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Fang Z, Liu G, Wang B, Meng H, Bahatibieke A, Li J, Ma M, Peng J, Zheng Y. An injectable self-healing alginate hydrogel with desirable mechanical and degradation properties for enhancing osteochondral regeneration. Carbohydr Polym 2024; 343:122424. [PMID: 39174114 DOI: 10.1016/j.carbpol.2024.122424] [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: 12/18/2023] [Revised: 06/14/2024] [Accepted: 06/20/2024] [Indexed: 08/24/2024]
Abstract
Articular cartilage and subchondral bone defects have always been problematic because the osteochondral tissue plays a crucial role in the movement of the body and does not recover spontaneously. Here, an injectable hydrogel composed of oxidized sodium alginate/gelatin/chondroitin sulfate (OSAGC) was designed for the minimally invasive treatment and promotion of osteochondral regeneration. The OSAGC hydrogel had a double network based on dynamic covalent bonds, demonstrating commendable injectability and self-healing properties. Chondroitin sulfate was organically bound to the hydrogel network, retaining its own activity and gradually releasing during the degradation process as well as improving mechanical properties. The compressive strength could be increased up to 3 MPa by regulating the concentration of chondroitin sulphate and the oxidation level, and this mechanical stimulation could help repair injured tissue. The OSAGC hydrogel had a favourable affinity to articular cartilage and was able to release active ingredients in a sustained manner over 3 months. The OSAGC showed no cytotoxic effects. Results from animal studies demonstrated its capacity to regenerate new bone tissue in four weeks and new cartilage tissue in twelve weeks. The OSAGC hydrogel represented a promising approach to simplify bone surgery and repair damaged osteochondral tissue.
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Affiliation(s)
- Ziyuan Fang
- School of Material Science and Engineering, University of Science and Technology Beijing, Beijing, China
| | - Guodong Liu
- School of Material Science and Engineering, University of Science and Technology Beijing, Beijing, China
| | - Bingxuan Wang
- Institute of Orthopaedics, Chinese PLA General Hospital, Beijing, China; Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Haoye Meng
- Institute of Orthopaedics, Chinese PLA General Hospital, Beijing, China; Beijing Key Lab of Regenerative Medicine in Orthopaedics, Beijing, China.
| | - Abudureheman Bahatibieke
- School of Material Science and Engineering, University of Science and Technology Beijing, Beijing, China
| | - JunFei Li
- School of Material Science and Engineering, University of Science and Technology Beijing, Beijing, China
| | - Mengjiao Ma
- School of Material Science and Engineering, University of Science and Technology Beijing, Beijing, China
| | - Jiang Peng
- Institute of Orthopaedics, Chinese PLA General Hospital, Beijing, China
| | - Yudong Zheng
- School of Material Science and Engineering, University of Science and Technology Beijing, Beijing, China.
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Younus ZM, Ahmed I, Roach P, Forsyth NR. A phosphate glass reinforced composite acrylamide gradient scaffold for osteochondral interface regeneration. BIOMATERIALS AND BIOSYSTEMS 2024; 15:100099. [PMID: 39221155 PMCID: PMC11364006 DOI: 10.1016/j.bbiosy.2024.100099] [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: 02/27/2024] [Revised: 07/12/2024] [Accepted: 07/20/2024] [Indexed: 09/04/2024] Open
Abstract
The bone-cartilage interface is defined by a unique arrangement of cells and tissue matrix. Injury to the interface can contribute to the development of arthritic joint disease. Attempts to repair osteochondral damage through clinical trials have generated mixed outcomes. Tissue engineering offers the potential of integrated scaffold design with multiregional architecture to assist in tissue regeneration, such as the bone-cartilage interface. Challenges remain in joining distinct materials in a single scaffold mass while maintaining integrity and avoiding delamination. The aim of the current work is to examine the possibility of joining two closely related acrylamide derivatives such as, poly n-isopropyl acrylamide (pNIPAM) and poly n‑tert‑butyl acrylamide (pNTBAM). The target is to produce a single scaffold unit with distinct architectural regions in the favour of regenerating the osteochondral interface. Longitudinal phosphate glass fibres (PGFs) with the formula 50P2O5.30CaO.20Na2O were incorporated to provide additional bioactivity by degradation to release ions such as calcium and phosphate which are considered valuable to assist the mineralization process. Polymers were prepared via atom transfer radical polymerization (ATRP) and solutions cast to ensure the integration of polymers chains. Scaffold was characterized using scanning electron microscope (SEM) and Fourier transform infra-red (FTIR) techniques. The PGF mass degradation pattern was inspected using micro computed tomography (µCT). Biological assessment of primary human osteoblasts (hOBs) and primary human chondrocytes (hCHs) upon scaffolds was performed using alizarin red and colorimetric calcium assay for mineralization assessment; alcian blue staining and dimethyl-methylene blue (DMMB) assay for glycosaminoglycans (GAGs); immunostaining and enzyme-linked immunosorbent assay (ELISA) to detect functional proteins expression by cells such as collagen I, II, and annexin A2. FTIR analysis revealed an intact unit with gradual transformation from pNIPAM to pNTBAM. SEM images showed three distinct architectural regions with mean pore diameter of 54.5 µm (pNIPAM), 16.5 µm (pNTBAM) and 118 µm at the mixed interface. Osteogenic and mineralization potential by cells was observed upon the entire scaffold's regions. Chondrogenic activity was relevant on the pNTBAM side of the scaffold only with minimal evidence in the pNIPAM region. PGFs increased mineralization potential of both hOBs and hCHs, evidenced by elevated collagens I, X, and annexin A2 with reduction of collagen II in PGFs scaffolds. In conclusion, pNIPAM and pNTBAM integration created a multiregional scaffold with distinct architectural regions. Differential chondrogenic, osteogenic, and mineralized cell performance, in addition to the impact of PGF, suggests a potential role for phosphate glass-incorporated, acrylamide-derivative scaffolds in osteochondral interface regeneration.
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Affiliation(s)
- Zaid M. Younus
- School of Pharmacy and Bioengineering, Keele University, Keele, UK
- College of Pharmacy, University of Mosul, Mosul, Iraq
| | - Ifty Ahmed
- Faculty of Engineering, Advanced Materials Research Group, University of Nottingham, Nottingham, UK
| | - Paul Roach
- Department of Chemistry, School of Science, Loughborough University, Leicestershire, UK
| | - Nicholas R. Forsyth
- School of Pharmacy and Bioengineering, Keele University, Keele, UK
- Vice principals’ office, King's College, University of Aberdeen, Aberdeen, AB24 3FX, UK
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Parasuraman G, Amirtham SM, Francis DV, Livingston A, Ramasamy B, Sathishkumar S, Vinod E. Evaluation of Chondral Defect Repair Using Human Fibronectin Adhesion Assay-Derived Chondroprogenitors Suspended in Lyophilized Fetal Collagen Scaffold: An Ex Vivo Osteochondral Unit Model Study. Indian J Orthop 2024; 58:991-1000. [PMID: 39087036 PMCID: PMC11286923 DOI: 10.1007/s43465-024-01192-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 05/22/2024] [Indexed: 08/02/2024]
Abstract
Introduction Chondral defect repair is challenging due to a scarcity of reparative cells and the need to fill a large surface area, compounded by the absence of self-healing mechanisms. Fibronectin adhesion assay-derived chondroprogenitors (FAA-CPs) have emerged as a promising alternative with enhanced chondrogenic ability and reduced hypertrophy. De-cellularized bio-scaffolds are reported to act as extracellular matrix, mimicking the structural and functional characteristics of native tissue, thereby facilitating cell attachment and differentiation. This study primarily assessed the synergistic effect of FAA-CPs suspended in fetal cartilage-derived collagen-containing scaffolds in repairing chondral defects. Methodology The de-cellularized and lyophilized fetal collagen was prepared from the tibio-femoral joint of a 36 + 4-week gestational age fetus. FAA-CPs were isolated from osteoarthritic cartilage samples (n = 3) and characterized. In ex vivo analysis, FAA-CPs at a density of 1 × 106 cells were suspended in the lyophilized scaffold and placed into the chondral defects created in the Osteochondral Units and harvested on the 35th day for histological examination. Results The lyophilized scaffold of de-cellularized fetal cartilage with FAA-CPs demonstrated effective healing of the critical size chondral defect. This was evidenced by a uniform distribution of cells, a well-organized collagen-fibrillar network, complete filling of the defect with alignment to the surface, and favorable integration with the adjacent cartilage. However, these effects were less pronounced in the plain scaffold control group and no demonstrable repair observed in the empty defect group. Conclusion This study suggests the synergistic potential of FAA-CPs and collagen scaffold for chondral repair which needs to be further explored for clinical therapy. Supplementary Information The online version contains supplementary material available at 10.1007/s43465-024-01192-6.
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Affiliation(s)
- Ganesh Parasuraman
- Centre for Stem Cell Research, (A Unit of InStem, Bengaluru), Christian Medical College, Vellore, India
| | - Soosai Manickam Amirtham
- Department of Physiology/Centre for Stem Cell Research, Christian Medical College, Vellore, India
| | | | - Abel Livingston
- Department of Orthopaedics, Christian Medical College, Vellore, India
| | - Boopalan Ramasamy
- Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, Australia
- Department of Orthopaedics and Trauma, Royal Adelaide Hospital, Adelaide, Australia
| | - Solomon Sathishkumar
- Department of Physiology/Centre for Stem Cell Research, Christian Medical College, Vellore, India
| | - Elizabeth Vinod
- Centre for Stem Cell Research, (A Unit of InStem, Bengaluru), Christian Medical College, Vellore, India
- Department of Physiology/Centre for Stem Cell Research, Christian Medical College, Vellore, India
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Cheng JH, Jhan SW, Chen PC, Hsu SL, Wang CJ, Moya D, Wu YN, Huang CY, Chou WY, Wu KT. Enhancement of hyaline cartilage and subchondral bone regeneration in a rat osteochondral defect model through focused extracorporeal shockwave therapy. Bone Joint Res 2024; 13:342-352. [PMID: 38977271 PMCID: PMC11311209 DOI: 10.1302/2046-3758.137.bjr-2023-0264.r2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/10/2024] Open
Abstract
Aims To explore the efficacy of extracorporeal shockwave therapy (ESWT) in the treatment of osteochondral defect (OCD), and its effects on the levels of transforming growth factor (TGF)-β, bone morphogenetic protein (BMP)-2, -3, -4, -5, and -7 in terms of cartilage and bone regeneration. Methods The OCD lesion was created on the trochlear groove of left articular cartilage of femur per rat (40 rats in total). The experimental groups were Sham, OCD, and ESWT (0.25 mJ/mm2, 800 impulses, 4 Hz). The animals were euthanized at 2, 4, 8, and 12 weeks post-treatment, and histopathological analysis, micro-CT scanning, and immunohistochemical staining were performed for the specimens. Results In the histopathological analysis, the macro-morphological grading scale showed a significant increase, while the histological score and cartilage repair scale of ESWT exhibited a significant decrease compared to OCD at the 8- and 12-week timepoints. At the 12-week follow-up, ESWT exhibited a significant improvement in the volume of damaged bone compared to OCD. Furthermore, immunohistochemistry analysis revealed a significant decrease in type I collagen and a significant increase in type II collagen within the newly formed hyaline cartilage following ESWT, compared to OCD. Finally, SRY-box transcription factor 9 (SOX9), aggrecan, and TGF-β, BMP-2, -3, -4, -5, and -7 were significantly higher in ESWT than in OCD at 12 weeks. Conclusion ESWT promoted the effect of TGF-β/BMPs, thereby modulating the production of extracellular matrix proteins and transcription factor involved in the regeneration of articular cartilage and subchondral bone in an OCD rat model.
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Affiliation(s)
- Jai-Hong Cheng
- Center for Shockwave Medicine and Tissue Engineering, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
- Department of Medical Research, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
- Department of Leisure and Sports Management, Cheng Shiu University, Kaohsiung, Taiwan
| | - Shun-Wun Jhan
- Center for Shockwave Medicine and Tissue Engineering, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
- Department of Orthopedic Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Po-Cheng Chen
- Department of Physical Medicine and Rehabilitation, Kaohsiung Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Kaohsiung, Taiwan
| | - Shan-Ling Hsu
- Center for Shockwave Medicine and Tissue Engineering, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
- Department of Orthopedic Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Ching-Jen Wang
- Center for Shockwave Medicine and Tissue Engineering, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
- Department of Orthopedic Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Daniel Moya
- Buenos Aires British Hospital, Buenos Aires, Argentina
| | - Yi-No Wu
- School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Chien-Yiu Huang
- Center for Shockwave Medicine and Tissue Engineering, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
- Department of Medical Research, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Wen-Yi Chou
- Center for Shockwave Medicine and Tissue Engineering, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
- Department of Orthopedic Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Kuan-Ting Wu
- Center for Shockwave Medicine and Tissue Engineering, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
- Department of Orthopedic Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
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Choe RH, Kuzemchak BC, Kotsanos GJ, Mirdamadi E, Sherry M, Devoy E, Lowe T, Packer JD, Fisher JP. Designing Biomimetic 3D-Printed Osteochondral Scaffolds for Enhanced Load-Bearing Capacity. Tissue Eng Part A 2024; 30:409-420. [PMID: 38481121 DOI: 10.1089/ten.tea.2023.0217] [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] [Indexed: 04/19/2024] Open
Abstract
Osteoarthritis is a debilitating chronic joint disorder that affects millions of people worldwide. Since palliative and surgical treatments cannot completely regenerate hyaline cartilage within the articulating joint, osteochondral (OC) tissue engineering has been explored to heal OC defects. Utilizing computational simulations and three-dimensional (3D) printing, we aimed to build rationale around fabricating OC scaffolds with enhanced biomechanics. First, computational simulations revealed that interfacial fibrils within a bilayer alter OC scaffold deformation patterns by redirecting load-induced stresses toward the top of the cartilage layer. Principal component analysis revealed that scaffolds with 800 μm long fibrils (scaffolds 8A-8H) possessed optimal biomechanical properties to withstand compression and shear forces. While compression testing indicated that OC scaffolds with 800 μm fibrils did not have greater compressive moduli than other scaffolds, interfacial shear tests indicated that scaffold 8H possessed the greatest shear strength. Lastly, failure analysis demonstrated that yielding or buckling models describe interfacial fibril failure depending on fibril slenderness S. Specifically for scaffolds with packing density n = 6 and n = 8, the yielding failure model fits experimental loads with S < 10, while the buckling model fitted scaffolds with S < 10 slenderness. The research presented provides critical insights into designing 3D printed interfacial scaffolds with refined biomechanics toward improving OC tissue engineering outcomes.
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Affiliation(s)
- Robert H Choe
- Fischell Department of Bioengineering, University of Maryland, College Park, College Park, Maryland, USA
- Fischell Department of Bioengineering, Center for Engineering Complex Tissues, University of Maryland, College Park, College Park, Maryland, USA
| | - Blake C Kuzemchak
- Fischell Department of Bioengineering, University of Maryland, College Park, College Park, Maryland, USA
- Fischell Department of Bioengineering, Center for Engineering Complex Tissues, University of Maryland, College Park, College Park, Maryland, USA
| | - George J Kotsanos
- Fischell Department of Bioengineering, University of Maryland, College Park, College Park, Maryland, USA
- Fischell Department of Bioengineering, Center for Engineering Complex Tissues, University of Maryland, College Park, College Park, Maryland, USA
| | - Eman Mirdamadi
- Fischell Department of Bioengineering, University of Maryland, College Park, College Park, Maryland, USA
- Department of Oral and Maxillofacial Surgery, University of Maryland School of Dentistry, Baltimore, Maryland, USA
| | - Mary Sherry
- Fischell Department of Bioengineering, University of Maryland, College Park, College Park, Maryland, USA
- Fischell Department of Bioengineering, Center for Engineering Complex Tissues, University of Maryland, College Park, College Park, Maryland, USA
| | - Eoin Devoy
- Fischell Department of Bioengineering, University of Maryland, College Park, College Park, Maryland, USA
- Fischell Department of Bioengineering, Center for Engineering Complex Tissues, University of Maryland, College Park, College Park, Maryland, USA
| | - Tao Lowe
- Fischell Department of Bioengineering, University of Maryland, College Park, College Park, Maryland, USA
- Department of Oral and Maxillofacial Surgery, University of Maryland School of Dentistry, Baltimore, Maryland, USA
| | - Jonathan D Packer
- Department of Orthopedics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - John P Fisher
- Fischell Department of Bioengineering, University of Maryland, College Park, College Park, Maryland, USA
- Fischell Department of Bioengineering, Center for Engineering Complex Tissues, University of Maryland, College Park, College Park, Maryland, USA
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Li M, Teng M, Mao G, Sun Y, Liu S, Li R, Wang X, Qiu Y. PUD@HA/PEEK Scaffold Induces Subchondral Bone Regeneration to Repair Osteochondral Defect in Rabbits. ACS Biomater Sci Eng 2024; 10:1006-1017. [PMID: 38252806 DOI: 10.1021/acsbiomaterials.3c01352] [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] [Indexed: 01/24/2024]
Abstract
Osteochondral defects (OCDs) pose a significant challenge in clinical practice, and recent advancements in their repair indicate that satisfying subchondral bone repair may be critical for this. Herein, a series of hydroxyapatite/poly(ether ether ketone) (HA/PEEK) scaffolds were fabricated with varying mass percentages (0, 20, 30, and 40%) to induce subchondral bone regeneration. Subsequently, an optimal scaffold with 40% HA/PEEK was selected to establish osteochondral scaffolds with poly(ether urethane) urea-Danshensu (PUD) for repairing the OCD. The material characteristics of HA/PEEK and PUD were investigated using scanning electron microscopy, tensile, swelling, and fatigue tests, and cytological experiments. The effects of serial HA/PEEK scaffolds on subchondral bone repair were then assessed by using microcomputed tomography, hard tissue slicing, and histological staining. Furthermore, the optimal 40% HA/PEEK scaffold was used to develop osteochondral scaffolds with PUD to observe the effect on the OCD repair. HA/PEEK materials exhibited an even HA distribution in PEEK. However, when composited with HA, PEEK exhibited inferior mechanical strength. 40%HA/PEEK scaffolds showed an optimum effect on in vivo subchondral bone repair. Cartilage regeneration on 40%HA/PEEK scaffolds was pronounced. After PUD was introduced onto the HA/PEEK, the PUD@40%HA/PEEK scaffold produced the expected effect on the repair of the OCD in rabbits. Therefore, achieving satisfactory subchondral bone repair can benefit surficial cartilage repair. The PUD@40%HA/PEEK scaffold could induce subchondral bone regeneration to repair the OCD in rabbits and could provide a novel approach for the repair of the OCD in clinical practice.
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Affiliation(s)
- Meng Li
- Department of Orthopedics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061 Shaanxi, China
| | - Menghao Teng
- Department of Orthopedics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061 Shaanxi, China
| | - Genwen Mao
- Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Yiqing Sun
- The Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Shenghang Liu
- The Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Run Li
- The Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Xiangyu Wang
- Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Yusheng Qiu
- Department of Orthopedics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061 Shaanxi, China
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Gu F, Zhang K, Zhu WA, Sui Z, Li J, Xie X, Yu T. Silicone rubber sealed channel induced self-healing of large bone defects: Where is the limit of self-healing of bone? J Orthop Translat 2023; 43:21-35. [PMID: 37965195 PMCID: PMC10641457 DOI: 10.1016/j.jot.2023.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 08/02/2023] [Accepted: 09/12/2023] [Indexed: 11/16/2023] Open
Abstract
Background Large defects of long tubular bones due to severe trauma, bone tumor resection, or osteomyelitis debridement are challenging in orthopedics. Bone non-union and other complications often lead to serious consequences. At present, autologous bone graft is still the gold standard for the treatment of large bone defects. However, autologous bone graft sources are limited. Silicon rubber (SR) materials are widely used in biomedical fields, due to their safety and biocompatibility, and even shown to induce nerve regeneration. Materials and methods We extracted rat bone marrow mesenchymal stem cells (BMMSCs) in vitro and verified the biocompatibility of silicone rubber through cell experiments. Then we designed a rabbit radius critical sized bone defect model to verify the effect of silicone rubber sealed channel inducing bone repair in vivo. Results SR sealed channel could prevent the fibrous tissue from entering the fracture end and forming bone nonunion, thereby inducing self-healing of long tubular bone through endochondral osteogenesis. The hematoma tissue formed in the early stage was rich in osteogenesis and angiogenesis related proteins, and gradually turned into vascularization and endochondral osteogenesis, and finally realized bone regeneration. Conclusions In summary, our study proved that SR sealed channel could prevent the fibrous tissue from entering the fracture end and induce self-healing of long tubular bone through endochondral osteogenesis. In this process, the sealed environment provided by the SR channel was key, and this might indicate that the limit of self-healing of bone exceeded the previously thought. The translational potential of this article This study investigated a new concept to induce the self-healing of large bone defects. It could avoid trauma caused by autologous bone extraction and possible rejection reactions caused by bone graft materials. Further research based on this study, including the innovation of induction materials, might invent a new type of bone inducing production, which could bring convenience to patients. We believed that this study had significant meaning for the treatment of large bone defects in clinical practice.
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Affiliation(s)
- Feng Gu
- Department of Orthopedics, First Hospital of Jilin University, Changchun, 130021, China
| | - Ke Zhang
- Department of Orthopedics, First Hospital of Jilin University, Changchun, 130021, China
| | - Wan-an Zhu
- Department of Radiology, First Hospital of Jilin University, Changchun, 130021, China
| | - Zhenjiang Sui
- Department of Orthopedics, First Hospital of Jilin University, Changchun, 130021, China
| | - Jiangbi Li
- Department of Orthopedics, First Hospital of Jilin University, Changchun, 130021, China
| | - Xiaoping Xie
- Department of Orthopedics, First Hospital of Jilin University, Changchun, 130021, China
| | - Tiecheng Yu
- Department of Orthopedics, First Hospital of Jilin University, Changchun, 130021, China
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8
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Ren Y, Ma C, Yu Y, Yang D, Zhang L, Wang H, Sun L. Poly(l-lactic acid)-based double-layer composite scaffold for bone tissue repair. Regen Biomater 2023; 11:rbad093. [PMID: 38173766 PMCID: PMC10761204 DOI: 10.1093/rb/rbad093] [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: 07/10/2023] [Revised: 09/12/2023] [Accepted: 09/28/2023] [Indexed: 01/05/2024] Open
Abstract
Bone defect is a serious threat to human health. Osteopractic total flavone (OTF) extracted from Rhizoma Drynariae has the effects of promoting bone formation. Panax notoginseng saponin (PNS) has the function of activating blood circulation and removing blood stasis. Therefore, combining OTF and PNS with poly(l-lactic acid) (PLLA) to prepare scaffolds containing PNS in the outer layer and OTF in the inner layer is a feasible solution to rapidly remove blood stasis and continue to promote bone formation. In addition, degradation rate of the scaffold can affect the release time of two drugs. Adding Mg particles in outer layer can control the degradation rate of the scaffold and the drug release. Therefore, a double-layer drug-loaded PLLA scaffold containing OTF in the inner layer, PNS and Mg particles in the outer layer was prepared and characterized to verify its feasibility. The experimental results showed that the scaffold can realize the rapid release of PNS and the continuous release of OTF. With the increase of Mg content, the drug release rate became faster. Animal experiments showed that the scaffold containing 5% Mg particles could effectively promote the formation of new bone in the bone defect of male New Zealand white rabbits, and the area and density of new bone formed were much better than those in the control group. These results demonstrated that the double-layer drug-loaded scaffold had good ability to promote bone repair.
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Affiliation(s)
- Yixing Ren
- Department of Joint Surgery, The Fourth Central Hospital of Baoding City, Baoding 072350, China
| | - Chunyang Ma
- School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Yao Yu
- School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Dandan Yang
- Department of Science and Education, The Fourth Central Hospital of Baoding City, Baoding 072350, China
| | - Lingling Zhang
- Department of Nursing, The Fourth Central Hospital of Baoding City, Baoding 072350, China
| | - Huitao Wang
- Department of General Surgery, The Fourth Central Hospital of Baoding City, Baoding 072350, China
| | - Lei Sun
- School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
- School of Engineering Medicine, Beihang University, Beijing 100083, China
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Gu Y, Zou Y, Huang Y, Liang R, Wu Y, Hu Y, Hong Y, Zhang X, Toh YC, Ouyang H, Zhang S. 3D-printed biomimetic scaffolds with precisely controlled and tunable structures guide cell migration and promote regeneration of osteochondral defect. Biofabrication 2023; 16:015003. [PMID: 37797606 DOI: 10.1088/1758-5090/ad0071] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 10/05/2023] [Indexed: 10/07/2023]
Abstract
Untreated osteochondral defects will develop into osteoarthritis, affecting patients' quality of life. Since articular cartilage and subchondral bone exhibit distinct biological characteristics, repairing osteochondral defects remains a major challenge. Previous studies have tried to fabricate multilayer scaffolds with traditional methods or 3D printing technology. However, the efficacy is unsatisfactory because of poor control over internal structures or a lack of integrity between adjacent layers, severely compromising repair outcomes. Therefore, there is a need for a biomimetic scaffold that can simultaneously boost osteochondral defect regeneration in both structure and function. Herein, an integrated bilayer scaffold with precisely controlled structures is successfully 3D-printed in one step via digital light processing (DLP) technology. The upper layer has both 'lotus- and radial-' distribution pores, and the bottom layer has 'lotus-' pores to guide and facilitate the migration of chondrocytes and bone marrow mesenchymal stem cells, respectively, to the defect area. Tuning pore sizes could modulate the mechanical properties of scaffolds easily. Results show that 3D-printed porous structures allow significantly more cells to infiltrate into the area of 'lotus- and radial-' distribution pores during cell migration assay, subcutaneous implantation, andin situtransplantation, which are essential for osteochondral repair. Transplantation of this 3D-printed bilayer scaffold exhibits a promising osteochondral repair effect in rabbits. Incorporation of Kartogenin into the upper layer of scaffolds further induces better cartilage formation. Combining small molecules/drugs and precisely size-controlled and layer-specific porous structure via DLP technology, this 3D-printed bilayer scaffold is expected to be a potential strategy for osteochondral regeneration.
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Affiliation(s)
- Yuqing Gu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Yiwei Zou
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Yuxuan Huang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Renjie Liang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Yicong Wu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Yifan Hu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Yi Hong
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Xianzhu Zhang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Yi-Chin Toh
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane 4000, Australia
- Centre for Biomedical Technologies, Queensland University of Technology, Brisbane 4059, Australia
| | - Hongwei Ouyang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
- Liangzhu Laboratory, Zhejiang University, Hangzhou, People's Republic of China
- Department of Sports Medicine, School of Medicine, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
- China Orthopedic Regenerative Medicine Group (CORMed), Hangzhou, People's Republic of China
| | - Shufang Zhang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, and Department of Orthopedic Surgery of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
- China Orthopedic Regenerative Medicine Group (CORMed), Hangzhou, People's Republic of China
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10
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Zhu Z, Yu Q, Li H, Han F, Guo Q, Sun H, Zhao H, Tu Z, Liu Z, Zhu C, Li B. Vanillin-based functionalization strategy to construct multifunctional microspheres for treating inflammation and regenerating intervertebral disc. Bioact Mater 2023; 28:167-182. [PMID: 37256210 PMCID: PMC10225820 DOI: 10.1016/j.bioactmat.2023.05.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/25/2023] [Accepted: 05/09/2023] [Indexed: 06/01/2023] Open
Abstract
Intervertebral disc degeneration (IVDD) is one of the main causes of low back pain. Although local delivery strategies using biomaterial carriers have shown potential for IVDD treatment, it remains challenging for intervention against multiple adverse contributors by a single delivery platform. In the present work, we propose a new functionalization strategy using vanillin, a natural molecule with anti-inflammatory and antioxidant properties, to develop multifunctional gelatin methacrylate (GelMA) microspheres for local delivery of transforming growth factor β3 (TGFβ3) toward IVDD treatment. In vitro, functionalized microspheres not only improved the release kinetics of TGFβ3 but also effectively inhibited inflammatory responses and promoted the secretion of extracellular matrix (ECM) in lipopolysaccharide-induced nucleus pulposus (NP) cells. In vivo, functionalized platform plays roles in alleviating inflammation and oxidative stress, preserving the water content of NP and disc height, and maintaining intact structure and biomechanical functions, thereby promoting the regeneration of IVD. High-throughput sequencing suggests that inhibition of the phosphatidylinositol 3-kinase (PI3K)-Akt signaling might be associated with their therapeutic effects. In summary, the vanillin-based functionalization strategy provides a novel and simple way for packaging multiple functions into a single delivery platform and holds promise for tissue regeneration beyond the IVD.
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Affiliation(s)
- Zhuang Zhu
- Orthopedic Institute, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, 215007, China
| | - Qifan Yu
- Orthopedic Institute, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, 215007, China
| | - Hanwen Li
- Orthopedic Institute, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, 215007, China
| | - Feng Han
- Orthopedic Institute, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, 215007, China
| | - Qianping Guo
- Orthopedic Institute, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, 215007, China
| | - Heng Sun
- Orthopedic Institute, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, 215007, China
| | - He Zhao
- Children's Hospital of Soochow University, Pediatric Research Institute of Soochow University, Suzhou, Jiangsu, 215123, China
| | - Zhengdong Tu
- Orthopedic Institute, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, 215007, China
| | - Zhuang Liu
- Institute of Functional Nano & Soft Materials, Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Caihong Zhu
- Orthopedic Institute, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, 215007, China
| | - Bin Li
- Orthopedic Institute, Department of Orthopedic Surgery, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, 215007, China
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11
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Samie M, Khan AF, Rahman SU, Iqbal H, Yameen MA, Chaudhry AA, Galeb HA, Halcovitch NR, Hardy JG. Drug/bioactive eluting chitosan composite foams for osteochondral tissue engineering. Int J Biol Macromol 2023; 229:561-574. [PMID: 36587649 DOI: 10.1016/j.ijbiomac.2022.12.293] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 12/19/2022] [Accepted: 12/25/2022] [Indexed: 12/30/2022]
Abstract
Joint defects associated with a variety of etiologies often extend deep into the subchondral bone leading to functional impairment and joint immobility, and it is a very challenging task to regenerate the bone-cartilage interface offering significant opportunities for biomaterial-based interventions to improve the quality of life of patients. Herein drug-/bioactive-loaded porous tissue scaffolds incorporating nano-hydroxyapatite (nHAp), chitosan (CS) and either hydroxypropyl methylcellulose (HPMC) or Bombyx mori silk fibroin (SF) are fabricated through freeze drying method as subchondral bone substitute. A combination of spectroscopy and microscopy (Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive X-ray (EDX), and X-ray fluorescence (XRF) were used to analyze the structure of the porous biomaterials. The compressive mechanical properties of these scaffolds are biomimetic of cancellous bone tissues and capable of releasing drugs/bioactives (exemplified with triamcinolone acetonide, TA, or transforming growth factor-β1, TGF-β1, respectively) over a period of days. Mouse preosteoblast MC3T3-E1 cells were observed to adhere and proliferate on the tissue scaffolds as confirmed by the cell attachment, live-dead assay and alamarBlue™ assay. Interestingly, RT-qPCR analysis showed that the TA downregulated inflammatory biomarkers and upregulated the bone-specific biomarkers, suggesting such tissue scaffolds have long-term potential for clinical application.
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Affiliation(s)
- Muhammad Samie
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan; Department of Pharmacy, COMSATS University Islamabad, Abbottabad Campus, 22060, Pakistan; Department of Chemistry, Lancaster University, Lancaster, Lancashire LA1 4YB, United Kingdom; Materials Science Institute, Lancaster University, Lancaster, Lancashire LA1 4YW, United Kingdom; Institute of Pharmaceutical Sciences, Khyber Medical University, Peshawar, Khyber Pakhtunkhwa 25100, Pakistan.
| | - Ather Farooq Khan
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Saeed Ur Rahman
- Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, Khyber Pakhtunkhwa 25100, Pakistan
| | - Haffsah Iqbal
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Muhammad Arfat Yameen
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad Campus, 22060, Pakistan
| | - Aqif Anwar Chaudhry
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Hanaa A Galeb
- Department of Chemistry, Lancaster University, Lancaster, Lancashire LA1 4YB, United Kingdom; Department of Chemistry, Science and Arts College, Rabigh Campus, King Abdulaziz University, 21577 Jeddah, Saudi Arabia
| | - Nathan R Halcovitch
- Department of Chemistry, Lancaster University, Lancaster, Lancashire LA1 4YB, United Kingdom
| | - John G Hardy
- Department of Chemistry, Lancaster University, Lancaster, Lancashire LA1 4YB, United Kingdom; Materials Science Institute, Lancaster University, Lancaster, Lancashire LA1 4YW, United Kingdom.
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12
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Yang M, Zhang ZC, Yuan FZ, Deng RH, Yan X, Mao FB, Chen YR, Lu H, Yu JK. An immunomodulatory polypeptide hydrogel for osteochondral defect repair. Bioact Mater 2023; 19:678-689. [PMID: 35600970 PMCID: PMC9112113 DOI: 10.1016/j.bioactmat.2022.05.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/30/2022] [Accepted: 05/04/2022] [Indexed: 12/14/2022] Open
Abstract
Osteochondral injury is a common and frequent orthopedic disease that can lead to more serious degenerative joint disease. Tissue engineering is a promising modality for osteochondral repair, but the implanted scaffolds are often immunogenic and can induce unwanted foreign body reaction (FBR). Here, we prepare a polypept(o)ide-based PAA-RGD hydrogel using a novel thiol/thioester dual-functionalized hyperbranched polypeptide P(EG3Glu-co-Cys) and maleimide-functionalized polysarcosine under biologically benign conditions. The PAA-RGD hydrogel shows suitable biodegradability, excellent biocompatibility, and low immunogenicity, which together lead to optimal performance for osteochondral repair in New Zealand white rabbits even at the early stage of implantation. Further in vitro and in vivo mechanistic studies corroborate the immunomodulatory role of the PAA-RGD hydrogel, which induces minimum FBR responses and a high level of polarization of macrophages into the immunosuppressive M2 subtypes. These findings demonstrate the promising potential of the PAA-RGD hydrogel for osteochondral regeneration and highlight the importance of immunomodulation. The results may inspire the development of PAA-based materials for not only osteochondral defect repair but also various other tissue engineering and bio-implantation applications. A polypept(o)ide-based hydrogel. Prominent and early osteochondral repair. Minimized immunogenicity.
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Affiliation(s)
- Meng Yang
- Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, 100191, China
- Institute of Sports Medicine of Peking University, Beijing, 100191, China
| | - Zheng-Chu Zhang
- Beijing National Laboratory for Molecular Sciences, Center for Soft Matter Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, People's Republic of China
| | - Fu-Zhen Yuan
- Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, 100191, China
- Institute of Sports Medicine of Peking University, Beijing, 100191, China
| | - Rong-Hui Deng
- Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, 100191, China
- Institute of Sports Medicine of Peking University, Beijing, 100191, China
| | - Xin Yan
- Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, 100191, China
- Institute of Sports Medicine of Peking University, Beijing, 100191, China
| | - Feng-Biao Mao
- Institute of Medicine Innovation and Research Peking University Third Hospital, Beijing, 100191, China
| | - You-Rong Chen
- Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, 100191, China
- Institute of Sports Medicine of Peking University, Beijing, 100191, China
- Corresponding author. Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, 100191, China.
| | - Hua Lu
- Beijing National Laboratory for Molecular Sciences, Center for Soft Matter Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, People's Republic of China
- Corresponding author.
| | - Jia-Kuo Yu
- Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, 100191, China
- Institute of Sports Medicine of Peking University, Beijing, 100191, China
- Corresponding author. Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, 100191, China.
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13
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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: 16] [Impact Index Per Article: 16.0] [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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14
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Barui S, Ghosh D, Laurencin CT. Osteochondral regenerative engineering: challenges, state-of-the-art and translational perspectives. Regen Biomater 2022; 10:rbac109. [PMID: 36683736 PMCID: PMC9845524 DOI: 10.1093/rb/rbac109] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/22/2022] [Accepted: 12/09/2022] [Indexed: 12/27/2022] Open
Abstract
Despite quantum leaps, the biomimetic regeneration of cartilage and osteochondral regeneration remains a major challenge, owing to the complex and hierarchical nature of compositional, structural and functional properties. In this review, an account of the prevailing challenges in biomimicking the gradients in porous microstructure, cells and extracellular matrix (ECM) orientation is presented. Further, the spatial arrangement of the cues in inducing vascularization in the subchondral bone region while maintaining the avascular nature of the adjacent cartilage layer is highlighted. With rapid advancement in biomaterials science, biofabrication tools and strategies, the state-of-the-art in osteochondral regeneration since the last decade has expansively elaborated. This includes conventional and additive manufacturing of synthetic/natural/ECM-based biomaterials, tissue-specific/mesenchymal/progenitor cells, growth factors and/or signaling biomolecules. Beyond the laboratory-based research and development, the underlying challenges in translational research are also provided in a dedicated section. A new generation of biomaterial-based acellular scaffold systems with uncompromised biocompatibility and osteochondral regenerative capability is necessary to bridge the clinical demand and commercial supply. Encompassing the basic elements of osteochondral research, this review is believed to serve as a standalone guide for early career researchers, in expanding the research horizon to improve the quality of life of osteoarthritic patients affordably.
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Affiliation(s)
- Srimanta Barui
- Connecticut Convergence Institute for Translation in Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Debolina Ghosh
- Connecticut Convergence Institute for Translation in Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
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15
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Tan XH, Liu L, Mitryashkin A, Wang Y, Goh JCH. Silk Fibroin as a Bioink - A Thematic Review of Functionalization Strategies for Bioprinting Applications. ACS Biomater Sci Eng 2022; 8:3242-3270. [PMID: 35786841 DOI: 10.1021/acsbiomaterials.2c00313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Bioprinting is an emerging tissue engineering technique that has attracted the attention of researchers around the world, for its ability to create tissue constructs that recapitulate physiological function. While the technique has been receiving hype, there are still limitations to the use of bioprinting in practical applications, much of which is due to inappropriate bioink design that is unable to recapitulate complex tissue architecture. Silk fibroin (SF) is an exciting and promising bioink candidate that has been increasingly popular in bioprinting applications because of its processability, biodegradability, and biocompatibility properties. However, due to its lack of optimum gelation properties, functionalization strategies need to be employed so that SF can be effectively used in bioprinting applications. These functionalization strategies are processing methods which allow SF to be compatible with specific bioprinting techniques. Previous literature reviews of SF as a bioink mainly focus on discussing different methods to functionalize SF as a bioink, while a comprehensive review on categorizing SF functional methods according to their potential applications is missing. This paper seeks to discuss and compartmentalize the different strategies used to functionalize SF for bioprinting and categorize the strategies for each bioprinting method (namely, inkjet, extrusion, and light-based bioprinting). By compartmentalizing the various strategies for each printing method, the paper illustrates how each strategy is better suited for a target tissue application. The paper will also discuss applications of SF bioinks in regenerating various tissue types and the challenges and future trends that SF can take in its role as a bioink material.
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Affiliation(s)
- Xuan Hao Tan
- Department of Biomedical Engineering, College of Engineering and Design, National University of Singapore, 15 Kent Ridge Crescent, E7-06-03, Singapore 119276, Singapore.,Integrative Sciences and Engineering Programme, National University of Singapore, University Hall, Tan Chin Tuan Wing, #05-03, 21 Lower Kent Ridge Road, Singapore 119077, Singapore
| | - Ling Liu
- Department of Biomedical Engineering, College of Engineering and Design, National University of Singapore, 15 Kent Ridge Crescent, E7-06-03, Singapore 119276, Singapore
| | - Alexander Mitryashkin
- Department of Biomedical Engineering, College of Engineering and Design, National University of Singapore, 15 Kent Ridge Crescent, E7-06-03, Singapore 119276, Singapore
| | - Yunyun Wang
- Department of Biomedical Engineering, College of Engineering and Design, National University of Singapore, 15 Kent Ridge Crescent, E7-06-03, Singapore 119276, Singapore
| | - James Cho Hong Goh
- Department of Biomedical Engineering, College of Engineering and Design, National University of Singapore, 15 Kent Ridge Crescent, E7-06-03, Singapore 119276, Singapore.,Integrative Sciences and Engineering Programme, National University of Singapore, University Hall, Tan Chin Tuan Wing, #05-03, 21 Lower Kent Ridge Road, Singapore 119077, Singapore.,Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, NUHS Tower Block, Level 11, 1E Kent Ridge Road, Singapore 119288, Singapore
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16
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Roseti L, Grigolo B. Current concepts and perspectives for articular cartilage regeneration. J Exp Orthop 2022; 9:61. [PMID: 35776217 PMCID: PMC9249961 DOI: 10.1186/s40634-022-00498-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 06/13/2022] [Indexed: 11/10/2022] Open
Abstract
Articular cartilage injuries are common in the population. The increment in the elderly people and active life results in an increasing demand for new technologies and good outcomes to satisfy longer and healthier life expectancies. However, because of cartilage's low regenerative capacity, finding an efficacious treatment is still challenging for orthopedics. Since the pioneering studies based on autologous cell transplantation, regenerative medicine has opened new approaches for cartilage lesion treatment. Tissue engineering combines cells, biomaterials, and biological factors to regenerate damaged tissues, overcoming conventional therapeutic strategies. Cells synthesize matrix structural components, maintain tissue homeostasis by modulating metabolic, inflammatory, and immunologic pathways. Scaffolds are well acknowledged by clinicians in regenerative applications since they provide the appropriate environment for cells, can be easily implanted, reduce surgical morbidity, allow enhanced cell proliferation, maturation, and an efficient and complete integration with surrounding articular cartilage. Growth factors are molecules that facilitate tissue healing and regeneration by stimulating cell signal pathways. To date, different cell sources and a wide range of natural and synthetic scaffolds have been used both in pre-clinical and clinical studies with the aim to find the suitable solution for recapitulating cartilage microenvironment and inducing the formation of a new tissue with the biochemical and mechanical properties of the native one. Here, we describe the current concepts for articular cartilage regeneration, highlighting the key actors of this process trying to identify the best perspectives.
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Affiliation(s)
- Livia Roseti
- IRCCS Istituto Ortopedico Rizzoli Bologna, Bologna, Italy
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17
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Jia H, Lin X, Wang D, Wang J, Shang Q, He X, Wu K, Zhao B, Peng P, Wang H, Wang D, Li P, Yang L, Luo Z, Yang L. Injectable hydrogel with nucleus pulposus-matched viscoelastic property prevents intervertebral disc degeneration. J Orthop Translat 2022; 33:162-173. [PMID: 35415072 PMCID: PMC8980713 DOI: 10.1016/j.jot.2022.03.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 03/10/2022] [Accepted: 03/16/2022] [Indexed: 02/07/2023] Open
Abstract
Background/Objective Intervertebral disc (IVD) degeneration (IVDD) that greatly affected by regional biomechanical environment is a major cause of low back pain. Injectable hydrogels have been commonly studied for treatment of IVDD due to their capability of mimicking extracellular matrix structure to support cellular behavior and clinical prospects in minimally invasive treatment. However, most hydrogels suffer from complicated chemistry, potential uncertainty and toxicity from in-situ gelation, and mismatch with IVD mechanical environment that limit their therapeutic effects or clinical translation in IVDD or intervertebral disc defect repair. For IVD lesion repair, the study aims to develop a novel hydrogel with shear-thinning enabled injectability, high bio-safety, and mechanical properties adaptable to the IVD environment, using a simple chemistry and method. And therapeutic efficacy of the novel hydrogel in the treatment of IVDD or intervertebral disc defect will be revealed. Methods A glycerol cross-linked PVA gel (GPG) was synthesized based on multiple H-bonds formation between glycerol molecules and PVA chains. The rheological and mechanical properties were tested. The swelling ratio was measured. The micro-architecture was observed through scanning and transmission electron microscopes. Nucleus pulposus (NP) cells were cultured in GPG-coated plates or silicone chambers treated under hydrostatic or dynamic loading in vitro, and examined for proliferation, vitality, apoptosis, expression of catabolic and anabolic markers. GPG was injected in needle puncture (IDD) or NP discectomy (NPD) models in vivo, and examined through magnetic resonance imaging, micro-computed tomography scanning and histological staining. Results GPG had a highly porous structure consisting of interconnected pores. Meanwhile, the GPG had NP-like viscoelastic property, and was able to withstand the cyclic deformation while exhibiting a prominent energy-dissipating capability. In vitro cell tests demonstrated that, the hydrogel significantly down-regulated the expression of catabolic markers, maintained the level of anabolic markers, preserved cell proliferation and vitality, reduced apoptotic rate of NP cells under pathologically hydrostatic and dynamic loading environments compared to cells cultured on untreated plate or silicone chamber. In vivo animal studies revealed that injection of GPG efficiently maintained NP structural integrity, IVD height and relative water content in IDD models, and stimulated the fibrous repair in NPD models. Conclusion This study showed that GPG, with high injectability, NP-like viscoelastic characteristics, good energy-dissipating properties and swelling capacities, preserved NP cells vitality against pathological loading, and had therapeutic effects on IVD repair in IDD and NPD models. The translational potential of this article Effective clinical strategy for treatment of intervertebral disc degeneration (IVDD) is still lacking. This study demonstrates that injection of a hydrogel with nucleus pulposus-matched viscoelastic property could remarkably prevent the IVDD progress. Prepared with simple chemistry and procedure, the cell/drug-free GPG with high bio-safety and shear-thinning enabled injectability bears great translational potential for the clinical treatment of IVDD via a minimally invasive approach.
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Affiliation(s)
- Haoruo Jia
- Institute of Orthopedic Surgery, The First Affiliated Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Xiao Lin
- Orthopedic Institute and Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou, 215000, China
| | - Dong Wang
- Institute of Orthopedic Surgery, The First Affiliated Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Jingwei Wang
- Department of Medicine Chemistry and Pharmaceutical Analysis, School of Pharmacy, Fourth Military Medical University, Xi'an, 710032, China
| | - Qiliang Shang
- Institute of Orthopedic Surgery, The First Affiliated Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Xin He
- Department of Medicine Chemistry and Pharmaceutical Analysis, School of Pharmacy, Fourth Military Medical University, Xi'an, 710032, China
- Air Force Hospital of Eastern Theater Command, Nanjing, 210000, China
| | - Kang Wu
- Orthopedic Institute and Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou, 215000, China
| | - Boyan Zhao
- Department of Neurosurgery, The First Affiliated Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Pandi Peng
- Institute of Flexible Electronics, Northwestern Polytechnical University, Xi'an, 710129, China
| | - Han Wang
- Institute of Orthopedic Surgery, The First Affiliated Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Di Wang
- Institute of Orthopedic Surgery, The First Affiliated Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Pan Li
- Institute of Orthopedic Surgery, The First Affiliated Hospital, Fourth Military Medical University, Xi'an, 710032, China
- Medical Research Institute, Northwestern Polytechnical University, Xi′an, 710032, China
| | - Liu Yang
- Institute of Orthopedic Surgery, The First Affiliated Hospital, Fourth Military Medical University, Xi'an, 710032, China
- Medical Research Institute, Northwestern Polytechnical University, Xi′an, 710032, China
| | - Zhuojing Luo
- Institute of Orthopedic Surgery, The First Affiliated Hospital, Fourth Military Medical University, Xi'an, 710032, China
- Medical Research Institute, Northwestern Polytechnical University, Xi′an, 710032, China
| | - Lei Yang
- Orthopedic Institute and Department of Orthopedics, The First Affiliated Hospital, Soochow University, Suzhou, 215000, China
- Center for Health Science and Engineering (CHSE), School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, 300130, China
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18
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Zhang Y, Lin T, Meng H, Wang X, Peng H, Liu G, Wei S, Lu Q, Wang Y, Wang A, Xu W, Shao H, Peng J. 3D gel-printed porous magnesium scaffold coated with dibasic calcium phosphate dihydrate for bone repair in vivo. J Orthop Translat 2022; 33:13-23. [PMID: 35198379 PMCID: PMC8819133 DOI: 10.1016/j.jot.2021.11.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 11/07/2021] [Accepted: 11/16/2021] [Indexed: 12/22/2022] Open
Abstract
Background /Objective: The treatment of bone defect has always been a difficult problem in orthopedic clinic. The search for alternative biodegradable implants is a hot topic. The development of biodegradable magnesium scaffolds for the treatment of bone defects has long been a goal of the public. Methods In this study, we proposed a porous magnesium scaffold prepared by 3D gel printing and surface modification with an additional calcium phosphate coating and use of its strength, degradability and slow degradation rate in a bone graft substitute material. The porous magnesium granular scaffold was prepared by 3D gel printing technology and modified by DCPD (Dibasic Calcium Phosphate Dihydrate) coating. The biocompatibility, degradation rate, and osteogenic ability of the scaffold were evaluated in vitro and in vivo. Results The biocompatibility, in vivo degradation and bone defect healing response of the implants were investigated. Porous magnesium scaffolds were successfully prepared, and the strength of sintered scaffolds reached 5.38 MPa. The degradation rates of scaffolds were significantly reduced after coating with DCPD. The cell compatibility evaluation showed that DCPD-coated Mg scaffold was suitable for cell proliferation. In vivo biosafety monitoring showed that scaffold implantation did not cause an increase in Mg ion concentration in vivo, and no toxic damage was detected in the liver or kidney. Micro-CT and pathological results showed that a large amount of new bone was formed at 6 weeks. At 12 weeks, approximately 52% of the scaffold volume remained. At 24 weeks, osteogenesis, which was stimulated by some residual scaffold, still can be observed. In summary, this study suggests that 3D gel-printed DCPD-coated porous magnesium scaffolds have great potential as bone graft alternatives. Conclusion In summary, this study suggests that 3D gel-printed DCPD-coated porous magnesium scaffolds have great potential as bone graft alternatives. The Translational potential of this article The translational potential of this article is to make use of the advantages of 3D gel printing technology with higher efficiency and lower cost compared with SLM and SLS technologies, and use pure magnesium powder as raw material to prepare degradable porous magnesium metal scaffolds, opening up a new technical route for the preparation of degradable porous magnesium scaffolds which are made for bone defect regeneration in the future.
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Affiliation(s)
- Yuxuan Zhang
- Medical School of Chinese PLA, Beijing, 100853, China
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Laboratory (No BZ0128), Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, Beijing, 100853, China
| | - Tao Lin
- Institute for Advanced Materials & Technology, University of Science and Technology Beijing, Beijing, 100083, China
| | - Haoye Meng
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Laboratory (No BZ0128), Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, Beijing, 100853, China
| | - Xueting Wang
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Laboratory (No BZ0128), Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, Beijing, 100853, China
| | - Hong Peng
- Medical School of Chinese PLA, Beijing, 100853, China
| | - Guangbo Liu
- Medical School of Chinese PLA, Beijing, 100853, China
- Strategic Support Force Medical Center, No.9, Anxiang Beli, Beijing, 100101, China
| | - Shuai Wei
- Tianjin Hospital, Tianjin University, No. 406 Jiefang South Road, Tianjin, 300211, China
| | - Qiang Lu
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Laboratory (No BZ0128), Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, Beijing, 100853, China
| | - Yu Wang
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Laboratory (No BZ0128), Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, Beijing, 100853, China
| | - Aiyuan Wang
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Laboratory (No BZ0128), Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, Beijing, 100853, China
| | - Wenjing Xu
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Laboratory (No BZ0128), Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, Beijing, 100853, China
| | - Huiping Shao
- Institute for Advanced Materials & Technology, University of Science and Technology Beijing, Beijing, 100083, China
- Corresponding author.
| | - Jiang Peng
- Institute of Orthopedics, Chinese PLA General Hospital, Beijing Key Laboratory (No BZ0128), Beijing Key Lab of Regenerative Medicine in Orthopedics, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, Beijing, 100853, China
- Corresponding author.
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19
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Hopkins C, Qin L. The importance of microstructure in R&D and applications of biomaterials and biological modulation in orthopaedics. J Orthop Translat 2021; 30:A1-A2. [PMID: 34804797 PMCID: PMC8569221 DOI: 10.1016/j.jot.2021.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Affiliation(s)
- Chelsea Hopkins
- The Chinese University of Hong Kong, Prince of Wales Hospital, Department of Orthopaedics & Traumatology, Shatin, N.T, Hong Kong, China
| | - Ling Qin
- The Chinese University of Hong Kong, Prince of Wales Hospital, Department of Orthopaedics & Traumatology, Shatin, N.T, Hong Kong, China
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