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Zhang Y, Xu H, Wang J, Fan X, Tian F, Wang Z, Lu B, Wu W, Liu Y, Ai Y, Wang X, Zhu L, Jia S, Hao D. Incorporation of synthetic water-soluble curcumin polymeric drug within calcium phosphate cements for bone defect repairing. Mater Today Bio 2023; 20:100630. [PMID: 37114092 PMCID: PMC10127129 DOI: 10.1016/j.mtbio.2023.100630] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/20/2023] [Accepted: 04/04/2023] [Indexed: 04/29/2023] Open
Abstract
Modified macroporous structures and active osteogenic substances are necessary to overcome the limited bone regeneration capacity and low degradability of self-curing calcium phosphate cement (CPC). Curcumin (CUR), which possesses strong osteogenic activity and poor aqueous solubility/bioavailability, esterifies the side chains in hyaluronic acid (HA) to form a water-soluble CUR-HA macromolecule. In this study, we incorporated the CUR-HA and glucose microparticles (GMPs) into the CPC powder to fabricate the CUR-HA/GMP/CPC composite, which not only retained the good injectability and mechanical strength of bone cements, but also significantly increased the cement porosity and sustained release property of CUR-HA in vitro. CUR-HA incorporation greatly improved the differentiation ability of bone marrow mesenchymal stem cells (BMSCs) to osteoblasts by activating the RUNX family transcription factor 2/fibroblast growth factor 18 (RUNX2/FGF18) signaling pathway, increasing the expression of osteocalcin and enhancing the alkaline phosphatase activity. In addition, in vivo implantation of CUR-HA/GMP/CPC into femoral condyle defects dramatically accelerated the degradation rate of cement and boosted local vascularization and osteopontin protein expression, and consequently promoted rapid bone regeneration. Therefore, macroporous CPC based composite cement with CUR-HA shows a remarkable ability to repair bone defects and is a promising translational application of modified CPC in clinical practice.
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Affiliation(s)
- Ying Zhang
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi'an, Shaanxi, China
| | - Hailiang Xu
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi'an, Shaanxi, China
| | - Jing Wang
- Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi'an, China
| | - Xiaochen Fan
- Department of Chinese Medicine and Rehabilitation, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Fang Tian
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi'an, Shaanxi, China
| | - Zhiyuan Wang
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi'an, Shaanxi, China
| | - Botao Lu
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi'an, Shaanxi, China
| | - Weidong Wu
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi'an, Shaanxi, China
| | - Youjun Liu
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi'an, Shaanxi, China
| | - Yixiang Ai
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi'an, Shaanxi, China
| | - Xiaohui Wang
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi'an, Shaanxi, China
| | - Lei Zhu
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi'an, Shaanxi, China
- Corresponding author. Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China; Shaanxi Key Laboratory of Spine Bionic Treatment, Xi'an, Shaanxi, China.
| | - Shuaijun Jia
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi'an, Shaanxi, China
- Corresponding author. Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China; Shaanxi Key Laboratory of Spine Bionic Treatment, Xi'an, Shaanxi, China.
| | - Dingjun Hao
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China
- Shaanxi Key Laboratory of Spine Bionic Treatment, Xi'an, Shaanxi, China
- Corresponding author. Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, China; Shaanxi Key Laboratory of Spine Bionic Treatment, Xi'an, Shaanxi, China.
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2
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Ren Y, Senarathna J, Grayson WL, Pathak AP. State-of-the-art techniques for imaging the vascular microenvironment in craniofacial bone tissue engineering applications. Am J Physiol Cell Physiol 2022; 323:C1524-C1538. [PMID: 36189973 PMCID: PMC9829486 DOI: 10.1152/ajpcell.00195.2022] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 09/07/2022] [Accepted: 09/27/2022] [Indexed: 01/21/2023]
Abstract
Vascularization is a crucial step during musculoskeletal tissue regeneration via bioengineered constructs or grafts. Functional vasculature provides oxygen and nutrients to the graft microenvironment, facilitates wound healing, enhances graft integration with host tissue, and ensures the long-term survival of regenerating tissue. Therefore, imaging de novo vascularization (i.e., angiogenesis), changes in microvascular morphology, and the establishment and maintenance of perfusion within the graft site (i.e., vascular microenvironment or VME) can provide essential insights into engraftment, wound healing, as well as inform the design of tissue engineering (TE) constructs. In this review, we focus on state-of-the-art imaging approaches for monitoring the VME in craniofacial TE applications, as well as future advances in this field. We describe how cutting-edge in vivo and ex vivo imaging methods can yield invaluable information regarding VME parameters that can help characterize the effectiveness of different TE constructs and iteratively inform their design for enhanced craniofacial bone regeneration. Finally, we explicate how the integration of novel TE constructs, preclinical model systems, imaging techniques, and systems biology approaches could usher in an era of "image-based tissue engineering."
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Affiliation(s)
- Yunke Ren
- Department of Biomedical Engineering, the Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Janaka Senarathna
- Russell H. Morgan Department of Radiology and Radiological Sciences, the Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Warren L Grayson
- Department of Biomedical Engineering, the Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland
- Translational Tissue Engineering Center, Johns Hopkins University, Baltimore, Maryland
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, Maryland
| | - Arvind P Pathak
- Russell H. Morgan Department of Radiology and Radiological Sciences, the Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Biomedical Engineering, the Johns Hopkins University School of Medicine, Baltimore, Maryland
- Sidney Kimmel Comprehensive Cancer Center, the Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Electrical Engineering, Johns Hopkins University, Baltimore, Maryland
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, Maryland
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3
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Cao SS, Li SY, Geng YM, Kapat K, Liu SB, Perera FH, Li Q, Terheyden H, Wu G, Che YJ, Miranda P, Zhou M. Prefabricated 3D-Printed Tissue-Engineered Bone for Mandibular Reconstruction: A Preclinical Translational Study in Primate. ACS Biomater Sci Eng 2021; 7:5727-5738. [PMID: 34808042 PMCID: PMC8672350 DOI: 10.1021/acsbiomaterials.1c00509] [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] [Indexed: 11/29/2022]
Abstract
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The
advent of three dimensionally (3D) printed customized bone
grafts using different biomaterials has enabled repairs of complex
bone defects in various in vivo models. However, studies related to
their clinical translations are truly limited. Herein, 3D printed
poly(lactic-co-glycolic acid)/β-tricalcium
phosphate (PLGA/TCP) and TCP scaffolds with or without recombinant
bone morphogenetic protein −2 (rhBMP-2) coating were utilized
to repair primate’s large-volume mandibular defects and compared
efficacy of prefabricated tissue-engineered bone (PTEB) over direct
implantation (without prefabrication). 18F-FDG PET/CT was
explored for real-time monitoring of bone regeneration and vascularization.
After 3-month’s prefabrication, the original 3D-architecture
of the PLGA/TCP-BMP scaffold was found to be completely lost, while
it was properly maintained in TCP-BMP scaffolds. Besides, there was
a remarkable decrease in the PLGA/TCP-BMP scaffold density and increase
in TCP-BMP scaffolds density during ectopic (within latissimus dorsi
muscle) and orthotopic (within mandibular defect) implantation, indicating
regular bone formation with TCP-BMP scaffolds. Notably, PTEB based
on TCP-BMP scaffold was successfully fabricated with pronounced effects
on bone regeneration and vascularization based on radiographic, 18F-FDG PET/CT, and histological evaluation, suggesting a promising
approach toward clinical translation.
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Affiliation(s)
- Shuai-Shuai Cao
- Department of Oral and Maxillofacial Surgery, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510182, China
| | - Shu-Yi Li
- Department of Oral and Maxillofacial Surgery, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510182, China.,Department of Oral and Maxillofacial Surgery/Pathology, Amsterdam UMC and Academic Center for Dentistry Amsterdam (ACTA), Amsterdam Movement Science, de Boelelaan, Vrije Universiteit Amsterdam 1117, Amsterdam, The Netherlands
| | - Yuan-Ming Geng
- Department of Stomatology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Kausik Kapat
- Department of Oral and Maxillofacial Surgery, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510182, China
| | - Shang-Bin Liu
- Department of Oral and Maxillofacial Surgery, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510182, China
| | - Fidel Hugo Perera
- Department of Mechanical, Energy and Materials Engineering, University of Extremadura, Industrial Engineering School, Avda. de Elvas s/n, 06006 Badajoz, Spain
| | - Qian Li
- Hangzhou Jiuyuan Gene Engineering Co., Ltd., Hangzhou 3100018, China
| | - Hendrik Terheyden
- Department of Oral and Maxillofacial Surgery, Red Cross Hospital, Kassel 34117, Germany
| | - Gang Wu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam 1117, The Netherlands
| | - Yue-Juan Che
- Department of Anesthesia, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China
| | - Pedro Miranda
- Department of Mechanical, Energy and Materials Engineering, University of Extremadura, Industrial Engineering School, Avda. de Elvas s/n, 06006 Badajoz, Spain
| | - Miao Zhou
- Department of Oral and Maxillofacial Surgery, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510182, China
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4
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Schulze S, Rothe R, Neuber C, Hauser S, Ullrich M, Pietzsch J, Rammelt S. Men who stare at bone: multimodal monitoring of bone healing. Biol Chem 2021; 402:1397-1413. [PMID: 34313084 DOI: 10.1515/hsz-2021-0170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 07/12/2021] [Indexed: 12/19/2022]
Abstract
Knowledge of the physiological and pathological processes, taking place in bone during fracture healing or defect regeneration, is essential in order to develop strategies to enhance bone healing under normal and critical conditions. Preclinical testing allows a wide range of imaging modalities that may be applied both simultaneously and longitudinally, which will in turn lower the number of animals needed to allow a comprehensive assessment of the healing process. This work provides an up-to-date review on morphological, functional, optical, biochemical, and biophysical imaging techniques including their advantages, disadvantages and potential for combining them in a multimodal and multiscale manner. The focus lies on preclinical testing of biomaterials modified with artificial extracellular matrices in various animal models to enhance bone remodeling and regeneration.
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Affiliation(s)
- Sabine Schulze
- University Center of Orthopaedics, Trauma and Plastic Surgery (OUPC), University Hospital Carl Gustav Carus, D-01307Dresden, Germany.,Center for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, D-01307Dresden, Germany
| | - Rebecca Rothe
- Department of Radiopharmaceutical and Chemical Biology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), D-01328Dresden, Germany.,Faculty of Chemistry and Food Chemistry, School of Science, Technische Universität Dresden, D-01062Dresden, Germany
| | - Christin Neuber
- Department of Radiopharmaceutical and Chemical Biology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), D-01328Dresden, Germany
| | - Sandra Hauser
- Department of Radiopharmaceutical and Chemical Biology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), D-01328Dresden, Germany
| | - Martin Ullrich
- Department of Radiopharmaceutical and Chemical Biology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), D-01328Dresden, Germany
| | - Jens Pietzsch
- Department of Radiopharmaceutical and Chemical Biology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), D-01328Dresden, Germany.,Faculty of Chemistry and Food Chemistry, School of Science, Technische Universität Dresden, D-01062Dresden, Germany
| | - Stefan Rammelt
- University Center of Orthopaedics, Trauma and Plastic Surgery (OUPC), University Hospital Carl Gustav Carus, D-01307Dresden, Germany.,Center for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, D-01307Dresden, Germany.,Center for Regenerative Therapies Dresden (CRTD), D-01307Dresden, Germany
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5
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Lodoso-Torrecilla I, van den Beucken J, Jansen J. Calcium phosphate cements: Optimization toward biodegradability. Acta Biomater 2021; 119:1-12. [PMID: 33065287 DOI: 10.1016/j.actbio.2020.10.013] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 08/31/2020] [Accepted: 10/09/2020] [Indexed: 12/18/2022]
Abstract
Synthetic calcium phosphate (CaP) ceramics represent the most widely used biomaterials for bone regenerative treatments due to their biological performance that is characterized by bioactivity and osteoconductive properties. From a clinical perspective, injectable CaP cements (CPCs) are highly appealing, as CPCs can be applied using minimally invasive surgery and can be molded to optimally fill irregular bone defects. Such CPCs are prepared from a powder and a liquid component, which upon mixing form a paste that can be injected into a bone defect and hardens in situ within an appropriate clinical time window. However, a major drawback of CPCs is their poor degradability. Ideally, CPCs should degrade at a suitable pace to allow for concomitant new bone to form. To overcome this shortcoming, control over CPC degradation has been explored using multiple approaches that introduce macroporosity within CPCs. This strategy enables faster degradation of CPC by increasing the surface area available to interact with the biological surroundings, leading to accelerated new bone formation. For a comprehensive overview of the path to degradable CPCs, this review presents the experimental procedures followed for their development with specific emphasis on (bio)material properties and biological performance in pre-clinical bone defect models.
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6
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Fragogeorgi EA, Rouchota M, Georgiou M, Velez M, Bouziotis P, Loudos G. In vivo imaging techniques for bone tissue engineering. J Tissue Eng 2019; 10:2041731419854586. [PMID: 31258885 PMCID: PMC6589947 DOI: 10.1177/2041731419854586] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Bone is a dynamic tissue that constantly undergoes modeling and remodeling. Bone tissue engineering relying on the development of novel implant scaffolds for the treatment of pre-clinical bone defects has been extensively evaluated by histological techniques. The study of bone remodeling, that takes place over several weeks, is limited by the requirement of a large number of animals and time-consuming and labor-intensive procedures. X-ray-based imaging methods that can non-invasively detect the newly formed bone tissue have therefore been extensively applied in pre-clinical research and in clinical practice. The use of other imaging techniques at a pre-clinical level that act as supportive tools is convenient. This review mainly focuses on nuclear imaging methods (single photon emission computed tomography and positron emission tomography), either alone or used in combination with computed tomography. It addresses their application to small animal models with bone defects, both untreated and filled with substitute materials, to boost the knowledge on bone regenerative processes.
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Affiliation(s)
- Eirini A Fragogeorgi
- Institute of Nuclear & Radiological Sciences and Technology, Energy & Safety (INRASTES), NCSR "Demokritos", Athens, Greece
| | - Maritina Rouchota
- Bioemission Technology Solutions (BIOEMTECH), Athens, Greece / Lefkippos Attica Technology Park, NCSR "Demokritos", Athens, Greece
| | - Maria Georgiou
- Department of Biomedical Engineering, University of West Attica, Athens, Greece
| | - Marisela Velez
- Instituto de Catálisis y Petroleoquímica (CSIC), Madrid, Spain
| | - Penelope Bouziotis
- Institute of Nuclear & Radiological Sciences and Technology, Energy & Safety (INRASTES), NCSR "Demokritos", Athens, Greece
| | - George Loudos
- Institute of Nuclear & Radiological Sciences and Technology, Energy & Safety (INRASTES), NCSR "Demokritos", Athens, Greece.,Bioemission Technology Solutions (BIOEMTECH), Athens, Greece / Lefkippos Attica Technology Park, NCSR "Demokritos", Athens, Greece
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7
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Zheng X, Huang J, Lin J, Yang D, Xu T, Chen D, Zan X, Wu A. 3D bioprinting in orthopedics translational research. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2019; 30:1172-1187. [PMID: 31124402 DOI: 10.1080/09205063.2019.1623989] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- XuanQi Zheng
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
| | - JinFeng Huang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
| | - JiaLiang Lin
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
| | - DeJun Yang
- Wenzhou Institute of Biomaterials and Engineering, CNITECH, Chinese Academy of Sciences, Wenzhou, China
| | - TianZhen Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
| | - Dong Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
| | - Xingjie Zan
- Wenzhou Institute of Biomaterials and Engineering, CNITECH, Chinese Academy of Sciences, Wenzhou, China
| | - AiMin Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, China
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8
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Hulsart-Billström G, Selvaraju RK, Estrada S, Lubberink M, Asplund V, Bergman K, Marsell R, Larsson S, Antoni G. Non-invasive tri-modal visualisation via PET/SPECT/μCT of recombinant human bone morphogenetic protein-2 retention and associated bone regeneration: A proof of concept. J Control Release 2018; 285:178-186. [DOI: 10.1016/j.jconrel.2018.07.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 07/06/2018] [Accepted: 07/06/2018] [Indexed: 01/02/2023]
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A theranostic dental pulp capping agent with improved MRI and CT contrast and biological properties. Acta Biomater 2017; 62:340-351. [PMID: 28842333 DOI: 10.1016/j.actbio.2017.08.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 07/12/2017] [Accepted: 08/12/2017] [Indexed: 11/21/2022]
Abstract
Different materials have been used for vital dental pulp treatment. Preferably a pulp capping agent should show appropriate biological performance, excellent handling properties, and a good imaging contrast. These features can be delivered into a single material through the combination of therapeutic and diagnostic agents (i.e. theranostic). Calcium phosphate based composites (CPCs) are potentially ideal candidate for pulp treatment, although poor imaging contrast and poor dentino-inductive properties are limiting their clinical use. In this study, a theranostic dental pulp capping agent was developed. First, imaging properties of the CPC were improved by using a core-shell structured dual contrast agent (csDCA) consisting of superparamagnetic iron oxide (SPIO) and colloidal gold, as MRI and CT contrast agent respectively. Second, biological properties were implemented by using a dentinogenic factor (i.e. bone morphogenetic protein 2, BMP-2). The obtained CPC/csDCA/BMP-2 composite was tested in vivo, as direct pulp capping agent, in a male Habsi goat incisor model. Our outcomes showed no relevant alteration of the handling and mechanical properties (e.g. setting time, injectability, and compressive strength) by the incorporation of csDCA particles. In vivo results proved MRI contrast enhancement up to 7weeks. Incisors treated with BMP-2 showed improved tertiary dentin deposition as well as faster cement degradation as measured by µCT assessment. In conclusion, the presented theranostic agent matches the imaging and regenerative requirements for pulp capping applications. STATEMENT OF SIGNIFICANCE In this study, we combined diagnostic and therapeutic agents in order to developed a theranostic pulp capping agent with enhanced MRI and CT contrast and improved dentin regeneration ability. In our study we cover all the steps from material preparation, mechanical and in vitro characterization, to in vivo study in a goat dental model. To the best of our knowledge, this is the first time that a theranostic pulp capping material have been developed and tested in an in vivo animal model. Our promising results in term of imaging contrast enhancement and of induction of new dentin formation, open a new scenario in the development of innovative dental materials.
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Cheng C, Alt V, Pan L, Thormann U, Schnettler R, Strauss LG, Heinemann S, Schumacher M, Gelinsky M, Nies B, Dimitrakopoulou-Strauss A. Application of F-18-sodium fluoride (NaF) dynamic PET-CT (dPET-CT) for defect healing: a comparison of biomaterials in an experimental osteoporotic rat model. Med Sci Monit 2014; 20:1942-9. [PMID: 25317537 PMCID: PMC4210358 DOI: 10.12659/msm.891073] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Accepted: 06/20/2014] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND The aim of the current study was to measure and compare the effect of various biomaterials for the healing of osteoporotic bone defects in the rat femur using 18F-sodium fluoride dPET-CT. MATERIAL AND METHODS Osteoporosis was induced by ovariectomy and a calcium-restricted diet. After 3 months, rats were operated on to create a 4-mm wedge-shaped defect in the distal metaphyseal femur. Bone substitution materials of calcium phosphate cement (CPC), composites of collagen and silica, and iron foams with interconnecting pores were inserted. Strontium or bisphosphonate, which are well known for having positive effects in osteoporosis treatment, were added into the materials. Eighteen weeks after osteoporosis induction and 6 weeks following femoral surgery, dPET-CT studies scan were performed with 18F-Sodium Fluoride. Standardized uptake values (SUVs) and a 2-tissue compartmental learning-machine model (K1-k4, vessel density [VB], influx [ki]) were used for quantitative analysis. RESULTS k3, reflecting the formation of fluoroapatite, revealed a statistically significant increase at the biomaterial-bone interface due to the Sr release from strontium-modified calcium phosphate cement (SrCPC) compared to CPC, which demonstrated enhanced new bone formation. In addition, k3 as measured in the porous scaffold silica/collagen xerogel (Sc-B30), showed a significant increase based on Wilcoxon rank-sum test (p<0.05) as compared with monolithic silica/collagen xerogel (B30) in the defect region. Furthermore, ki, reflecting the net plasma clearance of tracer to bone mineral measured in the iron foam with coating of the bisphosphonate zoledronic acid (Fe-BP), was enhanced as compared with plain iron foam (Fe) in the defect region. CONCLUSIONS k3 was the most significant parameter for the characterization of healing processes and revealed the best differentiation between the 2 different biomaterials. PET scanning using 18F-sodium fluoride seems to be a sensitive and useful method for evaluation of bone healing after replacement with these biomaterials.
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Affiliation(s)
- Caixia Cheng
- Clinical Cooperation Unit Nuclear Medicine, German Cancer Research Center, Heidelberg, Germany
| | - Volker Alt
- Department of Trauma Surgery, University Hospital Giessen-Marburg GmbH, Giessen, Germany
| | - Leyun Pan
- Clinical Cooperation Unit Nuclear Medicine, German Cancer Research Center, Heidelberg, Germany
| | - Ulrich Thormann
- Department of Trauma Surgery, University Hospital Giessen-Marburg GmbH, Giessen, Germany
| | - Reinhard Schnettler
- Department of Trauma Surgery, University Hospital Giessen-Marburg GmbH, Giessen, Germany
| | - Ludwig G. Strauss
- Clinical Cooperation Unit Nuclear Medicine, German Cancer Research Center, Heidelberg, Germany
| | - Sascha Heinemann
- Max-Bergmann-Center of Biomaterials, Institute of Materials Science, Technische Universität Dresden, Dresden, Germany
| | - Matthias Schumacher
- Technische Universität Dresden, Centre for Translational Bone, Joint and Soft Tissue Research, Medical Faculty and University Hospital Carl Gustav Carus, Dresden, Germany
| | - Michael Gelinsky
- Technische Universität Dresden, Centre for Translational Bone, Joint and Soft Tissue Research, Medical Faculty and University Hospital Carl Gustav Carus, Dresden, Germany
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11
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Biological effect of BMP-2 monitored by PET/CT. J Control Release 2014; 183:178. [DOI: 10.1016/j.jconrel.2014.04.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 11/04/2013] [Accepted: 11/09/2013] [Indexed: 11/23/2022]
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