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Nain A, Chakraborty S, Barman SR, Gavit P, Indrakumar S, Agrawal A, Lin ZH, Chatterjee K. Progress in the development of piezoelectric biomaterials for tissue remodeling. Biomaterials 2024; 307:122528. [PMID: 38522326 DOI: 10.1016/j.biomaterials.2024.122528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 02/15/2024] [Accepted: 03/08/2024] [Indexed: 03/26/2024]
Abstract
Piezoelectric biomaterials have demonstrated significant potential in the past few decades to heal damaged tissue and restore cellular functionalities. Herein, we discuss the role of bioelectricity in tissue remodeling and explore ways to mimic such tissue-like properties in synthetic biomaterials. In the past decade, biomedical engineers have adopted emerging functional biomaterials-based tissue engineering approaches using innovative bioelectronic stimulation protocols based on dynamic stimuli to direct cellular activation, proliferation, and differentiation on engineered biomaterial constructs. The primary focus of this review is to discuss the concepts of piezoelectric energy harvesting, piezoelectric materials, and their application in soft (skin and neural) and hard (dental and bone) tissue regeneration. While discussing the prospective applications as an engineered tissue, an important distinction has been made between piezoceramics, piezopolymers, and their composites. The superiority of piezopolymers over piezoceramics to circumvent issues such as stiffness mismatch, biocompatibility, and biodegradability are highlighted. We aim to provide a comprehensive review of the field and identify opportunities for the future to develop clinically relevant and state-of-the-art biomaterials for personalized and remote health care.
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Affiliation(s)
- Amit Nain
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India.
| | - Srishti Chakraborty
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India
| | - Snigdha Roy Barman
- Department of Bioengineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India
| | - Pratik Gavit
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India; School of Bio Science and Technology, Vellore Institute of Technology, Vellore, 632014, India
| | - Sushma Indrakumar
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India
| | - Akhilesh Agrawal
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India
| | - Zong-Hong Lin
- Department of Biomedical Engineering, National Taiwan University, Taipe, 10617, Taiwan.
| | - Kaushik Chatterjee
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India; Department of Bioengineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India.
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2
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Chen YT, Chuang YH, Chen CM, Wang JY, Wang J. Development of hybrid scaffolds with biodegradable polymer composites and bioactive hydrogels for bone tissue engineering. BIOMATERIALS ADVANCES 2023; 153:213562. [PMID: 37549480 DOI: 10.1016/j.bioadv.2023.213562] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/19/2023] [Accepted: 07/17/2023] [Indexed: 08/09/2023]
Abstract
The development of treatments for critical-sized bone defects has been considered an important topic in the biomedical field because of the high demand for transplantable bone grafts. Following the concept of tissue engineering, implantation of biocompatible porous scaffolds carrying cells and regulating factors is the most efficient strategy to stimulate clinical bone regeneration. With the advancement in the development of 3D-printing techniques, scaffolds with highly controllable architectures can be fabricated to further improve healing efficacies. However, challenges such as the limited biocompatibility of resin materials and poor cell-carrying capacities still exist in the application of current scaffolds. In this study, a novel biodegradable polymer, poly (ethylene glycol)-co-poly (glycerol sebacate) acrylate (PEGSA), was synthesized and blended with hydroxyapatite (HAP) nanoparticles to produce osteoinductive and photocurable resins for 3D printing. The composites were optimized and applied in the fabrication of gyroid scaffolds with biomimetic characteristics and high permeability, followed by the combination of bioactive hydrogels containing Wharton's jelly-derived mesenchymal stem cells (WJMSC) to increase the efficiency of cell delivery. The promotion of osteogenesis from 3D-printed scaffolds was confirmed in-vivo while the hybrid scaffolds were proven to be great platforms for WJMSC culture and differentiation in-vitro. These results indicate that the proposed hybrid systems, combining osteoinductive 3D-printed scaffolds and cell-laden hydrogels, have great potential for bone tissue engineering and are expected to be applied in the treatment of bone defects based on active tissue regeneration.
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Affiliation(s)
- Yi-Ting Chen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Ya-Han Chuang
- Interdisciplinary Program of Life Science and Medicine, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Chao-Ming Chen
- Department of Orthopedics Surgery and Traumatology, Taipei Veterans General Hospital, Taipei 11217, Taiwan
| | - Jir-You Wang
- Department of Orthopedics Surgery and Traumatology, Taipei Veterans General Hospital, Taipei 11217, Taiwan
| | - Jane Wang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan.
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3
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Wang S, Tao Y. Construction of graphene oxide-modified peptide-coated nanofibrous enhances the osteogenic conversion of induced pluripotent stem cells. INT J POLYM MATER PO 2022. [DOI: 10.1080/00914037.2022.2100374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Shu Wang
- Chongqing Emergency Medical Center, Chongqing, China
- Chongqing Key Laboratory of Emergency Medicine, Chongqing, China
| | - Yang Tao
- Chongqing Emergency Medical Center, Chongqing, China
- Chongqing Key Laboratory of Emergency Medicine, Chongqing, China
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Barlian A, Vanya K. Nanotopography in directing osteogenic differentiation of mesenchymal stem cells: potency and future perspective. Future Sci OA 2022; 8:FSO765. [PMID: 34900339 PMCID: PMC8656311 DOI: 10.2144/fsoa-2021-0097] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 10/14/2021] [Indexed: 12/11/2022] Open
Abstract
Severe bone injuries can result in disabilities and thus affect a person's quality of life. Mesenchymal stem cells (MSCs) can be an alternative for bone healing by growing them on nanopatterned substrates that provide mechanical signals for differentiation. This review aims to highlight the role of nanopatterns in directing or inducing MSC osteogenic differentiation, especially in bone tissue engineering. Nanopatterns can upregulate the expression of osteogenic markers, which indicates a faster differentiation process. Combined with growth factors, nanopatterns can further upregulate osteogenic markers, but with fewer growth factors needed, thereby reducing the risks and costs involved. Nanopatterns can be applied in scaffolds for tissue engineering for their lasting effects, even in vivo, thus having great potential for future bone treatment.
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Affiliation(s)
- Anggraini Barlian
- School of Life Science & Technology, Institute of Technology Bandung, Bandung, West Java, 40132, Indonesia
- Research Center for Nanosciences & Nanotechnology, Institute of Technology Bandung, Bandung, West Java, 40132, Indonesia
| | - Katherine Vanya
- School of Life Science & Technology, Institute of Technology Bandung, Bandung, West Java, 40132, Indonesia
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5
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Nair PR, Sreeja S, Sailaja GS. In vitro biomineralization and osteogenesis of Cissus quadrangularis stem extracts: An osteogenic regulator for bone tissue engineering. J Biosci 2021. [DOI: 10.1007/s12038-021-00206-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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6
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Affiliation(s)
- Kanchan Maji
- Center of Excellence in Tissue Engineering, Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, India
| | - Krishna Pramanik
- Center of Excellence in Tissue Engineering, Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, India
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7
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Sreeja S, Parameshwar R, Varma PRH, Sailaja GS. Hierarchically Porous Osteoinductive Poly(hydroxyethyl methacrylate- co-methyl methacrylate) Scaffold with Sustained Doxorubicin Delivery for Consolidated Osteosarcoma Treatment and Bone Defect Repair. ACS Biomater Sci Eng 2021; 7:701-717. [PMID: 33395260 DOI: 10.1021/acsbiomaterials.0c01628] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A bifronted cure system for osteosarcoma, a common aggressive bone tumor, is highly in demand to prevail the postsurgical adversities in connection with systemic chemotherapy and repair of critical-size bone defects. The hierarchically porous therapeutic scaffolds presented here are synthesized by free radical-initiated copolymerization of hydroxyethyl methacrylate and methyl methacrylate [HEMA/MMA 80:20 and 90:10 mM, H2O/NaCl porogen], which are further surface-phosphorylated [P-PHM] and transformed to bifunctional by impregnating doxorubicin (DOX) [DOXP-PHM]. The P-PHM scaffolds exhibited porous microarchitecture analogous to native cancellous bone (scanning electron microscopy analysis), while X-ray photoelectron spectroscopy analysis authenticated surface phosphorylation. Based on pore characteristics, swelling attributes and slow-pace degradation, P-PHM9163 and P-PHM8263 (HEMA/MMA 90:10 and 80:20 with H2O/NaCl: 60/3.0 weight %, respectively) were chosen from the series and evaluated for osteoinductive efficacy in vitro. Both P-PHM9163 and P-PHM8263 invoked calcium phosphate mineralization in simulated physiological conditions (day 14) with Ca/P ratios of 1.58 and 1.66 respectively, comparable to human bone (1.67). Early biomineralization (Alizarin Red S and von Kossa staining) was evidenced at day 7, while osteoblast differentiation was verified by time-dependent expression of the typical late marker, osteocalcin, at day 14 and 21 in rat bone marrow mesenchymal cells. DOX-loaded P-PHM9163 (DOXP-PHM9163) exhibited pH-responsive (tumor analogous pH; 6.5) sustained release of DOX for prolonged time (up to 45 days) and invoked cellular alterations by cortical stress fiber formation and DNA fragmentation in human osteosarcoma cells leading to early apoptosis (24 h), validated by annexin V/PI staining (FACS) and immunostaining (F-actin/DAPI). Subsequent to DOX release tenure, the scaffold induced the formation of well-organized, porous post-release Ca-P apatite coating (Ca/P is 1.3) in simulated body fluid (day 14) which further endorses the dual functionality of the system. Altogether, the results accentuate that DOXP-PHM9163 is a potential bifunctional therapeutic scaffold capable of extended localized chemotherapeutic delivery in-line with inherent osteogenesis for efficient bone cancer treatment.
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Affiliation(s)
- S Sreeja
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kochi, Kerala 682 022, India
| | - Ramesh Parameshwar
- Division of Polymeric Medical Devices, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram 695 011, India
| | - P R Harikrishna Varma
- Head of Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram 695 011, India
| | - G S Sailaja
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kochi, Kerala 682 022, India.,Inter University Centre for Nanomaterials and Devices (IUCND), Cochin University of Science and Technology, Kochi, Kerala 682 022, India.,Centre for Excellence in Advanced Materials, Cochin University of Science and Technology, Kochi, Kerala 682 022, India
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Kim CH, Kim TH. Graphene Hybrid Materials for Controlling Cellular Microenvironments. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E4008. [PMID: 32927729 PMCID: PMC7559936 DOI: 10.3390/ma13184008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/02/2020] [Accepted: 09/03/2020] [Indexed: 01/18/2023]
Abstract
Cellular microenvironments are known as key factors controlling various cell functions, including adhesion, growth, migration, differentiation, and apoptosis. Many materials, including proteins, polymers, and metal hybrid composites, are reportedly effective in regulating cellular microenvironments, mostly via reshaping and manipulating cell morphologies, which ultimately affect cytoskeletal dynamics and related genetic behaviors. Recently, graphene and its derivatives have emerged as promising materials in biomedical research owing to their biocompatible properties as well as unique physicochemical characteristics. In this review, we will highlight and discuss recent studies reporting the regulation of the cellular microenvironment, with particular focus on the use of graphene derivatives or graphene hybrid materials to effectively control stem cell differentiation and cancer cell functions and behaviors. We hope that this review will accelerate research on the use of graphene derivatives to regulate various cellular microenvironments, which will ultimately be useful for both cancer therapy and stem cell-based regenerative medicine.
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Affiliation(s)
- Cheol-Hwi Kim
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea;
| | - Tae-Hyung Kim
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea;
- Integrative Research Centre for Two-Dimensional Functional Materials, Institute of Interdisciplinary Convergence Research, Chung-Ang University, Seoul 06974, Korea
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Maji K, Dasgupta S, Bhaskar R, Gupta MK. Photo-crosslinked alginate nano-hydroxyapatite paste for bone tissue engineering. ACTA ACUST UNITED AC 2020; 15:055019. [PMID: 32438363 DOI: 10.1088/1748-605x/ab9551] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
In this study, methacrylation of alginate was carried out by reacting sodium alginate with methacrylic anhydride in the presence of sodium hydroxide. Separately synthesized nano-hydroxyapatite (nano-HAp) powder was surface functionalized using mercaptopropionic acid and ethylene glycol methacrylate phosphate (EGMP) in the presence of azobisisobutyronitrile benzene as a free radical initiator in a nitrogen atmosphere. Methacrylated alginate solution was mixed with the required amount of surface-functionalized HAp nanoparticles in the presence of 0.05% Irgacure 2959 as a photoinitiator and was placed at the centre of a 8 kW UV light source (265 nm) to prepare photo-crosslinked bone paste. X-ray diffraction analysis indicated that surface functionalization did not alter phase purity of HAp nanopowder in the prepared paste. The graft polymerization of EGMP on the surface of HAp was confirmed by the presence of the 1732 cm-1 band, which belongs to C=-O stretching of EGMP, in addition to the characteristic peaks of nano-HAp and alginate in the composite paste. The storage and loss moduli of all the prepared pastes increased non-linearly with time up to 100 s, demonstrating their pseudo plastic behaviour. The rate of release of bone morphogenetic protein 2 (BMP-2) was significantly faster in the first few days, and the release curve gradually levelled off prior to slowing down up to 22 d. Mesenchymal stem cell adhesion studies revealed that cells could attach to the paste material and stretch over the surface of the material after 14 d of incubation. MTT assay showed that prepared paste materials were conducive to attachment and proliferation of mesenchymal stem cells. Immunocytochemical analysis revealed that the addition of surface-functionalized nano-HAp and BMP-2 to alginate hydrogel enhanced the osteogenic potential of the prepared paste. The results indicate that the newly developed photo-crosslinked paste may be physically and biologically suitable for application as a bone filler.
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Affiliation(s)
- Kanchan Maji
- Department of Ceramic Engineering, National Institute of Technology Rourkela, Rourkela, Odisha 769008, India
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10
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Amiryaghoubi N, Noroozi Pesyan N, Fathi M, Omidi Y. Injectable thermosensitive hybrid hydrogel containing graphene oxide and chitosan as dental pulp stem cells scaffold for bone tissue engineering. Int J Biol Macromol 2020; 162:1338-1357. [PMID: 32561280 DOI: 10.1016/j.ijbiomac.2020.06.138] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 06/10/2020] [Accepted: 06/14/2020] [Indexed: 12/18/2022]
Abstract
Here, we fabricated thermosensitive injectable hydrogel containing poly (N-isopropylacrylamide) (PNIPAAm)-based copolymer/graphene oxide (GO) composite with different feed ratio to chitosan (CS) as a natural polymer through physical and chemical crosslinking for the proliferation and differentiation of the human dental pulp stem cells (hDPSCs) to the osteoblasts. The PNIPAAm copolymer/GO composite was synthesized by free-radical copolymerization of (N-isopropylacrylamide) (NIPAAm), itaconic acid (IA) and maleic anhydride-modified poly(ethylene glycol) (PEG) in the presence of GO and used for the preparation of the hydrogels. The formulated hydrogels were evaluated for the porous architecture, rheological behavior, compressive strength, swelling property, in vitro degradation, hemocompatibility, biocompatibility, and differentiation. The hydrogel could enhance the deposition of minerals and the activity of alkaline phosphatase (ALP), in large part attributable to the oxygen and amine-containing functional groups of GO and CS. The engineered hydrogel could also upregulate the expression of the Runt-related transcription factor 2 and osteocalcin in the hDPSCs cultivated in both the normal and osteogenic media. It seems to promote the absorption of osteogenic inducer too. Based on our findings, the engineered hydrogel demonstrated the osteogenic potential, upon which it is proposed as a constructing scaffold in bone tissue engineering for the transplantation of hDPSCs.
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Affiliation(s)
- Nazanin Amiryaghoubi
- Department of Organic Chemistry, Faculty of Chemistry, Urmia University, 57159 Urmia, Iran; Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nader Noroozi Pesyan
- Department of Organic Chemistry, Faculty of Chemistry, Urmia University, 57159 Urmia, Iran.
| | - Marziyeh Fathi
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Yadollah Omidi
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
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11
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Rather HA, Patel R, Yadav UCS, Vasita R. Dual drug-delivering polycaprolactone-collagen scaffold to induce early osteogenic differentiation and coupled angiogenesis. ACTA ACUST UNITED AC 2020; 15:045008. [PMID: 32427577 DOI: 10.1088/1748-605x/ab7978] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Bone regeneration is a multi-step, overlapping process, in which angiogenesis and osteogenesis are the key players. Several attempts have been made to promote angiogenesis-coupled osteogenesis using scaffolding technology. However, the recreation of functional vasculature during bone regeneration is an unparalleled challenge. In this study, a dual drug-delivering polycaprolactone-collagen fibrous scaffold is reported to promote early osteogenesis and angiogenesis. Simvastatin as a pro-angiogenic and dexamethasone as an osteoinductive drug were encapsulated to functionalize the electrospun fibers. The optically transparent fibrous mat represented the sustained and sequential release of drugs for 28 days. The fibrous mesh increased cell proliferation and enhanced the osteogenic differentiation up to 21 days. The alkaline phosphatase activity and mineral deposition were comparatively higher on dual drug-releasing fibers when compared to control fibers. The dual drug-releasing osteoconductive fibers demonstrated osteogenesis as early as 7 days with a 3.7 and 1.5 fold increase in the expression of osteogenic differentiation markers (RUNX2 and osteocalcin), respectively. In vitro angiogenesis using primary human umbilical vein endothelial cells (pHUVECs) showed no significant difference in cell proliferation among control fibers and dual drug-releasing fibers. However, the angioinductive nature of simvastatin released from the fibers demonstrated tube formation and 2 fold higher angiogenic score. The mRNA and protein expression study of angiogenic markers (VEGFR2 and eNOS) by polymerase chain reaction and western blotting depicted the angioinducing potential of dual drug-releasing fibers. VEGFR2 and eNOS mRNA expressions increased by 1.1 and 1.6 fold, respectively, whereas their protein expression increased by 3.2 and 1.7 fold, respectively. The overall results demonstrate the synergistic effect of osteoconductive substrate and osteoinductive dual drugs to promote early osteogenesis, and release of the pro-angiogenic drug promotes angiogenesis.
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Affiliation(s)
- Hilal Ahmad Rather
- Biomaterials & Biomimetics laboratory, School of Life Sciences, Central University of Gujarat, Gandhinagar, 382030 India
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12
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Sreeja S, Muraleedharan C, Varma PH, Sailaja G. Surface-transformed osteoinductive polyethylene terephthalate scaffold as a dual system for bone tissue regeneration with localized antibiotic delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 109:110491. [DOI: 10.1016/j.msec.2019.110491] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 11/23/2019] [Accepted: 11/24/2019] [Indexed: 02/07/2023]
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13
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Ogueri KS, Jafari T, Escobar Ivirico JL, Laurencin CT. POLYMERIC BIOMATERIALS FOR SCAFFOLD-BASED BONE REGENERATIVE ENGINEERING. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2019; 5:128-154. [PMID: 31423461 PMCID: PMC6697158 DOI: 10.1007/s40883-018-0072-0] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 06/28/2018] [Indexed: 10/28/2022]
Abstract
Reconstruction of large bone defects resulting from trauma, neoplasm, or infection is a challenging problem in reconstructive surgery. The need for bone grafting has been increasing steadily partly because of our enhanced capability to salvage limbs after major bone loss. Engineered bone graft substitutes can have advantages such as lack of antigenicity, high availability, and varying properties depending on the applications chosen for use. These favorable attributes have contributed to the rise of scaffold-based polymeric tissue regeneration. Critical components in the scaffold-based polymeric regenerative engineering approach often include 1. The existence of biodegradable polymeric porous structures with properties selected to promote tissue regeneration and while providing appropriate mechanical support during tissue regeneration. 2. Cellular populations that can influence and enhance regeneration. 3. The use of growth and morphogenetic factors which can influence cellular migration, differentiation and tissue regeneration in vivo. Biodegradable polymers constitute an attractive class of biomaterials for the development of scaffolds due to their flexibility in chemistry and their ability to produce biocompatible degradation products. This paper presents an overview of polymeric scaffold-based bone tissue regeneration and reviews approaches as well as the particular roles of biodegradable polymers currently in use.
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Affiliation(s)
- Kenneth S. Ogueri
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA
- Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
- Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Tahereh Jafari
- Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
- Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Jorge L. Escobar Ivirico
- Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
- Raymond and Beverly Sackler Center for Biomedical, Biological, Physical and Engineering Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT 06269, USA
| | - Cato T. Laurencin
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT 06269, USA
- Institute for Regenerative Engineering, University of Connecticut Health Center, Farmington, CT 06030, USA
- 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
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, USA
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT 06269, USA
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Onak G, Şen M, Horzum N, Ercan UK, Yaralı ZB, Garipcan B, Karaman O. Aspartic and Glutamic Acid Templated Peptides Conjugation on Plasma Modified Nanofibers for Osteogenic Differentiation of Human Mesenchymal Stem Cells: A Comparative Study. Sci Rep 2018; 8:17620. [PMID: 30514892 PMCID: PMC6279782 DOI: 10.1038/s41598-018-36109-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 11/14/2018] [Indexed: 11/21/2022] Open
Abstract
Optimization of nanofiber (NF) surface properties is critical to achieve an adequate cellular response. Here, the impact of conjugation of biomimetic aspartic acid (ASP) and glutamic acid (GLU) templated peptides with poly(lactic-co-glycolic acid) (PLGA) electrospun NF on osteogenic differentiation of human bone marrow-derived mesenchymal stem cells (hMSCs) was evaluated. Cold atmospheric plasma (CAP) was used to functionalize the NF surface and thus to mediate the conjugation. The influence of the CAP treatment following with peptide conjugation to the NF surface was assessed using water contact angle measurements, Fourier-Transform Infrared Spectroscopy (FTIR) and X-ray Photoelectron Spectroscopy (XPS). The effect of CAP treatment on morphology of NF was also checked using Scanning Electron Microscopy (SEM). Both the hydrophilicity of NF and the number of the carboxyl (-COOH) groups on the surface increased with respect to CAP treatment. Results demonstrated that CAP treatment significantly enhanced peptide conjugation on the surface of NF. Osteogenic differentiation results indicated that conjugating of biomimetic ASP templated peptides sharply increased alkaline phosphatase (ALP) activity, calcium content, and expression of key osteogenic markers of collagen type I (Col-I), osteocalcin (OC), and osteopontin (OP) compared to GLU conjugated (GLU-pNF) and CAP treated NF (pNF). It was further depicted that ASP sequences are the major fragments that influence the mineralization and osteogenic differentiation in non-collagenous proteins of bone extracellular matrix.
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Affiliation(s)
- Günnur Onak
- Department of Biomedical Engineering, İzmir Katip Çelebi University, İzmir, 35620, Turkey
| | - Mustafa Şen
- Department of Biomedical Engineering, İzmir Katip Çelebi University, İzmir, 35620, Turkey
| | - Nesrin Horzum
- Department of Engineering Sciences, İzmir Katip Çelebi University, İzmir, 35620, Turkey
| | - Utku Kürşat Ercan
- Department of Biomedical Engineering, İzmir Katip Çelebi University, İzmir, 35620, Turkey
| | - Ziyşan Buse Yaralı
- Department of Biomedical Engineering, İzmir Katip Çelebi University, İzmir, 35620, Turkey
| | - Bora Garipcan
- Institute of Biomedical Engineering, Bogazici University, 34684, İstanbul, Turkey
| | - Ozan Karaman
- Department of Biomedical Engineering, İzmir Katip Çelebi University, İzmir, 35620, Turkey.
- Bonegraft Biomaterials Co., Ege University Technopolis, 35100, Bornova, İzmir, Turkey.
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Gandhimathi C, Venugopal JR, Ramakrishna S, Srinivasan DK. Electrospun-electrosprayed hydroxyapatite nanostructured composites for bone tissue regeneration. J Appl Polym Sci 2018. [DOI: 10.1002/app.46756] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Jayarama Reddy Venugopal
- Center for Nanofibers and Nanotechnology, Nanoscience and Nanotechnology Initiative; National University of Singapore; Singapore
| | - Seeram Ramakrishna
- Center for Nanofibers and Nanotechnology, Nanoscience and Nanotechnology Initiative; National University of Singapore; Singapore
| | - Dinesh Kumar Srinivasan
- Lee Kong Chian School of Medicine; Nanyang Technological University; Singapore
- Department of Anatomy, Yong Loo Lin School of Medicine; National University of Singapore; Singapore
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16
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Attia AC, Yu T, Gleeson SE, Petrovic M, Li CY, Marcolongo M. A Review of Nanofiber Shish Kebabs and Their Potential in Creating Effective Biomimetic Bone Scaffolds. REGENERATIVE ENGINEERING AND TRANSLATIONAL MEDICINE 2018. [DOI: 10.1007/s40883-018-0053-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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17
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Lee KG, Lee KS, Kang YJ, Hwang JH, Lee SH, Park SH, Park Y, Cho YS, Lee BK. Rabbit Calvarial Defect Model for Customized 3D-Printed Bone Grafts. Tissue Eng Part C Methods 2018; 24:255-262. [DOI: 10.1089/ten.tec.2017.0474] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Affiliation(s)
- Kang-Gon Lee
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Republic of Korea
| | - Kang-Sik Lee
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Republic of Korea
| | - Yu-Jeoung Kang
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Republic of Korea
| | - Jong-Hyun Hwang
- Department of Oral and Maxillofacial Surgery, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Republic of Korea
| | - Se-Hwan Lee
- Division of Mechanical and Automotive Engineering, Wonkwang University, Iksan, Jeonbuk, Republic of Korea
| | - Sang-Hyug Park
- Department of Biomedical Engineering, Pukyong National University, Busan, Republic of Korea
| | - Yongdoo Park
- Department of Biomedical Engineering, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Young-Sam Cho
- Division of Mechanical and Automotive Engineering, Wonkwang University, Iksan, Jeonbuk, Republic of Korea
| | - Bu-Kyu Lee
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Republic of Korea
- Department of Oral and Maxillofacial Surgery, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Republic of Korea
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18
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Jhala D, Rather H, Vasita R. Polycaprolactone-chitosan nanofibers influence cell morphology to induce early osteogenic differentiation. Biomater Sci 2018; 4:1584-1595. [PMID: 27709134 DOI: 10.1039/c6bm00492j] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Osteogenic differentiation is highly correlated with cell morphology. Morphological changes are a stimulus as well as a consequence of the differentiation process. Besides, geometrical, biochemical and mechanical properties of a substrate can modulate cell adhesion and morphology. Therefore, in the current study, nanofibrous substrate properties were used to implement necessary changes in cell morphology which induced osteogenic differentiation without biological supplements. A polycaprolactone-chitosan nanofiber substrate had been fabricated with an average diameter of ∼75 nm and an appropriate ratio of polymers that balances surface biocompatibility as well as mechanical strength. DSC and wide-angle XRD analysis revealed miscibility between polymers; whereas a degradation study confirmed the structural integrity of nanofibers. Nanofibers did not cause any cytotoxicity to MC3T3-E1 cells as confirmed by Live/Dead® staining. Morphological studies by SEM and confocal microscopy showed significant changes in terms of cell shape, area, compactness, aspect ratio and nucleus area in cells grown on nanofibers which indicated the osteogenic differentiation inducing potential of nanofibers. This was further confirmed by enhanced mineral deposition and alkaline phosphatase activity up to three weeks. In summary, polycaprolactone-chitosan nanofibers could induce early osteogenic differentiation in MC3T3-E1 pre-osteoblasts without any biological supplements by modulating cell morphology. Moreover, cell morphological features can be used as a predictive and informative approach at the early stages of differentiation experiments.
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Affiliation(s)
- D Jhala
- Biomaterials & Biomimetics laboratory, School of Life Sciences, Central University of Gujarat, Gandhinagar, India.
| | - H Rather
- Biomaterials & Biomimetics laboratory, School of Life Sciences, Central University of Gujarat, Gandhinagar, India.
| | - R Vasita
- Biomaterials & Biomimetics laboratory, School of Life Sciences, Central University of Gujarat, Gandhinagar, India.
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Allan C, Ker A, Smith CA, Tsimbouri PM, Borsoi J, O’Neill S, Gadegaard N, Dalby MJ, Dominic Meek RM. Osteoblast response to disordered nanotopography. J Tissue Eng 2018; 9:2041731418784098. [PMID: 30034770 PMCID: PMC6048666 DOI: 10.1177/2041731418784098] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 05/30/2018] [Indexed: 01/04/2023] Open
Abstract
The ability to influence stem cell differentiation is highly desirable as it would help us improve clinical outcomes for patients in various aspects. Many different techniques to achieve this have previously been investigated. This concise study, however, has focused on the topography on which cells grow. Current uncemented orthopaedic implants can fail if the implant fails to bind to the surrounding bone and, typically, forms a soft tissue interface which reduces direct bone contact. Here, we look at the effect of a previously reported nanotopography that utilises nanodisorder to influence mesenchymal stromal cell (as may be found in the bone marrow) differentiation towards bone and to also exert this effect on mature osteoblasts (as may be found in the bone). As topography is a physical technique, it can be envisaged for use in a range of materials such as polymers and metals used in the manufacture of orthopaedic implants.
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Affiliation(s)
- Christopher Allan
- Centre for Cell Engineering, Institute of Molecular,
Cell and Systems Biology, College of Medical, Veterinary & Life Sciences
(CMVLS), University of Glasgow, Glasgow, UK
| | - Andrew Ker
- Centre for Cell Engineering, Institute of Molecular,
Cell and Systems Biology, College of Medical, Veterinary & Life Sciences
(CMVLS), University of Glasgow, Glasgow, UK
| | - Carol-Anne Smith
- Centre for Cell Engineering, Institute of Molecular,
Cell and Systems Biology, College of Medical, Veterinary & Life Sciences
(CMVLS), University of Glasgow, Glasgow, UK
| | - Penelope M Tsimbouri
- Centre for Cell Engineering, Institute of Molecular,
Cell and Systems Biology, College of Medical, Veterinary & Life Sciences
(CMVLS), University of Glasgow, Glasgow, UK
| | - Juliana Borsoi
- Centre for Cell Engineering, Institute of Molecular,
Cell and Systems Biology, College of Medical, Veterinary & Life Sciences
(CMVLS), University of Glasgow, Glasgow, UK
| | - Stewart O’Neill
- Centre for Cell Engineering, Institute of Molecular,
Cell and Systems Biology, College of Medical, Veterinary & Life Sciences
(CMVLS), University of Glasgow, Glasgow, UK
| | - Nikolaj Gadegaard
- Centre for Cell Engineering, Institute of Molecular,
Cell and Systems Biology, College of Medical, Veterinary & Life Sciences
(CMVLS), University of Glasgow, Glasgow, UK
| | - Matthew J Dalby
- Centre for Cell Engineering, Institute of Molecular,
Cell and Systems Biology, College of Medical, Veterinary & Life Sciences
(CMVLS), University of Glasgow, Glasgow, UK
| | - RM Dominic Meek
- Centre for Cell Engineering, Institute of Molecular,
Cell and Systems Biology, College of Medical, Veterinary & Life Sciences
(CMVLS), University of Glasgow, Glasgow, UK
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20
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Urbanek K, Lesiak M, Krakowian D, Koryciak-Komarska H, Likus W, Czekaj P, Kusz D, Sieroń AL. Notch signaling pathway and gene expression profiles during early in vitro differentiation of liver-derived mesenchymal stromal cells to osteoblasts. J Transl Med 2017; 97:1225-1234. [PMID: 28805807 DOI: 10.1038/labinvest.2017.60] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 03/21/2017] [Indexed: 12/16/2022] Open
Abstract
Notch signaling is a key signaling pathway for cell proliferation and differentiation. Therefore, we formulated a working hypothesis that Notch signaling can be used to detect early osteoblastic differentiation of mesenchymal stromal cells. Changes in expression and distribution of Notch 1, 2, 3, and Delta1 in the cytoplasm and nuclei of rat liver-derived mesenchymal stromal cells differentiating into osteoblasts were investigated, together with the displacement of intracellular domains (ICDs) of the receptors. In addition, an oligonucleotide microarray was used to determine the expression of genes known to be linked to selected signaling pathways. Statistically significant changes in the number of cells expressing Notch1, Notch2, and Delta1, but not Notch3, and their activated forms were detected within 24 h of culture under osteogenic conditions. Although the number of cells expressing Notch3 remained unchanged, the number of cells with the activated receptor was significantly elevated. The number of cells positive for Notch3 was higher than that for the other Notch receptors even after 48 h of differentiation; however, a smaller fraction of cells contained activated Notch3. Culture mineralization was detected on day 4 of differentiation, and all analyzed receptors were present in the cells at that time, but only Delta1 was activated in twice as many cells than that before differentiation. Thus, the three analyzed receptors and ligand can serve as markers of very early stages of osteogenesis in stromal cells. These early changes in activation of the Notch signaling pathway were correlated with the transcription of several genes linked to osteogenesis, such as Bmps, Mmps, and Egfr, and with the regulation of cell cycle and apoptosis.
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Affiliation(s)
- Ksymena Urbanek
- Department of Molecular Biology and Genetics, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland
| | - Marta Lesiak
- Department of Molecular Biology and Genetics, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland
| | - Daniel Krakowian
- Department of Molecular Biology and Genetics, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland
| | - Halina Koryciak-Komarska
- Department of Molecular Biology and Genetics, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland
| | - Wirginia Likus
- Department of Anatomy, School of Health Science in Katowice, Medical University of Silesia, Katowice, Poland
| | - Piotr Czekaj
- Department of Cytophysiology, Chair of Histology and Embryology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland
| | - Damian Kusz
- Department of Orthopaedics and Traumatology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland
| | - Aleksander L Sieroń
- Department of Molecular Biology and Genetics, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland
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21
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Deng Y, Yang Y, Wei S. Peptide-Decorated Nanofibrous Niche Augments In Vitro Directed Osteogenic Conversion of Human Pluripotent Stem Cells. Biomacromolecules 2017; 18:587-598. [DOI: 10.1021/acs.biomac.6b01748] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Yi Deng
- School
of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Yuanyi Yang
- Department
of Materials Engineering, Sichuan College of Architectural Technology, Deyang 618000, China
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22
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Shao W, He J, Han Q, Sang F, Wang Q, Chen L, Cui S, Ding B. A biomimetic multilayer nanofiber fabric fabricated by electrospinning and textile technology from polylactic acid and Tussah silk fibroin as a scaffold for bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 67:599-610. [PMID: 27287159 DOI: 10.1016/j.msec.2016.05.081] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Revised: 04/15/2016] [Accepted: 05/18/2016] [Indexed: 11/28/2022]
Abstract
To engineer bone tissue, a scaffold with good biological properties should be provided to approximate the hierarchical structure of collagen fibrils in natural bone. In this study, we fabricated a novel scaffold consisting of multilayer nanofiber fabrics (MLNFFs) by weaving nanofiber yarns of polylactic acid (PLA) and Tussah silk fibroin (TSF). The yarns were fabricated by electrospinning, and we found that spinnability, as well as the mechanical properties of the resulting scaffold, was determined by the ratio between polylactic acid and Tussah silk fibroin. In particular, a 9:1 mixture can be spun continuously into nanofiber yarns with narrow diameter distribution and good mechanical properties. Accordingly, woven scaffolds based on this mixture had excellent mechanical properties, with Young's modulus 417.65MPa and tensile strength 180.36MPa. For nonwoven scaffolds fabricated from the same materials, the Young's modulus and tensile strength were 2- and 4-fold lower, respectively. Woven scaffolds also supported adhesion and proliferation of mouse mesenchymal stem cells, and promoted biomineralization via alkaline phosphatase and mineral deposition. Finally, the scaffolds significantly enhanced the formation of new bone in damaged femoral condyle in rabbits. Thus, the scaffolds are potentially suitable for bone tissue engineering because of biomimetic architecture, excellent mechanical properties, and good biocompatibility.
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Affiliation(s)
- Weili Shao
- Key Laboratory of Advanced Textile Composites, Ministry of Education, Institute of Textile Composites, Tianjin Polytechnic University, Tianjin 300387, China; Henan provincial key laboratory of functional textile materials, Zhongyuan University of Technology, Zhengzhou 450007, China; Collaborative Innovation Center of Textile and Garment Industry, Henan Province, Zhengzhou 450007, China
| | - Jianxin He
- Henan provincial key laboratory of functional textile materials, Zhongyuan University of Technology, Zhengzhou 450007, China; Collaborative Innovation Center of Textile and Garment Industry, Henan Province, Zhengzhou 450007, China.
| | - Qiming Han
- Henan provincial key laboratory of functional textile materials, Zhongyuan University of Technology, Zhengzhou 450007, China; Collaborative Innovation Center of Textile and Garment Industry, Henan Province, Zhengzhou 450007, China
| | - Feng Sang
- Department of Acquired Immune Deficiency Syndrome Treatment and Research Center, The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou 450000, China
| | - Qian Wang
- Henan provincial key laboratory of functional textile materials, Zhongyuan University of Technology, Zhengzhou 450007, China; Collaborative Innovation Center of Textile and Garment Industry, Henan Province, Zhengzhou 450007, China
| | - Li Chen
- Key Laboratory of Advanced Textile Composites, Ministry of Education, Institute of Textile Composites, Tianjin Polytechnic University, Tianjin 300387, China
| | - Shizhong Cui
- Key Laboratory of Advanced Textile Composites, Ministry of Education, Institute of Textile Composites, Tianjin Polytechnic University, Tianjin 300387, China; Henan provincial key laboratory of functional textile materials, Zhongyuan University of Technology, Zhengzhou 450007, China; Collaborative Innovation Center of Textile and Garment Industry, Henan Province, Zhengzhou 450007, China
| | - Bin Ding
- Henan provincial key laboratory of functional textile materials, Zhongyuan University of Technology, Zhengzhou 450007, China; Collaborative Innovation Center of Textile and Garment Industry, Henan Province, Zhengzhou 450007, China; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201600, China.
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23
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Anderson HJ, Sahoo JK, Ulijn RV, Dalby MJ. Mesenchymal Stem Cell Fate: Applying Biomaterials for Control of Stem Cell Behavior. Front Bioeng Biotechnol 2016; 4:38. [PMID: 27242999 PMCID: PMC4865671 DOI: 10.3389/fbioe.2016.00038] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 04/18/2016] [Indexed: 01/28/2023] Open
Abstract
The materials pipeline for biomaterials and tissue engineering applications is under continuous development. Specifically, there is great interest in the use of designed materials in the stem cell arena as materials can be used to manipulate the cells providing control of behavior. This is important as the ability to "engineer" complexity and subsequent in vitro growth of tissues and organs is a key objective for tissue engineers. This review will describe the nature of the materials strategies, both static and dynamic, and their influence specifically on mesenchymal stem cell fate.
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Affiliation(s)
| | - Jugal Kishore Sahoo
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, Glasgow, UK
| | - Rein V. Ulijn
- Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, Glasgow, UK
- Advanced Science Research Centre (ASRC), Hunter College, City University of New York, New York, NY, USA
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24
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Wang Z, Lin M, Xie Q, Sun H, Huang Y, Zhang D, Yu Z, Bi X, Chen J, Wang J, Shi W, Gu P, Fan X. Electrospun silk fibroin/poly(lactide-co-ε-caprolactone) nanofibrous scaffolds for bone regeneration. Int J Nanomedicine 2016; 11:1483-500. [PMID: 27114708 PMCID: PMC4833379 DOI: 10.2147/ijn.s97445] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background Tissue engineering has become a promising therapeutic approach for bone regeneration. Nanofibrous scaffolds have attracted great interest mainly due to their structural similarity to natural extracellular matrix (ECM). Poly(lactide-co-ε-caprolactone) (PLCL) has been successfully used in bone regeneration, but PLCL polymers are inert and lack natural cell recognition sites, and the surface of PLCL scaffold is hydrophobic. Silk fibroin (SF) is a kind of natural polymer with inherent bioactivity, and supports mesenchymal stem cell attachment, osteogenesis, and ECM deposition. Therefore, we fabricated hybrid nanofibrous scaffolds by adding different weight ratios of SF to PLCL in order to find a scaffold with improved properties for bone regeneration. Methods Hybrid nanofibrous scaffolds were fabricated by blending different weight ratios of SF with PLCL. Human adipose-derived stem cells (hADSCs) were seeded on SF/PLCL nanofibrous scaffolds of various ratios for a systematic evaluation of cell adhesion, proliferation, cytotoxicity, and osteogenic differentiation; the efficacy of the composite of hADSCs and scaffolds in repairing critical-sized calvarial defects in rats was investigated. Results The SF/PLCL (50/50) scaffold exhibited favorable tensile strength, surface roughness, and hydrophilicity, which facilitated cell adhesion and proliferation. Moreover, the SF/PLCL (50/50) scaffold promoted the osteogenic differentiation of hADSCs by elevating the expression levels of osteogenic marker genes such as BSP, Ocn, Col1A1, and OPN and enhanced ECM mineralization. In vivo assays showed that SF/PLCL (50/50) scaffold improved the repair of the critical-sized calvarial defect in rats, resulting in increased bone volume, higher trabecular number, enhanced bone mineral density, and increased new bone areas, compared with the pure PLCL scaffold. Conclusion The SF/PLCL (50/50) nanofibrous scaffold facilitated hADSC proliferation and osteogenic differentiation in vitro and further promoted new bone formation in vivo, suggesting that the SF/PLCL (50/50) nanofibrous scaffold holds great potential in bone tissue regeneration.
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Affiliation(s)
- Zi Wang
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Donghua University, Shanghai, People's Republic of China
| | - Ming Lin
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Donghua University, Shanghai, People's Republic of China
| | - Qing Xie
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Donghua University, Shanghai, People's Republic of China
| | - Hao Sun
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Donghua University, Shanghai, People's Republic of China
| | - Yazhuo Huang
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Donghua University, Shanghai, People's Republic of China
| | - DanDan Zhang
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Donghua University, Shanghai, People's Republic of China
| | - Zhang Yu
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Donghua University, Shanghai, People's Republic of China
| | - Xiaoping Bi
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Donghua University, Shanghai, People's Republic of China
| | - Junzhao Chen
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Donghua University, Shanghai, People's Republic of China
| | - Jing Wang
- Biomaterials and Tissue Engineering Laboratory, College of Chemistry & Chemical Engineering and Biotechnology, Donghua University, Shanghai, People's Republic of China
| | - Wodong Shi
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Donghua University, Shanghai, People's Republic of China
| | - Ping Gu
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Donghua University, Shanghai, People's Republic of China
| | - Xianqun Fan
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Donghua University, Shanghai, People's Republic of China
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25
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Lee JB, Kim JE, Balikov DA, Bae MS, Heo DN, Lee D, Rim HJ, Lee DW, Sung HJ, Kwon IK. Poly(l-Lactic Acid)/Gelatin Fibrous Scaffold Loaded with Simvastatin/Beta-Cyclodextrin-Modified Hydroxyapatite Inclusion Complex for Bone Tissue Regeneration. Macromol Biosci 2016; 16:1027-38. [PMID: 26996294 DOI: 10.1002/mabi.201500450] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 01/28/2016] [Indexed: 01/25/2023]
Abstract
Recently, the application of nanostructured materials in the field of tissue engineering has garnered attention to mediate treatment and regeneration of bone defects. In this study, poly(l-lactic acid) (PLLA)/gelatin (PG) fibrous scaffolds are fabricated and β-cyclodextrin (βCD) grafted nano-hydroxyapatite (HAp) is coated onto the fibrous scaffold surface via an interaction between βCD and adamantane. Simvastatin (SIM), which is known to promote osteoblast viability and differentiation, is loaded into the remaining βCD. The specimen morphologies are characterized by scanning electron microscopy. The release profile of SIM from the drug loaded scaffold is also evaluated. In vitro proliferation and osteogenic differentiation of human adipose derived stem cells on SIM/HAp coated PG composite scaffolds is characterized by alkaline phosphatase (ALP) activity, mineralization (Alizarin Red S staining), and real time Polymerase chain reaction (PCR). The scaffolds are then implanted into rabbit calvarial defects and analyzed by microcomputed tomography for bone formation after four and eight weeks. These results demonstrate that SIM loaded PLLA/gelatin/HAp-(βCD) scaffolds promote significantly higher ALP activity, mineralization, osteogenic gene expression, and bone regeneration than control scaffolds. This suggests the potential application of this material toward bone tissue engineering.
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Affiliation(s)
- Jung Bok Lee
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, 37235, USA
| | - Ji Eun Kim
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Daniel A Balikov
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, 37235, USA
| | - Min Soo Bae
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Dong Nyoung Heo
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Donghyun Lee
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Hyun Joon Rim
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Deok-Won Lee
- Department of Oral and Maxillofacial Surgery, Kyung Hee University Dental Hospital at Gang-dong, Seoul, 05278, Republic of Korea
| | - Hak-Joon Sung
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, 37235, USA
| | - Il Keun Kwon
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul, 02447, Republic of Korea
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26
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Samsonraj RM, Rai B, Sathiyanathan P, Puan KJ, Rötzschke O, Hui JH, Raghunath M, Stanton LW, Nurcombe V, Cool SM. Establishing criteria for human mesenchymal stem cell potency. Stem Cells 2016; 33:1878-91. [PMID: 25752682 PMCID: PMC5363381 DOI: 10.1002/stem.1982] [Citation(s) in RCA: 139] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 01/08/2015] [Indexed: 12/15/2022]
Abstract
This study sought to identify critical determinants of mesenchymal stem cell (MSC) potency using in vitro and in vivo attributes of cells isolated from the bone marrow of age‐ and sex‐matched donors. Adherence to plastic was not indicative of potency, yet capacity for long‐term expansion in vitro varied considerably between donors, allowing the grouping of MSCs from the donors into either those with high‐growth capacity or low‐growth capacity. Using this grouping strategy, high‐growth capacity MSCs were smaller in size, had greater colony‐forming efficiency, and had longer telomeres. Cell‐surface biomarker analysis revealed that the International Society for Cellular Therapy (ISCT) criteria did not distinguish between high‐growth capacity and low‐growth capacity MSCs, whereas STRO‐1 and platelet‐derived growth factor receptor alpha were preferentially expressed on high‐growth capacity MSCs. These cells also had the highest mean expression of the mRNA transcripts TWIST‐1 and DERMO‐1. Irrespective of these differences, both groups of donor MSCs produced similar levels of key growth factors and cytokines involved in tissue regeneration and were capable of multilineage differentiation. However, high‐growth capacity MSCs produced approximately double the volume of mineralized tissue compared to low‐growth capacity MSCs when assessed for ectopic bone‐forming ability. The additional phenotypic criteria presented in this study when combined with the existing ISCT minimum criteria and working proposal will permit an improved assessment of MSC potency and provide a basis for establishing the quality of MSCs prior to their therapeutic application. Stem Cells2015;33:1878–1891
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Affiliation(s)
| | - Bina Rai
- Glycotherapeutics Group.,Sciences, Singapore University of Technology and Design, 8 Somapah Road, Singapore
| | - Padmapriya Sathiyanathan
- Stem Cell and Regenerative Biology, Genome Institute of Singapore, A*STAR, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore
| | - Kia Joo Puan
- Singapore Immunology Network (SIgN), A*STAR, Singapore
| | | | - James H Hui
- Department of Orthopedic Surgery, National University of Singapore, Singapore
| | - Michael Raghunath
- Advanced Wound Care Laboratory, Institute of Medical Biology, A*STAR, Singapore.,Department of Biomedical Engineering.,Department of Biochemistry.,NUS Tissue Engineering Programme
| | - Lawrence W Stanton
- Department of Biological Sciences, National University of Singapore, Singapore.,Stem Cell and Regenerative Biology, Genome Institute of Singapore, A*STAR, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore
| | - Victor Nurcombe
- Glycotherapeutics Group.,Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Simon M Cool
- Glycotherapeutics Group.,Department of Orthopedic Surgery, National University of Singapore, Singapore
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27
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Ahmadi-Aghkand F, Gholizadeh-Ghaleh Aziz S, Panahi Y, Daraee H, Gorjikhah F, Gholizadeh-Ghaleh Aziz S, Hsanzadeh A, Akbarzadeh A. Recent prospective of nanofiber scaffolds fabrication approaches for skin regeneration. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2015; 44:1635-41. [DOI: 10.3109/21691401.2015.1111232] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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28
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Ribeiro C, Sencadas V, Correia DM, Lanceros-Méndez S. Piezoelectric polymers as biomaterials for tissue engineering applications. Colloids Surf B Biointerfaces 2015; 136:46-55. [DOI: 10.1016/j.colsurfb.2015.08.043] [Citation(s) in RCA: 291] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Revised: 07/21/2015] [Accepted: 08/25/2015] [Indexed: 12/13/2022]
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Jo H, Hong M, Shim JB, Ankeny RF, Kim H, Nerem RM, Khang G. The role of demineralized bone particle in a PLGA scaffold designed to create a media equivalent for a tissue engineered blood vessel. Macromol Res 2015. [DOI: 10.1007/s13233-015-3138-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Shalumon KT, Lai GJ, Chen CH, Chen JP. Modulation of Bone-Specific Tissue Regeneration by Incorporating Bone Morphogenetic Protein and Controlling the Shell Thickness of Silk Fibroin/Chitosan/Nanohydroxyapatite Core-Shell Nanofibrous Membranes. ACS APPLIED MATERIALS & INTERFACES 2015; 7:21170-21181. [PMID: 26355766 DOI: 10.1021/acsami.5b04962] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The presence of both osteoconductive and osteoinductive factors is important in promoting stem cell differentiation toward the osteogenic lineage. In this study, we prepared silk fibroin/chitosan/nanohydroxyapatite/bone morphogenetic protein-2 (SF/CS/nHAP/BMP-2, SCHB2) nanofibrous membranes (NFMs) by incorporating BMP-2 in the core and SF/CS/nHAP as the shell layer of a nanofiber with two different shell thicknesses (SCHB2-thick and SCHB-thin). The physicochemical properties of SCHB2 membranes were characterized and compared with those of SF/CS and SF/CS/nHAP NFMs. When tested in release studies, the release rate of BMP-2 and the concentration of BMP-2 in the release medium were higher for SCHB2-thin NFMs because of reduced shell thickness. The BMP-2 released from the nanofiber retained its osteoinductive activity toward human-bone-marrow-derived mesenchymal stem cells (hMSCs). Compared with SF/CS and SF/CS/nHAP NFMs, the incorporation of BMP-2-promoted osteogenic differentiation of hMSCs and the SCHB-thin NFM is the best scaffold during in vitro cell culture. Gene expression analysis by real-time quantitative polymerase chain reaction detected the evolution of both early and late marker genes of bone formation. The relative mRNA expression is in accordance with the effect of BMP-2 incorporation and shell thickness, while the same was reconfirmed through the quantification of bone marker protein osteocalcin. In vivo experiments were carried out by subcutaneously implanting hMSC-seeded SCHB2-thin NFMs and acellular controls on the back sides of nude mice. Immunohistochemical and histological staining confirmed ectopic bone formation and osteogenesis of hMSCs in SCHB2-thin NFMs. In conclusion, the SCHB2-thin NFM could be suggested as a promising scaffold for bone tissue engineering.
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Affiliation(s)
- K T Shalumon
- Department of Chemical and Materials Engineering, Chang Gung University , Kwei-San, Taoyuan 333, Taiwan Republic of China
| | - Guo-Jyun Lai
- Department of Chemical and Materials Engineering, Chang Gung University , Kwei-San, Taoyuan 333, Taiwan Republic of China
| | - Chih-Hao Chen
- Department of Chemical and Materials Engineering, Chang Gung University , Kwei-San, Taoyuan 333, Taiwan Republic of China
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University, College of Medicine , Kwei-San, Taoyuan 333, Taiwan Republic of China
| | - Jyh-Ping Chen
- Department of Chemical and Materials Engineering, Chang Gung University , Kwei-San, Taoyuan 333, Taiwan Republic of China
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Brennan MÁ, Renaud A, Gamblin AL, D'Arros C, Nedellec S, Trichet V, Layrolle P. 3D cell culture and osteogenic differentiation of human bone marrow stromal cells plated onto jet-sprayed or electrospun micro-fiber scaffolds. ACTA ACUST UNITED AC 2015; 10:045019. [PMID: 26238732 DOI: 10.1088/1748-6041/10/4/045019] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A major limitation of the 2D culture systems is that they fail to recapitulate the in vivo 3D cellular microenvironment whereby cell-cell and cell-extracellular matrix (ECM) interactions occur. In this paper, a biomaterial scaffold that mimics the structure of collagen fibers was produced by jet-spraying. This micro-fiber polycaprolactone (PCL) scaffold was evaluated for 3D culture of human bone marrow mesenchymal stromal cells (MSCs) in comparison with a commercially available electrospun scaffold. The jet-sprayed scaffolds had larger pore diameters, greater porosity, smaller diameter fibers, and more heterogeneous fiber diameter size distribution compared to the electrospun scaffolds. Cells on jet-sprayed constructs exhibited spread morphology with abundant cytoskeleton staining, whereas MSCs on electrospun scaffolds appeared less extended with fewer actin filaments. MSC proliferation and cell infiltration occurred at a faster rate on jet-sprayed compared to electrospun scaffolds. Osteogenic differentiation of MSCs and ECM production as measured by ALP, collagen and calcium deposition was superior on jet-sprayed compared to electrospun scaffolds. The jet-sprayed scaffold which mimics the native ECM and permits homogeneous cell infiltration is important for 3D in vitro applications such as bone cellular interaction studies or drug testing, as well as bone tissue engineering strategies.
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Affiliation(s)
- Meadhbh Á Brennan
- INSERM UMR 957, Laboratory of Pathophysiology of Bone Resorption and Primary Bone Tumour Therapy, Faculty of Medicine, University of Nantes, France
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Preclinical in vivo Performance of Novel Biodegradable, Electrospun Poly(lactic acid) and Poly(lactic-co-glycolic acid) Nanocomposites: A Review. MATERIALS 2015; 8:4912-4931. [PMID: 28793481 PMCID: PMC5455478 DOI: 10.3390/ma8084912] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 06/26/2015] [Accepted: 07/24/2015] [Indexed: 12/19/2022]
Abstract
Bone substitute materials have witnessed tremendous development over the past decades and autogenous bone may still be considered the gold standard for many clinicians and clinical approaches in order to rebuild and restore bone defects. However, a plethora of novel xenogenic and synthetic bone substitute materials have been introduced in recent years in the field of bone regeneration. As the development of bone is actually a calcification process within a collagen fiber arrangement, the use of scaffolds in the formation of fibers may offer some advantages, along with additional handling characteristics. This review focuses on material characteristics and degradation behavior of electrospun biodegradable polyester scaffolds. Furthermore, we concentrated on the preclinical in vivo performance with regard to bone regeneration in preclinical studies. The major findings are as follows: Scaffold composition and architecture determine its biological behavior and degradation characteristics; The incorporation of inorganic substances and/or organic substances within composite scaffolds enhances new bone formation; L-poly(lactic acid) and poly(lactic-co-glycolic acid) composite scaffolds, especially when combined with basic substances like hydroxyapatite, tricalcium phosphate or demineralized bone powder, seem not to induce inflammatory tissue reactions in vivo.
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Gholizadeh-Ghaleh aziz S, Gholizadeh-Ghaleh aziz S, Akbarzadeh A. The potential of nanofibers in tissue engineering and stem cell therapy. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2015; 44:1195-200. [DOI: 10.3109/21691401.2015.1029627] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Shiva Gholizadeh-Ghaleh aziz
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Molecular Medicine, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
- Iran National Science Foundation: INSF, Iran
| | | | - Abolfazl Akbarzadeh
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Iran National Science Foundation: INSF, Iran
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Kutikov AB, Skelly JD, Ayers DC, Song J. Templated repair of long bone defects in rats with bioactive spiral-wrapped electrospun amphiphilic polymer/hydroxyapatite scaffolds. ACS APPLIED MATERIALS & INTERFACES 2015; 7:4890-901. [PMID: 25695310 PMCID: PMC8084116 DOI: 10.1021/am508984y] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Effective repair of critical-size long bone defects presents a significant clinical challenge. Electrospun scaffolds can be exploited to deliver protein therapeutics and progenitor cells, but their standalone application for long bone repair has not been explored. We have previously shown that electrospun composites of amphiphilic poly(d,l-lactic acid)-co-poly(ethylene glycol)-co-poly(d,l-lactic acid) (PELA) and hydroxyapatite (HA) guide the osteogenic differentiation of bone marrow stromal cells (MSCs), making these scaffolds uniquely suited for evaluating cell-based bone regeneration approaches. Here we examine whether the in vitro bioactivity of these electrospun scaffolds can be exploited for long bone defect repair, either through the participation of exogenous MSCs or through the activation of endogenous cells by a low dose of recombinant human bone morphogenetic protein-2 (rhBMP-2). In critical-size rat femoral segmental defects, spiral-wrapped electrospun HA-PELA with preseeded MSCs resulted in laminated endochondral ossification templated by the scaffold across the longitudinal span of the defect. Using GFP labeling, we confirmed that the exogenous MSCs adhered to HA-PELA survived at least 7 days postimplantation, suggesting direct participation of these exogenous cells in templated bone formation. When loaded with 500 ng of rhBMP-2, HA-PELA spirals led to more robust but less clearly templated bone formation than MSC-bearing scaffolds. Both treatment groups resulted in new bone bridging over the majority of the defect by 12 weeks. This study is the first demonstration of a standalone bioactive electrospun scaffold for templated bone formation in critical-size long bone defects.
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Affiliation(s)
- Artem B. Kutikov
- Department of Orthopedics and Physical Rehabilitation. University of Massachusetts Medical School.55 Lake Ave North, Worcester, MA 01655, USA
- Department of Cell and Developmental Biology. University of Massachusetts Medical School. 55 Lake Ave North, Worcester, MA 01655, USA
| | - Jordan D. Skelly
- Department of Orthopedics and Physical Rehabilitation. University of Massachusetts Medical School.55 Lake Ave North, Worcester, MA 01655, USA
| | - David C. Ayers
- Department of Orthopedics and Physical Rehabilitation. University of Massachusetts Medical School.55 Lake Ave North, Worcester, MA 01655, USA
| | - Jie Song
- Department of Orthopedics and Physical Rehabilitation. University of Massachusetts Medical School.55 Lake Ave North, Worcester, MA 01655, USA
- Department of Cell and Developmental Biology. University of Massachusetts Medical School. 55 Lake Ave North, Worcester, MA 01655, USA
- Corresponding Author; phone: 1-508-334-7168; fax: 1-508-334-2770
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Lai GJ, Shalumon KT, Chen JP. Response of human mesenchymal stem cells to intrafibrillar nanohydroxyapatite content and extrafibrillar nanohydroxyapatite in biomimetic chitosan/silk fibroin/nanohydroxyapatite nanofibrous membrane scaffolds. Int J Nanomedicine 2015; 10:567-84. [PMID: 25609962 PMCID: PMC4298333 DOI: 10.2147/ijn.s73780] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Incorporation of nanohydroxyapatite (nHAP) within a chitosan (CS)/silk fibroin (SF) nanofibrous membrane scaffold (NMS) may provide a favorable microenvironment that more closely mimics the natural bone tissue physiology and facilitates enhanced osteogensis of the implanted cell population. In this study, we prepared pristine CS/SF NMS, composite CS/SF/nHAP NMS containing intrafibrillar nHAP by in situ blending of 10% or 30% nHAP before the electrospinning step, and composite CS/SF/nHAP NMS containing extrafibrillar nHAP by depositing 30% nHAP through alternative soaking surface mineralization. We investigated the effect of the incorporation of HAP nanoparticles on the physicochemical properties of pristine and composite NMS. We confirmed the presence of ~30 nm nHAP in the composite nanofibrous membranes by thermogravimetry analysis (TGA), X-ray diffraction (XRD), and scanning electron microscopy (SEM), either embedded in or exposed on the nanofiber. Nonetheless, the alternative soaking surface mineralization method drastically influenced the mechanical properties of the NMS with 88% and 94% drop in Young’s modulus and ultimate maximum stress. Using in vitro cell culture experiments, we investigated the effects of nHAP content and location on proliferation and osteogenic differentiation of human bone marrow mesenchymal stem cells (hMSCs). The proliferation of hMSCs showed no significant difference among pristine and composite NMS. However, the extent of osteogenic differentiation of hMSCs was found to be positively correlated with the content of nHAP in the NMS, while its location within the nanofiber played a less significant role. In vivo experiments were carried out with hMSCs seeded in CS/SF/30%nHAP NMS prepared by in situ blending and subcutaneous implantation in nude mice. Micro-computed tomography images as well as histological and immunohistochemical analysis of the retrieved hMSCs/NMS construct 1 and 2 months postimplantation indicated that NMS had the potential for bone regeneration and can be suggested as a promising scaffold for bone tissue engineering.
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Affiliation(s)
- Guo-Jyun Lai
- Department of Chemical and Materials Engineering, Chang Gung University of Science and Technology, Taoyuan, Taiwan, Republic of China
| | - K T Shalumon
- Department of Chemical and Materials Engineering, Chang Gung University of Science and Technology, Taoyuan, Taiwan, Republic of China
| | - Jyh-Ping Chen
- Department of Chemical and Materials Engineering, Chang Gung University of Science and Technology, Taoyuan, Taiwan, Republic of China ; Research Center for Industry of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, Taiwan, Republic of China
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Suslu A, Albayrak AZ, Urkmez AS, Bayir E, Cocen U. Effect of surfactant types on the biocompatibility of electrospun HAp/PHBV composite nanofibers. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:2677-2689. [PMID: 25091188 DOI: 10.1007/s10856-014-5286-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Accepted: 07/21/2014] [Indexed: 06/03/2023]
Abstract
Bone tissue engineering literature conveys investigations regarding biodegradable polymers where bioactive inorganic materials are added either before or after electrospinning process. The goal is to mimic the composition of bone and enhance the biocompatibility of the materials. Yet, most polymeric materials are hydrophobic in nature; therefore, their surfaces are not favorable for human cellular adhesion. In this sense, modifications of the hydrophobic surface of electrospun polymer fibers with hydrophilic and bioactive nanoparticles are beneficial. In this work, dispersion of hydroxyapatite (HAp), which is similar to the mineral component of natural bone, within biodegradable and biocompatible polymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) with the aid of a surfactant has been investigated. Non-ionic TWEEN20 and 12-hydroxysteric acid (HSA), cationic dodecyl trimethyl ammonium bromide (DTAB) and anionic sodium deoxycholate and sodium dodecyl sulfate (SDS) surfactants were used for comparison in order to prepare stable and homogenous nanocomposite suspensions of HAp/PHBV for the electrospinning process. Continuous and uniform composite nanofibers were generated successfully within a diameter range of 400-1,000 nm by the mediation of all surfactant types. Results showed that incorporation of HAp and any of the surfactant types strongly activates the precipitation rate of the apatite-like particles and decreases percent crystallinity of the HAp/PHBV mats. Mineralization was greatly enhanced on the fibers produced by using DTAB, HSA, and especially SDS on where also osteoblastic metabolic activity was similarly increased. The produced HAp/PHBV nanofibrous composite scaffolds would be a promising candidate as an osteoconductive bioceramic/polymer composite material for tissue engineering applications.
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Affiliation(s)
- A Suslu
- Metallurgical and Materials Engineering Department, Dokuz Eylul University, Izmir, Turkey
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37
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Han KS, Song JE, Kang SJ, Lee D, Khang G. Effect of demineralized bone particle/poly(lactic-co-glycolic acid) scaffolds on the attachment and proliferation of mesenchymal stem cells. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 26:92-110. [DOI: 10.1080/09205063.2014.982930] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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38
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Panda N, Bissoyi A, Pramanik K, Biswas A. Directing osteogenesis of stem cells with hydroxyapatite precipitated electrospun eri–tasar silk fibroin nanofibrous scaffold. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 25:1440-57. [DOI: 10.1080/09205063.2014.943548] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Shim JB, Ankeny RF, Kim H, Nerem RM, Khang G. A study of a three-dimensional PLGA sponge containing natural polymers co-cultured with endothelial and mesenchymal stem cells as a tissue engineering scaffold. Biomed Mater 2014; 9:045015. [PMID: 25065725 DOI: 10.1088/1748-6041/9/4/045015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The interaction between vascular endothelial cells (ECs) and vascular smooth muscle cells (VSMCs) in a complex hemodynamic and mechanical environment plays an important role in the control of blood vessel growth and function. Despite the importance of VSMCs, substitutes are needed for vascular therapies. A potential VSMC substitute is human adult bone marrow derived mesenchymal stem cells (hMSCs). In this study, the effect of poly(lactic-co-glycolic acid) (PLGA) scaffolds containing three natural polymers (demineralized bone particles, silk, and small intestine submucosa) on the phenotype of MSCs and SMCs cultured with or without ECs was investigated. The study objective was to create a media equivalent for a tissue engineered blood vessel using PLGA, natural polymers, and MSCs co-cultured with ECs. The PLGA containing the natural polymers silk and SIS showed increased proliferation and cell adhesion. The presence of silk and DBP promoted a MSC phenotype change into a SMC-like phenotype at the mRNA level; however these differences at the protein level were not seen. Additionally, PLGA containing SIS did not induce SMC gene or protein upregulation. Finally, the effect of ECs in combination with the natural polymers was tested. When co-cultured with ECs, the mRNA of SMC specific markers in MSCs and SMCs were increased when compared to SMCs or MSCs alone. However, MSCs, when co-cultured with ECs on PLGA containing silk, exhibited significantly increased α-SMA and calponin expression when compared to PLGA only scaffolds. These results indicate that the natural polymer silk in combination with the co-culture of endothelial cells was most effective at increasing cell viability and inducing a SMC-like phenotype at the mRNA and protein level in MSCs.
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Affiliation(s)
- Jung Bo Shim
- Department of BIN Fusion Technology & Polymer Fusion Research Center, Chonbuk National University, Jeonju, Republic of Korea
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40
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Ko E, Cho SW. Biomimetic polymer scaffolds to promote stem cell-mediated osteogenesis. Int J Stem Cells 2014; 6:87-91. [PMID: 24386552 DOI: 10.15283/ijsc.2013.6.2.87] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/29/2013] [Indexed: 01/12/2023] Open
Abstract
Bone tissue engineering using stem cells with osteogenic potential is a promising avenue of research for bone defect reconstruction. Organic, inorganic, and composite scaffolds have all been engineered to provide biomimetic microenvironments for stem cells. These scaffolds are designed to promote stem cell osteogenesis. Here, we review current technologies for developing biomimetic, osteoinductive scaffolds for stem cell applications. We summarize the reported in vitro and in vivo osteogenic effects of these scaffolds on stem cells.
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Affiliation(s)
- Eunkyung Ko
- Department of Biotechnology, Yonsei University, Seoul, Korea
| | - Seung-Woo Cho
- Department of Biotechnology, Yonsei University, Seoul, Korea
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41
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Braghirolli DI, Steffens D, Pranke P. Electrospinning for regenerative medicine: a review of the main topics. Drug Discov Today 2014; 19:743-53. [DOI: 10.1016/j.drudis.2014.03.024] [Citation(s) in RCA: 157] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Revised: 03/06/2014] [Accepted: 03/27/2014] [Indexed: 12/20/2022]
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42
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Bissoyi A, Pramanik K, Panda NN, Sarangi S. Cryopreservation of hMSCs seeded silk nanofibers based tissue engineered constructs. Cryobiology 2014; 68:332-42. [DOI: 10.1016/j.cryobiol.2014.04.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 03/31/2014] [Accepted: 04/13/2014] [Indexed: 10/25/2022]
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43
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Gao X, Usas A, Tang Y, Lu A, Tan J, Schneppendahl J, Kozemchak AM, Wang B, Cummins JH, Tuan RS, Huard J. A comparison of bone regeneration with human mesenchymal stem cells and muscle-derived stem cells and the critical role of BMP. Biomaterials 2014; 35:6859-70. [PMID: 24856105 DOI: 10.1016/j.biomaterials.2014.04.113] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 04/27/2014] [Indexed: 12/17/2022]
Abstract
Adult multipotent stem cells have been isolated from a variety of human tissues including human skeletal muscle, which represent an easily accessible source of stem cells. It has been shown that human skeletal muscle-derived stem cells (hMDSCs) are muscle-derived mesenchymal stem cells capable of multipotent differentiation. Although hMDSCs can undergo osteogenic differentiation and form bone when genetically modified to express BMP2; it is still unclear whether hMDSCs are as efficient as human bone marrow mesenchymal stem cells (hBMMSCs) for bone regeneration. The current study aimed to address this question by performing a parallel comparison between hMDSCs and hBMMSCs to evaluate their osteogenic and bone regeneration capacities. Our results demonstrated that hMDSCs and hBMMSCs had similar osteogenic-related gene expression profiles and had similar osteogenic differentiation capacities in vitro when transduced to express BMP2. Both the untransduced hMDSCs and hBMMSCs formed very negligible amounts of bone in the critical sized bone defect model when using a fibrin sealant scaffold; however, when genetically modified with lenti-BMP2, both populations successfully regenerated bone in the defect area. No significant differences were found in the newly formed bone volumes and bone defect coverage between the hMDSC and hBMMSC groups. Although both cell types formed mature bone tissue by 6 weeks post-implantation, the newly formed bone in the hMDSCs group underwent quicker remodelling than the hBMMSCs group. In conclusion, our results demonstrated that hMDSCs are as efficient as hBMMSCs in terms of their bone regeneration capacity; however, both cell types required genetic modification with BMP in order to regenerate bone in vivo.
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Affiliation(s)
- Xueqin Gao
- Stem Cell Research Center, University of Pittsburgh, Pittsburgh, PA, United States
| | - Arvydas Usas
- Stem Cell Research Center, University of Pittsburgh, Pittsburgh, PA, United States
| | - Ying Tang
- Stem Cell Research Center, University of Pittsburgh, Pittsburgh, PA, United States; Molecular Therapy Laboratory, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, United States
| | - Aiping Lu
- Stem Cell Research Center, University of Pittsburgh, Pittsburgh, PA, United States
| | - Jian Tan
- Center for Cellular and Molecular Engineering, University of Pittsburgh, Pittsburgh, PA, United States
| | | | - Adam M Kozemchak
- Neuroscience Program, University of Michigan Class of 2013, Pittsburgh Tissue Engineering Initiative Summer Internship, United States
| | - Bing Wang
- Molecular Therapy Laboratory, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, United States
| | - James H Cummins
- Stem Cell Research Center, University of Pittsburgh, Pittsburgh, PA, United States
| | - Rocky S Tuan
- Center for Cellular and Molecular Engineering, University of Pittsburgh, Pittsburgh, PA, United States
| | - Johnny Huard
- Stem Cell Research Center, University of Pittsburgh, Pittsburgh, PA, United States.
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Promotion of human mesenchymal stem cell differentiation on bioresorbable polycaprolactone/biphasic calcium phosphate composite scaffolds for bone tissue engineering. BIOTECHNOL BIOPROC E 2014. [DOI: 10.1007/s12257-013-0781-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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45
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Shin YM, Jo SY, Park JS, Gwon HJ, Jeong SI, Lim YM. Synergistic effect of dual-functionalized fibrous scaffold with BCP and RGD containing peptide for improved osteogenic differentiation. Macromol Biosci 2014; 14:1190-8. [PMID: 24806336 DOI: 10.1002/mabi.201400023] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 03/27/2014] [Indexed: 01/27/2023]
Abstract
Over the last decade, bone tissue engineering scaffolds have been advanced owing to the bioceramic incorporation and biomimetic modification. In this report, a dual-functional fibrous scaffold with a bioceramic and biomolecule is developed, and a combined effect of a dual-modification is investigated. Biphasic calcium phosphate (BCP) is incorporated in electrospun poly (L-lactide) scaffolds, and Arg-Gly-Asp (RGD) peptide is then conjugated through the graft polymerization of acrylic acid by γ-ray irradiation. The scaffolds exhibit the intrinsic properties of BCP as well as RGD peptide, and only RGD peptide improves an adhesion and proliferation of the human mesenchymal stem cell. However, alkaline phosphatase activity and calcium formation are synergistically improved by the BCP and RGD peptide indicating that a favorable microenvironment is constructed for bone formation. Therefore, this combination strategy with bioceramic and biomolecule can be a useful tool for the bone tissue engineering.
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Affiliation(s)
- Young Min Shin
- Research Division for Industry and Environment, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, 29 Gumgugil, Jeongeup, Jeollabuk-do 580-185, Korea
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Liverani L, Abbruzzese F, Mozetic P, Basoli F, Rainer A, Trombetta M. Electrospinning of hydroxyapatite-chitosan nanofibers for tissue engineering applications. ASIA-PAC J CHEM ENG 2014. [DOI: 10.1002/apj.1810] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Liliana Liverani
- Tissue Engineering Lab; Università Campus Bio-Medico di Roma; Rome Italy
- UCBM-CNR Joint Lab for Nanotechnologies for the Life Sciences (Nano4Life); Rome Italy
| | - Franca Abbruzzese
- Tissue Engineering Lab; Università Campus Bio-Medico di Roma; Rome Italy
- UCBM-CNR Joint Lab for Nanotechnologies for the Life Sciences (Nano4Life); Rome Italy
| | - Pamela Mozetic
- Tissue Engineering Lab; Università Campus Bio-Medico di Roma; Rome Italy
- UCBM-CNR Joint Lab for Nanotechnologies for the Life Sciences (Nano4Life); Rome Italy
| | - Francesco Basoli
- Department of Chemical Science and Technologies; University of Rome ‘Tor Vergata’; Rome Italy
| | - Alberto Rainer
- Tissue Engineering Lab; Università Campus Bio-Medico di Roma; Rome Italy
- UCBM-CNR Joint Lab for Nanotechnologies for the Life Sciences (Nano4Life); Rome Italy
| | - Marcella Trombetta
- Tissue Engineering Lab; Università Campus Bio-Medico di Roma; Rome Italy
- UCBM-CNR Joint Lab for Nanotechnologies for the Life Sciences (Nano4Life); Rome Italy
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47
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Establishing a critical-size mandibular defect model in growing pigs: characterization of spontaneous healing. J Oral Maxillofac Surg 2014; 72:1852-68. [PMID: 24815793 DOI: 10.1016/j.joms.2014.02.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 01/23/2014] [Accepted: 02/13/2014] [Indexed: 12/20/2022]
Abstract
PURPOSE A large animal model is desired for preclinical studies aimed at reconstructing severe mandibular skeletal defects using tissue engineering techniques. To identify the size and location requirements for a mandibular critical-size bone defect in growing pigs, the present study investigated the spontaneous healing of surgically created mandibular defects. MATERIALS AND METHODS Six 4-month-old domestic pigs were used. In pigs 1 and 2, a 3-, 5-, or 7-cm(3) subperiosteal mandibular defect was created. In pigs 3 to 6, 3- to 5-cm(3) bilateral defects were randomly created at the anterior (apical to the molars) and posterior (mandibular angle) mandibular regions. Spontaneous healing of these defects was assessed by serial computed tomography scans (postoperative week 1, 6, and 12) and histologic analyses. RESULTS In pigs 1 and 2, regardless of defect size, the anterior, but not posterior, defects had largely healed. Systematic analyses of pigs 3 to 6 revealed, first, the extent of defect regeneration from spontaneous healing was significantly less in the posterior than in the anterior defects, with about two thirds and one third of the original defect volume remaining, respectively. Second, histologically, the posterior defects had considerably less regeneration and more evident tapering of the new bone than did the anterior defects. Finally, the buccal periosteum had completely regenerated in the anterior defects, but had only partially done so in the posterior defects. Also, the buccal surface contour was moderately concave in the anterior defects, but it was severely concave in the posterior defects. CONCLUSIONS Despite robust spontaneous healing of mandibular defects in growing pigs, 5-cm(3) defects in the mandibular angle region without buccal periosteum would be a reasonable critical-size defect model relevant to mandibular defects in adolescent humans.
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Chanchareonsook N, Junker R, Jongpaiboonkit L, Jansen JA. Tissue-engineered mandibular bone reconstruction for continuity defects: a systematic approach to the literature. TISSUE ENGINEERING PART B-REVIEWS 2013; 20:147-62. [PMID: 23865639 DOI: 10.1089/ten.teb.2013.0131] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
BACKGROUND Despite significant surgical advances over the last decades, segmental mandibular bone repair remains a challenge. In light of this, tissue engineering might offer a next step in the evolution of mandibular reconstruction. PURPOSE The purpose of the present report was to (1) systematically review preclinical in vivo as well as clinical literature regarding bone tissue engineering for mandibular continuity defects, and (2) to analyze their effectiveness. MATERIALS AND METHODS An electronic search in the databases of the National Library of Medicine and ISI Web of Knowledge was carried out. Only publications in English were considered, and the search was broadened to animals and humans. Furthermore, the reference lists of related review articles and publications selected for inclusion in this review were systematically screened. Results of histology data and amount of bone bridging were chosen as primary outcome variables. However, for human reports, clinical radiographic evidence was accepted for defined primary outcome variable. The biomechanical properties, scaffold degradation, and clinical wound healing were selected as co-outcome variables. RESULTS The electronic search in the databases of the National Library of Medicine and ISI Web of Knowledge resulted in the identification of 6727 and 5017 titles, respectively. Thereafter, title assessment and hand search resulted in 128 abstracts, 101 full-text articles, and 29 scientific papers reporting on animal experiments as well as 11 papers presenting human data on the subject of tissue-engineered reconstruction of mandibular continuity defects that could be included in the present review. CONCLUSIONS It was concluded that (1) published preclinical in vivo as well as clinical data are limited, and (2) tissue-engineered approaches demonstrate some clinical potential as an alternative to autogenous bone grafting.
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Affiliation(s)
- Nattharee Chanchareonsook
- 1 Department of Oral and Maxillofacial Surgery, National Dental Centre Singapore , Singapore, Singapore
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Pflum ZE, Palumbo SL, Li WJ. Adverse effect of demineralized bone powder on osteogenesis of human mesenchymal stem cells. Exp Cell Res 2013; 319:1942-1955. [DOI: 10.1016/j.yexcr.2013.05.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 04/20/2013] [Accepted: 05/21/2013] [Indexed: 12/18/2022]
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Vajgel A, Mardas N, Farias BC, Petrie A, Cimões R, Donos N. A systematic review on the critical size defect model. Clin Oral Implants Res 2013; 25:879-93. [DOI: 10.1111/clr.12194] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/09/2013] [Indexed: 01/01/2023]
Affiliation(s)
- André Vajgel
- Oral and Maxillofacial Department; University of Pernambuco (FOP/UPE); Recife Brazil
- CAPES Foundation; Ministry of Education of Brazil; Brasília Brazil
- Periodontology Unit; UCL Eastman Dental Institute; London UK
| | - Nikos Mardas
- Periodontology Unit; UCL Eastman Dental Institute; London UK
| | - Bruna Carvalho Farias
- CAPES Foundation; Ministry of Education of Brazil; Brasília Brazil
- Periodontology Unit; UCL Eastman Dental Institute; London UK
- Postgraduate Department; Federal University of Pernambuco (UFPE); Recife Brazil
| | - Aviva Petrie
- Biostatistics Unit; UCL Eastman Dental Institute; London UK
| | - Renata Cimões
- Department of Prosthesis and Oral and Facial Surgery; Federal University of Pernambuco (UFPE); Recife Brazil
| | - Nikolaos Donos
- Periodontology Unit; UCL Eastman Dental Institute; London UK
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