151
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Yu X, Wang L, Xia Z, Chen L, Jiang X, Rowe D, Wei M. Modulation of Host Osseointegration during Bone Regeneration by Controlling Exogenous Stem Cells Differentiation Using a Material Approach. Biomater Sci 2014; 2:242-251. [PMID: 24999385 PMCID: PMC4078879 DOI: 10.1039/c3bm60173k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Stem cell-based tissue engineering for large bone defect healing has attracted enormous attention in regenerative medicine. However, sufficient osseointegration of the grafts combined with exogenous stem cells still remains a major challenge. Here we developed a material approach to modulate the integration of the grafts to the host tissue when exogenous bone marrow stromal cells (BMSCs) were used as donor cells. Distinctive osseointegration of bone grafts was observed as we varied the content of hydroxyapatite (HA) in the tissue scaffolds implanted in a mouse femur model. More than 80% of new bone was formed in the first two weeks of implantation in high HA content scaffold but lack of host integration while only less than 5% of the new bone was formed during this time period in the no HA group but with much stronger host integration. Cell origin analysis leveraging GFP reporter indicates new bone in HA containing groups was mainly derived from donor BMSCs. In comparison, both host and donor cells were found on new bone surface in the no HA groups which led to seamless bridging between host tissue and the scaffold. Most importantly, host integration during bone formation is closely dictated to the content of HA present in the scaffolds. Taken together, we demonstrate a material approach to modulate the osseointegration of bone grafts in the context of exogenous stem cell-based bone healing strategy which might lead to fully functional bone tissue regeneration.
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Affiliation(s)
- Xiaohua Yu
- Department of Materials Science and Engineering, Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA, University of Connecticut, Storrs, CT 06269, USA
| | - Liping Wang
- Department of Materials Science and Engineering, Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA, University of Connecticut, Storrs, CT 06269, USA
| | - Zengmin Xia
- Department of Materials Science and Engineering, Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA, University of Connecticut, Storrs, CT 06269, USA
| | - Li Chen
- Department of Materials Science and Engineering, Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA, University of Connecticut, Storrs, CT 06269, USA
| | - Xi Jiang
- Department of Materials Science and Engineering, Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA, University of Connecticut, Storrs, CT 06269, USA
| | - David Rowe
- Department of Materials Science and Engineering, Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA, University of Connecticut, Storrs, CT 06269, USA
| | - Mei Wei
- Department of Materials Science and Engineering, Department of Reconstructive Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA, University of Connecticut, Storrs, CT 06269, USA
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152
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Bueno VB, Bentini R, Catalani LH, Barbosa LRS, Petri DFS. Synthesis and characterization of xanthan-hydroxyapatite nanocomposites for cellular uptake. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 37:195-203. [PMID: 24582240 DOI: 10.1016/j.msec.2014.01.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 12/08/2013] [Accepted: 01/05/2014] [Indexed: 11/25/2022]
Abstract
In this work xanthan-nanohydroxyapatite (XnHAp) and its equivalent strontium substituted (XnHApSr) were synthesized by the precipitation of nanohydroxyapatite in xanthan aqueous solution, characterized and compared to conventional hydroxyapatite particles (HAp). XnHAp and XnHApSr were less crystalline than HAp, as revealed by X-ray diffraction. Xanthan chains enriched the surface of XnHAp and XnHApSr particles, increasing the zeta potential values from -(7±1)mV, determined for HAp, to -(17±3)mV and -(25±3)mV, respectively. This effect led to high colloidal stability of XnHAp and XnHApSr dispersions and acicular particles (140±10)nm long and (8±2)nm wide, as determined by scanning electron microscopy and atomic force microscopy. XnHAp and XnHApSr particles were added to xanthan hydrogels to produce compatible nanocomposites (XCA/XnHAp and XCA/XnHApSr). Dried nanocomposites presented surface energy, Young's modulus and stress at break values comparable to those determined for bare xanthan matrix. Moreover, adding XnHAp or XnHApSr nanoparticles to xanthan hydrogel did not influence its porous morphology, gel content and swelling ratio. XCA/XnHAp and XCA/XnHApSr composites proved to be suitable for osteoblast growth and particularly XCA/XnHapSr composites induced higher alkaline phosphatase activity.
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Affiliation(s)
- Vania Blasques Bueno
- Instituto de Química, Universidade de São Paulo, P.O. Box 26077, São Paulo, SP 05513-970, Brazil
| | - Ricardo Bentini
- Instituto de Química, Universidade de São Paulo, P.O. Box 26077, São Paulo, SP 05513-970, Brazil
| | - Luiz Henrique Catalani
- Instituto de Química, Universidade de São Paulo, P.O. Box 26077, São Paulo, SP 05513-970, Brazil
| | - Leandro R S Barbosa
- Instituto de Física, DFGE, Universidade de São Paulo, São Paulo, 05508-090 SP, Brazil
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153
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Maazouz Y, Montufar EB, Guillem-Marti J, Fleps I, Öhman C, Persson C, Ginebra MP. Robocasting of biomimetic hydroxyapatite scaffolds using self-setting inks. J Mater Chem B 2014; 2:5378-5386. [DOI: 10.1039/c4tb00438h] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new self-setting ceramic ink was developed for robocasting of biomimetic hydroxyapatite scaffolds, based on alpha-tricalcium phosphate and gelatine. After setting a biomimetic hydroxyapatite is obtained, with higher reactivity and resorbability than high-temperature sintered hydroxyapatite. The setting reaction of the ink results in a significant increase of the mechanical properties of the scaffolds.
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Affiliation(s)
- Y. Maazouz
- Biomaterials, Biomechanics and Tissue Engineering Group
- Department of Materials Science and Metallurgical Engineering
- Technical University of Catalonia
- , Spain
- Biomedical Research Networking Center in Bioengineering
| | - E. B. Montufar
- Biomaterials, Biomechanics and Tissue Engineering Group
- Department of Materials Science and Metallurgical Engineering
- Technical University of Catalonia
- , Spain
- Biomedical Research Networking Center in Bioengineering
| | - J. Guillem-Marti
- Biomaterials, Biomechanics and Tissue Engineering Group
- Department of Materials Science and Metallurgical Engineering
- Technical University of Catalonia
- , Spain
- Biomedical Research Networking Center in Bioengineering
| | - I. Fleps
- Biomaterials, Biomechanics and Tissue Engineering Group
- Department of Materials Science and Metallurgical Engineering
- Technical University of Catalonia
- , Spain
| | - C. Öhman
- Division of Applied Materials Science
- Department of Engineering Sciences
- Uppsala University
- Sweden
| | - C. Persson
- Division of Applied Materials Science
- Department of Engineering Sciences
- Uppsala University
- Sweden
| | - M. P. Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group
- Department of Materials Science and Metallurgical Engineering
- Technical University of Catalonia
- , Spain
- Biomedical Research Networking Center in Bioengineering
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154
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Zhang X, Wu C, Chang J, Sun J. Stimulation of osteogenic protein expression for rat bone marrow stromal cells involved in the ERK signalling pathway by the ions released from Ca7Si2P2O16bioceramics. J Mater Chem B 2014; 2:885-891. [DOI: 10.1039/c3tb21441a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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155
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Strontium-doped calcium phosphate and hydroxyapatite granules promote different inflammatory and bone remodelling responses in normal and ovariectomised rats. PLoS One 2013; 8:e84932. [PMID: 24376855 PMCID: PMC3871578 DOI: 10.1371/journal.pone.0084932] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Accepted: 11/29/2013] [Indexed: 12/27/2022] Open
Abstract
The healing of bone defects may be hindered by systemic conditions such as osteoporosis. Calcium phosphates, with or without ion substitutions, may provide advantages for bone augmentation. However, the mechanism of bone formation with these materials is unclear. The aim of this study was to evaluate the healing process in bone defects implanted with hydroxyapatite (HA) or strontium-doped calcium phosphate (SCP) granules, in non-ovariectomised (non-OVX) and ovariectomised (OVX) rats. After 0 (baseline), six and 28d, bone samples were harvested for gene expression analysis, histology and histomorphometry. Tumour necrosis factor-α (TNF-α), at six days, was higher in the HA, in non-OVX and OVX, whereas interleukin-6 (IL-6), at six and 28d, was higher in SCP, but only in non-OVX. Both materials produced a similar expression of the receptor activator of nuclear factor kappa-B ligand (RANKL). Higher expression of osteoclastic markers, calcitonin receptor (CR) and cathepsin K (CatK), were detected in the HA group, irrespective of non-OVX or OVX. The overall bone formation was comparable between HA and SCP, but with topological differences. The bone area was higher in the defect centre of the HA group, mainly in the OVX, and in the defect periphery of the SCP group, in both non-OVX and OVX. It is concluded that HA and SCP granules result in comparable bone formation in trabecular bone defects. As judged by gene expression and histological analyses, the two materials induced different inflammatory and bone remodelling responses. The modulatory effects are associated with differences in the spatial distribution of the newly formed bone.
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156
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Loca D, Locs J, Berzina-Cimdina L. Preparation of hydroxyapatite/poly(lactic acid) hybrid microparticles for local drug delivery. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1757-899x/47/1/012007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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157
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Shimauchi H, Nemoto E, Ishihata H, Shimomura M. Possible functional scaffolds for periodontal regeneration. JAPANESE DENTAL SCIENCE REVIEW 2013. [DOI: 10.1016/j.jdsr.2013.05.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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158
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Henkel J, Woodruff MA, Epari DR, Steck R, Glatt V, Dickinson IC, Choong PFM, Schuetz MA, Hutmacher DW. Bone Regeneration Based on Tissue Engineering Conceptions - A 21st Century Perspective. Bone Res 2013; 1:216-48. [PMID: 26273505 PMCID: PMC4472104 DOI: 10.4248/br201303002] [Citation(s) in RCA: 473] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Accepted: 07/20/2013] [Indexed: 12/18/2022] Open
Abstract
The role of Bone Tissue Engineering in the field of Regenerative Medicine has been the topic of substantial research over the past two decades. Technological advances have improved orthopaedic implants and surgical techniques for bone reconstruction. However, improvements in surgical techniques to reconstruct bone have been limited by the paucity of autologous materials available and donor site morbidity. Recent advances in the development of biomaterials have provided attractive alternatives to bone grafting expanding the surgical options for restoring the form and function of injured bone. Specifically, novel bioactive (second generation) biomaterials have been developed that are characterised by controlled action and reaction to the host tissue environment, whilst exhibiting controlled chemical breakdown and resorption with an ultimate replacement by regenerating tissue. Future generations of biomaterials (third generation) are designed to be not only osteoconductive but also osteoinductive, i.e. to stimulate regeneration of host tissues by combining tissue engineering and in situ tissue regeneration methods with a focus on novel applications. These techniques will lead to novel possibilities for tissue regeneration and repair. At present, tissue engineered constructs that may find future use as bone grafts for complex skeletal defects, whether from post-traumatic, degenerative, neoplastic or congenital/developmental "origin" require osseous reconstruction to ensure structural and functional integrity. Engineering functional bone using combinations of cells, scaffolds and bioactive factors is a promising strategy and a particular feature for future development in the area of hybrid materials which are able to exhibit suitable biomimetic and mechanical properties. This review will discuss the state of the art in this field and what we can expect from future generations of bone regeneration concepts.
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Affiliation(s)
- Jan Henkel
- Institute of Health & Biomedical Innovation, Queensland University of Technology , Brisbane, Queensland, Australia
| | - Maria A Woodruff
- Institute of Health & Biomedical Innovation, Queensland University of Technology , Brisbane, Queensland, Australia
| | - Devakara R Epari
- Institute of Health & Biomedical Innovation, Queensland University of Technology , Brisbane, Queensland, Australia
| | - Roland Steck
- Institute of Health & Biomedical Innovation, Queensland University of Technology , Brisbane, Queensland, Australia
| | - Vaida Glatt
- Institute of Health & Biomedical Innovation, Queensland University of Technology , Brisbane, Queensland, Australia
| | - Ian C Dickinson
- Orthopaedic Oncology Service, Princess Alexandra Hospital , Brisbane, Australia
| | - Peter F M Choong
- Department of Surgery, University of Melbourne, St. Vincent's Hospital , Melbourne, Australia ; Department of Orthopaedics, St. Vincent's Hospital , Melbourne, Australia ; Bone and Soft Tissue Sarcoma Service, Peter MacCallum Cancer Centre , Melbourne, Australia
| | - Michael A Schuetz
- Institute of Health & Biomedical Innovation, Queensland University of Technology , Brisbane, Queensland, Australia ; Orthopaedic and Trauma Services, Princess Alexandra Hospital , Brisbane, Australia
| | - Dietmar W Hutmacher
- Orthopaedic Oncology Service, Princess Alexandra Hospital , Brisbane, Australia ; George W Woodruff School of Mechanical Engineering, Georgia Institute of Technology , Atlanta, GA, USA
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159
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Sariibrahimoglu K, Wolke JGC, Leeuwenburgh SCG, Yubao L, Jansen JA. Injectable biphasic calcium phosphate cements as a potential bone substitute. J Biomed Mater Res B Appl Biomater 2013; 102:415-22. [PMID: 24106108 DOI: 10.1002/jbm.b.33018] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Accepted: 08/01/2013] [Indexed: 01/03/2023]
Abstract
Apatitic calcium phosphate cements (CPCs) have been widely used as bone grafts due to their excellent osteoconductive properties, but the degradation properties are insufficient to stimulate bone healing in large bone defects. A novel approach to overcome the lack of degradability of apatitic CPC involves the development of biphasic CPCs (BCPC) based on tricalcium phosphate (TCP) in both α- and β-polymorphs. The aim of the current study was to prepare and analyze the physicochemical properties of BCPCs based on dual phase α/β-TCP as obtained by heat treatment of pure α-TCP. The handling and mechanical characteristics of the samples as well as the degradation behavior under in vitro condition were investigated and compared with a standard monophasic α-TCP-based CPC. The results showed that different heat treatments of commercially available α-TCP allowed the formation of biphasic calcium phosphate powder with a variety of α/β-TCP ratios. The use of biphasic powder particles as a reactant for CPCs resulted into increased setting and injectability times of the final BCPCs. During hardening of the cements, the amount of apatite formation decreased with increasing β-TCP content in the biphasic precursor powders. The morphology of the monophasic CPC consisted of plate-like crystals, whereas needle-like crystals were observed for BCPCs. In vitro degradation tests demonstrated that dissolution rate and corresponding calcium release from the set cements increased considerably with increasing β-TCP content, suggesting that apatitic CPCs can be rendered degradable by using biphasic α/β-TCP as powder precursor phase.
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Affiliation(s)
- Kemal Sariibrahimoglu
- Department of Biomaterials, Radboud University Nijmegen Medical Center, 6500 HB, Nijmegen, The Netherlands
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160
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Farbod K, Nejadnik MR, Jansen JA, Leeuwenburgh SCG. Interactions between inorganic and organic phases in bone tissue as a source of inspiration for design of novel nanocomposites. TISSUE ENGINEERING PART B-REVIEWS 2013; 20:173-88. [PMID: 23902258 DOI: 10.1089/ten.teb.2013.0221] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Mimicking the nanostructure of bone and understanding the interactions between the nanoscale inorganic and organic components of the extracellular bone matrix are crucial for the design of biomaterials with structural properties and a functionality similar to the natural bone tissue. Generally, these interactions involve anionic and/or cationic functional groups as present in the organic matrix, which exhibit a strong affinity for either calcium or phosphate ions from the mineral phase of bone. This study reviews the interactions between the mineral and organic extracellular matrix components in bone tissue as a source of inspiration for the design of novel nanocomposites. After providing a brief description of the various structural levels of bone and its main constituents, a concise overview is presented on the process of bone mineralization as well as the interactions between calcium phosphate (CaP) nanocrystals and the organic matrix of bone tissue. Bioinspired synthetic approaches for obtaining nanocomposites are subsequently addressed, with specific focus on chemical groups that have affinity for CaPs or are involved in stimulating and controlling mineral formation, that is, anionic functional groups, including carboxyl, phosphate, sulfate, hydroxyl, and catechol groups.
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Affiliation(s)
- Kambiz Farbod
- Department of Biomaterials, Radboud University Nijmegen Medical Centre , Nijmegen, The Netherlands
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161
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Overman JR, Helder MN, ten Bruggenkate CM, Schulten EAJM, Klein-Nulend J, Bakker AD. Growth factor gene expression profiles of bone morphogenetic protein-2-treated human adipose stem cells seeded on calcium phosphate scaffolds in vitro. Biochimie 2013; 95:2304-13. [PMID: 24028822 DOI: 10.1016/j.biochi.2013.08.034] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Accepted: 08/27/2013] [Indexed: 12/17/2022]
Abstract
The secretome of stem cells strongly determines the outcome of tissue engineering strategies. We investigated how the secretome of human adipose stem cells (hASCs) can be affected by substrate, BMP-2 treatment, and degree of differentiation. We hypothesized that as differentiation progresses, hASCs produce increasingly more gene products associated with processes such as angiogenesis and bone remodeling. Human ASCs were treated for 15 min with BMP-2 (10 ng/ml) to enhance osteogenic differentiation, or with vehicle. Subsequently, hASCs were seeded on plastic or on biphasic calcium phosphate (BCP) consisting of 60% hydroxyapatite and 40% β-tricalcium phosphate. A PCR array for ~150 trophic factors and differentiation-related genes was performed at day 21 of culture. A limited set of factors was quantified by qPCR at days 0, 4, 14 and 21, and/or ELISA at day 21. Compared to plastic, BCP-cultured hASCs showed ≥2-fold higher expression of ~20 factors, e.g. cytokines such as IL-6, growth factors such as FGF7 and adhesion molecules such as VCAM1. Expression of another ~50 genes was decreased ≥2-fold on BCP vs. plastic, even though hASCs differentiate better on BCP than on plastic. BMP-2-treatment increased the expression of ~30 factors by hASCs seeded on BCP, while it decreased the expression of only PGF, PPARG and PTN. Substrate affected hASC secretion of Activin A and seemed to affect P1NP release. No clear association between hASC osteogenic differentiation and growth factor expression pattern was observed. Considering our observed lack of association between the degree of differentiation and the expression of factors associated with angiogenesis and bone remodeling by hASCs, future bone regeneration studies should focus more on systematically orchestrating the secretome of stem cells, rather than on inducing osteogenic differentiation of stem cells only. Short incubation with BMP-2 may be a promising treatment to enhance both osteogenic differentiation and environmental modulation.
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Affiliation(s)
- J R Overman
- Dept. Oral Cell Biology, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, MOVE Research Institute Amsterdam, Amsterdam, The Netherlands; Dept. Oral and Maxillofacial Surgery, Academic Centre for Dentistry Amsterdam/VU University Medical Center, MOVE Research Institute Amsterdam, Amsterdam, The Netherlands
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162
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Dorozhkin SV. Calcium Orthophosphate-Based Bioceramics. MATERIALS (BASEL, SWITZERLAND) 2013; 6:3840-3942. [PMID: 28788309 PMCID: PMC5452669 DOI: 10.3390/ma6093840] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 08/07/2013] [Accepted: 08/19/2013] [Indexed: 02/07/2023]
Abstract
Various types of grafts have been traditionally used to restore damaged bones. In the late 1960s, a strong interest was raised in studying ceramics as potential bone grafts due to their biomechanical properties. A bit later, such synthetic biomaterials were called bioceramics. In principle, bioceramics can be prepared from diverse materials but this review is limited to calcium orthophosphate-based formulations only, which possess the specific advantages due to the chemical similarity to mammalian bones and teeth. During the past 40 years, there have been a number of important achievements in this field. Namely, after the initial development of bioceramics that was just tolerated in the physiological environment, an emphasis was shifted towards the formulations able to form direct chemical bonds with the adjacent bones. Afterwards, by the structural and compositional controls, it became possible to choose whether the calcium orthophosphate-based implants remain biologically stable once incorporated into the skeletal structure or whether they were resorbed over time. At the turn of the millennium, a new concept of regenerative bioceramics was developed and such formulations became an integrated part of the tissue engineering approach. Now calcium orthophosphate scaffolds are designed to induce bone formation and vascularization. These scaffolds are often porous and harbor different biomolecules and/or cells. Therefore, current biomedical applications of calcium orthophosphate bioceramics include bone augmentations, artificial bone grafts, maxillofacial reconstruction, spinal fusion, periodontal disease repairs and bone fillers after tumor surgery. Perspective future applications comprise drug delivery and tissue engineering purposes because calcium orthophosphates appear to be promising carriers of growth factors, bioactive peptides and various types of cells.
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163
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Vaquette C, Ivanovski S, Hamlet SM, Hutmacher DW. Effect of culture conditions and calcium phosphate coating on ectopic bone formation. Biomaterials 2013; 34:5538-51. [DOI: 10.1016/j.biomaterials.2013.03.088] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Accepted: 03/29/2013] [Indexed: 10/26/2022]
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164
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Viateau V, Manassero M, Sensébé L, Langonné A, Marchat D, Logeart-Avramoglou D, Petite H, Bensidhoum M. Comparative study of the osteogenic ability of four different ceramic constructs in an ectopic large animal model. J Tissue Eng Regen Med 2013; 10:E177-87. [DOI: 10.1002/term.1782] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Revised: 01/24/2013] [Accepted: 04/24/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Véronique Viateau
- Laboratory of Bioengineering and Biomechanics for Bone Articulation (B2OA - UMR CNRS 7052); University of Paris 7; PRES Paris Cité Paris France
- Ecole Nationale Vétérinaire d'Alfort; Maisons Alfort France
| | - Mathieu Manassero
- Laboratory of Bioengineering and Biomechanics for Bone Articulation (B2OA - UMR CNRS 7052); University of Paris 7; PRES Paris Cité Paris France
- Ecole Nationale Vétérinaire d'Alfort; Maisons Alfort France
| | - Luc Sensébé
- Etablissement Français du Sang Centre-atlantique; UMR5273 CNRS/UPS/EFS; Tours France
| | - Alain Langonné
- Etablissement Français du Sang Centre-atlantique; UMR5273 CNRS/UPS/EFS; Tours France
| | - David Marchat
- CIS; Ecole Nationale Supérieure des Mines de Saint-Etienne; Saint-Etienne France
| | - Delphine Logeart-Avramoglou
- Laboratory of Bioengineering and Biomechanics for Bone Articulation (B2OA - UMR CNRS 7052); University of Paris 7; PRES Paris Cité Paris France
| | - Hervé Petite
- Laboratory of Bioengineering and Biomechanics for Bone Articulation (B2OA - UMR CNRS 7052); University of Paris 7; PRES Paris Cité Paris France
| | - Morad Bensidhoum
- Laboratory of Bioengineering and Biomechanics for Bone Articulation (B2OA - UMR CNRS 7052); University of Paris 7; PRES Paris Cité Paris France
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165
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Alghamdi HS, Bosco R, van den Beucken JJ, Walboomers XF, Jansen JA. Osteogenicity of titanium implants coated with calcium phosphate or collagen type-I in osteoporotic rats. Biomaterials 2013; 34:3747-57. [DOI: 10.1016/j.biomaterials.2013.02.033] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Accepted: 02/12/2013] [Indexed: 02/07/2023]
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166
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Zhao XY, Zhu YJ, Qi C, Chen F, Lu BQ, Zhao J, Wu J. Hierarchical Hollow Hydroxyapatite Microspheres: Microwave-Assisted Rapid Synthesis by Using Pyridoxal-5′-Phosphate as a Phosphorus Source and Application in Drug Delivery. Chem Asian J 2013; 8:1313-20. [DOI: 10.1002/asia.201300142] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Indexed: 11/08/2022]
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167
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Eyckmans J, Roberts SJ, Bolander J, Schrooten J, Chen CS, Luyten FP. Mapping calcium phosphate activated gene networks as a strategy for targeted osteoinduction of human progenitors. Biomaterials 2013; 34:4612-21. [PMID: 23537666 DOI: 10.1016/j.biomaterials.2013.03.011] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Accepted: 03/05/2013] [Indexed: 01/07/2023]
Abstract
Although calcium phosphate-containing biomaterials are promising scaffolds for bone regenerative strategies, the osteoinductive capacity of such materials is poorly understood. In this study, we investigated whether endogenous mechanisms of in vivo calcium phosphate-driven, ectopic bone formation could be identified and used to induce enhanced differentiation in vitro of the same progenitor population. To accomplish this, human periosteum derived cells (hPDCs) were seeded on hydroxyapatite/collagen scaffolds (calcium phosphate rich matrix or CPRM), or on decalcified scaffolds (calcium phosphate depleted matrix or CPDM), followed by subcutaneous implantation in nude mice to trigger ectopic bone formation. In this system, osteoblast differentiation occurred in CPRM scaffolds, but not in CPDM scaffolds. Gene expression was assessed by human full-genome microarray at 20 h after seeding, and 2, 8 and 18 days after implantation. In both matrices, implantation of the cell constructs triggered a similar gene expression cascade, however, gene expression dynamics progressed faster in CPRM scaffolds than in CPDM scaffolds. The difference in gene expression dynamics was associated with differential activation of hub genes and molecular signaling pathways related to calcium signaling (CREB), inflammation (TNFα, NFkB, and IL6) and bone development (TGFβ, β-catenin, BMP, EGF, and ERK signaling). Starting from this set of pathways, a growth factor cocktail was developed that robustly enhanced osteogenesis in vitro and in vivo. Taken together, our data demonstrate that through the identification and subsequent stimulation of genes, proteins and signaling pathways associated with calcium phosphate mediated osteoinduction, a focused approach to develop targeted differentiation protocols in adult progenitor cells can be achieved.
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Affiliation(s)
- Jeroen Eyckmans
- Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, O&N1, Herestraat 49, PB 813, 3000 Leuven, Belgium
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D'Este M, Eglin D. Hydrogels in calcium phosphate moldable and injectable bone substitutes: Sticky excipients or advanced 3-D carriers? Acta Biomater 2013. [PMID: 23201020 DOI: 10.1016/j.actbio.2012.11.022] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The combination of hydrogels and calcium phosphate particles is emerging as a well-established trend for bone substitutes. Besides acting as binders for the inorganic phase, hydrogels within these hybrid materials can modulate cell colonization physically and biologically. The influence of hydrogels on the healing process can also be exploited through their capability to deliver drugs and cells for tissue engineering approaches. The aim of this review is to collect some recent progress in this field, with an emphasis on design aspects and possible future directions.
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Affiliation(s)
- M D'Este
- AO Research Institute Davos, Clavadelerstrasse 8, Davos, Switzerland.
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Trouillas M, Prat M, Doucet C, Ernou I, Laplace-Builhé C, Blancard PS, Holy X, Lataillade JJ. A new platelet cryoprecipitate glue promoting bone formation after ectopic mesenchymal stromal cell-loaded biomaterial implantation in nude mice. Stem Cell Res Ther 2013; 4:1. [PMID: 23290259 PMCID: PMC3706764 DOI: 10.1186/scrt149] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Accepted: 12/20/2012] [Indexed: 01/07/2023] Open
Abstract
Introduction This study investigated the promising effect of a new Platelet Glue obtained from Cryoprecipitation of Apheresis Platelet products (PGCAP) used in combination with Mesenchymal Stromal Cells (MSC) loaded on ceramic biomaterials to provide novel strategies enhancing bone repair. Methods PGCAP growth factor content was analyzed by ELISA and compared to other platelet and plasma-derived products. MSC loaded on biomaterials (65% hydroxyapatite/35% beta-TCP or 100% beta-TCP) were embedded in PGCAP and grown in presence or not of osteogenic induction medium for 21 days. Biomaterials were then implanted subcutaneously in immunodeficient mice for 28 days. Effect of PGCAP on MSC was evaluated in vitro by proliferation and osteoblastic gene expression analysis and in vivo by histology and immunohistochemistry. Results We showed that PGCAP, compared to other platelet-derived products, allowed concentrating large amount of growth factors and cytokines which promoted MSC and osteoprogenitor proliferation. Next, we found that PGCAP improves the proliferation of MSC and osteogenic-induced MSC. Furthermore, we demonstrated that PGCAP up-regulates the mRNA expression of osteogenic markers (Collagen type I, Osteonectin, Osteopontin and Runx2). In vivo, type I collagen expressed in ectopic bone-like tissue was highly enhanced in biomaterials embedded in PGCAP in the absence of osteogenic pre-induction. Better results were obtained with 65% hydroxyapatite/35% beta-TCP biomaterials as compared to 100% beta-TCP. Conclusions We have demonstrated that PGCAP is able to enhance in vitro MSC proliferation, osteoblastic differentiation and in vivo bone formation in the absence of osteogenic pre-induction. This clinically adaptable platelet glue could be of interest for improving bone repair.
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