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Soliman BG, Longoni A, Major GS, Lindberg GCJ, Choi YS, Zhang YS, Woodfield TBF, Lim KS. Harnessing Macromolecular Chemistry to Design Hydrogel Micro- and Macro-Environments. Macromol Biosci 2024; 24:e2300457. [PMID: 38035637 DOI: 10.1002/mabi.202300457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 11/16/2023] [Indexed: 12/02/2023]
Abstract
Cell encapsulation within three-dimensional hydrogels is a promising approach to mimic tissues. However, true biomimicry of the intricate microenvironment, biophysical and biochemical gradients, and the macroscale hierarchical spatial organizations of native tissues is an unmet challenge within tissue engineering. This review provides an overview of the macromolecular chemistries that have been applied toward the design of cell-friendly hydrogels, as well as their application toward controlling biophysical and biochemical bulk and gradient properties of the microenvironment. Furthermore, biofabrication technologies provide the opportunity to simultaneously replicate macroscale features of native tissues. Biofabrication strategies are reviewed in detail with a particular focus on the compatibility of these strategies with the current macromolecular toolkit described for hydrogel design and the challenges associated with their clinical translation. This review identifies that the convergence of the ever-expanding macromolecular toolkit and technological advancements within the field of biofabrication, along with an improved biological understanding, represents a promising strategy toward the successful tissue regeneration.
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Affiliation(s)
- Bram G Soliman
- School of Materials Science and Engineering, University of New South Wales, Sydney, 2052, Australia
| | - Alessia Longoni
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, 3584CX, The Netherlands
| | - Gretel S Major
- Department of Orthopedic Surgery and Musculoskeletal Medicine, University of Otago, Christchurch, 8011, New Zealand
| | - Gabriella C J Lindberg
- Phil and Penny Knight Campus for Accelerating Scientific Impact Department of Bioengineering, University of Oregon, Eugene, OR, 97403, USA
| | - Yu Suk Choi
- School of Human Sciences, The University of Western Australia, Perth, 6009, Australia
| | - Yu Shrike Zhang
- Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, 02115, USA
| | - Tim B F Woodfield
- Department of Orthopedic Surgery and Musculoskeletal Medicine, University of Otago, Christchurch, 8011, New Zealand
| | - Khoon S Lim
- Department of Orthopedic Surgery and Musculoskeletal Medicine, University of Otago, Christchurch, 8011, New Zealand
- School of Medical Sciences, University of Sydney, Sydney, 2006, Australia
- Charles Perkins Centre, University of Sydney, Sydney, 2006, Australia
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2
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Chen Z, Zhao Q, Chen L, Gao S, Meng L, Liu Y, Wang Y, Li T, Xue J. MAGP2 promotes osteogenic differentiation during fracture healing through its crosstalk with the β-catenin pathway. J Cell Physiol 2024; 239:e31183. [PMID: 38348695 DOI: 10.1002/jcp.31183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 12/06/2023] [Accepted: 12/12/2023] [Indexed: 04/12/2024]
Abstract
Osteogenic differentiation is important for fracture healing. Microfibrial-associated glycoprotein 2 (MAGP2) is found to function as a proangiogenic regulator in bone formation; however, its role in osteogenic differentiation during bone repair is not clear. Here, a mouse model of critical-sized femur fracture was constructed, and the adenovirus expressing MAGP2 was delivered into the fracture site. Mice with MAGP2 overexpression exhibited increased bone mineral density and bone volume fraction (BV/TV) at Day 14 postfracture. Within 7 days postfracture, overexpression of MAGP2 increased collagen I and II expression at the fracture callus, with increasing chondrogenesis. MAGP2 inhibited collagen II level but elevated collagen I by 14 days following fracture, accompanied by increased endochondral bone formation. In mouse osteoblast precursor MC3T3-E1 cells, MAGP2 treatment elevated the expression of osteoblastic factors (osterix, BGLAP and collagen I) and enhanced ALP activity and mineralization through activating β-catenin signaling after osteogenic induction. Besides, MAGP2 could interact with lipoprotein receptor-related protein 5 (LRP5) and upregulated its expression. Promotion of osteogenic differentiation and β-catenin activation mediated by MAGP2 was partially reversed by LRP5 knockdown. Interestingly, β-catenin/transcription factor 4 (TCF4) increased MAGP2 expression probably by binding to MAGP2 promoter. These findings suggest that MAGP2 may interact with β-catenin/TCF4 to enhance β-catenin/TCF4's function and activate LRP5-activated β-catenin signaling pathway, thus promoting osteogenic differentiation for fracture repair. mRNA sequencing identified the potential targets of MAGP2, providing novel insights into MAGP2 function and the directions for future research.
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Affiliation(s)
- Zhiguang Chen
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Qi Zhao
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Lianghong Chen
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Songlan Gao
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Lingshuai Meng
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yingjie Liu
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yu Wang
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Tiegang Li
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Jinqi Xue
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
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3
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Du T, Liu J, Dong J, Xie H, Wang X, Yang X, Yang Y. Multifunctional coatings of nickel-titanium implant toward promote osseointegration after operation of bone tumor and clinical application: a review. Front Bioeng Biotechnol 2024; 12:1325707. [PMID: 38444648 PMCID: PMC10912669 DOI: 10.3389/fbioe.2024.1325707] [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: 11/18/2023] [Accepted: 01/29/2024] [Indexed: 03/07/2024] Open
Abstract
Metal implants, especially Ni-Ti shape memory alloy (Ni-Ti SMA) implants, have increasingly become the first choice for fracture and massive bone defects after orthopedic bone tumor surgery. In this paper, the internal composition and shape memory properties of Ni-Ti shape memory alloy were studied. In addition, the effects of porous Ni-Ti SMA on osseointegration, and the effects of surface hydrophobicity and hydrophilicity on the osseointegration of Ni-Ti implants were also investigated. In addition, the effect of surface coating modification technology of Ni-Ti shape memory alloy on bone bonding was also studied. Several kinds of Ni-Ti alloy implants commonly used in orthopedic clinic and their advantages and disadvantages were introduced. The surface changes of Ni-Ti alloy implants promote bone fusion, enhance the adhesion of red blood cells and platelets, promote local tissue regeneration and fracture healing. In the field of orthopaedics, the use of Ni-Ti shape memory alloy implants significantly promoted clinical development. Due to the introduction of the coating, the osseointegration and biocompatibility of the implant surface have been enhanced, and the success rate of the implant has been greatly improved.
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Affiliation(s)
- Tianhao Du
- Department of Rehabilitation Medicine, General Hospital of Northern Theater Command, Shenyang, China
- Liaoning University of traditional Chinese Medicine, Shenyang, China
| | - Jia Liu
- Liaoning University of traditional Chinese Medicine, Shenyang, China
| | - Jinhan Dong
- Liaoning University of traditional Chinese Medicine, Shenyang, China
| | - Haoxu Xie
- Department of Rehabilitation Medicine, General Hospital of Northern Theater Command, Shenyang, China
- Liaoning University of traditional Chinese Medicine, Shenyang, China
| | - Xiao Wang
- Department of Rehabilitation Medicine, General Hospital of Northern Theater Command, Shenyang, China
- Liaoning University of traditional Chinese Medicine, Shenyang, China
| | - Xu Yang
- Liaoning University of traditional Chinese Medicine, Shenyang, China
| | - Yingxin Yang
- Liaoning University of traditional Chinese Medicine, Shenyang, China
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4
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Tan S, Qiu Y, Xiong H, Wang C, Chen Y, Wu W, Yang Z, Zhao F. Mussel-inspired cortical bone-adherent bioactive composite hydrogels promote bone augmentation through sequential regulation of endochondral ossification. Mater Today Bio 2023; 23:100843. [PMID: 37942424 PMCID: PMC10628777 DOI: 10.1016/j.mtbio.2023.100843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 10/11/2023] [Accepted: 10/22/2023] [Indexed: 11/10/2023] Open
Abstract
Endochondral ossification (ECO) plays an integral part in bone augmentation, which undergoes sequential processes including mesenchymal stem cells (MSC) condensation, chondrocyte differentiation, chondrocyte hypertrophy, and mineralized bone formation. Thus, accelerating these steps will speed up the osteogenesis process through ECO. Herein, inspired by the marine mussels' adhesive mechanism, a bioactive glass-dopamine (BG-Dopa) hydrogel was prepared by distributing the micro-nano BG to aldehyde modified hyaluronic acid with dopamine-modified gelatin. By in vitro and in vivo experiments, we confirm that after implanting in the bone augmentation position, the hydrogel can adhere to the cortical bone surface firmly without sliding. Moreover, the condensation and hypertrophy of stem cells were accelerated at the early stage of ECO. Whereafter, the osteogenic differentiation of the hypertrophic chondrocytes was promoted, which lead to accelerating the late stage of ECO process to achieve more bone augmentation. This experiment provides a new idea for the design of bone augmentation materials.
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Affiliation(s)
- Shuyi Tan
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, 510280, China
| | - Yonghao Qiu
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, 510280, China
| | - Huacui Xiong
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, 510280, China
| | - Chunhui Wang
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, 510280, China
| | - Yifan Chen
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, 510280, China
| | - Wangxi Wu
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, 510280, China
| | - Zhen Yang
- Center for Health Science and Engineering, Hebei Key Laboratory of Biomaterials and Smart Theranostics, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, 300131, China
| | - Fujian Zhao
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, 510280, China
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5
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Al Maruf DSA, Cheng K, Xin H, Cheung VKY, Foley M, Wise IK, Lewin W, Froggatt C, Wykes J, Parthasarathi K, Leinkram D, Howes D, Suchowerska N, McKenzie DR, Gupta R, Crook JM, Clark JR. A Comparison of In Vivo Bone Tissue Generation Using Calcium Phosphate Bone Substitutes in a Novel 3D Printed Four-Chamber Periosteal Bioreactor. Bioengineering (Basel) 2023; 10:1233. [PMID: 37892963 PMCID: PMC10604717 DOI: 10.3390/bioengineering10101233] [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: 07/06/2023] [Revised: 10/10/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023] Open
Abstract
Autologous bone replacement remains the preferred treatment for segmental defects of the mandible; however, it cannot replicate complex facial geometry and causes donor site morbidity. Bone tissue engineering has the potential to overcome these limitations. Various commercially available calcium phosphate-based bone substitutes (Novabone®, BioOss®, and Zengro®) are commonly used in dentistry for small bone defects around teeth and implants. However, their role in ectopic bone formation, which can later be applied as vascularized graft in a bone defect, is yet to be explored. Here, we compare the above-mentioned bone substitutes with autologous bone with the aim of selecting one for future studies of segmental mandibular repair. Six female sheep, aged 7-8 years, were implanted with 40 mm long four-chambered polyether ether ketone (PEEK) bioreactors prepared using additive manufacturing followed by plasma immersion ion implantation (PIII) to improve hydrophilicity and bioactivity. Each bioreactor was wrapped with vascularized scapular periosteum and the chambers were filled with autologous bone graft, Novabone®, BioOss®, and Zengro®, respectively. The bioreactors were implanted within a subscapular muscle pocket for either 8 weeks (two sheep), 10 weeks (two sheep), or 12 weeks (two sheep), after which they were removed and assessed by microCT and routine histology. Moderate bone formation was observed in autologous bone grafts, while low bone formation was observed in the BioOss® and Zengro® chambers. No bone formation was observed in the Novabone® chambers. Although the BioOss® and Zengro® chambers contained relatively small amounts of bone, endochondral ossification and retained hydroxyapatite suggest their potential in new bone formation in an ectopic site if a consistent supply of progenitor cells and/or growth factors can be ensured over a longer duration.
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Affiliation(s)
- D. S. Abdullah Al Maruf
- Integrated Prosthetics and Reconstruction, Department of Head and Neck Surgery, Chris O’Brien Lifehouse, Camperdown, NSW 2050, Australia; (D.S.A.A.M.); (H.X.); (C.F.); (J.W.); (K.P.); (D.L.); (D.H.)
- Central Clinical School, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia
| | - Kai Cheng
- Royal Prince Alfred Institute of Academic Surgery, Sydney Local Health District, Camperdown, NSW 2050, Australia;
| | - Hai Xin
- Integrated Prosthetics and Reconstruction, Department of Head and Neck Surgery, Chris O’Brien Lifehouse, Camperdown, NSW 2050, Australia; (D.S.A.A.M.); (H.X.); (C.F.); (J.W.); (K.P.); (D.L.); (D.H.)
- Central Clinical School, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia
| | - Veronica K. Y. Cheung
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital, Camperdown, NSW 2050, Australia; (V.K.Y.C.); (R.G.)
- Sydney Medical School, Faculty of Medicine and Health Sciences, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Matthew Foley
- Sydney Microscopy & Microanalysis, The University of Sydney, Camperdown, NSW 2006, Australia;
| | - Innes K. Wise
- Laboratory Animal Services, The University of Sydney, Camperdown, NSW 2050, Australia;
| | - Will Lewin
- Arto Hardy Family Biomedical Innovation Hub, Chris O’Brien Lifehouse, Camperdown, NSW 2050, Australia; (W.L.); (D.R.M.); (J.M.C.)
- Sarcoma and Surgical Research Centre, Chris O’Brien Lifehouse, Camperdown, NSW 2050, Australia
| | - Catriona Froggatt
- Integrated Prosthetics and Reconstruction, Department of Head and Neck Surgery, Chris O’Brien Lifehouse, Camperdown, NSW 2050, Australia; (D.S.A.A.M.); (H.X.); (C.F.); (J.W.); (K.P.); (D.L.); (D.H.)
| | - James Wykes
- Integrated Prosthetics and Reconstruction, Department of Head and Neck Surgery, Chris O’Brien Lifehouse, Camperdown, NSW 2050, Australia; (D.S.A.A.M.); (H.X.); (C.F.); (J.W.); (K.P.); (D.L.); (D.H.)
| | - Krishnan Parthasarathi
- Integrated Prosthetics and Reconstruction, Department of Head and Neck Surgery, Chris O’Brien Lifehouse, Camperdown, NSW 2050, Australia; (D.S.A.A.M.); (H.X.); (C.F.); (J.W.); (K.P.); (D.L.); (D.H.)
| | - David Leinkram
- Integrated Prosthetics and Reconstruction, Department of Head and Neck Surgery, Chris O’Brien Lifehouse, Camperdown, NSW 2050, Australia; (D.S.A.A.M.); (H.X.); (C.F.); (J.W.); (K.P.); (D.L.); (D.H.)
- Royal Prince Alfred Institute of Academic Surgery, Sydney Local Health District, Camperdown, NSW 2050, Australia;
| | - Dale Howes
- Integrated Prosthetics and Reconstruction, Department of Head and Neck Surgery, Chris O’Brien Lifehouse, Camperdown, NSW 2050, Australia; (D.S.A.A.M.); (H.X.); (C.F.); (J.W.); (K.P.); (D.L.); (D.H.)
| | - Natalka Suchowerska
- School of Physics, Faculty of Science, The University of Sydney, Camperdown, NSW 2050, Australia;
| | - David R. McKenzie
- Arto Hardy Family Biomedical Innovation Hub, Chris O’Brien Lifehouse, Camperdown, NSW 2050, Australia; (W.L.); (D.R.M.); (J.M.C.)
- School of Physics, Faculty of Science, The University of Sydney, Camperdown, NSW 2050, Australia;
| | - Ruta Gupta
- Department of Tissue Pathology and Diagnostic Oncology, NSW Health Pathology, Royal Prince Alfred Hospital, Camperdown, NSW 2050, Australia; (V.K.Y.C.); (R.G.)
- Sydney Medical School, Faculty of Medicine and Health Sciences, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Jeremy M. Crook
- Arto Hardy Family Biomedical Innovation Hub, Chris O’Brien Lifehouse, Camperdown, NSW 2050, Australia; (W.L.); (D.R.M.); (J.M.C.)
- Sarcoma and Surgical Research Centre, Chris O’Brien Lifehouse, Camperdown, NSW 2050, Australia
- Intelligent Polymer Research Institute, AIIM Facility, The University of Wollongong, Wollongong, NSW 2522, Australia
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia
| | - Jonathan R. Clark
- Integrated Prosthetics and Reconstruction, Department of Head and Neck Surgery, Chris O’Brien Lifehouse, Camperdown, NSW 2050, Australia; (D.S.A.A.M.); (H.X.); (C.F.); (J.W.); (K.P.); (D.L.); (D.H.)
- Central Clinical School, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia
- Royal Prince Alfred Institute of Academic Surgery, Sydney Local Health District, Camperdown, NSW 2050, Australia;
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6
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Nakagawa S, Ando W, Shimomura K, Hart DA, Hanai H, Jacob G, Chijimatsu R, Yarimitu S, Fujie H, Okada S, Tsumaki N, Nakamura N. Repair of osteochondral defects: efficacy of a tissue-engineered hybrid implant containing both human MSC and human iPSC-cartilaginous particles. NPJ Regen Med 2023; 8:59. [PMID: 37857652 PMCID: PMC10587071 DOI: 10.1038/s41536-023-00335-x] [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: 10/24/2022] [Accepted: 10/09/2023] [Indexed: 10/21/2023] Open
Abstract
Both mesenchymal stromal cells (MSC) and induced pluripotent stem cells (iPSC) offer the potential for repair of damaged connective tissues. The use of hybrid implants containing both human MSC and iPSC was investigated to assess their combined potential to yield enhanced repair of osteochondral defects. Human iPSC-CP wrapped with tissue engineered constructs (TEC) containing human MSC attained secure defect filling with good integration to adjacent tissue in a rat osteochondral injury model. The presence of living MSC in the hybrid implants was required for effective biphasic osteochondral repair. Thus, the TEC component of such hybrid implants serves several critical functions including, adhesion to the defect site via the matrix and facilitation of the repair via live MSC, as well as enhanced angiogenesis and neovascularization. Based on these encouraging studies, such hybrid implants may offer an effective future intervention for repair of complex osteochondral defects.
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Affiliation(s)
- Shinichi Nakagawa
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Suita, 565-0871, Japan
| | - Wataru Ando
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Suita, 565-0871, Japan.
- Department of Orthopaedic Surgery, Kansai Rosai Hospital, Amagasaki, 660-8511, Japan.
| | - Kazunori Shimomura
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Suita, 565-0871, Japan
| | - David A Hart
- McCaig Institute for Bone and Joint Health, Department of Surgery and Faculty of Kinesiology, University of Calgary, Calgary, AB, T2N 4N1, Canada
| | - Hiroto Hanai
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Suita, 565-0871, Japan
| | - George Jacob
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Suita, 565-0871, Japan
| | - Ryota Chijimatsu
- Department of Medical Data Science, Osaka University Graduate School of Medicine, Suita, 565-0871, Japan
| | - Seido Yarimitu
- Department of Mechanical Systems Engineering, Faculty of Systems Design, Tokyo Metropolitan University, Hachioji, 192-0364, Japan
| | - Hiromichi Fujie
- Department of Mechanical Systems Engineering, Faculty of Systems Design, Tokyo Metropolitan University, Hachioji, 192-0364, Japan
| | - Seiji Okada
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Suita, 565-0871, Japan
| | - Noriyuki Tsumaki
- Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, Kyoto, 606-8507, Japan
- Department of Tissue Biochemistry, Graduate School of Medicine and Frontier Biosciences, Osaka University, Suita, 565-0871, Japan
| | - Norimasa Nakamura
- Institute for Medical Science in Sports, Osaka Health Science University, Osaka, 530-0043, Japan
- Center for Advanced Medical Engineering and Informatics, Osaka University, Suita, 565-0871, Japan
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7
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Li T, Ma Z, Zhang Y, Yang Z, Li W, Lu D, Liu Y, Qiang L, Wang T, Ren Y, Wang W, He H, Zhou X, Mao Y, Zhu J, Wang J, Chen X, Dai K. Regeneration of Humeral Head Using a 3D Bioprinted Anisotropic Scaffold with Dual Modulation of Endochondral Ossification. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2205059. [PMID: 36755334 PMCID: PMC10131811 DOI: 10.1002/advs.202205059] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/06/2022] [Indexed: 06/18/2023]
Abstract
Tissue engineering is theoretically thought to be a promising method for the reconstruction of biological joints, and thus, offers a potential treatment alternative for advanced osteoarthritis. However, to date, no significant progress is made in the regeneration of large biological joints. In the current study, a biomimetic scaffold for rabbit humeral head regeneration consisting of heterogeneous porous architecture, various bioinks, and different hard supporting materials in the cartilage and bone regions is designed and fabricated in one step using 3D bioprinting technology. Furthermore, orchestrated dynamic mechanical stimulus combined with different biochemical cues (parathyroid hormone [PTH] and chemical component hydroxyapatite [HA] in the outer and inner region, respectively) are used for dual regulation of endochondral ossification. Specifically, dynamic mechanical stimulus combined with growth factor PTH in the outer region inhibits endochondral ossification and results in cartilage regeneration, whereas dynamic mechanical stimulus combined with HA in the inner region promotes endochondral ossification and results in efficient subchondral bone regeneration. The strategy established in this study with the dual modulation of endochondral ossification for 3D bioprinted anisotropic scaffolds represents a versatile and scalable approach for repairing large joints.
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Affiliation(s)
- Tao Li
- Shanghai Key Laboratory of Orthopaedic ImplantDepartment of Orthopaedic SurgeryShanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine639 Zhizaoju RdShanghai200011China
- Department of OrthopaedicsXinhua Hospital affiliated to Shanghai Jiaotong University School of MedicineNo. 1665 Kongjiang RoadShanghai200092P. R. China
| | - Zhengjiang Ma
- Shanghai Key Laboratory of Orthopaedic ImplantDepartment of Orthopaedic SurgeryShanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine639 Zhizaoju RdShanghai200011China
| | - Yuxin Zhang
- Department of Oral SurgeryShanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineCollege of StomatologyShanghai Jiao Tong UniversityNational Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghai200011China
| | - Zezheng Yang
- Department of OrthopedicsThe Fifth People's Hospital of ShanghaiFudan UniversityMinhang DistrictShanghai200240P. R. China
| | - Wentao Li
- Shanghai Key Laboratory of Orthopaedic ImplantDepartment of Orthopaedic SurgeryShanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine639 Zhizaoju RdShanghai200011China
| | - Dezhi Lu
- School of MedicineShanghai UniversityJing An DistrictShanghai200444China
| | - Yihao Liu
- Shanghai Key Laboratory of Orthopaedic ImplantDepartment of Orthopaedic SurgeryShanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine639 Zhizaoju RdShanghai200011China
| | - Lei Qiang
- Southwest JiaoTong University College of MedicineNo. 111 North 1st Section of Second Ring RoadChengdu610036China
| | - Tianchang Wang
- Shanghai Key Laboratory of Orthopaedic ImplantDepartment of Orthopaedic SurgeryShanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine639 Zhizaoju RdShanghai200011China
| | - Ya Ren
- Southwest JiaoTong University College of MedicineNo. 111 North 1st Section of Second Ring RoadChengdu610036China
| | - Wenhao Wang
- Southwest JiaoTong University College of MedicineNo. 111 North 1st Section of Second Ring RoadChengdu610036China
| | - Hongtao He
- The Third Ward of Department of OrthopedicsThe Second Hospital of Dalian Medical UniversityNo. 467, Zhongshan Road, Shahekou DistrictDalianLiaoning Province116000P. R. China
| | - Xiaojun Zhou
- College of Biological Science and Medical EngineeringState Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsDonghua UniversityShanghai201620P. R. China
| | - Yuanqing Mao
- Shanghai Key Laboratory of Orthopaedic ImplantDepartment of Orthopaedic SurgeryShanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine639 Zhizaoju RdShanghai200011China
| | - Junfeng Zhu
- Department of OrthopaedicsXinhua Hospital affiliated to Shanghai Jiaotong University School of MedicineNo. 1665 Kongjiang RoadShanghai200092P. R. China
| | - Jinwu Wang
- Shanghai Key Laboratory of Orthopaedic ImplantDepartment of Orthopaedic SurgeryShanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine639 Zhizaoju RdShanghai200011China
| | - Xiaodong Chen
- Department of OrthopaedicsXinhua Hospital affiliated to Shanghai Jiaotong University School of MedicineNo. 1665 Kongjiang RoadShanghai200092P. R. China
| | - Kerong Dai
- Shanghai Key Laboratory of Orthopaedic ImplantDepartment of Orthopaedic SurgeryShanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine639 Zhizaoju RdShanghai200011China
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8
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Hochmann S, Ou K, Poupardin R, Mittermeir M, Textor M, Ali S, Wolf M, Ellinghaus A, Jacobi D, Elmiger JAJ, Donsante S, Riminucci M, Schäfer R, Kornak U, Klein O, Schallmoser K, Schmidt-Bleek K, Duda GN, Polansky JK, Geissler S, Strunk D. The enhancer landscape predetermines the skeletal regeneration capacity of stromal cells. Sci Transl Med 2023; 15:eabm7477. [PMID: 36947595 DOI: 10.1126/scitranslmed.abm7477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
Multipotent stromal cells are considered attractive sources for cell therapy and tissue engineering. Despite numerous experimental and clinical studies, broad application of stromal cell therapeutics is not yet emerging. A major challenge is the functional diversity of available cell sources. Here, we investigated the regenerative potential of clinically relevant human stromal cells from bone marrow (BMSCs), white adipose tissue, and umbilical cord compared with mature chondrocytes and skin fibroblasts in vitro and in vivo. Although all stromal cell types could express transcription factors related to endochondral ossification, only BMSCs formed cartilage discs in vitro that fully regenerated critical-size femoral defects after transplantation into mice. We identified cell type-specific epigenetic landscapes as the underlying molecular mechanism controlling transcriptional stromal differentiation networks. Binding sites of commonly expressed transcription factors in the enhancer and promoter regions of ossification-related genes, including Runt and bZIP families, were accessible only in BMSCs but not in extraskeletal stromal cells. This suggests an epigenetically predetermined differentiation potential depending on cell origin that allows common transcription factors to trigger distinct organ-specific transcriptional programs, facilitating forward selection of regeneration-competent cell sources. Last, we demonstrate that viable human BMSCs initiated defect healing through the secretion of osteopontin and contributed to transient mineralized bone hard callus formation after transplantation into immunodeficient mice, which was eventually replaced by murine recipient bone during final tissue remodeling.
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Affiliation(s)
- Sarah Hochmann
- Cell Therapy Institute, Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University (PMU), 5020 Salzburg, Austria
| | - Kristy Ou
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), T Cell Epigenetics, Augustenburger Platz 1, 13353 Berlin, Germany
| | - Rodolphe Poupardin
- Cell Therapy Institute, Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University (PMU), 5020 Salzburg, Austria
| | - Michaela Mittermeir
- Cell Therapy Institute, Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University (PMU), 5020 Salzburg, Austria
| | - Martin Textor
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Augustenburger Platz 1, 13353 Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute (JWI), Augustenburger Platz 1, 13353 Berlin, Germany
| | - Salaheddine Ali
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Augustenburger Platz 1, 13353 Berlin, Germany
- Institute for Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
- Max Planck Institute for Molecular Genetics, 14195 Berlin, Germany
| | - Martin Wolf
- Cell Therapy Institute, Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University (PMU), 5020 Salzburg, Austria
| | - Agnes Ellinghaus
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Augustenburger Platz 1, 13353 Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute (JWI), Augustenburger Platz 1, 13353 Berlin, Germany
| | - Dorit Jacobi
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Augustenburger Platz 1, 13353 Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute (JWI), Augustenburger Platz 1, 13353 Berlin, Germany
| | - Juri A J Elmiger
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Augustenburger Platz 1, 13353 Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute (JWI), Augustenburger Platz 1, 13353 Berlin, Germany
| | - Samantha Donsante
- Department of Molecular Medicine, Sapienza University of Rome, 00189 Rome, Italy
| | - Mara Riminucci
- Department of Molecular Medicine, Sapienza University of Rome, 00189 Rome, Italy
| | - Richard Schäfer
- Institute for Transfusion Medicine and Immunohematology, Goethe University Hospital, German Red Cross Blood Service Baden-Württemberg-Hessen gGmbH, 60323 Frankfurt am Main, Germany
- Institute for Transfusion Medicine and Gene Therapy, Medical Center - University of Freiburg, 79106 Freiburg, Germany
| | - Uwe Kornak
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Augustenburger Platz 1, 13353 Berlin, Germany
- Institute for Medical Genetics and Human Genetics, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
- Max Planck Institute for Molecular Genetics, 14195 Berlin, Germany
- Institute of Human Genetics, University Medical Center Göttingen, 37073 Göttingen, Germany
| | - Oliver Klein
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Augustenburger Platz 1, 13353 Berlin, Germany
| | | | - Katharina Schmidt-Bleek
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Augustenburger Platz 1, 13353 Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute (JWI), Augustenburger Platz 1, 13353 Berlin, Germany
| | - Georg N Duda
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Augustenburger Platz 1, 13353 Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute (JWI), Augustenburger Platz 1, 13353 Berlin, Germany
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Julia K Polansky
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), T Cell Epigenetics, Augustenburger Platz 1, 13353 Berlin, Germany
- German Rheumatism Research Centre (DRFZ), 10117 Berlin, Germany
| | - Sven Geissler
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Augustenburger Platz 1, 13353 Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute (JWI), Augustenburger Platz 1, 13353 Berlin, Germany
- Berlin Center for Advanced Therapies (BECAT), Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Dirk Strunk
- Cell Therapy Institute, Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University (PMU), 5020 Salzburg, Austria
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9
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Yang R, Wang R, Abbaspoor S, Rajan M, Turki Jalil A, Mahmood Saleh M, Wang W. In vitro and in vivo evaluation of hydrogel-based scaffold for bone tissue engineering application. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023] Open
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10
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Gupta A, Mehta SK, Kumar A, Singh S. Advent of phytobiologics and nano-interventions for bone remodeling: a comprehensive review. Crit Rev Biotechnol 2023; 43:142-169. [PMID: 34957903 DOI: 10.1080/07388551.2021.2010031] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Bone metabolism constitutes the intricate processes of matrix deposition, mineralization, and resorption. Any imbalance in these processes leads to traumatic bone injuries and serious disease conditions. Therefore, bone remodeling plays a crucial role during the regeneration process maintaining the balance between osteoblastogenesis and osteoclastogenesis. Currently, numerous phytobiologics are emerging as the new therapeutics for the treatment of bone-related complications overcoming the synthetic drug-based side effects. They can either target osteoblasts, osteoclasts, or both through different mechanistic pathways for maintaining the bone remodeling process. Although phytobiologics have been widely used since tradition for the treatment of bone fractures recently, the research is accentuated toward the development of osteogenic phytobioactives, constituent-based drug designing models, and efficacious delivery of the phytobioactives. To achieve this, different plant extracts and successful isolation of their phytoconstituents are critical for osteogenic research. Hence, this review emphasizes the phytobioactives based research specifically enlisting the plants and their constituents used so far as bone therapeutics, their respective isolation procedures, and nanotechnological interventions in bone research. Also, the review enlists the vast array of folklore plants and the newly emerging nano-delivery systems in treating bone injuries as the future scope of research in the phytomedicinal orthopedic applications.
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Affiliation(s)
- Archita Gupta
- Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, India
| | - Sanjay Kumar Mehta
- Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, India
| | - Ashok Kumar
- Department of Biological Science and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, India.,Centre for Environmental Sciences and Engineering, Indian Institute of Technology Kanpur, Kanpur, India.,The Mehta Family Centre for Engineering in Medicine, Indian Institute of Technology Kanpur, Kanpur, India.,Centre for Nanosciences, Indian Institute of Technology Kanpur, Kanpur, India
| | - Sneha Singh
- Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, India
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11
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Shimo T, Takebe H, Fujii S, Hosoya A. Immunohistochemical Analysis of CCN2 in Experimental Fracture Healing Models. Methods Mol Biol 2023; 2582:335-342. [PMID: 36370361 DOI: 10.1007/978-1-0716-2744-0_23] [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: 06/16/2023]
Abstract
Skeletal fractures are most common large-organ traumatic injuries that impact the functions and esthetic outcomes and quality of life. Unfortunately, infection during the fracture healing process and inadequate blood supply to the bone impede reduced ability to produce cartilage and effective bone callus formation, leading to nonunion or delayed union fracture. Therefore, studying the mechanism of fracture healing is an important task in solving the problem of fracture healing failure. Animal models of bone fracture healing are important tools to investigate the pathogenesis and develop treatment strategies. This protocol introduces researchers to a bone repair model utilizing the ribs of rats and the immunohistological expression of cellular communication network factor/connective tissue growth factor (CTGF/CCN2) during the fracture healing processes.
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Affiliation(s)
- Tsuyoshi Shimo
- Division of Reconstructive Surgery for Oral and Maxillofacial Region, Department of Human Biology and Pathophysiology, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan.
| | - Hiroaki Takebe
- Division of Histology, Department of Oral Growth and Development, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - Saki Fujii
- Division of Reconstructive Surgery for Oral and Maxillofacial Region, Department of Human Biology and Pathophysiology, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - Akihiro Hosoya
- Division of Histology, Department of Oral Growth and Development, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
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12
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Nadine S, Fernandes IJ, Correia CR, Mano JF. Close-to-native bone repair via tissue-engineered endochondral ossification approaches. iScience 2022; 25:105370. [PMID: 36339269 PMCID: PMC9626746 DOI: 10.1016/j.isci.2022.105370] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
In order to solve the clinical challenges related to bone grafting, several tissue engineering (TE) strategies have been proposed to repair critical-sized defects. Generally, the classical TE approaches are designed to promote bone repair via intramembranous ossification. Although promising, strategies that direct the osteogenic differentiation of mesenchymal stem/stromal cells are usually characterized by a lack of functional vascular supply, often resulting in necrotic cores. A less explored alternative is engineering bone constructs through a cartilage-mediated approach, resembling the embryological process of endochondral ossification. The remodeling of an intermediary hypertrophic cartilaginous template triggers vascular invasion and bone tissue deposition. Thus, employing this knowledge can be a promising direction for the next generation of bone TE constructs. This review highlights the most recent biomimetic strategies for applying endochondral ossification in bone TE while discussing the plethora of cell types, culture conditions, and biomaterials essential to promote a successful bone regeneration process.
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13
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van der Heide D, Cidonio G, Stoddart M, D'Este M. 3D printing of inorganic-biopolymer composites for bone regeneration. Biofabrication 2022; 14. [PMID: 36007496 DOI: 10.1088/1758-5090/ac8cb2] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 08/25/2022] [Indexed: 11/12/2022]
Abstract
In most cases, bone injuries heal without complications, however, there is an increasing number of instances where bone healing needs major clinical intervention. Available treatment options have severe drawbacks, such as donor site morbidity and limited availability for autografting. Bone graft substitutes containing growth factors would be a viable alternative, however they have been associated with dose-related safety concerns and lack control over spatial architecture to anatomically match bone defect sites. 3D printing offers a solution to produce patient specific bone graft substitutes that are customized to the patient bone defect with temporal control over the incorporated therapeutics to maximize their efficacy. Inspired by the natural constitution of bone tissue, composites made of inorganic phases, such as nanosilicate particles, calcium phosphate, and bioactive glasses, combined with biopolymer matrices have been investigated as building blocks for the biofabrication of bone constructs. Besides capturing elements of the bone physiological structure, these inorganic/organic composites can be designed for specific cohesivity, rheological and mechanical properties, while both inorganic and organic constituents contribute to the composite bioactivity. This review provides an overview of 3D printed composite biomaterial-inks for bone tissue engineering. Furthermore, key aspects in biomaterial-ink design, 3D printing techniques, and the building blocks for composite biomaterial-inks are summarized.
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Affiliation(s)
- Daphne van der Heide
- AO Research Institute Davos, Clavadelerstrasse, 8, Davos Platz, Davos, Graubünden, 7270, SWITZERLAND
| | - Gianluca Cidonio
- Istituto Italiano di Tecnologia Center for Life Nano Science, 3D Microfluidic Biofabrication Laboratory, Roma, Lazio, 00161, ITALY
| | - Martin Stoddart
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos, Davos, Graubünden, 7270, SWITZERLAND
| | - Matteo D'Este
- AO Research Institute Davos, Clavadelerstrasse 8, Davos, Graubünden, 7270, SWITZERLAND
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14
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On the horizon: Hedgehog signaling to heal broken bones. Bone Res 2022; 10:13. [PMID: 35165260 PMCID: PMC8844053 DOI: 10.1038/s41413-021-00184-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/21/2021] [Accepted: 11/25/2021] [Indexed: 12/22/2022] Open
Abstract
Uncovering the molecular pathways that drive skeletal repair has been an ongoing challenge. Initial efforts have relied on in vitro assays to identify the key signaling pathways that drive cartilage and bone differentiation. While these assays can provide some clues, assessing specific pathways in animal models is critical. Furthermore, definitive proof that a pathway is required for skeletal repair is best provided using genetic tests. Stimulating the Hh (Hedgehog) pathway can promote cartilage and bone differentiation in cell culture assays. In addition, the application of HH protein or various pathway agonists in vivo has a positive influence on bone healing. Until recently, however, genetic proof that the Hh pathway is involved in bone repair has been lacking. Here, we consider both in vitro and in vivo studies that examine the role of Hh in repair and discuss some of the challenges inherent in their interpretation. We also identify needed areas of study considering a new appreciation for the role of cartilage during repair, the variety of cell types that may have differing roles in repair, and the recent availability of powerful lineage tracing techniques. We are optimistic that emerging genetic tools will make it possible to precisely define when and in which cells promoting Hh signaling can best promote skeletal repair, and thus, the clinical potential for targeting the Hh pathway can be realized.
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15
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Longoni A, Utomo L, Robinson A, Levato R, Rosenberg AJWP, Gawlitta D. Acceleration of Bone Regeneration Induced by a Soft-Callus Mimetic Material. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2103284. [PMID: 34962103 PMCID: PMC8867155 DOI: 10.1002/advs.202103284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 11/12/2021] [Indexed: 06/14/2023]
Abstract
Clinical implementation of endochondral bone regeneration (EBR) would benefit from the engineering of devitalized cartilaginous constructs of allogeneic origins. Nevertheless, development of effective devitalization strategies that preserves extracellular matrix (ECM) is still challenging. The aim of this study is to investigate EBR induced by devitalized, soft callus-mimetic spheroids. To challenge the translatability of this approach, the constructs are generated using an allogeneic cell source. Neo-bone formation is evaluated in an immunocompetent rat model, subcutaneously and in a critical size femur defect. Living spheroids are used as controls. Also, the effect of spheroid maturation towards hypertrophy is evaluated. The devitalization procedure successfully induces cell death without affecting ECM composition or bioactivity. In vivo, a larger amount of neo-bone formation is observed for the devitalized chondrogenic group both ectopically and orthotopically. In the femur defect, accelerated bone regeneration is observed in the devitalized chondrogenic group, where defect bridging is observed 4 weeks post-implantation. The authors' results show, for the first time, a dramatic increase in the rate of bone formation induced by devitalized soft callus-mimetics. These findings pave the way for the development of a new generation of allogeneic, "off-the-shelf" products for EBR, which are suitable for the treatment of every patient.
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Affiliation(s)
- Alessia Longoni
- Department of Oral and Maxillofacial Surgery & Special Dental CareUniversity Medical Center UtrechtUtrecht UniversityG05.222, PO Box 85500Utrecht3508 GAThe Netherlands
- Regenerative Medicine Center UtrechtUtrecht3584 CTThe Netherlands
| | - Lizette Utomo
- Department of Oral and Maxillofacial Surgery & Special Dental CareUniversity Medical Center UtrechtUtrecht UniversityG05.222, PO Box 85500Utrecht3508 GAThe Netherlands
- Regenerative Medicine Center UtrechtUtrecht3584 CTThe Netherlands
- Department of Clinical SciencesFaculty of Veterinary MedicineUtrecht UniversityYalelaan 108Utrecht3584CMThe Netherlands
| | - Abbie Robinson
- Department of Oral and Maxillofacial Surgery & Special Dental CareUniversity Medical Center UtrechtUtrecht UniversityG05.222, PO Box 85500Utrecht3508 GAThe Netherlands
- Regenerative Medicine Center UtrechtUtrecht3584 CTThe Netherlands
| | - Riccardo Levato
- Regenerative Medicine Center UtrechtUtrecht3584 CTThe Netherlands
- Department of Clinical SciencesFaculty of Veterinary MedicineUtrecht UniversityYalelaan 108Utrecht3584CMThe Netherlands
- Department of OrthopaedicsUniversity Medical Center UtrechtUtrecht UniversityUtrecht3508 GAThe Netherlands
| | - Antoine J. W. P. Rosenberg
- Department of Oral and Maxillofacial Surgery & Special Dental CareUniversity Medical Center UtrechtUtrecht UniversityG05.222, PO Box 85500Utrecht3508 GAThe Netherlands
| | - Debby Gawlitta
- Department of Oral and Maxillofacial Surgery & Special Dental CareUniversity Medical Center UtrechtUtrecht UniversityG05.222, PO Box 85500Utrecht3508 GAThe Netherlands
- Regenerative Medicine Center UtrechtUtrecht3584 CTThe Netherlands
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16
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Mineralization in a Critical Size Bone-Gap in Sheep Tibia Improved by a Chitosan-Calcium Phosphate-Based Composite as Compared to Predicate Device. MATERIALS 2022; 15:ma15030838. [PMID: 35160784 PMCID: PMC8836995 DOI: 10.3390/ma15030838] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 02/04/2023]
Abstract
Deacetylated chitin derivatives have been widely studied for tissue engineering purposes. This study aimed to compare the efficacy of an injectable product containing a 50% deacetylated chitin derivative (BoneReg-Inject™) and an existing product (chronOS Inject®) serving as a predicate device. A sheep model with a critical size drill hole in the tibial plateau was used. Holes of 8 mm diameter and 30 mm length were drilled bilaterally into the proximal area of the tibia and BoneReg-Inject™ or chronOS Inject® were injected into the right leg holes. Comparison of resorption and bone formation in vivo was made by X-ray micro-CT and histological evaluation after a live phase of 12 weeks. Long-term effects of BoneReg-Inject™ were studied using a 13-month live period. Significant differences were observed in (1) amount of new bone within implant (p < 0.001), higher in BoneReg-InjectTM, (2) signs of cartilage tissue (p = 0.003), more pronounced in BoneReg-InjectTM, and (3) signs of fibrous tissue (p < 0.001), less pronounced in BoneReg-InjectTM. Mineral content at 13 months postoperative was significantly higher than at 12 weeks (p < 0.001 and p < 0.05, for implant core and rim, respectively). The data demonstrate the potential of deacetylated chitin derivatives to stimulate bone formation.
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17
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Erickson CB, Hill R, Pascablo D, Kazakia G, Hansen K, Bahney C. A timeseries analysis of the fracture callus extracellular matrix proteome during bone fracture healing. JOURNAL OF LIFE SCIENCES (WESTLAKE VILLAGE, CALIF.) 2021; 3:1-30. [PMID: 35765657 PMCID: PMC9236279 DOI: 10.36069/jols/20220601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
While most bones fully self-heal, certain diseases require bone allograft to assist with fracture healing. Bone allografts offer promise as treatments for such fractures due to their osteogenic properties. However, current bone allografts made of decellularized bone extracellular matrix (ECM) have high failure rates, and thus grafts which improve fracture healing outcomes are needed. Understanding specific changes to the ECM proteome during normal fracture healing would enable the identification of key proteins that could be used enhance osteogenicity of bone allograft. Here, we performed a timeseries analysis of the fracture callus in mice to investigate proteomic and mineralization changes to the ECM at key stages of fracture healing. We found that changes to the ECM proteome largely coincide with the distinct phases of fracture healing. Basement membrane proteins (AGRN, COL4, LAMA), cartilage proteins (COL2A1, ACAN), and collagen crosslinking enzymes (LOXL, PLOD, ITIH) were initially upregulated, followed by bone specific proteoglycans and collagens (IBSP, COL1A1). Various tissue proteases (MMP2, 9, 13, 14; CTSK, CTSG, ELANE) were expressed at different levels throughout fracture healing. These changes coordinated with mineralization of the fracture callus, which increased steeply during the initial stages of healing. Interestingly the later timepoint was characterized by a response to wound healing and high expression of clotting factors (F2, 7, 9, 10). We identified ELANE and ITIH2 as tissue remodeling enzymes having no prior known involvement with fracture healing. This data can be further mined to identify regenerative proteins for enhanced bone graft design.
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Affiliation(s)
- Christopher B. Erickson
- Department of Biochemistry and Molecular Genetics,University of Colorado, Anschutz Medical Campus, Aurora, CO
| | - Ryan Hill
- Department of Biochemistry and Molecular Genetics,University of Colorado, Anschutz Medical Campus, Aurora, CO
| | - Donna Pascablo
- Orthopaedic Trauma Institute, University of California, San Francisco (UCSF), San Francisco, CA
| | - Galateia Kazakia
- Department of Radiology and Biomedical Imaging, University of California, San Francisco (UCSF), San Francisco, CA
| | - Kirk Hansen
- Department of Biochemistry and Molecular Genetics,University of Colorado, Anschutz Medical Campus, Aurora, CO
| | - Chelsea Bahney
- Stedman Philippon Research Institute (SPRI), Center for Regenerative and Personalized Medicine. Vail, CO
- Orthopaedic Trauma Institute, University of California, San Francisco (UCSF), San Francisco, CA
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18
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Dalisson B, Charbonnier B, Aoude A, Gilardino M, Harvey E, Makhoul N, Barralet J. Skeletal regeneration for segmental bone loss: Vascularised grafts, analogues and surrogates. Acta Biomater 2021; 136:37-55. [PMID: 34626818 DOI: 10.1016/j.actbio.2021.09.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 09/25/2021] [Accepted: 09/28/2021] [Indexed: 02/08/2023]
Abstract
Massive segmental bone defects (SBD) are mostly treated by removing the fibula and transplanting it complete with blood supply. While revolutionary 50 years ago, this remains the standard treatment. This review considers different strategies to repair SBD and emerging potential replacements for this highly invasive procedure. Prior to the technical breakthrough of microsurgery, researchers in the 1960s and 1970s had begun to make considerable progress in developing non autologous routes to repairing SBD. While the breaktthrough of vascularised bone transplantation solved the immediate problem of a lack of reliable repair strategies, much of their prior work is still relevant today. We challenge the assumption that mimicry is necessary or likely to be successful and instead point to the utility of quite crude (from a materials technology perspective), approaches. Together there are quite compelling indications that the body can regenerate entire bone segments with few or no exogenous factors. This is important, as there is a limit to how expensive a bone repair can be and still be widely available to all patients since cost restraints within healthcare systems are not likely to diminish in the near future. STATEMENT OF SIGNIFICANCE: This review is significant because it is a multidisciplinary view of several surgeons and scientists as to what is driving improvement in segmental bone defect repair, why many approaches to date have not succeeded and why some quite basic approaches can be as effective as they are. While there are many reviews of the literature of grafting and bone repair the relative lack of substantial improvement and slow rate of progress in clinical translation is often overlooked and we seek to challenge the reader to consider the issue more broadly.
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19
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Nogueira LFB, Maniglia BC, Buchet R, Millán JL, Ciancaglini P, Bottini M, Ramos AP. Three-dimensional cell-laden collagen scaffolds: From biochemistry to bone bioengineering. J Biomed Mater Res B Appl Biomater 2021; 110:967-983. [PMID: 34793621 DOI: 10.1002/jbm.b.34967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 09/05/2021] [Accepted: 10/30/2021] [Indexed: 12/22/2022]
Abstract
The bones can be viewed as both an organ and a material. As an organ, the bones give structure to the body, facilitate skeletal movement, and provide protection to internal organs. As a material, the bones consist of a hybrid organic/inorganic three-dimensional (3D) matrix, composed mainly of collagen, noncollagenous proteins, and a calcium phosphate mineral phase, which is formed and regulated by the orchestrated action of a complex array of cells including chondrocytes, osteoblasts, osteocytes, and osteoclasts. The interactions between cells, proteins, and minerals are essential for the bone functions under physiological loading conditions, trauma, and fractures. The organization of the bone's organic and inorganic phases stands out for its mechanical and biological properties and has inspired materials research. The objective of this review is to fill the gaps between the physical and biological characteristics that must be achieved to fabricate scaffolds for bone tissue engineering with enhanced performance. We describe the organization of bone tissue highlighting the characteristics that have inspired the development of 3D cell-laden collagenous scaffolds aimed at replicating the mechanical and biological properties of bone after implantation. The role of noncollagenous macromolecules in the organization of the collagenous matrix and mineralization ability of entrapped cells has also been reviewed. Understanding the modulation of cell activity by the extracellular matrix will ultimately help to improve the biological performance of 3D cell-laden collagenous scaffolds used for bone regeneration and repair as well as for in vitro studies aimed at unravelling physiological and pathological processes occurring in the bone.
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Affiliation(s)
- Lucas Fabricio Bahia Nogueira
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto da Universidade de São Paulo (FFCLRP-USP), São Paulo, Brazil.,Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Bianca C Maniglia
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto da Universidade de São Paulo (FFCLRP-USP), São Paulo, Brazil
| | - Rene Buchet
- Institute for Molecular and Supramolecular Chemistry and Biochemistry, Université Claude Bernard Lyon 1, Villeurbanne, France
| | - José Luis Millán
- Sanford Children's Health Research Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Pietro Ciancaglini
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto da Universidade de São Paulo (FFCLRP-USP), São Paulo, Brazil
| | - Massimo Bottini
- Department of Experimental Medicine, University of Rome Tor Vergata, Rome, Italy.,Sanford Children's Health Research Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California, USA
| | - Ana Paula Ramos
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto da Universidade de São Paulo (FFCLRP-USP), São Paulo, Brazil
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20
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Effect of Urolithin A on Bone Repair in Mice with Bone Defects. Tissue Eng Regen Med 2021; 19:151-159. [PMID: 34694576 DOI: 10.1007/s13770-021-00382-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/28/2021] [Accepted: 08/03/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Bone defect difficult to manage clinically and it is a big challenge to repair it. Secondary metabolites source from herb has shown potential for the treatment of bone defect. METHODS Mesenchymal stem cells (MSCs) were isolated from mice and incubated with urolithin A (UA) (10, 25, and 50 µg/mL). 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay was performed to estimate apoptosis and mineralisation was evaluated by alkaline phosphatase assay and alizarin red S staining. A middle femoral defect was induced in mice and bone tissue was prepared for endochondral ossification by treating with UA. The effect of UA was estimated by determining markers of osteoblast proliferation in serum and micro-computed tomography to analyse bone defects. RESULTS UA enhanced mineralisation of MSCs and osteogenic gene markers in MSCs in vitro. Also, the bone defect score and bone mineral density were improved by UA. Moreover, UA ameliorated the altered Wnt3a protein and histopathological changes in bone defect mice. CONCLUSION Presented report conclude that UA enhances osteoblast proliferation in bone-defect mice by activating the Wnt pathway.
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21
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Iimori Y, Morioka M, Koyamatsu S, Tsumaki N. Implantation of Human-Induced Pluripotent Stem Cell-Derived Cartilage in Bone Defects of Mice. Tissue Eng Part A 2021; 27:1355-1367. [PMID: 33567995 DOI: 10.1089/ten.tea.2020.0346] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Although bone has an innate capacity for repair, clinical situations such as comminuted fracture, open fracture, or the surgical resection of bone tumors produce critical-sized bone defects that exceed the capacity and require external intervention. Initiating endochondral ossification (EO) by the implantation of a cartilaginous template into the bone defect is a relatively new approach to cure critical-sized bone defects. The combination of chondrogenically primed mesenchymal stromal/stem cells and artificial scaffolds has been the most extensively studied approach for inducing endochondral bone formation in bone defects. In this study, we prepared cartilage (human-induced pluripotent stem [hiPS]-Cart) from hiPS cells (hiPSCs) in a scaffoldless manner and implanted hiPS-Cart into 3.5 mm large defects created in the femurs of immunodeficient mice to examine the repair capacity. For the control, nothing was implanted into the defects. The implantation of hiPS-Cart significantly induced more new bone in the defect compared with the control. Culture periods for the chondrogenic differentiation of hiPSCs significantly affected the speed of bone induction, with less time resulting in faster bone formation. Histological analysis revealed that hiPS-Cart induced new bone formation in a manner resembling EO of the secondary ossification center, with the cartilage canal, which extended from the periphery to the center of hiPS-Cart, initially forming in unmineralized cartilage, followed by chondrocyte hypertrophy at the center. In the newly formed bone, the majority of osteocytes, osteoblasts, and adipocytes expressed human nuclear antigen (HNA), suggesting that these types of cells mainly derived from the perichondrium of hiPS-Cart. Osteoclasts and blood vessel cells did not express HNA and thus were mouse. Finally, integration between the newly formed bone and mouse femur was attained substantially. Although hiPS-Cart induced new bone that filled bone defects, the newly formed bone, which is a hybrid of human and mouse, had not remodeled to mature bone within the observation period of this study (28 weeks).
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Affiliation(s)
- Yuki Iimori
- Cell Induction and Regulation Field, Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan.,Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Miho Morioka
- Cell Induction and Regulation Field, Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Saeko Koyamatsu
- Cell Induction and Regulation Field, Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Noriyuki Tsumaki
- Cell Induction and Regulation Field, Department of Clinical Application, Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
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22
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Wong SA, Hu DP, Slocum J, Lam C, Nguyen M, Miclau T, Marcucio RS, Bahney CS. Chondrocyte-to-osteoblast transformation in mandibular fracture repair. J Orthop Res 2021; 39:1622-1632. [PMID: 33140859 PMCID: PMC8451921 DOI: 10.1002/jor.24904] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 10/01/2020] [Accepted: 10/31/2020] [Indexed: 02/04/2023]
Abstract
The majority of fracture research has been conducted using long bone fracture models, with significantly less research into the mechanisms driving craniofacial repair. However, craniofacial bones differ from long bones in both their developmental mechanism and embryonic origin. Thus, it is possible that their healing mechanisms could differ. In this study we utilize stabilized and unstabilized mandible fracture models to investigate the pathways regulating repair. Whereas fully stable trephine defects in the ramus form bone directly, mechanical motion within a transverse fracture across the same anatomical location promoted robust cartilage formation before boney remodeling. Literature investigating long bone fractures show chondrocytes are a direct precursor of osteoblasts during endochondral repair. Lineage tracing with Aggrecan-CreERT2 ::Ai9 tdTomato mice demonstrated that mandibular callus chondrocytes also directly contribute to the formation of new bone. Furthermore, immunohistochemistry revealed that chondrocytes located at the chondro-osseous junction expressed Sox2, suggesting that plasticity of these chondrocytes may facilitate this chondrocyte-to-osteoblast transformation. Based on the direct role chondrocytes play in bone repair, we tested the efficacy of cartilage grafts in healing critical-sized mandibular defects. Whereas empty defects remained unbridged and filled with fibrous tissue, cartilage engraftment produced bony-bridging and robust marrow cavity formation, indicating healthy vascularization of the newly formed bone. Engrafted cartilage directly contributed to new bone formation since a significant portion of the newly formed bone was graft/donor-derived. Taken together these data demonstrate the important role of chondrocyte-to-osteoblast transformation during mandibular endochondral repair and the therapeutic promise of using cartilage as a tissue graft to heal craniofacial defects.
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Affiliation(s)
- Sarah A. Wong
- Department of Orthopaedic Surgery, Orthopaedic Trauma InstituteUniversity of California2550 23rd Street Building 9, 3rd FloorSan FranciscoCalifornia94110USA,Oral and Craniofacial Sciences Program, School of DentistryUniversity of CaliforniaSan FranciscoCaliforniaUSA
| | - Diane P. Hu
- Department of Orthopaedic Surgery, Orthopaedic Trauma InstituteUniversity of California2550 23rd Street Building 9, 3rd FloorSan FranciscoCalifornia94110USA
| | - Joshua Slocum
- Department of Orthopaedic Surgery, Orthopaedic Trauma InstituteUniversity of California2550 23rd Street Building 9, 3rd FloorSan FranciscoCalifornia94110USA
| | - Charles Lam
- Department of Orthopaedic Surgery, Orthopaedic Trauma InstituteUniversity of California2550 23rd Street Building 9, 3rd FloorSan FranciscoCalifornia94110USA
| | - Michael Nguyen
- Department of Orthopaedic Surgery, Orthopaedic Trauma InstituteUniversity of California2550 23rd Street Building 9, 3rd FloorSan FranciscoCalifornia94110USA,Oral and Craniofacial Sciences Program, School of DentistryUniversity of CaliforniaSan FranciscoCaliforniaUSA
| | - Theodore Miclau
- Department of Orthopaedic Surgery, Orthopaedic Trauma InstituteUniversity of California2550 23rd Street Building 9, 3rd FloorSan FranciscoCalifornia94110USA
| | - Ralph S. Marcucio
- Department of Orthopaedic Surgery, Orthopaedic Trauma InstituteUniversity of California2550 23rd Street Building 9, 3rd FloorSan FranciscoCalifornia94110USA,Oral and Craniofacial Sciences Program, School of DentistryUniversity of CaliforniaSan FranciscoCaliforniaUSA
| | - Chelsea S. Bahney
- Department of Orthopaedic Surgery, Orthopaedic Trauma InstituteUniversity of California2550 23rd Street Building 9, 3rd FloorSan FranciscoCalifornia94110USA,Steadman Philippon Research InstituteCenter for Regenerative Sports Medicine181 W Meadows DriveVailColorado81657USA
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23
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Schott NG, Friend NE, Stegemann JP. Coupling Osteogenesis and Vasculogenesis in Engineered Orthopedic Tissues. TISSUE ENGINEERING. PART B, REVIEWS 2021; 27:199-214. [PMID: 32854589 PMCID: PMC8349721 DOI: 10.1089/ten.teb.2020.0132] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 08/25/2020] [Indexed: 12/20/2022]
Abstract
Inadequate vascularization of engineered tissue constructs is a main challenge in developing a clinically impactful therapy for large, complex, and recalcitrant bone defects. It is well established that bone and blood vessels form concomitantly during development, as well as during repair after injury. Endothelial cells (ECs) and mesenchymal stromal cells (MSCs) are known to be key players in orthopedic tissue regeneration and vascularization, and these cell types have been used widely in tissue engineering strategies to create vascularized bone. Coculture studies have demonstrated that there is crosstalk between ECs and MSCs that can lead to synergistic effects on tissue regeneration. At the same time, the complexity in fabricating, culturing, and characterizing engineered tissue constructs containing multiple cell types presents a challenge in creating multifunctional tissues. In particular, the timing, spatial distribution, and cell phenotypes that are most conducive to promoting concurrent bone and vessel formation are not well understood. This review describes the processes of bone and vascular development, and how these have been harnessed in tissue engineering strategies to create vascularized bone. There is an emphasis on interactions between ECs and MSCs, and the culture systems that can be used to understand and control these interactions within a single engineered construct. Developmental engineering strategies to mimic endochondral ossification are discussed as a means of generating vascularized orthopedic tissues. The field of tissue engineering has made impressive progress in creating tissue replacements. However, the development of larger, more complex, and multifunctional engineered orthopedic tissues will require a better understanding of how osteogenesis and vasculogenesis are coupled in tissue regeneration. Impact statement Vascularization of large engineered tissue volumes remains a challenge in developing new and more biologically functional bone grafts. A better understanding of how blood vessels develop during bone formation and regeneration is needed. This knowledge can then be applied to develop new strategies for promoting both osteogenesis and vasculogenesis during the creation of engineered orthopedic tissues. This article summarizes the processes of bone and blood vessel development, with a focus on how endothelial cells and mesenchymal stromal cells interact to form vascularized bone both during development and growth, as well as tissue healing. It is meant as a resource for tissue engineers who are interested in creating vascularized tissue, and in particular to those developing cell-based therapies for large, complex, and recalcitrant bone defects.
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Affiliation(s)
- Nicholas G. Schott
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA
| | - Nicole E. Friend
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA
| | - Jan P. Stegemann
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA
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24
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Jeyakumar V, Amraish N, Niculescu-Morsza E, Bauer C, Pahr D, Nehrer S. Decellularized Cartilage Extracellular Matrix Incorporated Silk Fibroin Hybrid Scaffolds for Endochondral Ossification Mediated Bone Regeneration. Int J Mol Sci 2021; 22:ijms22084055. [PMID: 33919985 PMCID: PMC8071030 DOI: 10.3390/ijms22084055] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/10/2021] [Accepted: 04/10/2021] [Indexed: 11/29/2022] Open
Abstract
Tissue engineering strategies promote bone regeneration for large bone defects by stimulating the osteogenesis route via intramembranous ossification in engineered grafts, which upon implantation are frequently constrained by insufficient integration and functional anastomosis of vasculature from the host tissue. In this study, we developed a hybrid biomaterial incorporating decellularized cartilage extracellular matrix (CD-ECM) as a template and silk fibroin (SF) as a carrier to assess the bone regeneration capacity of bone marrow-derived mesenchymal stem cells (hBMSC’s) via the endochondral ossification (ECO) route. hBMSC’s were primed two weeks for chondrogenesis, followed by six weeks for hypertrophy onto hybrid CD-ECM/SF or SF alone scaffolds and evaluated for the mineralized matrix formation in vitro. Calcium deposition biochemically determined increased significantly from 4-8 weeks in both SF and CD-ECM/SF constructs, and retention of sGAG’s were observed only in CD-ECM/SF constructs. SEM/EDX revealed calcium and phosphate crystal localization by hBMSC’s under all conditions. Compressive modulus reached a maximum of 40 KPa after eight weeks of hypertrophic induction. μCT scanning at eight weeks indicated a cloud of denser minerals in groups after hypertrophic induction in CD-ECM/SF constructs than SF constructs. Gene expression by RT-qPCR revealed that hBMSC’s expressed hypertrophic markers VEGF, COL10, RUNX2, but the absence of early hypertrophic marker ChM1 and later hypertrophic marker TSBS1 and the presence of osteogenic markers ALPL, IBSP, OSX under all conditions. Our data indicate a new method to prime hBMSC’S into the late hypertrophic stage in vitro in mechanically stable constructs for ECO-mediated bone tissue regeneration.
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Affiliation(s)
- Vivek Jeyakumar
- Center for Regenerative Medicine, Danube University Krems, 3500 Krems, Austria; (E.N.-M.); (C.B.); (S.N.)
- Correspondence:
| | - Nedaa Amraish
- Department of Anatomy and Biomechanics, Karl Landsteiner University for Health Sciences, 3500 Krems, Austria; (N.A.); (D.P.)
- Institute for Lightweight Design and Structural Biomechanics, Vienna University of Technology, 1060 Vienna, Austria
| | - Eugenia Niculescu-Morsza
- Center for Regenerative Medicine, Danube University Krems, 3500 Krems, Austria; (E.N.-M.); (C.B.); (S.N.)
| | - Christoph Bauer
- Center for Regenerative Medicine, Danube University Krems, 3500 Krems, Austria; (E.N.-M.); (C.B.); (S.N.)
| | - Dieter Pahr
- Department of Anatomy and Biomechanics, Karl Landsteiner University for Health Sciences, 3500 Krems, Austria; (N.A.); (D.P.)
- Institute for Lightweight Design and Structural Biomechanics, Vienna University of Technology, 1060 Vienna, Austria
| | - Stefan Nehrer
- Center for Regenerative Medicine, Danube University Krems, 3500 Krems, Austria; (E.N.-M.); (C.B.); (S.N.)
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25
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Decellularized bone extracellular matrix in skeletal tissue engineering. Biochem Soc Trans 2021; 48:755-764. [PMID: 32369551 DOI: 10.1042/bst20190079] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 04/09/2020] [Accepted: 04/14/2020] [Indexed: 02/07/2023]
Abstract
Bone possesses an intrinsic regenerative capacity, which can be compromised by aging, disease, trauma, and iatrogenesis (e.g. tumor resection, pharmacological). At present, autografts and allografts are the principal biological treatments available to replace large bone segments, but both entail several limitations that reduce wider use and consistent success. The use of decellularized extracellular matrices (ECM), often derived from xenogeneic sources, has been shown to favorably influence the immune response to injury and promote site-appropriate tissue regeneration. Decellularized bone ECM (dbECM), utilized in several forms - whole organ, particles, hydrogels - has shown promise in both in vitro and in vivo animal studies to promote osteogenic differentiation of stem/progenitor cells and enhance bone regeneration. However, dbECM has yet to be investigated in clinical studies, which are needed to determine the relative efficacy of this emerging biomaterial as compared with established treatments. This mini-review highlights the recent exploration of dbECM as a biomaterial for skeletal tissue engineering and considers modifications on its future use to more consistently promote bone regeneration.
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26
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Knecht RS, Bucher CH, Van Linthout S, Tschöpe C, Schmidt-Bleek K, Duda GN. Mechanobiological Principles Influence the Immune Response in Regeneration: Implications for Bone Healing. Front Bioeng Biotechnol 2021; 9:614508. [PMID: 33644014 PMCID: PMC7907627 DOI: 10.3389/fbioe.2021.614508] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 01/22/2021] [Indexed: 12/13/2022] Open
Abstract
A misdirected or imbalanced local immune composition is often one of the reasons for unsuccessful regeneration resulting in scarring or fibrosis. Successful healing requires a balanced initiation and a timely down-regulation of the inflammation for the re-establishment of a biologically and mechanically homeostasis. While biomaterial-based approaches to control local immune responses are emerging as potential new treatment options, the extent to which biophysical material properties themselves play a role in modulating a local immune niche response has so far been considered only occasionally. The communication loop between extracellular matrix, non-hematopoietic cells, and immune cells seems to be specifically sensitive to mechanical cues and appears to play a role in the initiation and promotion of a local inflammatory setting. In this review, we focus on the crosstalk between ECM and its mechanical triggers and how they impact immune cells and non-hematopoietic cells and their crosstalk during tissue regeneration. We realized that especially mechanosensitive receptors such as TRPV4 and PIEZO1 and the mechanosensitive transcription factor YAP/TAZ are essential to regeneration in various organ settings. This indicates novel opportunities for therapeutic approaches to improve tissue regeneration, based on the immune-mechanical principles found in bone but also lung, heart, and skin.
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Affiliation(s)
- Raphael S Knecht
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Christian H Bucher
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute of Health Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Sophie Van Linthout
- Berlin Institute of Health Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, Berlin, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site Berlin, Berlin, Germany
| | - Carsten Tschöpe
- Berlin Institute of Health Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, Berlin, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site Berlin, Berlin, Germany.,Department of Cardiology, Charite'-Universitätsmedizin Berlin, Berlin, Germany
| | - Katharina Schmidt-Bleek
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute of Health Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Georg N Duda
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute of Health Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, Berlin, Germany
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27
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Papantoniou I, Nilsson Hall G, Loverdou N, Lesage R, Herpelinck T, Mendes L, Geris L. Turning Nature's own processes into design strategies for living bone implant biomanufacturing: a decade of Developmental Engineering. Adv Drug Deliv Rev 2021; 169:22-39. [PMID: 33290762 PMCID: PMC7839840 DOI: 10.1016/j.addr.2020.11.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 11/20/2020] [Accepted: 11/29/2020] [Indexed: 12/14/2022]
Abstract
A decade after the term developmental engineering (DE) was coined to indicate the use of developmental processes as blueprints for the design and development of engineered living implants, a myriad of proof-of-concept studies demonstrate the potential of this approach in small animal models. This review provides an overview of DE work, focusing on applications in bone regeneration. Enabling technologies allow to quantify the distance between in vitro processes and their developmental counterpart, as well as to design strategies to reduce that distance. By embedding Nature's robust mechanisms of action in engineered constructs, predictive large animal data and subsequent positive clinical outcomes can be gradually achieved. To this end, the development of next generation biofabrication technologies should provide the necessary scale and precision for robust living bone implant biomanufacturing.
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Affiliation(s)
- Ioannis Papantoniou
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology - Hellas (FORTH), Stadiou street, 26504 Patras, Greece; Skeletal Biology & Engineering Research Center, KU Leuven, Herestraat 49 (813), 3000 Leuven, Belgium; Prometheus, The KU Leuven R&D Division for Skeletal Tissue Engineering, Herestraat 49 (813), 3000 Leuven, Belgium.
| | - Gabriella Nilsson Hall
- Skeletal Biology & Engineering Research Center, KU Leuven, Herestraat 49 (813), 3000 Leuven, Belgium; Prometheus, The KU Leuven R&D Division for Skeletal Tissue Engineering, Herestraat 49 (813), 3000 Leuven, Belgium.
| | - Niki Loverdou
- Prometheus, The KU Leuven R&D Division for Skeletal Tissue Engineering, Herestraat 49 (813), 3000 Leuven, Belgium; GIGA in silico medicine, University of Liège, Avenue de l'Hôpital 11 (B34), 4000 Liège, Belgium; Biomechanics Section, KU Leuven, Celestijnenlaan 300C (2419), 3001 Leuven, Belgium.
| | - Raphaelle Lesage
- Prometheus, The KU Leuven R&D Division for Skeletal Tissue Engineering, Herestraat 49 (813), 3000 Leuven, Belgium; Biomechanics Section, KU Leuven, Celestijnenlaan 300C (2419), 3001 Leuven, Belgium.
| | - Tim Herpelinck
- Skeletal Biology & Engineering Research Center, KU Leuven, Herestraat 49 (813), 3000 Leuven, Belgium; Prometheus, The KU Leuven R&D Division for Skeletal Tissue Engineering, Herestraat 49 (813), 3000 Leuven, Belgium.
| | - Luis Mendes
- Skeletal Biology & Engineering Research Center, KU Leuven, Herestraat 49 (813), 3000 Leuven, Belgium; Prometheus, The KU Leuven R&D Division for Skeletal Tissue Engineering, Herestraat 49 (813), 3000 Leuven, Belgium.
| | - Liesbet Geris
- Skeletal Biology & Engineering Research Center, KU Leuven, Herestraat 49 (813), 3000 Leuven, Belgium; GIGA in silico medicine, University of Liège, Avenue de l'Hôpital 11 (B34), 4000 Liège, Belgium; Prometheus, The KU Leuven R&D Division for Skeletal Tissue Engineering, Herestraat 49 (813), 3000 Leuven, Belgium; Biomechanics Section, KU Leuven, Celestijnenlaan 300C (2419), 3001 Leuven, Belgium.
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28
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Fu R, Liu C, Yan Y, Li Q, Huang RL. Bone defect reconstruction via endochondral ossification: A developmental engineering strategy. J Tissue Eng 2021; 12:20417314211004211. [PMID: 33868628 PMCID: PMC8020769 DOI: 10.1177/20417314211004211] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 03/03/2021] [Indexed: 02/05/2023] Open
Abstract
Traditional bone tissue engineering (BTE) strategies induce direct bone-like matrix formation by mimicking the embryological process of intramembranous ossification. However, the clinical translation of these clinical strategies for bone repair is hampered by limited vascularization and poor bone regeneration after implantation in vivo. An alternative strategy for overcoming these drawbacks is engineering cartilaginous constructs by recapitulating the embryonic processes of endochondral ossification (ECO); these constructs have shown a unique ability to survive under hypoxic conditions as well as induce neovascularization and ossification. Such developmentally engineered constructs can act as transient biomimetic templates to facilitate bone regeneration in critical-sized defects. This review introduces the concept and mechanism of developmental BTE, explores the routes of endochondral bone graft engineering, highlights the current state of the art in large bone defect reconstruction via ECO-based strategies, and offers perspectives on the challenges and future directions of translating current knowledge from the bench to the bedside.
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Affiliation(s)
- Rao Fu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chuanqi Liu
- Department of Plastic and Burn Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Yuxin Yan
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qingfeng Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ru-Lin Huang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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29
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Luo Y, Pan H, Jiang J, Zhao C, Zhang J, Chen P, Lin X, Fan S. Desktop-Stereolithography 3D Printing of a Polyporous Extracellular Matrix Bioink for Bone Defect Regeneration. Front Bioeng Biotechnol 2020; 8:589094. [PMID: 33240866 PMCID: PMC7677189 DOI: 10.3389/fbioe.2020.589094] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 10/19/2020] [Indexed: 12/28/2022] Open
Abstract
Introduction Decellularized tendon extracellular matrix (tECM) perfectly provides the natural environment and holds great potential for bone regeneration in Bone tissue engineering (BTE) area. However, its densifying fiber structure leads to reduced cell permeability. Our study aimed to combine tECM with polyethylene glycol diacrylate (PEGDA) to form a biological scaffold with appropriate porosity and strength using stereolithography (SLA) technology for bone defect repair. Methods The tECM was produced and evaluated. Mesenchymal stem cell (MSC) was used to evaluate the biocompatibility of PEGDA/tECM bioink in vitro. Mineralization ability of the bioink was also evaluated in vitro. After preparing 3D printed polyporous PEGDA/tECM scaffolds (3D-pPES) via SLA, the calvarial defect generation capacity of 3D-pPES was assessed. Results The tECM was obtained and the decellularized effect was confirmed. The tECM increased the swelling ratio and porosity of PEGDA bioink, both cellular proliferation and biomineralization in vitro of the bioink were significantly optimized. The 3D-pPES was fabricated. Compared to the control group, increased cell migration efficiency, up-regulation of osteogenic differentiation RNA level, and better calvarial defect repair in rat of the 3D-pPES group were observed. Conclusion This study demonstrates that the 3D-pPES may be a promising strategy for bone defect treatment.
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Affiliation(s)
- Yunxiang Luo
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Medical College of Zhejiang University, Hangzhou, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Hao Pan
- Department of Orthopaedic, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jiuzhou Jiang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Medical College of Zhejiang University, Hangzhou, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Chenchen Zhao
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Medical College of Zhejiang University, Hangzhou, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Jianfeng Zhang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Medical College of Zhejiang University, Hangzhou, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Pengfei Chen
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Medical College of Zhejiang University, Hangzhou, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Xianfeng Lin
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Medical College of Zhejiang University, Hangzhou, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Shunwu Fan
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Medical College of Zhejiang University, Hangzhou, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
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30
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Chen S, McCarthy A, John JV, Su Y, Xie J. Converting 2D Nanofiber Membranes to 3D Hierarchical Assemblies with Structural and Compositional Gradients Regulates Cell Behavior. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2003754. [PMID: 32944991 PMCID: PMC7606784 DOI: 10.1002/adma.202003754] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 08/12/2020] [Indexed: 05/24/2023]
Abstract
New methods are described for converting 2D electrospun nanofiber membranes to 3D hierarchical assemblies with structural and compositional gradients. Pore-size gradients are generated by tuning the expansion of 2D membranes in different layers with incorporation of various amounts of a surfactant during the gas-foaming process. The gradient in fiber organizations is formed by expanding 2D nanofiber membranes composed of multiple regions collected by varying rotating speeds of mandrel. A compositional gradient on 3D assemblies consisting of radially aligned nanofibers is prepared by dripping, diffusion, and crosslinking. Bone mesenchymal stem cells (BMSCs) on the 3D nanofiber assemblies with smaller pore size show significantly higher expression of hypoxia-related markers and enhanced chondrogenic differentiation compared to BMSCs cultured on the assemblies with larger pore size. The basic fibroblast growth factor gradient can accelerate fibroblast migration from the surrounding area to the center in an in vitro wound healing model. Taken together, 3D nanofiber assemblies with gradients in pore sizes, fiber organizations, and contents of signaling molecules can be used to engineer tissue constructs for tissue repair and build biomimetic disease models for studying disease biology and screening drugs, in particular, for interface tissue engineering and modeling.
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Affiliation(s)
- Shixuan Chen
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Alec McCarthy
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Johnson V John
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Yajuan Su
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Jingwei Xie
- Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Department of Mechanical and Materials Engineering, College of Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
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Patel A, Zaky SH, Schoedel K, Li H, Sant V, Beniash E, Sfeir C, Stolz DB, Sant S. Design and evaluation of collagen-inspired mineral-hydrogel nanocomposites for bone regeneration. Acta Biomater 2020; 112:262-273. [PMID: 32497742 DOI: 10.1016/j.actbio.2020.05.034] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/29/2020] [Accepted: 05/26/2020] [Indexed: 12/21/2022]
Abstract
Bone loss due to trauma and tumors remains a serious clinical concern. Due to limited availability and disease transmission risk with autografts and allografts, calcium phosphate bone fillers and growth factor-based substitute bone grafts are currently used in the clinic. However, substitute grafts lack bone regeneration potential when used without growth factors. When used along with the added growth factors, they lead to unwanted side effects such as uncontrolled bone growth. Collagen-based hydrogel grafts available on the market fail to provide structural guidance to native cells due to high water-solubility and faster degradation. To overcome these limitations, we employed bioinspired material design and fabricated three different hydrogels with structural features similar to native collagen at multiple length-scales. These hydrogels fabricated using polyionic complexation of oppositely charged natural polysaccharides exhibited multi-scale architecture mimicking nanoscale banding pattern, and microscale fibrous structure of native collagen. All three hydrogels promoted biomimetic apatite-like mineral deposition in vitro elucidating crystalline structure on the surface while amorphous calcium phosphate inside the hydrogels resulting in mineral-hydrogel nanocomposites. When evaluated in a non-load bearing critical size mouse calvaria defect model, chitosan - kappa carrageenan mineral-hydrogel nanocomposites enhanced bone regeneration without added growth factors compared to empty defect as well as widely used marketed collagen scaffolds. Histological assessment of the regenerated bone revealed improved healing and tissue remodeling with mineral-hydrogel nanocomposites. Overall, these collagen-inspired mineral-hydrogel nanocomposites showed multi-scale hierarchical structure and can potentially serve as promising bioactive hydrogel to promote bone regeneration. STATEMENT OF SIGNIFICANCE: Hydrogels, especially collagen, are widely used in bone tissue engineering. Collagen fibrils play arguably the most important role during natural bone development. Its multi-scale hierarchical structure to form fibers from fibrils and electrostatic charges enable mineral sequestration, nucleation, and growth. However, bulk collagen hydrogels exhibit limited bone regeneration and are mostly used as carriers for highly potent growth factors such as bone morphogenic protein-2, which increase the risk of uncontrolled bone growth. Thus, there is an unmet clinical need for a collagen-inspired biomaterial that can recreate structural hierarchy, mineral sequestration ability, and stimulate recruitment of host progenitor cells to facilitate bone regeneration. Here, we propose collagen-inspired bioactive mineral-hydrogel nanocomposites as a growth factor-free approach to guide and enhance bone regeneration.
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Affiliation(s)
- Akhil Patel
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA 15261
| | - Samer H Zaky
- Center for Craniofacial Regeneration, School of Dental Medicine, University of Pittsburgh, Pittsburgh, PA 15261
| | - Karen Schoedel
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261
| | - Hongshuai Li
- Musculoskeletal Growth & Regeneration Laboratory, Department of Orthopaedic Surgery, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261
| | - Vinayak Sant
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA 15261
| | - Elia Beniash
- Center for Craniofacial Regeneration, School of Dental Medicine, University of Pittsburgh, Pittsburgh, PA 15261; Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA 15219; McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15260
| | - Charles Sfeir
- Center for Craniofacial Regeneration, School of Dental Medicine, University of Pittsburgh, Pittsburgh, PA 15261; Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA 15219; McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15260
| | - Donna B Stolz
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261; McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15260; Department of Cell Biology, University of Pittsburgh, Pittsburgh, PA 15260
| | - Shilpa Sant
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA 15261; Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA 15219; McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15260; UPMC Hillman Cancer Center, University of Pittsburgh, Pittsburgh, PA 15260.
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32
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Junka R, Yu X. Polymeric nanofibrous scaffolds laden with cell-derived extracellular matrix for bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 113:110981. [PMID: 32487395 PMCID: PMC7292471 DOI: 10.1016/j.msec.2020.110981] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 04/14/2020] [Accepted: 04/16/2020] [Indexed: 12/11/2022]
Abstract
Bone tissue engineering aims to alleviate the shortage of available autograft material and the biological/mechanical incompatibility of allografts through fabrication of bioactive synthetic bone graft substitutes. However, these substitute grafting materials have insufficient biological potency that limits their clinical efficacy in regenerating large defects. Extracellular matrix, a natural tissue scaffold laden with biochemical and structural cues regulating cell adhesion and tissue morphogenesis, may be a versatile supplement that can extend its biological functionality to synthetic grafts. Embedding decellularized extracellular matrix (dECM) into synthetic polymers offers a promising strategy to enhance cellular response to synthetic materials, mitigate physical and mechanical limitations of dECMs, and improve clinical utility of synthetic bone grafts. Enriched with dECM biochemical cues, synthetic polymers can be readily fabricated into complex biocomposite grafts that mimic bone structure and stimulate endogenous cells to regenerate bone. In this study, cell-derived dECMs from osteoblast and endothelial cells were incorporated into polycaprolactone (PCL) solutions for electrospinning dual-layer nanofibrous scaffolds with osteogenic and vascular cues. The study examined the bioactivity of dECM scaffolds in osteoblast cultures for cell number, mineral deposits, and osteogenic markers, as well as regeneration of cortical bone defect in a rat femur. Scaffolds with osteoblast dECM had a significantly robust osteoblast proliferation, Alizarin Red staining/concentration, and osteopontin-positive extracellular deposits. Implanted scaffolds increased bone growth in femoral defects, and constructs with both osteogenic and vascular cues significantly improved cortical width. These findings demonstrate the potential to fabricate tailored biomimetic grafts with dECM cues and fibrous architecture for bone applications.
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Affiliation(s)
- Radoslaw Junka
- Department Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, United States of America
| | - Xiaojun Yu
- Department Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, United States of America.
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Montagna G, Cristofaro F, Fassina L, Bruni G, Cucca L, Kochen A, Divieti Pajevic P, Bragdon B, Visai L, Gerstenfeld L. An in vivo Comparison Study Between Strontium Nanoparticles and rhBMP2. Front Bioeng Biotechnol 2020; 8:499. [PMID: 32612980 PMCID: PMC7308719 DOI: 10.3389/fbioe.2020.00499] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 04/29/2020] [Indexed: 01/24/2023] Open
Abstract
The osteoinductive property of strontium was repeatedly proven in the last decades. Compelling in vitro data demonstrated that strontium hydroxyapatite nanoparticles exert a dual action, by promoting osteoblasts-driven matrix secretion and inhibiting osteoclasts-driven matrix resorption. Recombinant human bone morphogenetic protein 2 (rhBMP2) is a powerful osteoinductive biologic, used for the treatment of vertebral fractures and critically-sized bone defects. Although effective, the use of rhBMP2 has limitations due its recombinant morphogen nature. In this study, we examined the comparison between two osteoinductive agents: rhBMP2 and the innovative strontium-substituted hydroxyapatite nanoparticles. To test their effectiveness, we independently loaded Gelfoam sponges with the two osteoinductive agents and used the sponges as agent-carriers. Gelfoam are FDA-approved biodegradable medical devices used as delivery system for musculoskeletal defects. Their porous structure and spongy morphology make them attractive in orthopedic field. The abiotic characterization of the loaded sponges, involving ion release pattern and structure investigation, was followed by in vivo implantation onto the periosteum of healthy mice and comparison of the effects induced by each implant was performed. Abiotic analysis demonstrated that strontium was continuously released from the sponges over 28 days with a pattern similar to rhBMP2. Histological observations and gene expression analysis showed stronger endochondral ossification elicited by strontium compared to rhBMP2. Osteoclast activity was more inhibited by strontium than by rhBMP2. These results demonstrated the use of sponges loaded with strontium nanoparticles as potential bone grafts might provide better outcomes for complex fractures. Strontium nanoparticles are a novel and effective non-biologic treatment for bone injuries and can be used as novel powerful therapeutics for bone regeneration.
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Affiliation(s)
- Giulia Montagna
- Department of Molecular Medicine (DMM), Center for Health Technologies (CHT), UdR INSTM, University of Pavia, Pavia, Italy.,Department of Electrical, Computer and Biomedical Engineering, University of Pavia, Pavia, Italy
| | - Francesco Cristofaro
- Department of Molecular Medicine (DMM), Center for Health Technologies (CHT), UdR INSTM, University of Pavia, Pavia, Italy
| | - Lorenzo Fassina
- Department of Electrical, Computer and Biomedical Engineering, University of Pavia, Pavia, Italy
| | - Giovanna Bruni
- C.S.G.I. Department of Chemistry, Physical-Chemistry Section, University of Pavia, Pavia, Italy
| | - Lucia Cucca
- Department of Chemistry, University of Pavia, Pavia, Italy
| | - Alejandro Kochen
- Department of Translational Dental Medicine, Goldman School of Dental Medicine, Boston University, Boston, MA, United States
| | - Paola Divieti Pajevic
- Department of Translational Dental Medicine, Goldman School of Dental Medicine, Boston University, Boston, MA, United States
| | - Beth Bragdon
- Department of Orthopaedic Surgery, Boston University School of Medicine, Boston, MA, United States
| | - Livia Visai
- Department of Molecular Medicine (DMM), Center for Health Technologies (CHT), UdR INSTM, University of Pavia, Pavia, Italy.,Department of Occupational Medicine, Toxicology and Environmental Risks, Istituti Clinici Scientifici Maugeri, IRCCS, Pavia, Italy
| | - Louis Gerstenfeld
- Department of Orthopaedic Surgery, Boston University School of Medicine, Boston, MA, United States
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Abstract
The modification of implant devices with biocompatible coatings has become necessary as a consequence of premature loosening of prosthesis. This is caused mainly by chronic inflammation or allergies that are triggered by implant wear, production of abrasion particles, and/or release of metallic ions from the implantable device surface. Specific to the implant tissue destination, it could require coatings with specific features in order to provide optimal osseointegration. Pulsed laser deposition (PLD) became a well-known physical vapor deposition technology that has been successfully applied to a large variety of biocompatible inorganic coatings for biomedical prosthetic applications. Matrix assisted pulsed laser evaporation (MAPLE) is a PLD-derived technology used for depositions of thin organic material coatings. In an attempt to surpass solvent related difficulties, when different solvents are used for blending various organic materials, combinatorial MAPLE was proposed to grow thin hybrid coatings, assembled in a gradient of composition. We review herein the evolution of the laser technological process and capabilities of growing thin bio-coatings with emphasis on blended or multilayered biomimetic combinations. These can be used either as implant surfaces with enhanced bioactivity for accelerating orthopedic integration and tissue regeneration or combinatorial bio-platforms for cancer research.
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Zhao H, Tang J, Zhou D, Weng Y, Qin W, Liu C, Lv S, Wang W, Zhao X. Electrospun Icariin-Loaded Core-Shell Collagen, Polycaprolactone, Hydroxyapatite Composite Scaffolds for the Repair of Rabbit Tibia Bone Defects. Int J Nanomedicine 2020; 15:3039-3056. [PMID: 32431500 PMCID: PMC7200251 DOI: 10.2147/ijn.s238800] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 04/08/2020] [Indexed: 12/21/2022] Open
Abstract
Background Electrospinning is a widely used technology that can produce scaffolds with high porosity and surface area for bone regeneration. However, the small pore sizes in electrospun scaffolds constrain cell growth and tissue-ingrowth. In this study, novel drug-loading core-shell scaffolds were fabricated via electrospinning and freeze drying to facilitate the repair of tibia bone defects in rabbit models. Materials and Methods The collagen core scaffolds were freeze-dried containing icariin (ICA)-loaded chitosan microspheres. The shell scaffolds were electrospun using collagen, polycaprolactone and hydroxyapatite materials to form CPH composite scaffolds with the ones containing ICA microspheres named CPHI. The core-shell scaffolds were then cross-linked by genipin. The morphology, microstructure, physical and mechanical properties of the scaffolds were assessed. Rat marrow mesenchymal stem cells from the wistar rat were cultured with the scaffolds. The cell adhesion and proliferation were analysed. Adult rabbit models with tibial plateau defects were used to evaluate the performance of these scaffolds in repairing the bone defects over 4 to 12 weeks. Results The results reveal that the novel drug-loading core-shell scaffolds were successfully fabricated, which showed good physical and chemical properties and appropriate mechanical properties. Furthermore, excellent cells attachment was observed on the CPHI scaffolds. The results from radiography, micro-computed tomography, histological and immunohistochemical analysis demonstrated that abundant new bones were formed on the CPHI scaffolds. Conclusion These new core-shell composite scaffolds have great potential for bone tissue engineering applications and may lead to effective bone regeneration and repair.
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Affiliation(s)
- Hongbin Zhao
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, People's Republic of China
| | - Junjie Tang
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, People's Republic of China
| | - Dong Zhou
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, People's Republic of China
| | - Yiping Weng
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, People's Republic of China
| | - Wen Qin
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, People's Republic of China
| | - Chun Liu
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, People's Republic of China
| | - Songwei Lv
- School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou 213164, People's Republic of China
| | - Wei Wang
- Medical School, Hexi University, Zhangye 730041, People's Republic of China
| | - Xiubo Zhao
- School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou 213164, People's Republic of China.,Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK
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Shimo T, Takebe H, Okui T, Kunisada Y, Ibaragi S, Obata K, Kurio N, Shamsoon K, Fujii S, Hosoya A, Irie K, Sasaki A, Iwamoto M. Expression and Role of IL-1β Signaling in Chondrocytes Associated with Retinoid Signaling during Fracture Healing. Int J Mol Sci 2020; 21:ijms21072365. [PMID: 32235405 PMCID: PMC7177407 DOI: 10.3390/ijms21072365] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/15/2020] [Accepted: 03/26/2020] [Indexed: 01/08/2023] Open
Abstract
The process of fracture healing consists of an inflammatory reaction and cartilage and bone tissue reconstruction. The inflammatory cytokine interleukin-1β (IL-1β) signal is an important major factor in fracture healing, whereas its relevance to retinoid receptor (an RAR inverse agonist, which promotes endochondral bone formation) remains unclear. Herein, we investigated the expressions of IL-1β and retinoic acid receptor gamma (RARγ) in a rat fracture model and the effects of IL-1β in the presence of one of several RAR inverse agonists on chondrocytes. An immunohistochemical analysis revealed that IL-1β and RARγ were expressed in chondrocytes at the fracture site in the rat ribs on day 7 post-fracture. In chondrogenic ATDC5 cells, IL-1β decreases the levels of aggrecan and type II collagen but significantly increased the metalloproteinase-13 (Mmp13) mRNA by real-time reverse transcription-polymerase chain reaction (RT-PCR) analysis. An RAR inverse agonist (AGN194310) inhibited IL-1β-stimulated Mmp13 and Ccn2 mRNA in a dose-dependent manner. Phosphorylated extracellular signal regulated-kinases (pERK1/2) and p-p38 mitogen-activated protein kinase (MAPK) were increased time-dependently by IL-1β treatment, and the IL-1β-induced p-p38 MAPK was inhibited by AGN194310. Experimental p38 inhibition led to a drop in the IL-1β-stimulated expressions of Mmp13 and Ccn2 mRNA. MMP13, CCN2, and p-p38 MAPK were expressed in hypertrophic chondrocytes near the invaded vascular endothelial cells. As a whole, these results point to role of the IL-1β via p38 MAPK as important signaling in the regulation of the endochondral bone formation in fracture healing, and to the actions of RAR inverse agonists as potentially relevant modulators of this process.
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Affiliation(s)
- Tsuyoshi Shimo
- Division of Reconstructive Surgery for Oral and Maxillofacial Region, Department of Human Biology and Pathophysiology, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido 061-0293, Japan;
- Correspondence: ; Tel./Fax: +81-133-23-1429
| | - Hiroaki Takebe
- Division of Histology, Department of Oral Growth and Development, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido 061-0293, Japan; (H.T.); (A.H.); (K.I.)
| | - Tatsuo Okui
- Departments of Oral and Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama 700-8525, Japan; (T.O.); (Y.K.); (S.I.); (K.O.); (A.S.)
| | - Yuki Kunisada
- Departments of Oral and Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama 700-8525, Japan; (T.O.); (Y.K.); (S.I.); (K.O.); (A.S.)
| | - Soichiro Ibaragi
- Departments of Oral and Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama 700-8525, Japan; (T.O.); (Y.K.); (S.I.); (K.O.); (A.S.)
| | - Kyoichi Obata
- Departments of Oral and Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama 700-8525, Japan; (T.O.); (Y.K.); (S.I.); (K.O.); (A.S.)
| | - Naito Kurio
- Department of Oral Surgery, Tokushima University Graduate School, Tokushima 770-8504, Japan;
| | - Karnoon Shamsoon
- Division of Clinical Cariology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, University of Hokkaido, School of Dentistry, Hokkaido 061-0293, Japan;
| | - Saki Fujii
- Division of Reconstructive Surgery for Oral and Maxillofacial Region, Department of Human Biology and Pathophysiology, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido 061-0293, Japan;
| | - Akihiro Hosoya
- Division of Histology, Department of Oral Growth and Development, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido 061-0293, Japan; (H.T.); (A.H.); (K.I.)
| | - Kazuharu Irie
- Division of Histology, Department of Oral Growth and Development, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido 061-0293, Japan; (H.T.); (A.H.); (K.I.)
| | - Akira Sasaki
- Departments of Oral and Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama 700-8525, Japan; (T.O.); (Y.K.); (S.I.); (K.O.); (A.S.)
| | - Masahiro Iwamoto
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD 21201, USA;
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Thiolated bone and tendon tissue particles covalently bound in hydrogels for in vivo calvarial bone regeneration. Acta Biomater 2020; 104:66-75. [PMID: 31904561 DOI: 10.1016/j.actbio.2019.12.035] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 12/17/2019] [Accepted: 12/30/2019] [Indexed: 12/25/2022]
Abstract
Bone regeneration of large cranial defects, potentially including traumatic brain injury (TBI) treatment, presents a major problem with non-crosslinking, clinically available products due to material migration outside the defect. Commercial products such as bone cements are permanent and thus not conducive to bone regeneration, and typical commercial bioactive materials for bone regeneration do not crosslink. Our previous work demonstrated that non-crosslinking materials may be prone to material migration following surgical placement, and the current study attempted to address these problems by introducing a new hydrogel system where tissue particles are themselves the crosslinker. Specifically, a pentenoate-modified hyaluronic acid (PHA) polymer was covalently linked to thiolated tissue particles of demineralized bone matrix (TDBM) or devitalized tendon (TDVT), thereby forming an interconnected hydrogel matrix for calvarial bone regeneration. All hydrogel precursor solutions exhibited sufficient yield stress for surgical placement and an adequate compressive modulus post-crosslinking. Critical-size calvarial defects were filled with a 4% PHA hydrogel containing 10 or 20% TDBM or TDVT, with the clinical product DBXⓇ being employed as the standard of care control for the in vivo study. At 12 weeks, micro-computed tomography analysis demonstrated similar bone regeneration among the experimental groups, TDBM and TDVT, and the standard of care control DBXⓇ. The group with 10% TDBM was therefore identified as an attractive material for potential calvarial defect repair, as it additionally exhibited a sufficient initial recovery after shearing (i.e., > 80% recovery). Future studies will focus on applying a hydrogel in a rat model for treatment of TBI. STATEMENT OF SIGNIFICANCE: Non-crosslinking materials may be prone to material migration from a calvarial bone defect following surgical placement, which is problematic for materials intended for bone regeneration. Unfortunately, typical crosslinking materials such as bone cements are permanent and thus not conducive to bone regeneration, and typical bioactive materials for bone regeneration such as tissue matrix are not crosslinked in commercial products. The current study addressed these problems by introducing a new biomaterial where tissue particles are themselves the crosslinker in a hydrogel system. The current study successfully demonstrated a new material based on pentenoate-modified hyaluronic acid with thiolated demineralized bone matrix that is capable of rapid crosslinking, with desirable paste-like rheology of the precursor material for surgical placement, and with bone regeneration comparable to a commercially available standard-of-care product. Such a material may hold promise for a single-surgery treatment of severe traumatic brain injury (TBI) following hemicraniectomy.
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Dispersion of ceramic granules within human fractionated adipose tissue to enhance endochondral bone formation. Acta Biomater 2020; 102:458-467. [PMID: 31783141 DOI: 10.1016/j.actbio.2019.11.046] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 11/19/2019] [Accepted: 11/23/2019] [Indexed: 12/13/2022]
Abstract
Engineering of materials consisting of hypertrophic cartilage, as physiological template for de novo bone formation through endochondral ossification (ECO), holds promise as a new class of biological bone substitutes. Here, we assessed the efficiency and reproducibility of bone formation induced by the combination of ceramic granules with fractionated human adipose tissue ("nanofat"), followed by in vitro priming to hypertrophic cartilage. Human nanofat was mixed with different volumetric ratios of ceramic granules (0.2-1 mm) and cultured to sequentially induce proliferation (3 weeks), chondrogenesis (4 weeks), and hypertrophy (2 weeks). The resulting engineered constructs were implanted ectopically in nude mouse. The presence of ceramic granules regulated tissue formation, both in vitro and in vivo. In particular, their dispersion in nanofat at a ratio of 1:16 led to significantly increased cell number and glycosaminoglycan accumulation in vitro, as well as amount and inter-donor reproducibility of bone formation in vivo. Our findings outline a strategy for efficient utilization of nanofat for bone regeneration in an autologous setting, which should now be tested at an orthotopic site. STATEMENT OF SIGNIFICANCE: In this study, we assessed the efficiency and reproducibility of bone formation by a combination of ceramic granules and fractionated human adipose tissue, also known as nanofat, in vitro primed into hypertrophic cartilage. The resulting engineered cartilaginous constructs, when implanted ectopically in nude mouse, resulted in bone and bone marrow formation, more reproducibly and strongly that nanofat alone. This project evaluates the impact of ceramic granules on the functionality and chondrogenic differentiation of mesenchymal progenitors inside their native adipose tissue niche and outlines a novel strategy for an efficient application of nanofat for bone regeneration in an autologous setting.
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McGough MA, Boller LA, Groff DM, Schoenecker JG, Nyman JS, Wenke JC, Rhodes C, Shimko D, Duvall CL, Guelcher SA. Nanocrystalline hydroxyapatite-poly(thioketal urethane) nanocomposites stimulate a combined intramembranous and endochondral ossification response in rabbits. ACS Biomater Sci Eng 2020; 6:564-574. [PMID: 32405537 PMCID: PMC7220073 DOI: 10.1021/acsbiomaterials.9b01378] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Resorbable bone cements are replaced by bone osteoclastic resorption and osteoblastic new bone formation near the periphery. However, the ideal bone cement would be replaced by new bone through processes similar to fracture repair, which occurs through a variable combination of endochondral and intramembranous ossification. In this study, nanocrystalline hydroxyapatite (nHA)-poly(thioketal urethane) (PTKUR) cements were implanted in femoral defects in New Zealand White rabbits to evaluate ossification at 4, 12, and 18 months. Four formulations were tested: an injectable, flowable cement and three moldable putties with varying ratios of calcium phosphate to sucrose granules. New bone formation and resorption of the cement by osteoclasts occurred near the periphery. Stevenel's Blue and Safranin O staining revealed infiltration of chondrocytes into the cements and ossification of the cartilaginous intermediate. These findings suggest that nHA-PTKUR cements support combined intramembranous and endochondral ossification, resulting in enhanced osseointegration of the cement that could potentially improve patient outcomes.
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Affiliation(s)
- Madison A.P. McGough
- Department of Biomedical Engineering, Vanderbilt University, 2201 West End Ave, Nashville, TN 37235
| | - Lauren A. Boller
- Department of Biomedical Engineering, Vanderbilt University, 2201 West End Ave, Nashville, TN 37235
| | - Dustin M. Groff
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, 2201 West End Ave, Nashville, TN 37235
| | - Jonathan G. Schoenecker
- Vanderbilt Center for Bone Biology, Department of Medicine, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37212
- Department of Orthopaedics, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37212
| | - Jeffry S. Nyman
- Vanderbilt Center for Bone Biology, Department of Medicine, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37212
- Department of Orthopaedics, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37212
| | - Joseph C. Wenke
- U.S. Army Institute of Surgical Research, 3698 Chambers Rd, San Antonio, TX 78234
| | - Cheyenne Rhodes
- Medtronic Spinal & Biologics, 1800 Pyramid Pl, Memphis, TN 38132
| | - Dan Shimko
- Medtronic Spinal & Biologics, 1800 Pyramid Pl, Memphis, TN 38132
| | - Craig L. Duvall
- Department of Biomedical Engineering, Vanderbilt University, 2201 West End Ave, Nashville, TN 37235
| | - Scott A. Guelcher
- Department of Biomedical Engineering, Vanderbilt University, 2201 West End Ave, Nashville, TN 37235
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, 2201 West End Ave, Nashville, TN 37235
- Vanderbilt Center for Bone Biology, Department of Medicine, Vanderbilt University Medical Center, 1211 Medical Center Dr, Nashville, TN 37212
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40
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Junka R, Quevada K, Yu X. Acellular polycaprolactone scaffolds laden with fibroblast/endothelial cell-derived extracellular matrix for bone regeneration. J Biomed Mater Res A 2019; 108:351-364. [PMID: 31618528 DOI: 10.1002/jbm.a.36821] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 10/03/2019] [Accepted: 10/10/2019] [Indexed: 12/19/2022]
Abstract
Inconsistencies in graft osteoconduction and osteoinduction present a clinical challenge in regeneration of large bone defects. Deposition of decellularized extracellular matrix (dECM) on tissue engineered scaffolds offers an alternative approach that can enhance these properties by mimicking bone's molecular complexity and direct infiltrating cells to repair damaged bone. However, dECMs derived from homogenous cell populations do not adequately simulate the heterogeneous and vascularized microenvironment of the bone. In this study, successive culture and decellularization of fibroblasts and endothelial cells (ECs) grown on polycaprolactone microfibers was used to develop a bioactive scaffold with heterogeneous dECM mimicking endothelial basement membrane. These scaffolds had greater amount of protein and minimally increased nucleic acid content than scaffolds with homogenous culture dECM. Coomassie Blue and antibody staining revealed extensive tube formation by ECs on fibroblast dECM. Fibroblast/endothelial dECM significantly enhanced osteoblast attachment, alkaline phosphatase activity, and osteocalcin- and osteopontin-positive extracellular mineral deposits. We demonstrated that the osteoconduction of dECMs can be tailored with the appropriate combination of cells to accelerate osteoblast mineral secretion. The overall concept can be expanded to generate increasingly more complex tissue constructs for regeneration of bone defects and other vascularized tissues.
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Affiliation(s)
- Radoslaw Junka
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey
| | - Kristian Quevada
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey
| | - Xiaojun Yu
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey
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41
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Tang J, Gu Y, Zhang H, Wu L, Xu Y, Mao J, Xin T, Ye T, Deng L, Cui W, Santos HA, Chen L. Outer-inner dual reinforced micro/nano hierarchical scaffolds for promoting osteogenesis. NANOSCALE 2019; 11:15794-15803. [PMID: 31432854 DOI: 10.1039/c9nr03264a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Biomimetic scaffolds have been extensively studied for guiding osteogenesis through structural cues. Inspired by the natural bone growth process, we have employed a hierarchical outer-inner dual reinforcing strategy, which relies on the interfacial ionic bond interaction between amine/calcium and carboxyl groups, to build a nanofiber/particle dual strengthened hierarchical silk fibroin scaffold. This scaffold can provide an applicable form of osteogenic structural cue and mimic the natural bone forming process. Owing to the active interaction between compositions located in the outer pore space and the inner pore wall, the scaffold has over 4 times improvement in the mechanical properties, followed by a significant alteration of the cell-scaffold interaction pattern, demonstrated by over 2 times elevation in the spreading area and enhanced osteogenic activity potentially involving the activities of integrin, vinculin and Yes-associated protein (YAP). The in vivo performance of the scaffold identified the inherent osteogenic effect of the structural cue, which promotes rapid and uniform regeneration. Overall, the hierarchical scaffold is promising in promoting uniform bone regeneration through its specific structural cue endowed by its micro-nano construction.
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Affiliation(s)
- Jincheng Tang
- Department of Orthopedics, the First Affiliated Hospital of Soochow University, Orthopedic Institute, Soochow University, 708 Renmin Road, Suzhou, Jiangsu 215006, P.R. China.
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42
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Mikael PE, Golebiowska AA, Xin X, Rowe DW, Nukavarapu SP. Evaluation of an Engineered Hybrid Matrix for Bone Regeneration via Endochondral Ossification. Ann Biomed Eng 2019; 48:992-1005. [PMID: 31037444 DOI: 10.1007/s10439-019-02279-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 04/24/2019] [Indexed: 12/28/2022]
Abstract
Despite its regenerative ability, long and segmental bone defect repair remains a significant orthopedic challenge. Conventional tissue engineering efforts induce bone formation through intramembranous ossification (IO) which limits vascular formation and leads to poor bone regeneration. To overcome this challenge, a novel hybrid matrix comprised of a load-bearing polymer template and a gel phase is designed and assessed for bone regeneration. Our previous studies developed a synthetic ECM, hyaluronan (HA)-fibrin (FB), that is able to mimic cartilage-mediated bone formation in vitro. In this study, the well-characterized HA-FB hydrogel is combined with a biodegradable polymer template to form a hybrid matrix. In vitro evaluation of the matrix showed cartilage template formation, cell recruitment and recruited cell osteogenesis, essential stages in endochondral ossification. A transgenic reporter-mouse critical-defect model was used to evaluate the bone healing potential of the hybrid matrix in vivo. The results demonstrated host cell recruitment into the hybrid matrix that led to new bone formation and subsequent remodeling of the mineralization. Overall, the study developed and evaluated a novel load-bearing graft system for bone regeneration via endochondral ossification.
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Affiliation(s)
- Paiyz E Mikael
- Department of Materials Science, & Engineering, University of Connecticut, Storrs, CT, 06269, USA
| | - Aleksandra A Golebiowska
- Department of Biomedical Engineering, University of Connecticut, 260 Glenbrook Road, Unit 3247, Storrs, CT, 06269, USA
| | - Xiaonan Xin
- Center for Regenerative Medicine and Skeletal Development, University of Connecticut Health, Farmington, CT, 06032, USA
| | - David W Rowe
- Center for Regenerative Medicine and Skeletal Development, University of Connecticut Health, Farmington, CT, 06032, USA
| | - Syam P Nukavarapu
- Department of Materials Science, & Engineering, University of Connecticut, Storrs, CT, 06269, USA. .,Department of Biomedical Engineering, University of Connecticut, 260 Glenbrook Road, Unit 3247, Storrs, CT, 06269, USA. .,Department of Orthopaedic Surgery, University of Connecticut Health, Farmington, CT, 06032, USA.
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43
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Kuwahara ST, Serowoky MA, Vakhshori V, Tripuraneni N, Hegde NV, Lieberman JR, Crump JG, Mariani FV. Sox9+ messenger cells orchestrate large-scale skeletal regeneration in the mammalian rib. eLife 2019; 8:40715. [PMID: 30983567 PMCID: PMC6464605 DOI: 10.7554/elife.40715] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 03/22/2019] [Indexed: 11/13/2022] Open
Abstract
Most bones in mammals display a limited capacity for natural large-scale repair. The ribs are a notable exception, yet the source of their remarkable regenerative ability remains unknown. Here, we identify a Sox9-expressing periosteal subpopulation that orchestrates large-scale regeneration of murine rib bones. Deletion of the obligate Hedgehog co-receptor, Smoothened, in Sox9-expressing cells prior to injury results in a near-complete loss of callus formation and rib bone regeneration. In contrast to its role in development, Hedgehog signaling is dispensable for the proliferative expansion of callus cells in response to injury. Instead, Sox9-positive lineage cells require Hh signaling to stimulate neighboring cells to differentiate via an unknown signal into a skeletal cell type with dual chondrocyte/osteoblast properties. This type of callus cell may be critical for bridging large bone injuries. Thus despite contributing to only a subset of callus cells, Sox9-positive progenitors play a major role in orchestrating large-scale bone regeneration. Editorial note This article has been through an editorial process in which the authors decide how to respond to the issues raised during peer review. The Reviewing Editor's assessment is that all the issues have been addressed (see decision letter).
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Affiliation(s)
- Stephanie T Kuwahara
- Department of Stem Cell Biology and Regenerative Medicine, University of Southern California, Keck School of Medicine, Los Angeles, United States
| | - Maxwell A Serowoky
- Department of Stem Cell Biology and Regenerative Medicine, University of Southern California, Keck School of Medicine, Los Angeles, United States
| | - Venus Vakhshori
- Department of Orthopaedic Surgery, University of Southern California, Keck School of Medicine, Los Angeles, United States
| | - Nikita Tripuraneni
- Department of Stem Cell Biology and Regenerative Medicine, University of Southern California, Keck School of Medicine, Los Angeles, United States
| | - Neel V Hegde
- Department of Stem Cell Biology and Regenerative Medicine, University of Southern California, Keck School of Medicine, Los Angeles, United States
| | - Jay R Lieberman
- Department of Orthopaedic Surgery, University of Southern California, Keck School of Medicine, Los Angeles, United States
| | - J Gage Crump
- Department of Stem Cell Biology and Regenerative Medicine, University of Southern California, Keck School of Medicine, Los Angeles, United States
| | - Francesca V Mariani
- Department of Stem Cell Biology and Regenerative Medicine, University of Southern California, Keck School of Medicine, Los Angeles, United States
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44
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Kjalarsdóttir L, Dýrfjörd A, Dagbjartsson A, Laxdal EH, Örlygsson G, Gíslason J, Einarsson JM, Ng CH, Jónsson H. Bone remodeling effect of a chitosan and calcium phosphate-based composite. Regen Biomater 2019; 6:241-247. [PMID: 31402983 PMCID: PMC6683952 DOI: 10.1093/rb/rbz009] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 02/06/2019] [Accepted: 02/21/2019] [Indexed: 02/06/2023] Open
Abstract
Chitosan is a biocompatible polymer that has been widely studied for tissue engineering purposes. The aim of this research was to assess bone regenerative properties of an injectable chitosan and calcium phosphate-based composite and identify optimal degree of deacetylation (%DDA) of the chitosan polymer. Drill holes were generated on the left side of a mandible in Sprague-Dawley rats, and the hole was either left empty or filled with the implant. The animals were sacrificed at several time points after surgery (7–22 days) and bone was investigated using micro-CT and histology. No significant new bone formation was observed in the implants themselves at any time points. However, substantial new bone formation was observed in the rat mandible further away from the drill hole. Morphological changes indicating bone formation were found in specimens explanted on Day 7 in animals that received implant. Similar bone formation pattern was seen in control animals with an empty drill hole at later time points but not to the same extent. A second experiment was performed to examine if the %DDA of the chitosan polymer influenced the bone remodeling response. The results suggest that chitosan polymers with %DDA between 50 and 70% enhance the natural bone remodeling mechanism.
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Affiliation(s)
- Lilja Kjalarsdóttir
- Department of Orthopaedic Surgery, Landspítali University Hospital, Reykjavík, Iceland.,Faculty of Medicine, University of Iceland, Reykjavík, Iceland.,Genís hf., Siglufjördur, Iceland
| | - Arna Dýrfjörd
- Department of Materials, Biotechnology and Energy, Innovation Center Iceland, Reykjavík, Iceland
| | | | - Elín H Laxdal
- Faculty of Medicine, University of Iceland, Reykjavík, Iceland.,Department of Vascular Surgery, Landspítali University Hospital, Reykjavík, Iceland
| | - Gissur Örlygsson
- Department of Materials, Biotechnology and Energy, Innovation Center Iceland, Reykjavík, Iceland
| | | | | | | | - Halldór Jónsson
- Department of Orthopaedic Surgery, Landspítali University Hospital, Reykjavík, Iceland.,Faculty of Medicine, University of Iceland, Reykjavík, Iceland
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45
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Stiers PJ, Stegen S, van Gastel N, Van Looveren R, Torrekens S, Carmeliet G. Inhibition of the Oxygen Sensor PHD2 Enhances Tissue-Engineered Endochondral Bone Formation. J Bone Miner Res 2019; 34:333-348. [PMID: 30452097 DOI: 10.1002/jbmr.3599] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 09/10/2018] [Accepted: 09/26/2018] [Indexed: 12/29/2022]
Abstract
Tissue engineering holds great promise for bone regenerative medicine, but clinical translation remains challenging. An important factor is the low cell survival after implantation, primarily caused by the lack of functional vasculature at the bone defect. Interestingly, bone development and repair initiate predominantly via an avascular cartilage template, indicating that chondrocytes are adapted to limited vascularization. Given these advantageous properties of chondrocytes, we questioned whether tissue-engineered cartilage intermediates implanted ectopically in mice are able to form bone, even when the volume size increases. Here, we show that endochondral ossification proceeds efficiently when implant size is limited (≤30 mm3 ), but chondrogenesis and matrix synthesis are impaired in the center of larger implants, leading to a fibrotic core. Increasing the level of angiogenic growth factors does not improve this outcome, because this strategy enhances peripheral bone formation, but disrupts the conversion of cartilage into bone in the center, resulting in a fibrotic core, even in small implants. On the other hand, activation of hypoxia signaling in cells before implantation stimulates chondrogenesis and matrix production, which culminates in enhanced bone formation throughout the entire implant. Together, our results show that induction of angiogenesis alone may lead to adverse effects during endochondral bone repair, whereas activation of hypoxia signaling represents a superior therapeutic strategy to improve endochondral bone regeneration in large tissue-engineered implants. © 2018 American Society for Bone and Mineral Research.
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Affiliation(s)
- Pieter-Jan Stiers
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing, KU Leuven, Leuven, Belgium.,Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
| | - Steve Stegen
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing, KU Leuven, Leuven, Belgium.,Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
| | - Nick van Gastel
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing, KU Leuven, Leuven, Belgium.,Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
| | - Riet Van Looveren
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing, KU Leuven, Leuven, Belgium
| | - Sophie Torrekens
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing, KU Leuven, Leuven, Belgium
| | - Geert Carmeliet
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases, Metabolism and Ageing, KU Leuven, Leuven, Belgium.,Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, Leuven, Belgium
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46
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Moser C, Bardsley K, El Haj AJ, Alini M, Stoddart MJ, Bara JJ. A Perfusion Culture System for Assessing Bone Marrow Stromal Cell Differentiation on PLGA Scaffolds for Bone Repair. Front Bioeng Biotechnol 2018; 6:161. [PMID: 30525030 PMCID: PMC6262350 DOI: 10.3389/fbioe.2018.00161] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 10/16/2018] [Indexed: 12/31/2022] Open
Abstract
Biomaterials development for bone repair is currently hindered by the lack of physiologically relevant in vitro testing systems. Here we describe the novel use of a bi-directional perfusion bioreactor to support the long term culture of human bone marrow stromal cells (BMSCs) differentiated on polylactic co-glycolic acid (PLGA). Primary human BMSCs were seeded onto porous PLGA scaffolds and cultured in static vs. perfusion culture conditions for 21 days in osteogenic vs. control media. PLGA scaffolds were osteoconductive, supporting a mature osteogenic phenotype as shown by the upregulation of Runx2 and the early osteocyte marker E11. Perfusion culture enhanced the expression of osteogenic genes Osteocalcin and Osteopontin. Extracellular matrix deposition and mineralisation were spatially regulated within PLGA scaffolds in a donor dependant manner. This, together with the observed upregulation of Collagen type X suggested an environment permissive for the study of differentiation pathways associated with both intramembranous and endochondral ossification routes of bone healing. This culture system offers a platform to assess BMSC behavior on candidate biomaterials under physiologically relevant conditions. Use of this system may improve our understanding of the environmental cues orchestrating BMSC differentiation and enable fine tuning of biomaterial design as we develop tissue-engineered strategies for bone regeneration.
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Affiliation(s)
- Caroline Moser
- AO Research Institute Davos, Davos, Switzerland.,Laboratory for Translational Nutritional Biology, Department of Health Sciences and Technologies, Institute of Food Nutrition and Health, ETH Zürich, Zürich, Switzerland
| | - Katie Bardsley
- Institute for Science and Technology in Medicine, Keele University, Keele, United Kingdom
| | - Alicia J El Haj
- Institute for Science and Technology in Medicine, Keele University, Keele, United Kingdom.,Healthcare Technology Institute, Institute of Translational Medicine, University of Birmingham, Birmingham, United Kingdom
| | - Mauro Alini
- AO Research Institute Davos, Davos, Switzerland
| | - Martin J Stoddart
- AO Research Institute Davos, Davos, Switzerland.,Institute for Science and Technology in Medicine, Keele University, Keele, United Kingdom
| | - Jennifer J Bara
- AO Research Institute Davos, Davos, Switzerland.,Department of Orthopaedic Surgery, Washington University, St Louis, MO, United States
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47
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Petersen A, Princ A, Korus G, Ellinghaus A, Leemhuis H, Herrera A, Klaumünzer A, Schreivogel S, Woloszyk A, Schmidt-Bleek K, Geissler S, Heschel I, Duda GN. A biomaterial with a channel-like pore architecture induces endochondral healing of bone defects. Nat Commun 2018; 9:4430. [PMID: 30361486 PMCID: PMC6202397 DOI: 10.1038/s41467-018-06504-7] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 08/30/2018] [Indexed: 12/22/2022] Open
Abstract
Biomaterials developed to treat bone defects have classically focused on bone healing via direct, intramembranous ossification. In contrast, most bones in our body develop from a cartilage template via a second pathway called endochondral ossification. The unsolved clinical challenge to regenerate large bone defects has brought endochondral ossification into discussion as an alternative approach for bone healing. However, a biomaterial strategy for the regeneration of large bone defects via endochondral ossification is missing. Here we report on a biomaterial with a channel-like pore architecture to control cell recruitment and tissue patterning in the early phase of healing. In consequence of extracellular matrix alignment, CD146+ progenitor cell accumulation and restrained vascularization, a highly organized endochondral ossification process is induced in rats. Our findings demonstrate that a pure biomaterial approach has the potential to recapitulate a developmental bone growth process for bone healing. This might motivate future strategies for biomaterial-based tissue regeneration.
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Affiliation(s)
- A Petersen
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.
- Berlin-Brandenburg Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.
| | - A Princ
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - G Korus
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - A Ellinghaus
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - H Leemhuis
- Matricel GmbH, Kaiserstrasse 100, 52134, Herzogenrath, Germany
| | - A Herrera
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
- Berlin-Brandenburg School for Regenerative Therapies, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - A Klaumünzer
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - S Schreivogel
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
- Berlin-Brandenburg School for Regenerative Therapies, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - A Woloszyk
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
- Department of Orthopaedic Surgery, University of Texas Health Science Center San Antonio, 7703 Floyd Curl Dr, 78229, San Antonio, TX, USA
| | - K Schmidt-Bleek
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
- Berlin-Brandenburg Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - S Geissler
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
- Berlin-Brandenburg Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - I Heschel
- Matricel GmbH, Kaiserstrasse 100, 52134, Herzogenrath, Germany
| | - G N Duda
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
- Berlin-Brandenburg Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
- Berlin-Brandenburg School for Regenerative Therapies, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
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48
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Lenas P. The Thermodynamics of Development in Bioartificial Tissue Design. Trends Biotechnol 2018; 36:1116-1126. [PMID: 30297153 DOI: 10.1016/j.tibtech.2018.06.006] [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: 03/05/2018] [Revised: 06/13/2018] [Accepted: 06/18/2018] [Indexed: 12/30/2022]
Abstract
The fabrication of bioartificial tissues with authentic structures that could assure their clinical efficacy remains a challenging problem. A new paradigm has emerged that designs bioartificial tissues as intermediate in development tissue forms, which can inherently progress autonomously on developmental pathways, self-organizing their cells into tissue structures as in their in vivo development. Biological processes involved in energy exchange between co-developing tissues are responsible for cell organization into the thermodynamically robust cellular patterns of tissue structures. Bioartificial tissue design rules that aim towards in vitro recapitulation of these processes can ensure the thermodynamic operation of developing tissues, leading to formation of the cellular patterns of tissue structures.
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Affiliation(s)
- Petros Lenas
- College of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
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49
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Superior calvarial bone regeneration using pentenoate-functionalized hyaluronic acid hydrogels with devitalized tendon particles. Acta Biomater 2018; 71:148-155. [PMID: 29496620 DOI: 10.1016/j.actbio.2018.02.013] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 02/07/2018] [Accepted: 02/09/2018] [Indexed: 12/30/2022]
Abstract
Traumatic brain injury (TBI) is a life-threatening condition defined by internal brain herniation. Severe TBI is commonly treated by a two-stage surgical intervention, where decompressive craniectomy is first conducted to remove a large portion of calvarial bone and allow unimpeded brain swelling. In the second surgery, spaced weeks to months after the first, cranioplasty is performed to restore the cranial bone. Hydrogels with paste-like precursor solutions for surgical placement may potentially revolutionize TBI treatment by permitting a single-stage surgical intervention, capable of being implanted with the initial surgery, remaining pliable during brain swelling, and tuned to regenerate calvarial bone after brain swelling has subsided. The current study evaluated the use of photocrosslinkable pentenoate-functionalized hyaluronic acid (PHA) and non-crosslinking hyaluronic acid (HA) hydrogels encapsulating naturally derived tissue particles of demineralized bone matrix (DBM), devitalized cartilage (DVC), devitalized meniscus (DVM), or devitalized tendon (DVT) for bone regeneration in critical-size rat calvarial defects. All hydrogel precursors exhibited a yield stress for placement and addition of particles increased the average material compressive modulus. The HA-DBM (4-30%), PHA (4%), and PHA-DVT (4-30%) groups had 5 (p < 0.0001), 3.1, and 3.2 (p < 0.05) times greater regenerated bone volume compared to the sham (untreated defect) group, respectively. In vitro cell studies suggested that the PHA-DVT (4-10%) group would have the most desirable performance. Overall, hydrogels containing DVT particles outperformed other materials in terms of bone regeneration in vivo and calcium deposition in vitro. Hydrogels containing DVT will be further evaluated in future rat TBI studies. STATEMENT OF SIGNIFICANCE Traumatic brain injury (TBI) is a life-threatening condition characterized by severe brain swelling and is currently treated by a two-stage surgical procedure. Complications associated with the two-stage surgical intervention include the occurrence of the condition termed syndrome of the trephined; however, the condition is completely reversible once the secondary surgery is performed. A desirable TBI treatment would include a single surgical intervention to avoid syndrome of the trephined altogether. The first hurdle in reaching the overall goal is to develop a pliable hydrogel material that can regenerate the patient's bone. The development of a pliable hydrogel technology would greatly impact the field of bone regeneration for TBI application and other areas of bone regeneration.
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50
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Townsend JM, Zabel TA, Feng Y, Wang J, Andrews BT, Nudo RJ, Berkland CJ, Detamore MS. Effects of tissue processing on bioactivity of cartilage matrix-based hydrogels encapsulating osteoconductive particles. ACTA ACUST UNITED AC 2018; 13:034108. [PMID: 29411714 DOI: 10.1088/1748-605x/aaad77] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In the treatment of severe traumatic brain injury (TBI), decompressive craniectomy is commonly used to remove a large portion of calvarial bone to allow unimpeded brain swelling. Hydrogels have the potential to revolutionize TBI treatment by permitting a single-surgical intervention, remaining pliable during brain swelling, and tuned to regenerate bone after swelling has subsided. With this motivation, our goal is to present a pliable material capable of regenerating calvarial bone across a critical size defect. We therefore proposed the use of a methacrylated solubilized decellularized cartilage (MeSDCC) hydrogel encapsulating synthetic osteogenic particles of hydroxyapatite nanofibers, bioglass microparticles, or added rat bone marrow-derived mesenchymal stem cells (rMSCs) for bone regeneration in critical-size rat calvarial defects. Fibrin hydrogels were employed as a control material for the study. MeSDCC hydrogels exhibited sufficient rheological performance for material placement before crosslinking ([Formula: see text] > 500 Pa), and sufficient compressive moduli post-crosslinking (E > 150 kPa). In vitro experiments suggested increased calcium deposition for cells seeded on the MeSDCC material; however, in vivo bone regeneration was minimal in both MeSDCC and fibrin groups, even with colloidal materials or added rMSCs. Minimal bone regeneration in the MeSDCC test groups may potentially be attributed to cartilage solubilization after decellularization, in which material signals may have degraded from enzymatic treatment. Looking to the future, an improvement in the bioactivity of the material will be crucial to the success of bone regeneration strategies for TBI treatment.
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Affiliation(s)
- Jakob M Townsend
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK 73019, United States of America
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