1
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Rindt WD, Krug M, Yamada S, Sennefelder F, Belz L, Cheng WH, Azeem M, Kuric M, Evers M, Leich E, Hartmann TN, Pereira AR, Hermann M, Hansmann J, Mussoni C, Stahlhut P, Ahmad T, Yassin MA, Mustafa K, Ebert R, Jundt F. A 3D bioreactor model to study osteocyte differentiation and mechanobiology under perfusion and compressive mechanical loading. Acta Biomater 2024; 184:210-225. [PMID: 38969078 DOI: 10.1016/j.actbio.2024.06.041] [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: 03/07/2024] [Revised: 06/25/2024] [Accepted: 06/26/2024] [Indexed: 07/07/2024]
Abstract
Osteocytes perceive and process mechanical stimuli in the lacuno-canalicular network in bone. As a result, they secrete signaling molecules that mediate bone formation and resorption. To date, few three-dimensional (3D) models exist to study the response of mature osteocytes to biophysical stimuli that mimic fluid shear stress and substrate strain in a mineralized, biomimetic bone-like environment. Here we established a biomimetic 3D bone model by utilizing a state-of-art perfusion bioreactor platform where immortomouse/Dmp1-GFP-derived osteoblastic IDG-SW3 cells were differentiated into mature osteocytes. We evaluated proliferation and differentiation properties of the cells on 3D microporous scaffolds of decellularized bone (dBone), poly(L-lactide-co-trimethylene carbonate) lactide (LTMC), and beta-tricalcium phosphate (β-TCP) under physiological fluid flow conditions over 21 days. Osteocyte viability and proliferation were similar on the scaffolds with equal distribution of IDG-SW3 cells on dBone and LTMC scaffolds. After seven days, the differentiation marker alkaline phosphatase (Alpl), dentin matrix acidic phosphoprotein 1 (Dmp1), and sclerostin (Sost) were significantly upregulated in IDG-SW3 cells (p = 0.05) on LTMC scaffolds under fluid flow conditions at 1.7 ml/min, indicating rapid and efficient maturation into osteocytes. Osteocytes responded by inducing the mechanoresponsive genes FBJ osteosarcoma oncogene (Fos) and prostaglandin-endoperoxide synthase 2 (Ptgs2) under perfusion and dynamic compressive loading at 1 Hz with 5 % strain. Together, we successfully created a 3D biomimetic platform as a robust tool to evaluate osteocyte differentiation and mechanobiology in vitro while recapitulating in vivo mechanical cues such as fluid flow within the lacuno-canalicular network. STATEMENT OF SIGNIFICANCE: This study highlights the importance of creating a three-dimensional (3D) in vitro model to study osteocyte differentiation and mechanobiology, as cellular functions are limited in two-dimensional (2D) models lacking in vivo tissue organization. By using a perfusion bioreactor platform, physiological conditions of fluid flow and compressive loading were mimicked to which osteocytes are exposed in vivo. Microporous poly(L-lactide-co-trimethylene carbonate) lactide (LTMC) scaffolds in 3D are identified as a valuable tool to create a favorable environment for osteocyte differentiation and to enable mechanical stimulation of osteocytes by perfusion and compressive loading. The LTMC platform imitates the mechanical bone environment of osteocytes, allowing the analysis of the interaction with other cell types in bone under in vivo biophysical stimuli.
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Affiliation(s)
- Wyonna Darleen Rindt
- Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
| | - Melanie Krug
- Department of Musculoskeletal Tissue Regeneration, Orthopedic Clinic König-Ludwig-Haus, University of Würzburg, Würzburg, Germany
| | - Shuntaro Yamada
- Centre of Translational Oral Research (TOR)-Tissue Engineering Group, Department of Clinical Dentistry, University of Bergen, Bergen, Norway
| | | | - Louisa Belz
- Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
| | - Wen-Hui Cheng
- Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
| | - Muhammad Azeem
- Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
| | - Martin Kuric
- Department of Musculoskeletal Tissue Regeneration, Orthopedic Clinic König-Ludwig-Haus, University of Würzburg, Würzburg, Germany
| | | | - Ellen Leich
- Institute of Pathology, University of Würzburg, Würzburg, Germany
| | - Tanja Nicole Hartmann
- Department of Medicine I, Medical Center-University Freiburg, and Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Ana Rita Pereira
- IZKF Group Tissue Regeneration in Musculoskeletal Diseases, University Hospital Würzburg, Würzburg, Germany
| | - Marietta Hermann
- IZKF Group Tissue Regeneration in Musculoskeletal Diseases, University Hospital Würzburg, Würzburg, Germany
| | - Jan Hansmann
- Fraunhofer Institute for Silicate Research ISC, Translational Center Regenerative Therapies, Würzburg, Germany; Department of Electrical Engineering, University of Applied Sciences Würzburg-Schweinfurt, Schweinfurt, Germany
| | - Camilla Mussoni
- Department for Functional Materials in Medicine and Dentistry, Institute of Functional Materials and Biofabrication (IFB), and Bavarian Polymer Institute (BPI), University of Würzburg, Würzburg, Germany
| | - Philipp Stahlhut
- Department for Functional Materials in Medicine and Dentistry, Institute of Functional Materials and Biofabrication (IFB), and Bavarian Polymer Institute (BPI), University of Würzburg, Würzburg, Germany
| | - Taufiq Ahmad
- Department for Functional Materials in Medicine and Dentistry, Institute of Functional Materials and Biofabrication (IFB), and Bavarian Polymer Institute (BPI), University of Würzburg, Würzburg, Germany
| | - Mohammed Ahmed Yassin
- Centre of Translational Oral Research (TOR)-Tissue Engineering Group, Department of Clinical Dentistry, University of Bergen, Bergen, Norway
| | - Kamal Mustafa
- Centre of Translational Oral Research (TOR)-Tissue Engineering Group, Department of Clinical Dentistry, University of Bergen, Bergen, Norway
| | - Regina Ebert
- Department of Musculoskeletal Tissue Regeneration, Orthopedic Clinic König-Ludwig-Haus, University of Würzburg, Würzburg, Germany
| | - Franziska Jundt
- Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany.
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Namvar A, Lozanovski B, Downing D, Williamson T, Kastrati E, Shidid D, Hill D, Buehner U, Ryan S, Choong PF, Sanaei R, Leary M, Brandt M. Finite element analysis of patient-specific additive-manufactured implants. Front Bioeng Biotechnol 2024; 12:1386816. [PMID: 38784769 PMCID: PMC11111884 DOI: 10.3389/fbioe.2024.1386816] [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: 02/16/2024] [Accepted: 04/18/2024] [Indexed: 05/25/2024] Open
Abstract
Introduction: Bone tumors, characterized by diverse locations and shapes, often necessitate surgical excision followed by custom implant placement to facilitate targeted bone reconstruction. Leveraging additive manufacturing, patient-specific implants can be precisely tailored with complex geometries and desired stiffness, enhancing their suitability for bone ingrowth. Methods: In this work, a finite element model is employed to assess patient-specific lattice implants in femur bones. Our model is validated using experimental data obtained from an animal study (n = 9). Results: The results demonstrate the accuracy of the proposed finite element model in predicting the implant mechanical behavior. The model was used to investigate the influence of reducing the elastic modulus of a solid Ti6Al4V implant by tenfold, revealing that such a reduction had no significant impact on bone behavior under maximum compression and torsion loading. This finding suggests a potential avenue for reducing the endoprosthesis modulus without compromising bone integrity. Discussion: Our research suggests that employing fully lattice implants not only facilitates bone ingrowth but also has the potential to reduce overall implant stiffness. This reduction is crucial in preventing significant bone remodeling associated with stress shielding, a challenge often associated with the high stiffness of fully solid implants. The study highlights the mechanical benefits of utilizing lattice structures in implant design for enhanced patient outcomes.
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Affiliation(s)
- Arman Namvar
- RMIT Centre for Additive Manufacture, School of Engineering, RMIT University, Melbourne, VIC, Australia
- Department of Surgery, St. Vincent’s Hospital, Melbourne, VIC, Australia
| | - Bill Lozanovski
- RMIT Centre for Additive Manufacture, School of Engineering, RMIT University, Melbourne, VIC, Australia
| | - David Downing
- RMIT Centre for Additive Manufacture, School of Engineering, RMIT University, Melbourne, VIC, Australia
| | - Tom Williamson
- RMIT Centre for Additive Manufacture, School of Engineering, RMIT University, Melbourne, VIC, Australia
- Stryker, Sydney, NSW, Australia
| | - Endri Kastrati
- RMIT Centre for Additive Manufacture, School of Engineering, RMIT University, Melbourne, VIC, Australia
- Stryker, Sydney, NSW, Australia
| | - Darpan Shidid
- RMIT Centre for Additive Manufacture, School of Engineering, RMIT University, Melbourne, VIC, Australia
| | - David Hill
- RMIT Centre for Additive Manufacture, School of Engineering, RMIT University, Melbourne, VIC, Australia
| | | | - Stewart Ryan
- Melbourne Veterinary School, Faculty of Science, The University of Melbourne, Melbourne, VIC, Australia
| | - Peter F. Choong
- Department of Surgery, St. Vincent’s Hospital, Melbourne, VIC, Australia
| | - Reza Sanaei
- Melbourne Veterinary School, Faculty of Science, The University of Melbourne, Melbourne, VIC, Australia
| | - Martin Leary
- RMIT Centre for Additive Manufacture, School of Engineering, RMIT University, Melbourne, VIC, Australia
| | - Milan Brandt
- RMIT Centre for Additive Manufacture, School of Engineering, RMIT University, Melbourne, VIC, Australia
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3
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Wang S, Jia Z, Dai M, Feng X, Tang C, Liu L, Cao L. Advances in natural and synthetic macromolecules with stem cells and extracellular vesicles for orthopedic disease treatment. Int J Biol Macromol 2024; 268:131874. [PMID: 38692547 DOI: 10.1016/j.ijbiomac.2024.131874] [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: 10/15/2023] [Revised: 04/16/2024] [Accepted: 04/24/2024] [Indexed: 05/03/2024]
Abstract
Serious orthopedic disorders resulting from myriad diseases and impairments continue to pose a considerable challenge to contemporary clinical care. Owing to its limited regenerative capacity, achieving complete bone tissue regeneration and complete functional restoration has proven challenging with existing treatments. By virtue of cellular regenerative and paracrine pathways, stem cells are extensively utilized in the restoration and regeneration of bone tissue; however, low survival and retention after transplantation severely limit their therapeutic effect. Meanwhile, biomolecule materials provide a delivery platform that improves stem cell survival, increases retention, and enhances therapeutic efficacy. In this review, we present the basic concepts of stem cells and extracellular vesicles from different sources, emphasizing the importance of using appropriate expansion methods and modification strategies. We then review different types of biomolecule materials, focusing on their design strategies. Moreover, we summarize several forms of biomaterial preparation and application strategies as well as current research on biomacromolecule materials loaded with stem cells and extracellular vesicles. Finally, we present the challenges currently impeding their clinical application for the treatment of orthopedic diseases. The article aims to provide researchers with new insights for subsequent investigations.
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Affiliation(s)
- Supeng Wang
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China; Jiujiang City Key Laboratory of Cell Therapy, The First Hospital of Jiujiang City, Jiujiang 332000, China; Ningxia Medical University, Ningxia 750004, China
| | - Zhiqiang Jia
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China
| | - Minghai Dai
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China
| | - Xujun Feng
- Jiujiang City Key Laboratory of Cell Therapy, The First Hospital of Jiujiang City, Jiujiang 332000, China
| | - Chengxuan Tang
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China
| | - Liangle Liu
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China.
| | - Lingling Cao
- Jiujiang City Key Laboratory of Cell Therapy, The First Hospital of Jiujiang City, Jiujiang 332000, China.
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4
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Griesbach JK, Schulte FA, Schädli GN, Rubert M, Müller R. Mechanoregulation analysis of bone formation in tissue engineered constructs requires a volumetric method using time-lapsed micro-computed tomography. Acta Biomater 2024; 179:149-163. [PMID: 38492908 DOI: 10.1016/j.actbio.2024.03.008] [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: 05/15/2023] [Revised: 02/09/2024] [Accepted: 03/07/2024] [Indexed: 03/18/2024]
Abstract
Bone can adapt its microstructure to mechanical loads through mechanoregulation of the (re)modeling process. This process has been investigated in vivo using time-lapsed micro-computed tomography (micro-CT) and micro-finite element (FE) analysis using surface-based methods, which are highly influenced by surface curvature. Consequently, when trying to investigate mechanoregulation in tissue engineered bone constructs, their concave surfaces make the detection of mechanoregulation impossible when using surface-based methods. In this study, we aimed at developing and applying a volumetric method to non-invasively quantify mechanoregulation of bone formation in tissue engineered bone constructs using micro-CT images and FE analysis. We first investigated hydroxyapatite scaffolds seeded with human mesenchymal stem cells that were incubated over 8 weeks with one mechanically loaded and one control group. Higher mechanoregulation of bone formation was measured in loaded samples with an area under the curve for the receiver operating curve (AUCformation) of 0.633-0.637 compared to non-loaded controls (AUCformation: 0.592-0.604) during culture in osteogenic medium (p < 0.05). Furthermore, we applied the method to an in vivo mouse study investigating the effect of loading frequencies on bone adaptation. The volumetric method detected differences in mechanoregulation of bone formation between loading conditions (p < 0.05). Mechanoregulation in bone formation was more pronounced (AUCformation: 0.609-0.642) compared to the surface-based method (AUCformation: 0.565-0.569, p < 0.05). Our results show that mechanoregulation of formation in bone tissue engineered constructs takes place and its extent can be quantified with a volumetric mechanoregulation method using time-lapsed micro-CT and FE analysis. STATEMENT OF SIGNIFICANCE: Many efforts have been directed towards optimizing bone scaffolds for tissue growth. However, the impact of the scaffolds mechanical environment on bone growth is still poorly understood, requiring accurate assessment of its mechanoregulation. Existing surface-based methods were unable to detect mechanoregulation in tissue engineered constructs, due to predominantly concave surfaces in scaffolds. We present a volumetric approach to enable the precise and non-invasive quantification and analysis of mechanoregulation in bone tissue engineered constructs by leveraging time-lapsed micro-CT imaging, image registration, and finite element analysis. The implications of this research extend to diverse experimental setups, encompassing culture conditions, and material optimization, and investigations into bone diseases, enabling a significant stride towards comprehensive advancements in bone tissue engineering and regenerative medicine.
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Affiliation(s)
- Julia K Griesbach
- Institute for Biomechanics, ETH Zürich, Gloriastrasse 37/39, 8092 Zürich, Switzerland
| | - Friederike A Schulte
- Institute for Biomechanics, ETH Zürich, Gloriastrasse 37/39, 8092 Zürich, Switzerland
| | - Gian Nutal Schädli
- Institute for Biomechanics, ETH Zürich, Gloriastrasse 37/39, 8092 Zürich, Switzerland
| | - Marina Rubert
- Institute for Biomechanics, ETH Zürich, Gloriastrasse 37/39, 8092 Zürich, Switzerland
| | - Ralph Müller
- Institute for Biomechanics, ETH Zürich, Gloriastrasse 37/39, 8092 Zürich, Switzerland.
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5
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Lian M, Qiao Z, Qiao S, Zhang X, Lin J, Xu R, Zhu N, Tang T, Huang Z, Jiang W, Shi J, Hao Y, Lai H, Dai K. Nerve Growth Factor-Preconditioned Mesenchymal Stem Cell-Derived Exosome-Functionalized 3D-Printed Hierarchical Porous Scaffolds with Neuro-Promotive Properties for Enhancing Innervated Bone Regeneration. ACS NANO 2024; 18:7504-7520. [PMID: 38412232 DOI: 10.1021/acsnano.3c11890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
The essential role of the neural network in enhancing bone regeneration has often been overlooked in biomaterial design, leading to delayed or compromised bone healing. Engineered mesenchymal stem cells (MSCs)-derived exosomes are becoming increasingly recognized as potent cell-free agents for manipulating cellular behavior and improving therapeutic effectiveness. Herein, MSCs are stimulated with nerve growth factor (NGF) to regulate exosomal cargoes to improve neuro-promotive potential and facilitate innervated bone regeneration. In vitro cell experiments showed that the NGF-stimulated MSCs-derived exosomes (N-Exos) obviously improved the cellular function and neurotrophic effects of the neural cells, and consequently, the osteogenic potential of the osteo-reparative cells. Bioinformatic analysis by miRNA sequencing and pathway enrichment revealed that the beneficial effects of N-Exos may partly be ascribed to the NGF-elicited multicomponent exosomal miRNAs and the subsequent regulation and activation of the MAPK and PI3K-Akt signaling pathways. On this basis, N-Exos were delivered on the micropores of the 3D-printed hierarchical porous scaffold to accomplish the sustained release profile and extended bioavailability. In a rat model with a distal femoral defect, the N-Exos-functionalized hierarchical porous scaffold significantly induced neurovascular structure formation and innervated bone regeneration. This study provided a feasible strategy to modulate the functional cargoes of MSCs-derived exosomes to acquire desirable neuro-promotive and osteogenic potential. Furthermore, the developed N-Exos-functionalized hierarchical porous scaffold may represent a promising neurovascular-promotive bone reparative scaffold for clinical translation.
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Affiliation(s)
- Meifei Lian
- Department of Oral and Maxillofacial Implantology, Shanghai PerioImplant Innovation Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai 200011, China
- Clinical and Translational Research Center for 3D Printing Technology, Medical 3D Printing Innovation Research Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200125, China
| | - Zhiguang Qiao
- Clinical and Translational Research Center for 3D Printing Technology, Medical 3D Printing Innovation Research Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200125, China
- Department of Bone and Joint Surgery, Department of Orthopedics, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China
| | - Shichong Qiao
- Department of Oral and Maxillofacial Implantology, Shanghai PerioImplant Innovation Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai 200011, China
| | - Xing Zhang
- State Key Laboratory of Mechanical Systems and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jieming Lin
- Department of Bone and Joint Surgery, Department of Orthopedics, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China
| | - Ruida Xu
- Department of Bone and Joint Surgery, Department of Orthopedics, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China
| | - Naifeng Zhu
- Department of Bone and Joint Surgery, Department of Orthopedics, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China
| | - Tianhong Tang
- Department of Prosthodontics, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Zhuoli Huang
- Department of Oral and Maxillofacial Implantology, Shanghai PerioImplant Innovation Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai 200011, China
| | - Wenbo Jiang
- Clinical and Translational Research Center for 3D Printing Technology, Medical 3D Printing Innovation Research Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200125, China
| | - Junyu Shi
- Department of Oral and Maxillofacial Implantology, Shanghai PerioImplant Innovation Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai 200011, China
| | - Yongqiang Hao
- Clinical and Translational Research Center for 3D Printing Technology, Medical 3D Printing Innovation Research Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200125, China
- Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Hongchang Lai
- Department of Oral and Maxillofacial Implantology, Shanghai PerioImplant Innovation Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai 200011, China
| | - Kerong Dai
- Clinical and Translational Research Center for 3D Printing Technology, Medical 3D Printing Innovation Research Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200125, China
- Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
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6
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Chen M, Jiang Z, Zou X, You X, Cai Z, Huang J. Advancements in tissue engineering for articular cartilage regeneration. Heliyon 2024; 10:e25400. [PMID: 38352769 PMCID: PMC10862692 DOI: 10.1016/j.heliyon.2024.e25400] [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: 11/03/2023] [Revised: 01/25/2024] [Accepted: 01/25/2024] [Indexed: 02/16/2024] Open
Abstract
Articular cartilage injury is a prevalent clinical condition resulting from trauma, tumors, infection, osteoarthritis, and other factors. The intrinsic lack of blood vessels, nerves, and lymphatic vessels within cartilage tissue severely limits its self-regenerative capacity after injury. Current treatment options, such as conservative drug therapy and joint replacement, have inherent limitations. Achieving perfect regeneration and repair of articular cartilage remains an ongoing challenge in the field of regenerative medicine. Tissue engineering has emerged as a key focus in articular cartilage injury research, aiming to utilize cultured and expanded tissue cells combined with suitable scaffold materials to create viable, functional tissues. This review article encompasses the latest advancements in seed cells, scaffolds, and cytokines. Additionally, the role of stimulatory factors including cytokines and growth factors, genetic engineering techniques, biophysical stimulation, and bioreactor systems, as well as the role of scaffolding materials including natural scaffolds, synthetic scaffolds, and nanostructured scaffolds in the regeneration of cartilage tissues are discussed. Finally, we also outline the signaling pathways involved in cartilage regeneration. Our review provides valuable insights for scholars to address the complex problem of cartilage regeneration and repair.
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Affiliation(s)
- Maohua Chen
- Department of Plastic Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Zhiyuan Jiang
- Department of Plastic Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Xiuyuan Zou
- Department of Plastic Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Xiaobo You
- Department of Plastic Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Zhen Cai
- Department of Plastic Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Jinming Huang
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, China
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Rodríguez-Montaño ÓL, Vaiani L, Boccaccio A, Uva AE, Lo Muzio L, Spirito F, Dioguardi M, Santacroce L, Di Cosola M, Cantore S, Ballini A. Optimization of Cobalt-Chromium (Co-Cr) Scaffolds for Bone Tissue Engineering in Endocrine, Metabolic and Immune Disorders. Endocr Metab Immune Disord Drug Targets 2024; 24:430-440. [PMID: 37946349 DOI: 10.2174/0118715303258126231025115956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 08/01/2023] [Accepted: 09/21/2023] [Indexed: 11/12/2023]
Abstract
Approximately 50% of the adult global population is projected to suffer from some form of metabolic disease by 2050, including metabolic syndrome and diabetes mellitus. At the same time, this trend indicates a potential increase in the number of patients who will be in need of implant-supported reconstructions of specific bone regions subjected to inflammatory states. Moreover, physiological conditions associated with dysmetabolic subjects have been suggested to contribute to the severity of bone loss after bone implant insertion. However, there is a perspective evidence strengthening the hypothesis that custom-fabricated bioengineered scaffolds may produce favorable bone healing effects in case of altered endocrine or metabolic conditions. This perspective review aims to share a comprehensive knowledge of the mechanisms implicated in bone resorption and remodelling processes, which have driven researchers to develop metallic implants as the cobalt-chromium (Co-Cr) bioscaffolds, presenting optimized geometries that interact in an effective way with the osteogenetic precursor cells, especially in the cases of perturbed endocrine or metabolic conditions.
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Affiliation(s)
| | - Lorenzo Vaiani
- Department of Mechanics, Mathematics and Management, Polytechnic University of Bari, Bari, Italy
| | - Antonio Boccaccio
- Department of Mechanics, Mathematics and Management, Polytechnic University of Bari, Bari, Italy
| | - Antonio Emmanuele Uva
- Department of Mechanics, Mathematics and Management, Polytechnic University of Bari, Bari, Italy
| | - Lorenzo Lo Muzio
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Francesca Spirito
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Mario Dioguardi
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Luigi Santacroce
- Department of Interdisciplinary Medicine, Microbiology and Virology Unit, University of Bari Aldo Moro, Bari, Apulia, Italy
| | - Michele Di Cosola
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Stefania Cantore
- Department of Mechanics, Mathematics and Management, Polytechnic University of Bari, Bari, Italy
- Independent Researcher, Sorriso & Benessere - Ricerca e Clinica, Bari, Italy
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Andrea Ballini
- Department of Mechanics, Mathematics and Management, Polytechnic University of Bari, Bari, Italy
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
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8
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Krasnyakov I, Bratsun D. Cell-Based Modeling of Tissue Developing in the Scaffold Pores of Varying Cross-Sections. Biomimetics (Basel) 2023; 8:562. [PMID: 38132501 PMCID: PMC10741956 DOI: 10.3390/biomimetics8080562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/10/2023] [Accepted: 11/16/2023] [Indexed: 12/23/2023] Open
Abstract
In this work, we present a mathematical model of cell growth in the pores of a perfusion bioreactor through which a nutrient solution is pumped. We have developed a 2-D vertex model that allows us to reproduce the microscopic dynamics of the microenvironment of cells and describe the occupation of the pore space with cells. In this model, each cell is represented by a polygon; the number of vertices and shapes may change over time. The model includes mitotic cell division and intercalation. We study the impact of two factors on cell growth. On the one hand, we consider a channel of variable cross-section, which models a scaffold with a porosity gradient. On the other hand, a cluster of cells grows under the influence of a nutrient solution flow, which establishes a non-uniform distribution of shear stresses in the pore space. We present the results of numerical simulation of the tissue growth in a wavy channel. The model allows us to obtain complete microscopic information that includes the dynamics of intracellular pressure, the local elastic energy, and the characteristics of cell populations. As we showed, in a functional-graded scaffold, the distribution of the shear stresses in the pore space has a complicated structure, which implies the possibility of controlling the growth zones by varying the pore geometry.
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Affiliation(s)
| | - Dmitry Bratsun
- Applied Physics Department, Perm National Research Polytechnic University, 614990 Perm, Russia;
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Yamada S, Ockermann PN, Schwarz T, Mustafa K, Hansmann J. Translation of biophysical environment in bone into dynamic cell culture under flow for bone tissue engineering. Comput Struct Biotechnol J 2023; 21:4395-4407. [PMID: 37711188 PMCID: PMC10498129 DOI: 10.1016/j.csbj.2023.08.008] [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: 05/13/2023] [Revised: 08/14/2023] [Accepted: 08/14/2023] [Indexed: 09/16/2023] Open
Abstract
Bone is a dynamic environment where osteocytes, osteoblasts, and mesenchymal stem/progenitor cells perceive mechanical cues and regulate bone metabolism accordingly. In particular, interstitial fluid flow in bone and bone marrow serves as a primary biophysical stimulus, which regulates the growth and fate of the cellular components of bone. The processes of mechano-sensory and -transduction towards bone formation have been well studied mainly in vivo as well as in two-dimensional (2D) dynamic cell culture platforms, which elucidated mechanically induced osteogenesis starting with anabolic responses, such as production of nitrogen oxide and prostaglandins followed by the activation of canonical Wnt signaling, upon mechanosensation. The knowledge has been now translated into regenerative medicine, particularly into the field of bone tissue engineering, where multipotent stem cells are combined with three-dimensional (3D) scaffolding biomaterials to produce transplantable constructs for bone regeneration. In the presence of 3D scaffolds, the importance of suitable dynamic cell culture platforms increases further not only to improve mass transfer inside the scaffolds but to provide appropriate biophysical cues to guide cell fate. In principle, the concept of dynamic cell culture platforms is rooted to bone mechanobiology. Therefore, this review primarily focuses on biophysical environment in bone and its translation into dynamic cell culture platforms commonly used for 2D and 3D cell expansion, including their advancement, challenges, and future perspectives. Additionally, it provides the literature review of recent empirical studies using 2D and 3D flow-based dynamic cell culture systems for bone tissue engineering.
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Affiliation(s)
- Shuntaro Yamada
- Center of Translational Oral Research-Tissue Engineering, Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Norway
| | - Philipp Niklas Ockermann
- Fraunhofer Institute for Silicate Research ISC, Translational Center Regenerative Therapies, Germany
| | - Thomas Schwarz
- Fraunhofer Institute for Silicate Research ISC, Translational Center Regenerative Therapies, Germany
| | - Kamal Mustafa
- Center of Translational Oral Research-Tissue Engineering, Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Norway
| | - Jan Hansmann
- Fraunhofer Institute for Silicate Research ISC, Translational Center Regenerative Therapies, Germany
- Chair of Tissue Engineering and Regenerative Medicine, University Hospital Würzburg, Germany
- Department of Electrical Engineering, University of Applied Sciences Würzburg-Schweinfurt, Germany
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Yamada S, Yassin MA, Torelli F, Hansmann J, Green JBA, Schwarz T, Mustafa K. Unique osteogenic profile of bone marrow stem cells stimulated in perfusion bioreactor is Rho-ROCK-mediated contractility dependent. Bioeng Transl Med 2023; 8:e10509. [PMID: 37206242 PMCID: PMC10189446 DOI: 10.1002/btm2.10509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/28/2023] [Accepted: 03/04/2023] [Indexed: 03/19/2023] Open
Abstract
The fate determination of bone marrow mesenchymal stem/stromal cells (BMSC) is tightly regulated by mechanical cues, including fluid shear stress. Knowledge of mechanobiology in 2D culture has allowed researchers in bone tissue engineering to develop 3D dynamic culture systems with the potential for clinical translation in which the fate and growth of BMSC are mechanically controlled. However, due to the complexity of 3D dynamic cell culture compared to the 2D counterpart, the mechanisms of cell regulation in the dynamic environment remain relatively undescribed. In the present study, we analyzed the cytoskeletal modulation and osteogenic profiles of BMSC under fluid stimuli in a 3D culture condition using a perfusion bioreactor. BMSC subjected to fluid shear stress (mean 1.56 mPa) showed increased actomyosin contractility, accompanied by the upregulation of mechanoreceptors, focal adhesions, and Rho GTPase-mediated signaling molecules. Osteogenic gene expression profiling revealed that fluid shear stress promoted the expression of osteogenic markers differently from chemically induced osteogenesis. Osteogenic marker mRNA expression, type 1 collagen formation, ALP activity, and mineralization were promoted in the dynamic condition, even in the absence of chemical supplementation. The inhibition of cell contractility under flow by Rhosin chloride, Y27632, MLCK inhibitor peptide-18, or Blebbistatin revealed that actomyosin contractility was required for maintaining the proliferative status and mechanically induced osteogenic differentiation in the dynamic culture. The study highlights the cytoskeletal response and unique osteogenic profile of BMSC in this type of dynamic cell culture, stepping toward the clinical translation of mechanically stimulated BMCS for bone regeneration.
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Affiliation(s)
- Shuntaro Yamada
- Center of Translational Oral Research (TOR)‐Tissue Engineering Group, Department of Clinical Dentistry, Faculty of MedicineUniversity of BergenNorway
| | - Mohammed A. Yassin
- Center of Translational Oral Research (TOR)‐Tissue Engineering Group, Department of Clinical Dentistry, Faculty of MedicineUniversity of BergenNorway
| | - Francesco Torelli
- Center of Translational Oral Research (TOR)‐Tissue Engineering Group, Department of Clinical Dentistry, Faculty of MedicineUniversity of BergenNorway
| | - Jan Hansmann
- Translational Center Regenerative TherapiesFraunhofer Institute for Silicate Research ISCWürzburgGermany
- Chair of Tissue Engineering and Regenerative MedicineUniversity Hospital WürzburgWürzburgGermany
- Department of Electrical EngineeringUniversity of Applied Sciences Würzburg‐SchweinfurtSchweinfurtGermany
| | - Jeremy B. A. Green
- Centre for Craniofacial & Regenerative Biology, Faculty of Dentistry, Oral & Craniofacial SciencesKing's College LondonUK
| | - Thomas Schwarz
- Translational Center Regenerative TherapiesFraunhofer Institute for Silicate Research ISCWürzburgGermany
| | - Kamal Mustafa
- Center of Translational Oral Research (TOR)‐Tissue Engineering Group, Department of Clinical Dentistry, Faculty of MedicineUniversity of BergenNorway
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Popkov A, Kononovich N, Dubinenko G, Gorbach E, Shastov A, Tverdokhlebov S, Popkov D. Long Bone Defect Filling with Bioactive Degradable 3D-Implant: Experimental Study. Biomimetics (Basel) 2023; 8:biomimetics8020138. [PMID: 37092390 PMCID: PMC10123725 DOI: 10.3390/biomimetics8020138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/26/2023] [Accepted: 03/26/2023] [Indexed: 03/30/2023] Open
Abstract
Previously, 3D-printed bone grafts made of titanium alloy with bioactive coating has shown great potential for the restoration of bone defects. Implanted into a medullary canal titanium graft with cellular structure demonstrated stimulation of the reparative osteogenesis and successful osseointegration of the graft into a single bone-implant block. The purpose of this study was to investigate osseointegration of a 3D-printed degradable polymeric implant with cellular structure as preclinical testing of a new technique for bone defect restoration. During an experimental study in sheep, a 20 mm-long segmental tibial defect was filled with an original cylindrical implant with cellular structure made of polycaprolactone coated with hydroxyapatite. X-ray radiographs demonstrated reparative bone regeneration from the periosteum lying on the periphery of cylindrical implant to its center in a week after the surgery. Cellular structure of the implant was fully filled with newly-formed bone tissue on the 4th week after the surgery. The bone tissue regeneration from the proximal and distal bone fragments was evident on 3rd week. This provides insight into the use of bioactive degradable implants for the restoration of segmental bone defects. Degradable implant with bioactive coating implanted into a long bone segmental defect provides stimulation of reparative osteogenesis and osseointegration into the single implant-bone block.
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Hettinger ZR, Hu S, Mamiya H, Sahu A, Iijima H, Wang K, Gilmer G, Miller A, Nasello G, Dâ Amore A, Vorp DA, Rando TA, Xing J, Ambrosio F. Dynamical modeling reveals RNA decay mediates the effect of matrix stiffness on aged muscle stem cell fate. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.24.529950. [PMID: 36865124 PMCID: PMC9980169 DOI: 10.1101/2023.02.24.529950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
Loss of muscle stem cell (MuSC) self-renewal with aging reflects a combination of influences from the intracellular (e.g., post-transcriptional modifications) and extracellular (e.g., matrix stiffness) environment. Whereas conventional single cell analyses have revealed valuable insights into factors contributing to impaired self-renewal with age, most are limited by static measurements that fail to capture nonlinear dynamics. Using bioengineered matrices mimicking the stiffness of young and old muscle, we showed that while young MuSCs were unaffected by aged matrices, old MuSCs were phenotypically rejuvenated by young matrices. Dynamical modeling of RNA velocity vector fields in silico revealed that soft matrices promoted a self-renewing state in old MuSCs by attenuating RNA decay. Vector field perturbations demonstrated that the effects of matrix stiffness on MuSC self-renewal could be circumvented by fine-tuning the expression of the RNA decay machinery. These results demonstrate that post-transcriptional dynamics dictate the negative effect of aged matrices on MuSC self-renewal.
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Efficient calculation of fluid-induced wall shear stress within tissue engineering scaffolds by an empirical model. MEDICINE IN NOVEL TECHNOLOGY AND DEVICES 2023. [DOI: 10.1016/j.medntd.2023.100223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023] Open
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Schröder M, Reseland JE, Haugen HJ. Osteoblasts in a Perfusion Flow Bioreactor-Tissue Engineered Constructs of TiO 2 Scaffolds and Cells for Improved Clinical Performance. Cells 2022; 11:1995. [PMID: 35805079 PMCID: PMC9265932 DOI: 10.3390/cells11131995] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/15/2022] [Accepted: 06/20/2022] [Indexed: 01/25/2023] Open
Abstract
Combining biomaterial scaffolds with cells serves as a promising strategy for engineering critical size defects; however, homogenous cellular growth within large scaffolds is challenging. Mechanical stimuli can enhance bone regeneration by modulating cellular growth and differentiation. Here, we compare dynamic seeding in a perfusion flow bioreactor with static seeding for a synthetic bone scaffold for up to 21 days using the cell line MC3T3-E1 and primary human osteoblast, confocal laser scanning microscopy, and real-time reverse transcriptase-polymerase chain reaction. The secretion of bone-related proteins was quantified using multiplex immunoassays. Dynamic culture improved cellular distribution through the TiO2 scaffold and induced a five-fold increase in cell number after 21 days. The relative mRNA expression of osteopontin of MC3T3-E1 was 40-fold enhanced after 7 and 21 days at a flow rate of 0.08 mL/min, and that of collagen type I alpha I expression was 18-fold after 21 days. A flow rate of 0.16 mL/min was 10-fold less effective. Dynamic culture increased the levels of dickkopf-related protein 1 (60-fold), osteoprotegrin (29-fold), interleukin-6 (23-fold), interleukin-8 (36-fold), monocyte chemoattractant protein 1 (28-fold) and vascular endothelial growth factor (6-fold) in the medium of primary human osteoblasts after 21 days compared to static seeding. The proposed method may have clinical potential for bone tissue engineering.
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Affiliation(s)
| | | | - Håvard Jostein Haugen
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, NO-0317 P.O. Box 1109 Blindern Oslo, Norway; (M.S.); (J.E.R.)
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