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Hashemi-Afzal F, Fallahi H, Bagheri F, Collins MN, Eslaminejad MB, Seitz H. Advancements in hydrogel design for articular cartilage regeneration: A comprehensive review. Bioact Mater 2025; 43:1-31. [PMID: 39318636 PMCID: PMC11418067 DOI: 10.1016/j.bioactmat.2024.09.005] [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: 06/11/2024] [Revised: 09/03/2024] [Accepted: 09/03/2024] [Indexed: 09/26/2024] Open
Abstract
This review paper explores the cutting-edge advancements in hydrogel design for articular cartilage regeneration (CR). Articular cartilage (AC) defects are a common occurrence worldwide that can lead to joint breakdown at a later stage of the disease, necessitating immediate intervention to prevent progressive degeneration of cartilage. Decades of research into the biomedical applications of hydrogels have revealed their tremendous potential, particularly in soft tissue engineering, including CR. Hydrogels are highly tunable and can be designed to meet the key criteria needed for a template in CR. This paper aims to identify those criteria, including the hydrogel components, mechanical properties, biodegradability, structural design, and integration capability with the adjacent native tissue and delves into the benefits that CR can obtain through appropriate design. Stratified-structural hydrogels that emulate the native cartilage structure, as well as the impact of environmental stimuli on the regeneration outcome, have also been discussed. By examining recent advances and emerging techniques, this paper offers valuable insights into developing effective hydrogel-based therapies for AC repair.
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Affiliation(s)
- Fariba Hashemi-Afzal
- Biotechnology Department, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, 14115-111, Iran
| | - Hooman Fallahi
- Biomedical Engineering Department, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, 14115-111, Iran
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA, 19104 USA
| | - Fatemeh Bagheri
- Biotechnology Department, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, 14115-111, Iran
| | - Maurice N. Collins
- School of Engineering, Bernal Institute and Health Research Institute, University of Limerick, Limerick V94 T9PX, Ireland
| | - Mohamadreza Baghaban Eslaminejad
- Department of Stem Cells and Developmental Biology, Cell Sciences Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, 16635-148, Iran
| | - Hermann Seitz
- Faculty of Mechanical Engineering and Marine Technology, University of Rostock, Justus-von-Liebig-Weg 6, 18059 Rostock, Germany
- Department Life, Light & Matter, University of Rostock, Albert-Einstein-Straße 25, 18059 Rostock, Germany
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2
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Sory DR, Heyraud ACM, Jones JR, Rankin SM. Ionic release from bioactive SiO 2-CaO CME/poly(tetrahydrofuran)/poly(caprolactone) hybrids drives human-bone marrow stromal cell osteogenic differentiation. BIOMATERIALS ADVANCES 2024; 166:214019. [PMID: 39326252 DOI: 10.1016/j.bioadv.2024.214019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 08/05/2024] [Accepted: 08/29/2024] [Indexed: 09/28/2024]
Abstract
This study demonstrates that dissolution products of inorganic/organic SiO2-CaOCME/PTHF/PCL-diCOOH hybrid (70S30CCME-CL) drive human bone marrow stromal cells (h-BMSCs) down an osteogenic pathway with the production of mineralised matrix. We investigated osteogenesis through combined analyses of mRNA dynamics for key markers and targeted staining of mineralised matrix. We demonstrate that h-BMSCs undergo accelerated differentiation in vitro in response to the 70S30CCME-CL ionic milieu, as compared to incubation with osteogenic media. Extracts from 70S30CCME-CL promote osteogenesis by inducing changes in cellular metabolic activity, promoting changes in cell morphology consistent with the osteogenic lineage, and by enhancing mineralisation of hydroxyapatite in the extracellular matrix. Additionally, our results show that 70S30CCME-CL hybrids prove sustained functional resilience by maintaining osteostimulatory effects despite cumulated dissolution cycles. In co-differentiation medium, 70S30CCME-CL ionic release can modulate signalling pathways associated with non-osteogenic functions, further supporting their potential for bone regeneration applications. Overall, our study provides compelling experimental evidence that the 70S30CCME-CL hybrid is a promising biomaterial for bone tissue regeneration applications.
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Affiliation(s)
- David R Sory
- National Heart and Lung Institute, Imperial College London, London, UK.
| | | | - Julian R Jones
- Department of Materials, Imperial College London, London, UK
| | - Sara M Rankin
- National Heart and Lung Institute, Imperial College London, London, UK
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3
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Taephatthanasagon T, Purbantoro SD, Rodprasert W, Pathanachai K, Charoenlertkul P, Mahanonda R, Sa-Ard-Lam N, Kuncorojakti S, Soedarmanto A, Jamilah NS, Osathanon T, Sawangmake C, Rattanapuchpong S. Osteogenic potentials in canine mesenchymal stem cells: unraveling the efficacy of polycaprolactone/hydroxyapatite scaffolds in veterinary bone regeneration. BMC Vet Res 2024; 20:403. [PMID: 39251976 PMCID: PMC11382457 DOI: 10.1186/s12917-024-04246-x] [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: 06/14/2024] [Accepted: 08/26/2024] [Indexed: 09/11/2024] Open
Abstract
BACKGROUND The integration of stem cells, signaling molecules, and biomaterial scaffolds is fundamental for the successful engineering of functional bone tissue. Currently, the development of composite scaffolds has emerged as an attractive approach to meet the criteria of ideal scaffolds utilized in bone tissue engineering (BTE) for facilitating bone regeneration in bone defects. Recently, the incorporation of polycaprolactone (PCL) with hydroxyapatite (HA) has been developed as one of the suitable substitutes for BTE applications owing to their promising osteogenic properties. In this study, a three-dimensional (3D) scaffold composed of PCL integrated with HA (PCL/HA) was prepared and assessed for its ability to support osteogenesis in vitro. Furthermore, this scaffold was evaluated explicitly for its efficacy in promoting the proliferation and osteogenic differentiation of canine bone marrow-derived mesenchymal stem cells (cBM-MSCs) to fill the knowledge gap regarding the use of composite scaffolds for BTE in the veterinary orthopedics field. RESULTS Our findings indicate that the PCL/HA scaffolds substantially supported the proliferation of cBM-MSCs. Notably, the group subjected to osteogenic induction exhibited a markedly upregulated expression of the osteogenic gene osterix (OSX) compared to the control group. Additionally, the construction of 3D scaffold constructs with differentiated cells and an extracellular matrix (ECM) was successfully imaged using scanning electron microscopy. Elemental analysis using a scanning electron microscope coupled with energy-dispersive X-ray spectroscopy confirmed that these constructs possessed the mineral content of bone-like compositions, particularly the presence of calcium and phosphorus. CONCLUSIONS This research highlights the synergistic potential of PCL/HA scaffolds in concert with cBM-MSCs, presenting a multidisciplinary approach to scaffold fabrication that effectively regulates cell proliferation and osteogenic differentiation. Future in vivo studies focusing on the repair and regeneration of bone defects are warranted to further explore the regenerative capacity of these constructs, with the ultimate goal of assessing their potential in veterinary clinical applications.
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Affiliation(s)
- Teeanutree Taephatthanasagon
- Graduate Program in Veterinary Bioscience, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Clinical Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Veterinary Pharmacology and Stem Cell Research Laboratory, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Steven Dwi Purbantoro
- Veterinary Clinical Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Veterinary Pharmacology and Stem Cell Research Laboratory, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Watchareewan Rodprasert
- Veterinary Clinical Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Veterinary Pharmacology and Stem Cell Research Laboratory, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Koranis Pathanachai
- Veterinary Clinical Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Veterinary Pharmacology and Stem Cell Research Laboratory, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Department of Pharmacology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Piyawan Charoenlertkul
- Veterinary Clinical Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Veterinary Pharmacology and Stem Cell Research Laboratory, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Department of Pharmacology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Rangsini Mahanonda
- Immunology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence in Periodontal Disease and Dental Implant, Chulalongkorn University, Bangkok, Thailand
| | - Noppadol Sa-Ard-Lam
- Immunology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence in Periodontal Disease and Dental Implant, Chulalongkorn University, Bangkok, Thailand
| | - Suryo Kuncorojakti
- Division of Veterinary Anatomy, Department of Veterinary Science, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Adretta Soedarmanto
- Veterinary Clinical Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Veterinary Pharmacology and Stem Cell Research Laboratory, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Nabila Syarifah Jamilah
- Veterinary Clinical Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Veterinary Pharmacology and Stem Cell Research Laboratory, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Thanaphum Osathanon
- Center of Excellence for Dental Stem Cell Biology, Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence in Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Chenphop Sawangmake
- Veterinary Clinical Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Veterinary Pharmacology and Stem Cell Research Laboratory, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Department of Pharmacology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence in Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Sirirat Rattanapuchpong
- Veterinary Clinical Stem Cell and Bioengineering Research Unit, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand.
- Veterinary Stem Cell and Bioengineering Innovation Center (VSCBIC), Veterinary Pharmacology and Stem Cell Research Laboratory, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand.
- Academic Affairs, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand.
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Abdelhamid MAA, Khalifa HO, Ki MR, Pack SP. Nanoengineered Silica-Based Biomaterials for Regenerative Medicine. Int J Mol Sci 2024; 25:6125. [PMID: 38892312 PMCID: PMC11172759 DOI: 10.3390/ijms25116125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 05/24/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024] Open
Abstract
The paradigm of regenerative medicine is undergoing a transformative shift with the emergence of nanoengineered silica-based biomaterials. Their unique confluence of biocompatibility, precisely tunable porosity, and the ability to modulate cellular behavior at the molecular level makes them highly desirable for diverse tissue repair and regeneration applications. Advancements in nanoengineered silica synthesis and functionalization techniques have yielded a new generation of versatile biomaterials with tailored functionalities for targeted drug delivery, biomimetic scaffolds, and integration with stem cell therapy. These functionalities hold the potential to optimize therapeutic efficacy, promote enhanced regeneration, and modulate stem cell behavior for improved regenerative outcomes. Furthermore, the unique properties of silica facilitate non-invasive diagnostics and treatment monitoring through advanced biomedical imaging techniques, enabling a more holistic approach to regenerative medicine. This review comprehensively examines the utilization of nanoengineered silica biomaterials for diverse applications in regenerative medicine. By critically appraising the fabrication and design strategies that govern engineered silica biomaterials, this review underscores their groundbreaking potential to bridge the gap between the vision of regenerative medicine and clinical reality.
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Affiliation(s)
- Mohamed A. A. Abdelhamid
- Department of Biotechnology and Bioinformatics, Korea University, Sejong-Ro 2511, Sejong 30019, Republic of Korea;
- Department of Botany and Microbiology, Faculty of Science, Minia University, Minia 61519, Egypt
| | - Hazim O. Khalifa
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, United Arab Emirates University, Al Ain P.O. Box 1555, United Arab Emirates;
- Department of Pharmacology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
| | - Mi-Ran Ki
- Department of Biotechnology and Bioinformatics, Korea University, Sejong-Ro 2511, Sejong 30019, Republic of Korea;
- Institute of Industrial Technology, Korea University, Sejong-Ro 2511, Sejong 30019, Republic of Korea
| | - Seung Pil Pack
- Department of Biotechnology and Bioinformatics, Korea University, Sejong-Ro 2511, Sejong 30019, Republic of Korea;
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Du M, Liu K, Lai H, Qian J, Ai L, Zhang J, Yin J, Jiang D. Functional meniscus reconstruction with biological and biomechanical heterogeneities through topological self-induction of stem cells. Bioact Mater 2024; 36:358-375. [PMID: 38496031 PMCID: PMC10944202 DOI: 10.1016/j.bioactmat.2024.03.005] [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: 07/31/2023] [Revised: 02/14/2024] [Accepted: 03/04/2024] [Indexed: 03/19/2024] Open
Abstract
Meniscus injury is one of the most common sports injuries within the knee joint, which is also a crucial pathogenic factor for osteoarthritis (OA). The current meniscus substitution products are far from able to restore meniscal biofunctions due to the inability to reconstruct the gradient heterogeneity of natural meniscus from biological and biomechanical perspectives. Here, inspired by the topology self-induced effect and native meniscus microstructure, we present an innovative tissue-engineered meniscus (TEM) with a unique gradient-sized diamond-pored microstructure (GSDP-TEM) through dual-stage temperature control 3D-printing system based on the mechanical/biocompatibility compatible high Mw poly(ε-caprolactone) (PCL). Biologically, the unique gradient microtopology allows the seeded mesenchymal stem cells with spatially heterogeneous differentiation, triggering gradient transition of the extracellular matrix (ECM) from the inside out. Biomechanically, GSDP-TEM presents excellent circumferential tensile modulus and load transmission ability similar to the natural meniscus. After implantation in rabbit knee, GSDP-TEM induces the regeneration of biomimetic heterogeneous neomeniscus and efficiently alleviates joint degeneration. This study provides an innovative strategy for functional meniscus reconstruction. Topological self-induced cell differentiation and biomechanical property also provides a simple and effective solution for other complex heterogeneous structure reconstructions in the human body and possesses high clinical translational potential.
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Affiliation(s)
- Mingze Du
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Kangze Liu
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 639798, Singapore
| | - Huinan Lai
- Department of Engineering Mechanics, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Zhejiang University, Zhejiang, 310058, China
| | - Jin Qian
- Department of Engineering Mechanics, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Zhejiang University, Zhejiang, 310058, China
| | - Liya Ai
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Jiying Zhang
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Jun Yin
- The State Key Laboratory of Fluid Power Transmission and Control Systems, Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Zhejiang, 310058, China
| | - Dong Jiang
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
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Ferreira SA, Tallia F, Heyraud A, Walker SA, Salzlechner C, Jones JR, Rankin SM. 3D printed hybrid scaffolds do not induce adverse inflammation in mice and direct human BM-MSC chondrogenesis in vitro. BIOMATERIALS AND BIOSYSTEMS 2024; 13:100087. [PMID: 38312434 PMCID: PMC10835132 DOI: 10.1016/j.bbiosy.2024.100087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/26/2023] [Accepted: 01/08/2024] [Indexed: 02/06/2024] Open
Abstract
Biomaterials that can improve the healing of articular cartilage lesions are needed. To address this unmet need, we developed novel 3D printed silica/poly(tetrahydrofuran)/poly(ε-caprolactone) (SiO2/PTHF/PCL-diCOOH) hybrid scaffolds. Our aim was to carry out essential studies to advance this medical device towards functional validation in pre-clinical trials. First, we show that the chemical composition, microarchitecture and mechanical properties of these scaffolds were not affected by sterilisation with gamma irradiation. To evaluate the systemic and local immunogenic reactivity of the sterilised 3D printed hybrid scaffolds, they were implanted subcutaneously into Balb/c mice. The scaffolds did not trigger a systemic inflammatory response over one week of implantation. The interaction between the host immune system and the implanted scaffold elicited a local physiological reaction with infiltration of mononuclear cells without any signs of a chronic inflammatory response. Then, we investigated how these 3D printed hybrid scaffolds direct chondrogenesis in vitro. Human bone marrow-derived mesenchymal stem/stromal cells (hBM-MSCs) seeded within the 3D printed hybrid scaffolds were cultured under normoxic or hypoxic conditions, with or without chondrogenic supplements. Chondrogenic differentiation assessed by both gene expression and protein production analyses showed that 3D printed hybrid scaffolds support hBM-MSC chondrogenesis. Articular cartilage-specific extracellular matrix deposition within these scaffolds was enhanced under hypoxic conditions (1.7 or 3.7 fold increase in the median of aggrecan production in basal or chondrogenic differentiation media). Our findings show that 3D printed SiO2/PTHF/PCL-diCOOH hybrid scaffolds have the potential to support the regeneration of cartilage tissue.
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Affiliation(s)
| | | | - Agathe Heyraud
- Department of Materials, Imperial College London, London, UK
| | - Simone A. Walker
- National Heart & Lung Institute, Imperial College London, London, UK
| | | | - Julian R. Jones
- Department of Materials, Imperial College London, London, UK
| | - Sara M. Rankin
- National Heart & Lung Institute, Imperial College London, London, UK
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De Mori A, Heyraud A, Tallia F, Blunn G, Jones JR, Roncada T, Cobb J, Al-Jabri T. Ovine Mesenchymal Stem Cell Chondrogenesis on a Novel 3D-Printed Hybrid Scaffold In Vitro. Bioengineering (Basel) 2024; 11:112. [PMID: 38391598 PMCID: PMC10886199 DOI: 10.3390/bioengineering11020112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/08/2024] [Accepted: 01/17/2024] [Indexed: 02/24/2024] Open
Abstract
This study evaluated the use of silica/poly(tetrahydrofuran)/poly(ε-caprolactone) (SiO2/PTHF/PCL-diCOOH) 3D-printed scaffolds, with channel sizes of either 200 (SC-200) or 500 (SC-500) µm, as biomaterials to support the chondrogenesis of sheep bone marrow stem cells (oBMSC), under in vitro conditions. The objective was to validate the potential use of SiO2/PTHF/PCL-diCOOH for prospective in vivo ovine studies. The behaviour of oBMSC, with and without the use of exogenous growth factors, on SiO2/PTHF/PCL-diCOOH scaffolds was investigated by analysing cell attachment, viability, proliferation, morphology, expression of chondrogenic genes (RT-qPCR), deposition of aggrecan, collagen II, and collagen I (immunohistochemistry), and quantification of sulphated glycosaminoglycans (GAGs). The results showed that all the scaffolds supported cell attachment and proliferation with upregulation of chondrogenic markers and the deposition of a cartilage extracellular matrix (collagen II and aggrecan). Notably, SC-200 showed superior performance in terms of cartilage gene expression. These findings demonstrated that SiO2/PTHF/PCL-diCOOH with 200 µm pore size are optimal for promoting chondrogenic differentiation of oBMSC, even without the use of growth factors.
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Affiliation(s)
- Arianna De Mori
- School of Pharmacy and Biomedical Science, University of Portsmouth, St Micheal's Building, White Swan Road, Portsmouth PO1 2DT, UK
| | - Agathe Heyraud
- Department of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
| | - Francesca Tallia
- Department of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
| | - Gordon Blunn
- School of Pharmacy and Biomedical Science, University of Portsmouth, St Micheal's Building, White Swan Road, Portsmouth PO1 2DT, UK
| | - Julian R Jones
- Department of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
| | - Tosca Roncada
- Trinity Center for Biomedical Engineering, Trinity Biomedical Science Institute, Trinity College Dublin, 152-160 Pearse Street, DO2 R590 Dublin, Ireland
| | - Justin Cobb
- Department of Surgery and Cancer, Imperial College London, London SW7 2AZ, UK
| | - Talal Al-Jabri
- Department of Surgery and Cancer, Imperial College London, London SW7 2AZ, UK
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8
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Heyraud A, Tallia F, Sory D, Ting HK, Tchorzewska A, Liu J, Pilsworth HL, Lee PD, Hanna JV, Rankin SM, Jones JR. 3D printed hybrid scaffolds for bone regeneration using calcium methoxyethoxide as a calcium source. Front Bioeng Biotechnol 2023; 11:1224596. [PMID: 37671192 PMCID: PMC10476218 DOI: 10.3389/fbioe.2023.1224596] [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: 05/17/2023] [Accepted: 08/03/2023] [Indexed: 09/07/2023] Open
Abstract
Introduction: Hybrids consist of inorganic and organic co-networks that are indistinguishable above the nanoscale, which can lead to unprecedented combinations of properties, such as high toughness and controlled degradation. Methods: We present 3D printed bioactive hybrid scaffolds for bone regeneration, produced by incorporating calcium into our "Bouncy Bioglass", using calcium methoxyethoxide (CME) as the calcium precursor. SiO2-CaOCME/PTHF/PCL-diCOOH hybrid "inks" for additive manufacturing (Direct Ink Writing) were optimised for synergy of mechanical properties and open interconnected pore channels. Results and Discussion: Adding calcium improved printability. Changing calcium content (5, 10, 20, 30, and 40 mol.%) of the SiO2-CaOCME/PTHF/PCL-diCOOH hybrids affected printability and mechanical properties of the lattice-like scaffolds. Hybrids containing 30 mol.% calcium in the inorganic network (70S30CCME-CL) printed with 500 µm channels and 100 µm strut size achieved the highest strength (0.90 ± 0.23 MPa) and modulus of toughness (0.22 ± 0.04 MPa). These values were higher than Ca-free SiO2/PTHF/PCL-diCOOH hybrids (0.36 ± 0.14 MPa strength and 0.06 ± 0.01 MPa toughness modulus). Over a period of 90 days of immersion in simulated body fluid (SBF), the 70S30CCME-CL hybrids also kept a stable strain to failure (~30 %) and formed hydroxycarbonate apatite within three days. The extracts released by the 70S30CCME-CL hybrids in growth medium did not cause cytotoxic effects on human bone marrow stromal cells over 24 h of culture.
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Affiliation(s)
- Agathe Heyraud
- Department of Materials, Imperial College London, London, United Kingdom
| | - Francesca Tallia
- Department of Materials, Imperial College London, London, United Kingdom
| | - David Sory
- Faculty of Medicine, Imperial College London, National Heart and Lung Institute, London, United Kingdom
| | - Hung-Kai Ting
- Department of Materials, Imperial College London, London, United Kingdom
| | - Anna Tchorzewska
- Department of Materials, Imperial College London, London, United Kingdom
| | - Jingwen Liu
- Department of Mechanical Engineering, Faculty of Engineering Science, University College London, London, United Kingdom
| | | | - Peter D. Lee
- Department of Mechanical Engineering, Faculty of Engineering Science, University College London, London, United Kingdom
| | - John V. Hanna
- Department of Physics, University of Warwick, Coventry, United Kingdom
| | - Sara M. Rankin
- Faculty of Medicine, Imperial College London, National Heart and Lung Institute, London, United Kingdom
| | - Julian R. Jones
- Department of Materials, Imperial College London, London, United Kingdom
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Sun D, Liu W, Tang A, Zhou F. Tuning the Poisson's ratio of poly(ethylene glycol) diacrylate/cellulose nanofibril aerogel scaffold precisely for cultivation of bone marrow mesenchymal stem cell. J Biomed Mater Res A 2023; 111:502-513. [PMID: 36345885 DOI: 10.1002/jbm.a.37468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 10/23/2022] [Accepted: 10/26/2022] [Indexed: 11/11/2022]
Abstract
Tissue engineering (TE) scaffolds with appropriate Poisson's ratio (PR) are suitable for mimicking the environment of native tissues on which cells could survive and thrive better. Herein, cellular structured scaffolds are made by a new composite poly(ethylene glycol) diacrylate/cellulose nanofibril aerogel, with prototypes of the hexagonal, reentrant, and semireentrant models. Scaffolds with different geometry parameters (l, t, α) are designed and simulated by COMSOL to enable precise regulation of their PR. Then, nine groups of scaffolds with different PRs ranging from -0.5 to 0.85 are designed by adjusting geometry parameters and fabricated by using stereolithography and freeze-drying techniques. Subsequently, bone marrow mesenchymal stem cells (BMSc) are cultured on these scaffolds for 21 days, during which CCK8 assay, fluorescence microscope observation, and real-time polymerase chain reaction experiments are performed to characterize the proliferation and differentiation of BMSc. The results reflect that the scaffolds with different PR can provide various stress environments for cells, and the scaffold with zero PR is the most suitable for BMSc differentiating into chondrocytes during early culture experiments. This study suggests that tuning PR precisely is an attractive and effective strategy to provide a cells-suitable environment for scaffold fabrication for TE.
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Affiliation(s)
- Dong Sun
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
| | - Wangyu Liu
- School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, China
| | - Aimin Tang
- State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China
| | - Feng Zhou
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, China
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Chauhan A, Bhatt AD. A review on design of scaffold for osteoinduction: Toward the unification of independent design variables. Biomech Model Mechanobiol 2023; 22:1-21. [PMID: 36121530 DOI: 10.1007/s10237-022-01635-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 09/05/2022] [Indexed: 11/29/2022]
Abstract
Biophysical stimulus quantifies the osteoinductivity of the scaffold concerning the mechanoregulatory mathematical models of scaffold-assisted cellular differentiation. Consider a set of independent structural variables ($) that comprises bulk porosity levels ([Formula: see text]) and a set of morphological features of the micro-structure ([Formula: see text]) associated with scaffolds, i.e., [Formula: see text]. The literature suggests that biophysical stimulus ([Formula: see text]) is a function of independent structural variables ($). Limited understanding of the functional correlation between biophysical stimulus and structural features results in the lack of the desired osteoinductivity in a scaffold. Consequently, it limits their broad applicability to assist bone tissue regeneration for treating critical-sized bone fractures. The literature indicates the existence of multi-dimensional independent design variable space as a probable reason for the general lack of osteoinductivity in scaffolds. For instance, known morphological features are the size, shape, orientation, continuity, and connectivity of the porous regions in the scaffold. It implies that the number of independent variables ([Formula: see text]) is more than two, i.e., [Formula: see text], which interact and influence the magnitude of [Formula: see text] in a unified manner. The efficiency of standard engineering design procedures to analyze the correlation between dependent variable ([Formula: see text]) and independent variables ($) in 3D mutually orthogonal Cartesian coordinate system diminishes proportionally with the increase in the number of independent variables ([Formula: see text]) (Deb in Optimization for engineering design-algorithms and examples, PHI Learning Private Limited, New Delhi, 2012). Therefore, there is an immediate need to devise a framework that has the potential to quantify the micro-structural's morphological features in a unified manner to increase the prospects of scaffold-assisted bone tissue regeneration.
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Affiliation(s)
- Atul Chauhan
- Department of Mechanical Engineering, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, Uttar Pradesh, 211004, India.
| | - Amba D Bhatt
- Department of Mechanical Engineering, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, Uttar Pradesh, 211004, India
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11
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Ghosh S, Sarkar B, Mostafavi E. Nano-based 3D-printed biomaterials for regenerative and translational medicine applications. Nanomedicine (Lond) 2023. [DOI: 10.1016/b978-0-12-818627-5.00010-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023] Open
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12
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Wang H, Zhou X, Wang J, Zhang X, Zhu M, Wang H. Fabrication of channeled scaffolds through polyelectrolyte complex (PEC) printed sacrificial templates for tissue formation. Bioact Mater 2022; 17:261-275. [PMID: 35386455 PMCID: PMC8965085 DOI: 10.1016/j.bioactmat.2022.01.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 01/15/2022] [Accepted: 01/18/2022] [Indexed: 12/19/2022] Open
Abstract
One of the pivotal factors that limit the clinical translation of tissue engineering is the inability to create large volume and complex three-dimensional (3D) tissues, mainly due to the lack of long-range mass transport with many current scaffolds. Here we present a simple yet robust sacrificial strategy to create hierarchical and perfusable microchannel networks within versatile scaffolds via the combination of embedded 3D printing (EB3DP), tunable polyelectrolyte complexes (PEC), and casting methods. The sacrificial templates of PEC filaments (diameter from 120 to 500 μm) with arbitrary 3D configurations were fabricated by EB3DP and then incorporated into various castable matrices (e.g., hydrogels, organic solutions, meltable polymers, etc.). Rapid dissolution of PEC templates within a 2.00 M potassium bromide aqueous solution led to the high fidelity formation of interconnected channels for free mass exchange. The efficacy of such channeled scaffolds for in vitro tissue formation was demonstrated with mouse fibroblasts, showing continuous cell proliferation and ECM deposition. Subcutaneous implantation of channeled silk fibroin (SF) scaffolds with a porosity of 76% could lead to tissue ingrowth as high as 53% in contrast to 5% for those non-channeled controls after 4 weeks. Both histological and immunofluorescence analyses demonstrated that such channeled scaffolds promoted cellularization, vascularization, and host integration along with immunoregulation.
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Affiliation(s)
- Haoyu Wang
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, United States
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, NJ, 07030, United States
| | - Xiaqing Zhou
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, United States
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, NJ, 07030, United States
| | - Juan Wang
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, United States
| | - Xinping Zhang
- School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, NY, 14642, United States
| | - Meifeng Zhu
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, United States
- College of Life Science, Key Laboratory of Bioactive Materials, State Key Laboratory of Medicinal Chemical Biology, Xu Rongxiang Regeneration Life Science Center, Nankai University, 300071, Tianjin, PR China
| | - Hongjun Wang
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, United States
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, NJ, 07030, United States
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13
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Yao X, Yang Y, Zhou Z. Non-Mulberry Silk Fiber-Based Composite Scaffolds Containing Millichannels for Auricular Cartilage Regeneration. ACS OMEGA 2022; 7:15064-15073. [PMID: 35557673 PMCID: PMC9089373 DOI: 10.1021/acsomega.2c00846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 04/07/2022] [Indexed: 06/07/2023]
Abstract
Tissue engineering has made significant progress as a cartilage repair alternative. It is crucial to promote cell proliferation and migration within three-dimensional (3D) bulk scaffolds for tissue regeneration through either chemical gradients or physical channels. In this study, by developing optimized silk fiber-based composite scaffolds, millimeter-scaled channels were created in the corresponding scaffolds via facile physical percussive drilling and subsequently utilized for auricular cartilage regeneration. We found that by the introduction of poly-l-lactic acid porous microspheres (PLLA PMs), the channels incorporated into the Antheraea pernyi (Ap) silk fiber-based scaffolds were reinforced, and the mechanical features were well maintained. Moreover, Ap silk fiber-based scaffolds reinforced by PLLA PMs containing channels (CMAF) exhibited excellent chondrocyte proliferation, migration, and synthesis of cartilage-specific extracellular matrix (ECM) in vitro. The biological evaluation in vivo revealed that CMAF had a higher chondrogenic capability for an even deposition of the specific ECM component. This study suggested that multihierarchical CMAF may have potential application for auricular cartilage regeneration.
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14
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Xie Y, Sutrisno L, Yoshitomi T, Kawazoe N, Yang Y, Chen G. Three-dimensional Culture and Chondrogenic Differentiation of Mesenchymal Stem Cells in Interconnected Collagen Scaffolds. Biomed Mater 2022; 17. [PMID: 35349995 DOI: 10.1088/1748-605x/ac61f9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 03/29/2022] [Indexed: 11/11/2022]
Abstract
Interconnected scaffolds are useful for promoting the chondrogenic differentiation of stem cells. Collagen scaffolds with interconnected pore structures were fabricated with poly(lactic acid-co-glycolic acid) (PLGA) sponge templates. The PLGA-templated collagen scaffolds were used to culture human bone marrow-derived mesenchymal stem cells (hMSCs) to investigate their promotive effect on the chondrogenic differentiation of hMSCs. The cells adhered to the scaffolds with a homogeneous distribution and proliferated with culture time. The expression of chondrogenesis-related genes was upregulated, and abundant cartilaginous matrices were detected. After subcutaneous implantation, the PLGA-templated collagen scaffolds further enhanced the production of cartilaginous matrices and the mechanical properties of the implants. The good interconnectivity of the PLGA-templated collagen scaffolds promoted chondrogenic differentiation. In particular, the collagen scaffolds prepared with large pore-bearing PLGA sponge templates showed the highest promotive effect.
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Affiliation(s)
- Yan Xie
- National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0047, JAPAN
| | - Linawati Sutrisno
- National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0047, JAPAN
| | - Toru Yoshitomi
- National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0047, JAPAN
| | - Naoki Kawazoe
- Biomaterials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Tsukuba, 305-0047, JAPAN
| | - Yingnan Yang
- Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan;, 1-1-1 Tennodai, Tsukuba, 305-8572, JAPAN
| | - Guoping Chen
- University of Tsukuba, 1-1 Namiki, Tsukuba, Ibaraki, 305-8577, JAPAN
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15
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Gan D, Jiang Y, Hu Y, Wang X, Wang Q, Wang K, Xie C, Han L, Lu X. Mussel-inspired extracellular matrix-mimicking hydrogel scaffold with high cell affinity and immunomodulation ability for growth factor-free cartilage regeneration. J Orthop Translat 2022; 33:120-131. [PMID: 35330942 PMCID: PMC8914478 DOI: 10.1016/j.jot.2022.02.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 02/03/2022] [Accepted: 02/14/2022] [Indexed: 01/08/2023] Open
Abstract
Background Injury to articular cartilage cause certain degree of disability due to poor self-repair ability of cartilage tissue. To promote cartilage regeneration, it is essential to develop a scaffold that properly mimics the native cartilage extracellular matrix (ECM) in the aspect of compositions and functions. Methods A mussel-inspired strategy was developed to construct an ECM-mimicking hydrogel scaffold by incorporating polydopamine-modified hyaluronic acid (PDA/HA) complex into a dual-crosslinked collagen (Col) matrix for growth factor-free cartilage regeneration. The adhesion, proliferation, and chondrogenic differentiation of cells on the scaffold were examined. A well-established full-thickness cartilage defect model of the knee in rabbits was used to evaluated the efficacy and functionality of the engineered Col/PDA/HA hydrogel scaffold. Results The PDA/HA complex incorporated-hydrogel scaffold with catechol moieties exhibited better cell affinity than bare negatively-charged HA incorporated hydrogel scaffold. In addition, the PDA/HA complex endowed the scaffold with immunomodulation ability, which suppressed the expression of inflammatory cytokines and effectively activated the polarization of macrophages toward M2 phenotypes. The in vivo results revealed that the mussel-inspired Col/PDA/HA hydrogel scaffold showed strong cartilage inducing ability to promote cartilage regeneration. Conclusions The PDA/HA complex-incorporated hydrogel scaffold overcame the cell repellency of negatively-charged polysaccharide-based scaffolds, which facilitated the adhesion and clustering of cells on the scaffold, and therefore enhanced cell-HA interactions for efficient chondrogenic differentiation. Moreover, the hydrogel scaffold modulated immune microenvironment, and created a regenerative microenvironment to enhance cartilage regeneration. The translational potential of this article This study gives insight into the mussel-inspired approach to construct the tissue-inducing hydrogel scaffold in a growth-factor-free manner, which show great advantage in the clinical treatment. The hydrogel scaffold composed of collagen and hyaluronic acid as the major component, providing cartilage ECM-mimicking environment, is promising for cartilage defect repair.
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Inchingolo F, Hazballa D, Inchingolo AD, Malcangi G, Marinelli G, Mancini A, Maggiore ME, Bordea IR, Scarano A, Farronato M, Tartaglia GM, Lorusso F, Inchingolo AM, Dipalma G. Innovative Concepts and Recent Breakthrough for Engineered Graft and Constructs for Bone Regeneration: A Literature Systematic Review. MATERIALS (BASEL, SWITZERLAND) 2022; 15:1120. [PMID: 35161065 PMCID: PMC8839672 DOI: 10.3390/ma15031120] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/26/2022] [Accepted: 01/27/2022] [Indexed: 02/06/2023]
Abstract
BACKGROUND For decades, regenerative medicine and dentistry have been improved with new therapies and innovative clinical protocols. The aim of the present investigation was to evaluate through a critical review the recent innovations in the field of bone regeneration with a focus on the healing potentials and clinical protocols of bone substitutes combined with engineered constructs, growth factors and photobiomodulation applications. METHODS A Boolean systematic search was conducted by PubMed/Medline, PubMed/Central, Web of Science and Google scholar databases according to the PRISMA guidelines. RESULTS After the initial screening, a total of 304 papers were considered eligible for the qualitative synthesis. The articles included were categorized according to the main topics: alloplastic bone substitutes, autologous teeth derived substitutes, xenografts, platelet-derived concentrates, laser therapy, microbiota and bone metabolism and mesenchymal cells construct. CONCLUSIONS The effectiveness of the present investigation showed that the use of biocompatible and bio-resorbable bone substitutes are related to the high-predictability of the bone regeneration protocols, while the oral microbiota and systemic health of the patient produce a clinical advantage for the long-term success of the regeneration procedures and implant-supported restorations. The use of growth factors is able to reduce the co-morbidity of the regenerative procedure ameliorating the post-operative healing phase. The LLLT is an adjuvant protocol to improve the soft and hard tissues response for bone regeneration treatment protocols.
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Affiliation(s)
- Francesco Inchingolo
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (D.H.); (A.D.I.); (G.M.); (G.M.); (A.M.); (M.E.M.); (A.M.I.)
| | - Denisa Hazballa
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (D.H.); (A.D.I.); (G.M.); (G.M.); (A.M.); (M.E.M.); (A.M.I.)
- Kongresi Elbasanit, Rruga: Aqif Pasha, 3001 Elbasan, Albania
| | - Alessio Danilo Inchingolo
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (D.H.); (A.D.I.); (G.M.); (G.M.); (A.M.); (M.E.M.); (A.M.I.)
| | - Giuseppina Malcangi
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (D.H.); (A.D.I.); (G.M.); (G.M.); (A.M.); (M.E.M.); (A.M.I.)
| | - Grazia Marinelli
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (D.H.); (A.D.I.); (G.M.); (G.M.); (A.M.); (M.E.M.); (A.M.I.)
| | - Antonio Mancini
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (D.H.); (A.D.I.); (G.M.); (G.M.); (A.M.); (M.E.M.); (A.M.I.)
| | - Maria Elena Maggiore
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (D.H.); (A.D.I.); (G.M.); (G.M.); (A.M.); (M.E.M.); (A.M.I.)
| | - Ioana Roxana Bordea
- Department of Oral Rehabilitation, Faculty of Dentistry, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania;
| | - Antonio Scarano
- Department of Innovative Technologies in Medicine and Dentistry, University of Chieti-Pescara, 66100 Chieti, Italy;
| | - Marco Farronato
- UOC Maxillo-Facial Surgery and Dentistry, Department of Biomedical, Surgical and Dental Sciences, School of Dentistry, Fondazione IRCCS Ca Granda, Ospedale Maggiore Policlinico, University of Milan, 20100 Milan, Italy; (M.F.); (G.M.T.)
| | - Gianluca Martino Tartaglia
- UOC Maxillo-Facial Surgery and Dentistry, Department of Biomedical, Surgical and Dental Sciences, School of Dentistry, Fondazione IRCCS Ca Granda, Ospedale Maggiore Policlinico, University of Milan, 20100 Milan, Italy; (M.F.); (G.M.T.)
| | - Felice Lorusso
- Department of Innovative Technologies in Medicine and Dentistry, University of Chieti-Pescara, 66100 Chieti, Italy;
| | - Angelo Michele Inchingolo
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (D.H.); (A.D.I.); (G.M.); (G.M.); (A.M.); (M.E.M.); (A.M.I.)
| | - Gianna Dipalma
- Department of Interdisciplinary Medicine, University of Medicine Aldo Moro, 70124 Bari, Italy; (D.H.); (A.D.I.); (G.M.); (G.M.); (A.M.); (M.E.M.); (A.M.I.)
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Long RM, Jiang Y, Guo JQ, Ren G, Guo XX, Xie X, Wu Y, Yan RD, Lin ZZ, Wang SB, Liu YG. Synthesis of Silica-Based Solid-Acid Catalyst Material as a Potential Osteochondral Repair Model In Vitro. Front Bioeng Biotechnol 2021. [DOI: 10.3389/fbioe.2021.790139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
For osteochondral damage, the pH value change of the damaged site will influence the repair efficacy of the patient. For better understanding the mechanism of the acid-base effect, the construction of in vitro model is undoubtedly a simple and interesting work to evaluate the influence. Here, a novel porous silica-based solid-acid catalyst material was prepared by additive manufacturing technology, exhibiting improved eliminating effects of the residue. SEM, FTIR, and TGA were used to characterize the morphology, structure, and thermal stability of the synthesized 3D material. The reaction between 4-methoxybenzyl alcohol and 3, 4-dihydro-2H-pyran was used as a template reaction to evaluate the eliminating performance of the 3D porous material. Solvents were optimized, and three reaction groups in the presence of 3D SiO2, 3D SiO2-SO3H, and 3D SiO2-NH-SO3H, as well as one without catalyst, were compared. In addition, in consideration of the complicated situation of the physiological environment in vivo, universality of the synthesized 3D SiO2-NH-SO3H catalyst material was studied with different alcohols. The results showed that the sulfonic acid-grafted 3D material had excellent catalytic performance, achieving a yield over 95% in only 20 min. Besides, the catalyst material can be recycled at least 10 times, with yields still higher than 90%. Such a solid catalyst material is expected to have great potential in additive manufacturing because the catalyst material is easy-recyclable, renewable and biocompatible. The 3D material with connective channels may also be utilized as an in vitro model for environment evaluation of osteochondral repair in the future.
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18
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Deng X, Chen X, Geng F, Tang X, Li Z, Zhang J, Wang Y, Wang F, Zheng N, Wang P, Yu X, Hou S, Zhang W. Precision 3D printed meniscus scaffolds to facilitate hMSCs proliferation and chondrogenic differentiation for tissue regeneration. J Nanobiotechnology 2021; 19:400. [PMID: 34856996 PMCID: PMC8641190 DOI: 10.1186/s12951-021-01141-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 11/16/2021] [Indexed: 11/23/2022] Open
Abstract
Background The poor regenerative capability and structural complexity make the reconstruction of meniscus particularly challenging in clinic. 3D printing of polymer scaffolds holds the promise of precisely constructing complex tissue architecture, however the resultant scaffolds usually lack of sufficient bioactivity to effectively generate new tissue. Results Herein, 3D printing-based strategy via the cryo-printing technology was employed to fabricate customized polyurethane (PU) porous scaffolds that mimic native meniscus. In order to enhance scaffold bioactivity for human mesenchymal stem cells (hMSCs) culture, scaffold surface modification through the physical absorption of collagen I and fibronectin (FN) were investigated by cell live/dead staining and cell viability assays. The results indicated that coating with fibronectin outperformed coating with collagen I in promoting multiple-aspect stem cell functions, and fibronectin favors long-term culture required for chondrogenesis on scaffolds. In situ chondrogenic differentiation of hMSCs resulted in a time-dependent upregulation of SOX9 and extracellular matrix (ECM) assessed by qRT-PCR analysis, and enhanced deposition of collagen II and aggrecan confirmed by immunostaining and western blot analysis. Gene expression data also revealed 3D porous scaffolds coupled with surface functionalization greatly facilitated chondrogenesis of hMSCs. In addition, the subcutaneous implantation of 3D porous PU scaffolds on SD rats did not induce local inflammation and integrated well with surrounding tissues, suggesting good in vivo biocompatibility. Conclusions Overall, this study presents an approach to fabricate biocompatible meniscus constructs that not only recapitulate the architecture and mechanical property of native meniscus, but also have desired bioactivity for hMSCs culture and cartilage regeneration. The generated 3D meniscus-mimicking scaffolds incorporated with hMSCs offer great promise in tissue engineering strategies for meniscus regeneration. Graphical Abstract ![]()
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Affiliation(s)
- Xingyu Deng
- School of Pharmacy, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
| | - Xiabin Chen
- School of Pharmacy, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
| | - Fang Geng
- Medtronic Technology Center, Shanghai, 201114, China
| | - Xin Tang
- Medtronic Technology Center, Shanghai, 201114, China
| | - Zhenzhen Li
- School of Pharmacy, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
| | - Jie Zhang
- School of Pharmacy, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
| | - Yikai Wang
- Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Hangzhou, Zhejiang Province, China
| | - Fangqian Wang
- Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Hangzhou, Zhejiang Province, China
| | - Na Zheng
- State Key Laboratory of Chemical Engineering, School of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Peng Wang
- The State Key Laboratory of Translational Medicine and Innovative Drug Development, Nanjing, 210042, China
| | - Xiaohua Yu
- Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China. .,Zhejiang Provincial Key Laboratory of Orthopaedics, Hangzhou, Zhejiang Province, China. .,Orthopedics Research Institute of Zhejiang University, Hangzhou, 310009, Zhejiang Province, China.
| | - Shurong Hou
- School of Pharmacy, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China.
| | - Wei Zhang
- Medtronic Technology Center, Shanghai, 201114, China.
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Kondarage AI, Gayani B, Poologasundarampillai G, Nommeots-Nomm A, Lee PD, Lalitharatne TD, Nanayakkara ND, Jones JR, Karunaratne A. Detection and Tracking Volumes of Interest in 3D Printed Tissue Engineering Scaffolds using 4D Imaging Modalities. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2021; 2021:1230-1233. [PMID: 34891509 DOI: 10.1109/embc46164.2021.9630587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Additive manufacturing (AM) platforms allow the production of patient tissue engineering scaffolds with desirable architectures. Although AM platforms offer exceptional control on architecture, post-processing methods such as sintering and freeze-drying often deform the printed scaffold structure. In-situ 4D imaging can be used to analyze changes that occur during post-processing. Visualization and analysis of changes in selected volumes of interests (VOIs) over time are essential to understand the underlining mechanisms of scaffold deformations. Yet, automated detection and tracking of VOIs in the 3D printed scaffold over time using 4D image data is currently an unsolved image processing task. This paper proposes a new image processing technique to segment, detect and track volumes of interest in 3D printed tissue engineering scaffolds. The method is validated using a 4D synchrotron sourced microCT image data captured during the sintering of bioactive glass scaffolds in-situ. The proposed method will contribute to the development of scaffolds with controllable designs and optimum properties for the development of patient-specific scaffolds.
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20
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Han Y, Lian M, Wu Q, Qiao Z, Sun B, Dai K. Effect of Pore Size on Cell Behavior Using Melt Electrowritten Scaffolds. Front Bioeng Biotechnol 2021; 9:629270. [PMID: 34277578 PMCID: PMC8283809 DOI: 10.3389/fbioe.2021.629270] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Accepted: 05/18/2021] [Indexed: 01/01/2023] Open
Abstract
Tissue engineering technology has made major advances with respect to the repair of injured tissues, for which scaffolds and cells are key factors. However, there are still some issues with respect to the relationship between scaffold and cell growth parameters, especially that between the pore size and cells. In this study, we prepared scaffolds with different pore sizes by melt electrowritten (MEW) and used bone marrow mensenchymal stem cells (BMSCs), chondrocytes (CCs), and tendon stem cells (TCs) to study the effect of the scaffold pore size on cell adhesion, proliferation, and differentiation. It was evident that different cells demonstrated different adhesion and proliferation rates on the scaffold. Furthermore, different cell types showed differential preferences for scaffold pore sizes, as evidenced by variations in cell viability. The pore size also affected the differentiation and gene expression pattern of cells. Among the tested cells, BMSCs exhibited the greatest viability on the 200-μm-pore-size scaffold, CCs on the 200- and 100-μm scaffold, and TCs on the 300-μm scaffold. The scaffolds with 100- and 200-μm pore sizes induced a significantly higher proliferation, chondrogenic gene expression, and cartilage-like matrix deposition after in vitro culture relative to the scaffolds with smaller or large pore sizes (especially 50 and 400 μm). Taken together, these results show that the architecture of 10 layers of MEW scaffolds for different tissues should be different and that the pore size is critical for the development of advanced tissue engineering strategies for tissue repair.
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Affiliation(s)
- Yu Han
- Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Meifei Lian
- Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Qiang Wu
- Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhiguang Qiao
- Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Binbin Sun
- Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kerong Dai
- Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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21
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Ren L, Cong N, Han H, Zhang Z, Deng C, Zhang N, Li D. The effect of sodium metasilicate on the three-dimensional chondrogenesis of mesenchymal stem cells. Dent Mater J 2021; 40:853-862. [PMID: 34193723 DOI: 10.4012/dmj.2020-214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The benefits of different silicic concentrations on chondrogenesis of mesenchymal stem cell (MSC) are unclear. Here an in vitro scaffoldless model was used to determine the impact of different silicic concentrations on the three-dimensional chondrogenesis of MSCs. Sodium metasilicate solutions were used as the source of silica, and were added in the chondrogenic medium and replenished every 3 days. The thickness and area of cartilage; the expression of collagen II, aggrecan, and the collagen type II/I ratio; the glycosaminoglycan and cell contents; and the tangent modulus of the constructs were all significantly higher in 100 and 200 ng/mL groups compared with those in 0 and 10 ng/mL groups. All the above parameters, as well as several mechanical parameters of cartilage constructs were highest in 200 ng/mL group. Thus, 200 ng/mL sodium metasilicate could promote the chondrogenic differentiation of MSCs and the mechanical and biochemical properties of the cartilage constructs.
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Affiliation(s)
- Le Ren
- Department of Oral, The First Affiliated Hospital of Xi'an Jiaotong University
| | - Nuonuo Cong
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University
| | - Hao Han
- Medical Emergency Center, Xi'an Xiangyang International Airport
| | - Zhe Zhang
- Department of Oral, The First Affiliated Hospital of Xi'an Jiaotong University
| | - Chunni Deng
- Department of Oral, The First Affiliated Hospital of Xi'an Jiaotong University
| | - Nan Zhang
- Department of Oral, The First Affiliated Hospital of Xi'an Jiaotong University
| | - Daxu Li
- Department of Oral, The First Affiliated Hospital of Xi'an Jiaotong University
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22
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Wang X, Li Z, Wang C, Bai H, Wang Z, Liu Y, Bao Y, Ren M, Liu H, Wang J. Enlightenment of Growth Plate Regeneration Based on Cartilage Repair Theory: A Review. Front Bioeng Biotechnol 2021; 9:654087. [PMID: 34150725 PMCID: PMC8209549 DOI: 10.3389/fbioe.2021.654087] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 05/10/2021] [Indexed: 01/21/2023] Open
Abstract
The growth plate (GP) is a cartilaginous region situated between the epiphysis and metaphysis at the end of the immature long bone, which is susceptible to mechanical damage because of its vulnerable structure. Due to the limited regeneration ability of the GP, current clinical treatment strategies (e.g., bone bridge resection and fat engraftment) always result in bone bridge formation, which will cause length discrepancy and angular deformity, thus making satisfactory outcomes difficult to achieve. The introduction of cartilage repair theory and cartilage tissue engineering technology may encourage novel therapeutic approaches for GP repair using tissue engineered GPs, including biocompatible scaffolds incorporated with appropriate seed cells and growth factors. In this review, we summarize the physiological structure of GPs, the pathological process, and repair phases of GP injuries, placing greater emphasis on advanced tissue engineering strategies for GP repair. Furthermore, we also propose that three-dimensional printing technology will play a significant role in this field in the future given its advantage of bionic replication of complex structures. We predict that tissue engineering strategies will offer a significant alternative to the management of GP injuries.
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Affiliation(s)
- Xianggang Wang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.,Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Zuhao Li
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.,Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Chenyu Wang
- Department of Plastic and Reconstructive Surgery, The First Hospital of Jilin University, Changchun, China
| | - Haotian Bai
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.,Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Zhonghan Wang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.,Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Yuzhe Liu
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.,Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Yirui Bao
- Department of Orthopedics, Chinese PLA 965 Hospital, Jilin, China
| | - Ming Ren
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.,Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - He Liu
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.,Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Jincheng Wang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.,Orthopaedic Research Institute of Jilin Province, Changchun, China
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23
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Chung JJ, Yoo J, Sum BST, Li S, Lee S, Kim TH, Li Z, Stevens MM, Georgiou TK, Jung Y, Jones JR. 3D Printed Porous Methacrylate/Silica Hybrid Scaffold for Bone Substitution. Adv Healthc Mater 2021; 10:e2100117. [PMID: 33951318 PMCID: PMC7615494 DOI: 10.1002/adhm.202100117] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/11/2021] [Indexed: 01/01/2023]
Abstract
Inorganic-organic hybrid biomaterials made with star polymer poly(methyl methacrylate-co-3-(trimethoxysilyl)propyl methacrylate) and silica, which show promising mechanical properties, are 3D printed as bone substitutes for the first time, by direct ink writing of the sol. Three different inorganic:organic ratios of poly(methyl methacrylate-co-3-(trimethoxysilyl)propyl methacrylate)-star-SiO2 hybrid inks are printed with pore channels in the range of 100-200 µm. Mechanical properties of the 3D printed scaffolds fall within the range of trabecular bone, and MC3T3 pre-osteoblast cells are able to adhere to the scaffolds in vitro, regardless of their compositions. Osteogenic and angiogenic properties of the hybrid scaffolds are shown using a rat calvarial defect model. Hybrid scaffolds with 40:60 inorganic:organic composition are able to instigate new vascularized bone formation within its pore channels and polarize macrophages toward M2 phenotype. 3D printing inorganic-organic hybrids with sophisticated polymer structure opens up possibilities to produce novel bone graft materials.
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Affiliation(s)
- Justin J. Chung
- Department of MaterialsImperial College LondonLondonSW7 2AZUnited Kingdom
- Center for Biomaterials, Biomedical Research InstituteKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
| | - Jin Yoo
- Center for Biomaterials, Biomedical Research InstituteKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
| | - Brian S. T. Sum
- Department of MaterialsImperial College LondonLondonSW7 2AZUnited Kingdom
| | - Siwei Li
- Department of MaterialsImperial College LondonLondonSW7 2AZUnited Kingdom
| | - Soojin Lee
- Center for Biomaterials, Biomedical Research InstituteKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
| | - Tae Hee Kim
- Center for Biomaterials, Biomedical Research InstituteKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
| | - Zhenlun Li
- Department of MaterialsImperial College LondonLondonSW7 2AZUnited Kingdom
| | - Molly M. Stevens
- Department of MaterialsImperial College LondonLondonSW7 2AZUnited Kingdom
- Institute of Biomedical EngineeringImperial College LondonLondonSW7 2AZUnited Kingdom
- Department of BioengineeringImperial College LondonLondonSW7 2AZUnited Kingdom
| | - Theoni K. Georgiou
- Department of MaterialsImperial College LondonLondonSW7 2AZUnited Kingdom
| | - Youngmee Jung
- Center for Biomaterials, Biomedical Research InstituteKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
- School of Electrical and Electronic EngineeringYonsei UniversitySeoul03722Republic of Korea
- YU‐KIST InstituteYonsei UniversitySeoul03722Republic of Korea
| | - Julian R. Jones
- Department of MaterialsImperial College LondonLondonSW7 2AZUnited Kingdom
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24
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Wei F, Liu S, Chen M, Tian G, Zha K, Yang Z, Jiang S, Li M, Sui X, Chen Z, Guo Q. Host Response to Biomaterials for Cartilage Tissue Engineering: Key to Remodeling. Front Bioeng Biotechnol 2021; 9:664592. [PMID: 34017827 PMCID: PMC8129172 DOI: 10.3389/fbioe.2021.664592] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 04/14/2021] [Indexed: 12/18/2022] Open
Abstract
Biomaterials play a core role in cartilage repair and regeneration. The success or failure of an implanted biomaterial is largely dependent on host response following implantation. Host response has been considered to be influenced by numerous factors, such as immune components of materials, cytokines and inflammatory agents induced by implants. Both synthetic and native materials involve immune components, which are also termed as immunogenicity. Generally, the innate and adaptive immune system will be activated and various cytokines and inflammatory agents will be consequently released after biomaterials implantation, and further triggers host response to biomaterials. This will guide the constructive remolding process of damaged tissue. Therefore, biomaterial immunogenicity should be given more attention. Further understanding the specific biological mechanisms of host response to biomaterials and the effects of the host-biomaterial interaction may be beneficial to promote cartilage repair and regeneration. In this review, we summarized the characteristics of the host response to implants and the immunomodulatory properties of varied biomaterial. We hope this review will provide scientists with inspiration in cartilage regeneration by controlling immune components of biomaterials and modulating the immune system.
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Affiliation(s)
- Fu Wei
- Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries, PLA, Institute of Orthopedics, Chinese PLA General Hospital, Beijing, China.,Department of Orthopedics, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Shuyun Liu
- Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries, PLA, Institute of Orthopedics, Chinese PLA General Hospital, Beijing, China
| | - Mingxue Chen
- Department of Orthopedic Surgery, Beijing Jishuitan Hospital, Fourth Clinical College of Peking University, Beijing, China
| | - Guangzhao Tian
- Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries, PLA, Institute of Orthopedics, Chinese PLA General Hospital, Beijing, China.,School of Medicine, Nankai University, Tianjin, China
| | - Kangkang Zha
- Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries, PLA, Institute of Orthopedics, Chinese PLA General Hospital, Beijing, China.,School of Medicine, Nankai University, Tianjin, China
| | - Zhen Yang
- Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries, PLA, Institute of Orthopedics, Chinese PLA General Hospital, Beijing, China.,School of Medicine, Nankai University, Tianjin, China
| | | | - Muzhe Li
- Department of Orthopedics, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Xiang Sui
- Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries, PLA, Institute of Orthopedics, Chinese PLA General Hospital, Beijing, China
| | - Zhiwei Chen
- Department of Orthopedics, The First Affiliated Hospital of University of South China, Hengyang, China
| | - Quanyi Guo
- Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma and War Injuries, PLA, Institute of Orthopedics, Chinese PLA General Hospital, Beijing, China
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25
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Iaquinta MR, Lanzillotti C, Mazziotta C, Bononi I, Frontini F, Mazzoni E, Oton-Gonzalez L, Rotondo JC, Torreggiani E, Tognon M, Martini F. The role of microRNAs in the osteogenic and chondrogenic differentiation of mesenchymal stem cells and bone pathologies. Theranostics 2021; 11:6573-6591. [PMID: 33995677 PMCID: PMC8120225 DOI: 10.7150/thno.55664] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 03/15/2021] [Indexed: 02/07/2023] Open
Abstract
Mesenchymal stem cells (MSCs) have been identified in many adult tissues. MSCs can regenerate through cell division or differentiate into adipocytes, osteoblasts and chondrocytes. As a result, MSCs have become an important source of cells in tissue engineering and regenerative medicine for bone tissue and cartilage. Several epigenetic factors are believed to play a role in MSCs differentiation. Among these, microRNA (miRNA) regulation is involved in the fine modulation of gene expression during osteogenic/chondrogenic differentiation. It has been reported that miRNAs are involved in bone homeostasis by modulating osteoblast gene expression. In addition, countless evidence has demonstrated that miRNAs dysregulation is involved in the development of osteoporosis and bone fractures. The deregulation of miRNAs expression has also been associated with several malignancies including bone cancer. In this context, bone-associated circulating miRNAs may be useful biomarkers for determining the predisposition, onset and development of osteoporosis, as well as in clinical applications to improve the diagnosis, follow-up and treatment of cancer and metastases. Overall, this review will provide an overview of how miRNAs activities participate in osteogenic/chondrogenic differentiation, while addressing the role of miRNA regulatory effects on target genes. Finally, the role of miRNAs in pathologies and therapies will be presented.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Fernanda Martini
- Department of Medical Sciences, Section of Experimental Medicine, School of Medicine, University of Ferrara. Ferrara, Italy
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26
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Andjelkov N, Riyadh H, Ivarsson M, Kacarevic-Popovic Z, Krstic J, Wretenberg P. The enhancement of cartilage regeneration by use of a chitosan-based scaffold in a 3D model of microfracture in vitro: a pilot evaluation. J Exp Orthop 2021; 8:12. [PMID: 33599885 PMCID: PMC7892646 DOI: 10.1186/s40634-021-00328-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 01/18/2021] [Indexed: 01/15/2023] Open
Affiliation(s)
- N Andjelkov
- Department of Orthopedics, Västmanlands Regional Hospital, Västerås, Sweden. .,Centre for Clinical Research, Uppsala University, Västmanlands Regional Hospital, Västerås, Sweden. .,Department of Orthopaedics, School of Medical Sciences, Örebro University, Örebro, Sweden.
| | - H Riyadh
- Department of Orthopedics, Västmanlands Regional Hospital, Västerås, Sweden
| | - M Ivarsson
- Department of Health Sciences, University of Örebro, Örebro, Sweden
| | - Z Kacarevic-Popovic
- Department of Radiation Chemistry and Physics, Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
| | - J Krstic
- Department of Radiation Chemistry and Physics, Vinca Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
| | - P Wretenberg
- Department of Orthopaedics, School of Medical Sciences, Örebro University, Örebro, Sweden
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27
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Nelson M, Li S, Page SJ, Shi X, Lee PD, Stevens MM, Hanna JV, Jones JR. 3D printed silica-gelatin hybrid scaffolds of specific channel sizes promote collagen Type II, Sox9 and Aggrecan production from chondrocytes. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 123:111964. [PMID: 33812592 DOI: 10.1016/j.msec.2021.111964] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 02/02/2021] [Accepted: 02/08/2021] [Indexed: 11/26/2022]
Abstract
Inorganic/organic hybrids have co-networks of inorganic and organic components, with the aim of obtaining synergy of the properties of those components. Here, a silica-gelatin sol-gel hybrid "ink" was directly 3D printed to produce 3D grid-like scaffolds, using a coupling agent, 3-glycidyloxypropyl)trimethoxysilane (GPTMS), to form covalent bonds between the silicate and gelatin co-networks. Scaffolds were printed with 1 mm strut separation, but the drying method affected the final architecture and properties. Freeze drying produced <40 μm struts and large ~700 μm channels. Critical point drying enabled strut consolidation, with ~160 μm struts and ~200 μm channels, which improved mechanical properties. This architecture was critical to cellular response: when chondrocytes were seeded on the scaffolds with 200 μm wide pore channels in vitro, collagen Type II matrix was preferentially produced (negligible amount of Type I or X were observed), indicative of hyaline-like cartilaginous matrix formation, but when pore channels were 700 μm wide, Type I collagen was prevalent. This was supported by Sox9 and Aggrecan expression. The scaffolds have potential for regeneration of articular cartilage regeneration, particularly in sports medicine cases.
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Affiliation(s)
- Maria Nelson
- Department of Materials, Imperial College London, London SW7 2AZ, UK
| | - Siwei Li
- Department of Materials, Imperial College London, London SW7 2AZ, UK
| | - Samuel J Page
- Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Xiaomeng Shi
- Department of Materials, Imperial College London, London SW7 2AZ, UK
| | - Peter D Lee
- Department of Mechanical Engineering, University College London, WC1E 7JE, UK
| | - Molly M Stevens
- Department of Materials, Imperial College London, London SW7 2AZ, UK; Institute of Biomedical Engineering, Imperial College London, London SW7 2AZ, UK; Department of Bioengineering, Imperial College London, London SW7 2AZ, UK
| | - John V Hanna
- Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
| | - Julian R Jones
- Department of Materials, Imperial College London, London SW7 2AZ, UK.
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28
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Duan WP, Huang LA, Dong ZQ, Li HQ, Guo L, Song WJ, Yang YF, Li PC, Wei XC. Studies of Articular Cartilage Repair from 2009 to 2018: A Bibliometric Analysis of Articles. Orthop Surg 2021; 13:608-615. [PMID: 33554478 PMCID: PMC7957388 DOI: 10.1111/os.12888] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 11/08/2020] [Accepted: 11/16/2020] [Indexed: 01/20/2023] Open
Abstract
Objective To perform a bibliometric analysis of research on articular cartilage repair published in Chinese and English over the past decade. Fundamental and clinical research topics of high interest were further comparatively analyzed. Methods Relevant studies published from 1 January 2009 to 31 December 2018 (10 years) were retrieved from the Wanfang database (Chinese articles) and six databases, including MEDLINE, WOS, INSPEC, SCIELO, KJD, and RSCI on the website “Web of Science” (English articles), using key words: “articular cartilage” AND “injury” AND “repair”. The articles were categorized according to research focuses for a comparative analysis between those published in Chinese vs English, and further grouped according to publication date (before and after 2014). A comparative analysis was performed on research focus to characterize the variation in research trends between two 5‐year time spans. Moreover, articles were classified as basic and clinical research studies. Results Overall, 5762 articles were retrieved, including 2748 in domestic Chinese journals and 3014 in international English journals. A total of 4937 articles focused on the top 10 research topics, with the top 3 being stem cells (32.1%), tissue‐engineered scaffold (22.8%), and molecular mechanisms (16.4%). Differences between the numbers of Chinese and English papers were observed for 3 topics: chondrocyte implantation (104 vs 316), osteochondral allograft (27 vs 86), and microfracture (127 vs 293). The following topics gained more research interest in the second 5‐year time span compared with the first: microfracture, osteochondral allograft, osteochondral autograft, stem cells, and tissue‐engineered scaffold. Articles with a focus on three‐dimensional‐printing technology have shown the fastest increase in publication numbers. Among 5613 research articles, basic research studies accounted for the majority (4429), with clinical studies described in only 1184 articles. The top 7 research topics of clinical studies were: chondrocyte implantation (28.7%), stem cells (21.9%), microfracture (19.2%), tissue scaffold (10.6%), osteochondral autograft (10.5%), osteochondral allograft (6.3%), and periosteal transplantation (2.8%). Conclusion Studies focused on stem cells and tissue‐engineered scaffolds led the field of damaged articular cartilage repair. International researchers studied allograft‐related implantation approaches more often than Chinese researchers. Traditional surgical techniques, such as microfracture and osteochondral transplantation, gained high research interest over the past decade.
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Affiliation(s)
- Wang-Ping Duan
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, China.,Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, China
| | - Ling-An Huang
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, China.,Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, China
| | - Zheng-Quan Dong
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, China.,Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, China
| | - Hao-Qian Li
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, China.,Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, China
| | - Li Guo
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, China.,Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, China
| | - Wen-Jie Song
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, China.,Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, China
| | - Yan-Fei Yang
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, China.,Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, China
| | - Peng-Cui Li
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, China.,Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, China
| | - Xiao-Chun Wei
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, China.,Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, China
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29
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Zhang L, Fu L, Zhang X, Chen L, Cai Q, Yang X. Hierarchical and heterogeneous hydrogel system as a promising strategy for diversified interfacial tissue regeneration. Biomater Sci 2021; 9:1547-1573. [DOI: 10.1039/d0bm01595d] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A state-of-the-art review on the design and preparation of hierarchical and heterogeneous hydrogel systems for interfacial tissue regeneration.
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Affiliation(s)
- Liwen Zhang
- State Key Laboratory of Organic–Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology
- Beijing 100029
- P.R. China
| | - Lei Fu
- State Key Laboratory of Organic–Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology
- Beijing 100029
- P.R. China
| | - Xin Zhang
- Institute of Sports Medicine
- Beijing Key Laboratory of Sports Injuries
- Peking University Third Hospital
- Beijing 100191
- P. R. China
| | - Linxin Chen
- Peking University Third Hospital
- Beijing 100191
- P. R. China
| | - Qing Cai
- State Key Laboratory of Organic–Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology
- Beijing 100029
- P.R. China
| | - Xiaoping Yang
- State Key Laboratory of Organic–Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology
- Beijing 100029
- P.R. China
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30
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Chung JJ, Im H, Kim SH, Park JW, Jung Y. Toward Biomimetic Scaffolds for Tissue Engineering: 3D Printing Techniques in Regenerative Medicine. Front Bioeng Biotechnol 2020; 8:586406. [PMID: 33251199 PMCID: PMC7671964 DOI: 10.3389/fbioe.2020.586406] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 10/05/2020] [Indexed: 12/21/2022] Open
Abstract
Three-dimensional (3D) printing technology allows fabricating complex and precise structures by stacking materials layer by layer. The fabrication method has a strong potential in the regenerative medicine field to produce customizable and defect-fillable scaffolds for tissue regeneration. Plus, biocompatible materials, bioactive molecules, and cells can be printed together or separately to enhance scaffolds, which can save patients who suffer from shortage of transplantable organs. There are various 3D printing techniques that depend on the types of materials, or inks, used. Here, different types of organs (bone, cartilage, heart valve, liver, and skin) that are aided by 3D printed scaffolds and printing methods that are applied in the biomedical fields are reviewed.
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Affiliation(s)
- Justin J. Chung
- Center for Biomaterials, Korea Institute of Science and Technology, Seoul, South Korea
| | - Heejung Im
- Center for Biomaterials, Korea Institute of Science and Technology, Seoul, South Korea
| | - Soo Hyun Kim
- Center for Biomaterials, Korea Institute of Science and Technology, Seoul, South Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, South Korea
| | - Jong Woong Park
- Department of Orthopedic Surgery, Korea University Anam Hospital, Seoul, South Korea
| | - Youngmee Jung
- Center for Biomaterials, Korea Institute of Science and Technology, Seoul, South Korea
- School of Electrical and Electronic Engineering, Yonsei University, Seoul, South Korea
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31
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Zimmermann J, Distler T, Boccaccini AR, van Rienen U. Numerical Simulations as Means for Tailoring Electrically Conductive Hydrogels Towards Cartilage Tissue Engineering by Electrical Stimulation. Molecules 2020; 25:E4750. [PMID: 33081205 PMCID: PMC7587583 DOI: 10.3390/molecules25204750] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/11/2020] [Accepted: 10/06/2020] [Indexed: 12/12/2022] Open
Abstract
Cartilage regeneration is a clinical challenge. In recent years, hydrogels have emerged as implantable scaffolds in cartilage tissue engineering. Similarly, electrical stimulation has been employed to improve matrix synthesis of cartilage cells, and thus to foster engineering and regeneration of cartilage tissue. The combination of hydrogels and electrical stimulation may pave the way for new clinical treatment of cartilage lesions. To find the optimal electric properties of hydrogels, theoretical considerations and corresponding numerical simulations are needed to identify well-suited initial parameters for experimental studies. We present the theoretical analysis of a hydrogel in a frequently used electrical stimulation device for cartilage regeneration and tissue engineering. By means of equivalent circuits, finite element analysis, and uncertainty quantification, we elucidate the influence of the geometric and dielectric properties of cell-seeded hydrogels on the capacitive-coupling electrical field stimulation. Moreover, we discuss the possibility of cellular organisation inside the hydrogel due to forces generated by the external electric field. The introduced methodology is easily reusable by other researchers and allows to directly develop novel electrical stimulation study designs. Thus, this study paves the way for the design of future experimental studies using electrically conductive hydrogels and electrical stimulation for tissue engineering.
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Affiliation(s)
- Julius Zimmermann
- Institute of General Electrical Engineering, University of Rostock, 18051 Rostock, Germany;
| | - Thomas Distler
- Institute of Biomaterials, Friedrich Alexander University Erlangen-Nuremberg, 91058 Erlangen, Germany; (T.D.); (A.R.B.)
| | - Aldo R. Boccaccini
- Institute of Biomaterials, Friedrich Alexander University Erlangen-Nuremberg, 91058 Erlangen, Germany; (T.D.); (A.R.B.)
| | - Ursula van Rienen
- Institute of General Electrical Engineering, University of Rostock, 18051 Rostock, Germany;
- Department Life, Light & Matter, University of Rostock, 18051 Rostock, Germany
- Department of Ageing of Individuals and Society, Interdisciplinary Faculty, University of Rostock, 18051 Rostock, Germany
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Clark JN, Heyraud A, Tavana S, Al-Jabri T, Tallia F, Clark B, Blunn GW, Cobb JP, Hansen U, Jones JR, Jeffers JRT. Exploratory Full-Field Mechanical Analysis across the Osteochondral Tissue-Biomaterial Interface in an Ovine Model. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3911. [PMID: 32899671 PMCID: PMC7559087 DOI: 10.3390/ma13183911] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/31/2020] [Accepted: 09/01/2020] [Indexed: 11/26/2022]
Abstract
Osteochondral injuries are increasingly prevalent, yet success in articular cartilage regeneration remains elusive, necessitating the development of new surgical interventions and novel medical devices. As part of device development, animal models are an important milestone in illustrating functionality of novel implants. Inspection of the tissue-biomaterial system is vital to understand and predict load-sharing capacity, fixation mechanics and micromotion, none of which are directly captured by traditional post-mortem techniques. This study aims to characterize the localised mechanics of an ex vivo ovine osteochondral tissue-biomaterial system extracted following six weeks in vivo testing, utilising laboratory micro-computed tomography, in situ loading and digital volume correlation. Herein, the full-field displacement and strain distributions were visualised across the interface of the system components, including newly formed tissue. The results from this exploratory study suggest that implant micromotion in respect to the surrounding tissue could be visualised in 3D across multiple loading steps. The methodology provides a non-destructive means to assess device performance holistically, informing device design to improve osteochondral regeneration strategies.
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Affiliation(s)
- Jeffrey N. Clark
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK; (J.N.C.); (S.T.); (U.H.)
- Department of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, UK; (A.H.); (F.T.); (J.R.J.)
| | - Agathe Heyraud
- Department of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, UK; (A.H.); (F.T.); (J.R.J.)
| | - Saman Tavana
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK; (J.N.C.); (S.T.); (U.H.)
| | - Talal Al-Jabri
- Department of Surgery and Cancer, Imperial College London, London SW7 2AZ, UK; (T.A.-J.); (J.P.C.)
| | - Francesca Tallia
- Department of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, UK; (A.H.); (F.T.); (J.R.J.)
| | - Brett Clark
- Imaging and Analysis Centre, Natural History Museum London, London SW7 5BD, UK;
| | - Gordon W. Blunn
- School of Pharmacy and Biomedical Science, University of Portsmouth, Portsmouth PO1 2DT, UK;
| | - Justin P. Cobb
- Department of Surgery and Cancer, Imperial College London, London SW7 2AZ, UK; (T.A.-J.); (J.P.C.)
| | - Ulrich Hansen
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK; (J.N.C.); (S.T.); (U.H.)
| | - Julian R. Jones
- Department of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, UK; (A.H.); (F.T.); (J.R.J.)
| | - Jonathan R. T. Jeffers
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK; (J.N.C.); (S.T.); (U.H.)
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Clark JN, Tavana S, Heyraud A, Tallia F, Jones JR, Hansen U, Jeffers JRT. Quantifying 3D Strain in Scaffold Implants for Regenerative Medicine. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3890. [PMID: 32899192 PMCID: PMC7504351 DOI: 10.3390/ma13173890] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 08/27/2020] [Accepted: 09/01/2020] [Indexed: 12/30/2022]
Abstract
Regenerative medicine solutions require thoughtful design to elicit the intended biological response. This includes the biomechanical stimulus to generate an appropriate strain in the scaffold and surrounding tissue to drive cell lineage to the desired tissue. To provide appropriate strain on a local level, new generations of scaffolds often involve anisotropic spatially graded mechanical properties that cannot be characterised with traditional materials testing equipment. Volumetric examination is possible with three-dimensional (3D) imaging, in situ loading and digital volume correlation (DVC). Micro-CT and DVC were utilised in this study on two sizes of 3D-printed inorganic/organic hybrid scaffolds (n = 2 and n = 4) with a repeating homogenous structure intended for cartilage regeneration. Deformation was observed with a spatial resolution of under 200 µm whilst maintaining displacement random errors of 0.97 µm, strain systematic errors of 0.17% and strain random errors of 0.031%. Digital image correlation (DIC) provided an analysis of the external surfaces whilst DVC enabled localised strain concentrations to be examined throughout the full 3D volume. Strain values derived using DVC correlated well against manually calculated ground-truth measurements (R2 = 0.98, n = 8). The technique ensures the full 3D micro-mechanical environment experienced by cells is intimately considered, enabling future studies to further examine scaffold designs for regenerative medicine.
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Affiliation(s)
- Jeffrey N. Clark
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK; (J.N.C.); (S.T.); (U.H.)
- Department of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, UK; (A.H.); (F.T.); (J.R.J.)
| | - Saman Tavana
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK; (J.N.C.); (S.T.); (U.H.)
| | - Agathe Heyraud
- Department of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, UK; (A.H.); (F.T.); (J.R.J.)
| | - Francesca Tallia
- Department of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, UK; (A.H.); (F.T.); (J.R.J.)
| | - Julian R. Jones
- Department of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, UK; (A.H.); (F.T.); (J.R.J.)
| | - Ulrich Hansen
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK; (J.N.C.); (S.T.); (U.H.)
| | - Jonathan R. T. Jeffers
- Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK; (J.N.C.); (S.T.); (U.H.)
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