51
|
Nakamura M, Oyane A. Physicochemical fabrication of calcium phosphate-based thin layers and nanospheres using laser processing in solutions. J Mater Chem B 2016; 4:6289-6301. [DOI: 10.1039/c6tb01362g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We achieved simple and rapid fabrication of calcium phosphate (CaP)-based thin layers and nanospheres by laser processing in supersaturated solutions.
Collapse
Affiliation(s)
- Maki Nakamura
- Nanomaterials Research Institute
- National Institute of Advanced Industrial Science and Technology (AIST)
- Central 5
- Tsukuba
- Japan
| | - Ayako Oyane
- Nanomaterials Research Institute
- National Institute of Advanced Industrial Science and Technology (AIST)
- Central 5
- Tsukuba
- Japan
| |
Collapse
|
52
|
Liu N, Wang Z. Sequential delivery of BMP-7 and IGF-I to enhance the osteoinductive property of deproteinized bovine bone. RSC Adv 2016. [DOI: 10.1039/c6ra04336d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Calcium phosphate coated deproteinized bovine bone with sequential delivery of BMP-7 and IGF-I has osteoinductive property to promote bone regeneration.
Collapse
Affiliation(s)
- Ning Liu
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration
- Department of Oral Implant
- School of Stomatology
- Tongji University
- Shanghai
| | - Zuolin Wang
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration
- Department of Oral Implant
- School of Stomatology
- Tongji University
- Shanghai
| |
Collapse
|
53
|
Nune KC, Kumar A, Misra RDK, Li SJ, Hao YL, Yang R. Osteoblast functions in functionally graded Ti-6Al-4 V mesh structures. J Biomater Appl 2015; 30:1182-204. [PMID: 26637443 DOI: 10.1177/0885328215617868] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We describe here the combined efforts of engineering and biological sciences as a systemic approach to fundamentally elucidate osteoblast functions in functionally graded Ti-6Al-4 V mesh structures in relation to uniform/monolithic mesh arrays. First, the interconnecting porous architecture of functionally graded mesh arrays was conducive to cellular functions including attachment, proliferation, and mineralization. The underlying reason is that the graded fabricated structure with cells seeded from the large pore size side provided a channel for efficient transfer of nutrients to other end of the structure (small pore size), leading to the generation of mineralized extracellular matrix by differentiating pre-osteoblasts. Second, a comparative and parametric study indicated that gradient mesh structure had a pronounced effect on cell adhesion and mineralization, and strongly influenced the proliferation phase. High intensity and near-uniform distribution of proteins (actin and vinculin) on struts of the gradient mesh structure (cells seeded from large pore side) implied signal transduction during cell adhesion and was responsible for superior cellular activity, in comparison to the uniform mesh structure and non-porous titanium alloy. Cells adhered to the mesh struts by forming a sheet, bridging the pores through numerous cytoplasmic extensions, in the case of porous mesh structures. Intercellular interaction in porous structures provided a pathway for cells to communicate and mature to a differentiated phenotype. Furthermore, the capability of cells to migrate through the interconnecting porous architecture on mesh structures led to colonization of the entire structure. Cells were embedded layer-by-layer in the extracellular matrix as the matrix mineralized. The outcomes of the study are expected to address challenges associated with the treatment of segmental bone defects and bone-remodeling through favorable modulation of cellular response. Moreover, the study provides a foundation for a new branch of functionally graded materials with interconnected porous architecture.
Collapse
Affiliation(s)
- K C Nune
- Biomedical Engineering The University of Texas at El Paso, 500 W. University Avenue, El Paso, Texas, USA
| | - A Kumar
- Biomedical Engineering The University of Texas at El Paso, 500 W. University Avenue, El Paso, Texas, USA
| | - R D K Misra
- Biomedical Engineering The University of Texas at El Paso, 500 W. University Avenue, El Paso, Texas, USA
| | - S J Li
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, China
| | - Y L Hao
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, China
| | - R Yang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, China
| |
Collapse
|
54
|
Nune KC, Kumar A, Murr LE, Misra RDK. Interplay between self-assembled structure of bone morphogenetic protein-2 (BMP-2) and osteoblast functions in three-dimensional titanium alloy scaffolds: Stimulation of osteogenic activity. J Biomed Mater Res A 2015; 104:517-32. [PMID: 26475990 DOI: 10.1002/jbm.a.35592] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 10/09/2015] [Accepted: 10/15/2015] [Indexed: 12/18/2022]
Abstract
Three-dimensional cellular scaffolds are receiving significant attention in bone tissue engineering to treat segmental bone defects. However, there are indications of lack of significant osteoinductive ability of three-dimensional cellular scaffolds. In this regard, the objective of the study is to elucidate the interplay between bone morphogenetic protein (BMP-2) and osteoblast functions on 3D mesh structures with different porosities and pore size that were fabricated by electron beam melting. Self-assembled dendritic microstructure with interconnected cellular-type morphology of BMP-2 on 3D scaffolds stimulated osteoblast functions including adhesion, proliferation, and mineralization, with prominent effect on 2-mm mesh. Furthermore, immunofluorescence studies demonstrated higher density and viability of osteoblasts on lower porosity mesh structure (2 mm) as compared to 3- and 4-mm mesh structures. Enhanced filopodia cellular extensions with extensive cell spreading was observed on BMP-2 treated mesh structures, a behavior that is attributed to the unique self-assembled structure of BMP-2 that effectively communicates with the cells. The study underscores the potential of BMP-2 in imparting osteoinductive capability to the 3D printed scaffolds.
Collapse
Affiliation(s)
- K C Nune
- Biomaterials and Biomedical Engineering Research Laboratory, Department of Metallurgical, Materials, and Biomedical Engineering, University of Texas at El Paso, 500 W. University Avenue, El Paso, Texas, 79968
| | - A Kumar
- Biomaterials and Biomedical Engineering Research Laboratory, Department of Metallurgical, Materials, and Biomedical Engineering, University of Texas at El Paso, 500 W. University Avenue, El Paso, Texas, 79968
| | - L E Murr
- Biomaterials and Biomedical Engineering Research Laboratory, Department of Metallurgical, Materials, and Biomedical Engineering, University of Texas at El Paso, 500 W. University Avenue, El Paso, Texas, 79968
| | - R D K Misra
- Biomaterials and Biomedical Engineering Research Laboratory, Department of Metallurgical, Materials, and Biomedical Engineering, University of Texas at El Paso, 500 W. University Avenue, El Paso, Texas, 79968
| |
Collapse
|
55
|
Yu X, Tang X, Gohil SV, Laurencin CT. Biomaterials for Bone Regenerative Engineering. Adv Healthc Mater 2015; 4:1268-85. [PMID: 25846250 PMCID: PMC4507442 DOI: 10.1002/adhm.201400760] [Citation(s) in RCA: 208] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Revised: 02/21/2015] [Indexed: 01/08/2023]
Abstract
Strategies for bone tissue regeneration have been continuously evolving for the last 25 years since the introduction of the "tissue engineering" concept. The convergence of the life, physical, and engineering sciences has brought in several advanced technologies available to tissue engineers and scientists. This resulted in the creation of a new multidisciplinary field termed as "regenerative engineering". In this article, the role of biomaterials in bone regenerative engineering is systematically reviewed to elucidate the new design criteria for the next generation of biomaterials for bone regenerative engineering. The exemplary design of biomaterials harnessing various materials characteristics towards successful bone defect repair and regeneration is highlighted. Particular attention is given to the attempts of incorporating advanced materials science, stem cell technologies, and developmental biology into biomaterials design to engineer and develop the next generation bone grafts.
Collapse
Affiliation(s)
- Xiaohua Yu
- Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
- The Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Xiaoyan Tang
- Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06268
| | - Shalini V. Gohil
- Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Cato T. Laurencin
- Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
- The Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06268, USA
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, CT 06030, USA
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06268
| |
Collapse
|
56
|
Guo Q, Mather JP, Yang P, Boden M, Mather PT. Fabrication of Polymeric Coatings with Controlled Microtopographies Using an Electrospraying Technique. PLoS One 2015; 10:e0129960. [PMID: 26090663 PMCID: PMC4475032 DOI: 10.1371/journal.pone.0129960] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 05/13/2015] [Indexed: 11/27/2022] Open
Abstract
Surface topography of medical implants provides an important biophysical cue on guiding cellular functions at the cell-implant interface. However, few techniques are available to produce polymeric coatings with controlled microtopographies onto surgical implants, especially onto implant devices of small dimension and with complex structures such as drug-eluting stents. Therefore, the main objective of this study was to develop a new strategy to fabricate polymeric coatings using an electrospraying technique based on the uniqueness of this technique in that it can be used to produce a mist of charged droplets with a precise control of their shape and dimension. We hypothesized that this technique would allow facile manipulation of coating morphology by controlling the shape and dimension of electrosprayed droplets. More specifically, we employed the electrospraying technique to coat a layer of biodegradable polyurethane with tailored microtopographies onto commercial coronary stents. The topography of such stent coatings was modulated by controlling the ratio of round to stretched droplets or the ratio of round to crumped droplets under high electric field before deposition. The shape of electrosprayed droplets was governed by the stability of these charged droplets right after ejection or during their flight in the air. Using the electrospraying technique, we achieved conformal polymeric coatings with tailored microtopographies onto conductive surgical implants. The approach offers potential for controlling the surface topography of surgical implant devices to modulate their integration with surrounding tissues.
Collapse
Affiliation(s)
- Qiongyu Guo
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio, United States of America
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, New York, United States of America
| | - Jason P. Mather
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, New York, United States of America
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, New York, United States of America
| | - Pine Yang
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, New York, United States of America
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, New York, United States of America
| | - Mark Boden
- Boston Scientific Corporation, Marlborough, Massachusetts, United States of America
| | - Patrick T. Mather
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, New York, United States of America
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, New York, United States of America
| |
Collapse
|
57
|
Calcium orthophosphate deposits: Preparation, properties and biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 55:272-326. [PMID: 26117762 DOI: 10.1016/j.msec.2015.05.033] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 03/21/2015] [Accepted: 05/08/2015] [Indexed: 01/12/2023]
Abstract
Since various interactions among cells, surrounding tissues and implanted biomaterials always occur at their interfaces, the surface properties of potential implants appear to be of paramount importance for the clinical success. In view of the fact that a limited amount of materials appear to be tolerated by living organisms, a special discipline called surface engineering was developed to initiate the desirable changes to the exterior properties of various materials but still maintaining their useful bulk performances. In 1975, this approach resulted in the introduction of a special class of artificial bone grafts, composed of various mechanically stable (consequently, suitable for load bearing applications) implantable biomaterials and/or bio-devices covered by calcium orthophosphates (CaPO4) to both improve biocompatibility and provide an adequate bonding to the adjacent bones. Over 5000 publications on this topic were published since then. Therefore, a thorough analysis of the available literature has been performed and about 50 (this number is doubled, if all possible modifications are counted) deposition techniques of CaPO4 have been revealed, systematized and described. These CaPO4 deposits (coatings, films and layers) used to improve the surface properties of various types of artificial implants are the topic of this review.
Collapse
|
58
|
|
59
|
Dlaska CE, Andersson G, Brittberg M, Suedkamp NP, Raschke MJ, Schuetz MA. Clinical Translation in Tissue Engineering—The Surgeon’s View. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/s40610-015-0013-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
60
|
Yu X, Suárez-González D, Khalil AS, Murphy WL. How does the pathophysiological context influence delivery of bone growth factors? Adv Drug Deliv Rev 2015; 84:68-84. [PMID: 25453269 PMCID: PMC4401584 DOI: 10.1016/j.addr.2014.10.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 08/29/2014] [Accepted: 10/07/2014] [Indexed: 02/08/2023]
Abstract
"Orthobiologics" represents an important category of therapeutics for the regeneration of bone defects caused by injuries or diseases, and bone growth factors are a particularly rapidly growing sub-category. Clinical application of bone growth factors has accelerated in the last two decades with the introduction of BMPs into clinical bone repair. Optimal use of growth factor-mediated treatments heavily relies on controlled delivery, which can substantially influence the local growth factor dose, release kinetics, and biological activity. The characteristics of the surrounding environment, or "context", during delivery can dictate growth factor loading efficiency, release and biological activity. This review discusses the influence of the surrounding environment on therapeutic delivery of bone growth factors. We specifically focus on pathophysiological components, including soluble components and cells, and how they can actively influence the therapeutic delivery and perhaps efficacy of bone growth factors.
Collapse
Affiliation(s)
- Xiaohua Yu
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Darilis Suárez-González
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Andrew S Khalil
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - William L Murphy
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, 53705, USA.
| |
Collapse
|
61
|
Saito E, Suarez-Gonzalez D, Murphy WL, Hollister SJ. Biomineral coating increases bone formation by ex vivo BMP-7 gene therapy in rapid prototyped poly(L-lactic acid) (PLLA) and poly(ε-caprolactone) (PCL) porous scaffolds. Adv Healthc Mater 2015; 4:621-32. [PMID: 25515846 DOI: 10.1002/adhm.201400424] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Indexed: 11/12/2022]
Abstract
Porousbiodegradable polymer scaffolds are widely utilized for bone tissue engineering, but are not osteoconductive like calcium phosphate scaffolds. We combine indirect solid freeform fabrication (SFF), ex vivo gene therapy, with biomineral coating to compare the effect of biomineral coating on bone regeneration for Poly (L-lactic acid) (PLLA) and Poly (ε-caprolactone) (PCL) scaffolds with the same porous architecture. Scanning electron microscope (SEM) and micro-computed tomography (μ-CT) demonstrate PLLA and PCL scaffolds have the same porous architecture and are completely coated. All scaffolds are seeded with human gingival fibroblasts (HGF) transduced with adenovirus encoded with either bone morphogenetic protein 7 (BMP-7) or green fluorescent protein (GFP), and implanted into mice subcutaneously for 3 and 10 weeks. Only scaffolds with BMP-7 transduced HGFs show mineralized tissue formation. At 3 weeks some blood vessel-like structures are observed in coated PLLA and PCL scaffolds, but there is no significant difference in bone ingrowth between the coated and uncoated scaffolds for either PLLA or PCL. At 10 weeks, however, coated scaffolds (both PLLA and PCL) have significantly more bone ingrowth than uncoated scaffolds, which have more fibrous tissue. Coated PLLA scaffolds have improved mechanical properties compared with uncoated PLLA scaffolds due to increased bone ingrowth.
Collapse
Affiliation(s)
- Eiji Saito
- Department of Biomedical Engineering; 1101 Beal Ave. University of Michigan; Ann Arbor MI 48109-2099 USA
| | | | - William L. Murphy
- Materials Science Program; University of Wisconsin; Madison WI 53706 USA
- Department of Biomedical Engineering; University of Wisconsin; Madison WI 53706 USA
- Department of Orthopedics and Rehabilitation; University of Wisconsin; Madison WI 53706 USA
| | - Scott J. Hollister
- Department of Biomedical Engineering; 1101 Beal Ave. University of Michigan; Ann Arbor MI 48109-2099 USA
- Department of Mechanical Engineering; University of Michigan; Ann Arbor MI 48109-2125 USA
- Department of Surgery; University of Michigan; Ann Arbor MI 48109-032 USA
| |
Collapse
|
62
|
Lin X, de Groot K, Wang D, Hu Q, Wismeijer D, Liu Y. A review paper on biomimetic calcium phosphate coatings. Open Biomed Eng J 2015; 9:56-64. [PMID: 25893016 PMCID: PMC4391212 DOI: 10.2174/1874120701509010056] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 05/31/2014] [Accepted: 08/30/2014] [Indexed: 12/14/2022] Open
Abstract
Biomimetic calcium phosphate coatings have been developed for bone regeneration and repair because of their biocompatibility, osteoconductivity, and easy preparation. They can be rendered osteoinductive by incorporating an osteogenic agent, such as bone morphogenetic protein 2 (BMP-2), into the crystalline lattice work in physiological situations. The biomimetic calcium phosphate coating enables a controlled, slow and local release of BMP-2 when it undergoes cell mediated coating degradation induced by multinuclear cells, such as osteoclasts and foreign body giant cells, which mimics a physiologically similar release mode, to achieve sustained ectopic or orthotopic bone formation. Therefore, biomimetic calcium phosphate coatings are considered to be a promising delivery vehicle for osteogenic agents. In this review, we present an overview of biomimetic calcium phosphate coatings including their preparation techniques, physico-chemical properties, potential as drug carrier, and their pre-clinical application both in ectopic and orthotopic animal models. We briefly review some features of hydroxyapatite coatings and their clinical applications to gain insight into the clinical applications of biomimetic calcium phosphate coatings in the near future.
Collapse
Affiliation(s)
- X Lin
- Department of Oral Implantology, Academic Centre of Dentistry Amsterdam (ACTA), VU University and University of Amsterdam, Amsterdam, The Netherlands ; Department of Orthodontics, Affiliated Stomatological Hospital of Medical School, Nanjing University, Nanjing, China
| | - K de Groot
- Department of Oral Implantology, Academic Centre of Dentistry Amsterdam (ACTA), VU University and University of Amsterdam, Amsterdam, The Netherlands
| | - D Wang
- Department of Oral Implantology, Academic Centre of Dentistry Amsterdam (ACTA), VU University and University of Amsterdam, Amsterdam, The Netherlands
| | - Q Hu
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Medical School, Nanjing University, Nanjing, China
| | - D Wismeijer
- Department of Oral Implantology, Academic Centre of Dentistry Amsterdam (ACTA), VU University and University of Amsterdam, Amsterdam, The Netherlands
| | - Y Liu
- Department of Oral Implantology, Academic Centre of Dentistry Amsterdam (ACTA), VU University and University of Amsterdam, Amsterdam, The Netherlands
| |
Collapse
|
63
|
Sarker B, Hum J, Nazhat SN, Boccaccini AR. Combining collagen and bioactive glasses for bone tissue engineering: a review. Adv Healthc Mater 2015; 4:176-94. [PMID: 25116596 DOI: 10.1002/adhm.201400302] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 07/07/2014] [Indexed: 01/07/2023]
Abstract
Collagen (COL), the most abundant protein in mammals, offers a wide range of attractive properties for biomedical applications which are the result of its biocompatibility and high affinity to water. However, due to the relative low mechanical properties of COL its applications are still limited. To tackle this disadvantage of COL, especially in the field of bone tissue engineering, COL can be combined with bioactive inorganic materials in a variety of composite systems. One of such systems is the collagen-bioactive glass (COL-BG) composite family, which is the theme of this Review. BG fillers can increase compressive strength and stiffness of COL-based structures. This article reviews the relevant literature published in the last 15 years discussing the fabrication of a variety of COL-BG composites. In vitro cell studies have demonstrated the osteogenic, odontogenic, and angiogenic potential of these composite systems, which has been confirmed by stimulating specific biochemical indicators of relevant cells. Bony integration and connective tissue vessel formation have also been studied by implantation of the composites in vivo. Areas of future research in the field of COL-BG systems, based on current challenges, and gaps in knowledge are highlighted.
Collapse
Affiliation(s)
- Bapi Sarker
- Institute of Biomaterials; Department of Materials Science and Engineering; University of Erlangen-Nuremberg; Cauerstrasse 6 91058 Erlangen Germany
| | - Jasmin Hum
- Institute of Biomaterials; Department of Materials Science and Engineering; University of Erlangen-Nuremberg; Cauerstrasse 6 91058 Erlangen Germany
| | - Showan N. Nazhat
- Department of Mining and Materials Engineering; McGill University; Montreal QC H3A 0C5 Canada
| | - Aldo R. Boccaccini
- Institute of Biomaterials; Department of Materials Science and Engineering; University of Erlangen-Nuremberg; Cauerstrasse 6 91058 Erlangen Germany
| |
Collapse
|
64
|
Yao AH, Li XD, Xiong L, Zeng JH, Xu J, Wang DP. Hollow hydroxyapatite microspheres/chitosan composite as a sustained delivery vehicle for rhBMP-2 in the treatment of bone defects. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:5336. [PMID: 25578692 DOI: 10.1007/s10856-014-5336-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 07/31/2014] [Indexed: 06/04/2023]
Abstract
Composite scaffold comprised of hollow hydroxyapatite (HA) and chitosan (designated hHA/CS) was prepared as a delivery vehicle for recombinating human bone morphogenetic protein-2 (rhBMP-2). The in vitro and in vivo biological activities of rhBMP2 released from the composite scaffold were then investigated. The rhBMP-2 was firstly loaded into the hollow HA microspheres, and then the rhBMP2-loaded HA microspheres were further incorporated into the chitosan matrix. The chitosan not only served to bind the HA microspheres together and kept them at the implant site, but also effectively modified the release behavior of rhBMP-2. The in vitro release and bioactivity analysis confirmed that the rhBMP2 could be loaded and released from the composite scaffolds in bioactive form. In addition, the composite scaffolds significantly reduced the initial burst release of rhBMP2, and thus providing prolonged period of time (as long as 60 days) compared with CS scaffolds. In vivo bone regenerative potential of the rhBMP2-loaded composite scaffolds was evaluated in a rabbit radius defect model. The results revealed that the rate of new bone formation in the rhBMP2-loaded hHA/CS group was higher than that in both negative control and rhBMP2-loaded CS group. These observations suggest that the hHA/CS composite scaffold would be effective and feasible as a delivery vehicle for growth factors in bone regeneration and repair.
Collapse
Affiliation(s)
- Ai-Hua Yao
- School of Materials Science and Engineering, Tongji University, Shanghai, 200092, People's Republic of China,
| | | | | | | | | | | |
Collapse
|
65
|
Beke S, Barenghi R, Farkas B, Romano I, Kőrösi L, Scaglione S, Brandi F. Improved cell activity on biodegradable photopolymer scaffolds using titanate nanotube coatings. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 44:38-43. [DOI: 10.1016/j.msec.2014.07.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 03/30/2014] [Accepted: 07/01/2014] [Indexed: 10/25/2022]
|
66
|
Affiliation(s)
- Tie Liu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Research Institute MOVE, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, The Netherlands; Department of Oral implantology, Hospital/School of Stomatology, Zhejiang University, Yan'an Road 395, 310006, Hangzhou, Zhejiang, China
| | - Gang Wu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Research Institute MOVE, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, The Netherlands
| | - Zhiyuan Gu
- School of Stomatology/Dental Clinic, Zhejiang Chinese Medical University, Mailbox 97, Binwen Road 548, Binjiang District, 310053, Hangzhou, Zhejiang, China
| | - Daniel Wismeijer
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Research Institute MOVE, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, The Netherlands
| | - Yuelian Liu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Research Institute MOVE, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, The Netherlands.
| |
Collapse
|
67
|
Effect of Strontium Enhanced Calcium Phosphate Coating on <i>In Vitro</i> Behavior of Human Mesenchymal Stem Cell (hMSC). JOURNAL OF BIOMIMETICS BIOMATERIALS AND BIOMEDICAL ENGINEERING 2014. [DOI: 10.4028/www.scientific.net/jbbbe.21.35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Calcium phosphate is a widely used material as coating for metallic implants. This research describes a biomimetic coating techniques based on deposition of calcium phosphate films on a Ti6Al4V plates that was used to study the effect of strontium additive on the behavior of hMSCs. In this study, strontium additive was homogenously deposited onto calcium phosphate films on a Ti6AlV plates by using a biomimetic techniques. Strontium affected composition and morphology of calcium phosphate deposited on a Ti6Al4V plates to a varying degree, according to concentration of solutions used. The effect of strontium additive on proliferation and differentiation of hMSCs depended on the solution and concentration tested. In general, all individual three coatings showed decreased hMSCs proliferation. Strontium additive demonstrated a significant increase in differentiation into osteogenic lineage when compared with the control and calcium phosphate films without strontium additive. However, no cytotoxic effect of strontium additive in the concentrations tested was detected. The Fourier transform infrared spectra showed that this new coating closely resembles bone mineral. The techniques illustrated in this study mimics bone mineral containing strontium additive, making it constructive for studying basic processes of in vitro bone formation. The results showed in this study can be used for changing bone graft substitutes by addition of strontium additive on implants in order to affect their performance in bone repair and regeneration. Also, the system can aid rapid bone formation around the implant, reducing therewith the patient’s recovery time after surgery.
Collapse
|
68
|
Han L, Lin H, Lu X, Zhi W, Wang K, Meng F, Jiang O. BMP2-encapsulated chitosan coatings on functionalized Ti surfaces and their performance in vitro and in vivo. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 40:1-8. [DOI: 10.1016/j.msec.2014.03.043] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2013] [Revised: 02/17/2014] [Accepted: 03/18/2014] [Indexed: 01/01/2023]
|
69
|
Tissue-engineered bone constructed in a bioreactor for repairing critical-sized bone defects in sheep. INTERNATIONAL ORTHOPAEDICS 2014; 38:2399-406. [PMID: 24916136 DOI: 10.1007/s00264-014-2389-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 05/18/2014] [Indexed: 12/21/2022]
Abstract
PURPOSE Repair of bone defects, particularly critical-sized bone defects, is a considerable challenge in orthopaedics. Tissue-engineered bones provide an effective approach. However, previous studies mainly focused on the repair of bone defects in small animals. For better clinical application, repairing critical-sized bone defects in large animals must be studied. This study investigated the effect of a tissue-engineered bone for repairing critical-sized bone defect in sheep. METHODS A tissue-engineered bone was constructed by culturing bone marrow mesenchymal-stem-cell-derived osteoblast cells seeded in a porous β-tricalcium phosphate ceramic (β-TCP) scaffold in a perfusion bioreactor. A critical-sized bone defect in sheep was repaired with the tissue-engineered bone. At the eighth and 16th week after the implantation of the tissue-engineered bone, X-ray examination and histological analysis were performed to evaluate the defect. The bone defect with only the β-TCP scaffold served as the control. RESULT X-ray showed that the bone defect was successfully repaired 16 weeks after implantation of the tissue-engineered bone; histological sections showed that a sufficient volume of new bones formed in β-TCP 16 weeks after implantation. Eight and 16 weeks after implantation, the volume of new bones that formed in the tissue-engineered bone group was more than that in the β-TCP scaffold group (P < 0.05). CONCLUSION Tissue-engineered bone improved osteogenesis in vivo and enhanced the ability to repair critical-sized bone defects in large animals.
Collapse
|
70
|
Liu Y, Zhang X, Liu Y, Jin X, Fan C, Ye H, Ou M, Lv L, Wu G, Zhou Y. Bi-functionalization of a calcium phosphate-coated titanium surface with slow-release simvastatin and metronidazole to provide antibacterial activities and pro-osteodifferentiation capabilities. PLoS One 2014; 9:e97741. [PMID: 24844416 PMCID: PMC4028224 DOI: 10.1371/journal.pone.0097741] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Accepted: 04/24/2014] [Indexed: 12/23/2022] Open
Abstract
Coating the surface of titanium implants or other bone graft substitute materials with calcium phosphate (Ca-P) crystals is an effective way to enhance the osteoconduction of the implants. Ca-P coating alone cannot confer pro-osteodifferentiation and antibacterial capabilities on implants; however, it can serve as a carrier for biological agents which could improve the performance of implants and bone substitutes. Here, we constructed a novel, bi-functional Ca-P coating with combined pro-osteodifferentiation and antibacterial capabilities. Different concentrations of metronidazole (MNZ) and simvastatin (SIM) were integrated into biomimetic Ca-P coatings on the surface of titanium disks. The biological effects of this bi-functional biomimetic coating on human bone marrow mesenchymal stem cells (hBMMSCs), human adipose derived stromal cells (hASCs), and Porphyromonas gingivalis were assessed in vitro. We observed that Ca-P coatings loaded with both SIM and MNZ display favorable release kinetics without affecting cell proliferation or attachment. In the inhibition zone test, we found that the bi-functional coating showed lasting antibacterial effects when incubated with Porphyromonas gingivalis for 2 and 4 days. Moreover, the osteodifferentiation of hBMMSCs and hASCs were increased when cultured on this bi-functional coating for 7 and 14 days. Both drugs were loaded onto the Ca-P coating at specific concentrations (10−5 M SIM; 10−2 M MNZ) to achieve optimal release kinetics. Considering the safety, stability and low cost of SIM and MNZ, this novel bi-functional Ca-P coating technique represents a promising method to improve the performance of metal implants or other bone substitute materials, and can theoretically be easily translated to clinical applications.
Collapse
Affiliation(s)
- Yunsong Liu
- Department of Prosthodontics, School and Hospital of Stomatology, Peking University, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, China
| | - Xiao Zhang
- Department of Prosthodontics, School and Hospital of Stomatology, Peking University, Beijing, China
| | - Yang Liu
- Department of Orthodontics, School and Hospital of Stomatology, Peking University, Beijing, China
| | - Xiaoxiao Jin
- Department of Prosthodontics, School and Hospital of Stomatology, Peking University, Beijing, China
| | - Cong Fan
- Department of Prosthodontics, School and Hospital of Stomatology, Peking University, Beijing, China
| | - Hongqiang Ye
- Department of Prosthodontics, School and Hospital of Stomatology, Peking University, Beijing, China
| | - Meng’en Ou
- Department of Prosthodontics, School and Hospital of Stomatology, Peking University, Beijing, China
| | - Longwei Lv
- Department of Prosthodontics, School and Hospital of Stomatology, Peking University, Beijing, China
| | - Gang Wu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentristry Amsterdam (ACTA), Research Institute MOVE, VU University and University of Amsterdam, Amsterdam, The Netherlands
| | - Yongsheng Zhou
- Department of Prosthodontics, School and Hospital of Stomatology, Peking University, Beijing, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, China
- Central Laboratory, School and Hospital of Stomatology, Peking University, Beijing, China
- * E-mail:
| |
Collapse
|
71
|
Akbarzadeh R, Yousefi AM. Effects of processing parameters in thermally induced phase separation technique on porous architecture of scaffolds for bone tissue engineering. J Biomed Mater Res B Appl Biomater 2014; 102:1304-15. [PMID: 24425207 DOI: 10.1002/jbm.b.33101] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 11/16/2013] [Accepted: 12/17/2013] [Indexed: 12/22/2022]
Abstract
Tissue engineering makes use of 3D scaffolds to sustain three-dimensional growth of cells and guide new tissue formation. To meet the multiple requirements for regeneration of biological tissues and organs, a wide range of scaffold fabrication techniques have been developed, aiming to produce porous constructs with the desired pore size range and pore morphology. Among different scaffold fabrication techniques, thermally induced phase separation (TIPS) method has been widely used in recent years because of its potential to produce highly porous scaffolds with interconnected pore morphology. The scaffold architecture can be closely controlled by adjusting the process parameters, including polymer type and concentration, solvent composition, quenching temperature and time, coarsening process, and incorporation of inorganic particles. The objective of this review is to provide information pertaining to the effect of these parameters on the architecture and properties of the scaffolds fabricated by the TIPS technique.
Collapse
Affiliation(s)
- Rosa Akbarzadeh
- Department of Chemical Paper and Biomedical Engineering, Miami University, Oxford, Ohio, 45056
| | | |
Collapse
|
72
|
Peng H, Liu X, Wang R, Jia F, Dong L, Wang Q. Emerging nanostructured materials for musculoskeletal tissue engineering. J Mater Chem B 2014; 2:6435-6461. [DOI: 10.1039/c4tb00344f] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review summarizes the recent developments in the preparation and applications of nanostructured materials for musculoskeletal tissue engineering.
Collapse
Affiliation(s)
- Haisheng Peng
- Department of Chemical and Biological Engineering
- Iowa State University
- Ames, USA
- Department of Pharmaceutics
- Daqing Campus
| | - Xunpei Liu
- Department of Chemical and Biological Engineering
- Iowa State University
- Ames, USA
| | - Ran Wang
- Department of Pharmaceutics
- Daqing Campus
- Harbin Medical University
- Daqing, China
| | - Feng Jia
- Department of Chemical and Biological Engineering
- Iowa State University
- Ames, USA
| | - Liang Dong
- Department of Electrical and Computer Engineering
- Iowa State University
- Ames, USA
| | - Qun Wang
- Department of Chemical and Biological Engineering
- Iowa State University
- Ames, USA
- Department of Civil, Construction and Environmental Engineering
- Iowa State University
| |
Collapse
|
73
|
He C, Jin X, Ma PX. Calcium phosphate deposition rate, structure and osteoconductivity on electrospun poly(l-lactic acid) matrix using electrodeposition or simulated body fluid incubation. Acta Biomater 2014; 10:419-27. [PMID: 24012605 DOI: 10.1016/j.actbio.2013.08.041] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 08/22/2013] [Accepted: 08/28/2013] [Indexed: 01/05/2023]
Abstract
Mineralized nanofibrous scaffolds have been proposed as promising scaffolds for bone regeneration due to their ability to mimic both nanoscale architecture and chemical composition of natural bone extracellular matrix. In this study, a novel electrodeposition method was compared with an extensively explored simulated body fluid (SBF) incubation method in terms of the deposition rate, chemical composition and morphology of calcium phosphate formed on electrospun fibrous thin matrices with a fiber diameter in the range ~200-1400 nm prepared using 6, 8, 10 and 12 wt.% poly(l-lactic acid) (PLLA) solutions in a mixture of dichloromethane and acetone (2:1 in volume). The effects of the surface modification using the two mineralization techniques on osteoblastic cell (MC3T3-E1) proliferation and differentiation were also examined. It was found that electrodeposition was two to three orders of magnitude faster than the SBF method in mineralizing the fibrous matrices, reducing the mineralization time from ~2 weeks to 1h to achieve the same amounts of mineralization. The mineralization rate also varied with the fiber diameter but in opposite directions between the two mineralization methods. As a general trend, the increase of fiber diameter resulted in a faster mineralization rate for the electrodeposition method but a slower mineralization rate for the SBF incubation method. Using the electrodeposition method, one can control the chemical composition and morphology of the calcium phosphate by varying the electric deposition potential and electrolyte temperature to tune the mixture of dicalcium phosphate dihydrate and hydroxyapatite (HAp). Using the SBF method, one can only obtain a low crystallinity HAp. The mineralized electrospun PLLA fibrous matrices from either method similarly facilitate the proliferation and osteogenic differentiation of preosteoblastic MC3T3-E1 cells as compared to neat PLLA matrices. Therefore, the electrodeposition method can be utilized as a fast and versatile technique to fabricate mineralized nanofibrous scaffolds for bone tissue engineering.
Collapse
|
74
|
Liu T, Wu G, Zheng Y, Wismeijer D, Everts V, Liu Y. Cell-mediated BMP-2 release from a novel dual-drug delivery system promotes bone formation. Clin Oral Implants Res 2013; 25:1412-21. [DOI: 10.1111/clr.12283] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tie Liu
- Department of Oral Implantology and Prosthetic Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); MOVE Research Institute; University of Amsterdam and VU University Amsterdam; Amsterdam the Netherlands
| | - Gang Wu
- Department of Oral Implantology and Prosthetic Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); MOVE Research Institute; University of Amsterdam and VU University Amsterdam; Amsterdam the Netherlands
| | - Yuanna Zheng
- Department of Oral Implantology and Prosthetic Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); MOVE Research Institute; University of Amsterdam and VU University Amsterdam; Amsterdam the Netherlands
- School of Stomatology/Dental Clinic; Zhejiang Chinese Medical University; Hangzhou China
| | - Daniel Wismeijer
- Department of Oral Implantology and Prosthetic Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); MOVE Research Institute; University of Amsterdam and VU University Amsterdam; Amsterdam the Netherlands
| | - Vincent Everts
- Department of Oral Cell Biology; Academic Centre for Dentistry Amsterdam (ACTA); MOVE Research Institute; University of Amsterdam and VU University Amsterdam; Amsterdam the Netherlands
| | - Yuelian Liu
- Department of Oral Implantology and Prosthetic Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); MOVE Research Institute; University of Amsterdam and VU University Amsterdam; Amsterdam the Netherlands
| |
Collapse
|
75
|
Liu T, Wu G, Wismeijer D, Gu Z, Liu Y. Deproteinized bovine bone functionalized with the slow delivery of BMP-2 for the repair of critical-sized bone defects in sheep. Bone 2013; 56:110-8. [PMID: 23732874 DOI: 10.1016/j.bone.2013.05.017] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 05/22/2013] [Accepted: 05/24/2013] [Indexed: 10/26/2022]
Abstract
As an alternative to an autologous bone graft, deproteinized bovine bone (DBB) is widely used in the clinical dentistry. Although DBB provides an osteoconductive scaffold, it is not capable of enhancing bone regeneration because it is not osteoinductive. In order to render DBB osteoinductive, bone morphogenetic protein 2 (BMP-2) has previously been incorporated into a three dimensional reservoir (a biomimetic calcium phosphate coating) on DBB, which effectively promoted the osteogenic response by the slow delivery of BMP-2. The aim of this study was to investigate the therapeutic effectiveness of such coating on the DBB granules in repairing a large cylindrical bone defect (8 mm diameter, 13 mm depth) in sheep. Eight groups were randomly assigned to the bone defects: (i) no graft material; (ii) autologous bone; (iii) DBB only; (iv) DBB mixed with autologous bone; (v) DBB bearing adsorbed BMP-2; (vi) DBB bearing a coating but no BMP-2; (vii) DBB bearing a coating with adsorbed BMP-2; and (viii) DBB bearing a coating-incorporated depot of BMP-2. 4 and 8 weeks after implantation, samples were withdrawn for a histological and a histomorphometric analysis. Histological results confirmed the excellent biocompatibility and osteoconductivity of all the grafts tested. At 4 weeks, DBB mixed with autologous bone or functionalized with coating-incorporated BMP-2 showed more newly-formed bone than the other groups with DBB. At 8 weeks, the volume of newly-formed bone around DBB that bore a coating-incorporated depot of BMP-2 was greatest among the groups with DBB, and was comparable to the autologous bone group. The use of autologous bone and BMP-2 resulted in more bone marrow formation. Multinucleated giant cells were observed in the resorption process around DBB, whereas histomorphometric analysis revealed no significant degradation of DBB. In conclusion, it was shown that incorporating BMP-2 into the calcium phosphate coating of DBB induced strong bone formation around DBB for repairing a critical-sized bone defect.
Collapse
Affiliation(s)
- Tie Liu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Research Institute MOVE, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, The Netherlands.
| | | | | | | | | |
Collapse
|
76
|
Zhang X, Liu T, Huang Y, Wismeijer D, Liu Y. Icariin: Does It Have An Osteoinductive Potential for Bone Tissue Engineering? Phytother Res 2013; 28:498-509. [DOI: 10.1002/ptr.5027] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Revised: 04/07/2013] [Accepted: 05/21/2013] [Indexed: 01/23/2023]
Affiliation(s)
- Xin Zhang
- School of Stomatology; Tongji University; Shanghai China
| | - Tie Liu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), Research Institute MOVE; University of Amsterdam and VU University Amsterdam; Gustav Mahlerlaan 3004 1081 LA Amsterdam the Netherlands
| | - Yuanliang Huang
- Department of Dentistry; Shanghai East Hospital Affiliated to Tongji University; Shanghai China
| | - Daniel Wismeijer
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), Research Institute MOVE; University of Amsterdam and VU University Amsterdam; Gustav Mahlerlaan 3004 1081 LA Amsterdam the Netherlands
| | - Yuelian Liu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), Research Institute MOVE; University of Amsterdam and VU University Amsterdam; Gustav Mahlerlaan 3004 1081 LA Amsterdam the Netherlands
| |
Collapse
|
77
|
Saito E, Suarez-Gonzalez D, Rao RR, Stegemann JP, Murphy WL, Hollister SJ. Use of micro-computed tomography to nondestructively characterize biomineral coatings on solid freeform fabricated poly (L-lactic acid) and poly ((ε-caprolactone) scaffolds in vitro and in vivo. Tissue Eng Part C Methods 2013; 19:507-17. [PMID: 23134479 DOI: 10.1089/ten.tec.2012.0495] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Biomineral coatings have been extensively used to enhance the osteoconductivity of polymeric scaffolds. Numerous porous scaffolds have previously been coated with a bone-like apatite mineral through incubation in simulated body fluid (SBF). However, characterization of the mineral layer formed on scaffolds, including the amount of mineral within the scaffolds, often requires destructive methods. We have developed a method using micro-computed tomography (μ-CT) scanning to nondestructively quantify the amount of mineral in vitro and in vivo on biodegradable scaffolds made of poly (L-lactic acid) (PLLA) and poly (ε-caprolactone) (PCL). PLLA and PCL scaffolds were fabricated using an indirect solid freeform fabrication (SFF) technique to achieve orthogonally interconnected pore architectures. Biomineral coatings were formed on the fabricated PLLA and PCL scaffolds after incubation in modified SBF (mSBF). Scanning electron microscopy and X-ray diffraction confirmed the formation of an apatite-like mineral. The scaffolds were implanted into mouse ectopic sites for 3 and 10 weeks. The presence of a biomineral coating within the porous scaffolds was confirmed through plastic embedding and μ-CT techniques. Tissue mineral content (TMC) and volume of mineral on the scaffold surfaces detected by μ-CT had a strong correlation with the amount of calcium measured by the orthocresolphthalein complex-one (OCPC) method before and after implantation. There was a strong correlation between OCPC pre- and postimplantation and μ-CT measured TMC (R(2)=0.96 preimplant; R(2)=0.90 postimplant) and mineral volume (R(2)=0.96 preimplant; R(2)=0.89 postimplant). The μ-CT technique showed increases in mineral following implantation, suggesting that μ-CT can be used to nondestructively determine the amount of calcium on coated scaffolds.
Collapse
Affiliation(s)
- Eiji Saito
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA
| | | | | | | | | | | |
Collapse
|
78
|
Zheng Y, Wu G, Liu T, Liu Y, Wismeijer D, Liu Y. A Novel BMP2-Coprecipitated, Layer-by-Layer Assembled Biomimetic Calcium Phosphate Particle: A Biodegradable and Highly Efficient Osteoinducer. Clin Implant Dent Relat Res 2013; 16:643-54. [DOI: 10.1111/cid.12050] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuanna Zheng
- Department of Oral Implantology and Prosthetic Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); Research Institute MOVE; VU University; University of Amsterdam; Amsterdam The Netherlands
- School of Stomatology/Dental Clinic; Zhejiang Chinese Medical University; Hangzhou China
| | - Gang Wu
- Department of Oral Implantology and Prosthetic Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); Research Institute MOVE; VU University; University of Amsterdam; Amsterdam The Netherlands
| | - Tie Liu
- Department of Oral Implantology and Prosthetic Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); Research Institute MOVE; VU University; University of Amsterdam; Amsterdam The Netherlands
| | - Yi Liu
- School of Stomatology/Dental Clinic; Zhejiang Chinese Medical University; Hangzhou China
| | - Daniel Wismeijer
- Department of Oral Implantology and Prosthetic Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); Research Institute MOVE; VU University; University of Amsterdam; Amsterdam The Netherlands
| | - Yuelian Liu
- Department of Oral Implantology and Prosthetic Dentistry; Academic Centre for Dentistry Amsterdam (ACTA); Research Institute MOVE; VU University; University of Amsterdam; Amsterdam The Netherlands
| |
Collapse
|
79
|
Lee JS, Murphy WL. Functionalizing calcium phosphate biomaterials with antibacterial silver particles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:1173-9. [PMID: 23184492 PMCID: PMC4227400 DOI: 10.1002/adma.201203370] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2012] [Revised: 09/28/2012] [Indexed: 05/19/2023]
Affiliation(s)
- Jae Sung Lee
- Department of Biomedical Engineering, University of Wisconsin, 1550 Engineering Drive, Madison, WI 53706, USA
| | - William L. Murphy
- Department of Biomedical Engineering, University of Wisconsin, 1550 Engineering Drive, Madison, WI 53706, USA
- Department of Orthopedics and Rehabilitation, University of Wisconsin, 600 Highland Avenue, Madison, WI 53792, USA
- Collaborative Research Center, AO Foundation, Davos, Switzerland
| |
Collapse
|
80
|
Yang C, Liu Y, Li C, Zhang B. Repair of mandibular defects by bone marrow stromal cells expressing the basic fibroblast growth factor transgene combined with multi-pore mineralized Bio-Oss. Mol Med Rep 2012; 7:99-104. [PMID: 23139139 DOI: 10.3892/mmr.2012.1171] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2012] [Accepted: 11/01/2012] [Indexed: 11/05/2022] Open
Abstract
The aim of the present study was to evaluate the effect of combining Bio‑Oss with bone marrow stromal cells (BMSCs) transfected with the basic fibroblast growth factor (bFGF) gene on bone regeneration during mandibular distraction of rabbits. BMSCs obtained from rabbits were transfected with bFGF gene‑encoding plasmids and proliferation rate and the differentiation marker alkaline phosphatase activity were measured. Following seeding into Bio‑Oss collagen and 9‑day culture in vitro, the surface morphology of the Bio‑Oss was assessed using scanning electron microscopy analysis. Three mandibular defects were induced in the lower border of the bilateral mandibular ramus in each New Zealand white rabbit (total n=6). Three scaffolds, group A (seeded with BMSCs/bFGF), B (seeded with BMSCs/pVAX1) and C (cell‑free), which had been cultured in vitro under standard cell culture conditions for 18 days, were implanted into mandibular defects under sterile conditions. Animals were sacrificed by anesthesia overdose 12 weeks following surgery and the scaffolds were extracted for bone mineral density and histological analyses. Results indicate that bFGF was successfully transfected into BMSCs. Proliferation and osteoblast differentiation of BMSCs were stimulated by bFGF in vitro. No differences were identified in surface morphology for Bio‑Oss loaded with variable groups of cells. At week 12 following implantation of Bio‑Oss scaffolds, mineralization of BMSCs in Bio‑Oss scaffolds was observed to be increased by bFGF. New bone and cartilage formation was revealed in hematoxylin and eosin‑stained sections in Bio‑Oss scaffolds and was most abundant in group A (BMSCs transfected with bFGF). In the current study, the bFGF gene was transfected into BMSCs and expressed successfully. bFGF promoted proliferation and differentiation of BMSCs in vitro and implantation of bFGF‑expressing BMSCs combined with Bio‑Oss enhanced new bone regeneration more effectively than traditional methods.
Collapse
Affiliation(s)
- Chunyan Yang
- Department of Maxillofacial Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China
| | | | | | | |
Collapse
|
81
|
Yu X, Wang L, Jiang X, Rowe D, Wei M. Biomimetic CaP coating incorporated with parathyroid hormone improves the osseointegration of titanium implant. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:2177-2186. [PMID: 22639151 DOI: 10.1007/s10856-012-4682-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2011] [Accepted: 05/11/2012] [Indexed: 06/01/2023]
Abstract
Parathyroid hormone (PTH) is a well-known therapeutic agent for osteoporosis treatment, however, the inconvenience of daily administration and side effect from systematic administration severely limits its application in clinic. PTH has been incorporated into a biomimetic calcium phosphate (CaP) coating via a co-precipitation method in a modified simulated body fluid. The aim of the current study is to evaluate the osseointegration response of PTH incorporated CaP coating on titanium implants. Implants with different doses of PTH were inserted into tibiae of mice and evaluated by X-ray, micro-CT, histology and back-scattered scanning electron microscopy. Improved osseointegration of the implants loaded with PTH was observed compared to CaP coating only after 28 days of implantation in mouse tibiae. Micro-CT analysis showed better bone integration around the implant incorporated with PTH. Bone area and bone contact evaluations have demonstrated that peri-implant bone regeneration is highly dependent on the dosage of PTH incorporated. The higher the PTH content, the more bone formed surrounding the implant. Therefore, our results suggest that biomimetic CaP coating could be a useful a carrier for PTH local delivery, which results in improved bone-to-implant integration.
Collapse
Affiliation(s)
- Xiaohua Yu
- Department of Chemical, Materials & Biomolecular Engineering, University of Connecticut, Storrs, CT 06269, USA.
| | | | | | | | | |
Collapse
|
82
|
Miron RJ, Saulacic N, Buser D, Iizuka T, Sculean A. Osteoblast proliferation and differentiation on a barrier membrane in combination with BMP2 and TGFβ1. Clin Oral Investig 2012; 17:981-8. [DOI: 10.1007/s00784-012-0764-7] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2011] [Accepted: 05/25/2012] [Indexed: 02/06/2023]
|
83
|
Bose S, Tarafder S. Calcium phosphate ceramic systems in growth factor and drug delivery for bone tissue engineering: a review. Acta Biomater 2012; 8:1401-21. [PMID: 22127225 DOI: 10.1016/j.actbio.2011.11.017] [Citation(s) in RCA: 474] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 11/04/2011] [Accepted: 11/13/2011] [Indexed: 12/12/2022]
Abstract
Calcium phosphates (CaPs) are the most widely used bone substitutes in bone tissue engineering due to their compositional similarities to bone mineral and excellent biocompatibility. In recent years, CaPs, especially hydroxyapatite and tricalcium phosphate, have attracted significant interest in simultaneous use as bone substitute and drug delivery vehicle, adding a new dimension to their application. CaPs are more biocompatible than many other ceramic and inorganic nanoparticles. Their biocompatibility and variable stoichiometry, thus surface charge density, functionality, and dissolution properties, make them suitable for both drug and growth factor delivery. CaP matrices and scaffolds have been reported to act as delivery vehicles for growth factors and drugs in bone tissue engineering. Local drug delivery in musculoskeletal disorder treatments can address some of the critical issues more effectively and efficiently than the systemic delivery. CaPs are used as coatings on metallic implants, CaP cements, and custom designed scaffolds to treat musculoskeletal disorders. This review highlights some of the current drug and growth factor delivery approaches and critical issues using CaP particles, coatings, cements, and scaffolds towards orthopedic and dental applications.
Collapse
|
84
|
Lee JS, Suarez-Gonzalez D, Murphy WL. Mineral coatings for temporally controlled delivery of multiple proteins. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:4279-84. [PMID: 22039597 PMCID: PMC4056254 DOI: 10.1002/adma.201100060] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Affiliation(s)
- Jae Sung Lee
- Department of Biomedical Engineering, University of Wisconsin, 1550 Engineering Drive, Madison, WI 53706 (USA)
| | - Darilis Suarez-Gonzalez
- Materials Science Program, University of Wisconsin, 1509 University Avenue, Madison, WI 53706 (USA)
| | - William L. Murphy
- Department of Biomedical Engineering, University of Wisconsin, 1550 Engineering Drive, Madison, WI 53706 (USA)
- Department of Orthopedics and Rehabilitation, University of Wisconsin, 600 Highland Avenue, Madison, WI 53792 (USA)
- Department of Pharmacology, University of Wisconsin, 1300 University Avenue, Madison, WI 53706 (USA)
- Collaborative Research Center, AO Foundation
| |
Collapse
|
85
|
Schroeder JE, Mosheiff R. Tissue engineering approaches for bone repair: concepts and evidence. Injury 2011; 42:609-13. [PMID: 21489529 DOI: 10.1016/j.injury.2011.03.029] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Accepted: 03/17/2011] [Indexed: 02/02/2023]
Abstract
Over the last decades, the medical world has advanced dramatically in the understanding of fracture repair. The three components needed for fracture healing are osteoconduction, osteoinduction and osteogenesis. With newly designed scaffolds, ex vivo produced growth factors and isolated stem cells, most of the challenges of critical size bone defects have been resolved in vitro, and in some cases in animal models as well. However, there are still challenges needed to be overcome before these technologies can be fully converted from the bench to the bedside. These technological and biological advancements need to be converted to mass production of affordable products that can be used in every part of the world. Vascularity, full substation of scaffolds by native bone, and bio-safety are the three most critical steps to be challenged before reaching the clinical setting.
Collapse
Affiliation(s)
- Josh E Schroeder
- Orthopedic Surgery Department, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | | |
Collapse
|
86
|
Biemond JE, Eufrásio TS, Hannink G, Verdonschot N, Buma P. Assessment of bone ingrowth potential of biomimetic hydroxyapatite and brushite coated porous E-beam structures. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2011; 22:917-925. [PMID: 21327405 PMCID: PMC3085057 DOI: 10.1007/s10856-011-4256-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Accepted: 02/06/2011] [Indexed: 05/30/2023]
Abstract
The bone ingrowth potential of biomimetic hydroxyapatite and brushite coatings applied on porous E-beam structure was examined in goats and compared to a similar uncoated porous structure and a conventional titanium plasma spray coating. Specimens were implanted in the iliac crest of goats for a period of 3 (4 goats) or 15 weeks (8 goats). Mechanical implant fixation generated by bone ingrowth was analyzed by a push out test. Histomorphometry was performed to assess the bone ingrowth depth and bone implant contact. The uncoated and hydroxyapatite-coated cubic structure had significantly higher mechanical strength at the interface compared to the Ti plasma spray coating at 15 weeks of implantation. Bone ingrowth depth was significantly larger for the hydroxyapatite- and brushite-coated structures compared to the uncoated structure. In conclusion, the porous E-beam surface structure showed higher bone ingrowth potential compared to a conventional implant surface after 15 weeks of implantation. Addition of a calcium phosphate coating to the E-beam structure enhanced bone ingrowth significantly. Furthermore, the calcium phosphate coating appears to work as an accelerator for bone ingrowth.
Collapse
Affiliation(s)
- J Elizabeth Biemond
- Orthopaedic Research Laboratory, Radboud University Nijmegen Medical Center, PO Box 9101, 6500 HB Nijmegen, The Netherlands.
| | | | | | | | | |
Collapse
|
87
|
Edirisinghe M, Stride E. Scaling the heights—challenges in medical materials. J R Soc Interface 2010; 7 Suppl 5:S501-2. [DOI: 10.1098/rsif.2010.0363.focus] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Mohan Edirisinghe
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK
| | - Eleanor Stride
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK
| |
Collapse
|