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Yang M, Cai X, Wang C, Wang Z, Xue F, Chu C, Bai J, Liu Q, Ni X. Highly Stable Amorphous (Pyro)phosphate Aggregates: Pyrophosphate as a Carrier for Bioactive Ions and Drugs in Bone Repair Applications. ACS OMEGA 2024; 9:23724-23740. [PMID: 38854518 PMCID: PMC11154929 DOI: 10.1021/acsomega.4c01660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 05/03/2024] [Accepted: 05/09/2024] [Indexed: 06/11/2024]
Abstract
Pyrophosphate is widely used as an iron supplement because of its excellent complexation and hydrolysis ability; however, there are few reports on the use of pyrophosphate in active ionophores for bone repair. In this research, we proposed a simple and efficient ultrasonic method to prepare magnesium-calcium (pyro)phosphate aggregates (AMCPs). Due to strong hydration, AMCPs maintain a stable amorphous form even at high temperatures (400 °C). By changing the molar ratio of calcium and magnesium ions, the content of calcium and magnesium ions can be customized. AMCPs had surface negativity and complexing ability that realized the controlled release of ions (Ca2+, Mg2+, and P) and drugs (such as doxorubicin) over a long period. Pyrophosphate gave it an excellent bacteriostatic effect. Increasingly released Mg2+ exhibited improved bioactivity though the content of Ca2+ decreased. While Mg2+ content was regulated to 15 wt %, it performed significantly enhanced stimulation on the proliferation, attachment, and differentiation (ALP activity, calcium nodules, and the related gene expression of osteogenesis) of mouse embryo osteoblast precursor cells (MC3T3-E1). Furthermore, the high content of Mg2+ also effectively promoted the proliferation, attachment, and migration of human umbilical vein endothelial cells (HUVECs) and the expression of angiogenic genes. In conclusion, pyrophosphate was an excellent carrier for bioactive ions, and the AMCPs we prepared had a variety of active functions for multiscenario bone repair applications.
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Affiliation(s)
- Mengmeng Yang
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189 Jiangsu, China
- Center of Medical Physics, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, 213003 Jiangsu, China
- Center for Global Health, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166 Jiangsu, China
| | - Xiang Cai
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189 Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Nanjing, 211189 Jiangsu, China
| | - Cheng Wang
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189 Jiangsu, China
| | - Zan Wang
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189 Jiangsu, China
| | - Feng Xue
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189 Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Nanjing, 211189 Jiangsu, China
- Institute of Biomedical Devices (Suzhou), Southeast University, Suzhou 215163, China
| | - Chenglin Chu
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189 Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Nanjing, 211189 Jiangsu, China
| | - Jing Bai
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189 Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Nanjing, 211189 Jiangsu, China
- Institute of Biomedical Devices (Suzhou), Southeast University, Suzhou 215163, China
- Jiangsu Key Laboratory for Light Metal Alloys, Nanjing 211212, China
| | - Qizhan Liu
- School of Materials Science and Engineering, Southeast University, Nanjing, 211189 Jiangsu, China
- Center for Global Health, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166 Jiangsu, China
| | - Xinye Ni
- Center of Medical Physics, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, 213003 Jiangsu, China
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2
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Indurkar A, Kudale P, Rjabovs V, Heinmaa I, Demir Ö, Kirejevs M, Rubenis K, Chaturbhuj G, Turks M, Locs J. Small organic molecules containing amorphous calcium phosphate: synthesis, characterization and transformation. Front Bioeng Biotechnol 2024; 11:1329752. [PMID: 38283170 PMCID: PMC10811600 DOI: 10.3389/fbioe.2023.1329752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 12/13/2023] [Indexed: 01/30/2024] Open
Abstract
As the primary solid phase, amorphous calcium phosphate (ACP) is a pivotal precursor in cellular biomineralization. The intrinsic interplay between ACP and Howard factor underscores the significance of understanding their association for advancing biomimetic ACP development. While organic compounds play established roles in biomineralization, this study presents the synthesis of ACP with naturally occurring organic compounds (ascorbate, glutamate, and itaconate) ubiquitously found in mitochondria and vital for bone remodeling and healing. The developed ACP with organic compounds was meticulously characterized using XRD, FTIR, and solid-state 13C and 31P NMR. The morphological analysis revealed the characteristic spherical morphology with particle size close to 20 nm of all synthesized ACP variants. Notably, the type of organic compound strongly influences true density, specific surface area, particle size, and transformation. The in vitro analysis was performed with MC3T3-E1 cells, indicating the highest cell viability with ACP_ASC (ascorbate), followed by ACP_ITA (itaconate). The lowest cell viability was observed with 10 %w/v of ACP_GLU (glutamate); however, 1 %w/v of ACP_GLU was cytocompatible. Further, the effect of small organic molecules on the transformation of ACP to low crystalline apatite (Ap) was examined in Milli-Q® water, PBS, and α-MEM.
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Affiliation(s)
- Abhishek Indurkar
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Riga, Latvia
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Riga, Latvia
| | - Pawan Kudale
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai, India
| | - Vitālijs Rjabovs
- Institute of Technology of Organic Chemistry, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Riga, Latvia
| | - Ivo Heinmaa
- National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
| | - Öznur Demir
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Riga, Latvia
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Riga, Latvia
| | - Matvejs Kirejevs
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Riga, Latvia
| | - Kristaps Rubenis
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Riga, Latvia
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Riga, Latvia
| | - Ganesh Chaturbhuj
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai, India
| | - Māris Turks
- Institute of Technology of Organic Chemistry, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Riga, Latvia
| | - Janis Locs
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Riga, Latvia
- Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Riga, Latvia
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3
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Schröter L, Kaiser F, Preißler AL, Wohlfahrt P, Küppers O, Gbureck U, Ignatius A. Ready-To-Use and Rapidly Biodegradable Magnesium Phosphate Bone Cement: In Vivo Evaluation in Sheep. Adv Healthc Mater 2023; 12:e2300914. [PMID: 37224104 DOI: 10.1002/adhm.202300914] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/16/2023] [Indexed: 05/26/2023]
Abstract
In clinical practice, hydroxyapatite (HA) cements for bone defect treatment are frequently prepared by mixing a powder component and a liquid component shortly before implantation in the operation theater, which is time-consuming and error-prone. In addition, HA cements are only slightly resorbed, that is, cement residues can still be found in the bone years after implantation. Here, these challenges are addressed by a prefabricated magnesium phosphate cement paste based on glycerol, which is ready-to-use and can be directly applied during surgery. By using a trimodal particle size distribution (PSD), the paste is readily injectable and exhibits a compressive strength of 9-14 MPa after setting. Struvite (MgNH4 PO4 ·6H2 O), dittmarite (MgNH4 PO4 ·H2 O), farringtonite (Mg3 (PO4 )2 ), and newberyite (MgHPO4 ·3H2 O) are the mineral phases present in the set cement. The paste developed here features a promising degradation of 37% after four months in an ovine implantation model, with 25% of the implant area being newly formed bone. It is concluded that the novel prefabricated paste improves application during surgery, has a suitable degradation rate, and supports bone regeneration.
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Affiliation(s)
- Lena Schröter
- Institute for Orthopedic Research and Biomechanics, Ulm University Medical Center, Helmholtzstraße 14, D-89081, Ulm, Germany
| | - Friederike Kaiser
- Department for Functional Materials in Medicine and Dentistry, University Hospital Würzburg, Pleicherwall 2, D-97070, Würzburg, Germany
| | - Anna-Lena Preißler
- Department for Functional Materials in Medicine and Dentistry, University Hospital Würzburg, Pleicherwall 2, D-97070, Würzburg, Germany
| | - Philipp Wohlfahrt
- Department for Functional Materials in Medicine and Dentistry, University Hospital Würzburg, Pleicherwall 2, D-97070, Würzburg, Germany
| | - Oliver Küppers
- Institute for Orthopedic Research and Biomechanics, Ulm University Medical Center, Helmholtzstraße 14, D-89081, Ulm, Germany
| | - Uwe Gbureck
- Department for Functional Materials in Medicine and Dentistry, University Hospital Würzburg, Pleicherwall 2, D-97070, Würzburg, Germany
| | - Anita Ignatius
- Institute for Orthopedic Research and Biomechanics, Ulm University Medical Center, Helmholtzstraße 14, D-89081, Ulm, Germany
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Biodegradable Cements for Bone Regeneration. J Funct Biomater 2023; 14:jfb14030134. [PMID: 36976058 PMCID: PMC10056236 DOI: 10.3390/jfb14030134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/21/2023] [Accepted: 02/24/2023] [Indexed: 03/08/2023] Open
Abstract
Bone cements such as polymethyl methacrylate and calcium phosphates have been widely used for the reconstruction of bone. Despite their remarkable clinical success, the low degradation rate of these materials hampers a broader clinical use. Matching the degradation rate of the materials with neo bone formation remains a challenge for bone-repairing materials. Moreover, questions such as the mechanism of degradation and how the composition of the materials contribute to the degradation property remain unanswered. Therefore, the review provides an overview of currently used biodegradable bone cements such as calcium phosphates (CaP), calcium sulfates and organic-inorganic composites. The possible degradation mechanism and clinical performance of the biodegradable cements are summarized. This paper reviews up-to-date research and applications of biodegradable cements, hoping to provide researchers in the field with inspirations and references.
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Shah FA, Jolic M, Micheletti C, Omar O, Norlindh B, Emanuelsson L, Engqvist H, Engstrand T, Palmquist A, Thomsen P. Bone without borders – Monetite-based calcium phosphate guides bone formation beyond the skeletal envelope. Bioact Mater 2023; 19:103-114. [PMID: 35441115 PMCID: PMC9005875 DOI: 10.1016/j.bioactmat.2022.03.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 03/02/2022] [Accepted: 03/07/2022] [Indexed: 12/18/2022] Open
Abstract
Calcium phosphates (CaP) represent an important class of osteoconductive and osteoinductive biomaterials. As proof-of-concept, we show how a multi-component CaP formulation (monetite, beta-tricalcium phosphate, and calcium pyrophosphate) guides osteogenesis beyond the physiological envelope. In a sheep model, hollow dome-shaped constructs were placed directly over the occipital bone. At 12 months, large amounts of bone (∼75%) occupy the hollow space with strong evidence of ongoing remodelling. Features of both compact bone (osteonal/osteon-like arrangements) and spongy bone (trabeculae separated by marrow cavities) reveal insights into function/need-driven microstructural adaptation. Pores within the CaP also contain both woven bone and vascularised lamellar bone. Osteoclasts actively contribute to CaP degradation/removal. Of the constituent phases, only calcium pyrophosphate persists within osseous (cutting cones) and non-osseous (macrophages) sites. From a translational perspective, this multi-component CaP opens up exciting new avenues for osteotomy-free and minimally-invasive repair of large bone defects and augmentation of the dental alveolar ridge. Dome-shaped hollow multi-component calcium phosphate (CaP) constructs were fabricated. CaP is 85% monetite, 8% beta-tricalcium phosphate, and 7% calcium pyrophosphate. CaP degrades in vivo and remodelled bone occupies the available extraskeletal space. CaP loses monetite to form carbonated apatite; calcium pyrophosphate found in tissues. Extraskeletal bone micro-/nanostructure and composition comparable to the native bone.
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Biernat M, Szwed-Georgiou A, Rudnicka K, Płociński P, Pagacz J, Tymowicz-Grzyb P, Woźniak A, Włodarczyk M, Urbaniak MM, Krupa A, Rusek-Wala P, Karska N, Rodziewicz-Motowidło S. Dual Modification of Porous Ca-P/PLA Composites with APTES and Alendronate Improves Their Mechanical Strength and Cytobiocompatibility towards Human Osteoblasts. Int J Mol Sci 2022; 23:ijms232214315. [PMID: 36430791 PMCID: PMC9692370 DOI: 10.3390/ijms232214315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 11/14/2022] [Accepted: 11/16/2022] [Indexed: 11/19/2022] Open
Abstract
Synthetic implants are used to treat large bone defects that are often unable to regenerate, for example those caused by osteoporosis. It is necessary that the materials used to manufacture them are biocompatible and resorbable. Polymer-ceramic composites, such as those based on poly(L-lactide) (PLLA) and calcium phosphate ceramics (Ca-P), are often used for these purposes. In this study, we attempted to investigate an innovative strategy for two-step (dual) modification of composites and their components to improve the compatibility of composite components and the adhesion between PLA and Ca-P whiskers, and to increase the mechanical strength of the composite, as well as improve osteological bioactivity and prevent bone resorption in composites intended for bone regeneration. In the first step, Ca-P whiskers were modified with a saturated fatty acid namely, lauric acid (LA), or a silane coupling agent γ-aminopropyltriethoxysilane (APTES). Then, the composite, characterized by the best mechanical properties, was modified in the second stage of the work with an active chemical compound used in medicine as a first-line drug in osteoporosis-sodium alendronate, belonging to the group of bisphosphonates (BP). As a result of the research covered in this work, the composite modified with APTES and alendronate was found to be a promising candidate for future biomedical engineering applications.
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Affiliation(s)
- Monika Biernat
- Biomaterials Research Group, Łukasiewicz Research Network-Institute of Ceramics and Building Materials, Center of Ceramic and Concrete in Warsaw, Cementowa 8, 31-983 Kraków, Poland
- Correspondence: (M.B.); (A.S.-G.)
| | - Aleksandra Szwed-Georgiou
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
- Correspondence: (M.B.); (A.S.-G.)
| | - Karolina Rudnicka
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
| | - Przemysław Płociński
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
| | - Joanna Pagacz
- Biomaterials Research Group, Łukasiewicz Research Network-Institute of Ceramics and Building Materials, Center of Ceramic and Concrete in Warsaw, Cementowa 8, 31-983 Kraków, Poland
| | - Paulina Tymowicz-Grzyb
- Biomaterials Research Group, Łukasiewicz Research Network-Institute of Ceramics and Building Materials, Center of Ceramic and Concrete in Warsaw, Cementowa 8, 31-983 Kraków, Poland
| | - Anna Woźniak
- Biomaterials Research Group, Łukasiewicz Research Network-Institute of Ceramics and Building Materials, Center of Ceramic and Concrete in Warsaw, Cementowa 8, 31-983 Kraków, Poland
| | - Marcin Włodarczyk
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
| | - Mateusz M. Urbaniak
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
- Bio-Med-Chem Doctoral School, University of Łódź and Łódź Institutes of the Polish Academy of Sciences, Banacha 12/16, 90-237 Łódź, Poland
| | - Agnieszka Krupa
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
| | - Paulina Rusek-Wala
- Department of Immunology and Infectious Biology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
- Bio-Med-Chem Doctoral School, University of Łódź and Łódź Institutes of the Polish Academy of Sciences, Banacha 12/16, 90-237 Łódź, Poland
| | - Natalia Karska
- Faculty of Chemistry, University of Gdańsk, Wita-Stwosza 63, 80-308 Gdańsk, Poland
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Stulajterova R, Giretova M, Medvecky L, Sopcak T, Luptakova L, Girman V. The Influence of Nanosilica on Properties of Cement Based on Tetracalcium Phosphate/Monetite Mixture with Addition of Magnesium Pyrophoshate. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8212. [PMID: 36431697 PMCID: PMC9692293 DOI: 10.3390/ma15228212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/04/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
The effect of nanosilica on the microstructure setting process of tetracalcium phosphate/nanomonetite calcium phosphate cement mixture (CPC) with the addition of 5 wt% of magnesium pyrophosphate (assigned as CT5MP) and osteogenic differentiation of mesenchymal stem cells cultured in cement extracts were studied. A more compact microstructure was observed in CT5MP cement with 0.5 wt% addition of nanosilica (CT5MP1Si) due to the synergistic effect of Mg2P2O7 particles, which strengthened the cement matrix and nanosilica, which supported gradual growth and recrystallization of HAP particles to form compact agglomerates. The addition of 0.5 wt% of nanosilica to CT5MP cement caused an increase in CS from 18 to 24 MPa while the setting time increased almost twofold. It was verified that adding nanosilica to CPC cement, even in a low amount (0.5 and 1 wt% of nanosilica), positively affected the injectability of cement pastes and differentiation of cells with upregulation of osteogenic markers in cells cultured in cement extracts. Results revealed appropriate properties of these types of cement for filling bone defects.
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Affiliation(s)
- Radoslava Stulajterova
- Division of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, Slovakia
| | - Maria Giretova
- Division of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, Slovakia
| | - Lubomir Medvecky
- Division of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, Slovakia
| | - Tibor Sopcak
- Division of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, Slovakia
| | - Lenka Luptakova
- Department of Biology and Physiology, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 041 81 Kosice, Slovakia
| | - Vladimir Girman
- Division of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, Slovakia
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8
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Milborne B, Murrell L, Cardillo-Zallo I, Titman J, Briggs L, Scotchford C, Thompson A, Layfield R, Ahmed I. Developing Porous Ortho- and Pyrophosphate-Containing Glass Microspheres; Structural and Cytocompatibility Characterisation. Bioengineering (Basel) 2022; 9:611. [PMID: 36354522 PMCID: PMC9687370 DOI: 10.3390/bioengineering9110611] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/11/2022] [Accepted: 10/17/2022] [Indexed: 04/04/2024] Open
Abstract
Phosphate-based glasses (PBGs) are promising materials for bone repair and regeneration as they can be formulated to be compositionally similar to the inorganic components of bone. Alterations to the PBG formulation can be used to tailor their degradation rates and subsequent release of biotherapeutic ions to induce cellular responses, such as osteogenesis. In this work, novel invert-PBGs in the series xP2O5·(56 - x)CaO·24MgO·20Na2O (mol%), where x is 40, 35, 32.5 and 30 were formulated to contain pyro (Q1) and orthophosphate (Q0) species. These PBGs were processed into highly porous microspheres (PMS) via flame spheroidisation, with ~68% to 75% porosity levels. Compositional and structural analysis using EDX and 31P-MAS NMR revealed that significant depolymerisation occurred with reducing phosphate content which increased further when PBGs were processed into PMS. A decrease from 50% to 0% in Q2 species and an increase from 6% to 35% in Q0 species was observed for the PMS when the phosphate content decreased from 40 to 30 mol%. Ion release studies also revealed up to a four-fold decrease in cations and an eight-fold decrease in phosphate anions released with decreasing phosphate content. In vitro bioactivity studies revealed that the orthophosphate-rich PMS had favourable bioactivity responses after 28 days of immersion in simulated body fluid (SBF). Indirect and direct cell culture studies confirmed that the PMS were cytocompatible and supported cell growth and proliferation over 7 days of culture. The P30 PMS with ~65% pyro and ~35% ortho phosphate content revealed the most favourable properties and is suggested to be highly suitable for bone repair and regeneration, especially for orthobiologic applications owing to their highly porous morphology.
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Affiliation(s)
- Ben Milborne
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
| | - Lauren Murrell
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
| | | | - Jeremy Titman
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, UK
| | - Louise Briggs
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
| | - Colin Scotchford
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
| | - Alexander Thompson
- Biodiscovery Institute, Division of Cancer and Stem Cells, University of Nottingham, Nottingham NG7 2RD, UK
| | - Robert Layfield
- School of Life Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham NG7 2UH, UK
| | - Ifty Ahmed
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
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9
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Desbord M, Soulié J, Rey C, Combes C. Tunable Behavior in Solution of Amorphous Calcium Ortho/Pyrophosphate Materials: An Acellular In Vitro Study. ACS Biomater Sci Eng 2022; 8:2363-2374. [PMID: 35533345 DOI: 10.1021/acsbiomaterials.1c01618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Amorphous calcium phosphate-based materials are of major interest in the field of bone substitution. Very recently, the low-temperature synthesis of a new family of amorphous calcium phosphate containing both orthophosphate and pyrophosphate ions in controlled proportions has been reported. Despite their interest, especially due to the biochemical role and the hydrolysis of pyrophosphate occurring in vivo, the behavior of such materials when interacting with aqueous media has never been described. Consequently, we herein report the in vitro acellular evolution of three compositions of mixed calcium ortho- and pyrophosphate amorphous materials including a different orthophosphate proportion. As a first step to assess the physicochemical reactivity of these amorphous materials, they were tested in two different media at 37 °C, acidified water and simulated body fluid solution, from 1 h up to 15 days. The results demonstrated that they were quite stable and that they progressively released part of their constitutive ions, highlighting their potential for controlled delivery of bioactive ions (calcium, orthophosphate, and pyrophosphate ions). In addition to these properties, we showed that the material with the highest ortho/(ortho + pyro) phosphate ratio started to crystallize into nanocrystalline apatite analogous to bone mineral within 2 days or 2 weeks depending on the medium. For the other material compositions, no layer of apatite was detected at their surface with SBF testing despite the favorable supersaturation indexes, crystallization being probably inhibited by pyrophosphate ions released in the medium. This varying apatite-forming ability emphasizes the key role of the ortho/(ortho + pyro) phosphate ratio of these materials in their in vitro reactivity and bioactivity, which paves the way for the development of this promising family of amorphous calcium phosphate materials with tunable physicochemical and biological properties.
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Affiliation(s)
- Maximilien Desbord
- CIRIMAT, Université de Toulouse, CNRS, Toulouse INP- ENSIACET, 4 allée Emile Monso, 31030 Toulouse cedex 4, France
| | - Jérémy Soulié
- CIRIMAT, Université de Toulouse, CNRS, Toulouse INP- ENSIACET, 4 allée Emile Monso, 31030 Toulouse cedex 4, France
| | - Christian Rey
- CIRIMAT, Université de Toulouse, CNRS, Toulouse INP- ENSIACET, 4 allée Emile Monso, 31030 Toulouse cedex 4, France
| | - Christèle Combes
- CIRIMAT, Université de Toulouse, CNRS, Toulouse INP- ENSIACET, 4 allée Emile Monso, 31030 Toulouse cedex 4, France
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10
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Le Gars Santoni B, Niggli L, Dolder S, Loeffel O, Sblendorio G, Heuberger R, Maazouz Y, Stähli C, Döbelin N, Bowen P, Hofstetter W, Bohner M. Effect of minor amounts of β-calcium pyrophosphate and hydroxyapatite on the physico-chemical properties and osteoclastic resorption of β-tricalcium phosphate cylinders. Bioact Mater 2022; 10:222-235. [PMID: 34901541 PMCID: PMC8636826 DOI: 10.1016/j.bioactmat.2021.09.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 09/02/2021] [Accepted: 09/02/2021] [Indexed: 01/21/2023] Open
Abstract
β-Tricalcium Phosphate (β-TCP), one of the most used bone graft substitutes, may contain up to 5 wt% foreign phase according to standards. Typical foreign phases include β-calcium pyrophosphate (β-CPP) and hydroxyapatite (HA). Currently, the effect of small amounts of impurities on β-TCP resorption is unknown. This is surprising since pyrophosphate is a very potent osteoclast inhibitor. The main aim of this study was to assess the effect of small β-CPP fractions (<1 wt%) on the in vitro osteoclastic resorption of β-TCP. A minor aim was to examine the effect of β-CPP and HA impurities on the physico-chemical properties of β-TCP powders and sintered cylinders. Twenty-six batches of β-TCP powder were produced with a Ca/P molar ratio varying between 1.440 and 1.550. Fifteen were further processed to obtain dense and polished β-TCP cylinders. Finally, six of them, with a Ca/P molar ratio varying between 1.496 (1 wt% β-CPP) and 1.502 (1 wt% HA), were incubated in the presence of osteoclasts. Resorption was quantified by white-light interferometry. Osteoclastic resorption was significantly inhibited by β-CPP fraction in a linear manner. The presence of 1% β-CPP reduced β-TCP resorption by 40%, which underlines the importance of controlling β-CPP content when assessing β-TCP biological performance.
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Affiliation(s)
- B. Le Gars Santoni
- RMS Foundation, Bioceramics and Biocompatibility Group, Bischmattstrasse 12, CH-2544, Bettlach, Switzerland
- University of Bern, Graduate School for Cellular and Biomedical Sciences, Mittelstrasse 43, CH-3012, Bern, Switzerland
| | - L. Niggli
- RMS Foundation, Bioceramics and Biocompatibility Group, Bischmattstrasse 12, CH-2544, Bettlach, Switzerland
| | - S. Dolder
- University of Bern, Department for BioMedical Research (DBMR), Murtenstrasse 35, CH-3008, Bern, Switzerland
| | - O. Loeffel
- RMS Foundation, Materials Group, Bischmattstrasse 12, CH-2544, Bettlach, Switzerland
| | - G.A. Sblendorio
- EPFL, Ecole Polytechnique Fédérale de Lausanne, Construction Materials Laboratory, Station 12, CH-1015, Lausanne, Switzerland
| | - R. Heuberger
- RMS Foundation, Materials Group, Bischmattstrasse 12, CH-2544, Bettlach, Switzerland
| | - Y. Maazouz
- RMS Foundation, Bioceramics and Biocompatibility Group, Bischmattstrasse 12, CH-2544, Bettlach, Switzerland
| | - C. Stähli
- RMS Foundation, Bioceramics and Biocompatibility Group, Bischmattstrasse 12, CH-2544, Bettlach, Switzerland
| | - N. Döbelin
- RMS Foundation, Bioceramics and Biocompatibility Group, Bischmattstrasse 12, CH-2544, Bettlach, Switzerland
| | - P. Bowen
- EPFL, Ecole Polytechnique Fédérale de Lausanne, Construction Materials Laboratory, Station 12, CH-1015, Lausanne, Switzerland
| | - W. Hofstetter
- University of Bern, Department for BioMedical Research (DBMR), Murtenstrasse 35, CH-3008, Bern, Switzerland
| | - M. Bohner
- RMS Foundation, Bioceramics and Biocompatibility Group, Bischmattstrasse 12, CH-2544, Bettlach, Switzerland
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11
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Stulajterova R, Medvecky L, Giretova M, Sopcak T, Luptakova L, Bures R, Szekiova E. Characterization of Tetracalcium Phosphate/Monetite Biocement Modified by Magnesium Pyrophosphate. MATERIALS 2022; 15:ma15072586. [PMID: 35407918 PMCID: PMC9000233 DOI: 10.3390/ma15072586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 03/23/2022] [Accepted: 03/25/2022] [Indexed: 11/24/2022]
Abstract
Magnesium pyrophosphate modified tetracalcium phosphate/monetite cement mixtures (MgTTCPM) were prepared by simple mechanical homogenization of compounds in a ball mill. The MgP2O7 was chosen due to the suitable setting properties of the final cements, in contrast to cements with the addition of amorphous (Ca, Mg) CO3 or newberite, which significantly extended the setting time even in small amounts (corresponding ~to 1 wt% of Mg in final cements). The results showed the gradual dissolution of the same amount of Mg2P2O7 phase, regardless of its content in the cement mixtures, and the refinement of formed HAP nanoparticles, which were joined into weakly and mutually bound spherical agglomerates. The compressive strength of composite cements was reduced to 14 MPa and the setting time was 5–10 min depending on the composition. Cytotoxicity of cements or their extracts was not detected and increased proliferative activity of mesenchymal stem cells with upregulation of osteopontin and osteonectin genes was verified in cells cultured for 7 and 15 days in cement extracts. The above facts, including insignificant changes in the pH of simulated body fluid solution and mechanical strength close to cancellous bone, indicate that MgTTCPM cement mixtures could be suitable biomaterials for use in the treatment of bone defects.
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Affiliation(s)
- Radoslava Stulajterova
- Division of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, Slovakia; (R.S.); (M.G.); (T.S.); (R.B.)
| | - Lubomir Medvecky
- Division of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, Slovakia; (R.S.); (M.G.); (T.S.); (R.B.)
- Correspondence:
| | - Maria Giretova
- Division of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, Slovakia; (R.S.); (M.G.); (T.S.); (R.B.)
| | - Tibor Sopcak
- Division of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, Slovakia; (R.S.); (M.G.); (T.S.); (R.B.)
| | - Lenka Luptakova
- Department of Biology and Physiology, University of Veterinary Medicine and Pharmacy in Kosice, Komenskeho 73, 041 81 Kosice, Slovakia;
| | - Radovan Bures
- Division of Functional and Hybrid Systems, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, Slovakia; (R.S.); (M.G.); (T.S.); (R.B.)
| | - Eva Szekiova
- Institute of Neurobiology of Biomedical Research Center of SAS, Soltesovej 4–6, 040 01 Kosice, Slovakia;
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12
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Svensson S, Palmer M, Svensson J, Johansson A, Engqvist H, Omar O, Thomsen P. Monocytes and pyrophosphate promote mesenchymal stem cell viability and early osteogenic differentiation. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2022; 33:11. [PMID: 35032239 PMCID: PMC8761140 DOI: 10.1007/s10856-021-06639-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 12/18/2021] [Indexed: 06/14/2023]
Abstract
Pyrophosphate-containing calcium phosphate implants promote osteoinduction and bone regeneration. The role of pyrophosphate for inflammatory cell-mesenchymal stem cell (MSC) cross-talk during osteogenesis is not known. In the present work, the effects of lipopolysaccharide (LPS) and pyrophosphate (PPi) on primary human monocytes and on osteogenic gene expression in human adipose-derived MSCs were evaluated in vitro, using conditioned media transfer as well as direct effect systems. Direct exposure to pyrophosphate increased nonadherent monocyte survival (by 120% without LPS and 235% with LPS) and MSC viability (LDH) (by 16-19% with and without LPS). Conditioned media from LPS-primed monocytes significantly upregulated osteogenic genes (ALP and RUNX2) and downregulated adipogenic (PPAR-γ) and chondrogenic (SOX9) genes in recipient MSCs. Moreover, the inclusion of PPi (250 μM) resulted in a 1.2- to 2-fold significant downregulation of SOX9 in the recipient MSCs, irrespective of LPS stimulation or culture media type. These results indicate that conditioned media from LPS-stimulated inflammatory monocytes potentiates the early MSCs commitment towards the osteogenic lineage and that direct pyrophosphate exposure to MSCs can promote their viability and reduce their chondrogenic gene expression. These results are the first to show that pyrophosphate can act as a survival factor for both human MSCs and primary monocytes and can influence the early MSC gene expression. Graphical abstract.
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Affiliation(s)
- Sara Svensson
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Michael Palmer
- Department of Engineering Sciences, Applied Materials Science Section, Uppsala University, Uppsala, Sweden
| | - Johan Svensson
- Department of Statistics, Umeå School of Business, Economics and Statistics, Umeå University, Umeå, Sweden
| | - Anna Johansson
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Håkan Engqvist
- Department of Engineering Sciences, Applied Materials Science Section, Uppsala University, Uppsala, Sweden
| | - Omar Omar
- Department of Biomedical Dental Sciences, College of Dentistry, Imam Abdulrahman bin Faisal University, Dammam, Saudi Arabia
| | - Peter Thomsen
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
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13
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Merle M, Soulié J, Sassoye C, Roblin P, Rey C, Bonhomme C, Combes C. Pyrophosphate-stabilised amorphous calcium carbonate for bone substitution: toward a doping-dependent cluster-based model. CrystEngComm 2022. [DOI: 10.1039/d2ce00936f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Multiscale and multitool advanced characterisation of pyrophosphate-stabilised amorphous calcium carbonates allowed building a cluster-based model paving the way for tunable biomaterials.
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Affiliation(s)
- Marion Merle
- CIRIMAT, Université de Toulouse, CNRS, Toulouse INP – ENSIACET, 4 Allée Emile Monso, 31030 Toulouse Cedex 4, Toulouse, France
| | - Jérémy Soulié
- CIRIMAT, Université de Toulouse, CNRS, Toulouse INP – ENSIACET, 4 Allée Emile Monso, 31030 Toulouse Cedex 4, Toulouse, France
| | | | - Pierre Roblin
- LGC, Université de Toulouse, CNRS, 118 Route de Narbonne Bâtiment 2R1, Toulouse, France
| | - Christian Rey
- CIRIMAT, Université de Toulouse, CNRS, Toulouse INP – ENSIACET, 4 Allée Emile Monso, 31030 Toulouse Cedex 4, Toulouse, France
| | | | - Christèle Combes
- CIRIMAT, Université de Toulouse, CNRS, Toulouse INP – ENSIACET, 4 Allée Emile Monso, 31030 Toulouse Cedex 4, Toulouse, France
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14
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Kim JE, Park S, Lee WS, Han J, Lim JW, Jeong S, Lee MC, Yang WY, Seonwoo H, Kim BM, Choung YH, Jang KJ, Chung JH. Enhanced Osteogenesis of Dental Pulp Stem Cells In Vitro Induced by Chitosan-PEG-Incorporated Calcium Phosphate Cement. Polymers (Basel) 2021; 13:polym13142252. [PMID: 34301012 PMCID: PMC8309336 DOI: 10.3390/polym13142252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/05/2021] [Accepted: 07/05/2021] [Indexed: 11/17/2022] Open
Abstract
The use of bone graft materials is required for the treatment of bone defects damaged beyond the critical defect; therefore, injectable calcium phosphate cement (CPC) is actively used after surgery. The application of various polymers to improve injectability, mechanical strength, and biological function of injection-type CPC is encouraged. We previously developed a chitosan–PEG conjugate (CS/PEG) by a sulfur (VI) fluoride exchange reaction, and the resulting chitosan derivative showed high solubility at a neutral pH. We have demonstrated the CPC incorporated with a poly (ethylene glycol) (PEG)-grafted chitosan (CS/PEG) and developed CS/PEG CPC. The characterization of CS/PEG CPC was conducted using Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). The initial properties of CS/PEG CPCs, such as the pH, porosity, mechanical strength, zeta potential, and in vitro biocompatibility using the WST-1 assay, were also investigated. Moreover, osteocompatibility of CS/PEG CPCs was carried out via Alizarin Red S staining, immunocytochemistry, and Western blot analysis. CS/PEG CPC has enhanced mechanical strength compared to CPC, and the cohesion test also demonstrated in vivo stability. Furthermore, we determined whether CS/PEG CPC is a suitable candidate for promoting the osteogenic ability of Dental Pulp Stem Cells (DPSC). The elution of CS/PEG CPC entraps more calcium ion than CPC, as confirmed through the zeta potential test. Accordingly, the ion trapping effect of CS/PEG is considered to have played a role in promoting osteogenic differentiation of DPSCs. The results strongly suggested that CS/PEG could be used as suitable additives for improving osteogenic induction of bone substitute materials.
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Affiliation(s)
- Jae Eun Kim
- Department of Biosystems Engineering, Seoul National University, Seoul 08826, Korea; (J.E.K.); (J.H.)
| | - Sangbae Park
- Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Korea; (S.P.); (J.W.L.); (S.J.)
| | - Woong-Sup Lee
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Korea; (W.-S.L.); (B.M.K.)
| | - Jinsub Han
- Department of Biosystems Engineering, Seoul National University, Seoul 08826, Korea; (J.E.K.); (J.H.)
- BK21 Global Smart Farm Educational Research Center, Seoul National University, Seoul 08826, Korea
| | - Jae Woon Lim
- Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Korea; (S.P.); (J.W.L.); (S.J.)
| | - Seung Jeong
- Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, Seoul 08826, Korea; (S.P.); (J.W.L.); (S.J.)
| | - Myung Chul Lee
- Department of Brigham and Women’s Hospital, Division of Engineering in Medicine, Harvard Medical School, Cambridge, MA 02139, USA;
| | - Woo-Young Yang
- Dental Research Institute, Seoul National University, Seoul 08826, Korea;
| | - Hoon Seonwoo
- Department of Industrial Machinery Engineering, College of Life Sciences and Natural Resources, Sunchon National University, Suncheon 57922, Korea;
- Interdisciplinary Program in IT-Bio Convergence System, Sunchon National University, Suncheon 57922, Korea
| | - B. Moon Kim
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Korea; (W.-S.L.); (B.M.K.)
| | - Yun-Hoon Choung
- Department of Otolaryngology, Ajou University School of Medicine, Suwon 16499, Korea;
| | - Kyoung-Je Jang
- Division of Agro-System Engineering, College of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Korea
- Institute of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Korea
- Correspondence: (K.-J.J.); (J.H.C.); Tel.: +82-55-772-1898 (K.-J.J.); +82-2-880-4601 (J.H.C.)
| | - Jong Hoon Chung
- Department of Biosystems Engineering, Seoul National University, Seoul 08826, Korea; (J.E.K.); (J.H.)
- BK21 Global Smart Farm Educational Research Center, Seoul National University, Seoul 08826, Korea
- Global Smart Farm Convergence Major, Seoul National University, Seoul 08826, Korea
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
- Correspondence: (K.-J.J.); (J.H.C.); Tel.: +82-55-772-1898 (K.-J.J.); +82-2-880-4601 (J.H.C.)
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15
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Lewin S, Kihlström Burenstam Linder L, Birgersson U, Gallinetti S, Åberg J, Engqvist H, Persson C, Öhman-Mägi C. Monetite-based composite cranial implants demonstrate long-term clinical volumetric balance by concomitant bone formation and degradation. Acta Biomater 2021; 128:502-513. [PMID: 33857696 DOI: 10.1016/j.actbio.2021.04.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 04/01/2021] [Accepted: 04/07/2021] [Indexed: 01/14/2023]
Abstract
The use of calcium phosphates (CaPs) as synthetic bone substitutes should ideally result in a volumetric balance with concomitant bone formation and degradation. Clinical data on such properties is nevertheless lacking, especially for monetite-based CaPs. However, a monetite-based composite implant has recently shown promising cranial reconstructions, with both CaP degradation and bone formation. In this study, the volumetric change at the implant site was quantified longitudinally by clinical computed tomography (CT). The retrospective CT datasets had been acquired postoperatively (n = 10), in 1-year (n = 9) and 3-year (n = 5) follow-ups. In the 1-year follow-up, the total volumetric change at the implant site was -8 ± 8%. A volumetric increase (bone formation) was found in the implant-bone interface, and a volumetric decrease was observed in the central region (CaP degradation). In the subjects with 2- or 3-year follow-ups, the rate of volumetric decrease slowed down or plateaued. The reported degradation rate is lower than previous clinical studies on monetite, likely due to the presence of pyrophosphate in the monetite-based CaP-formulation. A 31-months retrieval specimen analysis demonstrated that parts of the CaP had been remodeled into bone. The CaP phase composition remained stable, with 6% transformation into hydroxyapatite. In conclusion, this study demonstrates successful bone-bonding between the CaP-material and the recipient bone, as well as a long-term volumetric balance in cranial defects repaired with the monetite-based composite implant, which motivates further clinical use. The developed methods could be used in future studies for correlating spatiotemporal information regarding bone regeneration and CaP degradation to e.g. patient demographics. STATEMENT OF SIGNIFICANCE: In bone defect reconstructions, the use of calcium phosphate (CaP) bioceramics ideally results in a volumetric balance between bone formation and CaP degradation. Clinical data on the volumetric balance is nevertheless lacking, especially for monetite-based CaPs. Here, this concept is investigated for a composite cranial implant. The implant volumes were quantified from clinical CT-data: postoperatively, one year and three years postoperatively. In total, -8 ± 8% (n = 9) volumetric change was observed after one year. But the change plateaued, with only 2% additional decrease at the 3-year follow-up (n = 5), indicating a lower CaP degradation rate. Osseointegration was seen at the bone-implant interface, with a 9 ± 7% volumetric change after one year. This study presented the first quantitative spatiotemporal CT analysis of monetite-based CaPs.
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Affiliation(s)
- Susanne Lewin
- Department of Materials Science and Engineering, Uppsala University, Uppsala, Sweden.
| | - Lars Kihlström Burenstam Linder
- Department of Neurosurgery, Clinical Neurosciences, Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden
| | - Ulrik Birgersson
- Department of Neurosurgery, Clinical Neurosciences, Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden; Department of Clinical Science, Intervention and Technology, Division of Imaging and Technology, Karolinska Institutet, Huddinge, Sweden; OssDsign, Uppsala, Sweden
| | - Sara Gallinetti
- Department of Materials Science and Engineering, Uppsala University, Uppsala, Sweden; OssDsign, Uppsala, Sweden
| | - Jonas Åberg
- Department of Materials Science and Engineering, Uppsala University, Uppsala, Sweden; OssDsign, Uppsala, Sweden
| | - Håkan Engqvist
- Department of Materials Science and Engineering, Uppsala University, Uppsala, Sweden
| | - Cecilia Persson
- Department of Materials Science and Engineering, Uppsala University, Uppsala, Sweden
| | - Caroline Öhman-Mägi
- Department of Materials Science and Engineering, Uppsala University, Uppsala, Sweden
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16
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Barua R, Daly-Seiler CS, Chenreghanianzabi Y, Markel D, Li Y, Zhou M, Ren W. Comparing the physicochemical properties of dicalcium phosphate dihydrate (DCPD) and polymeric DCPD (P-DCPD) cement particles. J Biomed Mater Res B Appl Biomater 2021; 109:1644-1655. [PMID: 33655715 DOI: 10.1002/jbm.b.34822] [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: 08/13/2020] [Revised: 01/29/2021] [Accepted: 02/14/2021] [Indexed: 12/24/2022]
Abstract
We developed a new and injectable poly-dicalcium phosphate dihydrate (P-DCPD) forming cement. The key structural difference between P-DCPD and classical DCPD is that P-DCPD is composed of interconnected P-DCPD crystals by interlocking to the polyphosphate chains. In contrast, DCPD is composed of a package of DCPD crystals with weak mutual ionic bonding. The purpose of this continuing study was to compare the physicochemical properties between P-DCPD and DCPD cement particles. Data collected from SEM, X-ray diffraction, and Raman Spectroscopy approaches demonstrated that P-DCPD has a more stable chemical structure than DCPD as evidenced by much less transformation to hydroxyapatite (HA) during setting. Nanoindentation showed a similar hardness while the elastic modulus of P-DCPD is much lower than DCPD that might be due to the much less HA transformation of P-DCPD. P-DCPD has much lower zeta potential and less hydrophilicity than DCPD because of its entangled and interconnected polyphosphate chains. It is expected that superhydrophilic DCPD undergoes faster dissolution than P-DCPD in an aqueous environment. Another interesting finding is that the pH of eluent from P-DCPD is more neutral (6.6-7.1) than DCPD (5.5-6.5). More extensive experiments are currently underway to further evaluate the potential impacts of the different physiochemical performance observed of P-DCPD and DCPD cement particles on the biocompatibility, degradation behavior and bone defect healing efficacy both in vivo and in vitro.
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Affiliation(s)
- Rajib Barua
- Department of Biomedical Engineering, Wayne State University, Detroit, Michigan, USA
| | - Conor S Daly-Seiler
- Department of Biomedical Engineering, Wayne State University, Detroit, Michigan, USA
| | | | - David Markel
- Department of Orthopaedics, Providence Hospital, Southfield, Michigan, USA
| | - Yawen Li
- Department of Biomedical Engineering, Lawrence Technological University, Southfield, Michigan, USA
| | - Meng Zhou
- Department of Natural Sciences, Lawrence Technological University, Southfield, Michigan, USA
| | - Weiping Ren
- Department of Biomedical Engineering, Wayne State University, Detroit, Michigan, USA
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17
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Alimov U, Zhao K, Hu J, Guo Y, Meng L, Pan X, Deng T. Volumetric properties of disodium dihydrogen pyrophosphate aqueous solution from 283.15 to 363.15 K at 101.325 kPa. Food Chem 2021; 352:129410. [PMID: 33677210 DOI: 10.1016/j.foodchem.2021.129410] [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: 02/11/2020] [Revised: 01/31/2021] [Accepted: 02/16/2021] [Indexed: 10/22/2022]
Abstract
The purpose of this exploration was to determine the density and volumetric properties of the aqueous solution of Na2H2P2O7 with the molality varied from 0.08706 to 0.88402 mol·kg-1 measured at temperature intervals of 5 K from 283.15 to 363.15 K at 101.325 kPa using Anton Paar Digital vibrating-tube densimeter. The thermal expansion coefficient (α), apparent molar volume (VΦ), expansibility (ϕE), and partial molar volume (VB) of Na2H2P2O7 (aq) against temperature and molality have been evaluated from density data. On the basis of Pitzer ion-interaction apparent molar volume theory, the Pitzer single-salt parameters (βM,X0v, βM,X1v, βM,X2v and CM,Xv, MX = Na2H2P2O7), and their correlation coefficients ai of the temperature-dependence formula f (i, p, T) = a1 + a2ln(T/298.15) + a3(T - 298.15) + a4/(620 - T) + a5/(T - 227) for Na2H2P2O7 were obtained for the first time. It was revealed that predicted apparent molar volumes agreed well with the experimental values indicating the single salt parameters and the temperature-dependent formula are reliable.
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Affiliation(s)
- Umarbek Alimov
- State Key Laboratory of Food Safety and Nutrition, Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, PR China; Institute of General and Inorganic Chemistry, Academy of Sciences of the Republic of Uzbekistan, 77, Mirzo Ulugbek, Tashkent 100170, Uzbekistan
| | - Kaiyu Zhao
- State Key Laboratory of Food Safety and Nutrition, Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Jiayin Hu
- State Key Laboratory of Food Safety and Nutrition, Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Yafei Guo
- State Key Laboratory of Food Safety and Nutrition, Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, PR China.
| | - Lingzong Meng
- School of Chemistry Engineering, Linyi University, Linyi 276000, PR China
| | - Xiuyun Pan
- Hubei Yixin Salt Industry Technology Research Institute Co. LTD, Xiaogan 432400, PR China
| | - Tianlong Deng
- State Key Laboratory of Food Safety and Nutrition, Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, PR China.
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18
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Hughes EAB, Jones‐Salkey O, Forey P, Chipara M, Grover LM. Exploring the Formation of Calcium Orthophosphate‐Pyrophosphate Chemical Gardens. CHEMSYSTEMSCHEM 2021. [DOI: 10.1002/syst.202000062] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Erik A. B. Hughes
- School of Chemical Engineering University of Birmingham Birmingham B15 2TT UK
- NIHR Surgical Reconstruction and Microbiology Research Centre Queen Elizabeth Hospital Birmingham UK
| | - Owen Jones‐Salkey
- School of Chemical Engineering University of Birmingham Birmingham B15 2TT UK
| | - Prescillia Forey
- Ensaia Université De Lorraine 34 Cours Léopold, CS 25233 F-54052 Nancy France
| | - Miruna Chipara
- School of Chemical Engineering University of Birmingham Birmingham B15 2TT UK
| | - Liam M. Grover
- School of Chemical Engineering University of Birmingham Birmingham B15 2TT UK
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19
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Gu Y, Xie X, Zhuang R, Weir MD, Oates TW, Bai Y, Zhao L, Xu HHK. A Biphasic Calcium Phosphate Cement Enhances Dentin Regeneration by Dental Pulp Stem Cells and Promotes Macrophages M2 Phenotype In Vitro. Tissue Eng Part A 2021; 27:1113-1127. [PMID: 33261521 DOI: 10.1089/ten.tea.2020.0257] [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: 01/04/2023] Open
Abstract
Calcium phosphate cement (CPC) is promising for bone and dentin repair and regeneration. However, there has been no report of biphasic CPC for inducing dentin regeneration. The aim of this study was to develop a novel biphasic CPC containing β-tricalcium phosphate (β-TCP), and investigate its effects on odontogenic differentiation of human dental pulp stem cells (hDPSCs) and macrophage polarization. New biphasic CPC was formulated with different ratios of β-TCP to an equimolar mixture of tetracalcium phosphate and dicalcium phosphate anhydrous. Mechanical properties, biocompatibility, and odontogenic differentiation induction ability of the cements and the inflammatory reaction to the cements were examined. A series of CPC containing β-TCP were developed. CPC with 20% β-TCP exhibited homogeneity and injectability, an acceptable setting time, and a twofold increase in compressive strength. Significant increases in hDPSCs' alkaline phosphatase activity, mineral deposit, DMP1 and DSPP gene, and protein expressions were obtained for 20% TCP-CPC, compared with traditional CPC (p < 0.01). The addition of β-TCP did not promote macrophage polarization to the proinflammation phenotype. The addition of 10% and 20% β-TCP promoted macrophage polarization to the anti-inflammatory phenotype. In conclusion, a biphasic β-TCP-modified CPC was developed for the first time, demonstrating substantially increased dentin regeneration capability, while promoting macrophages to an anti-inflammation phenotype. The novel biphasic CPC is promising for tooth tissue engineering and dentin regeneration applications.
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Affiliation(s)
- Yingzhi Gu
- Department of Orthodontics and Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Xianju Xie
- Department of Orthodontics and Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Rui Zhuang
- Department of Oral and Maxillofacial Surgery, Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Michael D Weir
- Biomaterials & Tissue Engineering Division, Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, Maryland, USA
| | - Thomas W Oates
- Biomaterials & Tissue Engineering Division, Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, Maryland, USA
| | - Yuxing Bai
- Department of Orthodontics and Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Liang Zhao
- Biomaterials & Tissue Engineering Division, Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, Maryland, USA.,Department of Orthopedic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hockin H K Xu
- Biomaterials & Tissue Engineering Division, Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, Maryland, USA.,Center for Stem Cell Biology & Regenerative Medicine and University of Maryland School of Medicine, Baltimore, Maryland, USA.,Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, Maryland, USA
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20
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De Melo N, Murrell L, Islam MT, Titman JJ, Macri-Pellizzeri L, Ahmed I, Sottile V. Tailoring Pyro-and Orthophosphate Species to Enhance Stem Cell Adhesion to Phosphate Glasses. Int J Mol Sci 2021; 22:ijms22020837. [PMID: 33467686 PMCID: PMC7829838 DOI: 10.3390/ijms22020837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/11/2021] [Accepted: 01/13/2021] [Indexed: 12/29/2022] Open
Abstract
Phosphate-based glasses (PBGs) offer significant therapeutic potential due to their bioactivity, controllable compositions, and degradation rates. Several PBGs have already demonstrated their ability to support direct cell growth and in vivo cytocompatibility for bone repair applications. This study investigated development of PBG formulations with pyro- and orthophosphate species within the glass system (40 − x)P2O5·(16 + x)CaO·20Na2O·24MgO (x = 0, 5, 10 mol%) and their effect on stem cell adhesion properties. Substitution of phosphate for calcium revealed a gradual transition within the glass structure from Q2 to Q0 phosphate species. Human mesenchymal stem cells were cultured directly onto discs made from three PBG compositions. Analysis of cells seeded onto the discs revealed that PBG with higher concentration of pyro- and orthophosphate content (61% Q1 and 39% Q0) supported a 4.3-fold increase in adhered cells compared to glasses with metaphosphate connectivity (49% Q2 and 51% Q1). This study highlights that tuning the composition of PBGs to possess pyro- and orthophosphate species only, enables the possibility to control cell adhesion performance. PBGs with superior cell adhesion profiles represent ideal candidates for biomedical applications, where cell recruitment and support for tissue ingrowth are of critical importance for orthopaedic interventions.
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Affiliation(s)
- Nigel De Melo
- School of Medicine, University of Nottingham, Nottingham NG7 2RD, UK; (N.D.M.); (L.M.-P.)
| | - Lauren Murrell
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK; (L.M.); (M.T.I.)
| | - Md Towhidul Islam
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK; (L.M.); (M.T.I.)
- Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
| | - Jeremy J. Titman
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, UK;
| | - Laura Macri-Pellizzeri
- School of Medicine, University of Nottingham, Nottingham NG7 2RD, UK; (N.D.M.); (L.M.-P.)
| | - Ifty Ahmed
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK; (L.M.); (M.T.I.)
- Correspondence: (I.A.); (V.S.)
| | - Virginie Sottile
- School of Medicine, University of Nottingham, Nottingham NG7 2RD, UK; (N.D.M.); (L.M.-P.)
- Department of Molecular Medicine, The University of Pavia, 27100 Pavia, Italy
- Correspondence: (I.A.); (V.S.)
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21
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Schröter L, Kaiser F, Stein S, Gbureck U, Ignatius A. Biological and mechanical performance and degradation characteristics of calcium phosphate cements in large animals and humans. Acta Biomater 2020; 117:1-20. [PMID: 32979583 DOI: 10.1016/j.actbio.2020.09.031] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/21/2020] [Accepted: 09/15/2020] [Indexed: 12/11/2022]
Abstract
Calcium phosphate cements (CPCs) have been used to treat bone defects and support bone regeneration because of their good biocompatibility and osteointegrative behavior. Since their introduction in the 1980s, remarkable clinical success has been achieved with these biomaterials, because they offer the unique feature of being moldable and even injectable into implant sites, where they harden through a low-temperature setting reaction. However, despite decades of research efforts, two major limitations concerning their biological and mechanical performance hamper a broader clinical use. Firstly, achieving a degradation rate that is well adjusted to the dynamics of bone formation remains a challenging issue. While apatite-forming CPCs frequently remain for years at the implant site without major signs of degradation, brushite-forming CPCs are considered to degrade to a greater extent. However, the latter tend to convert into lower soluble phases under physiological conditions, which makes their degradation behavior rather unpredictable. Secondly, CPCs exhibit insufficient mechanical properties for load bearing applications because of their inherent brittleness. This review places an emphasis on these limitations and provides an overview of studies that have investigated the biological and biomechanical performance as well as the degradation characteristics of different CPCs after implantation into trabecular bone. We reviewed studies performed in large animals, because they mimic human bone physiology more closely in terms of bone metabolism and mechanical loading conditions compared with small laboratory animals. We compared the results of these studies with clinical trials that have dealt with the degradation behavior of CPCs after vertebroplasty and kyphoplasty.
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Affiliation(s)
- Lena Schröter
- Institute for Orthopedic Research and Biomechanics, Ulm University Medical Center, Helmholtzstrasse 14, D-89081 Ulm, Germany
| | - Friederike Kaiser
- Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, D-97070 Würzburg, Germany
| | - Svenja Stein
- Institute for Orthopedic Research and Biomechanics, Ulm University Medical Center, Helmholtzstrasse 14, D-89081 Ulm, Germany
| | - Uwe Gbureck
- Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, D-97070 Würzburg, Germany.
| | - Anita Ignatius
- Institute for Orthopedic Research and Biomechanics, Ulm University Medical Center, Helmholtzstrasse 14, D-89081 Ulm, Germany
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22
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Mayen L, Jensen ND, Laurencin D, Marsan O, Bonhomme C, Gervais C, Smith ME, Coelho C, Laurent G, Trebosc J, Gan Z, Chen K, Rey C, Combes C, Soulié J. A soft-chemistry approach to the synthesis of amorphous calcium ortho/pyrophosphate biomaterials of tunable composition. Acta Biomater 2020; 103:333-345. [PMID: 31881314 DOI: 10.1016/j.actbio.2019.12.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 12/15/2019] [Accepted: 12/19/2019] [Indexed: 12/27/2022]
Abstract
The development of amorphous phosphate-based materials is of major interest in the field of biomaterials science, and especially for bone substitution applications. In this context, we herein report the synthesis of gel-derived hydrated amorphous calcium/sodium ortho/pyrophosphate materials at ambient temperature and in water. For the first time, such materials have been obtained in a large range of tunable orthophosphate/pyrophosphate molar ratios. Multi-scale characterization was carried out thanks to various techniques, including advanced multinuclear solid state NMR. It allowed the quantification of each ionic/molecular species leading to a general formula for these materials: [(Ca2+y Na+z H+3+x-2y-z)(PO43-)1-x(P2O74-)x](H2O)u. Beyond this formula, the analyses suggest that these amorphous solids are formed by the aggregation of colloids and that surface water and sodium could play a role in the cohesion of the whole material. Although the full comprehension of mechanisms of formation and structure is still to be investigated in detail, the straightforward synthesis of these new amorphous materials opens up many perspectives in the field of materials for bone substitution and regeneration. STATEMENT OF SIGNIFICANCE: The metastability of amorphous phosphate-based materials with various chain length often improves their (bio)chemical reactivity. However, the control of the ratio of the different phosphate entities has not been yet described especially for small ions (pyrophosphate/orthophosphate) and using soft chemistry, whereas it opens the way for the tuning of enzyme- and/or pH-driven degradation and biological properties. Our study focuses on elaboration of amorphous gel-derived hydrated calcium/sodium ortho/pyrophosphate solids at 70 °C with a large range of orthophosphate/pyrophosphate ratios. Multi-scale characterization was carried out using various techniques such as advanced multinuclear SSNMR (31P, 23Na, 1H, 43Ca). Analyses suggest that these solids are formed by colloids aggregation and that the location of mobile water and sodium could play a role in the material cohesion.
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Affiliation(s)
- Laëtitia Mayen
- CIRIMAT, Université de Toulouse, CNRS, INPT-ENSIACET, Toulouse, France
| | - Nicholai D Jensen
- ICGM, CNRS-UM-ENSCM, Université de Montpellier, Montpellier, France; Sorbonne Université, CNRS, LCMCP, Paris, France
| | | | - Olivier Marsan
- CIRIMAT, Université de Toulouse, CNRS, INPT-ENSIACET, Toulouse, France
| | | | | | - Mark E Smith
- Department of Chemistry, Lancaster University, Lancaster, UK
| | | | | | - Julien Trebosc
- Université de Lille, UMR 8181, UCCS: Unit of Catalysis and Chemistry of Solids, Lille, France
| | - Zhehong Gan
- National High Magnetic Field Laboratory, Tallahassee, FL, USA
| | - Kuizhi Chen
- National High Magnetic Field Laboratory, Tallahassee, FL, USA
| | - Christian Rey
- CIRIMAT, Université de Toulouse, CNRS, INPT-ENSIACET, Toulouse, France
| | - Christèle Combes
- CIRIMAT, Université de Toulouse, CNRS, INPT-ENSIACET, Toulouse, France
| | - Jérémy Soulié
- CIRIMAT, Université de Toulouse, CNRS, INPT-ENSIACET, Toulouse, France.
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23
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Yu Y, Stevensson B, Pujari-Palmer M, Guo H, Engqvist H, Edén M. The Monetite Structure Probed by Advanced Solid-State NMR Experimentation at Fast Magic-Angle Spinning. Int J Mol Sci 2019; 20:ijms20246356. [PMID: 31861132 PMCID: PMC6940740 DOI: 10.3390/ijms20246356] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/10/2019] [Accepted: 12/12/2019] [Indexed: 01/29/2023] Open
Abstract
We present a solid-state nuclear magnetic resonance (NMR) spectroscopy study of the local 31P and 1H environments in monetite [CaHPO4; dicalcium phosphate anhydrous (DCPA)], as well as their relative spatial proximities. Each of the three 1H NMR peaks was unambiguously assigned to its respective crystallographically unique H site of monetite, while their pairwise spatial proximities were probed by homonuclear 1H–1H double quantum–single quantum NMR experimentation under fast magic-angle spinning (MAS) of 66 kHz. We also examined the relative 1H–31P proximities among the inequivalent {P1, P2} and {H1, H2, H3} sites in monetite; the corresponding shortest internuclear 1H–31P distances accorded well with those of a previous neutron diffraction study. The NMR results from the monetite phase were also contrasted with those observed from the monetite component present in a pyrophosphate-bearing calcium phosphate cement, demonstrating that while the latter represents a disordered form of monetite, it shares all essential local features of the monetite structure.
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Affiliation(s)
- Yang Yu
- Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden; (Y.Y.); (B.S.); (H.G.)
| | - Baltzar Stevensson
- Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden; (Y.Y.); (B.S.); (H.G.)
| | - Michael Pujari-Palmer
- Applied Material Science, Department of Engineering, Uppsala University, SE-751 21 Uppsala, Sweden; (M.P.-P.); (H.E.)
| | - Hua Guo
- Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden; (Y.Y.); (B.S.); (H.G.)
| | - Håkan Engqvist
- Applied Material Science, Department of Engineering, Uppsala University, SE-751 21 Uppsala, Sweden; (M.P.-P.); (H.E.)
| | - Mattias Edén
- Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden; (Y.Y.); (B.S.); (H.G.)
- Correspondence:
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24
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Silva AS, Santos LF, Mendes MC, Mano JF. Multi-layer pre-vascularized magnetic cell sheets for bone regeneration. Biomaterials 2019; 231:119664. [PMID: 31855623 DOI: 10.1016/j.biomaterials.2019.119664] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 11/27/2019] [Accepted: 12/01/2019] [Indexed: 12/14/2022]
Abstract
The lack of effective strategies to produce vascularized 3D bone transplants in vitro, hampers the development of thick-constructed bone, limiting the translational of lab-based engineered system to clinical practices. Cell sheet (CS) engineering techniques provide an excellent microenvironment for vascularization since the technique can maintain the intact cell matrix, crucial for angiogenesis. In an attempt to develop hierarchical vascularized 3D cellular constructs, we herein propose the construction of stratified magnetic responsive heterotypic CSs by making use of iron oxide nanoparticles previously internalized within cells. Magnetic force-based CS engineering allows for the construction of thick cellular multilayers. Results show that osteogenesis is achieved due to a synergic effect of human umbilical vein endothelial cells (HUVECs) and adipose-derived stromal cells (ASCs), even in the absence of osteogenic differentiating factors. Increased ALP activity, matrix mineralization, osteopontin and osteocalcin detection were achieved over a period of 21 days for the heterotypic CS conformation (ASCs/HUVECs/ASCs), over the homotypic one (ASCs/ASCs), corroborating our findings. Moreover, the validated crosstalk between BMP-2 and VEGF releases triggers not only the recruitment of blood vessels, as demonstrated in an in vivo CAM assay, as well as the osteogenesis of the 3D cell construct. The in vivo angiogenic profile also demonstrated preserved human vascular structures and human cells showed the ability to migrate and integrate within the chick vasculature.
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Affiliation(s)
- Ana S Silva
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193, Aveiro, Portugal.
| | - Lúcia F Santos
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Maria C Mendes
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193, Aveiro, Portugal
| | - João F Mano
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193, Aveiro, Portugal.
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25
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Salimi E. In-Situ Synthesis of a Novel Bioresorbable Sodium Alginate/Hydroxyapatite–Calcium Pyrophosphate Nanocomposite as Bone Replacement. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-019-01391-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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26
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Foroutan F, McGuire J, Gupta P, Nikolaou A, Kyffin BA, Kelly NL, Hanna JV, Gutierrez-Merino J, Knowles JC, Baek SY, Velliou E, Carta D. Antibacterial Copper-Doped Calcium Phosphate Glasses for Bone Tissue Regeneration. ACS Biomater Sci Eng 2019; 5:6054-6062. [DOI: 10.1021/acsbiomaterials.9b01291] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
| | | | | | | | | | - Nicole L. Kelly
- Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - John V. Hanna
- Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom
| | | | - Jonathan C. Knowles
- Division of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, 256 Gray’s Inn Road, London WC1X 8LD, United Kingdom
- The Discoveries Centre for Regenerative and Precision Medicine, University College London, London WC1E 6BT, United Kingdom
| | - Song-Yi Baek
- Division of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, 256 Gray’s Inn Road, London WC1X 8LD, United Kingdom
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27
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Wang Q, Zhao G, Xing Z, Zhan J, Ma J. Comparative evaluation of the osteogenic capacity of human mesenchymal stem cells from bone marrow and umbilical cord tissue. Exp Ther Med 2018; 17:764-772. [PMID: 30651861 DOI: 10.3892/etm.2018.6975] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 09/27/2018] [Indexed: 02/06/2023] Open
Abstract
Mesenchymal stem cells (MSCs) have been extensively investigated in the field of regenerative medicine. Human bone MSCs (BMSCs) have become a common type of seed cell for bone tissue engineering. However, the viability and cell number of BMSCs are negatively correlated with donor age, and as the extraction process is painful, this method has not been widely used. As human umbilical cord MSCs (UCMSCs) may be harvested inexpensively and inexhaustibly, the present study evaluated and compared the regenerative potential of UCMSCs and BMSCs to determine whether UCMSCs may be used as a novel cell type for bone regeneration. In the present study, the proliferation and osteogenic capacity of BMSCs and UCMSCs was compared in vitro. BMSCs and UCMSCs were respectively combined with biofunctionalized macroporous calcium phosphate cement, and their bone regenerative potentials were determined by investigating their capacity for ectopic bone formation in a nude mouse model as well as their efficacy in a rat model of tibia bone defect. The extent of bone regeneration was examined by X-ray, histological and immunohistochemical analyses. The results revealed that UCMSCs exhibited a good osteogenic differentiation potential, similarly to that of BMSCs, and that UCMSCs were able to contribute to the regeneration of bone and blood vessels. Furthermore, no significant differences were identified between BMSCs and UCMSCs in terms of their bone regenerative effect.
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Affiliation(s)
- Qian Wang
- Institute of Biomedical Science, Tianjin Kang Ting Biological Engineering Co., Ltd., Tianjin 300385, P.R. China
| | - Gang Zhao
- Institute of Biomedical Science, Tianjin Kang Ting Biological Engineering Co., Ltd., Tianjin 300385, P.R. China
| | - Zijun Xing
- Institute of Biomedical Science, Tianjin Kang Ting Biological Engineering Co., Ltd., Tianjin 300385, P.R. China
| | - Juming Zhan
- Institute of Biomedical Science, Tianjin Kang Ting Biological Engineering Co., Ltd., Tianjin 300385, P.R. China
| | - Jie Ma
- Institute of Biomedical Science, Tianjin Kang Ting Biological Engineering Co., Ltd., Tianjin 300385, P.R. China
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28
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Kihlström Burenstam Linder L, Birgersson U, Lundgren K, Illies C, Engstrand T. Patient-Specific Titanium-Reinforced Calcium Phosphate Implant for the Repair and Healing of Complex Cranial Defects. World Neurosurg 2018; 122:e399-e407. [PMID: 30342265 DOI: 10.1016/j.wneu.2018.10.061] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 10/08/2018] [Indexed: 10/28/2022]
Abstract
BACKGROUND The reconstruction of complex cranial defects is challenging and is associated with a high complication rate. The development of a patient-specific, titanium-reinforced, calcium phosphate-based (CaP-Ti) implant with bone regenerative properties has previously been described in 2 case studies with the hypothesis that the implant may improve clinical outcome. OBJECTIVE To identify whether the introduction of CaP-Ti implant has the potential to improve clinical outcome. METHODS A retrospective review of all patients having undergone CaP-Ti cranioplasty was conducted. Comprehensive clinical data were collected from the hospital computer database and patient records. Bone formation and osseointegration were analyzed in a single retrieval specimen. RESULTS Fifty patients, with 52 cranial defects, met the inclusion criteria. The patient cohort displayed a previous failure rate of 64% (32/50) with autologous bone, alloplastic materials, or both. At a median follow-up time of 25 months, the explantation rate due to either early postoperative infection or persistent wound dehiscence was 1.9% (1/53) or 3.8% (2/53), respectively. Surgical intervention with local wound revision was required in 2 patients without the need of implant removal. One patient had a brain tumor recurrence, and the implant was explanted 31 months after implantation. Histologic examination showed that the entire implant was partly yet evenly transformed into vascularized compact bone. CONCLUSION In the present study the CaP-Ti implant appears to have improved the clinical outcomes in a cohort of patients with a high rate of previous cranioplasty failures. The bone regenerative effect may in particular have an impact on the long-term success rate of the implant.
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Affiliation(s)
- Lars Kihlström Burenstam Linder
- Department of Neurosurgery, Clinical Neurosciences, Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden.
| | - Ulrik Birgersson
- Department of Clinical Science, Intervention and Technology, Division of Imaging and Technology, Karolinska Institutet, Huddinge, Sweden
| | - Kalle Lundgren
- Department of Molecular Medicine and Surgery, Unit for Craniofacial diseases, Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden
| | - Christopher Illies
- Department of Clinical Pathology, Karolinska University Hospital, Stockholm, Sweden
| | - Thomas Engstrand
- Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
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29
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Mastrogiacomo S, Kownacka AE, Dou W, Burke BP, Rosales RTM, Heerschap A, Jansen JA, Archibald SJ, Walboomers XF. Bisphosphonate Functionalized Gadolinium Oxide Nanoparticles Allow Long-Term MRI/CT Multimodal Imaging of Calcium Phosphate Bone Cement. Adv Healthc Mater 2018; 7:e1800202. [PMID: 30118580 DOI: 10.1002/adhm.201800202] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 05/22/2018] [Indexed: 12/13/2022]
Abstract
Direct in vivo monitoring of bioconstructs using noninvasive imaging modalities such as magnetic resonance imaging (MRI) or computed tomography (CT) is not possible for many materials. Calcium phosphate-based composites (CPCs) that are applicable to bone regeneration are an example where the materials have poor MRI and CT contrast; hence, they are challenging to detect in vivo. In this study, a CPC construct is designed with gadolinium-oxide nanoparticles incorporated to act as an MRI/CT multimodal contrast agent. The gadolinium(III) oxide nanoparticles are synthesized via the polyol method and surface functionalized with a bisphosphonate (BP) derivative to give a construct (gadolinium-based contrast agents (GBCAs)-BP) with strong affinity toward calcium phosphate. The CPC-GBCAs-BP functional material is longitudinally monitored after in vivo implantation in a condyle defect rat model. The synthetic method developed produces nanoparticles that are stable in aqueous solution (hydrodynamic diameter 70 nm) with significant T1 and T2 relaxivity demonstrated in both clinical 3 T and preclinical 11.7 T MRI systems. The combination of GBCAs-BP nanoparticles with CPC gives an injectable material with handling properties that are suitable for clinical applications. The BP functionalization prolongs the residence of the contrast agent within the CPC to allow long-term follow-up imaging studies. The useful contrast agent properties combined with biological compatibility indicate further investigation of the novel bone substitute hybrid material toward clinical application.
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Affiliation(s)
- Simone Mastrogiacomo
- Department of BiomaterialsRadboud University Medical Center P.O. Box 9101 6500 HB Nijmegen (309) The Netherlands
| | - Alicja E. Kownacka
- Department of ChemistryUniversity of Hull Cottingham Road HU6 7RX Hull UK
| | - Weiqiang Dou
- Department of Radiology and Nuclear MedicineRadboud University Medical Center Geert Grooteplein Zuid 10 6525 GA Nijmegen The Netherlands
- GE Healthcare MR Research China Beijing 100176 China
| | - Benjamin P. Burke
- Department of ChemistryUniversity of Hull Cottingham Road HU6 7RX Hull UK
| | - Rafael T. M. Rosales
- School of Biomedical Engineering & Imaging SciencesKing's College London London SE1 7EH UK
| | - Arend Heerschap
- Department of Radiology and Nuclear MedicineRadboud University Medical Center Geert Grooteplein Zuid 10 6525 GA Nijmegen The Netherlands
| | - John A. Jansen
- Department of BiomaterialsRadboud University Medical Center P.O. Box 9101 6500 HB Nijmegen (309) The Netherlands
| | | | - X. Frank Walboomers
- Department of BiomaterialsRadboud University Medical Center P.O. Box 9101 6500 HB Nijmegen (309) The Netherlands
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30
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Hasan A, Byambaa B, Morshed M, Cheikh MI, Shakoor RA, Mustafy T, Marei HE. Advances in osteobiologic materials for bone substitutes. J Tissue Eng Regen Med 2018; 12:1448-1468. [DOI: 10.1002/term.2677] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 02/04/2018] [Accepted: 04/12/2018] [Indexed: 01/03/2023]
Affiliation(s)
- Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering; Qatar University; Doha Qatar
| | - Batzaya Byambaa
- Center for Biomedical Engineering, Department of Medicine; Brigham and Women's Hospital, Harvard Medical School; Cambridge MA USA
- Harvard-MIT Division of Health Sciences and Technology; Massachusetts Institute of Technology; Cambridge MA USA
| | - Mahboob Morshed
- School of Life Sciences; Independent University, Bangladesh (IUB); Dhaka Bangladesh
| | - Mohammad Ibrahim Cheikh
- Department of Mechanical Engineering, Faculty of Engineering and Architecture; American University of Beirut; Beirut Lebanon
| | | | - Tanvir Mustafy
- Department of Mechanical Engineering; Ecole Polytechnique de Montreal; Quebec Canada
| | - Hany E. Marei
- Biomedical Research Center; Qatar University; Doha Qatar
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Trbakovic A, Hedenqvist P, Mellgren T, Ley C, Hilborn J, Ossipov D, Ekman S, Johansson CB, Jensen-Waern M, Thor A. A new synthetic granular calcium phosphate compound induces new bone in a sinus lift rabbit model. J Dent 2018; 70:31-39. [PMID: 29258851 DOI: 10.1016/j.jdent.2017.12.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 11/29/2017] [Accepted: 12/15/2017] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVES The aim of this study was to investigate if a synthetic granular calcium phosphate compound (CPC) and a composite bisphosphonate-linked hyaluronic acid-calcium phosphate hydrogel (HABP·CaP) induced similar or more amount of bone as bovine mineral in a modified sinus lift rabbit model. MATERIAL AND METHODS Eighteen adult male New Zeeland White rabbits, received randomly one of the two test materials on a random side of the face, and bovine mineral as control on the contralateral side. In a sinus lift, the sinus mucosa was elevated and a titanium mini-implant was placed in the alveolar bone. Augmentation material (CPC, HABP·CaP or bovine bone) was applied in the space around the implant. The rabbits were euthanized three months after surgery and qualitative and histomorphometric evaluation were conducted. Histomorphometric evaluation included three different regions of interest (ROIs) and the bone to implant contact on each installed implant. RESULTS Qualitative assessment (p = <.05), histomorphometric evaluations (p = < .01), and implant incorporation (p = <.05) showed that CPC and bovine mineral induced similar amount of bone and more than the HABP·CaP hydrogel. CONCLUSION CPC induced similar amount of bone as bovine mineral and both materials induced more bone than HABP·CaP hydrogel. CLINICAL SIGNIFICANCE The CPC is suggested as a synthetic alternative for augmentations in the maxillofacial area.
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Affiliation(s)
- Amela Trbakovic
- Department of Surgical Sciences, Plastic & Oral and Maxillofacial Surgery, Uppsala University, 751 85 Uppsala, Sweden.
| | - Patricia Hedenqvist
- Swedish University of Agricultural Sciences, Department of Clinical Sciences, PO Box 7054, 750 07 Uppsala, Sweden.
| | - Torbjörn Mellgren
- Polymer Chemistry, Department of Chemistry, Ångströms Laboratory, Uppsala University, Box 538, 75121 Uppsala, Sweden.
| | - Cecilia Ley
- Swedish University of Agricultural Sciences, Department of Biomedical Sciences and Veterinary Public Health, Division of Pathology, PO Box 7028, 750 07 Uppsala, Sweden.
| | - Jöns Hilborn
- Polymer Chemistry, Department of Chemistry, Ångströms Laboratory, Uppsala University, Box 538, 75121 Uppsala, Sweden.
| | - Dmitri Ossipov
- Polymer Chemistry, Department of Chemistry, Ångströms Laboratory, Uppsala University, Box 538, 75121 Uppsala, Sweden
| | - Stina Ekman
- Swedish University of Agricultural Sciences, Department of Biomedical Sciences and Veterinary Public Health, Division of Pathology, PO Box 7028, 750 07 Uppsala, Sweden.
| | - Carina B Johansson
- University of Gothenburg, The Sahlgrenska Academy, Institute of Odontology, Department of Prosthodontics, Dental Materials Science, P.O. Box 450, 405 30 Gothenburg, Sweden.
| | - Marianne Jensen-Waern
- Swedish University of Agricultural Sciences, Department of Clinical Sciences, PO Box 7054, 750 07 Uppsala, Sweden.
| | - Andreas Thor
- Department of Surgical Sciences, Plastic & Oral and Maxillofacial Surgery, Uppsala University, 751 85 Uppsala, Sweden.
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Self-Setting Calcium Orthophosphate (CaPO4) Formulations. SPRINGER SERIES IN BIOMATERIALS SCIENCE AND ENGINEERING 2018. [DOI: 10.1007/978-981-10-5975-9_2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Hughes EAB, Grover LM. Characterisation of a novel poly (ether ether ketone)/calcium sulphate composite for bone augmentation. Biomater Res 2017; 21:7. [PMID: 28529763 PMCID: PMC5437598 DOI: 10.1186/s40824-017-0093-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 05/10/2017] [Indexed: 11/16/2022] Open
Abstract
Background Calcium sulphate (CS) has been used in bone grafting since the 1800s. It has not replaced autograft as the gold standard, however, since its dissolution occurs rapidly in bodily fluids, meaning that the material cannot support long-term bone growth. Here, the polymer poly (ether ether ketone) (PEEK) was used to slow dissolution in in vitro physiological environments and augment the mechanical properties of the material. Methods PEEK/CS specimens were fabricated by combining powders of PEEK and CS with water, resulting in a hardening paste. To enhance physical interactions between phases, cylindrical specimens were heat-treated to melt and fuse the PEEK. Following analysis of physical and chemical interactions by SEM and FT-IR respectively, dynamic ageing in PBS and compression testing was undertaken to measure how the PEEK influenced the mechanical properties of the final parts. Changes in structure and chemistry were determined using helium pycnometry, SEM and analysis of powder XRD patterns. Results Powders of PEEK and CS hemihydrate (CSH) (CaSO4.0.5H2O) were combined with PEEK at 0 wt%, 2.5 wt%, 20 wt%, 40 wt% and 80 wt% and at a P:L ratio of 0.85 g/mL. The subsequently hardened structures were heat-treated, which initiated the melting of PEEK and dehydration of CSD (CaSO4.2H2O) to the CS anhydrite (CSA) (CaSO4) phase, which changed colour and apparent volume. FT-IR and SEM analysis revealed heat treatment of PEEK/CS specimens facilitated both physical and chemical interactions between phases. Over a period of 21 days of ageing in PBS, the hydration of CS was determined by XRD and improved specimen longevity at all levels of PEEK wt% loading was measured compared with the control. Importantly, increasing PEEK wt% loading resulted in a marked increase in the mechanical properties of PEEK/CS specimens in terms of both compressive strength and modulus. Conclusions Reinforcement of CS with PEEK significantly enhanced in vitro dissolution resistance, in addition to enhancing mechanical properties. This composite therefore has significant future potential as a bone graft replacement. Electronic supplementary material The online version of this article (doi:10.1186/s40824-017-0093-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Erik A B Hughes
- School of Chemical Engineering, University of Birmingham, Edgbaston, B15 2TT UK
| | - Liam M Grover
- School of Chemical Engineering, University of Birmingham, Edgbaston, B15 2TT UK
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Song Y, Zhang C, Wang P, Wang L, Bao C, Weir MD, Reynolds MA, Ren K, Zhao L, Xu HHK. Engineering bone regeneration with novel cell-laden hydrogel microfiber-injectable calcium phosphate scaffold. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:895-905. [PMID: 28415545 DOI: 10.1016/j.msec.2017.02.158] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 02/26/2017] [Accepted: 02/27/2017] [Indexed: 02/05/2023]
Abstract
Cell-based tissue engineering is promising to create living functional tissues for bone regeneration. The implanted cells should be evenly distributed in the scaffold, be fast-released to the defect and maintain high viability in order to actively participate in the regenerative process. Herein, we report an injectable calcium phosphate cement (CPC) scaffold containing cell-encapsulating hydrogel microfibers with desirable degradability that could deliver cells in a timely manner and maintain cell viability. Microfibers were synthesized using partially-oxidized alginate with various concentrations (0-0.8%) of fibrinogen to optimize the degradation rate of the alginate-fibrin microfibers (Alg-Fb MF). A fibrin concentration of 0.4% in Alg-Fb MF resulted in the greatest enhancement of cell migration, release and proliferation. Interestingly, a significant amount of cell-cell contact along the long-axis of the microfibers was established in Alg-0.4%Fb MF as early as day 2. The injectable tissue engineered construct for bone reconstruct was fabricated by mixing the fast-degradable Alg-0.4%Fb MF with CPC paste at 1:1 volume ratio. In vitro study showed that cells re-collected from the construct maintained good viability and osteogenic potentials. In vivo study demonstrated that the hBMSC-encapsulated CPC-MF tissue engineered construct displayed a robust capacity for bone regeneration. At 12weeks after implantation, osseous bridge in the rat mandibular defect was observed in CPC-MF-hBMSCs group with a new bone area fraction of (42.1±7.8) % in the defects, which was >3-fold that of the control group. The novel tissue-engineered construct presents an excellent prospect for a wide range of dental, craniofacial and orthopedic applications.
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Affiliation(s)
- Yang Song
- Department of Prosthodontics, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Chi Zhang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China; Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Ping Wang
- Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA.
| | - Lin Wang
- Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; VIP Integrated Department, School and Hospital of Stomatology, Jilin University, Changchun, Jilin 130011, China
| | - Chunyun Bao
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China; Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Michael D Weir
- Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Mark A Reynolds
- Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Ke Ren
- Department of Neural and Pain Sciences, School of Dentistry, Program in Neuroscience, University of Maryland, Baltimore, MD 21201, USA
| | - Liang Zhao
- Department of Endodontics, Periodontics and Prosthodontics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; Department of Orthopaedic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China.
| | - Hockin H K Xu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China; Center for Stem Cell Biology and Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA; University of Maryland Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
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35
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Tsai YF, Hsu LH, Wu CC, Cai WH, Yang KC, Fan FY. Long-Term Oral Toxicity and Anti-osteoporotic Effect of Sintered Dicalcium Pyrophosphate in Rat Model of Postmenopausal Osteoporosis. J Med Biol Eng 2017; 37:181-190. [PMID: 29930493 PMCID: PMC5990578 DOI: 10.1007/s40846-016-0197-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 04/07/2016] [Indexed: 11/29/2022]
Abstract
Sintered dicalcium pyrophosphate (SDCP), a synthetic pyrophosphate analog, has shown potential for the management of osteoporosis. The long-term oral toxicity and anti-osteoporotic effect of SDCP in a postmenopausal osteoporosis rat model were evaluated in this study. SDCP was orally administered to bilateral ovariectomized (OVX) Wistar rats at a dose of 0.75 mg/kg daily for 24 weeks following by 2 weeks of observation. There were no abnormal findings in clinical signs of toxicity, food consumption, body weight, blood examination, necropsy, and histological inspection attributable to the ingestion of SDCP. The serum level of type I collagen fragments, a bone resorption marker, decreased in SDCP-treated rats, and the bone formation markers alkaline phosphatase, osteocalcin, and osteopontin significantly decreased. These findings indicate that the bone turnover rate decreased in SDCP-treated animals. Relative to OVX rats, the increase in serum tartrate-resistant acid phosphatase 5b level represents an increase in bony tissues in the SDCP-treated rats. Histological examinations of distal femoral metaphyses further revealed that the ingestion of SDCP improved the trabecular bone architecture and decreased bone porosity. Analysis of limb bone ashes showed a significant increase in bone mineral content. Our results show that SDCP inhibits bone resorption to restore bone mass in OVX rats without deleterious effects, and therefore that SDCP has potential in the management of osteoporosis.
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Affiliation(s)
- Yuh-Feng Tsai
- 1Department of Diagnostic Radiology, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei City, 111 Taiwan.,2School of Medicine, Fu-Jen Catholic University, New Taipei City, 24205 Taiwan
| | - Li-Ho Hsu
- 3Department of Orthopedics, En Chu Kong Hospital, New Taipei City, 23702 Taiwan.,4Department of Orthopedics, College of Medicine, National Taiwan University Hospital, National Taiwan University, Taipei City, 10002 Taiwan
| | - Chang-Chin Wu
- 3Department of Orthopedics, En Chu Kong Hospital, New Taipei City, 23702 Taiwan.,4Department of Orthopedics, College of Medicine, National Taiwan University Hospital, National Taiwan University, Taipei City, 10002 Taiwan.,5Department of Biomedical Engineering, Yuanpei University of Medical Technology, Hsinchu, 30015 Taiwan
| | - Wei-Hua Cai
- 6School of Dental Technology, College of Oral Medicine, Taipei Medical University, 250 Wu-Hsing Street, Taipei City, 11031 Taiwan
| | - Kai-Chiang Yang
- 6School of Dental Technology, College of Oral Medicine, Taipei Medical University, 250 Wu-Hsing Street, Taipei City, 11031 Taiwan
| | - Fang-Yu Fan
- 6School of Dental Technology, College of Oral Medicine, Taipei Medical University, 250 Wu-Hsing Street, Taipei City, 11031 Taiwan
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Calcium phosphate nanoparticles functionalized with alendronate-conjugated polyethylene glycol (PEG) for the treatment of bone metastasis. Int J Pharm 2016; 516:352-363. [PMID: 27887884 DOI: 10.1016/j.ijpharm.2016.11.051] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 11/13/2016] [Accepted: 11/22/2016] [Indexed: 01/19/2023]
Abstract
Because of the peculiarity of the bone microstructure, the uptake of chemotherapeutics often happens at non-targeted sites, which induces side effects. In order to solve this problem, we designed a bone-targeting drug delivery system that can release drug exclusively in the nidus of the bone. Alendronate (ALN), which has a high ability to target to hydroxyapatite, was used to fabricate double ALN-conjugated poly (ethylene glycol) 2000 material (ALN-PEG2k-ALN). The ALN-PEG2k-ALN was characterized using 1H NMR and 31P NMR and FTIR. ALN-PEG2k-ALN-modified calcium phosphate nanoparticles (APA-CPNPs) with an ALN targeting moiety and hydrophilic poly (ethylene glycol) arms tiled on the surface was prepared for bone-targeted drug delivery. The distribution of ALN-PEG2k-ALN was tested by X-ray photoelectron spectroscopy. Isothermal titration calorimetry data indicated that similar to free ALN, both ALN-PEG2k-ALN and APA-CPNPs can bind to calcium ions. The bone-binding ability of APA-CPNPs was verified via ex vivo imaging of bone fragments. An in vitro release experiment demonstrated that APA-CPNPs can release drug faster in an acid environment than a neutral environment. Cell viability experiments indicated that blank APA-CPNPs possessed excellent biocompatibility with normal cells. Methotrexate (MTX) loaded APA-CPNPs have the same ability to inhibit cancer cells as free drug at high concentrations, while they are slightly weaker at low concentrations. All of these experiments verified the prospective application of APA-CPNPs as a bone-targeting drug delivery system.
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Özarslan AC, Yücel S. Fabrication and characterization of strontium incorporated 3-D bioactive glass scaffolds for bone tissue from biosilica. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:350-357. [DOI: 10.1016/j.msec.2016.06.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 05/07/2016] [Accepted: 06/01/2016] [Indexed: 10/21/2022]
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Pujari-Palmer M, Pujari-Palmer S, Lu X, Lind T, Melhus H, Engstrand T, Karlsson-Ott M, Engqvist H. Pyrophosphate Stimulates Differentiation, Matrix Gene Expression and Alkaline Phosphatase Activity in Osteoblasts. PLoS One 2016; 11:e0163530. [PMID: 27701417 PMCID: PMC5049792 DOI: 10.1371/journal.pone.0163530] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Accepted: 09/09/2016] [Indexed: 12/29/2022] Open
Abstract
Pyrophosphate is a potent mitogen, capable of stimulating proliferation in multiple cell types, and a critical participant in bone mineralization. Pyrophosphate can also affect the resorption rate and bioactivity of orthopedic ceramics. The present study investigated whether calcium pyrophosphate affected proliferation, differentiation and gene expression in early (MC3T3 pre-osteoblast) and late stage (SAOS-2 osteosarcoma) osteoblasts. Pyrophosphate stimulated peak alkaline phosphatase activity by 50% and 150% at 100μM and 0.1μM in MC3T3, and by 40% in SAOS-2. The expression of differentiation markers collagen 1 (COL1), alkaline phosphatase (ALP), osteopontin (OPN), and osteocalcin (OCN) were increased by an average of 1.5, 2, 2 and 3 fold, by high concentrations of sodium pyrophosphate (100μM) after 7 days of exposure in MC3T3. COX-2 and ANK expression did not differ significantly from controls in either treatment group. Though both high and low concentrations of pyrophosphate stimulate ALP activity, only high concentrations (100μM) stimulated osteogenic gene expression. Pyrophosphate did not affect proliferation in either cell type. The results of this study confirm that chronic exposure to pyrophosphate exerts a physiological effect upon osteoblast differentiation and ALP activity, specifically by stimulating osteoblast differentiation markers and extracellular matrix gene expression.
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Affiliation(s)
- Michael Pujari-Palmer
- Division of Applied Material Science, Department of Engineering Sciences, Uppsala University, Uppsala, Sweden
| | - Shiuli Pujari-Palmer
- Division of Applied Material Science, Department of Engineering Sciences, Uppsala University, Uppsala, Sweden
| | - Xi Lu
- Division of Applied Material Science, Department of Engineering Sciences, Uppsala University, Uppsala, Sweden
| | - Thomas Lind
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Håkan Melhus
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Thomas Engstrand
- Stockholm Craniofacial Centre, Department of Reconstructive Plastic Surgery, Karolinska University Hospital, Stockholm, Sweden
- Department of Materials Chemistry, Polymer section, Uppsala University, Uppsala, Sweden
| | - Marjam Karlsson-Ott
- Division of Applied Material Science, Department of Engineering Sciences, Uppsala University, Uppsala, Sweden
- * E-mail:
| | - Hakan Engqvist
- Division of Applied Material Science, Department of Engineering Sciences, Uppsala University, Uppsala, Sweden
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Colquhoun R, Gadegaard N, Healy DM, Tanner KE. Characterisation of CorGlaes(®) Pure 107 fibres for biomedical applications. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:149. [PMID: 27582069 PMCID: PMC5007269 DOI: 10.1007/s10856-016-5752-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 07/07/2016] [Indexed: 06/06/2023]
Abstract
A degradable ultraphosphate (55 mol % P2O5) quinternary phosphate glass composition has been characterised in terms of its chemical, mechanical and degradation properties both as a bulk material and after drawing into fibres. This glass formulation displayed a large processing window simplifying fibre drawing. The fibres displayed stiffness and strength of 65.5 ± 20.8 GPa and 426±143 MPa. While amorphous discs of the glass displayed a linear dissolution rate of 0.004 mg cm(-2) h(-1) at 37 °C, in a static solution with a reduction in media pH. Once drawn into fibres, the dissolution process dropped the pH to <2 in distilled water, phosphate buffer saline and corrected-simulated body fluid, displaying an autocatalytic effect with >90 % mass loss in 4 days, about seven times faster than anticipated for this solution rate. Only cell culture media was able to buffer the pH taking over a week for full fibre dissolution, however, still four times faster dissolution rate than as a bulk material. However, at early times the development of a HCA layer was seen indicating potential bioactivity. Thus, although initial analysis indicated potential orthopaedic implant applications, autocatalysis leads to accelerating degradation in vitro.
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Affiliation(s)
- Ross Colquhoun
- Biomedical Engineering Division, School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK
- Present address: Scottish Enterprise, Glasgow, G2 8LU, UK
| | - Nikolaj Gadegaard
- Biomedical Engineering Division, School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK
| | - David M Healy
- Giltech Ltd, 12 North Harbour St, Ayr, KA8 8BN, UK
- Present address: IDP Services Ltd., Ayr, KA7 4EG, UK
| | - K Elizabeth Tanner
- Biomedical Engineering Division, School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK.
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40
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Development of a new family of monolithic calcium (pyro)phosphate glasses by soft chemistry. Acta Biomater 2016; 41:320-7. [PMID: 27221792 DOI: 10.1016/j.actbio.2016.05.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 05/13/2016] [Accepted: 05/20/2016] [Indexed: 12/19/2022]
Abstract
UNLABELLED The development of bioactive phosphate-based glasses is essential in biomaterials science, and especially for bone substitution applications. In this context, the preparation of amorphous calcium-phosphorus hydroxide/oxide monoliths at low temperature is a key challenge for being able to develop novel hybrid materials for these applications. We herein report for the first time the synthesis and physical chemical characterisation of a novel family of pyrophosphate-based glasses (with the formula: {[(Ca(2+))1-x(H(+)/K(+))2x]2[(P2O7(4-))1-y(PO4(3-))4y/3]} n(H2O)), which were prepared by soft chemistry using low temperatures (T<70°C) and water as a solvent. The effect of the initial Ca/Pyrophosphate ratio on the structure and morphology of these pyrophosphate glasses was investigated in detail. Depending on this ratio, a glass (mixed calcium pyro- and orthophosphate) or a glass-ceramic (Ca10K4(P2O7)6·9H2O crystals embedded in the amorphous phase) was obtained. The proportion of the crystalline phase increased with an increase in the Ca/Pyrophosphate ratio in the batch solution. As expected for a glass, the formation of the glassy material was demonstrated not to be thermodynamically but rather kinetically driven, and the washing step was found to be crucial to prevent crystallisation. The stability of the amorphous phase was discussed considering the structural degrees of freedom of pyrophosphate entities, ionic strength of the initial solution and the inhibitory effect of orthophosphate ions. Overall, this new strategy of preparation of monolithic calcium-(pyro)phosphate based glasses using soft chemistry in water is highly promising in view of preparing new functional organic-inorganic hybrids for bone substitution applications. STATEMENT OF SIGNIFICANCE Phosphate-based glasses have gradually emerged as a potential alternative to silicate bioactive glasses in order to induce different biological mechanisms of degradation. The synthesis of such monolithic glasses at low temperature is a key step to allow new inorganic glass compositions to be reached and hybrid materials to be prepared. Although sol-gel and coacervate methods (respectively orthophosphate and metaphosphate precursors) have already been described to prepare such glasses, the use of toxic solvents and/or the final temperature treatment associated to these processes could limit the use of these materials for biomedical applications and/or the further development of hybrids. It is shown here that pyrophosphate precursors are an alternative strategy to obtain monolithic calcium (pyro)phosphate glasses under soft conditions (water solvent, 70°C).
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Chieruzzi M, Pagano S, Moretti S, Pinna R, Milia E, Torre L, Eramo S. Nanomaterials for Tissue Engineering In Dentistry. NANOMATERIALS 2016; 6:nano6070134. [PMID: 28335262 PMCID: PMC5224610 DOI: 10.3390/nano6070134] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 07/04/2016] [Accepted: 07/18/2016] [Indexed: 02/08/2023]
Abstract
The tissue engineering (TE) of dental oral tissue is facing significant changes in clinical treatments in dentistry. TE is based on a stem cell, signaling molecule, and scaffold triad that must be known and calibrated with attention to specific sectors in dentistry. This review article shows a summary of micro- and nanomorphological characteristics of dental tissues, of stem cells available in the oral region, of signaling molecules usable in TE, and of scaffolds available to guide partial or total reconstruction of hard, soft, periodontal, and bone tissues. Some scaffoldless techniques used in TE are also presented. Then actual and future roles of nanotechnologies about TE in dentistry are presented.
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Affiliation(s)
- Manila Chieruzzi
- Department of Civil and Environmental Engineering-UdR INSTM-University of Perugia, Strada di Pentima, 4-05100 Terni, Italy.
| | - Stefano Pagano
- Department of Surgical and Biomedical Sciences-University of Perugia, S. Andrea delle Fratte, 06156 Perugia, Italy.
| | - Silvia Moretti
- Department of Experimental Medicine-University of Perugia Polo Unico Sant'Andrea delle Fratte, 06132 Perugia, Italy.
| | - Roberto Pinna
- Department of Biomedical Science-University of Sassari viale San Pietro 43/C -07100 Sassari, Italy.
| | - Egle Milia
- Department of Biomedical Science-University of Sassari viale San Pietro 43/C -07100 Sassari, Italy.
| | - Luigi Torre
- Department of Civil and Environmental Engineering-UdR INSTM-University of Perugia, Strada di Pentima, 4-05100 Terni, Italy.
| | - Stefano Eramo
- Department of Surgical and Biomedical Sciences-University of Perugia, S. Andrea delle Fratte, 06156 Perugia, Italy.
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Ding ZZ, Fan ZH, Huang XW, Bai SM, Song DW, Lu Q, Kaplan DL. Bioactive Natural Protein-Hydroxyapatite Nanocarriers for Optimizing Osteogenic Differentiation of Mesenchymal Stem Cells. J Mater Chem B 2016; 4:3555-3561. [PMID: 27482381 PMCID: PMC4959278 DOI: 10.1039/c6tb00509h] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Improving the controlled release of bioactive growth factors to regulate cell behavior and tissue regeneration remains a need in tissue engineering and regenerative medicine. Inorganic and polymeric nanoparticles have been extensively fabricated as bioactive biomaterials with enhanced biocompatibility and effective carriers of therapeutic agents, however, challenges remain such as the achievement of high loading capacity and sustained release, and the bioactivity preservation of growth factors. Here, a multilayered, silk coated hydroxyapatite (HA) nanocarrier with drug loading-release capacity superior to pure silk or HA nanoparticles was developed. Bone morphogenetic protein-2 (BMP-2) was bound to the silk coatings with a high binding efficiency of 99.6%, significantly higher than that in silk or the HA nanoparticles alone. The release of BMP-2 was sustained in vitro over a period of 21 days without burst release. Compared with BMP-2 loaded silk or HA particles, bone mesenchymal stem cells (BMSCs) showed improved proliferation and osteogenesis when cultured with the BMP-2 loaded composite nanocarriers. Therefore, these silk-HA composite nanoparticles present a useful approach to designing bioactive nanocarrier systems with enhanced functions for bone tissue regeneration needs.
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Affiliation(s)
- Z. Z. Ding
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
- School of Biology and Basic Medical Sciences, Soochow University, Suzhou 215123, People’s Republic of China
| | - Z. H. Fan
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou 215000, People’s Republic of China
| | - X. W. Huang
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
| | - S. M. Bai
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
| | - D. W. Song
- Tai’an City Central Hospital, Taian 271000, People’s Republic of China Address
| | - Q. Lu
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
| | - D. L. Kaplan
- National Engineering Laboratory for Modern Silk and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, United States
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43
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Correia CR, Pirraco RP, Cerqueira MT, Marques AP, Reis RL, Mano JF. Semipermeable Capsules Wrapping a Multifunctional and Self-regulated Co-culture Microenvironment for Osteogenic Differentiation. Sci Rep 2016; 6:21883. [PMID: 26905619 PMCID: PMC4764811 DOI: 10.1038/srep21883] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 01/11/2016] [Indexed: 01/26/2023] Open
Abstract
A new concept of semipermeable reservoirs containing co-cultures of cells and supporting microparticles is presented, inspired by the multi-phenotypic cellular environment of bone. Based on the deconstruction of the "stem cell niche", the developed capsules are designed to drive a self-regulated osteogenesis. PLLA microparticles functionalized with collagen I, and a co-culture of adipose stem (ASCs) and endothelial (ECs) cells are immobilized in spherical liquified capsules. The capsules are coated with multilayers of poly(L-lysine), alginate, and chitosan nano-assembled through layer-by-layer. Capsules encapsulating ASCs alone or in a co-culture with ECs are cultured in endothelial medium with or without osteogenic differentiation factors. Results show that osteogenesis is enhanced by the co-encapsulation, which occurs even in the absence of differentiation factors. These findings are supported by an increased ALP activity and matrix mineralization, osteopontin detection, and the up regulation of BMP-2, RUNX2 and BSP. The liquified co-capsules also act as a VEGF and BMP-2 cytokines release system. The proposed liquified capsules might be a valuable injectable self-regulated system for bone regeneration employing highly translational cell sources.
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Affiliation(s)
- Clara R Correia
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4805-017 Barco, Guimarães, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rogério P Pirraco
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4805-017 Barco, Guimarães, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Mariana T Cerqueira
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4805-017 Barco, Guimarães, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Alexandra P Marques
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4805-017 Barco, Guimarães, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rui L Reis
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4805-017 Barco, Guimarães, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - João F Mano
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4805-017 Barco, Guimarães, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
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44
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Gras P, Baker A, Combes C, Rey C, Sarda S, Wright AJ, Smith ME, Hanna JV, Gervais C, Laurencin D, Bonhomme C. From crystalline to amorphous calcium pyrophosphates: A solid state Nuclear Magnetic Resonance perspective. Acta Biomater 2016; 31:348-357. [PMID: 26476341 DOI: 10.1016/j.actbio.2015.10.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 09/09/2015] [Accepted: 10/12/2015] [Indexed: 12/14/2022]
Abstract
Hydrated calcium pyrophosphates (CPP, Ca2P2O7·nH2O) are a fundamental family of materials among osteoarticular pathologic calcifications. In this contribution, a comprehensive multinuclear NMR (Nuclear Magnetic Resonance) study of four crystalline and two amorphous phases of this family is presented. (1)H, (31)P and (43)Ca MAS (Magic Angle Spinning) NMR spectra were recorded, leading to informative fingerprints characterizing each compound. In particular, different (1)H and (43)Ca solid state NMR signatures were observed for the amorphous phases, depending on the synthetic procedure used. The NMR parameters of the crystalline phases were determined using the GIPAW (Gauge Including Projected Augmented Wave) DFT approach, based on first-principles calculations. In some cases, relaxed structures were found to improve the agreement between experimental and calculated values, demonstrating the importance of proton positions and pyrophosphate local geometry in this particular NMR crystallography approach. Such calculations serve as a basis for the future ab initio modeling of the amorphous CPP phases. STATEMENT OF SIGNIFICANCE The general concept of NMR crystallography is applied to the detailed study of calcium pyrophosphates (CPP), whether hydrated or not, and whether crystalline or amorphous. CPP are a fundamental family of materials among osteoarticular pathologic calcifications. Their prevalence increases with age, impacting on 17.5% of the population after the age of 80. They are frequently involved or associated with acute articular arthritis such as pseudogout. Current treatments are mainly directed at relieving the symptoms of joint inflammation but not at inhibiting CPP formation nor at dissolving these crystals. The combination of advanced NMR techniques, modeling and DFT based calculation of NMR parameters allows new original insights in the detailed structural description of this important class of biomaterials.
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Affiliation(s)
- Pierre Gras
- CIRIMAT, INPT-CNRS-UPS, Université de Toulouse, ENSIACET, Toulouse, France
| | - Annabelle Baker
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Christèle Combes
- CIRIMAT, INPT-CNRS-UPS, Université de Toulouse, ENSIACET, Toulouse, France
| | - Christian Rey
- CIRIMAT, INPT-CNRS-UPS, Université de Toulouse, ENSIACET, Toulouse, France
| | - Stéphanie Sarda
- CIRIMAT, INPT-CNRS-UPS, Université de Toulouse, Université Paul Sabatier, Toulouse, France
| | - Adrian J Wright
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Mark E Smith
- Vice-Chancellor's Office, University House, Lancaster University, Lancaster LA14YW, UK; Department of Physics, University of Warwick, Coventry CV4 7AL, UK
| | - John V Hanna
- Department of Physics, University of Warwick, Coventry CV4 7AL, UK
| | - Christel Gervais
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Collège de France, UMR 7574, Chimie de la Matière Condensée de Paris, 75005 Paris, France
| | - Danielle Laurencin
- Institut Charles Gerhardt de Montpellier, UMR 5253, CNRS-UM-ENSCM, Université de Montpellier, Montpellier, France
| | - Christian Bonhomme
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Collège de France, UMR 7574, Chimie de la Matière Condensée de Paris, 75005 Paris, France.
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45
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Yang B, Zuo Y, Zou Q, Li L, Li J, Man Y, Li Y. Effect of ultrafine poly(ε-caprolactone) fibers on calcium phosphate cement: in vitro degradation and in vivo regeneration. Int J Nanomedicine 2016; 11:163-77. [PMID: 26792992 PMCID: PMC4708242 DOI: 10.2147/ijn.s91596] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
We incorporated ultrafine polymer fibers into calcium phosphate cement (CPC) to improve the resorption rate of CPC with fiber degradation. Different weight percentages of electrospun poly(ε-caprolactone) fibers (0%, 3%, and 7%, named as ultrafine fiber-incorporated CPC0 [UFICPC0], UFICPC3, and UFICPC7) were included into preset CPC specimens for in vitro immersion in lipase phosphate-buffered solution and long-term in vivo implantation in the femoral condyle of rabbits. The effect of the ultrafine poly(ε-caprolactone) fibers with a diameter ranging from nanometer to micrometer on CPC degradation was evaluated by measuring the pH of the medium, mass loss, porosity, and physiochemical properties. For the in vivo evaluation, histomorphometrical analysis as well as three-dimensional (3D) reconstruction was applied to assess the osteogenic properties of the CPC composite. After in vitro immersion and in vivo implantation, the total porosity and macroporosity as well as the bone formation and ingrowth increased significantly during time in the fiber-incorporated CPC specimens. After 24 weeks of implantation, the degraded space was occupied by newly formed bone, and the UFICPC3 and UFICPC7 composites showed ~3.5 times higher fraction of bone volume than that of the pristine CPC (UFICPC0). In vitro and in vivo results proved that the introduction of ultrafine degradable fibers within a CPC matrix can be used to improve macroporosity efficiently and enhance CPC degradation and bone ingrowth largely.
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Affiliation(s)
- Boyuan Yang
- Research Center for Nano Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu, People’s Republic of China
| | - Yi Zuo
- Research Center for Nano Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu, People’s Republic of China
| | - Qin Zou
- Research Center for Nano Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu, People’s Republic of China
| | - Limei Li
- Research Center for Nano Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu, People’s Republic of China
| | - Jidong Li
- Research Center for Nano Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu, People’s Republic of China
| | - Yi Man
- State Key Laboratory of Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, People’s Republic of China
| | - Yubao Li
- Research Center for Nano Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu, People’s Republic of China
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46
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Wang A, Williams RL, Jumbu N, Paxton JZ, Davis ET, Snow MA, Campbell Ritchie A, Johansson CB, Sammons RL, Grover LM. Development of tissue engineered ligaments with titanium spring reinforcement. RSC Adv 2016. [DOI: 10.1039/c6ra18005a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Titanium spring reinforced tissue-engineered ligament replacement: enhancing construct stiffness, load propagation and robustness under cyclic loading.
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Affiliation(s)
- Anqi Wang
- The School of Dentistry
- University of Birmingham
- Birmingham
- UK
| | | | - Neeraj Jumbu
- The Institute of Immunology and Immunotherapy
- College of Medical and Dental Sciences
- University of Birmingham
- Birmingham
- UK
| | | | - Edward T. Davis
- The Royal Orthopaedic Hospital NHS Foundation Trust
- Birmingham
- UK
| | - Martyn A. Snow
- The Royal Orthopaedic Hospital NHS Foundation Trust
- Birmingham
- UK
| | | | - Carina B. Johansson
- Department of Prosthodontics/Dental Materials Science
- Institute of Odontology
- The Sahlgrenska Academy
- University of Gothenburg
- Gothenburg
| | | | - Liam M. Grover
- School of Chemical Engineering
- University of Birmingham
- Birmingham
- UK
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47
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Bioceramic Implant Induces Bone Healing of Cranial Defects. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2015; 3:e491. [PMID: 26495204 PMCID: PMC4560224 DOI: 10.1097/gox.0000000000000467] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 07/01/2015] [Indexed: 11/27/2022]
Abstract
Autologous bone or inert alloplastic materials used in cranial reconstructions are techniques that are associated with resorption, infection, and implant exposure. As an alternative, a calcium phosphate–based implant was developed and previously shown to potentially stimulate bone growth. We here uncover evidence of induced bone formation in 2 patients. Histological examination 9 months postoperatively showed multinuclear cells in the central defect zone and bone ingrowth in the bone-implant border zone. An increased expression of bone-associated markers was detected. The other patient was investigated 50 months postoperatively. Histological examination revealed ceramic materials covered by vascularized compact bone. The bone regenerative effect induced by the implant may potentially improve long-term clinical outcome compared with conventional techniques, which needs to be verified in a clinical study.
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48
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Bae J, Ida Y, Sekine K, Kawano F, Hamada K. Effects of high-energy ball-milling on injectability and strength of β-tricalcium-phosphate cement. J Mech Behav Biomed Mater 2015; 47:77-86. [DOI: 10.1016/j.jmbbm.2015.03.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2014] [Revised: 03/02/2015] [Accepted: 03/10/2015] [Indexed: 10/23/2022]
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49
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Wang P, Liu X, Zhao L, Weir MD, Sun J, Chen W, Man Y, Xu HHK. Bone tissue engineering via human induced pluripotent, umbilical cord and bone marrow mesenchymal stem cells in rat cranium. Acta Biomater 2015; 18:236-48. [PMID: 25712391 DOI: 10.1016/j.actbio.2015.02.011] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 02/03/2015] [Accepted: 02/13/2015] [Indexed: 02/05/2023]
Abstract
Human induced pluripotent stem cells (hiPSCs) are an exciting cell source with great potential for tissue engineering. Human bone marrow mesenchymal stem cells (hBMSCs) have been used in clinics but are limited by several disadvantages, hence alternative sources of MSCs such as umbilical cord MSCs (hUCMSCs) are being investigated. However, there has been no report comparing hiPSCs, hUCMSCs and hBMSCs for bone regeneration. The objectives of this pilot study were to investigate hiPSCs, hUCMSCs and hBMSCs for bone tissue engineering, and compare their bone regeneration via seeding on biofunctionalized macroporous calcium phosphate cement (CPC) in rat cranial defects. For all three types of cells, approximately 90% of the cells remained alive on CPC scaffolds. Osteogenic genes were up-regulated, and mineral synthesis by cells increased with time in vitro for all three types of cells. The new bone area fractions at 12weeks (mean±sd; n=6) were (30.4±5.8)%, (27.4±9.7)% and (22.6±4.7)% in hiPSC-MSC-CPC, hUCMSC-CPC and hBMSC-CPC respectively, compared to (11.0±6.3)% for control (p<0.05). No significant differences were detected among the three types of stem cells (p>0.1). New blood vessel density was higher in cell-seeded groups than control (p<0.05). De novo bone formation and participation by implanted cells was confirmed via immunohistochemical staining. In conclusion, (1) hiPSCs, hUCMSCs and hBMSCs greatly enhanced bone regeneration, more than doubling the new bone amount of cell-free CPC control; (2) hiPSC-MSCs and hUCMSCs represented viable alternatives to hBMSCs; (3) biofunctionalized macroporous CPC-stem cell constructs had a robust capacity for bone regeneration.
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Affiliation(s)
- Ping Wang
- Biomaterials & Tissue Engineering Division, Department of Endodontics Prosthodontics and Operative Dentistry, University of Maryland Dental School, Baltimore, MD 21201, USA; State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Xian Liu
- Biomaterials & Tissue Engineering Division, Department of Endodontics Prosthodontics and Operative Dentistry, University of Maryland Dental School, Baltimore, MD 21201, USA; State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Liang Zhao
- Biomaterials & Tissue Engineering Division, Department of Endodontics Prosthodontics and Operative Dentistry, University of Maryland Dental School, Baltimore, MD 21201, USA; Department of Orthopaedic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China.
| | - Michael D Weir
- Biomaterials & Tissue Engineering Division, Department of Endodontics Prosthodontics and Operative Dentistry, University of Maryland Dental School, Baltimore, MD 21201, USA
| | - Jirun Sun
- Dr. Anthony Volpe Research Center, American Dental Association Foundation, Gaithersburg, MD 20899, USA
| | - Wenchuan Chen
- Biomaterials & Tissue Engineering Division, Department of Endodontics Prosthodontics and Operative Dentistry, University of Maryland Dental School, Baltimore, MD 21201, USA; State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Yi Man
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Hockin H K Xu
- Biomaterials & Tissue Engineering Division, Department of Endodontics Prosthodontics and Operative Dentistry, University of Maryland Dental School, Baltimore, MD 21201, USA; Center for Stem Cell Biology and Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA; University of Maryland Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Mechanical Engineering Department, University of Maryland Baltimore County, Baltimore, MD 21250, USA.
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50
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Perez RA, Shin SH, Han CM, Kim HW. Bioactive injectables based on calcium phosphates for hard tissues: A recent update. Tissue Eng Regen Med 2015. [DOI: 10.1007/s13770-015-0096-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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