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Dinu C, Berce C, Todea M, Vulpoi A, Leordean D, Bran S, Mitre I, Lazar MA, Crisan B, Crisan L, Rotaru H, Onisor F, Vacaras S, Barbur I, Baciut G, Baciut M, Armencea G. Bone quality around implants: a comparative study of coating with hydroxyapatite and SIO 2-TIO 2 of TI 6AL 7NB implants. PARTICULATE SCIENCE AND TECHNOLOGY 2020. [DOI: 10.1080/02726351.2019.1636916] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- C. Dinu
- Department of Oral and Maxillo-Facial Surgery, “Iuliu – Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - C. Berce
- Laboratory Animal Facility – Centre for Experimental Medicine, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - M. Todea
- Faculty of Physics, Institute of Interdisciplinary Research in Bio-Nano-Sciences, Babes Bolyai University, Cluj-Napoca, Romania
| | - A. Vulpoi
- Faculty of Physics, Institute of Interdisciplinary Research in Bio-Nano-Sciences, Babes Bolyai University, Cluj-Napoca, Romania
| | - D. Leordean
- Department of Manufacturing Engineering, Technical University, Cluj-Napoca, Romania
| | - S. Bran
- Department of Implantology and Maxillofacial Surgery, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - I. Mitre
- Department of Implantology and Maxillofacial Surgery, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - M. A. Lazar
- Department of Implantology and Maxillofacial Surgery, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - B. Crisan
- Department of Implantology and Maxillofacial Surgery, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - L. Crisan
- Department of Oral and Maxillo-Facial Surgery, “Iuliu – Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - H. Rotaru
- Department of Oral and Maxillo-Facial Surgery, “Iuliu – Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - F. Onisor
- Department of Oral and Maxillo-Facial Surgery, “Iuliu – Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - S. Vacaras
- Department of Oral and Maxillo-Facial Surgery, “Iuliu – Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - I. Barbur
- Department of Implantology and Maxillofacial Surgery, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - G. Baciut
- Department of Oral and Maxillo-Facial Surgery, “Iuliu – Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - M. Baciut
- Department of Implantology and Maxillofacial Surgery, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - G. Armencea
- Department of Oral and Maxillo-Facial Surgery, “Iuliu – Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Zhao X, You L, Wang T, Zhang X, Li Z, Ding L, Li J, Xiao C, Han F, Li B. Enhanced Osseointegration of Titanium Implants by Surface Modification with Silicon-doped Titania Nanotubes. Int J Nanomedicine 2020; 15:8583-8594. [PMID: 33173295 PMCID: PMC7648569 DOI: 10.2147/ijn.s270311] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 09/15/2020] [Indexed: 12/18/2022] Open
Abstract
Introduction Despite great progress made in developing orthopedic implants, the development of titanium (Ti) implants with ideal early osseointegration remains a big challenge. Our pilot study has demonstrated that Si-TiO2 nanotubes on the surface of Ti substrates could enhance their osteogenic activity. Hence, in this study, we aim to comprehensively evaluate the effects of silicon-doped titania (Si-TiO2) nanotubes on the osseointegration property of Ti implants. Materials and Methods The Ti implants were surface modified with Si-TiO2 nanotubes through in situ anodization and Si plasma immersion ion implantation (PIII) method. Three groups were divided as Ti implants (Ti), Ti modified with TiO2 nanotubes (TiO2-NTs) and Ti modified with Si-TiO2 nanotubes (Si-TiO2-NTs). The morphology of Si-TiO2 nanotubes was observed by scanning electron microscope. The growth and osteogenic differentiation of MC3T3-E1 cells on the Ti implants were evaluated. Further, the pull-out tests and in vivo osseointegration ability evaluation were performed after implanting the screws in the femur of Sprague Dawley rats. Results The Si-TiO2 nanotubes could be seen on the surface of Ti implants. The MC3T3-E1 cells could grow on the surface of Ti, TiO2-NTs and Si-TiO2-NTs, and showed fast proliferation rate on the Si-TiO2-NTs. Moreover, the production of some osteogenesis-related proteins (ALP and Runx2) at one week and calcium deposition at four week was also enhanced in Si-TiO2-NTs rather than other groups. In vivo osseointegration results showed that Si-TiO2 nanotube-modified Ti screws had higher pullout force at two and four weeks as well as enhanced new bone formation at six weeks compared to bare Ti screws and Ti screws modified with TiO2 nanotubes alone. Discussion The modification of Si-TiO2-NTs on the Ti substrate could generate a nanostructured and hydrophilic surface, which can promote cell growth. Moreover, the existence of the TiO2 nanotubes and Si element also can improve the in vitro osteogenic differentiation of MC3T3-E1 cells and early bone formation around the implanted screws. Together, findings from this study show that surface modification of Ti implants with Si-TiO2 nanotubes could enhance early osseointegration and therefore has the potential for clinical applications.
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Affiliation(s)
- Xijiang Zhao
- Department of Orthopedics, The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, People's Republic of China
| | - Linna You
- Department of Orthopedics, The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, People's Republic of China
| | - Tao Wang
- Department of Orthopedics, The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, People's Republic of China
| | - Xianjun Zhang
- Department of Orthopedics, The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, People's Republic of China
| | - Zexi Li
- Departments of Orthopaedic Surgery and Stomatology, The First Affiliated Hospital, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu 215006, People's Republic of China
| | - Luguang Ding
- Departments of Orthopaedic Surgery and Stomatology, The First Affiliated Hospital, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu 215006, People's Republic of China
| | - Jiaying Li
- Departments of Orthopaedic Surgery and Stomatology, The First Affiliated Hospital, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu 215006, People's Republic of China
| | - Can Xiao
- Departments of Orthopaedic Surgery and Stomatology, The First Affiliated Hospital, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu 215006, People's Republic of China
| | - Fengxuan Han
- Departments of Orthopaedic Surgery and Stomatology, The First Affiliated Hospital, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu 215006, People's Republic of China
| | - Bin Li
- Departments of Orthopaedic Surgery and Stomatology, The First Affiliated Hospital, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu 215006, People's Republic of China
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Zhao QM, Li XK, Guo S, Wang N, Liu WW, Shi L, Guo Z. Osteogenic activity of a titanium surface modified with silicon-doped titanium dioxide. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 110:110682. [PMID: 32204111 DOI: 10.1016/j.msec.2020.110682] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 11/30/2019] [Accepted: 01/19/2020] [Indexed: 01/17/2023]
Abstract
Titanium and its alloys are the most widely used implants in clinical practice. However, their bioactivity is unsatisfactory, and the effect of osteogenesis on the bonding interface between the implant and bone needs to be further improved. In this study, a coating consisting of microporous titanium doped with silicon (Si-TiO2) was successfully created by microarc oxidation (MAO), and Si was evenly distributed on the surface of the coating. The surface morphology, roughness, and phase composition of the Si-TiO2 microporous coating were similar to those of the Si-free doped MAO coatings. The Si-TiO2 microporous coating can promote osteoblast adhesion, spreading, proliferation and differentiation. More importantly, the integrin β1-FAK signaling pathway may be involved in the regulatory effect of the coating on osteoblasts. Further studies in vivo indicated that the Si-TiO2 microporous coating could improve early stage osseointegration. In conclusion, the Si-TiO2 microporous coating is a feasible way to improve the osteogenic abilities of Ti implants to potentially promote clinical performance.
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Affiliation(s)
- Quan-Ming Zhao
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Xiao-Kang Li
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Shuo Guo
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Ning Wang
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Wen-Wen Liu
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Lei Shi
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Zheng Guo
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, China.
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Wang T, Qian S, Zha GC, Zhao XJ, Ding L, Sun JY, Li B, Liu XY. Synergistic effects of titania nanotubes and silicon to enhance the osteogenic activity. Colloids Surf B Biointerfaces 2018; 171:419-426. [PMID: 30075417 DOI: 10.1016/j.colsurfb.2018.07.052] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 07/10/2018] [Accepted: 07/23/2018] [Indexed: 11/29/2022]
Abstract
In this study, titania nanotubes (TNTs) incorporating silicon (Si) were formed on Ti disks using anodization and electron beam evaporation (EBE) technology to improve the osteogenic activity. The amount of Si was exquisitely adjusted by controlling the duration of EBE to optimize the biofunctionality. As the Si was incorporated, the samples exhibited hydrophilic surfaces. Long lasting and controllable Si release was observed from the EBE-modified samples without cytotoxicity. Moreover, initial cell adhesion, spreading, proliferation and osteogenic differentiation of MC3T3-E1 cells were evaluated. The results showed a notable enhancement of spreading, osteogenesis and differentiation of cells on silicon-coated TNTs (Si-TNTs). In particular, samples with highest amount of silicon (∼5.93% Si) displayed greatest augmentation of ALP activity, osteogenic-related gene expression and mineralization compared to the others in the present study. It was indicated that the modification with TNTs and appropriated Si content resulted in enhanced osteoblastic spreading, proliferation and differentiation, and therefore has the potential for future applications in the field of orthopedics.
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Affiliation(s)
- Tao Wang
- Department of Orthopedics, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, China; School of Medicine, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Shi Qian
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Guo-Chun Zha
- Department of Orthopedics, the Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, China
| | - Xi-Jiang Zhao
- Department of Orthopedics, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, China
| | - Lei Ding
- School of Medicine, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Jun-Ying Sun
- Department of Orthopedics, the First Affiliated Hospital, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu 215006, China.
| | - Bin Li
- Department of Orthopedics, the First Affiliated Hospital, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu 215006, China.
| | - Xuan-Yong Liu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
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TiO2 and its composites as promising biomaterials: a review. Biometals 2018; 31:147-159. [DOI: 10.1007/s10534-018-0078-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 01/26/2018] [Indexed: 01/04/2023]
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Saravanan S, Selvamurugan N. Bioactive mesoporous wollastonite particles for bone tissue engineering. J Tissue Eng 2016; 7:2041731416680319. [PMID: 27928496 PMCID: PMC5131810 DOI: 10.1177/2041731416680319] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 11/01/2016] [Indexed: 12/03/2022] Open
Abstract
The current investigation was aimed at identifying the role of mesoporous wollastonite particles on the healing of rat tibial bone defect. The bone defect was created with a 3-mm-diameter dental drill, and it was filled with mesoporous wollastonite particles. After second and fourth weeks of filling treatments, it was found that mesoporous wollastonite particles promoted bone formation as evidenced by X-ray, histological, scanning electron microscope, and energy-dispersive spectra studies. X-ray study showed the closure of drill hole as seen by high-dense radio-opacity image. Histological analysis depicted the deposition of collagen in the bone defect area in response to mesoporous wollastonite particles’ treatment. Scanning electron microscope–energy-dispersive spectra analyses of the sectioned implants also identified the deposition of apatite by these particles. Thus, our results suggested that mesoporous wollastonite particles have bioactive properties, and they can be used as a suitable filling material for promotion of bone formation in vivo.
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Affiliation(s)
- S Saravanan
- Department of Biotechnology, School of Bioengineering, SRM University, Kattankulathur, India; Department of Physiology and Pathophysiology, St. Boniface Research Centre, University of Manitoba, Winnipeg, MB, Canada
| | - Nagarajan Selvamurugan
- Department of Biotechnology, School of Bioengineering, SRM University, Kattankulathur, India
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Silicon-Doped Titanium Dioxide Nanotubes Promoted Bone Formation on Titanium Implants. Int J Mol Sci 2016; 17:292. [PMID: 26927080 PMCID: PMC4813156 DOI: 10.3390/ijms17030292] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 02/14/2016] [Accepted: 02/15/2016] [Indexed: 11/19/2022] Open
Abstract
While titanium (Ti) implants have been extensively used in orthopaedic and dental applications, the intrinsic bioinertness of untreated Ti surface usually results in insufficient osseointegration irrespective of the excellent biocompatibility and mechanical properties of it. In this study, we prepared surface modified Ti substrates in which silicon (Si) was doped into the titanium dioxide (TiO2) nanotubes on Ti surface using plasma immersion ion implantation (PIII) technology. Compared to TiO2 nanotubes and Ti alone, Si-doped TiO2 nanotubes significantly enhanced the expression of genes related to osteogenic differentiation, including Col-I, ALP, Runx2, OCN, and OPN, in mouse pre-osteoblastic MC3T3-E1 cells and deposition of mineral matrix. In vivo, the pull-out mechanical tests after two weeks of implantation in rat femur showed that Si-doped TiO2 nanotubes improved implant fixation strength by 18% and 54% compared to TiO2-NT and Ti implants, respectively. Together, findings from this study indicate that Si-doped TiO2 nanotubes promoted the osteogenic differentiation of osteoblastic cells and improved bone-Ti integration. Therefore, they may have considerable potential for the bioactive surface modification of Ti implants.
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Gindri IM, Palmer KL, Siddiqui DA, Aghyarian S, Frizzo CP, Martins MAP, Rodrigues DC. Evaluation of mammalian and bacterial cell activity on titanium surface coated with dicationic imidazolium-based ionic liquids. RSC Adv 2016. [DOI: 10.1039/c6ra01003b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
This work presents a new strategy to protect titanium surfaces against bacterial colonization and biofilm formation using dicationic imidazolium-based ionic liquid coatings.
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Affiliation(s)
| | - Kelli L. Palmer
- Department of Biological Sciences
- University of Texas at Dallas
- Richardson
- USA
| | | | - Shant Aghyarian
- Department of Bioengineering
- University of Texas at Dallas
- Richardson
- USA
| | - Clarissa P. Frizzo
- Department of Chemistry
- Universidade Federal de Santa Maria
- Santa Maria
- Brazil–97105-900
| | - Marcos A. P. Martins
- Department of Chemistry
- Universidade Federal de Santa Maria
- Santa Maria
- Brazil–97105-900
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Gindri IM, Siddiqui DA, Frizzo CP, Martins MAP, Rodrigues DC. Ionic Liquid Coatings for Titanium Surfaces: Effect of IL Structure on Coating Profile. ACS APPLIED MATERIALS & INTERFACES 2015; 7:27421-27431. [PMID: 26594841 DOI: 10.1021/acsami.5b09309] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Dicationic imidazolium-based ionic liquids (ILs) having bis(trifluoromethylsulfonyl)imide (NTf2) and amino acid-based (methionine and phenylalanine) anionic moieties were synthesized and used to coat titanium surfaces using a dip-coating technique. Dicationic moieties with varying alkyl chains (8 and 10 carbons) and anions with distinct characteristics were selected to understand the influence of IL structural features on deposition profile. X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM) were used in this study to help elucidate intermolecular interactions within ILs as well as between ILs and TiO2 surfaces and to investigate IL coating morphology. Charge concentration on IL moieties, as well as the presence of functional groups that can interact via hydrogen bond, such as carboxylate and amino groups, were observed to influence the deposition profile. ILs containing amino acids as the anionic moiety were observed to interact strongly with TiO2, which resulted in more pronounced changes in Ti 2p binding energy. The higher hydrophobicity of the IL having NTf2 as the anionic moiety resulted in higher adhesion strength between the IL coating and TiO2.
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Affiliation(s)
- Izabelle M Gindri
- Department of Bioengineering, University of Texas at Dallas , Richardson, Texas 75080, United States
| | - Danyal A Siddiqui
- Department of Bioengineering, University of Texas at Dallas , Richardson, Texas 75080, United States
| | - Clarissa P Frizzo
- Department of Chemistry, Universidade Federal de Santa Maria , Santa Maria, Brazil -97105-900
| | - Marcos A P Martins
- Department of Chemistry, Universidade Federal de Santa Maria , Santa Maria, Brazil -97105-900
| | - Danieli C Rodrigues
- Department of Bioengineering, University of Texas at Dallas , Richardson, Texas 75080, United States
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10
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Cytocompatibility of Si-incorporated TiO2 nanopores films. Colloids Surf B Biointerfaces 2015; 133:214-20. [PMID: 26111898 DOI: 10.1016/j.colsurfb.2015.06.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 05/27/2015] [Accepted: 06/02/2015] [Indexed: 11/21/2022]
Abstract
Si-incorporated TiO2 nanopores films were prepared by anodization and silicon plasma immersion ion implantation. The microstructure and phase composition of the films were investigated by scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The hydrophilicity of the films was evaluated using water contact angle measurement and MG63 cells were cultured on the films to investigate the cytocompatibility. The results showed that the concentration and depth of silicon on the Si-incorporated TiO2 nanopores films increased with the duration time of implantation. Both the as-annealed and Si-incorporated nanopores films exhibited good hydrophilicity and cytocompatibility, while the TiO2 nanopores films implanted silicon for 1.0h showed higher proliferation rate and vitality of MG63 cells than others, indicating a great potential application for titanium implants.
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11
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Logan N, Sherif A, Cross AJ, Collins SN, Traynor A, Bozec L, Parkin IP, Brett P. TiO
2
‐coated CoCrMo: Improving the osteogenic differentiation and adhesion of mesenchymal stem cells
in vitro. J Biomed Mater Res A 2014; 103:1208-17. [DOI: 10.1002/jbm.a.35264] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 06/02/2014] [Accepted: 06/10/2014] [Indexed: 01/05/2023]
Affiliation(s)
- Niall Logan
- Biomaterials and Tissue EngineeringUniversity College London, Eastman Dental InstituteLondonWC1X 8LD United Kingdom
| | - Anas Sherif
- Biomaterials and Tissue EngineeringUniversity College London, Eastman Dental InstituteLondonWC1X 8LD United Kingdom
| | - Alison J. Cross
- Department of ChemistryUniversity College LondonLondonWC1H 0AJ United Kingdom
| | | | - Alison Traynor
- Corin Ltd, CirencesterGloucestershireGL7 1YJ United Kingdom
| | - Laurent Bozec
- Biomaterials and Tissue EngineeringUniversity College London, Eastman Dental InstituteLondonWC1X 8LD United Kingdom
| | - Ivan P. Parkin
- Department of ChemistryUniversity College LondonLondonWC1H 0AJ United Kingdom
| | - Peter Brett
- Biomaterials and Tissue EngineeringUniversity College London, Eastman Dental InstituteLondonWC1X 8LD United Kingdom
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Electrospun nanofibrous scaffolds of poly (L-lactic acid)-dicalcium silicate composite via ultrasonic-aging technique for bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 35:426-33. [PMID: 24411397 DOI: 10.1016/j.msec.2013.11.027] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 10/14/2013] [Accepted: 11/16/2013] [Indexed: 12/30/2022]
Abstract
Polymeric nanofibrous composite scaffolds incorporating bioglass and bioceramics have been increasingly promising for bone tissue engineering. In the present study, electrospun poly (l-lactic acid) (PLLA) scaffolds containing dicalcium silicate (C2S) nanoparticles (approximately 300 nm) were fabricated. Using a novel ultrasonic dispersion and aging method, uniform C2S nanoparticles were prepared and they were homogenously distributed in the PLLA nanofibers upon electrospinning. In vitro, the PLLA-C2S fibers induced the formation of HAp on the surface when immersed in simulated body fluid (SBF). During culture, the osteoblastic MC3T3-E1 cells adhered well on PLLA-C2S scaffolds, as evidenced by the well-defined actin stress fibers and well-spreading morphology. Further, compared to pure PLLA scaffolds without C2S, PLLA-C2S scaffolds markedly promoted the proliferation of MC3T3-E1 cells as well as their osteogenic differentiation, which was characterized by the enhanced alkaline phosphatase (ALP) activity. Together, findings from this study clearly demonstrated that PLLA-C2S composite scaffold may function as an ideal candidate for bone tissue engineering.
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13
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Zhang X, Zhang Y, Chen W, Xu L, Wei S, Zheng Y, Zhai M. Biological behavior of fibroblast on contractile collagen hydrogel crosslinked by γ-irradiation. J Biomed Mater Res A 2013; 102:2669-79. [DOI: 10.1002/jbm.a.34938] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 08/14/2013] [Accepted: 08/20/2013] [Indexed: 01/16/2023]
Affiliation(s)
- Xiangmei Zhang
- Beijing Key Laboratory for Solid Waste Utilization and Management; College of Engineering, Peking University; Beijing 100871 China
- Center for Biomedical Materials and Tissue Engineering; Academy for Advanced Interdisciplinary Studies, Peking University; Beijing 100871 China
| | - Yaqing Zhang
- Beijing Key Laboratory for Solid Waste Utilization and Management; College of Engineering, Peking University; Beijing 100871 China
- Center for Biomedical Materials and Tissue Engineering; Academy for Advanced Interdisciplinary Studies, Peking University; Beijing 100871 China
| | - Wenqiang Chen
- Center for Biomedical Materials and Tissue Engineering; Academy for Advanced Interdisciplinary Studies, Peking University; Beijing 100871 China
| | - Ling Xu
- Beijing Key Laboratory for Solid Waste Utilization and Management; College of Engineering, Peking University; Beijing 100871 China
- Center for Biomedical Materials and Tissue Engineering; Academy for Advanced Interdisciplinary Studies, Peking University; Beijing 100871 China
- Shenzhen Key Laboratory for Polymer Science; Peking University, ShenZhen Institution; Shenzhen 518057 China
| | - Shicheng Wei
- Center for Biomedical Materials and Tissue Engineering; Academy for Advanced Interdisciplinary Studies, Peking University; Beijing 100871 China
- Department of Oral and Maxillofacial Surgery; School and Hospital of Stomatology, Peking University; Beijing 100081 China
| | - Yufeng Zheng
- Center for Biomedical Materials and Tissue Engineering; Academy for Advanced Interdisciplinary Studies, Peking University; Beijing 100871 China
| | - Maolin Zhai
- Beijing National Laboratory for Molecular Sciences, Department of Applied Chemistry; College of Chemistry and Molecular Engineering, Peking University; Beijing 100871 China
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