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García-Sobrino R, Casado-Losada I, Caltagirone C, García-Crespo A, García C, Rodríguez-Hernández J, Reinecke H, Gallardo A, Elvira C, Martínez-Campos E. Osteoblastic Cell Sheet Engineering Using P(VCL-HEMA)-Based Thermosensitive Hydrogels Doped with pVCL@Icariin Nanoparticles Obtained with Supercritical CO 2-SAS. Pharmaceutics 2024; 16:1063. [PMID: 39204408 PMCID: PMC11359487 DOI: 10.3390/pharmaceutics16081063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2024] [Revised: 08/03/2024] [Accepted: 08/10/2024] [Indexed: 09/04/2024] Open
Abstract
New clinical strategies for treating severe bone and cartilage injuries are required, especially for use in combination with implant procedures. For this purpose, p(VCL-co-HEMA) thermosensitive hydrogels have been activated with icariin-loaded nanoparticles to be used as bone-cell-harvesting platforms. Supercritical CO2-SAS technology has been applied to encapsulate icariin, a small molecule that is involved in osteoblastic differentiation. Thus, physical-chemical analysis, including swelling and transmittance, showed the impact of HEMA groups in hydrogel composition. Moreover, icariin (ICA) release from p(VCL-co-HEMA) platforms, including pVCL@ICA nanoparticles, has been studied to evaluate their efficacy in relevant conditions. Finally, the thermosensitive hydrogels' cell compatibility, transplant efficiency, and bone differentiation capacity were tested. This study identifies the optimal formulations for icariin-activated hydrogels for both control and HEMA formulations. Using this technique, osteoblastic sheets that were rich in collagen type I were successfully transplanted and recultivated, maintaining an optimal extracellular matrix (ECM) composition. These findings suggest a new cell-sheet-based therapy for bone regeneration purposes using customized and NP-activated pVCL-based cell platforms.
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Affiliation(s)
- Rubén García-Sobrino
- Polymer Functionalization Group, Departamento de Química Macromolecular Aplicada, Instituto de Ciencia y Tecnología de Polímeros-Consejo Superior de Investigaciones Científicas (ICTP-CSIC) Calle Juan de la Cierva, n° 3, 28006 Madrid, Spain; (R.G.-S.); (C.G.); (H.R.)
- Group of Organic Synthesis and Bioevaluation, Instituto Pluridisciplinar, Universidad Complutense de Madrid (UCM), Associated Unit to the ICTP-IQM-CSIC, Paseo Juan XXIII, n° 1, 28040 Madrid, Spain
- Department of Applied Mathematics, Materials Science and Engineering and Electronic Technology, Universidad Rey Juan Carlos, Calle Tulipán s/n, 28933 Móstoles, Spain
| | - Isabel Casado-Losada
- Polymer Functionalization Group, Departamento de Química Macromolecular Aplicada, Instituto de Ciencia y Tecnología de Polímeros-Consejo Superior de Investigaciones Científicas (ICTP-CSIC) Calle Juan de la Cierva, n° 3, 28006 Madrid, Spain; (R.G.-S.); (C.G.); (H.R.)
- Group of Organic Synthesis and Bioevaluation, Instituto Pluridisciplinar, Universidad Complutense de Madrid (UCM), Associated Unit to the ICTP-IQM-CSIC, Paseo Juan XXIII, n° 1, 28040 Madrid, Spain
| | - Carmen Caltagirone
- Polymer Functionalization Group, Departamento de Química Macromolecular Aplicada, Instituto de Ciencia y Tecnología de Polímeros-Consejo Superior de Investigaciones Científicas (ICTP-CSIC) Calle Juan de la Cierva, n° 3, 28006 Madrid, Spain; (R.G.-S.); (C.G.); (H.R.)
- Group of Organic Synthesis and Bioevaluation, Instituto Pluridisciplinar, Universidad Complutense de Madrid (UCM), Associated Unit to the ICTP-IQM-CSIC, Paseo Juan XXIII, n° 1, 28040 Madrid, Spain
| | - Ana García-Crespo
- Polymer Functionalization Group, Departamento de Química Macromolecular Aplicada, Instituto de Ciencia y Tecnología de Polímeros-Consejo Superior de Investigaciones Científicas (ICTP-CSIC) Calle Juan de la Cierva, n° 3, 28006 Madrid, Spain; (R.G.-S.); (C.G.); (H.R.)
- Group of Organic Synthesis and Bioevaluation, Instituto Pluridisciplinar, Universidad Complutense de Madrid (UCM), Associated Unit to the ICTP-IQM-CSIC, Paseo Juan XXIII, n° 1, 28040 Madrid, Spain
| | - Carolina García
- Polymer Functionalization Group, Departamento de Química Macromolecular Aplicada, Instituto de Ciencia y Tecnología de Polímeros-Consejo Superior de Investigaciones Científicas (ICTP-CSIC) Calle Juan de la Cierva, n° 3, 28006 Madrid, Spain; (R.G.-S.); (C.G.); (H.R.)
| | - Juan Rodríguez-Hernández
- Polymer Functionalization Group, Departamento de Química Macromolecular Aplicada, Instituto de Ciencia y Tecnología de Polímeros-Consejo Superior de Investigaciones Científicas (ICTP-CSIC) Calle Juan de la Cierva, n° 3, 28006 Madrid, Spain; (R.G.-S.); (C.G.); (H.R.)
| | - Helmut Reinecke
- Polymer Functionalization Group, Departamento de Química Macromolecular Aplicada, Instituto de Ciencia y Tecnología de Polímeros-Consejo Superior de Investigaciones Científicas (ICTP-CSIC) Calle Juan de la Cierva, n° 3, 28006 Madrid, Spain; (R.G.-S.); (C.G.); (H.R.)
| | - Alberto Gallardo
- Polymer Functionalization Group, Departamento de Química Macromolecular Aplicada, Instituto de Ciencia y Tecnología de Polímeros-Consejo Superior de Investigaciones Científicas (ICTP-CSIC) Calle Juan de la Cierva, n° 3, 28006 Madrid, Spain; (R.G.-S.); (C.G.); (H.R.)
| | - Carlos Elvira
- Polymer Functionalization Group, Departamento de Química Macromolecular Aplicada, Instituto de Ciencia y Tecnología de Polímeros-Consejo Superior de Investigaciones Científicas (ICTP-CSIC) Calle Juan de la Cierva, n° 3, 28006 Madrid, Spain; (R.G.-S.); (C.G.); (H.R.)
| | - Enrique Martínez-Campos
- Polymer Functionalization Group, Departamento de Química Macromolecular Aplicada, Instituto de Ciencia y Tecnología de Polímeros-Consejo Superior de Investigaciones Científicas (ICTP-CSIC) Calle Juan de la Cierva, n° 3, 28006 Madrid, Spain; (R.G.-S.); (C.G.); (H.R.)
- Group of Organic Synthesis and Bioevaluation, Instituto Pluridisciplinar, Universidad Complutense de Madrid (UCM), Associated Unit to the ICTP-IQM-CSIC, Paseo Juan XXIII, n° 1, 28040 Madrid, Spain
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2
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Godoi MM, Reis EM, Koepp J, Ferreira J. Perspective from developers: Tissue-engineered products for skin wound healing. Int J Pharm 2024; 660:124319. [PMID: 38866084 DOI: 10.1016/j.ijpharm.2024.124319] [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: 04/03/2024] [Revised: 05/24/2024] [Accepted: 06/05/2024] [Indexed: 06/14/2024]
Abstract
Tissue-engineered products (TEPs) are at the forefront of developmental medicines, precisely where monoclonal antibodies and recombinant cytokines were 30 years ago. TEPs development for treating skin wounds has become a fast-growing field as it offers the potential to find novel therapeutic approaches for treating pathologies that currently have limited or no effective alternatives. This review aims to provide the reader with the process of translating an idea from the laboratory bench to clinical practice, specifically in the context of TEPs designing for skin wound healing. It encompasses historical perspectives, approved therapies, and offers a distinctive insight into the regulatory framework in Brazil. We explore the essential guidelines for quality testing, and nonclinical proof-of-concept considering the Brazilian Network of Experts in Advanced Therapies (RENETA) and International Standards and Guidelines (ICH e ISO). Adopting a multifaceted approach, our discussion incorporates scientific and industrial perspectives, addressing quality, biosafety, non-clinical viability, clinical trial and real-word data for pharmacovigilance demands. This comprehensive analysis presents a panoramic view of the development of skin TEPs, offering insights into the evolving landscape of this dynamic and promising field.
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Affiliation(s)
- Manuella Machado Godoi
- Graduate Program in Pharmacology, Center of Biological Sciences, Federal University of Santa Catarina- UFSC, Florianópolis, SC, Brazil.
| | - Emily Marques Reis
- Department of Chemical and Food Engineering, Federal University of Santa Catarina- UFSC, Florianópolis, SC, Brazil; Biocelltis Biotecnologia, Florianópolis, SC, Brazil
| | - Janice Koepp
- Biocelltis Biotecnologia, Florianópolis, SC, Brazil
| | - Juliano Ferreira
- Graduate Program in Pharmacology, Center of Biological Sciences, Federal University of Santa Catarina- UFSC, Florianópolis, SC, Brazil.
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3
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Abuharb AI, Alzarroug AF, Algahtani SN, Alghamdi HK, Alosaimi FA, Alsuwayna N, Almughira AI. The Impact and Implications of Regenerative Medicine in Urology. Cureus 2024; 16:e52264. [PMID: 38352111 PMCID: PMC10863929 DOI: 10.7759/cureus.52264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/14/2024] [Indexed: 02/16/2024] Open
Abstract
Urology focuses on the treatment of genitourinary disorders through therapies ranging from lifestyle changes to advanced surgeries; the field has recently incorporated robotic and minimally invasive technologies that have improved patient outcomes and reduced hospital stays and complications. However, these methods still have certain limitations. Regenerative medicine, focusing on natural repair abilities, can be an effective and safer alternative. This review aims to examine the impact of regenerative medicine in urology. We adopted a systematic review design by following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. An exhaustive online literature search involving the databases PubMed, the Cochrane Central Register of Controlled Trials (CENTRAL), and Google Scholar was conducted spanning the period between January 2010 and October 2023. Data were extracted from studies on regenerative medicine in urology with a special focus on efficacy and safety. Data from 16 studies were analyzed, which showed that cell therapy, biological materials, and tissue engineering are generally used in the field of urinary diseases. The main applications include the regeneration of urinary tissue, the correction of urinary incontinence, the treatment of erectile dysfunction, the reconstruction of ureteric defects, and the formation of bladder tissue. The study findings generally lack definitive conclusions on effectiveness and safety. While our results indicate that regenerative medicine is successful on a subjective level, more clinical trials are needed to establish its effectiveness and safety.
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Affiliation(s)
- Abdullah I Abuharb
- College of Medicine, Imam Mohammad Ibn Saud Islamic University, Riyadh, SAU
| | | | - Saad N Algahtani
- College of Medicine, Imam Mohammad Ibn Saud Islamic University, Riyadh, SAU
| | - Hatan K Alghamdi
- College of Medicine, Imam Mohammad Ibn Saud Islamic University, Riyadh, SAU
| | - Fahad A Alosaimi
- College of Medicine, Imam Mohammad Ibn Saud Islamic University, Riyadh, SAU
| | - Nasser Alsuwayna
- College of Medicine, Imam Mohammad Ibn Saud Islamic University, Riyadh, SAU
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Chae S, Choi YJ, Cho DW. Mechanically and biologically promoted cell-laden constructs generated using tissue-specific bioinks for tendon/ligament tissue engineering applications. Biofabrication 2022; 14. [PMID: 35086074 DOI: 10.1088/1758-5090/ac4fb6] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 01/27/2022] [Indexed: 11/11/2022]
Abstract
Tendon and ligament tissues provide stability and mobility crucial for musculoskeletal function, but are particularly prone to injury. Owing to poor innate healing capacity, the regeneration of mature and functional tendon/ligament (T/L) poses a formidable clinical challenge. Advanced bioengineering strategies to develop biomimetic tissue implants are highly desired for the treatment of T/L injuries. Here, we presented a cell-based tissue engineering strategy to generate cell-laden tissue constructs comprising stem cells and tissue-specific bioinks using 3D cell-printing technology. We implemented an in vitro preconditioning approach to guide semi-organized T/L-like formation before the in vivo application of cell-printed implants. During in vitro maturation, tissue-specific decellularized extracellular matrix-based cellular constructs facilitated long-term in vitro culture with high cell viability and promoted tenogenesis with enhanced cellular/structural anisotropy. Moreover, we demonstrated improved cell survival/retention upon in vivo implantation of pre-matured constructs in nude mice with de novo tendon formation and improved mechanical strength. Although in vivo mechanical properties of the cell-printed implants were lower than those of human T/L tissues, the results of this study may have significant implications for future cell-based therapies in tendon and ligament regeneration and translational medicine.
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Affiliation(s)
- Suhun Chae
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, Kyungbuk 790-784, Gyeongsangbuk-do, Pohang, Gyeongsangbuk-do, 37679, Korea (the Republic of)
| | - Yeong-Jin Choi
- Department of Advanced Biomaterials Research, Korea Institute of Materials Science, 797, Changwon-daero, Seongsan-gu, Gyeongsangnam-do, Changwon, 51508, Korea (the Republic of)
| | - Dong-Woo Cho
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, Kyungbuk 790-784, KOREA, Pohang, 37673, Korea (the Republic of)
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5
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Fukunishi T, Lui C, Ong CS, Dunn T, Xu S, Smoot C, Smalley R, Harris J, Gabriele P, Santhanam L, Lu S, Hibino N. Extruded poly (glycerol sebacate) and polyglycolic acid vascular graft forms a neoartery. J Tissue Eng Regen Med 2022; 16:346-354. [PMID: 35084808 DOI: 10.1002/term.3282] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/17/2021] [Accepted: 01/01/2022] [Indexed: 11/09/2022]
Abstract
In the ongoing search for the optimal biomaterial for tissue engineered vascular grafts (TEVGs), poly (glycerol sebacate) (PGS) has emerged as a new potential candidate. We have utilized a novel method to create unique, pore-free, extruded PGS grafts with and without a supportive exterior layer of polyglycolic acid (PGA). The 1 mm diameter by 5 mm length TEVGs were implanted in a rat model of infrarenal abdominal aorta interposition grafting. Three months after implantation, TEVGs comprised of extruded PGS with an external PGA braid demonstrated a patency rate of 9/10 (90%) with no signs of dilatation, dehiscence, or rupture. The PGS/PGA graft was remodeled into a neoartery with complete endothelialization of the neoartery lumen and formation of smooth muscle actinin multilayers as demonstrated via immunohistochemistry. Formation and maturation of extracellular matrix material were also observed, with amounts of elastin and collagen comparable to native rat aorta. No significant host inflammatory response was observed. These findings suggest the combination of an extruded PGS tube with an external reinforcing PGA braid is a promising material for small diameter TEVGs.
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Affiliation(s)
- Takuma Fukunishi
- Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Cecillia Lui
- Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Chin Siang Ong
- Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Tyler Dunn
- Section of Cardiac Surgery, University of Chicago, Chicago, Illinois, USA
| | - Shanxiu Xu
- Section of Cardiac Surgery, University of Chicago, Chicago, Illinois, USA
| | | | - Ryan Smalley
- The Secant Group, LLC, Telford, Pennsylvania, USA
| | | | | | - Lakshmi Santhanam
- Department of Anesthesiology, Johns Hopkins Hospital, Baltimore, Maryland, USA
| | - Steven Lu
- The Secant Group, LLC, Telford, Pennsylvania, USA
| | - Narutoshi Hibino
- Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, Maryland, USA.,Section of Cardiac Surgery, University of Chicago, Chicago, Illinois, USA
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Sharma S, Muthu S, Jeyaraman M, Ranjan R, Jha SK. Translational products of adipose tissue-derived mesenchymal stem cells: Bench to bedside applications. World J Stem Cells 2021; 13:1360-1381. [PMID: 34786149 PMCID: PMC8567449 DOI: 10.4252/wjsc.v13.i10.1360] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 07/02/2021] [Accepted: 08/30/2021] [Indexed: 02/06/2023] Open
Abstract
With developments in the field of tissue engineering and regenerative medicine, the use of biological products for the treatment of various disorders has come into the limelight among researchers and clinicians. Among all the available biological tissues, research and exploration of adipose tissue have become more robust. Adipose tissue engineering aims to develop by-products and their substitutes for their regenerative and immunomodulatory potential. The use of biodegradable scaffolds along with adipose tissue products has a major role in cellular growth, proliferation, and differentiation. Adipose tissue, apart from being the powerhouse of energy storage, also functions as the largest endocrine organ, with the release of various adipokines. The progenitor cells among the heterogeneous population in the adipose tissue are of paramount importance as they determine the capacity of regeneration of these tissues. The results of adipose-derived stem-cell assisted fat grafting to provide numerous growth factors and adipokines that improve vasculogenesis, fat graft integration, and survival within the recipient tissue and promote the regeneration of tissue are promising. Adipose tissue gives rise to various by-products upon processing. This article highlights the significance and the usage of various adipose tissue by-products, their individual characteristics, and their clinical applications.
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Affiliation(s)
- Shilpa Sharma
- Department of Pediatric Surgery, All India Institute of Medical Sciences, New Delhi 110029, India
- Indian Stem Cell Study Group, Lucknow, Uttar Pradesh 226010, India
| | - Sathish Muthu
- Indian Stem Cell Study Group, Lucknow, Uttar Pradesh 226010, India
- Department of Orthopaedics, Government Medical College and Hospital, Dindigul, Tamil Nadu 624304, India
- Research Scholar, Department of Biotechnology, School of Engineering and Technology, Greater Noida, Sharda University, Uttar Pradesh 201306, India
| | - Madhan Jeyaraman
- Indian Stem Cell Study Group, Lucknow, Uttar Pradesh 226010, India
- Research Scholar, Department of Biotechnology, School of Engineering and Technology, Greater Noida, Sharda University, Uttar Pradesh 201306, India
- Department of Orthopaedics, School of Medical Sciences and Research, Sharda University, Greater Noida, Uttar Pradesh 201306, India
| | - Rajni Ranjan
- Department of Orthopaedics, School of Medical Sciences and Research, Sharda University, Greater Noida, Uttar Pradesh 201306, India
| | - Saurabh Kumar Jha
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, Uttar Pradesh 201306, India
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Wang Z, Kapadia W, Li C, Lin F, Pereira RF, Granja PL, Sarmento B, Cui W. Tissue-specific engineering: 3D bioprinting in regenerative medicine. J Control Release 2021; 329:237-256. [DOI: 10.1016/j.jconrel.2020.11.044] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/19/2020] [Accepted: 11/23/2020] [Indexed: 12/18/2022]
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Wasyłeczko M, Sikorska W, Chwojnowski A. Review of Synthetic and Hybrid Scaffolds in Cartilage Tissue Engineering. MEMBRANES 2020; 10:E348. [PMID: 33212901 PMCID: PMC7698415 DOI: 10.3390/membranes10110348] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/09/2020] [Accepted: 11/11/2020] [Indexed: 02/06/2023]
Abstract
Cartilage tissue is under extensive investigation in tissue engineering and regenerative medicine studies because of its limited regenerative potential. Currently, many scaffolds are undergoing scientific and clinical research. A key for appropriate scaffolding is the assurance of a temporary cellular environment that allows the cells to function as in native tissue. These scaffolds should meet the relevant requirements, including appropriate architecture and physicochemical and biological properties. This is necessary for proper cell growth, which is associated with the adequate regeneration of cartilage. This paper presents a review of the development of scaffolds from synthetic polymers and hybrid materials employed for the engineering of cartilage tissue and regenerative medicine. Initially, general information on articular cartilage and an overview of the clinical strategies for the treatment of cartilage defects are presented. Then, the requirements for scaffolds in regenerative medicine, materials intended for membranes, and methods for obtaining them are briefly described. We also describe the hybrid materials that combine the advantages of both synthetic and natural polymers, which provide better properties for the scaffold. The last part of the article is focused on scaffolds in cartilage tissue engineering that have been confirmed by undergoing preclinical and clinical tests.
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Affiliation(s)
- Monika Wasyłeczko
- Nałęcz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Trojdena 4 str., 02-109 Warsaw, Poland; (W.S.); (A.C.)
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Joshi Navare K, Colombani T, Rezaeeyazdi M, Bassous N, Rana D, Webster T, Memic A, Bencherif SA. Needle-injectable microcomposite cryogel scaffolds with antimicrobial properties. Sci Rep 2020; 10:18370. [PMID: 33110210 PMCID: PMC7591905 DOI: 10.1038/s41598-020-75196-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 10/01/2020] [Indexed: 12/24/2022] Open
Abstract
Porous three-dimensional hydrogel scaffolds have an exquisite ability to promote tissue repair. However, because of their high water content and invasive nature during surgical implantation, hydrogels are at an increased risk of bacterial infection. Recently, we have developed elastic biomimetic cryogels, an advanced type of polymeric hydrogel, that are syringe-deliverable through hypodermic needles. These needle-injectable cryogels have unique properties, including large and interconnected pores, mechanical robustness, and shape-memory. Like hydrogels, cryogels are also susceptible to colonization by microbial pathogens. To that end, our minimally invasive cryogels have been engineered to address this challenge. Specifically, we hybridized the cryogels with calcium peroxide microparticles to controllably produce bactericidal hydrogen peroxide. Our novel microcomposite cryogels exhibit antimicrobial properties and inhibit antibiotic-resistant bacteria (MRSA and Pseudomonas aeruginosa), the most common cause of biomaterial implant failure in modern medicine. Moreover, the cryogels showed negligible cytotoxicity toward murine fibroblasts and prevented activation of primary bone marrow-derived dendritic cells ex vivo. Finally, in vivo data suggested tissue integration, biodegradation, and minimal host inflammatory responses when the antimicrobial cryogels, even when purposely contaminated with bacteria, were subcutaneously injected in mice. Collectively, these needle-injectable microcomposite cryogels show great promise for biomedical applications, especially in tissue engineering and regenerative medicine.
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Affiliation(s)
- Kasturi Joshi Navare
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
| | - Thibault Colombani
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
| | | | - Nicole Bassous
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
| | - Devyesh Rana
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
| | - Thomas Webster
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA
- Wenzhou Institute for Biomaterials and Engineering, Wenzhou, 325001, China
| | - Adnan Memic
- Center of Nanotechnology, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Sidi A Bencherif
- Department of Chemical Engineering, Northeastern University, Boston, MA, 02115, USA.
- Department of Bioengineering, Northeastern University, Boston, MA, 02115, USA.
- Sorbonne University, UTC CNRS UMR 7338, Biomechanics and Bioengineering (BMBI), University of Technology of Compiègne, 60203, Compiègne, France.
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
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10
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Zhang R, Deng SL, Lian ZX, Yu K. Immunosuppression in uterine transplantation. Transpl Immunol 2020; 63:101335. [PMID: 32927095 DOI: 10.1016/j.trim.2020.101335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 09/09/2020] [Indexed: 11/25/2022]
Abstract
Uterine transplantation (UTx) is the only effective treatment for uterine infertility patients to become genetic mothers. After decades of research, the surgical methods of UTx are very developed. There are numerous factors that affect the results of UTx, such as selection of the donor uterus before transplantation, immunosuppressive therapy post-transplantation, rejection monitoring, and immune tolerance. Studies have shown that immune rejection is a crucial factor affecting the survival rate after organ transplantation. Unlike liver or kidney transplantation, the aim of UTx is to obtain a functional uterus that is able to support successful pregnancy and birth of a healthy fetus. Because of the unique purpose of UTx, its immunosuppressive program is relatively specialized. Some immunosuppressive agents can cause perinatal complications, and inducing immune tolerance is necessary to resolve these side effects. Further understanding of the immune mechanism of UTx and the continuous development of new immunosuppressive agents, combined with the application of assisted reproductive technology, will be more conducive to the realization of UTx to breed offspring.
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Affiliation(s)
- Rui Zhang
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Shou-Long Deng
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, 100101 Beijing, China.
| | - Zheng-Xing Lian
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Kun Yu
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
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11
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Thomas A, Hawthorne WJ, Burlak C. Xenotransplantation literature update, November/December 2019. Xenotransplantation 2020; 27:e12582. [PMID: 31984549 DOI: 10.1111/xen.12582] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Accepted: 01/14/2020] [Indexed: 12/13/2022]
Abstract
The ever-increasing disparity between the lack of organ donors and patients on the transplant waiting list is increasing worldwide. For the past several decades xenotransplantation has led the way to correct this deficit and remains clearly the only feasible option to provide a means to meet the demand for patients in need of an organ transplant. Xenotransplantation's ability to provide a specifically designed unlimited supply of organs, suited to treat the various needs for transplant organs and cells, has recently been championed by successful pre-clinical trials that have run long-term in non-human primate studies. In this review we show how these improvements have come about due to long-term dedicated research and recent advances in biomedical engineering technology, such as genome editing tools including zinc finger nucleases, TALEN, and CRISPER/Cas9 which have paved the way for significant breakthroughs in improving xenograft outcomes through genetic modifications to the donor source pig. Other novel approaches include the development of decellularized porcine tissue, such as corneas which can now be transplanted into patients with the minimal need for immunosuppression or other side effects. Further genetic variants of the porcine genome are also now being optimized to abrogate rejection. The emergence of new modalities such as; mesenchymal stem cells, donor thymic vascularization, in vivo bioreactors, chemokine and cytokine therapies have come to show improvements in xenograft outcomes. Furthermore, new studies confirm the safety status of using porcine xenografts, verifying that with current technologies and approaches, the issue of PERV transmission is a moot point. These breakthroughs and technological advancements push the reality of xenotransplantation one step closer to the clinic.
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Affiliation(s)
- Adwin Thomas
- The Centre for Transplant & Renal Research, The Westmead Institute for Medical Research, Westmead, NSW, Australia
| | - Wayne J Hawthorne
- The Centre for Transplant & Renal Research, The Westmead Institute for Medical Research, Westmead, NSW, Australia.,The Department of Surgery, University of Sydney, Westmead Hospital, Westmead, NSW, Australia
| | - Christopher Burlak
- Department of Surgery, Schulze Diabetes Institute, University of Minnesota Medical School, Minneapolis, Minnesota
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Iga C, Agata T, Marcin Ł, Natalia F, Justyna KL. Ciprofloxacin-Modified Degradable Hybrid Polyurethane-Polylactide Porous Scaffolds Developed for Potential Use as an Antibacterial Scaffold for Regeneration of Skin. Polymers (Basel) 2020; 12:E171. [PMID: 31936529 PMCID: PMC7022267 DOI: 10.3390/polym12010171] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/20/2019] [Accepted: 12/21/2019] [Indexed: 01/21/2023] Open
Abstract
The aim of the performed study was to fabricate an antibacterial and degradable scaffold that may be used in the field of skin regeneration. To reach the degradation criterion for the biocompatible polyurethane (PUR), obtained by using amorphous α,ω-dihydroxy(ethylene-butylene adipate) macrodiol (PEBA), was used and processed with so-called "fast-degradable" polymer polylactide (PLA) (5 or 10 wt %). To meet the antibacterial requirement obtained, hybrid PUR-PLA scaffolds (HPPS) were modified with ciprofloxacin (Cipro) (2 or 5 wt %) and the fluoroquinolone antibiotic inhibiting growth of bacteria, such as Pseudomonas aeruginosa, Escherichia coli, and Staphylococcus aureus, which are the main causes of wound infections. Performed studies showed that Cipro-modified HPPS, obtained by using 5% of PLA, possess suitable mechanical characteristics, morphology, degradation rates, and demanded antimicrobial properties to be further developed as potential scaffolds for skin tissue engineering.
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Affiliation(s)
- Carayon Iga
- Department of Polymers Technology, Faculty of Chemistry, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland;
| | - Terebieniec Agata
- Department of Molecular Biotechnology and Microbiology, Faculty of Chemistry, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland; (T.A.); (F.N.)
| | - Łapiński Marcin
- Department of Solid State Physics, Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland;
| | - Filipowicz Natalia
- Department of Molecular Biotechnology and Microbiology, Faculty of Chemistry, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland; (T.A.); (F.N.)
| | - Kucińska-Lipka Justyna
- Department of Polymers Technology, Faculty of Chemistry, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland;
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13
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Isidan A, Liu S, Li P, Lashmet M, Smith LJ, Hara H, Cooper DKC, Ekser B. Decellularization methods for developing porcine corneal xenografts and future perspectives. Xenotransplantation 2019; 26:e12564. [PMID: 31659811 DOI: 10.1111/xen.12564] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 09/11/2019] [Accepted: 10/13/2019] [Indexed: 12/23/2022]
Abstract
Corneal transplantation is the only option to cure corneal opacities. However, there is an imbalance between supply and demand of corneal tissues in the world. To solve the problem of corneal shortage, corneal xenotransplantation studies have been implemented in the past years using porcine corneas. The corneal xenografts could come from (a) wild-type pigs, (b) genetically engineered pigs, (c) decellularized porcine corneas, and (d) decellularized porcine corneas that are recellularized with human corneal cells, eventually with patients' own cells, as in all type of xenografts. All approaches except, the former would reduce or mitigate recipient immune responses. Although several techniques in decellularization have been reported, there is still no standardized protocol for the complete decellularization of corneal tissue. Herein, we reviewed different decellularization methods for porcine corneas based on the mechanism of action, decellularization efficacy, biocompatibility, and the undesirable effects on corneal ultrastructure. We compared 9 decellularization methods including: (a) sodium dodecyl sulfate, (b) triton x-100, (c) hypertonic saline, (d) human serum with electrophoresis, (e) high hydrostatic pressure, (f) freeze-thaw, (h) nitrogen gas, (h) phospholipase A2 , and (i) glycerol with chemical crosslinking methods. It appears that combined methods could be more useful to perform efficient corneal decellularization.
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Affiliation(s)
- Abdulkadir Isidan
- Transplant Division, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Shaohui Liu
- Department of Ophthalmology, Glick Eye Institute, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Ping Li
- Transplant Division, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Matthew Lashmet
- Transplant Division, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Lester J Smith
- Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, IN, USA.,3D Bioprinting Core, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Hidetaka Hara
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - David K C Cooper
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Burcin Ekser
- Transplant Division, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
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Injectable Hyaluronic Acid- co-Gelatin Cryogels for Tissue-Engineering Applications. MATERIALS 2018; 11:ma11081374. [PMID: 30087295 PMCID: PMC6119876 DOI: 10.3390/ma11081374] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 08/01/2018] [Accepted: 08/03/2018] [Indexed: 12/31/2022]
Abstract
Polymeric scaffolds such as hydrogels can be engineered to restore, maintain, or improve impaired tissues and organs. However, most hydrogels require surgical implantation that can cause several complications such as infection and damage to adjacent tissues. Therefore, developing minimally invasive strategies is of critical importance for these purposes. Herein, we developed several injectable cryogels made out of hyaluronic acid and gelatin for tissue-engineering applications. The physicochemical properties of hyaluronic acid combined with the intrinsic cell-adhesion properties of gelatin can provide suitable physical support for the attachment, survival, and spreading of cells. The physical characteristics of pure gelatin cryogels, such as mechanics and injectability, were enhanced once copolymerized with hyaluronic acid. Reciprocally, the adhesion of 3T3 cells cultured in hyaluronic acid cryogels was enhanced when formulated with gelatin. Furthermore, cryogels had a minimal effect on bone marrow dendritic cell activation, suggesting their cytocompatibility. Finally, in vitro studies revealed that copolymerizing gelatin with hyaluronic acid did not significantly alter their respective intrinsic biological properties. These findings suggest that hyaluronic acid-co-gelatin cryogels combined the favorable inherent properties of each biopolymer, providing a mechanically robust, cell-responsive, macroporous, and injectable platform for tissue-engineering applications.
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15
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In vitro evaluation of decontamination effects on mechanical properties of fibrin membrane. Med J Islam Repub Iran 2018; 32:2. [PMID: 29977870 PMCID: PMC6025911 DOI: 10.14196/mjiri.32.2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Indexed: 11/18/2022] Open
Abstract
Background: Tissue engineering has been investigated as a potential method for healing traumatized tissues. Biomaterials are material devices or implants used to repair or replace native body tissues and organs. The present study was conducted to evaluate the effects of decontamination methods on biological/mechanical properties and degradation/adhesion test of the platelet-rich fibrin (PRF) membranes to compare these properties with intact membranes as a biological biomaterial.
Methods: The in vitro degradation tests were conducted by placing the equal sizes of (i) intact PRF membrane, (ii) PRF membrane sterilized by autoclave (iii), ultraviolet (UV), and (iiii) gamma irradiation in phosphate buffer solution on a shaker. The degradation profiles were expressed. Adhesion test was performed by counting adhered mouse fibroblast and sterilized fibrin membrane was compared to normal fibrin membrane by different sterilization methods.
Results: The preliminary findings of sterilized PRF membranes showed that UV exposure (p<0.05) and autoclaved fibrin membranes (p<0.01) have significantly lower degradability compared to normal fibrin membranes. Gamma irradiation is similar to normal membrane in degradability. Cell adherence in all groups of fibrin membrane was significantly lower than the group without membrane, but there was no significant difference between intact and sterilized groups of fibrin membranes.
Conclusion: Sterilization of fibrin membrane with different protocols does not have any adverse effects on cell adhesion; however, cell adherence is naturally very weak even in normal membranes. Also, it seems that ultraviolet ray polymerizes fibrin filaments and merges them to each other and increases the ability of fibrin membrane against degradation. Autoclaved fibrin membrane content proteins are denatured because of pressure and heat and show an increase in hardness and stability against degradation.
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16
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Jundziłł A, Pokrywczyńska M, Adamowicz J, Kowalczyk T, Nowacki M, Bodnar M, Marszałek A, Frontczak-Baniewicz M, Mikułowski G, Kloskowski T, Gatherwright J, Drewa T. Vascularization Potential of Electrospun Poly(L-Lactide-co-Caprolactone) Scaffold: The Impact for Tissue Engineering. Med Sci Monit 2017; 23:1540-1551. [PMID: 28360409 PMCID: PMC5386432 DOI: 10.12659/msm.899659] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Electrospun nanofibers have widespread putative applications in the field of regenerative medicine and tissue engineering. When compared to naturally occurring collagen matrices, electrospun nanofiber scaffolds have two distinct advantages: they do not induce a foreign body reaction and they are not at risk for biological contamination. However, the exact substrate, structure, and production methods have yet to be defined. MATERIAL AND METHODS In the current study, tubular-shaped poly(L-lactide-co-caprolactone) (PLCL) constructs produced using electrospinning technology were evaluated for their potential application in the field of tissue regeneration in two separate anatomic locations: the skin and the abdomen. The constructs were designed to have an internal diameter of 3 mm and thickness of 200 μm. Using a rodent model, 20 PLCL tubular constructs were surgically implanted in the abdominal cavity and subcutaneously. The constructs were then evaluated histologically using electron microscopy at 6 weeks post-implantation. RESULTS Histological evaluation and analysis using scanning electron microscopy showed that pure scaffolds by themselves were able to induce angiogenesis after implantation in the rat model. Vascularization was observed in both tested groups; however, better results were obtained after intraperitoneal implantation. Formation of more and larger vessels that migrated inside the scaffold was observed after implantation into the peritoneum. In this group no evidence of inflammation and better integration of scaffold with host tissue were noticed. Subcutaneous implantation resulted in more fibrotic reaction, and differences in cell morphology were also observed between the two tested groups. CONCLUSIONS This study provides a standardized evaluation of a PLCL conduit structure in two different anatomic locations, demonstrating the excellent ability of the structure to achieve vascularization. Functional, histological, and mechanical data clearly indicate prospective clinical utilization of PLCL in critical size defect regeneration.
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Affiliation(s)
- Arkadiusz Jundziłł
- Chair of Urology, Department of Regenerative Medicine, Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland.,Department of Plastic, Reconstructive and Aesthetic Surgery, Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland
| | - Marta Pokrywczyńska
- Chair of Urology, Department of Regenerative Medicine, Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland
| | - Jan Adamowicz
- Chair of Urology, Department of Regenerative Medicine, Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland
| | - Tomasz Kowalczyk
- Institute of Fundamental Technological Research, Polish Academy of Science, Warsaw, Poland
| | - Maciej Nowacki
- Chair and Department of Surgical Oncology, Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland
| | - Magdalena Bodnar
- Department of Clinical Pathomorphology, Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland
| | - Andrzej Marszałek
- Department of Clinical Pathomorphology, Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland.,Department of Oncologic Pathology, Poznań University of Medical Sciences and Greater Poland Oncology Center, Poznań, Poland
| | | | - Grzegorz Mikułowski
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Warsaw, Poland
| | - Tomasz Kloskowski
- Chair of Urology, Department of Regenerative Medicine, Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland
| | - James Gatherwright
- Department of Plastic Surgery, University Hospitals - Case Medical Center, Cleveland, OH, USA
| | - Tomasz Drewa
- Chair of Urology, Department of Regenerative Medicine, Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland.,Department of Urology and Oncological Urology, Nicolaus Copernicus Hospital, Toruń, Poland
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17
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Hellström M, Bandstein S, Brännström M. Uterine Tissue Engineering and the Future of Uterus Transplantation. Ann Biomed Eng 2016; 45:1718-1730. [PMID: 27995397 PMCID: PMC5489617 DOI: 10.1007/s10439-016-1776-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 12/07/2016] [Indexed: 12/11/2022]
Abstract
The recent successful births following live donor uterus transplantation are proof-of-concept that absolute uterine factor infertility is a treatable condition which affects several hundred thousand infertile women world-wide due to a dysfunctional uterus. This strategy also provides an alternative to gestational surrogate motherhood which is not practiced in most countries due to ethical, religious or legal reasons. The live donor surgery involved in uterus transplantation takes more than 10 h and is then followed by years of immunosuppressive medication to prevent uterine rejection. Immunosuppression is associated with significant adverse side effects, including nephrotoxicity, increased risk of serious infections, and diabetes. Thus, the development of alternative approaches to treat absolute uterine factor infertility would be desirable. This review discusses tissue engineering principles in general, but also details strategies on how to create a bioengineered uterus that could be used for transplantation, without risky donor surgery and any need for immunosuppression. We discuss scaffolds derived from decellularized organs/tissues which may be recellularized using various types of autologous somatic/stem cells, in particular for uterine tissue engineering. It further highlights the hurdles that lay ahead in developing an alternative to an allogeneic source for uterus transplantation.
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Affiliation(s)
- Mats Hellström
- Laboratory for Transplantation and Regenerative Medicine, Department of Obstetrics and Gynecology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden. .,, Kvinnokliniken, Blå stråket 6, 413 45, Göteborg, Sweden.
| | - Sara Bandstein
- Laboratory for Transplantation and Regenerative Medicine, Department of Obstetrics and Gynecology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,, Kvinnokliniken, Blå stråket 6, 413 45, Göteborg, Sweden
| | - Mats Brännström
- Laboratory for Transplantation and Regenerative Medicine, Department of Obstetrics and Gynecology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,, Kvinnokliniken, Blå stråket 6, 413 45, Göteborg, Sweden
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18
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Zhao M, Rotgans B, Wang T, Cummins SF. REGene: a literature-based knowledgebase of animal regeneration that bridge tissue regeneration and cancer. Sci Rep 2016; 6:23167. [PMID: 26975833 PMCID: PMC4791596 DOI: 10.1038/srep23167] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 02/18/2016] [Indexed: 12/13/2022] Open
Abstract
Regeneration is a common phenomenon across multiple animal phyla. Regeneration-related genes (REGs) are critical for fundamental cellular processes such as proliferation and differentiation. Identification of REGs and elucidating their functions may help to further develop effective treatment strategies in regenerative medicine. So far, REGs have been largely identified by small-scale experimental studies and a comprehensive characterization of the diverse biological processes regulated by REGs is lacking. Therefore, there is an ever-growing need to integrate REGs at the genomics, epigenetics, and transcriptome level to provide a reference list of REGs for regeneration and regenerative medicine research. Towards achieving this, we developed the first literature-based database called REGene (REgeneration Gene database). In the current release, REGene contains 948 human (929 protein-coding and 19 non-coding genes) and 8445 homologous genes curated from gene ontology and extensive literature examination. Additionally, the REGene database provides detailed annotations for each REG, including: gene expression, methylation sites, upstream transcription factors, and protein-protein interactions. An analysis of the collected REGs reveals strong links to a variety of cancers in terms of genetic mutation, protein domains, and cellular pathways. We have prepared a web interface to share these regeneration genes, supported by refined browsing and searching functions at http://REGene.bioinfo-minzhao.org/.
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Affiliation(s)
- Min Zhao
- School of Engineering, Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Maroochydore DC, Queensland, 4558, Australia
| | - Bronwyn Rotgans
- School of Engineering, Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Maroochydore DC, Queensland, 4558, Australia
| | - Tianfang Wang
- School of Engineering, Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Maroochydore DC, Queensland, 4558, Australia
| | - S F Cummins
- School of Engineering, Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Maroochydore DC, Queensland, 4558, Australia
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Abstract
Biomaterials have played an increasingly prominent role in the success of biomedical devices and in the development of tissue engineering, which seeks to unlock the regenerative potential innate to human tissues/organs in a state of deterioration and to restore or reestablish normal bodily function. Advances in our understanding of regenerative biomaterials and their roles in new tissue formation can potentially open a new frontier in the fast-growing field of regenerative medicine. Taking inspiration from the role and multi-component construction of native extracellular matrices (ECMs) for cell accommodation, the synthetic biomaterials produced today routinely incorporate biologically active components to define an artificial in vivo milieu with complex and dynamic interactions that foster and regulate stem cells, similar to the events occurring in a natural cellular microenvironment. The range and degree of biomaterial sophistication have also dramatically increased as more knowledge has accumulated through materials science, matrix biology and tissue engineering. However, achieving clinical translation and commercial success requires regenerative biomaterials to be not only efficacious and safe but also cost-effective and convenient for use and production. Utilizing biomaterials of human origin as building blocks for therapeutic purposes has provided a facilitated approach that closely mimics the critical aspects of natural tissue with regard to its physical and chemical properties for the orchestration of wound healing and tissue regeneration. In addition to directly using tissue transfers and transplants for repair, new applications of human-derived biomaterials are now focusing on the use of naturally occurring biomacromolecules, decellularized ECM scaffolds and autologous preparations rich in growth factors/non-expanded stem cells to either target acceleration/magnification of the body's own repair capacity or use nature's paradigms to create new tissues for restoration. In particular, there is increasing interest in separating ECMs into simplified functional domains and/or biopolymeric assemblies so that these components/constituents can be discretely exploited and manipulated for the production of bioscaffolds and new biomimetic biomaterials. Here, following an overview of tissue auto-/allo-transplantation, we discuss the recent trends and advances as well as the challenges and future directions in the evolution and application of human-derived biomaterials for reconstructive surgery and tissue engineering. In particular, we focus on an exploration of the structural, mechanical, biochemical and biological information present in native human tissue for bioengineering applications and to provide inspiration for the design of future biomaterials.
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20
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Affiliation(s)
- Adam W. Feinberg
- Department of Biomedical Engineering and Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213;
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21
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Batalov I, Feinberg AW. Differentiation of Cardiomyocytes from Human Pluripotent Stem Cells Using Monolayer Culture. Biomark Insights 2015; 10:71-6. [PMID: 26052225 PMCID: PMC4447149 DOI: 10.4137/bmi.s20050] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 03/12/2015] [Accepted: 03/13/2015] [Indexed: 02/06/2023] Open
Abstract
Human pluripotent stem cells (PSCs) are a promising cell source for cardiac tissue engineering and cell-based therapies for heart repair because they can be expanded in vitro and differentiated into most cardiovascular cell types, including cardiomyocytes. During embryonic heart development, this differentiation occurs under the influence of internal and external stimuli that guide cells to go down the cardiac lineage. In order to differentiate PSCs in vitro, these or similar stimuli need to be provided in a controlled manner. However, because it is not possible to completely recapitulate the embryonic environment, the factors essential for cardiac differentiation of PSCs in vitro need to be experimentally determined and validated. Since PSCs were first developed, significant progress has been made in optimizing techniques for their differentiation toward cardiomyocytes. In this review, we will summarize recent advances in these techniques, with particular focus on monolayer-based methods that have improved the efficiency and scalability of cardiomyocyte differentiation.
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Affiliation(s)
- Ivan Batalov
- Department of Materials Science & Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Adam W Feinberg
- Department of Materials Science & Engineering, Carnegie Mellon University, Pittsburgh, PA, USA. ; Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
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22
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Lamm V, Hara H, Mammen A, Dhaliwal D, Cooper DK. Corneal blindness and xenotransplantation. Xenotransplantation 2014; 21:99-114. [PMID: 25268248 PMCID: PMC4181387 DOI: 10.1111/xen.12082] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 12/07/2013] [Indexed: 12/13/2022]
Abstract
Approximately 39 million people are blind worldwide, with an estimated 285 million visually impaired. The developing world shoulders 90% of the world's blindness, with 80% of causative diseases being preventable or treatable. Blindness has a major detrimental impact on the patient, community, and healthcare spending. Corneal diseases are significant causes of blindness, affecting at least 4 million people worldwide. The prevalence of corneal disease varies between parts of the world. Trachoma, for instance, is the second leading cause of blindness in Africa, after cataracts, but is rarely found today in developed nations. When preventive strategies have failed, corneal transplantation is the most effective treatment for advanced corneal disease. The major surgical techniques for corneal transplantation include penetrating keratoplasty (PK), anterior lamellar keratoplasty, and endothelial keratoplasty (EK). Indications for corneal transplantation vary between countries, with Fuchs' dystrophy being the leading indication in the USA and keratoconus in Australia. With the exception of the USA, where EK will soon overtake PK as the most common surgical procedure, PK is the overwhelming procedure of choice. Success using corneal grafts in developing nations, such as Nepal, demonstrates the feasibility of corneal transplantation on a global scale. The number of suitable corneas from deceased human donors that becomes available will never be sufficient, and so research into various alternatives, for example stem cells, amniotic membrane transplantation, synthetic and biosynthetic corneas, and xenotransplantation, is progressing. While each of these has potential, we suggest that xenotransplantation holds the greatest potential for a corneal replacement. With the increasing availability of genetically engineered pigs, pig corneas may alleviate the global shortage of corneas in the near future.
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Affiliation(s)
- Vladimir Lamm
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Hidetaka Hara
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Alex Mammen
- Eye and Ear Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Deepinder Dhaliwal
- Eye and Ear Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - David K.C. Cooper
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
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23
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Takiyama N, Mizuno T, Iwai R, Uechi M, Nakayama Y. In-body tissue-engineered collagenous connective tissue membranes (BIOSHEETs) for potential corneal stromal substitution. J Tissue Eng Regen Med 2013; 10:E518-E526. [PMID: 24668614 DOI: 10.1002/term.1859] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 09/07/2013] [Accepted: 11/10/2013] [Indexed: 01/15/2023]
Abstract
There is a severe shortage of donor cornea for transplantation in many countries. Collagenous connective tissue membranes, named BIOSHEETs, grown in vivo were successfully implanted in rabbit corneal stroma for in vivo evaluation of their suitability as a corneal stromal substitute to solve this global donor shortage. BIOSHEETs were prepared by embedding silicone moulds into dorsal subcutaneous pouches in rabbits for 1 month and stored in glycerol. After re-swelling in saline and trephining, disk-shaped BIOSHEETs (4 mm diameter) were allogeneically implanted into stromal pockets prepared in the right cornea of seven rabbits. Clinical tests for corneal thickness and transparency, and tissue analyses were performed. Because the BIOSHEETs (thickness, 131 ± 14 µm) obtained were opaque immediately after implantation, the transparency of the cornea decreased. The total thickness of the BIOSHEET-implanted cornea increased from 364 ± 21.0 µm to 726 ± 131 µm. After 4 weeks' implantation, the thickness of the cornea stabilized (493 ± 80 µm at 4 weeks and 447 ± 46 µm at 8 weeks). The transparency of the cornea increased progressively with time of implantation. The random orientation of collagen fibrils in the original BIOSHEETs tended to be homogeneous, similar to that of the native stroma. No inflammatory cells accumulated and fibroblast-like cells infiltrated the implant. The BIOSHEETs showed high biocompatibility with stromal tissues; however, further studies are needed to test its functional aspects. Although this research is only intended as a proof of concept, BIOSHEETs may be considered a feasible corneal stromal replacement, especially for treating visual impairment caused by stromal haze. Copyright © 2013 John Wiley & Sons, Ltd.
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Affiliation(s)
- Naoaki Takiyama
- Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
| | - Takeshi Mizuno
- Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Kanagawa, Japan.,Division of Medical Engineering and Materials, National Cerebral and Cardiovascular Centre Research Institute, Osaka, Japan
| | - Ryosuke Iwai
- Division of Medical Engineering and Materials, National Cerebral and Cardiovascular Centre Research Institute, Osaka, Japan
| | - Masami Uechi
- Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Kanagawa, Japan.,Division of Medical Engineering and Materials, National Cerebral and Cardiovascular Centre Research Institute, Osaka, Japan
| | - Yasuhide Nakayama
- Division of Medical Engineering and Materials, National Cerebral and Cardiovascular Centre Research Institute, Osaka, Japan.
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24
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Gibbons MC, Foley MA, Cardinal KO. Thinking inside the box: keeping tissue-engineered constructs in vitro for use as preclinical models. TISSUE ENGINEERING PART B-REVIEWS 2012; 19:14-30. [PMID: 22800715 DOI: 10.1089/ten.teb.2012.0305] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Tissue engineers have made great strides toward the creation of living tissue replacements for a wide range of tissue types and applications, with eventual patient implantation as the primary goal. However, an alternate use of tissue-engineered constructs exists: as in vitro preclinical models for purposes such as drug screening and device testing. Tissue-engineered preclinical models have numerous potential advantages over existing models, including cultivation in three-dimensional geometries, decreased cost, increased reproducibility, precise control over cultivation conditions, and the incorporation of human cells. Over the past decade, a number of researchers have developed and used tissue-engineered constructs as preclinical models for testing pharmaceuticals, gene therapies, stents, and other technologies, with examples including blood vessels, skeletal muscle, bone, cartilage, skin, cardiac muscle, liver, cornea, reproductive tissues, adipose, small intestine, neural tissue, and kidney. The focus of this article is to review accomplishments toward the creation and use of tissue-engineered preclinical models of each of these different tissue types.
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Affiliation(s)
- Michael C Gibbons
- Department of Biomedical and General Engineering, Cal Poly San Luis Obispo, San Luis Obispo, California 93407, USA
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