant difference (p < 0.05). Histologically, inflammation was evident in the capsule only group at 1 month and fibrosis was observed in sheet only group at 3 months. The vessel density in capsule only and sheet plus capsule group were significantly higher than in the sheet only group at each time point (p < 0.05). Comparison of the smooth muscle content among the three groups revealed a significant difference (p < 0.05). Conclusion: These results proved that the capsule may serve as an induced vascular bed for vascularized smooth muscle tissue flap prefabrication. The prefabricated functional vascularized smooth muscle tissue flap has the potential for reliable bladder reconstruction and may create new opportunities for vascularization in 3-D tissue engineering.
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29
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Zhang K, Fang X, Zhu J, Yang R, Wang Y, Zhao W, Mo X, Fu Q. Effective Reconstruction of Functional Urethra Promoted With ICG-001 Delivery Using Core-Shell Collagen/Poly(Llactide-co-caprolactone) [P(LLA-CL)] Nanoyarn-Based Scaffold: A Study in Dog Model. Front Bioeng Biotechnol 2020; 8:774. [PMID: 32754582 PMCID: PMC7381300 DOI: 10.3389/fbioe.2020.00774] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 06/18/2020] [Indexed: 11/17/2022] Open
Abstract
Hypospadias and urethral stricture are common urological diseases which seriously affect voiding function and life quality of the patients, yet current clinical treatments often result in unsatisfactory clinical outcome with frequent complications. In vitro experiments confirmed that ICG-001 (a well-established Wnt signaling inhibitor) could effectively suppress fibroblast proliferation and fibrotic protein expression. In this study, we applied a novel drug-delivering nanoyarn scaffold in urethroplasty in dog model, which continuously delivers ICG-001 during tissue reconstruction, and could effectively promote urethral recovery and resume fully functional urethra within 12 weeks. Such attempts are essential to the development of regenerative medicine for urological disorders and for broader clinical applications in human patients.
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Affiliation(s)
- Kaile Zhang
- Department of Urology, Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaolan Fang
- Diagnostic Laboratory, Greenwood Genetic Center, Greenwood, SC, United States
| | - Jingjing Zhu
- Biomaterials and Tissue Engineering Laboratory, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, China
| | - Ranxing Yang
- Department of Urology, Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Ying Wang
- Department of Urology, Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Weixin Zhao
- Wake Forest Institute for Regenerative Medicine, Winston-Salem, NC, United States
| | - Xiumei Mo
- Biomaterials and Tissue Engineering Laboratory, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, China
| | - Qiang Fu
- Department of Urology, Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
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30
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Kamat P, Frueh FS, McLuckie M, Sanchez-Macedo N, Wolint P, Lindenblatt N, Plock JA, Calcagni M, Buschmann J. Adipose tissue and the vascularization of biomaterials: Stem cells, microvascular fragments and nanofat-a review. Cytotherapy 2020; 22:400-411. [PMID: 32507607 DOI: 10.1016/j.jcyt.2020.03.433] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 02/27/2020] [Accepted: 03/12/2020] [Indexed: 12/13/2022]
Abstract
Tissue defects in the human body after trauma and injury require precise reconstruction to regain function. Hence, there is a great demand for clinically translatable approaches with materials that are both biocompatible and biodegradable. They should also be able to adequately integrate within the tissue through sufficient vascularization. Adipose tissue is abundant and easily accessible. It is a valuable tissue source in regenerative medicine and tissue engineering, especially with regard to its angiogenic potential. Derivatives of adipose tissue, such as microfat, nanofat, microvascular fragments, stromal vascular fraction and stem cells, are commonly used in research, but also clinically to enhance the vascularization of implants and grafts at defect sites. In plastic surgery, adipose tissue is harvested via liposuction and can be manipulated in three ways (macro-, micro- and nanofat) in the operating room, depending on its ultimate use. Whereas macro- and microfat are used as a filling material for soft tissue injuries, nanofat is an injectable viscous extract that primarily induces tissue remodeling because it is rich in growth factors and stem cells. In contrast to microfat that adds volume to a defect site, nanofat has the potential to be easily combined with scaffold materials due to its liquid and homogenous consistency and is particularly attractive for blood vessel formation. The same is true for microvascular fragments that are easily isolated from adipose tissue through collagenase digestion. In preclinical animal models, it has been convincingly shown that these vascular fragments inosculate with host vessels and subsequently accelerate scaffold perfusion and host tissue integration. Adipose tissue is also an ideal source of stem cells. It yields larger quantities of cells than any other source and is easier to access for both the patient and doctor compared with other sources such as bone marrow. They are often used for tissue regeneration in combination with biomaterials. Adipose-derived stem cells can be applied unmodified or as single cell suspensions. However, certain pretreatments, such as cultivation under hypoxic conditions or three-dimensional spheroids production, may provide substantial benefit with regard to subsequent vascularization in vivo due to induced growth factor production. In this narrative review, derivatives of adipose tissue and the vascularization of biomaterials are addressed in a comprehensive approach, including several sizes of derivatives, such as whole fat flaps for soft tissue engineering, nanofat or stem cells, their secretome and exosomes. Taken together, it can be concluded that adipose tissue and its fractions down to the molecular level promote, enhance and support vascularization of biomaterials. Therefore, there is a high potential of the individual fat component to be used in regenerative medicine.
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Affiliation(s)
- Pranitha Kamat
- Department of Plastic Surgery and Hand Surgery, University Hospital Zurich, Zurich, Switzerland; Department of Plastic Surgery and Hand Surgery, University of Zurich, Zurich, Switzerland
| | - Florian S Frueh
- Department of Plastic Surgery and Hand Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Michelle McLuckie
- Department of Plastic Surgery and Hand Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Nadia Sanchez-Macedo
- Department of Plastic Surgery and Hand Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Petra Wolint
- Department of Plastic Surgery and Hand Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Nicole Lindenblatt
- Department of Plastic Surgery and Hand Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Jan A Plock
- Department of Plastic Surgery and Hand Surgery, University Hospital Zurich, Zurich, Switzerland; Department of Plastic Surgery and Hand Surgery, University of Zurich, Zurich, Switzerland
| | - Maurizio Calcagni
- Department of Plastic Surgery and Hand Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Johanna Buschmann
- Department of Plastic Surgery and Hand Surgery, University Hospital Zurich, Zurich, Switzerland.
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31
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Liu Y, Huang L, Yuan W, Zhang D, Gu Y, Huang J, Murphy S, Ali M, Zhang Y, Song L. Sustained release of stromal cell-derived factor-1 alpha from silk fibroin microfiber promotes urethral reconstruction in rabbits. J Biomed Mater Res A 2020; 108:1760-1773. [PMID: 32276293 DOI: 10.1002/jbm.a.36943] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 03/10/2020] [Accepted: 03/18/2020] [Indexed: 12/18/2022]
Abstract
We developed a stromal cell-derived factor-1 alpha (SDF-1α)-aligned silk fibroin (SF)/three-dimensional porous bladder acellular matrix graft (3D-BAMG) composite scaffold for long-section ventral urethral regeneration and repair in vivo. SDF-1α-aligned SF microfiber/3D-BAMG, aligned SF microfiber/3D-BAMG, and nonaligned SF microfiber/3D-BAMG scaffolds were prepared using electrostatic spinning and wet processing. Adipose-derived stem cell (ADSC) and bone marrow stromal cell (BMSC) migration was assessed in the SDF-1α-loaded scaffolds. Sustained SDF-1α release in vitro and vivo was analyzed using enzyme-linked immunosorbent assay (ELISA) and western blotting, respectively. The scaffolds were used to repair a 1.5 × 1 cm2 ventral urethral defect in male rabbits in vivo. General observation and retrograde urinary tract contrast assessment were used to examine urethral lumen patency and continuity at 1 and 3 months post-surgery. Postoperative rehabilitation was evaluated using histological detection. The composite scaffolds sustained SDF-1α release for over 16 days in vitro. SDF-1α-aligned SF nanofiber promoted regeneration of urethral mucosa, submucosal smooth muscles, and microvasculature, increased cellular proliferation, and reduced collagen deposition. SDF-1α expression was increased in reconstructed urethra at 3 months post-surgery in SDF-1α-aligned SF group. SDF-1α-aligned SF microfiber/3D-BAMG scaffolds may be used to repair and reconstruct long urethral defects because they accelerate urethral regeneration.
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Affiliation(s)
- Yang Liu
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Shanghai Eastern Institute of Urologic Reconstruction, Shanghai, China.,Department of Urology, Weifang People's Hospital, Weifang Medical University, Weifang, Shandong, China
| | - Li Huang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
| | - Wei Yuan
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.,Shanghai Eastern Institute of Urologic Reconstruction, Shanghai, China.,Department of Urology, Weifang People's Hospital, Weifang Medical University, Weifang, Shandong, China.,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
| | - Dongliang Zhang
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Yubo Gu
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Jianwen Huang
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Sean Murphy
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina
| | - Mohamed Ali
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina.,Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Yaopeng Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
| | - Lujie Song
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
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Abstract
PURPOSE OF REVIEW Urethrotomy remains the first-line therapy in the treatment of a urethral stricture despite data showing no real chance of a cure after repeated urethroplasties. An anastomotic or an augmentation urethroplasty with oral mucosa should be offered to patients with a failed urethrotomy. The availability of grafts can be a concern for both patients and surgeons. The potential for a tissue-engineered solution has been explored in recent years and is explored in this article. RECENT FINDINGS More than 80 preclinical studies have investigated a tissue-engineered approach for urethral reconstruction mostly using decellularized natural scaffolds with or without cell seeding. The animal models used in preclinical testing are not representative of disease processes seen with strictures in man. The available clinical studies were of small sample size and lacked control groups. The choice of biomaterial were mostly acellular matrices derived from natural extracellular matrix. The reported success rates in the pilot clinical studies were highly variable. SUMMARY The research with tissue engineering of the urethra has not yet been translated into a clinically available material. This is an area where much more research is needed and we would conclude that it is an area of unmet clinical need where users of tissue-engineered urethra in the future need to carry out a rigorous basic science programme and need to be cautious in drawing conclusions based on initial experience and report on long-term clinical results.
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The Fabrication and Evaluation of a Potential Biomaterial Produced with Stem Cell Sheet Technology for Future Regenerative Medicine. Stem Cells Int 2020; 2020:9567362. [PMID: 32104186 PMCID: PMC7035578 DOI: 10.1155/2020/9567362] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 11/04/2019] [Accepted: 11/29/2019] [Indexed: 12/17/2022] Open
Abstract
To date, the decellularized scaffold has been widely explored as a source of biological scaffolds for regenerative medicine. However, the acellular matrix derived from natural tissues and organs has a lot of defects, including the limited amount of autogenous tissue and surgical complication such as risk of blood loss, wound infection, pain, shock, and functional damage in the donor part of the body. In this study, we prepared acellular matrix using adipose-derived stem cell (ADSC) sheets and evaluate the cellular compatibility and immunoreactivity. The ADSC sheets were fabricated and subsequently decellularized using repeated freeze-thaw, Triton X-100 and SDS decellularization. Oral mucosal epithelial cells were seeded onto the decellularized ADSC sheets to evaluate the cell replantation ability, and silk fibroin was used as the control. Then, acellular matrix was transplanted onto subcutaneous tissue for 1 week or 3 weeks; H&E staining and immunohistochemical analysis of CD68 expression and quantitative real-time PCR (qPCR) were performed to evaluate the immunogenicity and biocompatibility. The ADSC sheet-derived ECM scaffolds preserved the three-dimensional architecture of ECM and retained the cytokines by Triton X-100 decellularization protocols. Compared with silk fibroin in vitro, the oral mucosal epithelial cells survived better on the decellularized ADSC sheets with an intact and consecutive epidermal cellular layer. Compared with porcine small intestinal submucosa (SIS) in vivo, the homogeneous decellularized ADSC sheets had less monocyte-macrophage infiltrating in vivo implantation. During 3 weeks after transplantation, the mRNA expression of cytokines, such as IL-4/IL-10, was obviously higher in decellularized ADSC sheets than that of porcine SIS. A Triton X-100 method can achieve effective cell removal, retain major ECM components, and preserve the ultrastructure of ADSC sheets. The decellularized ADSC sheets possess good recellularization capacity and excellent biocompatibility. This study demonstrated the potential suitability of utilizing acellular matrix from ADSC sheets for soft tissue regeneration and repair.
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Culenova M, Bakos D, Ziaran S, Bodnarova S, Varga I, Danisovic L. Bioengineered Scaffolds as Substitutes for Grafts for Urethra Reconstruction. MATERIALS 2019; 12:ma12203449. [PMID: 31652498 PMCID: PMC6829564 DOI: 10.3390/ma12203449] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 10/16/2019] [Accepted: 10/18/2019] [Indexed: 12/25/2022]
Abstract
Urethral defects originating from congenital malformations, trauma, inflammation or carcinoma still pose a great challenge to modern urology. Recent therapies have failed many times and have not provided the expected results. This negatively affects patients' quality of life. By combining cells, bioactive molecules, and biomaterials, tissue engineering can provide promising treatment options. This review focused on scaffold systems for urethra reconstruction. We also discussed different technologies, such as electrospinning and 3D bioprinting which provide great possibility for the preparation of a hollow structure with well-defined architecture.
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Affiliation(s)
- Martina Culenova
- Institute of Medical Biology, Genetics and Clinical Genetics, Faculty of Medicine, Comenius University, Sasinkova 4, 811 08 Bratislava, Slovakia.
| | - Dusan Bakos
- International Centre for Applied Research and Sustainable Technology, Jamnickeho 19, 841 04 Bratislava, Slovakia.
| | - Stanislav Ziaran
- Department of Urology, Faculty of Medicine, Comenius University, Limbova 5, 833 05 Bratislava, Slovakia.
| | - Simona Bodnarova
- Department of Biomedical Engineering and Measurement, Faculty of Mechanical Engineering, Technical University of Kosice, Letna 9, 042 00 Kosice, Slovakia.
| | - Ivan Varga
- Institute of Histology and Embryology, Faculty of Medicine, Comenius University, Sasinkova 4, 811 08 Bratislava, Slovakia.
| | - Lubos Danisovic
- Institute of Medical Biology, Genetics and Clinical Genetics, Faculty of Medicine, Comenius University, Sasinkova 4, 811 08 Bratislava, Slovakia.
- Regenmed Ltd., Medena 29, 811 01 Bratislava, Slovakia.
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MR and PET-CT monitoring of tissue-engineered vascular grafts in the ovine carotid artery. Biomaterials 2019; 216:119228. [DOI: 10.1016/j.biomaterials.2019.119228] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 05/16/2019] [Accepted: 05/25/2019] [Indexed: 12/19/2022]
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Culenova M, Ziaran S, Danisovic L. Cells Involved in Urethral Tissue Engineering: Systematic Review. Cell Transplant 2019; 28:1106-1115. [PMID: 31237144 PMCID: PMC6767881 DOI: 10.1177/0963689719854363] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The urethra is part of the lower urinary tract and its main role is urine voiding. Its
complex histological structure makes urethral tissue prone to various injuries with
complicated healing processes that often lead to scar formation. Urethral stricture
disease can affect both men and women. The occurrence of this pathology is more common in
men and thus are previous research has been mainly oriented on male urethra
reconstruction. However, commonly used surgical techniques show unsatisfactory results
because of complications. The new and progressively developing field of tissue engineering
offers promising solutions, which could be applied in the urethral regeneration of both
men´s and women´s urethras. The presented systematic review article offers an overview of
the cells that have been used in urethral tissue engineering so far. Urine-derived stem
cells show a great perspective in respect to urethral tissue engineering. They can be
easily harvested and are a promising autologous cell source for the needs of tissue
engineering techniques. The presented review also shows the importance of mechanical
stimuli application on maturating tissue. Sufficient vascularization and elimination of
stricture formation present the biggest challenges not only in customary surgical
management but also in tissue-engineering approaches.
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Affiliation(s)
- Martina Culenova
- Institute of Medical Biology, Genetics and Clinical Genetics, Faculty of Medicine, Comenius University, Slovakia
| | | | - Lubos Danisovic
- Institute of Medical Biology, Genetics and Clinical Genetics, Faculty of Medicine, Comenius University, Slovakia.,Regenmed Ltd., Slovakia
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Chen J, Hu H, Feng L, Zhu Q, Hancharou A, Liu B, Yan C, Xu Y, Guo R. Preparation and characterization of 3D porous conductive scaffolds with magnetic resonance enhancement in tissue engineering. Biomed Mater 2019; 14:045013. [DOI: 10.1088/1748-605x/ab1d9c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Rashidbenam Z, Jasman MH, Hafez P, Tan GH, Goh EH, Fam XI, Ho CCK, Zainuddin ZM, Rajan R, Nor FM, Shuhaili MA, Kosai NR, Imran FH, Ng MH. Overview of Urethral Reconstruction by Tissue Engineering: Current Strategies, Clinical Status and Future Direction. Tissue Eng Regen Med 2019; 16:365-384. [PMID: 31413941 DOI: 10.1007/s13770-019-00193-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 01/03/2019] [Accepted: 01/18/2019] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Urinary tract is subjected to a variety of disorders such as urethral stricture, which often develops as a result of scarring process. Urethral stricture can be treated by urethral dilation and urethrotomy; but in cases of long urethral strictures, substitution urethroplasty with genital skin and buccal mucosa grafts is the only option. However a number of complications such as infection as a result of hair growth in neo-urethra, and stone formation restrict the application of those grafts. Therefore, tissue engineering techniques recently emerged as an alternative approach, aiming to overcome those restrictions. The aim of this review is to provide a comprehensive coverage on the strategies employed and the translational status of urethral tissue engineering over the past years and to propose a combinatory strategy for the future of urethral tissue engineering. METHODs Data collection was based on the key articles published in English language in years between 2006 and 2018 using the searching terms of urethral stricture and tissue engineering on PubMed database. RESULTS Differentiation of mesenchymal stem cells into urothelial and smooth muscle cells to be used for urologic application does not offer any advantage over autologous urothelial and smooth muscle cells. Among studied scaffolds, synthetic scaffolds with proper porosity and mechanical strength is the best option to be used for urethral tissue engineering. CONCLUSION Hypoxia-preconditioned mesenchymal stem cells in combination with autologous cells seeded on a pre-vascularized synthetic and biodegradable scaffold can be said to be the best combinatory strategy in engineering of human urethra.
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Affiliation(s)
- Zahra Rashidbenam
- 1Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, 12th Floor, Clinical Block, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia
| | - Mohd Hafidzul Jasman
- 2Urology Unit, Department of Surgery, Universiti Kebangsaan Malaysia Medical Centre, 8th Floor, Clinical Block, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia
| | - Pezhman Hafez
- 3Faculty of Medicine and Health Science, UCSI University, No. 1 Jalan Puncak Menara Gading, Taman Connaught, 56000 Kuala Lumpur, Malaysia
| | - Guan Hee Tan
- 2Urology Unit, Department of Surgery, Universiti Kebangsaan Malaysia Medical Centre, 8th Floor, Clinical Block, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia
| | - Eng Hong Goh
- 2Urology Unit, Department of Surgery, Universiti Kebangsaan Malaysia Medical Centre, 8th Floor, Clinical Block, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia
| | - Xeng Inn Fam
- 2Urology Unit, Department of Surgery, Universiti Kebangsaan Malaysia Medical Centre, 8th Floor, Clinical Block, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia
| | - Christopher Chee Kong Ho
- 4School of Medicine, Taylor's University, No. 1 Jalan Taylor's, 47500 Subang Jaya, Selangor Darul Ehsan Malaysia
| | - Zulkifli Md Zainuddin
- 2Urology Unit, Department of Surgery, Universiti Kebangsaan Malaysia Medical Centre, 8th Floor, Clinical Block, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia
| | - Reynu Rajan
- 5Minimally Invasive, Upper Gastrointestinal and Bariatric Surgery Unit, Department of Surgery, Universiti Kebangsaan Malaysia Medical Centre, 8th Floor, Clinical Block, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia
| | - Fatimah Mohd Nor
- 6Plastic and Reconstructive Surgery Unit, Department of Surgery, Universiti Kebangsaan Malaysia Medical Centre, Clinical Block, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia
| | - Mohamad Aznan Shuhaili
- 5Minimally Invasive, Upper Gastrointestinal and Bariatric Surgery Unit, Department of Surgery, Universiti Kebangsaan Malaysia Medical Centre, 8th Floor, Clinical Block, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia
| | - Nik Ritza Kosai
- 5Minimally Invasive, Upper Gastrointestinal and Bariatric Surgery Unit, Department of Surgery, Universiti Kebangsaan Malaysia Medical Centre, 8th Floor, Clinical Block, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia
| | - Farrah Hani Imran
- 6Plastic and Reconstructive Surgery Unit, Department of Surgery, Universiti Kebangsaan Malaysia Medical Centre, Clinical Block, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia
| | - Min Hwei Ng
- 1Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, 12th Floor, Clinical Block, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia
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Jia Z, Guo H, Xie H, Zhou J, Wang Y, Bao X, Huang Y, Chen F. Construction of Pedicled Smooth Muscle Tissues by Combining the Capsule Tissue and Cell Sheet Engineering. Cell Transplant 2019; 28:328-342. [PMID: 30712374 PMCID: PMC6425107 DOI: 10.1177/0963689718821682] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The survival of engineered tissue requires the formation of its own capillary network, which can anastomose with the host vasculature after transplantation. Currently, while many strategies, such as modifying the scaffold material, adding endothelial cells, or angiogenic factors, have been researched, engineered tissue implanted in vivo cannot timely access to sufficient blood supply, leading to ischemic apoptosis or shrinkage. Constructing vascularized engineered tissue with its own axial vessels and subsequent pedicled transfer is promising to solve the problem of vascularization in tissue engineering. In this study, we used the tissue expander capsule as a novel platform for vascularizing autologous smooth muscle cell (SMC) sheets and fabricating vascularized engineered tissue with its own vascular pedicle. First, we verified which time point was the most effective for constructing an axial capsule vascular bed. Second, we compared the outcome of SMC sheet transplantation onto the expander capsule and classical dorsal subcutaneous tissue, which was widely used in other studies for vascularization. Finally, we transplanted multilayered SMC sheets onto the capsule bed twice to verify the feasibility of fabricating thick pedicled engineered smooth muscle tissues. The results indicated that the axial capsule tissue could be successfully induced, and the capsule tissue 1 week after full expansion was the most vascularized. Quantitative comparisons of thickness, vessel density, and apoptosis of cell sheet grafts onto two vascular beds proved that the axial capsule vascular bed was more favorable to the growth and vascularization of transplants than classical subcutaneous tissue. Furthermore, thick vascularized smooth muscle tissues with the vascular pedicle could be constructed by multi-transplanting cell sheets onto the capsule bed. The combination of axial capsule vascular bed and cell sheet engineering may provide an efficient strategy to overcome the problem of slow or insufficient vascularization in tissue engineering.
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Affiliation(s)
- Zhiming Jia
- 1 Department of Urology, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Hailin Guo
- 1 Department of Urology, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Hua Xie
- 1 Department of Urology, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Junmei Zhou
- 2 Department of Central Laboratory, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Yaping Wang
- 1 Department of Urology, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Xingqi Bao
- 1 Department of Urology, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Yichen Huang
- 1 Department of Urology, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Fang Chen
- 1 Department of Urology, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China
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Cell sheet technology: a promising strategy in regenerative medicine. Cytotherapy 2019; 21:3-16. [DOI: 10.1016/j.jcyt.2018.10.013] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 09/30/2018] [Accepted: 10/24/2018] [Indexed: 12/31/2022]
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41
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Beilan JA, Manimala NJ, Slongo J, Loeb A, Spiess PE, Carrion RE. Surgical Reconstruction After Penile Cancer Surgery. CURRENT SEXUAL HEALTH REPORTS 2017. [DOI: 10.1007/s11930-017-0134-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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