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Han H, Zhao X, Ma H, Zhang Y, Lei B. Multifunctional injectable hydrogels with controlled delivery of bioactive factors for efficient repair of intervertebral disc degeneration. Heliyon 2023; 9:e21867. [PMID: 38027562 PMCID: PMC10665751 DOI: 10.1016/j.heliyon.2023.e21867] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/07/2023] [Accepted: 10/30/2023] [Indexed: 12/01/2023] Open
Abstract
Millions of people worldwide suffer from intervertebral disc degeneration (IVDD), which imposes a significant socioeconomic burden on society. There is an urgent clinical demand for more effective treatments for IVDD because conventional treatments can only alleviate the symptoms rather than preventing the progression of IVDD. Hydrogels, a class of elastic biomaterials with good biocompatibility, are promising candidates for intervertebral disc repair and regeneration. In recent years, various hydrogels have been investigated in vitro and in vivo for the repair of intervertebral discs, some of which are ready for clinical testing. This review summarizes the latest findings and developments in using bioactive factors-released bioactive injectable hydrogels for the repair and regeneration of intervertebral discs. It focuses on the analysis and summary of the use of multifunctional injectable hydrogels to delivery bioactive factors (cells, exosomes, growth factors, genes, drugs) for disc regeneration, providing guidance for future study. Finally, we discussed and analyzed the optimal timing for the application of controlled-release hydrogels in the treatment of IVDD to meet the high standards required for intervertebral disc regeneration and precision medicine.
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Affiliation(s)
- Hao Han
- Department of Orthopaedics of the First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Xiaoming Zhao
- Department of Orthopaedics of the First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Hongyun Ma
- Department of Orthopaedics of the First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Yingang Zhang
- Department of Orthopaedics of the First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, 710061, China
| | - Bo Lei
- Department of Orthopaedics of the First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, 710061, China
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710000, China
- Fronter Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710000, China
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Clark A, Kulwatno J, Kanovka SS, McKinley TO, Potter BK, Goldman SM, Dearth CL. In situ forming biomaterials as muscle void fillers for the provisional treatment of volumetric muscle loss injuries. Mater Today Bio 2023; 22:100781. [PMID: 37736246 PMCID: PMC10509707 DOI: 10.1016/j.mtbio.2023.100781] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 08/25/2023] [Accepted: 08/28/2023] [Indexed: 09/23/2023] Open
Abstract
Volumetric muscle loss (VML) represents a devastating extremity injury which leads to chronic functional deficits and disability and is unrecoverable through normal healing pathways. When left untreated, the VML pathophysiology creates many challenges towards successful treatment, such as altered residual muscle architecture, excessive fibrosis, and contracture(s). As such, innovative approaches and technologies are needed to prevent or reverse these adverse sequelae. Development of a rationally designed biomaterial technology which is intended to be acutely placed within a VML defect - i.e., to serve as a muscle void filler (MVF) by maintaining the VML defect - could address this clinical unmet need by preventing these adverse sequelae as well as enabling multi-staged treatment approaches. To that end, three biomaterials were evaluated for their ability to serve as a provisional MVF treatment intended to stabilize a VML defect in a rat model for an extended period (28 days): polyvinyl alcohol (PVA), hyaluronic acid and polyethylene glycol combination (HA + PEG), and silicone, a clinically used soft tissue void filler. HA + PEG biomaterial showed signs of deformation, while both PVA and silicone did not. There were no differences between treatment groups for their effects on adjacent muscle fiber count and size distribution. Not surprisingly, silicone elicited robust fibrotic response resulting in a fibrotic barrier with a large infiltration of macrophages, a response not seen with either the PVA or HA + PEG. Taken together, PVA was found to be the best material to be used as a provisional MVF for maintaining VML defect volume while minimizing adverse effects on the surrounding muscle.
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Affiliation(s)
- Andrew Clark
- Extremity Trauma and Amputation Center of Excellence, Defense Health Agency, Bethesda, MD, USA
- Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD, USA
| | - Jonathan Kulwatno
- Extremity Trauma and Amputation Center of Excellence, Defense Health Agency, Bethesda, MD, USA
- Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Sergey S. Kanovka
- Extremity Trauma and Amputation Center of Excellence, Defense Health Agency, Bethesda, MD, USA
- Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Todd O. McKinley
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Benjamin K. Potter
- Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
- Department of Orthopaedic Surgery, Walter Reed National Military Medical Center, Bethesda, MD, USA
| | - Stephen M. Goldman
- Extremity Trauma and Amputation Center of Excellence, Defense Health Agency, Bethesda, MD, USA
- Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Christopher L. Dearth
- Extremity Trauma and Amputation Center of Excellence, Defense Health Agency, Bethesda, MD, USA
- Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
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Wöltje M, Künzelmann L, Belgücan B, Croft AS, Voumard B, Bracher S, Zysset P, Gantenbein B, Cherif C, Aibibu D. Textile Design of an Intervertebral Disc Replacement Device from Silk Yarn. Biomimetics (Basel) 2023; 8:biomimetics8020152. [PMID: 37092404 PMCID: PMC10123607 DOI: 10.3390/biomimetics8020152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/06/2023] [Accepted: 04/09/2023] [Indexed: 04/25/2023] Open
Abstract
Low back pain is often due to degeneration of the intervertebral discs (IVD). It is one of the most common age- and work-related problems in today's society. Current treatments are not able to efficiently restore the full function of the IVD. Therefore, the aim of the present work was to reconstruct the two parts of the intervertebral disc-the annulus fibrosus (AF) and the nucleus pulposus (NP)-in such a way that the natural structural features were mimicked by a textile design. Silk was selected as the biomaterial for realization of a textile IVD because of its cytocompatibility, biodegradability, high strength, stiffness, and toughness, both in tension and compression. Therefore, an embroidered structure made of silk yarn was developed that reproduces the alternating fiber structure of +30° and -30° fiber orientation found in the AF and mimics its lamellar structure. The developed embroidered ribbons showed a tensile strength that corresponded to that of the natural AF. Fiber additive manufacturing with 1 mm silk staple fibers was used to replicate the fiber network of the NP and generate an open porous textile 3D structure that may serve as a reinforcement structure for the gel-like NP.
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Affiliation(s)
- Michael Wöltje
- Institute of Textile Machinery and High-Performance Material Technology, Technische Universität Dresden, 01602 Dresden, Germany
| | - Liesa Künzelmann
- Institute of Textile Machinery and High-Performance Material Technology, Technische Universität Dresden, 01602 Dresden, Germany
| | - Basak Belgücan
- Institute of Textile Machinery and High-Performance Material Technology, Technische Universität Dresden, 01602 Dresden, Germany
| | - Andreas S Croft
- Tissue Engineering for Orthopaedic and Mechanobiology, Bone and Joint Program, Department for BioMedical Research (DBMR), Medical Faculty, University of Bern, 3008 Bern, Switzerland
| | - Benjamin Voumard
- ARTORG Center for Biomedical Engineering Research, University of Bern, 3008 Bern, Switzerland
| | - Stefan Bracher
- ARTORG Center for Biomedical Engineering Research, University of Bern, 3008 Bern, Switzerland
| | - Philippe Zysset
- ARTORG Center for Biomedical Engineering Research, University of Bern, 3008 Bern, Switzerland
| | - Benjamin Gantenbein
- Tissue Engineering for Orthopaedic and Mechanobiology, Bone and Joint Program, Department for BioMedical Research (DBMR), Medical Faculty, University of Bern, 3008 Bern, Switzerland
- Department of Orthopedic Surgery and Traumatology, Inselspital, University of Bern, 3010 Bern, Switzerland
| | - Chokri Cherif
- Institute of Textile Machinery and High-Performance Material Technology, Technische Universität Dresden, 01602 Dresden, Germany
| | - Dilbar Aibibu
- Institute of Textile Machinery and High-Performance Material Technology, Technische Universität Dresden, 01602 Dresden, Germany
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Herrera Quijano MA, Sharma N, Morissette Martin P, Séguin CA, Flynn LE. Development of 2-D and 3-D culture platforms derived from decellularized nucleus pulposus. Front Bioeng Biotechnol 2022; 10:937239. [PMID: 36237211 PMCID: PMC9551564 DOI: 10.3389/fbioe.2022.937239] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 08/30/2022] [Indexed: 11/13/2022] Open
Abstract
Bioscaffolds derived from the extracellular matrix (ECM) have shown the capacity to promote regeneration by providing tissue-specific biological instructive cues that can enhance cell survival and direct lineage-specific differentiation. This study focused on the development and characterization of two-dimensional (2-D) and three-dimensional (3-D) cell culture platforms incorporating decellularized nucleus pulposus (DNP). First, a detergent-free protocol was developed for decellularizing bovine nucleus pulposus (NP) tissues that was effective at removing cellular content while preserving key ECM constituents including collagens, glycosaminoglycans, and the cell-adhesive glycoproteins laminin and fibronectin. Next, novel 2-D coatings were generated using the DNP or commercially-sourced bovine collagen type I (COL) as a non-tissue-specific control. In addition, cryo-milled DNP or COL particles were incorporated within methacrylated chondroitin sulphate (MCS) hydrogels as a 3-D cell culture platform for exploring the effects of ECM particle composition. Culture studies showed that the 2-D coatings derived from the DNP could support cell attachment and growth, but did not maintain or rescue the phenotype of primary bovine NP cells, which de-differentiated when serially passaged in monolayer culture. Similarly, while bovine NP cells remained highly viable following encapsulation and 14 days of culture within the hydrogel composites, the incorporation of DNP particles within the MCS hydrogels was insufficient to maintain or rescue changes in NP phenotype associated with extended in vitro culture based on gene expression patterns. Overall, DNP produced with our new decellularization protocol was successfully applied to generate both 2-D and 3-D bioscaffolds; however, further studies are required to assess if these platforms can be combined with additional components of the endogenous NP microenvironment to stimulate regeneration or lineage-specific cell differentiation.
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Affiliation(s)
- Marco A. Herrera Quijano
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, Canada
- Bone and Joint Institute, The University of Western Ontario, London, ON, Canada
| | - Nadia Sharma
- Bone and Joint Institute, The University of Western Ontario, London, ON, Canada
- School of Biomedical Engineering, The University of Western Ontario, London, ON, Canada
| | - Pascal Morissette Martin
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, Canada
| | - Cheryle A. Séguin
- Bone and Joint Institute, The University of Western Ontario, London, ON, Canada
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, Canada
- *Correspondence: Lauren E. Flynn, ; Cheryle A. Séguin,
| | - Lauren E. Flynn
- Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON, Canada
- Bone and Joint Institute, The University of Western Ontario, London, ON, Canada
- School of Biomedical Engineering, The University of Western Ontario, London, ON, Canada
- Department of Chemical and Biochemical Engineering, Faculty of Engineering, The University of Western Ontario, London, ON, Canada
- *Correspondence: Lauren E. Flynn, ; Cheryle A. Séguin,
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Importance of Matrix Cues on Intervertebral Disc Development, Degeneration, and Regeneration. Int J Mol Sci 2022; 23:ijms23136915. [PMID: 35805921 PMCID: PMC9266338 DOI: 10.3390/ijms23136915] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/17/2022] [Accepted: 06/20/2022] [Indexed: 01/25/2023] Open
Abstract
Back pain is one of the leading causes of disability worldwide and is frequently caused by degeneration of the intervertebral discs. The discs’ development, homeostasis, and degeneration are driven by a complex series of biochemical and physical extracellular matrix cues produced by and transmitted to native cells. Thus, understanding the roles of different cues is essential for designing effective cellular and regenerative therapies. Omics technologies have helped identify many new matrix cues; however, comparatively few matrix molecules have thus far been incorporated into tissue engineered models. These include collagen type I and type II, laminins, glycosaminoglycans, and their biomimetic analogues. Modern biofabrication techniques, such as 3D bioprinting, are also enabling the spatial patterning of matrix molecules and growth factors to direct regional effects. These techniques should now be applied to biochemically, physically, and structurally relevant disc models incorporating disc and stem cells to investigate the drivers of healthy cell phenotype and differentiation. Such research will inform the development of efficacious regenerative therapies and improved clinical outcomes.
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Mohd Isa IL, Mokhtar SA, Abbah SA, Fauzi MB, Devitt A, Pandit A. Intervertebral Disc Degeneration: Biomaterials and Tissue Engineering Strategies toward Precision Medicine. Adv Healthc Mater 2022; 11:e2102530. [PMID: 35373924 DOI: 10.1002/adhm.202102530] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 03/01/2022] [Indexed: 12/22/2022]
Abstract
Intervertebral disc degeneration is a common cause of discogenic low back pain resulting in significant disability. Current conservative or surgical intervention treatments do not reverse the underlying disc degeneration or regenerate the disc. Biomaterial-based tissue engineering strategies exhibit the potential to regenerate the disc due to their capacity to modulate local tissue responses, maintain the disc phenotype, attain biochemical homeostasis, promote anatomical tissue repair, and provide functional mechanical support. Despite preliminary positive results in preclinical models, these approaches have limited success in clinical trials as they fail to address discogenic pain. This review gives insights into the understanding of intervertebral disc pathology, the emerging concept of precision medicine, and the rationale of personalized biomaterial-based tissue engineering tailored to the severity of the disease targeting early, mild, or severe degeneration, thereby enhancing the efficacy of the treatment for disc regeneration and ultimately to alleviate discogenic pain. Further research is required to assess the relationship between disc degeneration and lower back pain for developing future clinically relevant therapeutic interventions targeted towards the subgroup of degenerative disc disease patients.
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Affiliation(s)
- Isma Liza Mohd Isa
- Department of Anatomy Faculty of Medicine Universiti Kebangsaan Malaysia Kuala Lumpur 56000 Malaysia
- CÚRAM SFI Research Centre for Medical Devices National University of Ireland Galway H91W2TY Ireland
| | - Sabarul Afian Mokhtar
- Department of Orthopaedics and Traumatology Faculty of Medicine Universiti Kebangsaan Malaysia Kuala Lumpur 56000 Malaysia
| | - Sunny A. Abbah
- CÚRAM SFI Research Centre for Medical Devices National University of Ireland Galway H91W2TY Ireland
| | - Mh Busra Fauzi
- Centre for Tissue Engineering and Regenerative Medicine Faculty of Medicine Universiti Kebangsaan Malaysia Kuala Lumpur 56000 Malaysia
| | - Aiden Devitt
- CÚRAM SFI Research Centre for Medical Devices National University of Ireland Galway H91W2TY Ireland
- Department of Orthopedic Surgery University Hospital Galway Galway H91YR71 Ireland
| | - Abhay Pandit
- CÚRAM SFI Research Centre for Medical Devices National University of Ireland Galway H91W2TY Ireland
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7
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Guo W, Douma L, Hu MH, Eglin D, Alini M, Šećerović A, Grad S, Peng X, Zou X, D'Este M, Peroglio M. Hyaluronic acid-based interpenetrating network hydrogel as a cell carrier for nucleus pulposus repair. Carbohydr Polym 2022; 277:118828. [PMID: 34893245 DOI: 10.1016/j.carbpol.2021.118828] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 10/08/2021] [Accepted: 10/27/2021] [Indexed: 01/19/2023]
Abstract
Hyaluronic acid (HA) is a key component of the intervertebral disc (IVD) that is widely investigated as an IVD biomaterial. One persisting challenge is introducing materials capable of supporting cell encapsulation and function, yet with sufficient mechanical stability. In this study, a hybrid interpenetrating polymer network (IPN) was produced as a non-covalent hydrogel, based on a covalently cross-linked HA (HA-BDDE) and HA-poly(N-isopropylacrylamide) (HA-pNIPAM). The hybrid IPN was investigated for its physicochemical properties, with histology and gene expression analysis to determine matrix deposition in vitro and in an ex vivo model. The IPN hydrogel displayed cohesiveness for at least one week and rheological properties resembling native nucleus pulposus (NP) tissue. When implanted in an ex vivo IVD organ culture model, the IPN supported cell viability, phenotype expression of encapsulated NP cells and IVD matrix production over four weeks under physiological loading. Overall, our results indicate the therapeutic potential of this HA-based IPN hydrogel for IVD regeneration.
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Affiliation(s)
- Wei Guo
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland; Department of Spinal Surgery, Orthopaedic Research Institute, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, PR China; Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, PR China
| | - Luzia Douma
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland
| | - Ming Hsien Hu
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland
| | - David Eglin
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland
| | - Mauro Alini
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland
| | - Amra Šećerović
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland
| | - Sibylle Grad
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland
| | - Xinsheng Peng
- Department of Spinal Surgery, Orthopaedic Research Institute, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, PR China; Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, PR China
| | - Xuenong Zou
- Department of Spinal Surgery, Orthopaedic Research Institute, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, PR China; Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, PR China
| | - Matteo D'Este
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland.
| | - Marianna Peroglio
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Switzerland
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Dubay R, Urban JN, Darling EM. Single-Cell Microgels for Diagnostics and Therapeutics. ADVANCED FUNCTIONAL MATERIALS 2021; 31:2009946. [PMID: 36329867 PMCID: PMC9629779 DOI: 10.1002/adfm.202009946] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Indexed: 05/14/2023]
Abstract
Cell encapsulation within hydrogel droplets is transforming what is feasible in multiple fields of biomedical science such as tissue engineering and regenerative medicine, in vitro modeling, and cell-based therapies. Recent advances have allowed researchers to miniaturize material encapsulation complexes down to single-cell scales, where each complex, termed a single-cell microgel, contains only one cell surrounded by a hydrogel matrix while remaining <100 μm in size. With this achievement, studies requiring single-cell resolution are now possible, similar to those done using liquid droplet encapsulation. Of particular note, applications involving long-term in vitro cultures, modular bioinks, high-throughput screenings, and formation of 3D cellular microenvironments can be tuned independently to suit the needs of individual cells and experimental goals. In this progress report, an overview of established materials and techniques used to fabricate single-cell microgels, as well as insight into potential alternatives is provided. This focused review is concluded by discussing applications that have already benefited from single-cell microgel technologies, as well as prospective applications on the cusp of achieving important new capabilities.
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Affiliation(s)
- Ryan Dubay
- Center for Biomedical Engineering, Brown University, 175 Meeting St., Providence, RI 02912, USA
- Draper, 555 Technology Sq., Cambridge, MA 02139, USA
| | - Joseph N Urban
- Center for Biomedical Engineering, Brown University, 175 Meeting St., Providence, RI 02912, USA
| | - Eric M Darling
- Department of Molecular Pharmacology, Physiology, and Biotechnology, Center for Biomedical Engineering, School of Engineering, Department of Orthopaedics, Brown University, 175 Meeting St., Providence, RI 02912, USA
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Abstract
Intervertebral disc (IVD) degeneration is a leading cause of chronic low back pain (LBP) that results in serious disability and significant economic burden. IVD degeneration alters the disc structure and spine biomechanics, resulting in subsequent structural changes throughout the spine. Currently, treatments of chronic LBP due to IVD degeneration include conservative treatments, such as pain medication and physiotherapy, and surgical treatments, such as removal of herniated disc without or with spinal fusion. However, none of these treatments can completely restore a degenerated disc and its function. Thus, although the exact pathogenesis of disc degeneration remains unclear, there are studies examining the effectiveness of biological approaches, such as growth factor injection, gene therapy, and cell transplantation, in promoting IVD regeneration. Furthermore, tissue engineering using a combination of cell transplantation and biomaterials has emerged as a promising new approach for repair or restoration of degenerated discs. The main purpose of this review was to provide an overview of the current status of tissue engineering applications for IVD regenerative therapy by performing literature searches using PubMed. Significant advances in tissue engineering have opened the door to a new generation of regenerative therapies for the treatment of chronic discogenic LBP.
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Baumgartner L, Wuertz-Kozak K, Le Maitre CL, Wignall F, Richardson SM, Hoyland J, Ruiz Wills C, González Ballester MA, Neidlin M, Alexopoulos LG, Noailly J. Multiscale Regulation of the Intervertebral Disc: Achievements in Experimental, In Silico, and Regenerative Research. Int J Mol Sci 2021; 22:E703. [PMID: 33445782 PMCID: PMC7828304 DOI: 10.3390/ijms22020703] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/22/2020] [Accepted: 12/24/2020] [Indexed: 12/17/2022] Open
Abstract
Intervertebral disc (IVD) degeneration is a major risk factor of low back pain. It is defined by a progressive loss of the IVD structure and functionality, leading to severe impairments with restricted treatment options due to the highly demanding mechanical exposure of the IVD. Degenerative changes in the IVD usually increase with age but at an accelerated rate in some individuals. To understand the initiation and progression of this disease, it is crucial to identify key top-down and bottom-up regulations' processes, across the cell, tissue, and organ levels, in health and disease. Owing to unremitting investigation of experimental research, the comprehension of detailed cell signaling pathways and their effect on matrix turnover significantly rose. Likewise, in silico research substantially contributed to a holistic understanding of spatiotemporal effects and complex, multifactorial interactions within the IVD. Together with important achievements in the research of biomaterials, manifold promising approaches for regenerative treatment options were presented over the last years. This review provides an integrative analysis of the current knowledge about (1) the multiscale function and regulation of the IVD in health and disease, (2) the possible regenerative strategies, and (3) the in silico models that shall eventually support the development of advanced therapies.
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Affiliation(s)
- Laura Baumgartner
- BCN MedTech, Department of Information and Communication Technologies, Universitat Pompeu Fabra, 08018 Barcelona, Spain; (L.B.); (C.R.W.); (M.A.G.B.)
| | - Karin Wuertz-Kozak
- Department of Biomedical Engineering, Rochester Institute of Technology (RIT), Rochester, NY 14623, USA;
- Schön Clinic Munich Harlaching, Spine Center, Academic Teaching Hospital and Spine Research Institute of the Paracelsus Medical University Salzburg (Austria), 81547 Munich, Germany
| | - Christine L. Le Maitre
- Biomolecular Sciences Research Centre, Sheffield Hallam University, Sheffield S1 1WB, UK;
| | - Francis Wignall
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Sciences Centre, Oxford Road, Manchester M13 9PT, UK; (F.W.); (S.M.R.); (J.H.)
| | - Stephen M. Richardson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Sciences Centre, Oxford Road, Manchester M13 9PT, UK; (F.W.); (S.M.R.); (J.H.)
| | - Judith Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Sciences Centre, Oxford Road, Manchester M13 9PT, UK; (F.W.); (S.M.R.); (J.H.)
| | - Carlos Ruiz Wills
- BCN MedTech, Department of Information and Communication Technologies, Universitat Pompeu Fabra, 08018 Barcelona, Spain; (L.B.); (C.R.W.); (M.A.G.B.)
| | - Miguel A. González Ballester
- BCN MedTech, Department of Information and Communication Technologies, Universitat Pompeu Fabra, 08018 Barcelona, Spain; (L.B.); (C.R.W.); (M.A.G.B.)
- Catalan Institution for Research and Advanced Studies (ICREA), Pg. Lluis Companys 23, 08010 Barcelona, Spain
| | - Michael Neidlin
- Department of Mechanical Engineering, National Technical University of Athens, 15780 Athens, Greece; (M.N.); (L.G.A.)
| | - Leonidas G. Alexopoulos
- Department of Mechanical Engineering, National Technical University of Athens, 15780 Athens, Greece; (M.N.); (L.G.A.)
| | - Jérôme Noailly
- BCN MedTech, Department of Information and Communication Technologies, Universitat Pompeu Fabra, 08018 Barcelona, Spain; (L.B.); (C.R.W.); (M.A.G.B.)
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11
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Tang G, Zhou B, Li F, Wang W, Liu Y, Wang X, Liu C, Ye X. Advances of Naturally Derived and Synthetic Hydrogels for Intervertebral Disk Regeneration. Front Bioeng Biotechnol 2020; 8:745. [PMID: 32714917 PMCID: PMC7344321 DOI: 10.3389/fbioe.2020.00745] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 06/10/2020] [Indexed: 12/15/2022] Open
Abstract
Intervertebral disk (IVD) degeneration is associated with most cases of cervical and lumbar spine pathologies, amongst which chronic low back pain has become the primary cause for loss of quality-adjusted life years. Biomaterials science and tissue engineering have made significant progress in the replacement, repair and regeneration of IVD tissue, wherein hydrogel has been recognized as an ideal biomaterial to promote IVD regeneration in recent years. Aspects such as ease of use, mechanical properties, regenerative capacity, and their applicability as carriers for regenerative and anti-degenerative factors determine their suitability for IVD regeneration. This current review provides an overview of naturally derived and synthetic hydrogels that are related to their clinical applications for IVD regeneration. Although each type has its own unique advantages, it rarely becomes a standard product in truly clinical practice, and a more rational design is proposed for future use of biomaterials for IVD regeneration. This review aims to provide a starting point and inspiration for future research work on development of novel biomaterials and biotechnology.
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Affiliation(s)
- Guoke Tang
- Department of Orthopedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
- Department of Spine Surgery, The Affiliated Zhuzhou Hospital of Xiangya School of Medical CSU, Zhuzhou, China
| | - Bingyan Zhou
- Department of Spine Surgery, The Affiliated Zhuzhou Hospital of Xiangya School of Medical CSU, Zhuzhou, China
| | - Feng Li
- Department of Spine Surgery, The Affiliated Zhuzhou Hospital of Xiangya School of Medical CSU, Zhuzhou, China
| | - Weiheng Wang
- Department of Orthopedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Yi Liu
- Department of Orthopedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Xing Wang
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Chao Liu
- Department of Spine Surgery, The Affiliated Zhuzhou Hospital of Xiangya School of Medical CSU, Zhuzhou, China
| | - Xiaojian Ye
- Department of Orthopedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, China
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12
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Tammaro O, Costagliola di Polidoro A, Romano E, Netti PA, Torino E. A Microfluidic Platform to design Multimodal PEG - crosslinked Hyaluronic Acid Nanoparticles (PEG-cHANPs) for diagnostic applications. Sci Rep 2020; 10:6028. [PMID: 32265496 PMCID: PMC7138812 DOI: 10.1038/s41598-020-63234-x] [Citation(s) in RCA: 12] [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: 07/03/2019] [Accepted: 03/27/2020] [Indexed: 12/23/2022] Open
Abstract
The combination of different imaging modalities can allow obtaining simultaneously morphological and functional information providing a more accurate diagnosis. This advancement can be reached through the use of multimodal tracers, and nanotechnology-based solutions allow the simultaneous delivery of different diagnostic compounds moving a step towards their safe administration for multimodal imaging acquisition. Among different processes, nanoprecipitation is a consolidate method for the production of nanoparticles and its implementation in microfluidics can further improve the control over final product features accelerating its potential clinical translation. A Hydrodynamic Flow Focusing (HFF) approach is proposed to produce through a ONE-STEP process Multimodal Pegylated crosslinked Hyaluronic Acid NanoParticles (PEG-cHANPs). A monodisperse population of NPs with an average size of 140 nm is produced and Gd-DTPA and ATTO488 compounds are co-encapsulated, simultaneously. The results showed that the obtained multimodal nanoparticle could work as MRI/Optical imaging probe. Furthermore, under the Hydrodenticity effect, a boosting of the T1 values with respect to free Gd-DTPA is preserved.
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Affiliation(s)
- Olimpia Tammaro
- University of Naples Federico II, Department of Chemical, Materials and Production Engineering (DICMaPI), P.le Tecchio 80, 80125, Naples, Italy
- Fondazione Istituto Italiano di Tecnologia, IIT, Largo Barsanti e Matteucci 53, 80125, Naples, Italy
| | - Angela Costagliola di Polidoro
- University of Naples Federico II, Department of Chemical, Materials and Production Engineering (DICMaPI), P.le Tecchio 80, 80125, Naples, Italy
- Fondazione Istituto Italiano di Tecnologia, IIT, Largo Barsanti e Matteucci 53, 80125, Naples, Italy
| | - Eugenia Romano
- University of Naples Federico II, Department of Chemical, Materials and Production Engineering (DICMaPI), P.le Tecchio 80, 80125, Naples, Italy
- Fondazione Istituto Italiano di Tecnologia, IIT, Largo Barsanti e Matteucci 53, 80125, Naples, Italy
| | - Paolo Antonio Netti
- University of Naples Federico II, Department of Chemical, Materials and Production Engineering (DICMaPI), P.le Tecchio 80, 80125, Naples, Italy
- Fondazione Istituto Italiano di Tecnologia, IIT, Largo Barsanti e Matteucci 53, 80125, Naples, Italy
- Interdisciplinary Research Center on Biomaterials, CRIB, University of Naples Federico II, P.le Tecchio 80, 80125, Naples, Italy
| | - Enza Torino
- University of Naples Federico II, Department of Chemical, Materials and Production Engineering (DICMaPI), P.le Tecchio 80, 80125, Naples, Italy.
- Fondazione Istituto Italiano di Tecnologia, IIT, Largo Barsanti e Matteucci 53, 80125, Naples, Italy.
- Interdisciplinary Research Center on Biomaterials, CRIB, University of Naples Federico II, P.le Tecchio 80, 80125, Naples, Italy.
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13
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Shi K, Huang Y, Huang L, Wang J, Wang Y, Feng G, Liu L, Song Y. [Research progress of hydrogel used for regeneration of nucleus pulposus in intervertebral disc degeneration]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2020; 34:275-284. [PMID: 32174070 DOI: 10.7507/1002-1892.201907092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective To summarize the research progress of hydrogels for the regeneration and repair of degenerative intervertebral disc and to investigate the potential of hydrogels in clinical application. Methods The related literature about the role of hydrogels in intervertebral disc degeneration especially for nucleus pulposus was reviewed and analyzed. Results Hydrogels share similar properties with nucleus pulposus, and it plays an important role in the regeneration and repair of degenerative intervertebral disc, which can be mainly applied in nucleus pulposus prosthesis, hydrogel-based cell therapy, non-cellular therapy, and tissue engineering repair. Conclusion Hydrogels are widely used in the regeneration and repair of intervertebral disc, which provides a potential treatment for intervertebral disc degeneration.
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Affiliation(s)
- Kun Shi
- Departmen of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Yong Huang
- Departmen of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Leizhen Huang
- Departmen of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Jingcheng Wang
- Departmen of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Yuhan Wang
- Departmen of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Ganjun Feng
- Departmen of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Limin Liu
- Departmen of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Yueming Song
- Departmen of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
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14
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Long RG, Ferguson SJ, Benneker LM, Sakai D, Li Z, Pandit A, Grijpma DW, Eglin D, Zeiter S, Schmid T, Eberli U, Nehrbass D, Di Pauli von Treuheim T, Alini M, Iatridis JC, Grad S. Morphological and biomechanical effects of annulus fibrosus injury and repair in an ovine cervical model. JOR Spine 2020; 3:e1074. [PMID: 32211587 PMCID: PMC7084058 DOI: 10.1002/jsp2.1074] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/17/2019] [Accepted: 11/12/2019] [Indexed: 12/16/2022] Open
Abstract
Tissue engineering repair of annulus fibrosus (AF) defects has the potential to prevent disability and pain from intervertebral disc (IVD) herniation and its progression to degeneration. Clinical translation of AF repair methods requires assessment in long-term large animal models. An ovine AF injury model was developed using cervical spinal levels and a biopsy-type AF defect to assess composite tissue engineering repair in 1-month and 12-month studies. The repair used a fibrin hydrogel crosslinked with genipin (FibGen) to seal defects, poly(trimethylene carbonate) (PTMC) scaffolds to replace lost AF tissue, and polyurethane membranes to prevent herniation. In the 1-month study, PTMC scaffolds sealed with FibGen herniated with polyurethane membranes. When applied alone, FibGen integrated with the surrounding AF tissue without herniation, showing promise for long-term studies. The 12-month long-term study used only FibGen which showed fibrous healing, biomaterial resorption and no obvious hydrogel-related complications. However, the 2 mm biopsy punch injury condition also exhibited fibrotic healing at 12 months. Both untreated and FibGen treated groups showed equivalency with no detectable differences in histological grades of proteoglycans, cellular morphology, IVD structure and blood vessel formation, biomechanical properties including torque range and axial range of motion, Pfirrmann grade, IVD height, and quantitative scores of vertebral body changes from clinical computed tomography. The biopsy-type injury caused endplate defects with a high prevalence of osteophytes in all groups and no nucleus herniation, indicating that the biopsy-type injury requires further refinement, such as reduction to a slit-type defect that could penetrate the full depth of the AF without damaging the endplate. Results demonstrate translational feasibility of FibGen for AF repair to seal AF defects, although future study with a more refined injury model is required to validate the efficacy of FibGen before translation.
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Affiliation(s)
- Rose G. Long
- Department of GeneticsHarvard Medical SchoolBostonMassachusetts
| | | | - Lorin M. Benneker
- Department for Orthopaedic Surgery, Spine Unit, InselspitalUniversity Hospital of BernBernSwitzerland
| | - Daisuke Sakai
- Department of Orthopaedic SurgeryTokai University School of MedicineKanagawaJapan
| | - Zhen Li
- AO Research Institute DavosDavos PlatzSwitzerland
| | - Abhay Pandit
- CÚRAM, Center for Research in Medical DevicesNational University of IrelandGalwayIreland
| | - Dirk W. Grijpma
- University of Twente, Technical Medical CentreDepartment of Biomaterials Science and TechnologyFaculty of Science and TechnologyEnschedeThe Netherlands
| | - David Eglin
- AO Research Institute DavosDavos PlatzSwitzerland
| | | | - Tanja Schmid
- AO Research Institute DavosDavos PlatzSwitzerland
| | | | | | | | - Mauro Alini
- AO Research Institute DavosDavos PlatzSwitzerland
| | - James C. Iatridis
- Leni & Peter W. May Department of OrthopaedicsIcahn School of Medicine at Mount SinaiNew YorkNew York
| | - Sibylle Grad
- AO Research Institute DavosDavos PlatzSwitzerland
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15
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Tissue Engineering Strategies for Intervertebral Disc Treatment Using Functional Polymers. Polymers (Basel) 2019; 11:polym11050872. [PMID: 31086085 PMCID: PMC6572548 DOI: 10.3390/polym11050872] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 04/24/2019] [Accepted: 05/02/2019] [Indexed: 02/07/2023] Open
Abstract
Intervertebral disc (IVD) is the fibrocartilage between the vertebrae, allowing the spine to move steadily by bearing multidirectional complex loads. Aging or injury usually causes degeneration of IVD, which is one of the main reasons for low back pain prevalent worldwide and reduced quality of life. While various treatment strategies for degenerative IVD have been studied using in vitro studies, animal experiments, and clinical trials, there are unsolved limitations for endogenous regeneration of degenerative IVD. In this respect, several tissue engineering strategies that are based on the cell and scaffolds have been extensively researched with positive outcomes for regeneration of IVD tissues. Scaffolds made of functional polymers and their diverse forms mimicking the macro- and micro-structure of native IVD enhance the biological and mechanical properties of the scaffolds for IVD regeneration. In this review, we discuss diverse morphological and functional polymers and tissue engineering strategies for endogenous regeneration of degenerative IVD. Tissue engineering strategies using functional polymers are promising therapeutics for fundamental and endogenous regeneration of degenerative IVD.
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16
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Van den Broeck L, Piluso S, Soultan AH, De Volder M, Patterson J. Cytocompatible carbon nanotube reinforced polyethylene glycol composite hydrogels for tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 98:1133-1144. [DOI: 10.1016/j.msec.2019.01.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 12/01/2018] [Accepted: 01/07/2019] [Indexed: 12/11/2022]
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17
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Isa ILM, Günay B, Joyce K, Pandit A. Tissue Engineering: Biomaterials for Disc Repair. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s40610-018-0106-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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18
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Martins DE, Medeiros VPD, Wajchenberg M, Paredes-Gamero EJ, Lima M, Reginato RD, Nader HB, Puertas EB, Faloppa F. Changes in human intervertebral disc biochemical composition and bony end plates between middle and old age. PLoS One 2018; 13:e0203932. [PMID: 30226874 PMCID: PMC6144914 DOI: 10.1371/journal.pone.0203932] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 08/30/2018] [Indexed: 12/22/2022] Open
Abstract
Objective This study evaluates molecular, nutritional and biochemical alterations in
human intervertebral discs between middle and old age. Methods Twenty-eight human lumbar intervertebral discs from donors were evaluated and
separated into two groups: Middle-aged (35–50 years old, relatively
non-degenerate discs of Pfirrmann grades 1–3, n = 15) and Old-aged (≥80
years old, all degenerate Pfirrmann grade 4 or 5, n = 13). Parameters which
might be expected to to be related to nutrient supply and so the health of
disc cells (eg the porosity of the vertebral endplate, cell viability and
cell density) and to disc extracellular composition (ie quantification of
glycosaminoglycan disaccharides and hyaluronic acid molecular weight) and
collagen organization, were analyzed. Three regions of the intervertebral
disc (anterior annulus fibrosus, nucleus pulposus, and posterior annulus
fibrosus) were examined. Results The old-aged group showed a decrease in content of sulphated and
non-sulphated glycosaminoglycans relative to middle-aged and there were also
alterations in the proportion of GAG disaccharides and a decrease of
collagen fiber size. Hyaluronic acid molecular weight was around 200 kDa in
all regions and ages studied. The anterior annulus differed from the
posterior annulus particularly in relation to cell density and GAG content.
Additionally, there were changes in the bony endplate, with fewer openings
observed in the caudal than cranial endplates of all discs in both
groups. Conclusions Results show the cranial vertebral endplate is the main vascular source for
the intervertebral discs. Hylauronic acid molecular weight is the same
through the intervertebral disc after age of 50 years.
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Affiliation(s)
- Delio Eulalio Martins
- Department of Orthopaedics and Traumatology, Universidade Federal de Sao Paulo-UNIFESP, Sao Paulo, SP, Brazil
| | - Valquiria Pereira de Medeiros
- Department of Biochemistry, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brazil.,Faculty of Pharmaceutical Science, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Marcelo Wajchenberg
- Department of Orthopaedics and Traumatology, Universidade Federal de Sao Paulo-UNIFESP, Sao Paulo, SP, Brazil
| | - Edgar Julian Paredes-Gamero
- Faculty of Pharmaceutical Science, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil.,Department of Biochemistry, Universidade Federal de Sao Paulo-UNIFESP, Sao Paulo, SP, Brazil
| | - Marcelo Lima
- Department of Biochemistry, Universidade Federal de Sao Paulo-UNIFESP, Sao Paulo, SP, Brazil
| | - Rejane Daniele Reginato
- Department of Morphology and Genetics, Universidade Federal de Sao Paulo-UNIFESP, Sao Paulo, SP, Brazil
| | - Helena Bonciani Nader
- Department of Biochemistry, Universidade Federal de Sao Paulo-UNIFESP, Sao Paulo, SP, Brazil
| | - Eduardo Barros Puertas
- Department of Orthopaedics and Traumatology, Universidade Federal de Sao Paulo-UNIFESP, Sao Paulo, SP, Brazil
| | - Flavio Faloppa
- Department of Orthopaedics and Traumatology, Universidade Federal de Sao Paulo-UNIFESP, Sao Paulo, SP, Brazil
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19
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Mohd Isa IL, Abbah SA, Kilcoyne M, Sakai D, Dockery P, Finn DP, Pandit A. Implantation of hyaluronic acid hydrogel prevents the pain phenotype in a rat model of intervertebral disc injury. SCIENCE ADVANCES 2018; 4:eaaq0597. [PMID: 29632893 PMCID: PMC5884685 DOI: 10.1126/sciadv.aaq0597] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 02/15/2018] [Indexed: 05/13/2023]
Abstract
Painful intervertebral disc degeneration is mediated by inflammation that modulates glycosylation and induces hyperinnervation and sensory sensitization, which result in discogenic pain. Hyaluronic acid (HA) used as a therapeutic biomaterial can reduce inflammation and pain, but the effects of HA therapy on glycosylation and pain associated with disc degeneration have not been previously determined. We describe a novel rat model of pain induced by intervertebral disc injury, with validation of the pain phenotype by morphine treatment. Using this model, we assessed the efficacy of HA hydrogel for the alleviation of pain, demonstrating that it reduced nociceptive behavior, an effect associated with down-regulation of nociception markers and inhibition of hyperinnervation. Furthermore, HA hydrogel altered glycosylation and modulated key inflammatory and regulatory signaling pathways, resulting in attenuation of inflammation and regulation of matrix components. Our results suggest that HA hydrogel is a promising clinical candidate for the treatment of back pain caused by degenerated discs.
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Affiliation(s)
- Isma Liza Mohd Isa
- Centre for Research in Medical Devices, National University of Ireland, Galway, Ireland
- Department of Anatomy, National University of Ireland, Galway, Ireland
| | - Sunny A. Abbah
- Centre for Research in Medical Devices, National University of Ireland, Galway, Ireland
| | - Michelle Kilcoyne
- Centre for Research in Medical Devices, National University of Ireland, Galway, Ireland
- Carbohydrate Signalling Group, Discipline of Microbiology, National University of Ireland, Galway, Ireland
| | - Daisuke Sakai
- Department of Orthopedic Surgery, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Peter Dockery
- Centre for Research in Medical Devices, National University of Ireland, Galway, Ireland
- Department of Anatomy, National University of Ireland, Galway, Ireland
- Centre for Microscopy and Imaging, National University of Ireland, Galway, Ireland
| | - David P. Finn
- Centre for Research in Medical Devices, National University of Ireland, Galway, Ireland
- Department of Pharmacology and Therapeutics, Galway Neuroscience Centre and Centre for Pain Research, National University of Ireland, Galway, Ireland
| | - Abhay Pandit
- Centre for Research in Medical Devices, National University of Ireland, Galway, Ireland
- Corresponding author.
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20
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Russo M, Grimaldi AM, Bevilacqua P, Tammaro O, Netti PA, Torino E. PEGylated crosslinked hyaluronic acid nanoparticles designed through a microfluidic platform for nanomedicine. Nanomedicine (Lond) 2017; 12:2211-2222. [DOI: 10.2217/nnm-2017-0103] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Aim: A high versatile microfluidic platform is proposed to design, in a one-step strategy, PEGylated crosslinked hyaluronic acid nanoparticles (cHANPs) entrapping a magnetic resonance imaging contrast agent and a dye for multimodal imaging applications. Materials & methods: Clinically relevant biomaterials were shaped in the form of spherical NPs through a microfluidic flow focusing approach. A comparison between post processing and simultaneous PEGylation is reported to evaluate the potentiality of the chemical decoration of the cHANPs in microfluidics. Results: An accurate control of the NPs in terms of size, PEGylation and loading was obtained. Furthermore, in vitro cell viability is reported and their ability to boost the magnetic resonance imaging signal is also confirmed. Conclusion: The proposed microfluidic approach reveals its ability to overcome several limitations of the traditional processes and to become an easy-to-use platform for theranostic applications.
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Affiliation(s)
- Maria Russo
- Center for Advanced Biomaterials for Health Care, Istituto Italiano di Tecnologia, IIT@CRIB, Largo Barsanti e Matteucci, 80125 Naples, Italy
- Department of Chemical Engineering, Materials & Industrial Production, University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy
| | - Anna Maria Grimaldi
- IRCCS Fondazione SDN, Istituto di Ricerca Diagnostica e Nucleare, 80143 Naples, Italy
| | - Paolo Bevilacqua
- IRCCS Fondazione SDN, Istituto di Ricerca Diagnostica e Nucleare, 80143 Naples, Italy
| | - Olimpia Tammaro
- Center for Advanced Biomaterials for Health Care, Istituto Italiano di Tecnologia, IIT@CRIB, Largo Barsanti e Matteucci, 80125 Naples, Italy
- Department of Chemical Engineering, Materials & Industrial Production, University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy
| | - Paolo Antonio Netti
- Center for Advanced Biomaterials for Health Care, Istituto Italiano di Tecnologia, IIT@CRIB, Largo Barsanti e Matteucci, 80125 Naples, Italy
- Department of Chemical Engineering, Materials & Industrial Production, University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy
| | - Enza Torino
- Center for Advanced Biomaterials for Health Care, Istituto Italiano di Tecnologia, IIT@CRIB, Largo Barsanti e Matteucci, 80125 Naples, Italy
- Department of Chemical Engineering, Materials & Industrial Production, University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy
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21
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Wang H, Cheng F, He W, Zhu J, Cheng G, Qu J. Poly(ethylene) glycol hydrogel based on oxa-Michael reaction: Precursor synthesis and hydrogel formation. Biointerphases 2017; 12:02C414. [PMID: 28571325 PMCID: PMC5453855 DOI: 10.1116/1.4984305] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/10/2017] [Accepted: 05/16/2017] [Indexed: 01/16/2023] Open
Abstract
This paper reported a facile strategy for the one-pot synthesis of vinyl sulfone (VS) group terminated hydrogel precursors [poly(ethylene) glycol (PEG)-VS] and PEG hydrogels via catalytic oxa-Michael reaction. Nine potential catalysts were investigated for the reaction between PEG and divinyl sulfone, among which 4-dimethylaminopyridine (DMAP) prevailed for its high catalytic activity. DMAP produced PEG-VS with a conversion of more than 90% in 2 h under a solvent-free condition at room temperature, which significantly simplifies the synthesis of PEG-VS. The preparation of PEG hydrogels was realized by adding glycerol as a crosslinker, and the physical and the mechanical properties were easily controlled by changing the crosslinker concentration as well as the PEG chain length. This strategy can also be applied to other polyhydroxy compounds as crosslinkers, and thus, a library of hydrogels with designed structures and desired properties could be prepared. The PEG hydrogels showed good antifouling properties, low cytotoxicity, and ability to release drugs at a tunable rate, indicating versatile potential bioapplications.
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Affiliation(s)
- Hanqi Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116023, China and School of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian, Liaoning 116023, China
| | - Fang Cheng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116023, China and School of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian, Liaoning 116023, China
| | - Wei He
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116023, China and Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116023, China
| | - Jiaohui Zhu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116023, China and School of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian, Liaoning 116023, China
| | - Gang Cheng
- Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116023, China
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22
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Monaghan MG, Holeiter M, Brauchle E, Layland SL, Lu Y, Deb A, Pandit A, Nsair A, Schenke-Layland K. Exogenous miR-29B Delivery Through a Hyaluronan-Based Injectable System Yields Functional Maintenance of the Infarcted Myocardium. Tissue Eng Part A 2017; 24:57-67. [PMID: 28463641 PMCID: PMC5770094 DOI: 10.1089/ten.tea.2016.0527] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Myocardial infarction (MI) results in debilitating remodeling of the myocardial extracellular matrix (ECM). In this proof-of-principle study it was sought to modulate this aggressive remodeling by injecting a hyaluronic acid-based reservoir delivering exogenous microRNA-29B (miR-29B). This proof-of-principal study was executed whereby myocardial ischemia/reperfusion was performed on C57BL/6 mice for 45 min after which five 10 μL boluses of a hydrogel composed of thiolated hyaluronic acid cross-linked with poly (ethylene glycol) diacrylate, containing exogenous miR-29B as an active therapy, were injected into the border zone of the infarcted myocardium. Following surgery, the myocardial function of the animals was monitored up to 5 weeks. Delivering miR-29B locally using an injectable hyaluronan-based hydrogel resulted in the maintenance of myocardial function at 2 and 5 weeks following MI in this proof-of-principle study. In addition, while animals treated with the control of a nontargeting miR delivered using the hyaluronan-based hydrogel had a significant deterioration of myocardial function, those treated with miR-29B did not. Histological analysis revealed a significantly decreased presence of elastin and significantly less immature/newly deposited collagen fibers at the border zone of the infarct. Increased vascularity of the myocardial scar was also detected and Raman microspectroscopy discovered significantly altered ECM-specific biochemical signals at the border zone of the infarct. This preclinical proof-of-principle study demonstrates that an injectable hyaluronic acid hydrogel system could be capable of delivering miR-29B toward maintaining cardiac function following MI. In addition, Raman microspectroscopy revealed subtle, yet significant changes in ECM organization and maturity. These findings have great potential with regard to using injectable biomaterials as a local treatment for ischemic tissue and exogenous miRs to modulate tissue remodeling.
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Affiliation(s)
- Michael G Monaghan
- 1 Department of Women's Health, Research Institute for Women's Health, Eberhard Karls University , Tübingen, Germany .,2 Department of Cell and Tissue Engineering, Fraunhofer Institute for Interfacial Engineering and Biotechnology (IGB) , Stuttgart, Germany .,3 Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, the University of Dublin , Dublin, Ireland
| | - Monika Holeiter
- 1 Department of Women's Health, Research Institute for Women's Health, Eberhard Karls University , Tübingen, Germany .,2 Department of Cell and Tissue Engineering, Fraunhofer Institute for Interfacial Engineering and Biotechnology (IGB) , Stuttgart, Germany
| | - Eva Brauchle
- 1 Department of Women's Health, Research Institute for Women's Health, Eberhard Karls University , Tübingen, Germany .,2 Department of Cell and Tissue Engineering, Fraunhofer Institute for Interfacial Engineering and Biotechnology (IGB) , Stuttgart, Germany
| | - Shannon L Layland
- 1 Department of Women's Health, Research Institute for Women's Health, Eberhard Karls University , Tübingen, Germany .,2 Department of Cell and Tissue Engineering, Fraunhofer Institute for Interfacial Engineering and Biotechnology (IGB) , Stuttgart, Germany
| | - Yan Lu
- 4 Department of Medicine/Cardiology, Cardiovascular Research Laboratories (CVRL), University of California (UCLA) , Los Angeles, California
| | - Arjun Deb
- 4 Department of Medicine/Cardiology, Cardiovascular Research Laboratories (CVRL), University of California (UCLA) , Los Angeles, California
| | - Abhay Pandit
- 5 Centre for Research in Medical Devices (CÚRAM), National University of Ireland , Galway, Ireland
| | - Ali Nsair
- 4 Department of Medicine/Cardiology, Cardiovascular Research Laboratories (CVRL), University of California (UCLA) , Los Angeles, California
| | - Katja Schenke-Layland
- 1 Department of Women's Health, Research Institute for Women's Health, Eberhard Karls University , Tübingen, Germany .,2 Department of Cell and Tissue Engineering, Fraunhofer Institute for Interfacial Engineering and Biotechnology (IGB) , Stuttgart, Germany .,4 Department of Medicine/Cardiology, Cardiovascular Research Laboratories (CVRL), University of California (UCLA) , Los Angeles, California
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23
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Tavakoli J. Tissue Engineering of the Intervertebral Disc's Annulus Fibrosus: A Scaffold-Based Review Study. Tissue Eng Regen Med 2017; 14:81-91. [PMID: 30603465 PMCID: PMC6171584 DOI: 10.1007/s13770-017-0024-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 04/10/2016] [Accepted: 06/08/2016] [Indexed: 12/11/2022] Open
Abstract
Tissue engineering as a high technology solution for treating disc's problem has been the focus of some researches recently; however, the upcoming successful results in this area depends on understanding the complexities of biology and engineering interface. Whereas the major responsibility of the nucleus pulposus is to provide a sustainable hydrated environment within the disc, the function of the annulus fibrosus (AF) is more mechanical, facilitating joint mobility and preventing radial bulging by confining of the central part, which makes the AF reconstruction important. Although the body of knowledge regarding the AF tissue engineering has grown rapidly, the opportunities to improve current understanding of how artificial scaffolds are able to mimic the AF concentric structure-including inter-lamellar matrix and cross-bridges-addressed unresolved research questions. The aim of this literature review was to collect and discuss, from the international scientific literature, information about tissue engineering of the AF based on scaffold fabrication and material properties, useful for developing new strategies in disc tissue engineering. The key parameter of this research was understanding if role of cross-bridges and inter-lamellar matrix has been considered on tissue engineering of the AF.
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Affiliation(s)
- Javad Tavakoli
- Medical Device Research Institute, School of Computer Science, Engineering and Mathematics, Flinders University, Adelaide, SA 5042 Australia
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24
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Bowles RD, Setton LA. Biomaterials for intervertebral disc regeneration and repair. Biomaterials 2017; 129:54-67. [PMID: 28324865 DOI: 10.1016/j.biomaterials.2017.03.013] [Citation(s) in RCA: 216] [Impact Index Per Article: 30.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 03/05/2017] [Accepted: 03/10/2017] [Indexed: 12/11/2022]
Abstract
The intervertebral disc contributes to motion, weight bearing, and flexibility of the spine, but is susceptible to damage and morphological changes that contribute to pathology with age and injury. Engineering strategies that rely upon synthetic materials or composite implants that do not interface with the biological components of the disc have not met with widespread use or desirable outcomes in the treatment of intervertebral disc pathology. Here we review bioengineering advances to treat disc disorders, using cell-supplemented materials, or acellular, biologically based materials, that provide opportunity for cell-material interactions and remodeling in the treatment of intervertebral disc disorders. While a field still in early development, bioengineering-based strategies employing novel biomaterials are emerging as promising alternatives for clinical treatment of intervertebral disc disorders.
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Affiliation(s)
- Robert D Bowles
- Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA.
| | - Lori A Setton
- Department of Biomedical Engineering & Orthopedic Surgery, Washington University in St. Louis, St. Louis, MO 63130, USA.
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25
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Hussain A, Zia KM, Tabasum S, Noreen A, Ali M, Iqbal R, Zuber M. Blends and composites of exopolysaccharides; properties and applications: A review. Int J Biol Macromol 2017; 94:10-27. [DOI: 10.1016/j.ijbiomac.2016.09.104] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Revised: 09/23/2016] [Accepted: 09/29/2016] [Indexed: 01/21/2023]
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26
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Long RG, Torre OM, Hom WW, Assael DJ, Iatridis JC. Design Requirements for Annulus Fibrosus Repair: Review of Forces, Displacements, and Material Properties of the Intervertebral Disk and a Summary of Candidate Hydrogels for Repair. J Biomech Eng 2016; 138:021007. [PMID: 26720265 DOI: 10.1115/1.4032353] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Indexed: 02/02/2023]
Abstract
There is currently a lack of clinically available solutions to restore functionality to the intervertebral disk (IVD) following herniation injury to the annulus fibrosus (AF). Microdiscectomy is a commonly performed surgical procedure to alleviate pain caused by herniation; however, AF defects remain and can lead to accelerated degeneration and painful conditions. Currently available AF closure techniques do not restore mechanical functionality or promote tissue regeneration, and have risk of reherniation. This review determined quantitative design requirements for AF repair materials and summarized currently available hydrogels capable of meeting these design requirements by using a series of systematic PubMed database searches to yield 1500+ papers that were screened and analyzed for relevance to human lumbar in vivo measurements, motion segment behaviors, and tissue level properties. We propose a testing paradigm involving screening tests as well as more involved in situ and in vivo validation tests to efficiently identify promising biomaterials for AF repair. We suggest that successful materials must have high adhesion strength (∼0.2 MPa), match as many AF material properties as possible (e.g., approximately 1 MPa, 0. 3 MPa, and 30 MPa for compressive, shear, and tensile moduli, respectively), and have high tensile failure strain (∼65%) to advance to in situ and in vivo validation tests. While many biomaterials exist for AF repair, few undergo extensive mechanical characterization. A few hydrogels show promise for AF repair since they can match at least one material property of the AF while also adhering to AF tissue and are capable of easy implantation during surgical procedures to warrant additional optimization and validation.
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27
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Abbadessa A, Mouser VHM, Blokzijl MM, Gawlitta D, Dhert WJA, Hennink WE, Malda J, Vermonden T. A Synthetic Thermosensitive Hydrogel for Cartilage Bioprinting and Its Biofunctionalization with Polysaccharides. Biomacromolecules 2016; 17:2137-2147. [PMID: 27171342 PMCID: PMC4931898 DOI: 10.1021/acs.biomac.6b00366] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hydrogels based on triblock copolymers of polyethylene glycol and partially methacrylated poly[N-(2-hydroxypropyl) methacrylamide mono/dilactate] make up an attractive class of biomaterials because of their biodegradability, cytocompatibility, and tunable thermoresponsive and mechanical properties. If these properties are fine-tuned, the hydrogels can be three-dimensionally bioprinted, to generate, for instance, constructs for cartilage repair. This study investigated whether hydrogels based on the polymer mentioned above with a 10% degree of methacrylation (M10P10) support cartilage formation by chondrocytes and whether the incorporation of methacrylated chondroitin sulfate (CSMA) or methacrylated hyaluronic acid (HAMA) can improve the mechanical properties, long-term stability, and printability. Chondrocyte-laden M10P10 hydrogels were cultured for 42 days to evaluate chondrogenesis. M10P10 hydrogels with or without polysaccharides were evaluated for their mechanical properties (before and after UV photo-cross-linking), degradation kinetics, and printability. Extensive cartilage matrix production occurred in M10P10 hydrogels, highlighting their potential for cartilage repair strategies. The incorporation of polysaccharides increased the storage modulus of polymer mixtures and decreased the degradation kinetics in cross-linked hydrogels. Addition of HAMA to M10P10 hydrogels improved printability and resulted in three-dimensional constructs with excellent cell viability. Hence, this novel combination of M10P10 with HAMA forms an interesting class of hydrogels for cartilage bioprinting.
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Affiliation(s)
- Anna Abbadessa
- Department of Pharmaceutics, Utrecht Institute for
Pharmaceutical Sciences (UIPS), Faculty of Science, Utrecht University, P.O. Box
80082, 3508 TB Utrecht, The Netherlands
| | - Vivian H. M. Mouser
- Department of Orthopaedics, University Medical Center
Utrecht, P.O. Box 85500, 3508 GA Utrecht, The Netherlands
| | - Maarten M. Blokzijl
- Department of Pharmaceutics, Utrecht Institute for
Pharmaceutical Sciences (UIPS), Faculty of Science, Utrecht University, P.O. Box
80082, 3508 TB Utrecht, The Netherlands
- Department of Orthopaedics, University Medical Center
Utrecht, P.O. Box 85500, 3508 GA Utrecht, The Netherlands
| | - Debby Gawlitta
- Department of Oral and Maxillofacial Surgery & Special
Dental Care, University Medical Center Utrecht, P.O. Box 85500, 3508 GA Utrecht, The
Netherlands
| | - Wouter J. A. Dhert
- Department of Orthopaedics, University Medical Center
Utrecht, P.O. Box 85500, 3508 GA Utrecht, The Netherlands
- Department of Equine Sciences, Faculty of Veterinary
Medicine, Utrecht University, P.O. Box 80163, 3508 TD Utrecht, The Netherlands
| | - Wim E. Hennink
- Department of Pharmaceutics, Utrecht Institute for
Pharmaceutical Sciences (UIPS), Faculty of Science, Utrecht University, P.O. Box
80082, 3508 TB Utrecht, The Netherlands
| | - Jos Malda
- Department of Orthopaedics, University Medical Center
Utrecht, P.O. Box 85500, 3508 GA Utrecht, The Netherlands
- Department of Equine Sciences, Faculty of Veterinary
Medicine, Utrecht University, P.O. Box 80163, 3508 TD Utrecht, The Netherlands
| | - Tina Vermonden
- Department of Pharmaceutics, Utrecht Institute for
Pharmaceutical Sciences (UIPS), Faculty of Science, Utrecht University, P.O. Box
80082, 3508 TB Utrecht, The Netherlands
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28
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Effect of perfluorotributylamine-enriched alginate on nucleus pulposus cell: Implications for intervertebral disc regeneration. Biomaterials 2015; 82:34-47. [PMID: 26741882 DOI: 10.1016/j.biomaterials.2015.12.013] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 12/13/2015] [Indexed: 12/30/2022]
Abstract
Various scaffolds have been attempted for intervertebral disc regeneration, but their effectiveness was limited by loss of nutrients within the scaffolds. It has been suggested that the disc is not severely hypoxic and limited availability of oxygen results in disc degeneration. Therefore, a certain oxygen level might be beneficial for disc regeneration, which has not been given enough attention in previous studies. Here, we used perfluorotributylamine (PFTBA) for the first time as an oxygen regulator in alginate scaffold for disc regeneration in vitro and in vivo. We found that the characteristics of alginate were not affected by PFTBA and the oxygen level of the scaffold was regulated. Then, human nucleus pulposus (NP) cells were cultured in the PFTBA-enriched alginates. It was found that PFTBA could promote NP cell survival and proliferation. In addition, 2.5% PFTBA was capable of regulating extracellular matrix (ECM) to a disc-like tissue graft with little effect on the expression of NP cell markers. Finally, 2.5% PFTBA-enriched alginate was found to restore the disc height and the ECM in a mouse disc degeneration model, indicating its beneficial effect on alleviating disc degeneration. These findings highlight the promising application of PFTBA in further intervertebral disc regeneration.
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29
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Nam KH, Smith AST, Lone S, Kwon S, Kim DH. Biomimetic 3D Tissue Models for Advanced High-Throughput Drug Screening. ACTA ACUST UNITED AC 2014; 20:201-15. [PMID: 25385716 DOI: 10.1177/2211068214557813] [Citation(s) in RCA: 106] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Indexed: 12/13/2022]
Abstract
Most current drug screening assays used to identify new drug candidates are 2D cell-based systems, even though such in vitro assays do not adequately re-create the in vivo complexity of 3D tissues. Inadequate representation of the human tissue environment during a preclinical test can result in inaccurate predictions of compound effects on overall tissue functionality. Screening for compound efficacy by focusing on a single pathway or protein target, coupled with difficulties in maintaining long-term 2D monolayers, can serve to exacerbate these issues when using such simplistic model systems for physiological drug screening applications. Numerous studies have shown that cell responses to drugs in 3D culture are improved from those in 2D, with respect to modeling in vivo tissue functionality, which highlights the advantages of using 3D-based models for preclinical drug screens. In this review, we discuss the development of microengineered 3D tissue models that accurately mimic the physiological properties of native tissue samples and highlight the advantages of using such 3D microtissue models over conventional cell-based assays for future drug screening applications. We also discuss biomimetic 3D environments, based on engineered tissues as potential preclinical models for the development of more predictive drug screening assays for specific disease models.
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Affiliation(s)
- Ki-Hwan Nam
- Department of Bioengineering, University of Washington, Seattle, WA, USA Department of Electrical and Computer Engineering, Seoul National University, Seoul, Republic of Korea Center for Analytical Instrumentation Development, The Korea Basic Science Institute, Deajeon, Republic of Korea
| | - Alec S T Smith
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Saifullah Lone
- Department of Electrical and Computer Engineering, Seoul National University, Seoul, Republic of Korea
| | - Sunghoon Kwon
- Department of Electrical and Computer Engineering, Seoul National University, Seoul, Republic of Korea
| | - Deok-Ho Kim
- Department of Bioengineering, University of Washington, Seattle, WA, USA Center for Cardiovascular Biology, University of Washington, Seattle, WA, USA Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, USA
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