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Brown NE, Ellerbe LR, Hollister SJ, Temenoff JS. Development and Characterization of Heparin-Containing Hydrogel/3D-Printed Scaffold Composites for Craniofacial Reconstruction. Ann Biomed Eng 2024; 52:2287-2307. [PMID: 38734845 DOI: 10.1007/s10439-024-03530-z] [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: 01/11/2024] [Accepted: 04/29/2024] [Indexed: 05/13/2024]
Abstract
Regeneration of cartilage and bone tissues remains challenging in tissue engineering due to their complex structures, and the need for both mechanical support and delivery of biological repair stimuli. Therefore, the goal of this study was to develop a composite scaffold platform for anatomic chondral and osteochondral repair using heparin-based hydrogels to deliver small molecules within 3D-printed porous scaffolds that provide structure, stiffness, and controlled biologic delivery. We designed a mold-injection system to combine hydrolytically degradable hydrogels and 3D-printed scaffolds that could be employed rapidly (< 30 min) in operating room settings (~23 °C). Micro-CT analysis demonstrated the effectiveness of our injection system through homogeneously distributed hydrogel within the pores of the scaffolds. Hydrogels and composite scaffolds exhibited efficient loading (~94%) of a small positively charged heparin-binding molecule (crystal violet) with sustained release over 14 days and showed high viability of encapsulated porcine chondrocytes over 7 days. Compression testing demonstrated nonlinear viscoelastic behavior where tangent stiffness decreased with scaffold porosity (porous scaffold tangent stiffness: 70%: 4.9 MPa, 80%: 1.5 MPa, and 90%: 0.20 MPa) but relaxation was not affected. Lower-porosity scaffolds (70%) showed stiffness similar to lower ranges of trabecular bone (4-8 MPa) while higher-porosity scaffolds (80% and 90%) showed stiffness similar to auricular cartilage (0.16-2 MPa). Ultimately, this rapid composite scaffold fabrication method may be employed in the operating room and utilized to control biologic delivery within load-bearing scaffolds.
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Affiliation(s)
- Nettie E Brown
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Tech and Emory University, 313 Ferst Dr, Atlanta, GA, 30332, USA
| | - Lela R Ellerbe
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Tech and Emory University, 313 Ferst Dr, Atlanta, GA, 30332, USA
| | - Scott J Hollister
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Tech and Emory University, 313 Ferst Dr, Atlanta, GA, 30332, USA.
| | - Johnna S Temenoff
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Tech and Emory University, 313 Ferst Dr, Atlanta, GA, 30332, USA.
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Dr, Atlanta, GA, 30332, USA.
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Lee W, Shin MJ, Kim S, Lee CE, Choi J, Koo HJ, Choi MJ, Kim JH, Kim K. Injectable composite hydrogels embedded with gallium-based liquid metal particles for solid breast cancer treatment via chemo-photothermal combination. Acta Biomater 2024; 180:140-153. [PMID: 38604467 DOI: 10.1016/j.actbio.2024.04.011] [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: 12/22/2023] [Revised: 03/20/2024] [Accepted: 04/07/2024] [Indexed: 04/13/2024]
Abstract
Photothermal therapy (PTT) holds great promise as a cancer treatment modality by generating localized heat at the tumor site. Among various photothermal agents, gallium-based liquid metal (LM) has been widely used as a new photothermal-inducible metallic compound due to its structural transformability. To overcome limitations of random aggregation and dissipation of administrated LM particles into a human body, we developed LM-containing injectable composite hydrogel platforms capable of achieving spatiotemporal PTT and chemotherapy. Eutectic gallium-indium LM particles were first stabilized with 1,2-Distearoyl-sn‑glycero-3-phosphoethanolamine (DSPE) lipids. They were then incorporated into an interpenetrating hydrogel network composed of thiolated gelatin conjugated with 6-mercaptopurine (MP) chemodrug and poly(ethylene glycol)-diacrylate. The resulted composite hydrogel exhibited sufficient capability to induce MDA-MB-231 breast cancer cell death through a multi-step mechanism: (1) hyperthermic cancer cell death due to temperature elevation by near-infrared laser irradiation via LM particles, (2) leakage of glutathione (GSH) and cleavage of disulfide bonds due to destruction of cancer cells. As a consequence, additional chemotherapy was facilitated by GSH, leading to accelerated release of MP within the tumor microenvironment. The effectiveness of our composite hydrogel system was evaluated both in vitro and in vivo, demonstrating significant tumor suppression and killing. These results demonstrate the potential of this injectable composite hydrogel for spatiotemporal cancer treatment. In conclusion, integration of PTT and chemotherapy within our hydrogel platform offers enhanced therapeutic efficacy, suggesting promising prospects for future clinical applications. STATEMENT OF SIGNIFICANCE: Our research pioneers a breakthrough in cancer treatments by developing an injectable hydrogel platform incorporating liquid metal (LM) particle-mediated photothermal therapy and 6-mercaptopurine (MP)-based chemotherapy. The combination of gallium-based LM and MP achieves synergistic anticancer effects, and our injectable composite hydrogel acts as a localized reservoir for specific delivery of both therapeutic agents. This platform induces a multi-step anticancer mechanism, combining NIR-mediated hyperthermic tumor death and drug release triggered by released glutathione from damaged cancer populations. The synergistic efficacy validated in vitro and in vivo studies highlights significant tumor suppression. This injectable composite hydrogel with synergistic therapeutic efficacy holds immense promise for biomaterial-mediated spatiotemporal treatment of solid tumors, offering a potent targeted therapy for triple negative breast cancers.
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Affiliation(s)
- Wonjeong Lee
- Department of Chemical & Biochemical Engineering, Dongguk University, Seoul 04620, Republic of Korea
| | - Min Joo Shin
- Department of Physiology, School of Medicine, Pusan National University, Yangsan 50612, Republic of Korea
| | - Sungjun Kim
- Department of Chemical & Biochemical Engineering, Dongguk University, Seoul 04620, Republic of Korea
| | - Chae Eun Lee
- Department of Chemical & Biochemical Engineering, Dongguk University, Seoul 04620, Republic of Korea
| | - Jonghoon Choi
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Hyung-Jun Koo
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
| | - Min-Jae Choi
- Department of Chemical & Biochemical Engineering, Dongguk University, Seoul 04620, Republic of Korea
| | - Jae Ho Kim
- Department of Physiology, School of Medicine, Pusan National University, Yangsan 50612, Republic of Korea.
| | - Kyobum Kim
- Department of Chemical & Biochemical Engineering, Dongguk University, Seoul 04620, Republic of Korea.
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Wang M, Wu Y, Li G, Lin Q, Zhang W, Liu H, Su J. Articular cartilage repair biomaterials: strategies and applications. Mater Today Bio 2024; 24:100948. [PMID: 38269053 PMCID: PMC10806349 DOI: 10.1016/j.mtbio.2024.100948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 12/09/2023] [Accepted: 01/03/2024] [Indexed: 01/26/2024] Open
Abstract
Articular cartilage injury is a frequent worldwide disease, while effective treatment is urgently needed. Due to lack of blood vessels and nerves, the ability of cartilage to self-repair is limited. Despite the availability of various clinical treatments, unfavorable prognoses and complications remain prevalent. However, the advent of tissue engineering and regenerative medicine has generated considerable interests in using biomaterials for articular cartilage repair. Nevertheless, there remains a notable scarcity of comprehensive reviews that provide an in-depth exploration of the various strategies and applications. Herein, we present an overview of the primary biomaterials and bioactive substances from the tissue engineering perspective to repair articular cartilage. The strategies include regeneration, substitution, and immunization. We comprehensively delineate the influence of mechanically supportive scaffolds on cellular behavior, shedding light on emerging scaffold technologies, including stimuli-responsive smart scaffolds, 3D-printed scaffolds, and cartilage bionic scaffolds. Biologically active substances, including bioactive factors, stem cells, extracellular vesicles (EVs), and cartilage organoids, are elucidated for their roles in regulating the activity of chondrocytes. Furthermore, the composite bioactive scaffolds produced industrially to put into clinical use, are also explicitly presented. This review offers innovative solutions for treating articular cartilage ailments and emphasizes the potential of biomaterials for articular cartilage repair in clinical translation.
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Affiliation(s)
- Mingkai Wang
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China
- Organoid Research Center, Shanghai University, Shanghai, 200444, China
- College of Medicine, Shanghai University, Shanghai, 200444, China
| | - Yan Wu
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China
- Organoid Research Center, Shanghai University, Shanghai, 200444, China
| | - Guangfeng Li
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China
- Organoid Research Center, Shanghai University, Shanghai, 200444, China
- College of Medicine, Shanghai University, Shanghai, 200444, China
- Department of Orthopedics Trauma, Shanghai Zhongye Hospital, Shanghai, 200941, China
| | - Qiushui Lin
- Department of Spine Surgery, The First Affiliated Hospital of Naval Medical University, Shanghai, 200433, China
| | - Wencai Zhang
- Department of Orthopedics, The First Affiliated Hospital Jinan University, Guangzhou, 510632, China
| | - Han Liu
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China
- Organoid Research Center, Shanghai University, Shanghai, 200444, China
| | - Jiacan Su
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China
- Organoid Research Center, Shanghai University, Shanghai, 200444, China
- Department of Orthopedics, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China
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Ghandforoushan P, Alehosseini M, Golafshan N, Castilho M, Dolatshahi-Pirouz A, Hanaee J, Davaran S, Orive G. Injectable hydrogels for cartilage and bone tissue regeneration: A review. Int J Biol Macromol 2023; 246:125674. [PMID: 37406921 DOI: 10.1016/j.ijbiomac.2023.125674] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/29/2023] [Accepted: 07/01/2023] [Indexed: 07/07/2023]
Abstract
Annually, millions of patients suffer from irreversible injury owing to the loss or failure of an organ or tissue caused by accident, aging, or disease. The combination of injectable hydrogels and the science of stem cells have emerged to address this persistent issue in society by generating minimally invasive treatments to augment tissue function. Hydrogels are composed of a cross-linked network of polymers that exhibit a high-water retention capacity, thereby mimicking the wet environment of native cells. Due to their inherent mechanical softness, hydrogels can be used as needle-injectable stem cell carrier materials to mend tissue defects. Hydrogels are made of different natural or synthetic polymers, displaying a broad portfolio of eligible properties, which include biocompatibility, low cytotoxicity, shear-thinning properties as well as tunable biological and physicochemical properties. Presently, novel ongoing developments and native-like hydrogels are increasingly being used broadly to improve the quality of life of those with disabling tissue-related diseases. The present review outlines various future and in-vitro applications of injectable hydrogel-based biomaterials, focusing on the newest ongoing developments of in-situ forming injectable hydrogels for bone and cartilage tissue engineering purposes.
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Affiliation(s)
- Parisa Ghandforoushan
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, Iran; Clinical Research Development, Unit of Tabriz Valiasr Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Morteza Alehosseini
- Department of Health Technology, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Nasim Golafshan
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Miguel Castilho
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, the Netherlands; Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands
| | | | - Jalal Hanaee
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, Iran
| | - Soodabeh Davaran
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tabriz University of Medical Science, Tabriz, Iran
| | - Gorka Orive
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country UPV/EHU Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; Networking Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz, Spain; Bioaraba, NanoBioCel Research Group, Vitoria-Gasteiz, Spain; University Institute for Regenerative Medicine and Oral Implantology - UIRMI (UPV/EHU-Fundación Eduardo Anitua), Vitoria, Spain; University of the Basque Country, Spain.
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Yao H, Wang C, Zhang Y, Wan Y, Min Q. Manufacture of Bilayered Composite Hydrogels with Strong, Elastic, and Tough Properties for Osteochondral Repair Applications. Biomimetics (Basel) 2023; 8:biomimetics8020203. [PMID: 37218789 DOI: 10.3390/biomimetics8020203] [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: 03/20/2023] [Revised: 04/29/2023] [Accepted: 05/05/2023] [Indexed: 05/24/2023] Open
Abstract
Layered composite hydrogels have been considered attractive materials for use in osteochondral repair and regeneration. These hydrogel materials should be mechanically strong, elastic, and tough besides fulfilling some basic requirements such as biocompatibility and biodegradability. A novel type of bilayered composite hydrogel with multi-network structures and well-defined injectability was thus developed for osteochondral tissue engineering using chitosan (CH), hyaluronic acid (HA), silk fibroin (SF), CH nanoparticles (NPs), and amino-functionalized mesoporous bioglass (ABG) NPs. CH was combined with HA and CH NPs to build the chondral phase of the bilayered hydrogel, and CH, SF, and ABG NPs were used together to construct the subchondral phase of the bilayer hydrogel. Rheological measurements showed that the optimally achieved gels assigned to the chondral and subchondral layers had their elastic moduli of around 6.5 and 9.9 kPa, respectively, with elastic modulus/viscous modulus ratios higher than 36, indicating that they behaved like strong gels. Compressive measurements further demonstrated that the bilayered hydrogel with an optimally formulated composition had strong, elastic, and tough characteristics. Cell culture revealed that the bilayered hydrogel had the capacity to support the in-growth of chondrocytes in the chondral phase and osteoblasts in the subchondral phase. Results suggest that the bilayered composite hydrogel can act as an injective biomaterial for osteochondral repair applications.
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Affiliation(s)
- Hui Yao
- School of Pharmacy, Hubei University of Science and Technology, Xianning 437100, China
- Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning 437100, China
| | - Congcong Wang
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yuchen Zhang
- School of Pharmacy, Hubei University of Science and Technology, Xianning 437100, China
- Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning 437100, China
| | - Ying Wan
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Qing Min
- School of Pharmacy, Hubei University of Science and Technology, Xianning 437100, China
- Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning 437100, China
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Wu H, Shang Y, Sun W, Ouyang X, Zhou W, Lu J, Yang S, Wei W, Yao X, Wang X, Zhang X, Chen Y, He Q, Yang Z, Ouyang H. Seamless and early gap healing of osteochondral defects by autologous mosaicplasty combined with bioactive supramolecular nanofiber-enabled gelatin methacryloyl (BSN-GelMA) hydrogel. Bioact Mater 2023; 19:88-102. [PMID: 35441114 PMCID: PMC9005961 DOI: 10.1016/j.bioactmat.2022.03.038] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 03/04/2022] [Accepted: 03/25/2022] [Indexed: 12/02/2022] Open
Abstract
Autologous mosaicplasty is a common approach used to treat osteochondral defects in clinical practice. Gap integration between host and transplanted plugs requires bone tissue reservation and hyaline cartilage regeneration without uneven surface, graft necrosis and sclerosis. However, poor gap integration is a serious concern, which eventually leads to deterioration of joint function. To deal with such complications, this study has developed a strategy to effectively enhance integration of the gap region following mosaicplasty by applying injectable bioactive supramolecular nanofiber-enabled gelatin methacryloyl (GelMA) hydrogel (BSN-GelMA). A rabbit osteochondral defect model demonstrated that BSN-GelMA achieved seamless osteochondral healing in the gap region between plugs of osteochondral defects following mosaicplasty, as early as six weeks. Moreover, the International Cartilage Repair Society score, histology score, glycosaminoglycan content, subchondral bone volume, and collagen II expression were observed to be the highest in the gap region of BSN-GelMA treated group. This improved outcome was due to bio-interactive materials, which acted as tissue fillers to bridge the gap, prevent cartilage degeneration, and promote graft survival and migration of bone marrow mesenchymal stem cells by releasing bioactive supramolecular nanofibers from the GelMA hydrogel. This study provides a powerful and applicable approach to improve gap integration after autologous mosaicplasty. It is also a promising off-the-shelf bioactive material for cell-free in situ tissue regeneration. A novel strategy that can effectively enhance post-mosaicplasty interstitial integration was developed. The bioactive supramolecular nanofibers (BSN) exhibited comparable bioactivity to insulin-like growth factor-1 (IGF-1). The BSN-GelMA hydrogel is a promising off-the-shelf bioactive material for cell-free in situ tissue regeneration.
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7
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Wang Z, Le H, Wang Y, Liu H, Li Z, Yang X, Wang C, Ding J, Chen X. Instructive cartilage regeneration modalities with advanced therapeutic implantations under abnormal conditions. Bioact Mater 2022; 11:317-338. [PMID: 34977434 PMCID: PMC8671106 DOI: 10.1016/j.bioactmat.2021.10.002] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 09/19/2021] [Accepted: 10/02/2021] [Indexed: 12/12/2022] Open
Abstract
The development of interdisciplinary biomedical engineering brings significant breakthroughs to the field of cartilage regeneration. However, cartilage defects are considerably more complicated in clinical conditions, especially when injuries occur at specific sites (e.g., osteochondral tissue, growth plate, and weight-bearing area) or under inflammatory microenvironments (e.g., osteoarthritis and rheumatoid arthritis). Therapeutic implantations, including advanced scaffolds, developed growth factors, and various cells alone or in combination currently used to treat cartilage lesions, address cartilage regeneration under abnormal conditions. This review summarizes the strategies for cartilage regeneration at particular sites and pathological microenvironment regulation and discusses the challenges and opportunities for clinical transformation.
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Affiliation(s)
- Zhonghan Wang
- Department of Plastic and Reconstruct Surgery, The First Hospital of Jilin University, 1 Xinmin Street, Changchun, 130021, PR China
- Department of Orthopedics, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
| | - Hanxiang Le
- Department of Orthopedics, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
| | - Yanbing Wang
- Department of Orthopedics, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
| | - He Liu
- Department of Orthopedics, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
| | - Zuhao Li
- Department of Orthopedics, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
| | - Xiaoyu Yang
- Department of Orthopedics, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
| | - Chenyu Wang
- Department of Plastic and Reconstruct Surgery, The First Hospital of Jilin University, 1 Xinmin Street, Changchun, 130021, PR China
| | - Jianxun Ding
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, PR China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, PR China
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Alizadeh Sardroud H, Wanlin T, Chen X, Eames BF. Cartilage Tissue Engineering Approaches Need to Assess Fibrocartilage When Hydrogel Constructs Are Mechanically Loaded. Front Bioeng Biotechnol 2022; 9:787538. [PMID: 35096790 PMCID: PMC8790514 DOI: 10.3389/fbioe.2021.787538] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 12/10/2021] [Indexed: 12/19/2022] Open
Abstract
Chondrocytes that are impregnated within hydrogel constructs sense applied mechanical force and can respond by expressing collagens, which are deposited into the extracellular matrix (ECM). The intention of most cartilage tissue engineering is to form hyaline cartilage, but if mechanical stimulation pushes the ratio of collagen type I (Col1) to collagen type II (Col2) in the ECM too high, then fibrocartilage can form instead. With a focus on Col1 and Col2 expression, the first part of this article reviews the latest studies on hyaline cartilage regeneration within hydrogel constructs that are subjected to compression forces (one of the major types of the forces within joints) in vitro. Since the mechanical loading conditions involving compression and other forces in joints are difficult to reproduce in vitro, implantation of hydrogel constructs in vivo is also reviewed, again with a focus on Col1 and Col2 production within the newly formed cartilage. Furthermore, mechanotransduction pathways that may be related to the expression of Col1 and Col2 within chondrocytes are reviewed and examined. Also, two recently-emerged, novel approaches of load-shielding and synchrotron radiation (SR)–based imaging techniques are discussed and highlighted for future applications to the regeneration of hyaline cartilage. Going forward, all cartilage tissue engineering experiments should assess thoroughly whether fibrocartilage or hyaline cartilage is formed.
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Affiliation(s)
- Hamed Alizadeh Sardroud
- Division of Biomedical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK, Canada
- *Correspondence: Hamed Alizadeh Sardroud,
| | - Tasker Wanlin
- Department of Anatomy, Physiology, and Pharmacology, University of Saskatchewan, Saskatoon, SK, Canada
| | - Xiongbiao Chen
- Division of Biomedical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK, Canada
- Department of Mechanical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK, Canada
| | - B. Frank Eames
- Division of Biomedical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK, Canada
- Department of Anatomy, Physiology, and Pharmacology, University of Saskatchewan, Saskatoon, SK, Canada
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Lee J, Lee S, Huh SJ, Kang BJ, Shin H. Directed Regeneration of Osteochondral Tissue by Hierarchical Assembly of Spatially Organized Composite Spheroids. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2103525. [PMID: 34806336 PMCID: PMC8787388 DOI: 10.1002/advs.202103525] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/20/2021] [Indexed: 05/11/2023]
Abstract
The use of engineered scaffolds or stem cells is investigated widely in the repair of injured musculoskeletal tissue. However, the combined regeneration of hierarchical osteochondral tissue remains a challenge due to delamination between cartilage and subchondral bone or difficulty in spatial control over differentiation of transplanted stem cells. Here, two types of composite spheroids are prepared using adipose-derived stem cells (hADSCs) and nanofibers coated with either transforming growth factor-β3 or bone morphogenetic growth factor-2 for chondrogenesis or osteogenesis, respectively. Each type of spheroid is then cultured within a 3D-printed microchamber in a spatially arranged manner to recapitulate the bilayer structure of osteochondral tissue. The presence of inductive factors regionally modulates in vitro chondrogenic or osteogenic differentiation of hADSCs within the biphasic construct without dedifferentiation. Furthermore, hADSCs from each spheroid proliferate and sprout and successfully connect the two layers mimicking the osteochondral interface without apertures. In vivo transplantation of the biphasic construct onto a femoral trochlear groove defect in rabbit knee joint results in 21.2 ± 2.8% subchondral bone volume/total volume and a cartilage score of 25.0 ± 3.7. The present approach can be an effective therapeutic platform to engineer complex tissue.
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Affiliation(s)
- Jinkyu Lee
- Department of Bioengineering, Institute for Bioengineering and Biopharmaceutical Research, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
- BK21 FOUR Human-Tech Convergence Program, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Seoyun Lee
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, BK21 FOUR Future Veterinary Medicine Leading Education and Research Center, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Seung Jae Huh
- Department of Bioengineering, Institute for Bioengineering and Biopharmaceutical Research, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
- BK21 FOUR Education and Research Group for Biopharmaceutical Innovation Leader, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Byung-Jae Kang
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, BK21 FOUR Future Veterinary Medicine Leading Education and Research Center, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Heungsoo Shin
- Department of Bioengineering, Institute for Bioengineering and Biopharmaceutical Research, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
- BK21 FOUR Education and Research Group for Biopharmaceutical Innovation Leader, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
- Institute of Nano Science and Technology, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
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10
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Kim S, Choi Y, Lee W, Kim K. Fabrication Parameter-Dependent Physico-Chemical Properties of Thiolated Gelatin/PEGDA Interpenetrating Network Hydrogels. Tissue Eng Regen Med 2021; 19:309-319. [PMID: 34905183 PMCID: PMC8971263 DOI: 10.1007/s13770-021-00413-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/29/2021] [Accepted: 11/14/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND The development of three-dimensional hydrogels using polymeric biomaterials is a key technology for tissue engineering and regenerative medicine. Successful tissue engineering requires the control and identification of the physicochemical properties of hydrogels. METHODS Interpenetrating network (IPN) hydrogel was developed using thiolated gelatin (GSH) and poly(ethylene glycol) diacrylate (PEGDA), with the aid of ammonium persulfate (APS) and N,N,N,N'-tetramethylethylenediamine (TEMED) as radical initiators. Each component was prepared in the following concentrations, respectively: 2.5 and 5% GSH (LG and HG), 12.5 and 25% PEGDA (LP and HP), 3% APS/1.5% TEMED (LI), and 4% APS/2% TEMED (HI). IPN hydrogel was fabricated by the mixing of GSH, PEGDA, and initiators in 5:4:1 volume ratios, and incubated at 37 °C for 30 min in the following 6 experimental formulations: (1) HG-LP-LI, (2) HG-LP-HI, (3) LG-HP-LI, (4) LG-HP-HI, (5) HG-HP-HI, and (6) HG-HP-LI. Herein, the physico-chemical characteristics of IPN hydrogels, including their morphological structures, hydrolytic degradation properties, mechanical properties, embedded protein release kinetics, and biocompatibility, were investigated. RESULTS The characteristics of the hydrogel were significantly manipulated by the concentration of the polymer, especially the conversion between HP and LP, rather than the concentration of the initiator, and no hydrogel formulation exhibited any toxicity to fibroblast and HaCaT cells. CONCLUSION We provide structural-physical relationships of the hydrogels by which means their physical properties could be conveniently controlled through component control, which could be versatilely utilized for various organizational engineering strategies.
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Affiliation(s)
- Sungjun Kim
- Department of Chemical and Biochemical Engineering, Dongguk University, Seoul, 04620 Korea
| | - Yunyoung Choi
- Department of Chemical and Biochemical Engineering, Dongguk University, Seoul, 04620 Korea
| | - Wonjeong Lee
- Department of Chemical and Biochemical Engineering, Dongguk University, Seoul, 04620 Korea
| | - Kyobum Kim
- Department of Chemical and Biochemical Engineering, Dongguk University, Seoul, 04620 Korea
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11
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Pearce HA, Jiang EY, Swain JWR, Navara AM, Guo JL, Kim YS, Woehr A, Hartgerink JD, Mikos AG. Evaluating the physicochemical effects of conjugating peptides into thermogelling hydrogels for regenerative biomaterials applications. Regen Biomater 2021; 8:rbab073. [PMID: 34934509 PMCID: PMC8684499 DOI: 10.1093/rb/rbab073] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/14/2021] [Accepted: 11/22/2021] [Indexed: 12/18/2022] Open
Abstract
Thermogelling hydrogels, such as poly(N-isopropylacrylamide) [P(NiPAAm)], provide tunable constructs leveraged in many regenerative biomaterial applications. Recently, our lab developed the crosslinker poly(glycolic acid)-poly(ethylene glycol)-poly(glycolic acid)-di(but-2-yne-1,4-dithiol), which crosslinks P(NiPAAm-co-glycidyl methacrylate) via thiol-epoxy reaction and can be functionalized with azide-terminated peptides via alkyne-azide click chemistry. This study's aim was to evaluate the impact of peptides on the physicochemical properties of the hydrogels. The physicochemical properties of the hydrogels including the lower critical solution temperature, crosslinking times, swelling, degradation, peptide release and cytocompatibility were evaluated. The gels bearing peptides increased equilibrium swelling indicating hydrophilicity of the hydrogel components. Comparable sol fractions were found for all groups, indicating that inclusion of peptides does not impact crosslinking. Moreover, the inclusion of a matrix metalloproteinase-sensitive peptide allowed elucidation of whether release of peptides from the network was driven by hydrolysis or enzymatic cleavage. The hydrophilicity of the network determined by the swelling behavior was demonstrated to be the most important factor in dictating hydrogel behavior over time. This study demonstrates the importance of characterizing the impact of additives on the physicochemical properties of hydrogels. These characteristics are key in determining design considerations for future in vitro and in vivo studies for tissue regeneration.
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Affiliation(s)
- Hannah A Pearce
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Emily Y Jiang
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Joseph W R Swain
- Depatment of Chemistry, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Adam M Navara
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Jason L Guo
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Yu Seon Kim
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Andrew Woehr
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Jeffrey D Hartgerink
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
- Depatment of Chemistry, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Antonios G Mikos
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
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12
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Wei W, Dai H. Articular cartilage and osteochondral tissue engineering techniques: Recent advances and challenges. Bioact Mater 2021; 6:4830-4855. [PMID: 34136726 PMCID: PMC8175243 DOI: 10.1016/j.bioactmat.2021.05.011] [Citation(s) in RCA: 108] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/20/2021] [Accepted: 05/11/2021] [Indexed: 12/18/2022] Open
Abstract
In spite of the considerable achievements in the field of regenerative medicine in the past several decades, osteochondral defect regeneration remains a challenging issue among diseases in the musculoskeletal system because of the spatial complexity of osteochondral units in composition, structure and functions. In order to repair the hierarchical tissue involving different layers of articular cartilage, cartilage-bone interface and subchondral bone, traditional clinical treatments including palliative and reparative methods have showed certain improvement in pain relief and defect filling. It is the development of tissue engineering that has provided more promising results in regenerating neo-tissues with comparable compositional, structural and functional characteristics to the native osteochondral tissues. Here in this review, some basic knowledge of the osteochondral units including the anatomical structure and composition, the defect classification and clinical treatments will be first introduced. Then we will highlight the recent progress in osteochondral tissue engineering from perspectives of scaffold design, cell encapsulation and signaling factor incorporation including bioreactor application. Clinical products for osteochondral defect repair will be analyzed and summarized later. Moreover, we will discuss the current obstacles and future directions to regenerate the damaged osteochondral tissues.
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Affiliation(s)
- Wenying Wei
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan, 430070, China
- International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China
| | - Honglian Dai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan, 430070, China
- Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Xianhu Hydrogen Valley, Foshan, 528200, China
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13
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Wen C, Xu L, Xu X, Wang D, Liang Y, Duan L. Insulin-like growth factor-1 in articular cartilage repair for osteoarthritis treatment. Arthritis Res Ther 2021; 23:277. [PMID: 34717735 PMCID: PMC8556920 DOI: 10.1186/s13075-021-02662-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 10/17/2021] [Indexed: 11/10/2022] Open
Abstract
Articular cartilage repair is a critical issue in osteoarthritis (OA) treatment. The insulin-like growth factor (IGF) signaling pathway has been implicated in articular cartilage repair. IGF-1 is a member of a family of growth factors that are structurally closely related to pro-insulin and can promote chondrocyte proliferation, enhance matrix production, and inhibit chondrocyte apoptosis. Here, we reviewed the role of IGF-1 in cartilage anabolism and catabolism. Moreover, we discussed the potential role of IGF-1 in OA treatment. Of note, we summarized the recent progress on IGF delivery systems. Optimization of IGF delivery systems will facilitate treatment application in cartilage repair and improve OA treatment efficacy.
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Affiliation(s)
- Caining Wen
- Department of Orthopedics, Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic Technology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China
| | - Limei Xu
- Department of Orthopedics, Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic Technology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China
| | - Xiao Xu
- Department of Orthopedics, Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic Technology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China
| | - Daping Wang
- Department of Orthopedics, Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic Technology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China.,Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yujie Liang
- Department of Orthopedics, Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic Technology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China. .,Department of Child and Adolescent Psychiatry, Shenzhen Kangning Hospital, Shenzhen Mental Health Center, Shenzhen, 518003, China.
| | - Li Duan
- Department of Orthopedics, Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic Technology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China.
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14
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Guo JL, Kim YS, Koons GL, Lam J, Navara AM, Barrios S, Xie VY, Watson E, Smith BT, Pearce HA, Orchard EA, van den Beucken JJJP, Jansen JA, Wong ME, Mikos AG. Bilayered, peptide-biofunctionalized hydrogels for in vivo osteochondral tissue repair. Acta Biomater 2021; 128:120-129. [PMID: 33930575 PMCID: PMC8222183 DOI: 10.1016/j.actbio.2021.04.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 04/01/2021] [Accepted: 04/19/2021] [Indexed: 10/21/2022]
Abstract
Osteochondral defects present a unique clinical challenge due to their combination of phenotypically distinct cartilage and bone, which require specific, stratified biochemical cues for tissue regeneration. Furthermore, the articular cartilage exhibits significantly worse regeneration than bone due to its largely acellular and avascular nature, prompting significant demand for regenerative therapies. To address these clinical challenges, we have developed a bilayered, modular hydrogel system that enables the click functionalization of cartilage- and bone-specific biochemical cues to each layer. In this system, the crosslinker poly(glycolic acid)-poly(ethylene glycol)-poly(glycolic acid)-di(but-2-yne-1,4-dithiol) (PdBT) was click conjugated with either a cartilage- or bone-specific peptide sequence of interest, and then mixed with a suspension of thermoresponsive polymer and mesenchymal stem cells (MSCs) to generate tissue-specific, cell-encapsulated hydrogel layers targeting the cartilage or bone. We implanted bilayered hydrogels in rabbit femoral condyle defects and investigated the effects of tissue-specific peptide presentation and cell encapsulation on osteochondral tissue repair. After 12 weeks implantation, hydrogels with a chondrogenic peptide sequence produced higher histological measures of overall defect filling, cartilage surface regularity, glycosaminoglycan (GAG)/cell content of neocartilage and adjacent cartilage, and bone filling and bonding compared to non-chondrogenic hydrogels. Furthermore, MSC encapsulation promoted greater histological measures of overall defect filling, cartilage thickness, GAG/cell content of neocartilage, and bone filling. Our results establish the utility of this click functionalized hydrogel system for in vivo repair of the osteochondral unit. STATEMENT OF SIGNIFICANCE: Osteochondral repair requires mimicry of both cartilage- and bone-specific biochemical cues, which are highly distinct. While traditional constructs for osteochondral repair have mimicked gross compositional differences between the cartilage and bone in mineral content, mechanical properties, proteins, or cell types, few constructs have recapitulated the specific biochemical cues responsible for the differential development of cartilage and bone. In this study, click biofunctionalized, bilayered hydrogels produced stratified presentation of developmentally inspired peptide sequences for chondrogenesis and osteogenesis. This work represents, to the authors' knowledge, the first application of bioconjugation chemistry for the simultaneous repair of bone and cartilage tissue. The conjugation of tissue-specific peptide sequences successfully promoted development of both cartilage and bone tissues in vivo.
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Affiliation(s)
- Jason L Guo
- Department of Bioengineering, Rice University, Houston, TX, USA.
| | - Yu Seon Kim
- Department of Bioengineering, Rice University, Houston, TX, USA.
| | - Gerry L Koons
- Department of Bioengineering, Rice University, Houston, TX, USA.
| | - Johnny Lam
- Division of Cellular and Gene Therapies, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD, USA.
| | - Adam M Navara
- Department of Bioengineering, Rice University, Houston, TX, USA.
| | - Sergio Barrios
- Department of Bioengineering, Rice University, Houston, TX, USA.
| | - Virginia Y Xie
- Department of Bioengineering, Rice University, Houston, TX, USA.
| | - Emma Watson
- Department of Bioengineering, Rice University, Houston, TX, USA.
| | - Brandon T Smith
- Department of Bioengineering, Rice University, Houston, TX, USA.
| | - Hannah A Pearce
- Department of Bioengineering, Rice University, Houston, TX, USA.
| | | | | | - John A Jansen
- Department of Dentistry - Biomaterials, Radboud University Medical Center, Nijmegen, The Netherlands.
| | - Mark E Wong
- Department of Surgery, Division of Maxillofacial Surgery, The University of Texas School of Dentistry, Houston, TX, USA.
| | - Antonios G Mikos
- Department of Bioengineering, Rice University, Houston, TX, USA.
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15
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Pearce HA, Kim YS, Watson E, Bahrami K, Smoak MM, Jiang EY, Elder M, Shannon T, Mikos AG. Development of a modular, biocompatible thiolated gelatin microparticle platform for drug delivery and tissue engineering applications. Regen Biomater 2021; 8:rbab012. [PMID: 34211728 PMCID: PMC8240604 DOI: 10.1093/rb/rbab012] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 02/08/2021] [Accepted: 02/18/2021] [Indexed: 12/16/2022] Open
Abstract
The field of biomaterials has advanced significantly in the past decade. With the growing need for high-throughput manufacturing and screening, the need for modular materials that enable streamlined fabrication and analysis of tissue engineering and drug delivery schema has emerged. Microparticles are a powerful platform that have demonstrated promise in enabling these technologies without the need to modify a bulk scaffold. This building block paradigm of using microparticles within larger scaffolds to control cell ratios, growth factors and drug release holds promise. Gelatin microparticles (GMPs) are a well-established platform for cell, drug and growth factor delivery. One of the challenges in using GMPs though is the limited ability to modify the gelatin post-fabrication. In the present work, we hypothesized that by thiolating gelatin before microparticle formation, a versatile platform would be created that preserves the cytocompatibility of gelatin, while enabling post-fabrication modification. The thiols were not found to significantly impact the physicochemical properties of the microparticles. Moreover, the thiolated GMPs were demonstrated to be a biocompatible and robust platform for mesenchymal stem cell attachment. Additionally, the thiolated particles were able to be covalently modified with a maleimide-bearing fluorescent dye and a peptide, demonstrating their promise as a modular platform for tissue engineering and drug delivery applications.
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Affiliation(s)
- Hannah A Pearce
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Yu Seon Kim
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Emma Watson
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Kiana Bahrami
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Mollie M Smoak
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Emily Y Jiang
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Michael Elder
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Tate Shannon
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
| | - Antonios G Mikos
- Department of Bioengineering, Rice University, 6500 Main Street, Houston, TX 77030, USA
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16
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Gan QF, Choy KW, Foo CN, Leong PP, Cheong SK. Incorporating insulin growth Factor‐1 into regenerative and personalised medicine for musculoskeletal disorders: A systematic review. J Tissue Eng Regen Med 2021. [DOI: 10.1002/term.3192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Quan Fu Gan
- Pre‐Clinical Sciences Department Faculty of Medicine and Health Sciences UTAR Sg Long Campus Selangor Malaysia
| | - Ker Woon Choy
- Department of Anatomy Faculty of Medicine Universiti Teknologi MARA Sungai Buloh Selangor Malaysia
| | - Chai Nien Foo
- Population Medicine Department Faculty of Medicine and Health Sciences UTAR Sg Long Campus Selangor Malaysia
| | - Pooi Pooi Leong
- Pre‐Clinical Sciences Department Faculty of Medicine and Health Sciences UTAR Sg Long Campus Selangor Malaysia
| | - Soon Keng Cheong
- Medicine Department Faculty of Medicine and Health Sciences UTAR Sg Long Campus Selangor Malaysia
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17
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Rush MN, Coombs KE, Denny CT, Santistevan D, Huynh QM, Cicotte KN, Hedberg-Dirk EL. Acid Scavenger Free Synthesis of Oligo(Poly(Ethylene Glycol) Fumarate) Utilizing Inert Gas Sparging. Tissue Eng Part C Methods 2021; 27:296-306. [PMID: 33765836 PMCID: PMC8147510 DOI: 10.1089/ten.tec.2021.0027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 03/18/2021] [Indexed: 11/12/2022] Open
Abstract
The macromolecule oligo(poly(ethylene glycol) fumarate) (OPF) exhibits promising attributes for creating suitable three-dimensional hydrogel environments to study cell behavior, deliver therapeutics, and serve as a degradable, nonfouling material. However, traditional synthesis techniques are time consuming, contain salt contaminants, and generate significant waste. These issues have been overcome with an alternative, one-pot approach that utilizes inert gas sparging. Departing from previous synthetic schemes that require acid scavengers, inert gas sparging removes byproducts in situ, eliminating significant filtration and postprocessing steps, while allowing a more uniform product. Characterized by nuclear magnetic resonance, gel permeation chromatography, and differential scanning calorimetry, nitrogen sparge synthesis yields an OPF product with greater polymer length than traditional acid scavenger synthesis methods. Furthermore, nitrogen-sparged OPF readily crosslinks using either ultraviolet or thermal initiator methods with or without the addition of short-chain diacrylate units, allowing for greater tunability in hydrogel properties with little to no cytotoxicity. Overall, inert gas sparging provides a longer chain and cleaner polymer product for hydrogel material studies while maintaining degradable characteristics. Impact statement Using nitrogen sparging, we have demonstrated that oligo(poly(ethylene glycol) fumarate) (OPF) can be produced with decreased postprocessing, increased product purity, greater oligomerization, and cell viability. These properties lead to greater tunability in mechanical properties and a more versatile hydrogel for biomedical applications. The simplification of synthesis and elimination of impurities will expand the utility of OPF as a degradable hydrogel for cell culture, tissue engineering, regenerative medicine, and therapeutic delivery, among other applications.
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Affiliation(s)
- Matthew N. Rush
- Center for Biomedical Engineering, University of New Mexico, Albuquerque, New Mexico, USA
- Nanoscience and Microsystems Engineering Graduate Program, University of New Mexico, Albuquerque, New Mexico, USA
- Center for Integrated Nanotechnologies, Sandia National Laboratories/Los Alamos National Laboratory, Albuquerque, New Mexico, USA
| | - Kent E. Coombs
- Center for Biomedical Engineering, University of New Mexico, Albuquerque, New Mexico, USA
- Biomedical Sciences Graduate Program, University of New Mexico, Albuquerque, New Mexico, USA
| | - Christian T. Denny
- Center for Biomedical Engineering, University of New Mexico, Albuquerque, New Mexico, USA
- Biomedical Engineering Graduate Program, University of New Mexico, Albuquerque, New Mexico, USA
| | - David Santistevan
- Center for Biomedical Engineering, University of New Mexico, Albuquerque, New Mexico, USA
| | - Quan M. Huynh
- Center for Biomedical Engineering, University of New Mexico, Albuquerque, New Mexico, USA
- Biomedical Engineering Graduate Program, University of New Mexico, Albuquerque, New Mexico, USA
| | - Kirsten N. Cicotte
- Center for Biomedical Engineering, University of New Mexico, Albuquerque, New Mexico, USA
- Biomedical Engineering Graduate Program, University of New Mexico, Albuquerque, New Mexico, USA
| | - Elizabeth L. Hedberg-Dirk
- Center for Biomedical Engineering, University of New Mexico, Albuquerque, New Mexico, USA
- Nanoscience and Microsystems Engineering Graduate Program, University of New Mexico, Albuquerque, New Mexico, USA
- Biomedical Engineering Graduate Program, University of New Mexico, Albuquerque, New Mexico, USA
- Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, New Mexico, USA
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18
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Trucco D, Vannozzi L, Teblum E, Telkhozhayeva M, Nessim GD, Affatato S, Al-Haddad H, Lisignoli G, Ricotti L. Graphene Oxide-Doped Gellan Gum-PEGDA Bilayered Hydrogel Mimicking the Mechanical and Lubrication Properties of Articular Cartilage. Adv Healthc Mater 2021; 10:e2001434. [PMID: 33586352 DOI: 10.1002/adhm.202001434] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 12/28/2020] [Indexed: 12/15/2022]
Abstract
Articular cartilage (AC) is a specialized connective tissue able to provide a low-friction gliding surface supporting shock-absorption, reducing stresses, and guaranteeing wear-resistance thanks to its structure and mechanical and lubrication properties. Being an avascular tissue, AC has a limited ability to heal defects. Nowadays, conventional strategies show several limitations, which results in ineffective restoration of chondral defects. Several tissue engineering approaches have been proposed to restore the AC's native properties without reproducing its mechanical and lubrication properties yet. This work reports the fabrication of a bilayered structure made of gellan gum (GG) and poly (ethylene glycol) diacrylate (PEGDA), able to mimic the mechanical and lubrication features of both AC superficial and deep zones. Through appropriate combinations of GG and PEGDA, cartilage Young's modulus is effectively mimicked for both zones. Graphene oxide is used as a dopant agent for the superficial hydrogel layer, demonstrating a lower friction than the nondoped counterpart. The bilayered hydrogel's antiwear properties are confirmed by using a knee simulator, following ISO 14243. Finally, in vitro tests with human chondrocytes confirm the absence of cytotoxicity effects. The results shown in this paper open the way to a multilayered synthetic injectable or surgically implantable filler for restoring AC defects.
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Affiliation(s)
- Diego Trucco
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, Pisa, 56127, Italy
- Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, Pisa, 56127, Italy
- IRCSS Istituto Ortopedico Rizzoli, SC Laboratorio di Immunoreumatologia e Rigenerazione Tissutale, Via di Barbiano, 1/10, Bologna, 40136, Italy
| | - Lorenzo Vannozzi
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, Pisa, 56127, Italy
- Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, Pisa, 56127, Italy
| | - Eti Teblum
- Department of Chemistry, Bar-Ilan University, Ramat Gan, 52900, Israel
- Bar Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat Gan, 52900, Israel
| | - Madina Telkhozhayeva
- Department of Chemistry, Bar-Ilan University, Ramat Gan, 52900, Israel
- Bar Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat Gan, 52900, Israel
| | - Gilbert Daniel Nessim
- Department of Chemistry, Bar-Ilan University, Ramat Gan, 52900, Israel
- Bar Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat Gan, 52900, Israel
| | - Saverio Affatato
- IRCSS Istituto Ortopedico Rizzoli, Laboratorio Tecnologie Biomediche, Via di Barbiano, 1/10, Bologna, 40136, Italy
| | - Hind Al-Haddad
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, Pisa, 56127, Italy
- Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, Pisa, 56127, Italy
| | - Gina Lisignoli
- IRCSS Istituto Ortopedico Rizzoli, SC Laboratorio di Immunoreumatologia e Rigenerazione Tissutale, Via di Barbiano, 1/10, Bologna, 40136, Italy
| | - Leonardo Ricotti
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, Pisa, 56127, Italy
- Department of Excellence in Robotics & AI, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, Pisa, 56127, Italy
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19
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Maihöfer J, Madry H, Rey-Rico A, Venkatesan JK, Goebel L, Schmitt G, Speicher-Mentges S, Cai X, Meng W, Zurakowski D, Menger MD, Laschke MW, Cucchiarini M. Hydrogel-Guided, rAAV-Mediated IGF-I Overexpression Enables Long-Term Cartilage Repair and Protection against Perifocal Osteoarthritis in a Large-Animal Full-Thickness Chondral Defect Model at One Year In Vivo. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2008451. [PMID: 33734514 DOI: 10.1002/adma.202008451] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/02/2021] [Indexed: 06/12/2023]
Abstract
The regeneration of focal articular cartilage defects is complicated by the reduced quality of the repair tissue and the potential development of perifocal osteoarthritis (OA). Biomaterial-guided gene therapy may enhance cartilage repair by controlling the release of therapeutic sequences in a spatiotemporal manner. Here, the benefits of delivering a recombinant adeno-associated virus (rAAV) vector coding for the human insulin-like growth factor I (IGF-I) via an alginate hydrogel (IGF-I/AlgPH155) to enhance repair of full-thickness chondral defects following microfracture surgery after one year in minipigs versus control (lacZ/AlgPH155) treatment are reported. Sustained IGF-I overexpression is significantly achieved in the repair tissue of defects treated with IGF-I/AlgPH155 versus those receiving lacZ/AlgPH155 for one year and in the cartilage surrounding the defects. Administration of IGF-I/AlgPH155 significantly improves parameters of cartilage repair at one year relative to lacZ/AlgPH155 (semiquantitative total histological score, cell densities, matrix deposition) without deleterious or immune reactions. Remarkably, delivery of IGF-I/AlgPH155 also significantly reduces perifocal OA and inflammation after one year versus lacZ/AlgPH155 treatment. Biomaterial-guided rAAV gene transfer represents a valuable clinical approach to promote cartilage repair and to protect against OA.
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Affiliation(s)
- Johanna Maihöfer
- Center of Experimental Orthopaedics, Saarland University and Saarland University Medical Center, D-66421, Homburg/Saar, Germany
| | - Henning Madry
- Center of Experimental Orthopaedics, Saarland University and Saarland University Medical Center, D-66421, Homburg/Saar, Germany
| | - Ana Rey-Rico
- Center of Experimental Orthopaedics, Saarland University and Saarland University Medical Center, D-66421, Homburg/Saar, Germany
| | - Jagadeesh K Venkatesan
- Center of Experimental Orthopaedics, Saarland University and Saarland University Medical Center, D-66421, Homburg/Saar, Germany
| | - Lars Goebel
- Center of Experimental Orthopaedics, Saarland University and Saarland University Medical Center, D-66421, Homburg/Saar, Germany
| | - Gertrud Schmitt
- Center of Experimental Orthopaedics, Saarland University and Saarland University Medical Center, D-66421, Homburg/Saar, Germany
| | - Susanne Speicher-Mentges
- Center of Experimental Orthopaedics, Saarland University and Saarland University Medical Center, D-66421, Homburg/Saar, Germany
| | - Xiaoyu Cai
- Center of Experimental Orthopaedics, Saarland University and Saarland University Medical Center, D-66421, Homburg/Saar, Germany
| | - Weikun Meng
- Center of Experimental Orthopaedics, Saarland University and Saarland University Medical Center, D-66421, Homburg/Saar, Germany
| | - David Zurakowski
- Departments of Anesthesia and Surgery, Children's Hospital Boston, Harvard Medical School, Boston, MA, 02115, USA
| | - Michael D Menger
- Institute for Clinical and Experimental Surgery, Saarland University, D-66421, Homburg/Saar, Germany
| | - Matthias W Laschke
- Institute for Clinical and Experimental Surgery, Saarland University, D-66421, Homburg/Saar, Germany
| | - Magali Cucchiarini
- Center of Experimental Orthopaedics, Saarland University and Saarland University Medical Center, D-66421, Homburg/Saar, Germany
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20
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Bittner SM, Pearce HA, Hogan KJ, Smoak MM, Guo JL, Melchiorri AJ, Scott DW, Mikos AG. Swelling Behaviors of 3D Printed Hydrogel and Hydrogel-Microcarrier Composite Scaffolds. Tissue Eng Part A 2021; 27:665-678. [PMID: 33470161 DOI: 10.1089/ten.tea.2020.0377] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The present study sought to demonstrate the swelling behavior of hydrogel-microcarrier composite constructs to inform their use in controlled release and tissue engineering applications. In this study, gelatin methacrylate (GelMA) and GelMA-gelatin microparticle (GMP) composite constructs were three-dimensionally printed, and their swelling and degradation behavior was evaluated over time and as a function of the degree of crosslinking of included GMPs. GelMA-only constructs and composite constructs loaded with GMPs crosslinked with 10 mM (GMP-10) or 40 mM (GMP-40) glutaraldehyde were swollen in phosphate-buffered saline for up to 28 days to evaluate changes in swelling and polymer loss. In addition, scaffold reswelling capacity was evaluated under five successive drying-rehydration cycles. All printed materials demonstrated shear thinning behavior, with microparticle additives significantly increasing viscosity relative to the GelMA-only solution. Swelling results demonstrated that for GelMA/GMP-10 and GelMA/GMP-40 scaffolds, fold and volumetric swelling were statistically higher and lower, respectively, than for GelMA-only scaffolds after 28 days, and the volumetric swelling of GelMA and GelMA/GMP-40 scaffolds decreased over time. After 5 drying-rehydration cycles, GelMA scaffolds demonstrated higher fold swelling than both GMP groups while also showing lower volumetric swelling than GMP groups. Although statistical differences were not observed in the swelling of GMP-10 and GMP-40 particles alone, the interaction of GelMA/GMP demonstrated a significant effect on the swelling behaviors of composite scaffolds. These results demonstrate an example hydrogel-microcarrier composite system's swelling behavior and can inform the future use of such a composite system for controlled delivery of bioactive molecules in vitro and in vivo in tissue engineering applications. Impact statement In this study, porous three-dimensional printed (3DP) hydrogel constructs with and without natural polymer microcarriers were fabricated to observe swelling and degradation behavior under continuous swelling and drying-rehydration cycle conditions. Inclusion of microcarriers with different crosslinking densities led to distinct swelling behaviors for each biomaterial ink tested. 3DP hydrogel and hydrogel-microcarrier composite scaffolds have been commonly used in tissue engineering for the delivery of biomolecules. This study demonstrates the swelling behavior of porous hydrogel and hydrogel-microcarrier scaffolds that may inform later use of such materials for controlled release applications in a variety of fields including materials development and tissue regeneration.
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Affiliation(s)
- Sean M Bittner
- Department of Bioengineering and Rice University, Houston, Texas, USA.,Biomaterials Lab, Rice University, Houston, Texas, USA.,NIH/NIBIB Center for Engineering Complex Tissues, Rice University, Houston, Texas, USA
| | - Hannah A Pearce
- Department of Bioengineering and Rice University, Houston, Texas, USA.,Biomaterials Lab, Rice University, Houston, Texas, USA.,NIH/NIBIB Center for Engineering Complex Tissues, Rice University, Houston, Texas, USA
| | - Katie J Hogan
- Department of Bioengineering and Rice University, Houston, Texas, USA.,Biomaterials Lab, Rice University, Houston, Texas, USA.,NIH/NIBIB Center for Engineering Complex Tissues, Rice University, Houston, Texas, USA.,Medical Scientist Training Program, Baylor College of Medicine, Houston, Texas, USA
| | - Mollie M Smoak
- Department of Bioengineering and Rice University, Houston, Texas, USA.,Biomaterials Lab, Rice University, Houston, Texas, USA.,NIH/NIBIB Center for Engineering Complex Tissues, Rice University, Houston, Texas, USA
| | - Jason L Guo
- Department of Bioengineering and Rice University, Houston, Texas, USA.,Biomaterials Lab, Rice University, Houston, Texas, USA.,NIH/NIBIB Center for Engineering Complex Tissues, Rice University, Houston, Texas, USA
| | - Anthony J Melchiorri
- Department of Bioengineering and Rice University, Houston, Texas, USA.,Biomaterials Lab, Rice University, Houston, Texas, USA.,NIH/NIBIB Center for Engineering Complex Tissues, Rice University, Houston, Texas, USA
| | - David W Scott
- Department of Statistics, Rice University, Houston, Texas, USA
| | - Antonios G Mikos
- Department of Bioengineering and Rice University, Houston, Texas, USA.,Biomaterials Lab, Rice University, Houston, Texas, USA.,NIH/NIBIB Center for Engineering Complex Tissues, Rice University, Houston, Texas, USA
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21
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Effect of 3D Printing Temperature on Bioactivity of Bone Morphogenetic Protein-2 Released from Polymeric Constructs. Ann Biomed Eng 2021; 49:2114-2125. [PMID: 33560466 DOI: 10.1007/s10439-021-02736-9] [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] [Received: 11/18/2020] [Accepted: 01/20/2021] [Indexed: 12/16/2022]
Abstract
Growth factors such as bone morphogenetic protein-2 (BMP-2) are potent tools for tissue engineering. Three-dimensional (3D) printing offers a potential strategy for delivery of BMP-2 from polymeric constructs; however, these biomolecules are sensitive to inactivation by the elevated temperatures commonly employed during extrusion-based 3D printing. Therefore, we aimed to correlate printing temperature to the bioactivity of BMP-2 released from 3D printed constructs composed of a model polymer, poly(propylene fumarate). Following encapsulation of BMP-2 in poly(DL-lactic-co-glycolic acid) particles, growth factor-loaded fibers were fabricated at three different printing temperatures. Resulting constructs underwent 28 days of aqueous degradation for collection of released BMP-2. Supernatants were then assayed for the presence of bioactive BMP-2 using a cellular assay for alkaline phosphatase activity. Cumulative release profiles indicated that BMP-2 released from constructs that were 3D printed at physiologic and intermediate temperatures exhibited comparable total amounts of bioactive BMP-2 release as those encapsulated in non-printed particulate delivery vehicles. Meanwhile, the elevated printing temperature of 90 °C resulted in a decreased amount of total bioactive BMP-2 release from the fibers. These findings elucidate the effects of elevated printing temperatures on BMP-2 bioactivity during extrusion-based 3D printing, and enlighten polymeric material selection for 3D printing with growth factors.
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22
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Zhou L, Gjvm VO, Malda J, Stoddart MJ, Lai Y, Richards RG, Ki-Wai Ho K, Qin L. Innovative Tissue-Engineered Strategies for Osteochondral Defect Repair and Regeneration: Current Progress and Challenges. Adv Healthc Mater 2020; 9:e2001008. [PMID: 33103381 DOI: 10.1002/adhm.202001008] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 09/19/2020] [Indexed: 12/20/2022]
Abstract
Clinical treatments for the repair of osteochondral defects (OCD) are merely palliative, not completely curative, and thus enormously unfulfilled challenges. With the in-depth studies of biology, medicine, materials, and engineering technology, the conception of OCD repair and regeneration should be renewed. During the past decades, many innovative tissue-engineered approaches for repairing and regenerating damaged osteochondral units have been widely explored. Various scaffold-free and scaffold-based strategies, such as monophasic, biphasic, and currently fabricated multiphasic and gradient architectures have been proposed and evaluated. Meanwhile, progenitor cells and tissue-specific cells have also been intensively investigated in vivo as well as ex vivo. Concerning bioactive factors and drugs, they have been combined with scaffolds and/or living cells, and even released in a spatiotemporally controlled manner. Although tremendous progress has been achieved, further research and development (R&D) is needed to convert preclinical outcomes into clinical applications. Here, the osteochondral unit structure, its defect classifications, and diagnosis are summarized. Commonly used clinical reparative techniques, tissue-engineered strategies, emerging 3D-bioprinting technologies, and the status of their clinical applications are discussed. Existing challenges to translation are also discussed and potential solutions for future R&D directions are proposed.
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Affiliation(s)
- Liangbin Zhou
- Musculoskeletal Research Laboratory of Department of Orthopedics & Traumatology, and Innovative Orthopaedic Biomaterial and Drug Translational Research Laboratory of Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, 999077, China
| | - Van Osch Gjvm
- Department of Orthopedics and Department of Otorhinolaryngology, Erasmus MC, University Medical Center, Rotterdam, 3000 CA, The Netherlands
- Department of Biomechanical Engineering, Delft University of Technology (TU Delft), Delft, 2600 AA, The Netherlands
| | - Jos Malda
- Department of Orthopaedics of University Medical Center Utrecht, and Department of Clinical Sciences of Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CS, The Netherlands
| | - Martin J Stoddart
- AO Research Institute Davos, Clavadelerstrasse 8, Davos, CH 7270, Switzerland
| | - Yuxiao Lai
- Centre for Translational Medicine Research and Development, Shenzhen Institutes of Advanced Technology, The Chinese Academy of Sciences, Shenzhen, 518000, China
| | - R Geoff Richards
- AO Research Institute Davos, Clavadelerstrasse 8, Davos, CH 7270, Switzerland
| | - Kevin Ki-Wai Ho
- Musculoskeletal Research Laboratory of Department of Orthopedics & Traumatology, and Innovative Orthopaedic Biomaterial and Drug Translational Research Laboratory of Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, 999077, China
| | - Ling Qin
- Musculoskeletal Research Laboratory of Department of Orthopedics & Traumatology, and Innovative Orthopaedic Biomaterial and Drug Translational Research Laboratory of Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, 999077, China
- Centre for Translational Medicine Research and Development, Shenzhen Institutes of Advanced Technology, The Chinese Academy of Sciences, Shenzhen, 518000, China
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23
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Guo JL, Kim YS, Orchard EA, van den Beucken JJ, Jansen JA, Wong ME, Mikos AG. A Rabbit Femoral Condyle Defect Model for Assessment of Osteochondral Tissue Regeneration. Tissue Eng Part C Methods 2020; 26:554-564. [PMID: 33050806 PMCID: PMC7698983 DOI: 10.1089/ten.tec.2020.0261] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 10/05/2020] [Indexed: 02/06/2023] Open
Abstract
Osteochondral tissue repair represents a common clinical need, with multiple approaches in tissue engineering and regenerative medicine being investigated for the repair of defects of articular cartilage and subchondral bone. A full thickness rabbit femoral condyle defect is a clinically relevant model of an articulating and load bearing joint surface for the investigation of osteochondral tissue repair by various cell-, biomolecule-, and biomaterial-based implants. In this protocol, we describe the methodology and 1.5- to 2-h surgical procedure for the generation of a reproducible, full thickness defect for construct implantation in the rabbit medial femoral condyle. Furthermore, we describe a step-by-step procedure for osteochondral tissue collection and the assessment of tissue formation using standardized histological, radiological, mechanical, and biochemical analytical techniques. This protocol illustrates the critical steps for reproducibility and minimally invasive surgery as well as applications to evaluate the efficacy of cartilage and bone tissue engineering implants, with emphasis on the usage of histological and radiological measures of tissue growth. Impact statement Although multiple surgical techniques have been developed for the treatment of osteochondral defects, repairing the tissues to their original state remains an unmet need. Such limitations have thus prompted the development of various constructs for osteochondral tissue regeneration. An in vivo model that is both clinically relevant and economically practical is necessary to evaluate the efficacy of different tissue engineered constructs. In this article, we present a full thickness rabbit femoral condyle defect model and describe the analytical techniques to assess the regeneration of osteochondral tissue.
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Affiliation(s)
- Jason L. Guo
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | - Yu Seon Kim
- Department of Bioengineering, Rice University, Houston, Texas, USA
| | | | | | - John A. Jansen
- Department of Dentistry-Biomaterials, Radboudumc, Nijmegen, The Netherlands
| | - Mark E. Wong
- Department of Oral and Maxillofacial Surgery, The University of Texas Health Science Center at Houston, Houston, Texas, USA
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24
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Zhang X, Xing H, Qi F, Liu H, Gao L, Wang X. Local delivery of insulin/IGF-1 for bone regeneration: carriers, strategies, and effects. Nanotheranostics 2020; 4:242-255. [PMID: 32923314 PMCID: PMC7484631 DOI: 10.7150/ntno.46408] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 08/21/2020] [Indexed: 12/19/2022] Open
Abstract
Bone defects caused by trauma, tumor resection, congenital malformation and infection are still a major challenge for clinicians. Biomimetic bone materials have attracted more and more attention in science and industry. Insulin and insulin-like growth factor-1 (IGF-1) have been increasingly recognized as an inducible factor for osteogenesis and angiogenesis. Spatiotemporal release of insulin may serve as the promising strategy. Considering the successful application of nanoparticles in drug loading, various insulin delivery systems have been developed, including (poly (lactic-co-glycolic acid), PLGA), hydroxyapatite (HA), gelatin, chitosan, alginate, and (γ-glutamic acid)/β-tricalcium phosphate, γ-PGA/β-TCP). Here, we have reviewed the progress on nanoparticles carrying insulin/IGF for bone regeneration. In addition, the key regulatory mechanism of insulin in bone regeneration is also summarized. The future application strategies and the challenges in bone regeneration are also discussed.
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Affiliation(s)
- Xiaoxuan Zhang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, China.,Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials
| | - Helin Xing
- Department of Prosthodontics, Beijing Stomatological Hospital and School of Stomatology, Capital Medical University, Beijing, 100050, China
| | - Feng Qi
- Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO, USA
| | - Hongchen Liu
- Institute of Stomatology & Oral Maxilla Facial Key Laboratory, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
| | - Lizeng Gao
- CAS Engineering Laboratory for Nanozyme, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Xing Wang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan 030001, China.,Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials.,Institute of Stomatology & Oral Maxilla Facial Key Laboratory, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
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25
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Tran HD, Park KD, Ching YC, Huynh C, Nguyen DH. A comprehensive review on polymeric hydrogel and its composite: Matrices of choice for bone and cartilage tissue engineering. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.06.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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26
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Dual delivery of stem cells and insulin-like growth factor-1 in coacervate-embedded composite hydrogels for enhanced cartilage regeneration in osteochondral defects. J Control Release 2020; 327:284-295. [PMID: 32763434 DOI: 10.1016/j.jconrel.2020.08.002] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 07/07/2020] [Accepted: 08/02/2020] [Indexed: 12/31/2022]
Abstract
Exogenous dual delivery of progenitor cell population and therapeutic growth factors (GFs) is one of alternative tissue engineering strategies for osteochondral tissue regeneration. In the present study, an implantable dual delivery platform was developed using coacervates (Coa) (i.e., a tertiary complex of poly(ethylene argininylaspartate diglyceride) (PEAD) polycation, heparin, and cargo insulin-like growth factor-1 (IGF-1), in thiolated gelatin (gelatin-SH)/ poly(ethylene glycol) diacrylate (PEGDA) interpenetrating network (IPN) hydrogels. Since Coa is able to protect cargo GF and maintain its long-term bioactivity, it is speculated that Coa-mediated delivery of chondrogenic factor IGF-1 with the aid of adipose-derived stem cells (ADSCs) would synergistically facilitate osteochondral tissue repair during physiological regeneration process. Our results indicate that gelatin-SH/PEGDA IPN hydrogels demonstrated biocompatibility and mechanical properties for a possible long-term transplantation, and PEAD-base Coa exhibited a sustained release of bioactive IGF-1 over 3 weeks. Subsequently, released IGF-1 from Coa could effectively induce chondrogenic differentiation of embedded ADSCs in the hydrogel, by showing enhanced glycosaminoglycan deposition and expression of chondrogenesis-associated genes. More importantly, at 12 weeks post-implantation in a rabbit full thickness osteochondral defect model, the quality of regenerative tissues in both chondral and subchondral layers was significantly improved in dual delivery of ADSC and IGF-1 in Coa encapsulated in gelatin-SH/PEGDA IPN hydrogels, as compared with a single delivery of ADSC only and a dual delivery without Coa. Therefore, we conclude that our Coa-embedded composite hydrogel platform could effectively augment osteochondral tissue regeneration holds promise for a feasible osteoarthritis therapeutic application.
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27
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5-aminopyrazole-conjugated gelatin hydrogel: A controlled 5-fluorouracil delivery system for rectal administration. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101669] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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28
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Gaihre B, Liu X, Lee Miller A, Yaszemski M, Lu L. Poly(Caprolactone Fumarate) and Oligo[Poly(Ethylene Glycol) Fumarate]: Two Decades of Exploration in Biomedical Applications. POLYM REV 2020. [DOI: 10.1080/15583724.2020.1758718] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Bipin Gaihre
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Xifeng Liu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - A. Lee Miller
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Michael Yaszemski
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Lichun Lu
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
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29
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Exosome-mediated Bidirectional Signaling between Mesenchymal Stem Cells and Chondrocytes for Enhanced Chondrogenesis. BIOTECHNOL BIOPROC E 2019. [DOI: 10.1007/s12257-019-0332-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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30
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Lin H, Beck AM, Shimomura K, Sohn J, Fritch MR, Deng Y, Kilroy EJ, Tang Y, Alexander PG, Tuan RS. Optimization of photocrosslinked gelatin/hyaluronic acid hybrid scaffold for the repair of cartilage defect. J Tissue Eng Regen Med 2019; 13:1418-1429. [PMID: 31066519 PMCID: PMC6739828 DOI: 10.1002/term.2883] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 04/05/2019] [Accepted: 04/29/2019] [Indexed: 01/07/2023]
Abstract
There is no therapy currently available for fully repairing articular cartilage lesions. Our laboratory has recently developed a visible light-activatable methacrylated gelatin (mGL) hydrogel, with the potential for cartilage regeneration. In this study, we further optimized mGL scaffolds by supplementing methacrylated hyaluronic acid (mHA), which has been shown to stimulate chondrogenesis via activation of critical cellular signalling pathways. We hypothesized that the introduction of an optimal ratio of mHA would enhance the biological properties of mGL scaffolds and augment chondrogenesis of human bone marrow-derived mesenchymal stem cells (hBMSCs). To test this hypothesis, hybrid scaffolds consisting of mGL and mHA at different weight ratios were fabricated with hBMSCs encapsulated at 20 × 106 cells/ml and maintained in a chondrogenesis-promoting medium. The chondrogenenic differentiation of hBMSCs, within different scaffolds, was estimated after 8 weeks of culture. Our results showed that mGL/mHA at a 9:1 (%, w/v) ratio resulted in the lowest hBMSC hypertrophy and highest glycosaminoglycan production, with a slightly increased volume of the entire construct. The applicability of this optimally designed mGL/mHA hybrid scaffold for cartilage repair was then examined in vivo. A full-thickness cylindrical osteochondral defect was surgically created in the rabbit femoral condyle, and a three-dimensional cell-biomaterial construct was fabricated by in situ photocrosslinking to fully fill the lesion site. The results showed that implantation of the mGL/mHA (9:1) construct resulted in both cartilage and subchondral bone regeneration after 12 weeks, supporting its use as a promising scaffold for repair and resurfacing of articular cartilage defects, in the clinical setting.
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Affiliation(s)
- Hang Lin
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
- McGowan Institute of Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pittsburgh, Pennsylvania
| | - Angela M. Beck
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
- Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Kazunori Shimomura
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Jihee Sohn
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Madalyn R. Fritch
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
- Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Yuhao Deng
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Evan J. Kilroy
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
- Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Ying Tang
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Peter G. Alexander
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Rocky S. Tuan
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
- Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania
- McGowan Institute of Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pittsburgh, Pennsylvania
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31
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Tarafder S, Gulko J, Kim D, Sim KH, Gutman S, Yang J, Cook JL, Lee CH. Effect of dose and release rate of CTGF and TGFβ3 on avascular meniscus healing. J Orthop Res 2019; 37:1555-1562. [PMID: 30908692 PMCID: PMC6601329 DOI: 10.1002/jor.24287] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 03/08/2019] [Indexed: 02/04/2023]
Abstract
Meniscus tears in the avascular region rarely functionally heal due to poor intrinsic healing capacity, frequently resulting in tear propagation, followed by meniscus deterioration. Recently, we have reported that time-controlled application of connective tissue growth factor (CTGF) and transforming tissue growth factor β3 (TGFβ3) significantly improved healing of avascular meniscus tears by inducing recruitment and step-wise fibrocartilaginous differentiation of mesenchymal stem/progenitor cells (MSCs). In this study, we investigated effects of the dose of CTGF and the release rate of TGFβ3 on avascular meniscus healing in our existing explant model. Our hypothesis was that dose and release rate of CTGF and TGFβ3 are contributing factors for functional outcome in avascular meniscus healing by stem cell recruitment. Low (100 ng/ml) and high (1,000 ng/ml) doses of CTGF as well as fast (0.46 ± 0.2 ng/day) and slow (0.29 ± 0.1 ng/day) release rates of TGFβ3 were applied to our established meniscus explant model for meniscus tears in the inner-third avascular region. The release rate of TGFβ3 was controlled by varying compositions of poly(lactic-co-glycolic acids) (PLGA) microspheres. The meniscus explants were then cultured for 8 weeks on top of mesenchymal stem/progenitor cells (MSCs). Among the tested combinations, we found that a high CTGF dose and slow TGFβ3 release are most effective for integrated healing of avascular meniscus, demonstrating improvements in alignment of collagen fibers, fibrocartilaginous matrix elaboration and mechanical properties. This study may represent an important step toward the development of a regenerative therapy to improve healing of avascular meniscus tears by stem cell recruitment. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 37:1555-1562, 2019.
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Affiliation(s)
- Solaiman Tarafder
- Regenerative Engineering Laboratory, Columbia University Irving Medical Center, 630 W. 168 St. — VC12-230, New York 10032, New York
| | - Joseph Gulko
- Regenerative Engineering Laboratory, Columbia University Irving Medical Center, 630 W. 168 St. — VC12-230, New York 10032, New York
| | - Daniel Kim
- Regenerative Engineering Laboratory, Columbia University Irving Medical Center, 630 W. 168 St. — VC12-230, New York 10032, New York
| | - Kun Hee Sim
- Regenerative Engineering Laboratory, Columbia University Irving Medical Center, 630 W. 168 St. — VC12-230, New York 10032, New York
| | - Shawn Gutman
- Regenerative Engineering Laboratory, Columbia University Irving Medical Center, 630 W. 168 St. — VC12-230, New York 10032, New York
| | - Jian Yang
- Department of Biomedical Engineering, The Pennsylvania State University, 205 Hallowell Building, University Park 16802-4400, Pennsylvania
| | - James L. Cook
- Thompson Laboratory for Regenerative Orthopaedics, Missouri Orthopaedic Institute, University of Missouri, 1100 Virginia Avenue, Columbia 65212, Missouri
| | - Chang H. Lee
- Regenerative Engineering Laboratory, Columbia University Irving Medical Center, 630 W. 168 St. — VC12-230, New York 10032, New York
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32
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Hu W, Wang Z, Xiao Y, Zhang S, Wang J. Advances in crosslinking strategies of biomedical hydrogels. Biomater Sci 2019; 7:843-855. [PMID: 30648168 DOI: 10.1039/c8bm01246f] [Citation(s) in RCA: 374] [Impact Index Per Article: 74.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Biomedical hydrogels as sole repair matrices or combined with pre-seeded cells and bioactive growth factors are extensively applied in tissue engineering and regenerative medicine. Hydrogels normally provide three dimensional structures for cell adhesion and proliferation or the controlled release of the loading of drugs or proteins. Various physiochemical properties of hydrogels endow them with distinct applications. In this review, we present the commonly used crosslinking method for hydrogel synthesis involving physical and chemical crosslinks and summarize their current progress and future perspectives.
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Affiliation(s)
- Weikang Hu
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan 430074, P. R. China.
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33
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Cipriani F, Ariño Palao B, Gonzalez de Torre I, Vega Castrillo A, Aguado Hernández HJ, Alonso Rodrigo M, Àlvarez Barcia AJ, Sanchez A, García Diaz V, Lopez Peña M, Rodriguez-Cabello JC. An elastin-like recombinamer-based bioactive hydrogel embedded with mesenchymal stromal cells as an injectable scaffold for osteochondral repair. Regen Biomater 2019; 6:335-347. [PMID: 31827887 PMCID: PMC6897338 DOI: 10.1093/rb/rbz023] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 04/17/2019] [Accepted: 04/19/2019] [Indexed: 01/21/2023] Open
Abstract
The aim of this study was to evaluate injectable, in situ cross-linkable elastin-like recombinamers (ELRs) for osteochondral repair. Both the ELR-based hydrogel alone and the ELR-based hydrogel embedded with rabbit mesenchymal stromal cells (rMSCs) were tested for the regeneration of critical subchondral defects in 10 New Zealand rabbits. Thus, cylindrical osteochondral defects were filled with an aqueous solution of ELRs and the animals sacrificed at 4 months for histological and gross evaluation of features of biomaterial performance, including integration, cellular infiltration, surrounding matrix quality and the new matrix in the defects. Although both approaches helped cartilage regeneration, the results suggest that the specific composition of the rMSC-containing hydrogel permitted adequate bone regeneration, whereas the ELR-based hydrogel alone led to an excellent regeneration of hyaline cartilage. In conclusion, the ELR cross-linker solution can be easily delivered and forms a stable well-integrated hydrogel that supports infiltration and de novo matrix synthesis.
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Affiliation(s)
- Filippo Cipriani
- Technical Proteins Nanobiotechnology S.L., Paseo Belén 9A, Valladolid 47011, Spain
| | - Blanca Ariño Palao
- Departamento de traumatología, Hospital Clínico de Valladolid, Av. Ramón y Cajal 3, Valladolid 47003, Spain
| | - Israel Gonzalez de Torre
- Technical Proteins Nanobiotechnology S.L., Paseo Belén 9A, Valladolid 47011, Spain.,Bioforge, University of Valladolid CIBER-BBN, Paseo de Belén 19, Valladolid 47011, Spain
| | - Aurelio Vega Castrillo
- Departamento de traumatología, Hospital Clínico de Valladolid, Av. Ramón y Cajal 3, Valladolid 47003, Spain
| | | | - Matilde Alonso Rodrigo
- Technical Proteins Nanobiotechnology S.L., Paseo Belén 9A, Valladolid 47011, Spain.,Bioforge, University of Valladolid CIBER-BBN, Paseo de Belén 19, Valladolid 47011, Spain
| | - Angel José Àlvarez Barcia
- SIBA-UVA: servicio investigación y bienestar animal, University of Valladolid, C/Plaza de Santa Cruz 8, Valladolid 47002, Spain
| | - Ana Sanchez
- Instituto de Biología y Genética Molecular (IBGM), Universidad de Valladolid y CSIC, Calle Sanz y Fores 3, Valladolid 47003, Spain
| | - Verónica García Diaz
- Instituto de Biología y Genética Molecular (IBGM), Universidad de Valladolid y CSIC, Calle Sanz y Fores 3, Valladolid 47003, Spain
| | - Monica Lopez Peña
- Facultad de veterinaria, Campus Universitario, Avda. Carballo Calero s/n, Lugo 27002, Spain
| | - José Carlos Rodriguez-Cabello
- Technical Proteins Nanobiotechnology S.L., Paseo Belén 9A, Valladolid 47011, Spain.,Bioforge, University of Valladolid CIBER-BBN, Paseo de Belén 19, Valladolid 47011, Spain
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Tamburaci S, Cecen B, Ustun O, Ergur BU, Havitcioglu H, Tihminlioglu F. Production and Characterization of a Novel Bilayer Nanocomposite Scaffold Composed of Chitosan/Si-nHap and Zein/POSS Structures for Osteochondral Tissue Regeneration. ACS APPLIED BIO MATERIALS 2019; 2:1440-1455. [DOI: 10.1021/acsabm.8b00700] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Sedef Tamburaci
- Graduate Program of Biotechnology and Bioengineering, Gulbahce Campus, İzmir Institute of Technology, Urla, İzmir 35430, Turkey
- Department of Chemical Engineering, Gulbahce Campus, İzmir Institute of Technology, Urla, İzmir 35430, Turkey
| | - Berivan Cecen
- Department of Biomechanics, Institute of Health Science, Inciralti Health Campus, Dokuz Eylul University, İzmir 35220, Turkey
| | - Ozcan Ustun
- Faculty of Medicine, Basic Medical Sciences, Histology and Embryology, Inciralti Health Campus, Dokuz Eylul University, İzmir 35220, Turkey
| | - Bekir Ugur Ergur
- Faculty of Medicine, Basic Medical Sciences, Histology and Embryology, Inciralti Health Campus, Dokuz Eylul University, İzmir 35220, Turkey
| | - Hasan Havitcioglu
- Department of Biomechanics, Institute of Health Science, Inciralti Health Campus, Dokuz Eylul University, İzmir 35220, Turkey
| | - Funda Tihminlioglu
- Department of Chemical Engineering, Gulbahce Campus, İzmir Institute of Technology, Urla, İzmir 35430, Turkey
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Liu J, Wang X, Lu G, Tang JZ, Wang Y, Zhang B, Sun Y, Lin H, Wang Q, Liang J, Fan Y, Zhang X. Bionic cartilage acellular matrix microspheres as a scaffold for engineering cartilage. J Mater Chem B 2019; 7:640-650. [DOI: 10.1039/c8tb02999g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Bionic cartilage acellular matrix microspheres (BCAMMs) made from decelluarized bionic cartilage microspheres (BCMs).
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Bittner SM, Guo JL, Mikos AG. Spatiotemporal Control of Growth Factors in Three-Dimensional Printed Scaffolds. BIOPRINTING (AMSTERDAM, NETHERLANDS) 2018; 12:e00032. [PMID: 31106279 PMCID: PMC6519969 DOI: 10.1016/j.bprint.2018.e00032] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Three-dimensional printing (3DP) has enabled the fabrication of tissue engineering scaffolds that recapitulate the physical, architectural, and biochemical cues of native tissue matrix more effectively than ever before. One key component of biomimetic scaffold fabrication is the patterning of growth factors, whose spatial distribution and temporal release profile should ideally match that seen in native tissue development. Tissue engineers have made significant progress in improving the degree of spatiotemporal control over which growth factors are presented within 3DP scaffolds. However, significant limitations remain in terms in pattern resolution, the fabrication of true gradients, temporal control of growth factor release, the maintenance of growth factor distributions against diffusion, and more. This review summarizes several key areas for advancement of the field in terms of improving spatiotemporal control over growth factor presentation, and additionally highlights several major tissues of interest that have been targeted by 3DP growth factor patterning strategies.
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Affiliation(s)
- Sean M. Bittner
- Department of Bioengineering, Rice University, Houston, TX, United States
- Center for Engineering Complex Tissues, United States
| | - Jason L. Guo
- Department of Bioengineering, Rice University, Houston, TX, United States
| | - Antonios G. Mikos
- Department of Bioengineering, Rice University, Houston, TX, United States
- Center for Engineering Complex Tissues, United States
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Bittner SM, Guo JL, Melchiorri A, Mikos AG. Three-dimensional Printing of Multilayered Tissue Engineering Scaffolds. MATERIALS TODAY (KIDLINGTON, ENGLAND) 2018; 21:861-874. [PMID: 30450010 PMCID: PMC6233733 DOI: 10.1016/j.mattod.2018.02.006] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The field of tissue engineering has produced new therapies for the repair of damaged tissues and organs, utilizing biomimetic scaffolds that mirror the mechanical and biological properties of host tissue. The emergence of three-dimensional printing (3DP) technologies has enabled the fabrication of highly complex scaffolds which offer a more accurate replication of native tissue properties and architecture than previously possible. Of strong interest to tissue engineers is the construction of multilayered scaffolds that target distinct regions of complex tissues. Musculoskeletal and dental tissues in particular, such as the osteochondral unit and periodontal complex, are composed of multiple interfacing tissue types, and thus benefit from the usage of multilayered scaffold fabrication. Traditional 3DP technologies such as extrusion printing and selective laser sintering have been used for the construction of scaffolds with gradient architectures and mixed material compositions. Additionally, emerging bioprinting strategies have been used for the direct printing and spatial patterning of cells and chemical factors, capturing the complex organization found in the body. To better replicate the varied and gradated properties of larger tissues, researchers have created scaffolds composed of multiple materials spanning natural polymers, synthetic polymers, and ceramics. By utilizing high precision 3DP techniques and judicious material selection, scaffolds can thus be designed to address the regeneration of previously challenging musculoskeletal, dental, and other heterogeneous target tissues. These multilayered 3DP strategies show great promise in the future of tissue engineering.
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Affiliation(s)
- Sean M Bittner
- Department of Bioengineering, Rice University, Houston, TX
- Center for Engineering Complex Tissues
| | - Jason L Guo
- Department of Bioengineering, Rice University, Houston, TX
| | - Anthony Melchiorri
- Department of Bioengineering, Rice University, Houston, TX
- Center for Engineering Complex Tissues
| | - Antonios G Mikos
- Department of Bioengineering, Rice University, Houston, TX
- Center for Engineering Complex Tissues
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Kim S, Kim J, Gajendiran M, Yoon M, Hwang MP, Wang Y, Kang BJ, Kim K. Enhanced Skull Bone Regeneration by Sustained Release of BMP-2 in Interpenetrating Composite Hydrogels. Biomacromolecules 2018; 19:4239-4249. [DOI: 10.1021/acs.biomac.8b01013] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Sungjun Kim
- Division of Bioengineering, College of Life Sciences and Bioengineering, Incheon National University, Incheon, 22012 Korea
| | - Junhyung Kim
- Department of Veterinary Surgery, College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
| | - Mani Gajendiran
- Division of Bioengineering, College of Life Sciences and Bioengineering, Incheon National University, Incheon, 22012 Korea
| | - Minhyuk Yoon
- Division of Bioengineering, College of Life Sciences and Bioengineering, Incheon National University, Incheon, 22012 Korea
| | - Mintai P. Hwang
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14850, United States
| | - Yadong Wang
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14850, United States
| | - Byung-Jae Kang
- Department of Veterinary Surgery, College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
| | - Kyobum Kim
- Division of Bioengineering, College of Life Sciences and Bioengineering, Incheon National University, Incheon, 22012 Korea
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Zhu X, Chen T, Feng B, Weng J, Duan K, Wang J, Lu X. Biomimetic Bacterial Cellulose-Enhanced Double-Network Hydrogel with Excellent Mechanical Properties Applied for the Osteochondral Defect Repair. ACS Biomater Sci Eng 2018; 4:3534-3544. [DOI: 10.1021/acsbiomaterials.8b00682] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xiangbo Zhu
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P.R. China
| | - Taijun Chen
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P.R. China
| | - Bo Feng
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P.R. China
| | - Jie Weng
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P.R. China
| | - Ke Duan
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P.R. China
| | - Jianxin Wang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P.R. China
| | - Xiaobo Lu
- Department of Bone and Joint Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
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Rowland CR, Glass KA, Ettyreddy AR, Gloss CC, Matthews JRL, Huynh NPT, Guilak F. Regulation of decellularized tissue remodeling via scaffold-mediated lentiviral delivery in anatomically-shaped osteochondral constructs. Biomaterials 2018; 177:161-175. [PMID: 29894913 PMCID: PMC6082159 DOI: 10.1016/j.biomaterials.2018.04.049] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 04/17/2018] [Accepted: 04/24/2018] [Indexed: 01/25/2023]
Abstract
Cartilage-derived matrix (CDM) has emerged as a promising scaffold material for tissue engineering of cartilage and bone due to its native chondroinductive capacity and its ability to support endochondral ossification. Because it consists of native tissue, CDM can undergo cellular remodeling, which can promote integration with host tissue and enables it to be degraded and replaced by neotissue over time. However, enzymatic degradation of decellularized tissues can occur unpredictably and may not allow sufficient time for mechanically competent tissue to form, especially in the harsh inflammatory environment of a diseased joint. The goal of the current study was to engineer cartilage and bone constructs with the ability to inhibit aberrant inflammatory processes caused by the cytokine interleukin-1 (IL-1), through scaffold-mediated delivery of lentiviral particles containing a doxycycline-inducible IL-1 receptor antagonist (IL-1Ra) transgene on anatomically-shaped CDM constructs. Additionally, scaffold-mediated lentiviral gene delivery was used to facilitate spatial organization of simultaneous chondrogenic and osteogenic differentiation via site-specific transduction of a single mesenchymal stem cell (MSC) population to overexpress either chondrogenic, transforming growth factor-beta 3 (TGF-β3), or osteogenic, bone morphogenetic protein-2 (BMP-2), transgenes. Controlled induction of IL-1Ra expression protected CDM hemispheres from inflammation-mediated degradation, and supported robust bone and cartilage tissue formation even in the presence of IL-1. In the absence of inflammatory stimuli, controlled cellular remodeling was exploited as a mechanism for fusing concentric CDM hemispheres overexpressing BMP-2 and TGF-β3 into a single bi-layered osteochondral construct. Our findings demonstrate that site-specific delivery of inducible and tunable transgenes confers spatial and temporal control over both CDM scaffold remodeling and neotissue composition. Furthermore, these constructs provide a microphysiological in vitro joint organoid model with site-specific, tunable, and inducible protein delivery systems for examining the spatiotemporal response to pro-anabolic and/or inflammatory signaling across the osteochondral interface.
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Affiliation(s)
- Christopher R Rowland
- Washington University in Saint Louis, Saint Louis, MO 63110, USA; Shriners Hospitals for Children - St. Louis, St. Louis, MO 63110, USA
| | | | | | - Catherine C Gloss
- Washington University in Saint Louis, Saint Louis, MO 63110, USA; Shriners Hospitals for Children - St. Louis, St. Louis, MO 63110, USA
| | - Jared R L Matthews
- Washington University in Saint Louis, Saint Louis, MO 63110, USA; Shriners Hospitals for Children - St. Louis, St. Louis, MO 63110, USA
| | - Nguyen P T Huynh
- Washington University in Saint Louis, Saint Louis, MO 63110, USA; Shriners Hospitals for Children - St. Louis, St. Louis, MO 63110, USA; Duke University, Durham, NC 27710, USA
| | - Farshid Guilak
- Washington University in Saint Louis, Saint Louis, MO 63110, USA; Shriners Hospitals for Children - St. Louis, St. Louis, MO 63110, USA.
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Singh YP, Moses JC, Bhardwaj N, Mandal BB. Injectable hydrogels: a new paradigm for osteochondral tissue engineering. J Mater Chem B 2018; 6:5499-5529. [PMID: 32254962 DOI: 10.1039/c8tb01430b] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Osteochondral tissue engineering has become a promising strategy for repairing focal chondral lesions and early osteoarthritis (OA), which account for progressive joint pain and disability in millions of people worldwide. Towards improving osteochondral tissue repair, injectable hydrogels have emerged as promising matrices due to their wider range of properties such as their high water content and porous framework, similarity to the natural extracellular matrix (ECM), ability to encapsulate cells within the matrix and ability to provide biological cues for cellular differentiation. Further, their properties such as those that facilitate minimally invasive deployment or delivery, and their ability to repair geometrically complex irregular defects have been critical for their success. In this review, we provide an overview of innovative approaches to engineer injectable hydrogels towards improved osteochondral tissue repair. Herein, we focus on understanding the biology of osteochondral tissue and osteoarthritis along with the need for injectable hydrogels in osteochondral tissue engineering. Furthermore, we discuss in detail different biomaterials (natural and synthetic) and various advanced fabrication methods being employed for the development of injectable hydrogels in osteochondral repair. In addition, in vitro and in vivo applications of developed injectable hydrogels for osteochondral tissue engineering are also reviewed. Finally, conclusions and future perspectives of using injectable hydrogels in osteochondral tissue engineering are provided.
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Affiliation(s)
- Yogendra Pratap Singh
- Biomaterial and Tissue Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati-781039, Assam, India.
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Shi R, Huang Y, Ma C, Wu C, Tian W. Current advances for bone regeneration based on tissue engineering strategies. Front Med 2018; 13:160-188. [PMID: 30047029 DOI: 10.1007/s11684-018-0629-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 12/14/2017] [Indexed: 01/07/2023]
Abstract
Bone tissue engineering (BTE) is a rapidly developing strategy for repairing critical-sized bone defects to address the unmet need for bone augmentation and skeletal repair. Effective therapies for bone regeneration primarily require the coordinated combination of innovative scaffolds, seed cells, and biological factors. However, current techniques in bone tissue engineering have not yet reached valid translation into clinical applications because of several limitations, such as weaker osteogenic differentiation, inadequate vascularization of scaffolds, and inefficient growth factor delivery. Therefore, further standardized protocols and innovative measures are required to overcome these shortcomings and facilitate the clinical application of these techniques to enhance bone regeneration. Given the deficiency of comprehensive studies in the development in BTE, our review systematically introduces the new types of biomimetic and bifunctional scaffolds. We describe the cell sources, biology of seed cells, growth factors, vascular development, and the interactions of relevant molecules. Furthermore, we discuss the challenges and perspectives that may propel the direction of future clinical delivery in bone regeneration.
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Affiliation(s)
- Rui Shi
- Institute of Traumatology and Orthopaedics, Beijing Laboratory of Biomedical Materials, Beijing Jishuitan Hospital, Beijing, 100035, China
| | - Yuelong Huang
- Department of Spine Surgery of Beijing Jishuitan Hospital, The Fourth Clinical Medical College of Peking University, Beijing, 100035, China
| | - Chi Ma
- Institute of Traumatology and Orthopaedics, Beijing Laboratory of Biomedical Materials, Beijing Jishuitan Hospital, Beijing, 100035, China
| | - Chengai Wu
- Institute of Traumatology and Orthopaedics, Beijing Laboratory of Biomedical Materials, Beijing Jishuitan Hospital, Beijing, 100035, China
| | - Wei Tian
- Institute of Traumatology and Orthopaedics, Beijing Laboratory of Biomedical Materials, Beijing Jishuitan Hospital, Beijing, 100035, China. .,Department of Spine Surgery of Beijing Jishuitan Hospital, The Fourth Clinical Medical College of Peking University, Beijing, 100035, China.
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Engineered Co-culture Strategies Using Stem Cells for Facilitated Chondrogenic Differentiation and Cartilage Repair. BIOTECHNOL BIOPROC E 2018. [DOI: 10.1007/s12257-018-0149-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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44
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da Silva Morais A, Oliveira JM, Reis RL. Small Animal Models. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1059:423-439. [DOI: 10.1007/978-3-319-76735-2_19] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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45
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Micro/Nano Scaffolds for Osteochondral Tissue Engineering. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1058:125-139. [PMID: 29691820 DOI: 10.1007/978-3-319-76711-6_6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
To develop an osteochondral tissue regeneration strategy it is extremely important to take into account the multiscale organization of the natural extracellular matrix. The structure and gradients of organic and inorganic components present in the cartilage and bone tissues must be considered together. Another critical aspect is an efficient interface between both tissues. So far, most of the approaches were focused on the development of multilayer or stratified scaffolds which resemble the structural composition of bone and cartilage, not considering in detail a transitional interface layer. Typically, those scaffolds have been produced by the combined use of two or more processing techniques (microtechnologies and nanotechnologies) and materials (organic and inorganic). A significant number of works was focused on either cartilage or bone, but there is a growing interest in the development of the osteochondral interface and in tissue engineering models of composite constructs that can mimic the cartilage/bone tissues. The few works that give attention to the interface between cartilage and bone, as well as to the biochemical gradients observed at the osteochondral unit, are also herein described.
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Cho H, Lee A, Kim K. The effect of serum types on Chondrogenic differentiation of adipose-derived stem cells. Biomater Res 2018; 22:6. [PMID: 29556415 PMCID: PMC5845156 DOI: 10.1186/s40824-018-0116-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 02/14/2018] [Indexed: 11/30/2022] Open
Abstract
Background Fetal bovine serum (FBS) is the most essential supplement in culture media for cellular proliferation, metabolism, and differentiation. However, due to a limited supply and subsequently rising prices, a series of studies have investigated a biological feasibility of replaceable serums to substitute FBS. Along with the increasing interests to manufacture stem cell-based cellular products, optimizing the composition of culture media including serums and exogenous growth factors (GFs) is of importance. In this experiment, the effect of bovine serum (BS) and newborn calf serum (NCS) on proliferation and chondrogenic differentiation capacity of human adipose derived stem cells (ADSCs) was evaluated, especially in the chondrogenically supplemented culture condition. Methods ADSCs were chondrogenically cultured with FBS, BS, and NCS for 14 days. For the acceleration of in vitro chondrogenesis, exogenous insulin-like growth factor and transforming growth factor-β3 were added. Viability and proliferation of ADSCs were evaluated using Live/Dead fluorescence staining and DNA amount, respectively. To investigate a chondrogenic differentiation, a series of assays were performed including a quantification of glycosaminoglycan deposition, alcian blue staining, and RT-PCR analysis for type II collagen, aggrecan and Sox-9 genes. Results The results demonstrated that proliferation of ADSCs was facilitated in FBS condition as compared with other serum types. For chondrogenic marker gene expression, serum substitutes enhanced Sox-9 expression level on day 14. The deposition of glycosaminoglycan was more facilitated in BS condition regardless of additional chondrogenic GFs. Conclusion It could be presumably speculated that serum types and exogenous supplements of GFs could also be important parameters to optimize culture media composition, especially in order to maintain the enhanced levels of both proliferation and chondrogenic differentiation of ADSCs during expansion.
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Affiliation(s)
- Hyeran Cho
- Division of Bioengineering, College of Life Sciences and Bioengineering, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon, 22012 South Korea
| | - Aeri Lee
- Division of Bioengineering, College of Life Sciences and Bioengineering, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon, 22012 South Korea
| | - Kyobum Kim
- Division of Bioengineering, College of Life Sciences and Bioengineering, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon, 22012 South Korea
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Pugliese E, Coentro JQ, Zeugolis DI. Advancements and Challenges in Multidomain Multicargo Delivery Vehicles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1704324. [PMID: 29446161 DOI: 10.1002/adma.201704324] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 11/05/2017] [Indexed: 06/08/2023]
Abstract
Reparative and regenerative processes are well-orchestrated temporal and spatial events that are governed by multiple cells, molecules, signaling pathways, and interactions thereof. Yet again, currently available implantable devices fail largely to recapitulate nature's complexity and sophistication in this regard. Herein, success stories and challenges in the field of layer-by-layer, composite, self-assembly, and core-shell technologies are discussed for the development of multidomain/multicargo delivery vehicles.
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Affiliation(s)
- Eugenia Pugliese
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Ireland
- Science Foundation Ireland (SFI), Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Ireland
| | - João Q Coentro
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Ireland
- Science Foundation Ireland (SFI), Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Ireland
| | - Dimitrios I Zeugolis
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Ireland
- Science Foundation Ireland (SFI), Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Ireland
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Kishan A, Walker T, Sears N, Wilems T, Cosgriff-Hernandez E. Winner of the society for biomaterials student award in the Ph.D. category for the annual meeting of the society for biomaterials, april 11-14, 2018, Atlanta, GA: Development of a bimodal, in situ crosslinking method to achieve multifactor release from el. J Biomed Mater Res A 2018; 106:1155-1164. [DOI: 10.1002/jbm.a.36342] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 01/10/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Alysha Kishan
- Department of Biomedical Engineering; Texas A&M University; College Station Texas 77843
| | - Taneidra Walker
- Department of Biomedical Engineering; The University of Texas at Austin; Austin Texas 78712
| | - Nick Sears
- Department of Biomedical Engineering; Texas A&M University; College Station Texas 77843
| | - Thomas Wilems
- Department of Biomedical Engineering; The University of Texas at Austin; Austin Texas 78712
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Park J, Kim S, Kim K. Bone morphogenetic protein-2 associated multiple growth factor delivery for bone tissue regeneration. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2018. [DOI: 10.1007/s40005-017-0382-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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50
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Pereira DR, Reis RL, Oliveira JM. Layered Scaffolds for Osteochondral Tissue Engineering. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1058:193-218. [DOI: 10.1007/978-3-319-76711-6_9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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