1
|
Ma Z, Liu R, Cao F, Li J, Yang J, Kang K, Gao Z, Zhao D. Bone screws of porous silicon carbide coated with tantalum improve osseointegration and osteogenesis in goat femoral neck fractures. Biomed Mater 2021; 16. [PMID: 34192669 DOI: 10.1088/1748-605x/ac103b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/30/2021] [Indexed: 11/11/2022]
Abstract
Traditional metal materials, such as stainless steel and titanium (Ti) alloys, are still the gold standards for fracture fixation. However, the elastic moduli of these materials differ from that of human cortical bone, and the stress shielding effect affects fracture healing, leading to secondary fractures. Herein, a new porous Ta coated SiC (pTa-SiC) scaffold using in internal fixation devices with good mechanical and biological properties was prepared based on porous silicon carbide (SiC) scaffold and tantalum (Ta) metal. The osteogenic and osseointegration properties of the pTa-SiC scaffold were investigated by bothin vitroandin vivotests. The results showed that compared with porous titanium (pTi), the pTa-SiC promoted the proliferation, migration, and osteogenic differentiation of human bone marrow-derived mesenchymal stem cells. Moreover, the internal fixation tests were carried out in a goat load-bearing femoral neck fracture model. Histological results showed good osseointegration around the pTa-SiC screws. And the acid etching results showed that bone cells grew tightly on the pTa-SiC throughout bone canaliculi, and the growth mode was contact osteogenesis, which indicated good biological fixation effects. Therefore, it is reasonable to be expected that the new pTa-SiC scaffold with excellent mechanical and biological properties could be a promising candidate for bone implant field.
Collapse
Affiliation(s)
- Zhijie Ma
- School of Biomedical Engineering, Dalian University of Technology, Dalian 116024, People's Republic of China
| | - Rong Liu
- School of Biomedical Engineering, Dalian University of Technology, Dalian 116024, People's Republic of China
| | - Fang Cao
- School of Biomedical Engineering, Dalian University of Technology, Dalian 116024, People's Republic of China
| | - Jingyu Li
- Orthopaedic of Department, Affiliated ZhongShan Hospital of Dalian University, Dalian 116001, People's Republic of China
| | - Jiahui Yang
- Orthopaedic of Department, Affiliated ZhongShan Hospital of Dalian University, Dalian 116001, People's Republic of China
| | - Kai Kang
- Orthopaedic of Department, Affiliated ZhongShan Hospital of Dalian University, Dalian 116001, People's Republic of China
| | - Ziqi Gao
- Orthopaedic of Department, Affiliated ZhongShan Hospital of Dalian University, Dalian 116001, People's Republic of China
| | - Dewei Zhao
- Orthopaedic of Department, Affiliated ZhongShan Hospital of Dalian University, Dalian 116001, People's Republic of China
| |
Collapse
|
2
|
Barberi J, Spriano S. Titanium and Protein Adsorption: An Overview of Mechanisms and Effects of Surface Features. MATERIALS (BASEL, SWITZERLAND) 2021; 14:1590. [PMID: 33805137 PMCID: PMC8037091 DOI: 10.3390/ma14071590] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/09/2021] [Accepted: 03/19/2021] [Indexed: 12/14/2022]
Abstract
Titanium and its alloys, specially Ti6Al4V, are among the most employed materials in orthopedic and dental implants. Cells response and osseointegration of implant devices are strongly dependent on the body-biomaterial interface zone. This interface is mainly defined by proteins: They adsorb immediately after implantation from blood and biological fluids, forming a layer on implant surfaces. Therefore, it is of utmost importance to understand which features of biomaterials surfaces influence formation of the protein layer and how to guide it. In this paper, relevant literature of the last 15 years about protein adsorption on titanium-based materials is reviewed. How the surface characteristics affect protein adsorption is investigated, aiming to provide an as comprehensive a picture as possible of adsorption mechanisms and type of chemical bonding with the surface, as well as of the characterization techniques effectively applied to model and real implant surfaces. Surface free energy, charge, microroughness, and hydroxylation degree have been found to be the main surface parameters to affect the amount of adsorbed proteins. On the other hand, the conformation of adsorbed proteins is mainly dictated by the protein structure, surface topography at the nano-scale, and exposed functional groups. Protein adsorption on titanium surfaces still needs further clarification, in particular concerning adsorption from complex protein solutions. In addition, characterization techniques to investigate and compare the different aspects of protein adsorption on different surfaces (in terms of roughness and chemistry) shall be developed.
Collapse
Affiliation(s)
- Jacopo Barberi
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Turin, Italy;
| | | |
Collapse
|
3
|
Hanawa T. Titanium-Tissue Interface Reaction and Its Control With Surface Treatment. Front Bioeng Biotechnol 2019; 7:170. [PMID: 31380361 PMCID: PMC6650641 DOI: 10.3389/fbioe.2019.00170] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 07/03/2019] [Indexed: 12/17/2022] Open
Abstract
Titanium (Ti) and its alloys are widely used for medical and dental implant devices-artificial joints, bone fixators, spinal fixators, dental implant, etc. -because they show excellent corrosion resistance and good hard-tissue compatibility (bone formation and bone bonding ability). Osseointegration is the first requirement of the interface structure between titanium and bone tissue. This concept of osseointegration was immediately spread to dental-materials researchers worldwide to show the advantages of titanium as an implant material compared with other metals. Since the concept of osseointegration was developed, the cause of osseointegration has been actively investigated. The surface chemical state, adsorption characteristics of protein, and bone tissue formation process have also been evaluated. To accelerate osseointegration, roughened and porous surfaces are effective. HA and TiO2 coatings prepared by plasma spray and an electrochemical technique, as well as alkalinization of the surface, are also effective to improve hard-tissue compatibility. Various immobilization techniques for biofunctional molecules have been developed for bone formation and prevention of platelet and bacteria adhesion. These techniques make it possible to apply Ti to a scaffold of tissue engineering. The elucidation of the mechanism of the excellent biocompatibility of Ti can provide a shorter way to develop optimal surfaces. This review should enhance the understanding of the properties and biocompatibility of Ti and highlight the significance of surface treatment.
Collapse
Affiliation(s)
- Takao Hanawa
- Department of Metallic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| |
Collapse
|
4
|
Fernández-Yagüe M, Antoñanzas RP, Roa JJ, Biggs M, Gil FJ, Pegueroles M. Enhanced osteoconductivity on electrically charged titanium implants treated by physicochemical surface modifications methods. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2019; 18:1-10. [PMID: 30822556 DOI: 10.1016/j.nano.2019.02.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 02/05/2019] [Accepted: 02/08/2019] [Indexed: 12/11/2022]
Abstract
Biomimetic design is a key tenet of orthopedic device technology, and in particular the development of responsive surfaces that promote ion exchange with interfacing tissues, facilitating the ionic events that occur naturally during bone repair, hold promise in orthopedic fixation strategies. Non-bioactive nanostructured titanium implants treated by shot-blasting and acid-etching (AE) induced higher bone implant contact (BIC=52% and 65%) compared to shot-blasted treated (SB) implants (BIC=46% and 47%) at weeks 4 and 8, respectively. However, bioactive charged implants produced by plasma (PL) or thermochemical (BIO) processes exhibited enhanced osteoconductivity through specific ionic surface-tissue exchange (PL, BIC= 69% and 77% and BIO, BIC= 85% and 87% at weeks 4 and 8 respectively). Furthermore, bioactive surfaces (PL and BIO) showed functional mechanical stability (resonance frequency analyses) as early as 4 weeks post implantation via increased total bone area (BAT=56% and 59%) ingrowth compared to SB (BAT=35%) and AE (BAT=35%) surfaces.
Collapse
Affiliation(s)
- Marc Fernández-Yagüe
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC), EEBE, Barcelona, Spain; CURAM, Centre for Medical Devices. National University of Ireland, Galway, Galway, Ireland
| | - Roman Perez Antoñanzas
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC), EEBE, Barcelona, Spain; Bioengineering Institute of Technology, School of Dentistry, Universitat Internacional de Catalunya, Barcelona, Spain
| | - Joan Josep Roa
- Structural Integrity, Micromechanics and Materials Reliability, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC), EEBE, Barcelona, Spain
| | - Manus Biggs
- CURAM, Centre for Medical Devices. National University of Ireland, Galway, Galway, Ireland
| | - F Javier Gil
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC), EEBE, Barcelona, Spain; Bioengineering Institute of Technology, School of Dentistry, Universitat Internacional de Catalunya, Barcelona, Spain.
| | - Marta Pegueroles
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC), EEBE, Barcelona, Spain
| |
Collapse
|
5
|
Double acid etching treatment of dental implants for enhanced biological properties. J Appl Biomater Funct Mater 2018; 16:83-89. [PMID: 28885666 DOI: 10.5301/jabfm.5000376] [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] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The topographical features on the surface of dental implants have been considered as a critical parameter for enhancing the osseointegration of implants. In this work, we proposed a surface obtained by a combination of shot blasting and double acid etching. The double acid etching was hypothesized to increase the submicron topography and hence further stimulate the biological properties of the titanium implant. METHODS The topographical features (surface roughness and real surface area), wettability and surface chemical composition were analyzed. RESULTS The results showed that the proposed method produced a dual roughness, mainly composed of randomly distributed peaks and valleys with a superimposed nanoroughness, and hence with an increased specific surface area. Despite the fact that the proposed method does not introduce significant chemical changes, this treatment combination slightly increased the amount of titanium available on the surface, reducing potential surface contaminants. Furthermore, the surface showed increased contact angle values demonstrating an enhanced hydrophobicity on the surface. The biological behavior of the implants was then assessed by culturing osteoblast-like cells on the surface, showing enhanced osteoblast adhesion, proliferation and differentiation on the novel surface. CONCLUSIONS Based on these results, the described surface with dual roughness obtained by double acid etching may be a novel route to obtain key features on the surface to enhance the osseointegration of the implant. Our approach is a simple method to obtain a dual roughness that mimics the bone structure modified by osteoclasts and increases surface area, which enhances osseointegration of dental implants.
Collapse
|
6
|
Martínez‐Ibáñez M, Murthy NS, Mao Y, Suay J, Gurruchaga M, Goñi I, Kohn J. Enhancement of plasma protein adsorption and osteogenesis of hMSCs by functionalized siloxane coatings for titanium implants. J Biomed Mater Res B Appl Biomater 2017; 106:1138-1147. [DOI: 10.1002/jbm.b.33889] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 03/13/2017] [Accepted: 03/18/2017] [Indexed: 12/24/2022]
Affiliation(s)
- Maria Martínez‐Ibáñez
- Polymer Science and Technology DepartmentUniversity of the Basque Country (UPV/EHU)San Sebastián Spain
| | - N. Sanjeeva Murthy
- New Jersey Center for Biomaterials, Rutgers UniversityPiscataway New Jersey
| | - Yong Mao
- New Jersey Center for Biomaterials, Rutgers UniversityPiscataway New Jersey
| | - Julio Suay
- Industrial Systems Engineering and Design DepartmentJaime I University (UJI)Castellón de la Plana Spain
| | - Marilo Gurruchaga
- Polymer Science and Technology DepartmentUniversity of the Basque Country (UPV/EHU)San Sebastián Spain
| | - Isabel Goñi
- Polymer Science and Technology DepartmentUniversity of the Basque Country (UPV/EHU)San Sebastián Spain
| | - Joachim Kohn
- New Jersey Center for Biomaterials, Rutgers UniversityPiscataway New Jersey
| |
Collapse
|
7
|
Pramono S, Pugdee K, Suwanprateep J, Koontongkaew S. Sandblasting and fibronectin-derived peptide immobilization on titanium surface increase adhesion and differentiation of osteoblast-like cells (MC3T3-E1). J Dent Sci 2016; 11:427-436. [PMID: 30895008 PMCID: PMC6395237 DOI: 10.1016/j.jds.2016.07.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 07/19/2016] [Indexed: 11/23/2022] Open
Abstract
Background/purpose Various chemical titanium (Ti) surface modifications have been reported for enhancing cellular activities that promote early osseointegration. The purpose of this study was to determine if sandblasted Ti coated with or without fibronectin (FN) or FN-derived peptides stimulated osteoblast-like cell adhesion, spreading, proliferation, and differentiation. Materials and methods Osteoblast-like cells (MC3T3-E1) were cultured on sandblasted Ti disks immobilized with FN or FN-derived peptides [GRGDSP (Gly-Arg-Gly-Asp-Ser), PHSRN (Pro-His-Ser-Arg-Asn), or GRGDSP/PHSRN]. Surface topography, cell morphology, cell adhesion, cell proliferation, analysis of osteogenesis-related genes and protein expression, alkaline phosphatase, and alizarin red staining of mineralization were evaluated. Results The sandblasted Ti coated with FN or FN-derived peptides enhanced cell adhesion and cell proliferation. However, the Ti coated with FN or FN-derived peptides groups were similar in cell spreading. Osteogenic differentiation was observed in the peptide-modified Ti surface groups, compared with that of the noncoated Ti group. FN and GRGDSP/PHSRN coating enhanced the gene and protein expression of Runx2, osteocalcin, and bone sialoprotein. Alkaline phosphatase activity and matrix mineralization were also markedly enhanced in the Ti coated groups. Conclusion The sandblasted Ti coated with FN or FN-derived peptides (GRGDSP/PHSRN) markedly enhance adhesion, proliferation, and differentiation of osteoblast-like cells compared with uncoated sandblasted Ti.
Collapse
Affiliation(s)
- Samdharu Pramono
- Faculty of Dentistry, Thammasat University, Patholyothin Road, Klongluang, Prathumtani 12121, Thailand.,Department of Prosthodontics, Faculty of Dentistry, Trisakti University, Jakarta, Indonesia
| | - Kamolparn Pugdee
- Faculty of Dentistry, Thammasat University, Patholyothin Road, Klongluang, Prathumtani 12121, Thailand
| | - Jintamai Suwanprateep
- Biomedical Engineering Research Unit, National Metal and Materials Technology Center, Ministry of Science and Technology, Patholyothin Road, Klongluang, Prathumtani 12121, Thailand
| | - Sittichai Koontongkaew
- Faculty of Dentistry, Thammasat University, Patholyothin Road, Klongluang, Prathumtani 12121, Thailand
| |
Collapse
|
8
|
Abbasi N, Khosravi A, Aidy A, Shafiei M. Biphasic Response to Luteolin in MG-63 Osteoblast-Like Cells under High Glucose-Induced Oxidative Stress. IRANIAN JOURNAL OF MEDICAL SCIENCES 2016; 41:118-25. [PMID: 26989282 PMCID: PMC4764961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND Clinical evidence indicates the diabetes-induced impairment of osteogenesis caused by a decrease in osteoblast activity. Flavonoids can increase the differentiation and mineralization of osteoblasts in a high-glucose state. However, some flavonoids such as luteolin may have the potential to induce cytotoxicity in osteoblast-like cells. This study was performed to investigate whether a cytoprotective concentration range of luteolin could be separated from a cytotoxic concentration range in human MG-63 osteoblast-like cells in high-glucose condition. METHODS Cells were cultured in a normal- or high-glucose medium. Cell viability was determined with the MTT assay. The formation of intracellular reactive oxygen species (ROS) was measured using probe 2',7' -dichlorofluorescein diacetate, and osteogenic differentiation was evaluated with an alkaline phosphatase bioassay. RESULTS ROS generation, reduction in alkaline phosphatase activity, and cell death induced by high glucose were inhibited by lower concentrations of luteolin (EC50, 1.29±0.23 µM). Oxidative stress mediated by high glucose was also overcome by N-acetyl-L-cysteine. At high concentrations, luteolin caused osteoblast cell death in normal- and high-glucose states (IC50, 34±2.33 and 27±2.42 µM, respectively), as represented by increased ROS and decreased alkaline phosphatase activity. CONCLUSION Our results indicated that the cytoprotective action of luteolin in glucotoxic condition was manifested in much lower concentrations, by a factor of approximately 26 and 20, than was its cytotoxic activity, which occurred under normal or glucotoxic condition, respectively.
Collapse
Affiliation(s)
- Naser Abbasi
- Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Afra Khosravi
- Biotechnology and Medicinal Plants Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Ali Aidy
- Biotechnology and Medicinal Plants Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Massoumeh Shafiei
- Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran,Correspondence: Massoumeh Shafiei, PhD; Department of Pharmacology, School of Medicine, Iran University of Medical Sciences, Hemmat Highway, Tehran, Iran Tel: +98 21 88622573 Fax: +98 21 88622696
| |
Collapse
|
9
|
Micro-arc oxidation as a tool to develop multifunctional calcium-rich surfaces for dental implant applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 54:196-206. [DOI: 10.1016/j.msec.2015.05.012] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 03/29/2015] [Accepted: 05/04/2015] [Indexed: 01/10/2023]
|
10
|
Liu Z, Zhou W, Tangl S, Liu S, Xu X, Rausch-Fan X. Potential mechanism for osseointegration of dental implants in Zucker diabetic fatty rats. Br J Oral Maxillofac Surg 2015; 53:748-53. [PMID: 26093969 DOI: 10.1016/j.bjoms.2015.05.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 05/28/2015] [Indexed: 11/15/2022]
Abstract
Our aim was to investigate the impact of diabetes mellitus and different durations of glycaemic control on early osseointegration of dental implants, and to explore possible mechanisms by measuring the expression of integrin α5β1 and fibronectin in bone around the implant. We divided 33 male Zucker diabetic fatty (ZDF) rats aged 3 months into 3 groups. The first group comprised diabetic rats with dental implants (controls); the second group was treated with insulin and implants were placed simultaneously (exenatide alone group); and the third group was treated with insulin until the serum glucose was at a constant concentration (< 16 mmol/L), and implants were then inserted (exenatide+normal glucose group). Rats were killed 7, 14, 30, and 60 days after implants had been inserted. The expression of integrin α5β1 and fibronectin in bone around the implants was detected by immunohistochemical analysis in each group. The expression in the exenatide+normal glucose group was stronger than in the other 2 groups. Fourteen days after implantation, expression of integrin α5β1 in the exenatide alone group was significantly stronger than that in the control group (p=0.027), and 60 days after implantation the expression of fibronectin in the exenatide alone group was also significantly stronger than that among the controls (p=0.001). Both fibronectin and integrin α5β1 participate in the adhesion of osteoblasts and act as signals at the bone/implant interface. Diabetes interferes with the osseointegration of implants by deferring expression of fibronectin and integrin α5β1.
Collapse
Affiliation(s)
- Zhonghao Liu
- Department of Implant Dentistry, School of Stomatology, Shandong University, No.44-1 West culture road, Lixia District, Jinan 250012, P.R. China; Department of Dental Implantology, Yantai Stomatological Hospital, No. 142, North Great Str., Zhifu District, Yantai 264008, P.R. China
| | - Wenjuan Zhou
- Department of Dental Implantology, Yantai Stomatological Hospital, No. 142, North Great Str., Zhifu District, Yantai 264008, P.R. China; Orthodontics & Periodontology Research Unit, Bernhard-Gottlieb-University Clinic of Dentistry, Sensengasse 2a-1090 Vienna, Austria
| | - Stefan Tangl
- Department of Oral Surgery, Medical University of Vienna, Sensengasse 2a-1090 Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Shutai Liu
- Department of Dental Implantology, Yantai Stomatological Hospital, No. 142, North Great Str., Zhifu District, Yantai 264008, P.R. China
| | - Xin Xu
- Department of Implant Dentistry, School of Stomatology, Shandong University, No.44-1 West culture road, Lixia District, Jinan 250012, P.R. China.
| | - Xiaohui Rausch-Fan
- Department of Dental Implantology, Yantai Stomatological Hospital, No. 142, North Great Str., Zhifu District, Yantai 264008, P.R. China; Orthodontics & Periodontology Research Unit, Bernhard-Gottlieb-University Clinic of Dentistry, Sensengasse 2a-1090 Vienna, Austria
| |
Collapse
|
11
|
Liberio MS, Sadowski MC, Soekmadji C, Davis RA, Nelson CC. Differential effects of tissue culture coating substrates on prostate cancer cell adherence, morphology and behavior. PLoS One 2014; 9:e112122. [PMID: 25375165 PMCID: PMC4223027 DOI: 10.1371/journal.pone.0112122] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 10/12/2014] [Indexed: 12/22/2022] Open
Abstract
Weak cell-surface adhesion of cell lines to tissue culture surfaces is a common problem and presents technical limitations to the design of experiments. To overcome this problem, various surface coating protocols have been developed. However, a comparative and precise real-time measurement of their impact on cell behavior has not been conducted. The prostate cancer cell line LNCaP, derived from a patient lymph node metastasis, is a commonly used model system in prostate cancer research. However, the cells’ characteristically weak attachment to the surface of tissue culture vessels and cover slips has impeded their manipulation and analysis and use in high throughput screening. To improve the adherence of LNCaP cells to the culture surface, we compared different coating reagents (poly-l-lysine, poly-l-ornithine, collagen type IV, fibronectin, and laminin) and culturing conditions and analyzed their impact on cell proliferation, adhesion, morphology, mobility and gene expression using real-time technologies. The results showed that fibronectin, poly-l-lysine and poly-l-ornithine improved LNCaP cells adherence and provoked cell morphology alterations, such as increase of nuclear and cellular area. These coating reagents also induced a higher expression of F-actin and reduced cell mobility. In contrast, laminin and collagen type IV did not improve adherence but promoted cell aggregation and affected cell morphology. Cells cultured in the presence of laminin displayed higher mobility than control cells. All the coating conditions significantly affected cell viability; however, they did not affect the expression of androgen receptor-regulated genes. Our comparative findings provide important insight for the selection of the ideal coating reagent and culture conditions for the cancer cell lines with respect to their effect on proliferation rate, attachment, morphology, migration, transcriptional response and cellular cytoskeleton arrangement.
Collapse
Affiliation(s)
- Michelle S. Liberio
- Eskitis Institute for Drug Discovery, Griffith University, Nathan, Australia
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Australia
| | - Martin C. Sadowski
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Australia
| | - Carolina Soekmadji
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Australia
| | - Rohan A. Davis
- Eskitis Institute for Drug Discovery, Griffith University, Nathan, Australia
| | - Colleen C. Nelson
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Australia
- * E-mail:
| |
Collapse
|
12
|
Lee WF, Chiang HJ, Lin CT, Ou KL, Peng PW. Research of biocompatibility on bioactive films fabricated using oxygen plasma immersion ion implantation. JOURNAL OF POLYMER ENGINEERING 2014. [DOI: 10.1515/polyeng-2013-0221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Abstract
In the present study, a nanoporous, biocompatible titanium dioxide (TiO2) film was formed on the surface of titanium, using oxygen plasma immersion ion implantation (OPIII), and the influence of this film on the bio-functionalization, including the proliferation and differentiation properties of MG-63 osteoblast-like cells, was analyzed and investigated. The OPIII-treated surface was characterized by X-ray photoelectron, which showed that a TiOx layer was formed on Ti substrates. This TiOx surface exhibited nanoscale surface roughness in the form of nanoporous structures. The results also revealed that MG-63 cells expressed increased proliferation on the OPIII-treated surface as compared with the untreated Ti substrate. The Ti specimens treated with plasma energy of 1 kW revealed better expression of alkaline phosphatase (ALP) activity and showed higher average surface roughness than untreated specimens. Thus, it can be concluded that bioactivity of Ti implants can potentially be improved by OPIII.
Collapse
|
13
|
Shi Z, Neoh KG, Kang ET. In vitro endothelialization of cobalt chromium alloys with micro/nanostructures using adipose-derived stem cells. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:1067-1077. [PMID: 23371765 DOI: 10.1007/s10856-013-4868-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 01/18/2013] [Indexed: 06/01/2023]
Abstract
In this study, integrin expression, proliferation, and endothelial differentiation of adipose-derived stem cells (ADSCs) on pristine cobalt chrome (CoCr) surface, microstructured and nanostructured CoCr surfaces (obtained after treatment with piranha solution) were investigated. The results showed that proliferation of ADSCs on the substrates treated with piranha solution is not significantly different from that on the pristine substrates. However, quantitative real-time PCR analysis showed significantly enhanced up-regulation of CD31, vWF and eNOS from gene level by ADSCs on the nanostructured substrates but not on the microstructured substrates. The adsorption of vitronectin from the culture medium on the nanostructured substrates was higher than on the pristine and microstructured substrates. We speculate that this results in increased integrin αvβ3 expression in the ADSCs, which may contribute partially to the enhanced endothelial differentiation of ADSCs on the nanostructured substrates. This study shows that ADSCs can be used to endothelialize stents in vitro and the endothelial differentiation of ADSC is enhanced on the nanostructured surfaces.
Collapse
Affiliation(s)
- Zhilong Shi
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore, Singapore
| | | | | |
Collapse
|
14
|
Gil FJ, Manzanares N, Badet A, Aparicio C, Ginebra MP. Biomimetic treatment on dental implants for short-term bone regeneration. Clin Oral Investig 2013; 18:59-66. [DOI: 10.1007/s00784-013-0953-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2011] [Accepted: 02/13/2013] [Indexed: 11/30/2022]
|
15
|
Chen X, Li Y, Aparicio C. Biofunctional Coatings for Dental Implants. THIN FILMS AND COATINGS IN BIOLOGY 2013. [DOI: 10.1007/978-94-007-2592-8_4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
16
|
Sverzut AT, Crippa GE, Morra M, de Oliveira PT, Beloti MM, Rosa AL. Effects of type I collagen coating on titanium osseointegration: histomorphometric, cellular and molecular analyses. Biomed Mater 2012; 7:035007. [PMID: 22406648 DOI: 10.1088/1748-6041/7/3/035007] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The investigation of titanium (Ti) surface modifications aiming to increase implant osseointegration is one of the most active research areas in dental implantology. This study was carried out to evaluate the benefits of coating Ti with type I collagen on the osseointegration of dental implants. Acid etched Ti implants (AETi), either untreated or coated with type I collagen (ColTi), were placed in dog mandibles for three and eight weeks for histomorphometric, cellular and molecular evaluations of bone tissue response. While the histological aspects were essentially the same with both implants being surrounded by lamellar bone trabeculae, histomorphometric analysis showed more abundant bone formation in ColTi, mainly at three weeks. Cellular evaluation showed that cells harvested from bone fragments in close contact with ColTi display lower proliferative capacity and higher alkaline phosphatase activity, phenotypic features associated with more differentiated osteoblasts. Confirming these findings, molecular analyses showed that ColTi implants up-regulates the expression of a panel of genes well known as osteoblast markers. Our results present a set of evidences that coating AETi with collagen fastens the osseointegration by stimulating bone formation at the cellular and molecular levels, making this combination of morphological and biochemical modification a promising approach to treat Ti surfaces.
Collapse
Affiliation(s)
- Alexander Tadeu Sverzut
- Cell Culture Laboratory, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | | | | | | | | | | |
Collapse
|
17
|
Aparicio C, Padrós A, Gil FJ. In vivo evaluation of micro-rough and bioactive titanium dental implants using histometry and pull-out tests. J Mech Behav Biomed Mater 2011; 4:1672-82. [PMID: 22098868 DOI: 10.1016/j.jmbbm.2011.05.005] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2010] [Revised: 04/07/2011] [Accepted: 05/03/2011] [Indexed: 10/18/2022]
Abstract
We report on the in vivo histological and mechanical performance of titanium dental implants with a new surface treatment (2Step) consisting of an initial grit-blasting process to produce a micro-rough surface, followed by a combined chemical and thermal treatment that produces a potentially bioactive surface, i.e., that can form an apatitic layer when exposed to biomimetic conditions in vitro. Our aim was to assess the short- and mid-term bone regenerative potential and mechanical retention of 2Step implants in mandible and maxilla of minipigs and compare them with micro-rough grit-blasted, micro-rough acid-etched, and smooth as-machined titanium implants. The percent of bone-to-implant contact after 2, 4, 6, and 10 weeks of implantation as well as the mechanical retention after 4, and 6 weeks of implantation were evaluated with histometric and pull-out tests, respectively, as a measure of the osseointegration of the implants. We also aimed to assess the bioactive nature of 2Step surfaces in vivo. Our results demonstrated that the 2Step treatment produced micro-rough and bioactive implants that accelerated bone tissue regeneration and increased mechanical retention in the bone bed at short periods of implantation in comparison with all other implants tested. This was mostly attributed to the ability of 2Step implants to form in vivo a layer of apatitic mineral that coated the implant and could rapidly stimulate (a) bone nucleation directly on the implant surface, and (b) bone growing from the implant surface. We also proved that roughness values of Ra≈4.5 μm favoured osseointegration of dental implants at short- and mid-term healing periods, as grit-blasted implants and 2Step implants had higher retention values than as machined and acid-etched implants. The surface quality resulting from the 2Step treatment applied on cpTi provided dental implants with a unique combination of rapid bone regeneration and high mechanical retention.
Collapse
Affiliation(s)
- Conrado Aparicio
- Cátedra UPC-Klockner, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia, Barcelona, Spain
| | | | | |
Collapse
|
18
|
Hayes JS, Czekanska EM, Richards RG. The Cell–Surface Interaction. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2011; 126:1-31. [DOI: 10.1007/10_2011_110] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|