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Gruening M, Neuber S, Nestler P, Lehnfeld J, Dubs M, Fricke K, Schnabelrauch M, Helm CA, Müller R, Staehlke S, Nebe JB. Enhancement of Intracellular Calcium Ion Mobilization by Moderately but Not Highly Positive Material Surface Charges. Front Bioeng Biotechnol 2020; 8:1016. [PMID: 33015006 PMCID: PMC7505933 DOI: 10.3389/fbioe.2020.01016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 08/03/2020] [Indexed: 12/17/2022] Open
Abstract
Electrostatic forces at the cell interface affect the nature of cell adhesion and function; but there is still limited knowledge about the impact of positive or negative surface charges on cell-material interactions in regenerative medicine. Titanium surfaces with a variety of zeta potentials between −90 mV and +50 mV were generated by functionalizing them with amino polymers, extracellular matrix proteins/peptide motifs and polyelectrolyte multilayers. A significant enhancement of intracellular calcium mobilization was achieved on surfaces with a moderately positive (+1 to +10 mV) compared with a negative zeta potential (−90 to −3 mV). Dramatic losses of cell activity (membrane integrity, viability, proliferation, calcium mobilization) were observed on surfaces with a highly positive zeta potential (+50 mV). This systematic study indicates that cells do not prefer positive charges in general, merely moderately positive ones. The cell behavior of MG-63s could be correlated with the materials’ zeta potential; but not with water contact angle or surface free energy. Our findings present new insights and provide an essential knowledge for future applications in dental and orthopedic surgery.
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Affiliation(s)
- Martina Gruening
- Department of Cell Biology, Rostock University Medical Center, Rostock, Germany
| | - Sven Neuber
- Soft Matter and Biophysics, Institute of Physics, University of Greifswald, Greifswald, Germany
| | - Peter Nestler
- Soft Matter and Biophysics, Institute of Physics, University of Greifswald, Greifswald, Germany
| | - Jutta Lehnfeld
- Colloid and Interface Chemistry, Institute of Physical and Theoretical Chemistry, University of Regensburg, Regensburg, Germany
| | - Manuela Dubs
- Department of Biomaterials, INNOVENT e.V., Jena, Germany
| | - Katja Fricke
- Leibniz Institute for Plasma Science and Technology e.V. (INP), Greifswald, Germany
| | | | - Christiane A Helm
- Soft Matter and Biophysics, Institute of Physics, University of Greifswald, Greifswald, Germany
| | - Rainer Müller
- Colloid and Interface Chemistry, Institute of Physical and Theoretical Chemistry, University of Regensburg, Regensburg, Germany
| | - Susanne Staehlke
- Department of Cell Biology, Rostock University Medical Center, Rostock, Germany
| | - J Barbara Nebe
- Department of Cell Biology, Rostock University Medical Center, Rostock, Germany.,Department Science and Technology of Life, Light and Matter, Faculty of Interdisciplinary, University of Rostock, Rostock, Germany
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2
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Parfenova LV, Lukina ES, Galimshina ZR, Gil’fanova GU, Mukaeva VR, Farrakhov RG, Danilko KV, Dyakonov GS, Parfenov EV. Biocompatible Organic Coatings Based on Bisphosphonic Acid RGD-Derivatives for PEO-Modified Titanium Implants. Molecules 2020; 25:E229. [PMID: 31935900 PMCID: PMC6982944 DOI: 10.3390/molecules25010229] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 12/25/2019] [Accepted: 01/01/2020] [Indexed: 12/11/2022] Open
Abstract
Currently, significant attention is attracted to the problem of the development of the specific architecture and composition of the surface layer in order to control the biocompatibility of implants made of titanium and its alloys. The titanium surface properties can be tuned both by creating an inorganic sublayer with the desired morphology and by organic top coating contributing to bioactivity. In this work, we developed a composite biologically active coatings based on hybrid molecules obtained by chemical cross-linking of amino acid bisphosphonates with a linear tripeptide RGD, in combination with inorganic porous sublayer created on titanium by plasma electrolytic oxidation (PEO). After the addition of organic molecules, the PEO coated surface gets nobler, but corrosion currents increase. In vitro studies on proliferation and viability of fibroblasts, mesenchymal stem cells and osteoblast-like cells showed the significant dependence of the molecule bioactivity on the structure of bisphosphonate anchor and the linker. Several RGD-modified bisphosphonates of β-alanine, γ-aminobutyric and ε-aminocaproic acids with BMPS or SMCC linkers can be recommended as promising candidates for further in vivo research.
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Affiliation(s)
- Lyudmila V. Parfenova
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences, 141, Prospekt Oktyabrya, 450075 Ufa, Russia; (E.S.L.); (Z.R.G.); (G.U.G.)
| | - Elena S. Lukina
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences, 141, Prospekt Oktyabrya, 450075 Ufa, Russia; (E.S.L.); (Z.R.G.); (G.U.G.)
| | - Zulfia R. Galimshina
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences, 141, Prospekt Oktyabrya, 450075 Ufa, Russia; (E.S.L.); (Z.R.G.); (G.U.G.)
| | - Guzel U. Gil’fanova
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences, 141, Prospekt Oktyabrya, 450075 Ufa, Russia; (E.S.L.); (Z.R.G.); (G.U.G.)
| | - Veta R. Mukaeva
- Department of Theoretical Basis of Electrical Engineering, Ufa State Aviation Technical University, 12 Karl Marx Street, 450008 Ufa, Russia; (V.R.M.); (R.G.F.); (E.V.P.)
| | - Ruzil G. Farrakhov
- Department of Theoretical Basis of Electrical Engineering, Ufa State Aviation Technical University, 12 Karl Marx Street, 450008 Ufa, Russia; (V.R.M.); (R.G.F.); (E.V.P.)
| | - Ksenia V. Danilko
- Bashkir State Medical University, 3 Lenin Street, 450000 Ufa, Russia;
| | - Grigory S. Dyakonov
- Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, 12 Karl Marx Street, 450008 Ufa, Russia;
| | - Evgeny V. Parfenov
- Department of Theoretical Basis of Electrical Engineering, Ufa State Aviation Technical University, 12 Karl Marx Street, 450008 Ufa, Russia; (V.R.M.); (R.G.F.); (E.V.P.)
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3
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Yassin MA, Fuoco T, Mohamed-Ahmed S, Mustafa K, Finne-Wistrand A. 3D and Porous RGDC-Functionalized Polyester-Based Scaffolds as a Niche to Induce Osteogenic Differentiation of Human Bone Marrow Stem Cells. Macromol Biosci 2019; 19:e1900049. [PMID: 31050389 DOI: 10.1002/mabi.201900049] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 04/18/2019] [Indexed: 01/05/2023]
Abstract
Polyester-based scaffolds covalently functionalized with arginine-glycine-aspartic acid-cysteine (RGDC) peptide sequences support the proliferation and osteogenic differentiation of stem cells. The aim is to create an optimized 3D niche to sustain human bone marrow stem cell (hBMSC) viability and osteogenic commitment, without reliance on differentiation media. Scaffolds consisting of poly(lactide-co-trimethylene carbonate), poly(LA-co-TMC), and functionalized poly(lactide) copolymers with pendant thiol groups are prepared by salt-leaching technique. The availability of functional groups on scaffold surfaces allows for an easy and straightforward method to covalently attach RGDC peptide motifs without affecting the polymerization degree. The strategy enables the chemical binding of bioactive motifs on the surfaces of 3D scaffolds and avoids conventional methods that require harsh conditions. Gene and protein levels and mineral deposition indicate the osteogenic commitment of hBMSC cultured on the RGDC functionalized surfaces. The osteogenic commitment of hBMSC is enhanced on functionalized surfaces compared with nonfunctionalized surfaces and without supplementing media with osteogenic factors. Poly(LA-co-TMC) scaffolds have potential as scaffolds for osteoblast culture and bone grafts. Furthermore, these results contribute to the development of biomimetic materials and allow a deeper comprehension of the importance of RGD peptides on stem cell transition toward osteoblastic lineage.
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Affiliation(s)
- Mohammed A Yassin
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen, 56-58, SE, 100-44, Stockholm, Sweden.,Department of Clinical Dentistry, Årstadveien 19, 5009 Bergen, Bergen, Norway
| | - Tiziana Fuoco
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen, 56-58, SE, 100-44, Stockholm, Sweden
| | - Samih Mohamed-Ahmed
- Department of Clinical Dentistry, Årstadveien 19, 5009 Bergen, Bergen, Norway
| | - Kamal Mustafa
- Department of Clinical Dentistry, Årstadveien 19, 5009 Bergen, Bergen, Norway
| | - Anna Finne-Wistrand
- Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen, 56-58, SE, 100-44, Stockholm, Sweden
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4
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Zhang X, Geng H, Gong L, Zhang Q, Li H, Zhang X, Wang Y, Gao P. Modification of the surface of titanium with multifunctional chimeric peptides to prevent biofilm formation via inhibition of initial colonizers. Int J Nanomedicine 2018; 13:5361-5375. [PMID: 30254440 PMCID: PMC6143645 DOI: 10.2147/ijn.s170819] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Background Prevention of bacterial colonization remains a major challenge in the field of oral implant devices. Chimeric peptides with binding, antimicrobial, and osteogenesis motifs may provide a promising alternative for the inhibition of biofilm formation on titanium (Ti) surfaces. Methods In this study, chimeric peptides were designed by connecting an antimicrobial sequence from human β-defensin-3 with a Ti-binding sequence and arginine-glycine-aspartic acid using a glycine-glycine-glycine linker. Binding to the Ti substrate and antimicrobial properties against streptococci were evaluated. Significant improvement in reduction of bacterial colonization onto the Ti surface was observed, with or without the presence of saliva or serum. The MC3T3-E1 cells grew well on the modified Ti surfaces compared with the control group. Results The data showed that the three peptide functional motifs maintained their respective functions, and that the antibiofilm mechanism of the chimeric peptide was via suppression of sspA and sspB gene expression. Conclusion These results indicated that the endogenous peptide fragments engineered on the Ti surface could provide an environmentally friendly approach for improving the biocompatibility of oral implants.
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Affiliation(s)
- Xi Zhang
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, China, ,
| | - Hongjuan Geng
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, China, ,
| | - Lei Gong
- Department of Esophageal Cancer, Tianjin's Clinical Research Center for Cancer and Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300070, China
| | - Qian Zhang
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, China, ,
| | - Hongjie Li
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, China, ,
| | - Xu Zhang
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, China, ,
| | - Yonglan Wang
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, China, ,
| | - Ping Gao
- School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, China, ,
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5
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Karaman O, Kelebek S, Demirci EA, İbiş F, Ulu M, Ercan UK. Synergistic Effect of Cold Plasma Treatment and RGD Peptide Coating on Cell Proliferation over Titanium Surfaces. Tissue Eng Regen Med 2018; 15:13-24. [PMID: 30603531 PMCID: PMC6171635 DOI: 10.1007/s13770-017-0087-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 09/12/2017] [Accepted: 09/14/2017] [Indexed: 12/21/2022] Open
Abstract
The aim of this study was to investigate the synergistic effect of cold atmospheric plasma (CAP) treatment and RGD peptide coating for enhancing cellular attachment and proliferation over titanium (Ti) surfaces. The surface structure of CAP-treated and RGD peptide-coated Ti discs were characterized by contact angle goniometer and atomic force microscopy. The effect of such surface modification on human bone marrow derived mesenchymal stem cells (hMSCs) adhesion and proliferation was assessed by cell proliferation and DNA content assays. Besides, hMSCs' adhesion and morphology on surface modified Ti discs were observed via fluorescent and scanning electron microscopy. RGD peptide coating following CAP treatment significantly enhanced cellular adhesion and proliferation among untreated, CAP-treated and RGD peptide-coated Ti discs. The treatment of Ti surfaces with CAP may contribute to improved RGD peptide coating, which enables increased cellular integrations with the Ti surfaces.
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Affiliation(s)
- Ozan Karaman
- Tissue Engineering and Regenerative Medicine Laboratory, Department of Biomedical Engineering, Faculty of Engineering and Architecture, Rm 148, İzmir Katip Çelebi University, 35620 İzmir, Turkey
| | - Seyfi Kelebek
- Department of Oral and Maxillofacial Surgery, İzmir Katip Çelebi University, 35620 İzmir, Turkey
| | - Emine Afra Demirci
- Tissue Engineering and Regenerative Medicine Laboratory, Department of Biomedical Engineering, Faculty of Engineering and Architecture, Rm 148, İzmir Katip Çelebi University, 35620 İzmir, Turkey
| | - Fatma İbiş
- Plasma Medicine Laboratory, Department of Biomedical Engineering, Faculty of Engineering and Architecture, Rm 123, İzmir Katip Çelebi University, 35620 İzmir, Turkey
| | - Murat Ulu
- Department of Oral and Maxillofacial Surgery, İzmir Katip Çelebi University, 35620 İzmir, Turkey
| | - Utku Kürşat Ercan
- Plasma Medicine Laboratory, Department of Biomedical Engineering, Faculty of Engineering and Architecture, Rm 123, İzmir Katip Çelebi University, 35620 İzmir, Turkey
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6
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Bilem I, Plawinski L, Chevallier P, Ayela C, Sone ED, Laroche G, Durrieu MC. The spatial patterning of RGD and BMP-2 mimetic peptides at the subcellular scale modulates human mesenchymal stem cells osteogenesis. J Biomed Mater Res A 2017; 106:959-970. [DOI: 10.1002/jbm.a.36296] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 11/06/2017] [Accepted: 11/10/2017] [Indexed: 11/10/2022]
Affiliation(s)
- I. Bilem
- Laboratoire d'Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de Génie des Mines, de la Métallurgie et des Matériaux; Université Laval, 1065 Avenue de la médecine; Québec G1V 0A6 Canada
- Centre de Recherche du Centre Hospitalier Universitaire de Québec, Hôpital St-François d'Assise, 10 rue de l'Espinay; Québec G1L 3L5 Canada
- CNRS, Institute of Chemistry & Biology of Membranes & Nanoobjects (CBMN 5248); Pessac F-33600 France
- Bordeaux INP, CBMN, UMR 5248; Pessac F-33600 France
| | - L. Plawinski
- CNRS, Institute of Chemistry & Biology of Membranes & Nanoobjects (CBMN 5248); Pessac F-33600 France
- Bordeaux INP, CBMN, UMR 5248; Pessac F-33600 France
| | - P. Chevallier
- Laboratoire d'Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de Génie des Mines, de la Métallurgie et des Matériaux; Université Laval, 1065 Avenue de la médecine; Québec G1V 0A6 Canada
- Centre de Recherche du Centre Hospitalier Universitaire de Québec, Hôpital St-François d'Assise, 10 rue de l'Espinay; Québec G1L 3L5 Canada
| | - C. Ayela
- Université de Bordeaux, IMS, UMR CNRS 5218; Talence F-33400 France
| | - E. D. Sone
- Institute of Biomaterials and Biomedical Engineering, Department of Materials Science and Engineering, and Faculty of Dentistry; University of Toronto; Toronto ON M5S 3G9 Canada
| | - G. Laroche
- Laboratoire d'Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de Génie des Mines, de la Métallurgie et des Matériaux; Université Laval, 1065 Avenue de la médecine; Québec G1V 0A6 Canada
- Centre de Recherche du Centre Hospitalier Universitaire de Québec, Hôpital St-François d'Assise, 10 rue de l'Espinay; Québec G1L 3L5 Canada
| | - M. C. Durrieu
- CNRS, Institute of Chemistry & Biology of Membranes & Nanoobjects (CBMN 5248); Pessac F-33600 France
- Bordeaux INP, CBMN, UMR 5248; Pessac F-33600 France
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7
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Heller M, Kumar VV, Pabst A, Brieger J, Al-Nawas B, Kämmerer PW. Osseous response on linear and cyclic RGD-peptides immobilized on titanium surfaces in vitro and in vivo. J Biomed Mater Res A 2017; 106:419-427. [PMID: 28971567 DOI: 10.1002/jbm.a.36255] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 09/18/2017] [Accepted: 09/25/2017] [Indexed: 12/11/2022]
Abstract
Biomimetic surface modifications of titanium (Ti) implants using the Arg-Gly-Asp-sequence (RGD) are promising to accelerate bone healing in cases of medical implants. Therefore, we compared the impact of linear and cyclic RGD (l- and c-RGD) covalently coupled onto Ti surfaces on the osseous response in vitro and in vivo. In vitro, osteoblasts' behavior on different surfaces (unmodified, amino-silanized [APTES], l- and c-RGD) was analysed regarding adhesion (fluorescence microscopy), proliferation (resazurin stain) and differentiation (reverse transcription polymerase chain reaction on alkaline phosphatase and osteocalcin). In vivo, osteosynthesis screws (unmodified n = 8, l-RGD n = 8, c-RGD n = 8) were inserted into the proximal tibiae of 12 rabbits and evaluated for bone growth parameters (bone implant contact [%] and vertical bone apposition [VBA;%]) at 3 and 6 weeks. In vitro, c- as well as l-RGD surfaces stimulated osteoblasts' adherence, proliferation and differentiation in a similar manner, with only subtle evidence of superiority of the c-RGD modifications. In vivo, c-RGD-modifications led to a significantly increased VBA after 3 and 6 weeks. Thus, coating with c-RGD appears to play an important role influencing osteoblasts' behaviour in vitro but especially in vivo. These findings can be applied prospectively to implantable biomaterials with hypothetically improved survival and success rates. © 2017 Wiley Periodicals Inc. J Biomed Mater Res Part A: 106A: 419-427, 2018.
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Affiliation(s)
- M Heller
- Department of Otorhinolaryngology, University Medical Centre of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - V V Kumar
- Department of Oral, Maxillofacial and Plastic Surgery, University Medical Centre Rostock, Schillingallee 35, 18057, Rostock, Germany
| | - A Pabst
- Department of Oral, Maxillofacial and Plastic Surgery, Federal Armed Forces Hospital Koblenz, Germany
| | - J Brieger
- Department of Otorhinolaryngology, University Medical Centre of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - B Al-Nawas
- Department of Oral, Maxillofacial and Plastic Surgery, University Medical Centre Halle (Saale), Germany
| | - P W Kämmerer
- Department of Oral, Maxillofacial and Plastic Surgery, University Medical Centre Rostock, Schillingallee 35, 18057, Rostock, Germany
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8
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Adel-Khattab D, Giacomini F, Gildenhaar R, Berger G, Gomes C, Linow U, Hardt M, Peleska B, Günster J, Stiller M, Houshmand A, Ghaffar KA, Gamal A, El-Mofty M, Knabe C. Development of a synthetic tissue engineered three-dimensional printed bioceramic-based bone graft with homogenously distributed osteoblasts and mineralizing bone matrix in vitro. J Tissue Eng Regen Med 2017; 12:44-58. [PMID: 27860335 DOI: 10.1002/term.2362] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 08/11/2016] [Accepted: 11/09/2016] [Indexed: 11/11/2022]
Abstract
Over the last decade there have been increasing efforts to develop three-dimensional (3D) scaffolds for bone tissue engineering from bioactive ceramics with 3D printing emerging as a promising technology. The overall objective of the present study was to generate a tissue engineered synthetic bone graft with homogenously distributed osteoblasts and mineralizing bone matrix in vitro, thereby mimicking the advantageous properties of autogenous bone grafts and facilitating usage for reconstructing segmental discontinuity defects in vivo. To this end, 3D scaffolds were developed from a silica-containing calcium alkali orthophosphate, using, first, a replica technique - the Schwartzwalder-Somers method - and, second, 3D printing, (i.e. rapid prototyping). The mechanical and physical scaffold properties and their potential to facilitate homogenous colonization by osteogenic cells and extracellular bone matrix formation throughout the porous scaffold architecture were examined. Osteoblastic cells were dynamically cultured for 7 days on both scaffold types with two different concentrations of 1.5 and 3 × 109 cells/l. The amount of cells and bone matrix formed and osteogenic marker expression were evaluated using hard tissue histology, immunohistochemical and histomorphometric analysis. 3D-printed scaffolds (RPS) exhibited more micropores, greater compressive strength and silica release. RPS seeded with 3 × 109 cells/l displayed greatest cell and extracellular matrix formation, mineralization and osteocalcin expression. In conclusion, RPS displayed superior mechanical and biological properties and facilitated generating a tissue engineered synthetic bone graft in vitro, which mimics the advantageous properties of autogenous bone grafts, by containing homogenously distributed terminally differentiated osteoblasts and mineralizing bone matrix and therefore is suitable for subsequent in vivo implantation for regenerating segmental discontinuity bone defects. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Doaa Adel-Khattab
- Department of Experimental Orofacial Medicine, School of Dental Medicine, Philipps University, Marburg, Germany.,Department of Oral Periodontology, School of Dentistry, Ain Shams University, Egypt
| | - Francesca Giacomini
- Department of Experimental Orofacial Medicine, School of Dental Medicine, Philipps University, Marburg, Germany
| | - Renate Gildenhaar
- BAM Federal Institute for Materials Research and Testing, Berlin, Germany
| | - Georg Berger
- BAM Federal Institute for Materials Research and Testing, Berlin, Germany
| | - Cynthia Gomes
- BAM Federal Institute for Materials Research and Testing, Berlin, Germany
| | - Ulf Linow
- BAM Federal Institute for Materials Research and Testing, Berlin, Germany
| | - Martin Hardt
- Imaging Facility, Medical School, Justus Liebig University of Giessen
| | - Barbara Peleska
- Department of Prosthodontics, School of Dentistry, Philipps University, Marburg, Germany
| | - Jens Günster
- BAM Federal Institute for Materials Research and Testing, Berlin, Germany
| | - Michael Stiller
- Department of Experimental Orofacial Medicine, School of Dental Medicine, Philipps University, Marburg, Germany
| | - Alireza Houshmand
- Department of Experimental Orofacial Medicine, School of Dental Medicine, Philipps University, Marburg, Germany
| | - Khaled Abdel Ghaffar
- Department of Oral Periodontology, School of Dentistry, Ain Shams University, Egypt
| | - Ahmed Gamal
- Department of Oral Periodontology, School of Dentistry, Ain Shams University, Egypt
| | - Mohamed El-Mofty
- Department of Oral Periodontology, School of Dentistry, Ain Shams University, Egypt
| | - Christine Knabe
- Department of Experimental Orofacial Medicine, School of Dental Medicine, Philipps University, Marburg, Germany
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9
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Cao L, Wang L, Fan L, Xiao W, Lin B, Xu Y, Liang J, Cao B. RGDC Peptide-Induced Biomimetic Calcium Phosphate Coating Formed on AZ31 Magnesium Alloy. MATERIALS 2017; 10:ma10040358. [PMID: 28772717 PMCID: PMC5506929 DOI: 10.3390/ma10040358] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 03/19/2017] [Accepted: 03/24/2017] [Indexed: 01/23/2023]
Abstract
Magnesium alloys as biodegradable metal implants have received a lot of interest in biomedical applications. However, magnesium alloys have extremely high corrosion rates a in physiological environment, which have limited their application in the orthopedic field. In this study, calcium phosphate compounds (Ca–P) coating was prepared by arginine–glycine–aspartic acid–cysteine (RGDC) peptide-induced mineralization in 1.5 simulated body fluid (SBF) to improve the corrosion resistance and biocompatibility of the AZ31 magnesium alloys. The adhesion of Ca–P coating to the AZ31 substrates was evaluated by a scratch test. Corrosion resistance and cytocompatibility of the Ca–P coating were investigated. The results showed that the RGDC could effectively promote the nucleation and crystallization of the Ca–P coating and the Ca–P coating had poor adhesion to the AZ31 substrates. The corrosion resistance and biocompatibility of the biomimetic Ca–P coating Mg alloys were greatly improved compared with that of the uncoated sample.
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Affiliation(s)
- Lin Cao
- School of Stomatology, Lanzhou University, Lanzhou 730000, China.
| | - Lina Wang
- School of Stomatology, Lanzhou University, Lanzhou 730000, China.
| | - Lingying Fan
- School of Stomatology, Lanzhou University, Lanzhou 730000, China.
| | - Wenjun Xiao
- School of Stomatology, Lanzhou University, Lanzhou 730000, China.
| | - Bingpeng Lin
- School of Stomatology, Lanzhou University, Lanzhou 730000, China.
| | - Yimeng Xu
- School of Stomatology, Lanzhou University, Lanzhou 730000, China.
| | - Jun Liang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Baocheng Cao
- School of Stomatology, Lanzhou University, Lanzhou 730000, China.
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10
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Enhancing osteogenic differentiation of MC3T3-E1 cells by immobilizing RGD onto liquid crystal substrate. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:973-981. [DOI: 10.1016/j.msec.2016.11.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 10/01/2016] [Accepted: 11/02/2016] [Indexed: 01/01/2023]
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11
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Staruch R, Griffin MF, Butler P. Nanoscale Surface Modifications of Orthopaedic Implants: State of the Art and Perspectives. Open Orthop J 2016; 10:920-938. [PMID: 28217214 PMCID: PMC5299555 DOI: 10.2174/1874325001610010920] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Revised: 11/10/2015] [Accepted: 05/31/2016] [Indexed: 01/18/2023] Open
Abstract
Background: Orthopaedic implants such as the total hip or total knee replacement are examples of surgical interventions with postoperative success rates of over 90% at 10 years. Implant failure is associated with wear particles and pain that requires surgical revision. Improving the implant - bone surface interface is a key area for biomaterial research for future clinical applications. Current implants utilise mechanical, chemical or physical methods for surface modification. Methods: A review of all literature concerning the nanoscale surface modification of orthopaedic implant technology was conducted. Results: The techniques and fabrication methods of nanoscale surface modifications are discussed in detail, including benefits and potential pitfalls. Future directions for nanoscale surface technology are explored. Conclusion: Future understanding of the role of mechanical cues and protein adsorption will enable greater flexibility in surface control. The aim of this review is to investigate and summarise the current concepts and future directions for controlling the implant nanosurface to improve interactions.
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Affiliation(s)
- Rmt Staruch
- Department of Surgery & Interventional Science, University College London, London, England
| | - M F Griffin
- Department of Surgery & Interventional Science, University College London, London, England
| | - Pem Butler
- Department of Surgery & Interventional Science, University College London, London, England; University College London & The Royal Free Hospital, Pond Street, London, England
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RGD and BMP-2 mimetic peptide crosstalk enhances osteogenic commitment of human bone marrow stem cells. Acta Biomater 2016; 36:132-42. [PMID: 27000551 DOI: 10.1016/j.actbio.2016.03.032] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 02/19/2016] [Accepted: 03/17/2016] [Indexed: 12/16/2022]
Abstract
UNLABELLED Human bone marrow mesenchymal stem cells (hBMSCs) commitment and differentiation are dictated by bioactive molecules sequestered within their Extra Cellular Matrix (ECM). One common approach to mimic the physiological environment is to functionalize biomaterial surfaces with ECM-derived peptides able to recruit stem cells and trigger their linage-specific differentiation. The objective of this work was to investigate the effect of RGD and BMP-2 ligands crosstalk and density on the extent of hBMSCs osteogenic commitment, without recourse to differentiation medium. RGD peptide promotes cell adhesion via cell transmembrane integrin receptors, while BMP-2 peptide, corresponding to residues 73-92 of Bone Morphogenetic Protein-2, was shown to induce hBMSCs osteoblast differentiation. The immobilization of peptides on aminated glass was ascertained by X-ray Photoelectron Spectroscopy (XPS), the density of grafted peptides was quantified by fluorescence microscopy and the surface roughness was evaluated using Atomic Force Microscopy (AFM). The osteogenic commitment of hBMSCs cultured on RGD and/or BMP-2 surfaces was characterized by immunohistochemistry using STRO-1 as specific stem cells marker and Runx-2 as an earlier osteogenic marker. Biological results showed that the osteogenic commitment of hBMSCs was enhanced on bifunctionalized surfaces as compared to surfaces containing BMP-2, while on RGD surfaces cells mainly preserved their stemness character. These results demonstrated that RGD and BMP-2 mimetic peptides act synergistically to enhance hBMSCs osteogenesis without supplementing the media with osteogenic factors. These findings contribute to the development of biomimetic materials, allowing a deeper understanding of signaling pathways that govern the transition of stem cells towards the osteoblastic lineage. STATEMENT OF SIGNIFICANCE For a long time, scientists thought that the differentiation of Mesenchymal Stem Cells (MSCs) into bone cells was dictated by growth factors. This manuscript shed light on other ligands that play a crucial role in regulating MSCs fate. In concrete terms, it was demonstrated that the osteoinductive effect of BMP-2 peptide is 2 folds improved in the presence of adhesive RGD peptide. Compared to previous works highlighting this synergistic cooperation between RGD and BMP-2 peptides, the main strength of this work lies to the use of primitive human cells (hMSCs) and well-defined biomimetic material surfaces (controlled surface roughness and peptide densities). This work provides valuable insights to develop custom-designed in vitro cell culture models, capable of targeting the desired cell response.
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CHEN LIN, LI BAOLIN, XIAO XIAO, MENG QINGGANG, LI WEI, YU QIAN, BI JIAQI, CHENG YONG, QU ZHIWEI. Preparation and evaluation of an Arg-Gly-Asp-modified chitosan/hydroxyapatite scaffold for application in bone tissue engineering. Mol Med Rep 2015; 12:7263-70. [PMID: 26459053 PMCID: PMC4626170 DOI: 10.3892/mmr.2015.4371] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 08/07/2015] [Indexed: 11/26/2022] Open
Abstract
Bone tissue engineering has become a promising method for the repair of bone defects, and the production of a scaffold with high cell affinity and osseointegrative properties is crucial for successful bone substitute. Chitosan (CS)/hydroxyapatite (HA) composite was prepared by in situ compositing combined with lyophilization, and further modified by arginine‑glycine‑aspartic acid (RGD) via physical adsorption. In order to evaluate the cell adhesion rate, viability, morphology, and alkaline phosphatase (ALP) activity, the RGD‑CS/HA scaffold was seeded with bone marrow stromal cells (BMSCs). The osseointegrative properties of the RGD‑CS/HA scaffold were evaluated by in vivo heterotopic ossification and in vivo bone defect repair. After 4 h culture with the RGD‑CS/HA scaffold, the adhesion rate of the BMSCs was 80.7%. After 3 days, BMSCs were fusiform in shape and evenly distributed on the RGD‑CS/HA scaffold. Formation of extracellular matrix and numerous cell‑cell interactions were observed after 48 h of culture, with an ALP content of 0.006 ± 0.0008 U/l/ng. Furthermore, the osseointegrative ability and biomechanical properties of the RGD‑CS/HA scaffold were comparable to that of normal bone tissue. The biocompatibility, cytocompatibility, histocompatibility and osseointegrative properties of the RGD‑CS/HA scaffold support its use in bone tissue engineering applications.
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Affiliation(s)
- LIN CHEN
- Department of Pathogenic Microorganisms, The Second Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - BAOLIN LI
- Department of Orthopedic Surgery, The First Hospital of Harbin City, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - XIAO XIAO
- Department of Orthopedic Surgery, The First Hospital of Harbin City, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - QINGGANG MENG
- Department of Orthopedic Surgery, The First Hospital of Harbin City, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - WEI LI
- Department of Orthopedic Surgery, The First Hospital of Harbin City, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - QIAN YU
- Department of Orthopedics, The Fourth Affiliated Hospital, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - JIAQI BI
- Department of Orthopedic Surgery, The First Hospital of Harbin City, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - YONG CHENG
- Department of Orthopedic Surgery, The First Hospital of Harbin City, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - ZHIWEI QU
- Department of Orthopedic Surgery, The First Hospital of Harbin City, Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
- Correspondence to: Professor Zhiwei Qu, Department of Orthopaedic Surgery, The First Hospital of Harbin City, Harbin Medical University, 149 Mai Mai Street, Daoli, Harbin, Heilongjiang 150001, P.R. China, E-mail:
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Li A, Hokugo A, Yalom A, Berns EJ, Stephanopoulos N, McClendon MT, Segovia LA, Spigelman I, Stupp SI, Jarrahy R. A bioengineered peripheral nerve construct using aligned peptide amphiphile nanofibers. Biomaterials 2014; 35:8780-8790. [PMID: 25064803 DOI: 10.1016/j.biomaterials.2014.06.049] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 06/25/2014] [Indexed: 02/07/2023]
Abstract
Peripheral nerve injuries can result in lifelong disability. Primary coaptation is the treatment of choice when the gap between transected nerve ends is short. Long nerve gaps seen in more complex injuries often require autologous nerve grafts or nerve conduits implemented into the repair. Nerve grafts, however, cause morbidity and functional loss at donor sites, which are limited in number. Nerve conduits, in turn, lack an internal scaffold to support and guide axonal regeneration, resulting in decreased efficacy over longer nerve gap lengths. By comparison, peptide amphiphiles (PAs) are molecules that can self-assemble into nanofibers, which can be aligned to mimic the native architecture of peripheral nerve. As such, they represent a potential substrate for use in a bioengineered nerve graft substitute. To examine this, we cultured Schwann cells with bioactive PAs (RGDS-PA, IKVAV-PA) to determine their ability to attach to and proliferate within the biomaterial. Next, we devised a PA construct for use in a peripheral nerve critical sized defect model. Rat sciatic nerve defects were created and reconstructed with autologous nerve, PLGA conduits filled with various forms of aligned PAs, or left unrepaired. Motor and sensory recovery were determined and compared among groups. Our results demonstrate that Schwann cells are able to adhere to and proliferate in aligned PA gels, with greater efficacy in bioactive PAs compared to the backbone-PA alone. In vivo testing revealed recovery of motor and sensory function in animals treated with conduit/PA constructs comparable to animals treated with autologous nerve grafts. Functional recovery in conduit/PA and autologous graft groups was significantly faster than in animals treated with empty PLGA conduits. Histological examinations also demonstrated increased axonal and Schwann cell regeneration within the reconstructed nerve gap in animals treated with conduit/PA constructs. These results indicate that PA nanofibers may represent a promising biomaterial for use in bioengineered peripheral nerve repair.
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Affiliation(s)
- Andrew Li
- Division of Plastic and Reconstructive Surgery, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles CA, 90095-6960, USA
| | - Akishige Hokugo
- Division of Plastic and Reconstructive Surgery, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles CA, 90095-6960, USA
| | - Anisa Yalom
- Division of Plastic and Reconstructive Surgery, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles CA, 90095-6960, USA
| | - Eric J Berns
- Institute for Bionanotechnology in Medicine, Northwestern University, Evanston, IL, 60208, USA.,Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Nicholas Stephanopoulos
- Institute for Bionanotechnology in Medicine, Northwestern University, Evanston, IL, 60208, USA
| | - Mark T McClendon
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Luis A Segovia
- Division of Plastic and Reconstructive Surgery, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles CA, 90095-6960, USA
| | - Igor Spigelman
- Division of Oral Biology and Medicine, UCLA School of Dentistry, Los Angeles CA, 90095 USA
| | - Samuel I Stupp
- Institute for Bionanotechnology in Medicine, Northwestern University, Evanston, IL, 60208, USA.,Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.,Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA.,Department of Medicine, Northwestern University, Evanston, IL, 60208, USA
| | - Reza Jarrahy
- Division of Plastic and Reconstructive Surgery, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles CA, 90095-6960, USA
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Chen W, Liu J, Manuchehrabadi N, Weir MD, Zhu Z, Xu HHK. Umbilical cord and bone marrow mesenchymal stem cell seeding on macroporous calcium phosphate for bone regeneration in rat cranial defects. Biomaterials 2013; 34:9917-25. [PMID: 24054499 DOI: 10.1016/j.biomaterials.2013.09.002] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Accepted: 09/02/2013] [Indexed: 02/08/2023]
Abstract
Human umbilical cord mesenchymal stem cells (hUCMSCs) are inexhaustible and can be harvested at a low cost without an invasive procedure. However, there has been no report on comparing hUCMSCs with human bone marrow MSCs (hBMSCs) for bone regeneration in vivo. The aim of this study was to investigate hUCMSC and hBMSC seeding on macroporous calcium phosphate cement (CPC), and to compare their bone regeneration in critical-sized cranial defects in rats. Cell attachment, osteogenic differentiation and mineral synthesis on RGD-modified macroporous CPC were investigated in vitro. Scaffolds with cells were implanted in 8-mm defects of athymic rats. Bone regeneration was investigated via micro-CT and histological analysis at 4, 12, and 24 weeks. Three groups were tested: CPC with hUCMSCs, CPC with hBMSCs, and CPC control without cells. Percentage of live cells and cell density on CPC in vitro were similarly good for hUCMSCs and hBMSCs. Both cells had high osteogenic expressions of alkaline phosphatase, osteocalcin, collagen I, and Runx2. Bone mineral density and trabecular thickness in hUCMSC and hBMSC groups in vivo were greater than those of CPC control group. New bone amount for hUCMSC-CPC and hBMSC-CPC constructs was increased by 57% and 88%, respectively, while blood vessel density was increased by 15% and 20%, than CPC control group at 24 weeks. hUCMSC-CPC and hBMSC-CPC groups generally had statistically similar bone mineral density, new bone amount and vessel density. In conclusion, hUCMSCs seeded on CPC were shown to match the bone regeneration efficacy of hBMSCs in vivo for the first time. Both hUCMSC-CPC and hBMSC-CPC constructs generated much more new bone and blood vessels than CPC without cells. Macroporous RGD-grafted CPC with stem cell seeding is promising for craniofacial and orthopedic repairs.
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Affiliation(s)
- Wenchuan Chen
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China; Biomaterials & Tissue Engineering Division, Department of Endodontics, Prosthodontics and Operative Dentistry, University of Maryland Dental School, Baltimore, MD 21201, USA
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16
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Bruinink A, Bitar M, Pleskova M, Wick P, Krug HF, Maniura-Weber K. Addition of nanoscaled bioinspired surface features: A revolution for bone related implants and scaffolds? J Biomed Mater Res A 2013; 102:275-94. [PMID: 23468287 DOI: 10.1002/jbm.a.34691] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 01/16/2013] [Accepted: 02/11/2013] [Indexed: 11/08/2022]
Abstract
Our expanding ability to handle the "literally invisible" building blocks of our world has started to provoke a seismic shift on the technology, environment and health sectors of our society. During the last two decades, it has become increasingly evident that the "nano-sized" subunits composing many materials—living, natural and synthetic—are becoming more and more accessible for predefined manipulations at the nanosize scale. The use of equally nanoscale sized or functionalised tools may, therefore, grant us unprecedented prospects to achieve many therapeutic aims. In the past decade it became clear that nano-scale surface topography significantly influences cell behaviour and may, potentially, be utilised as a powerful tool to enhance the bioactivity and/ or integration of implanted devices. In this review, we briefly outline the state of the art and some of the current approaches and concepts for the future utilisation of nanotechnology to create biomimetic implantable medical devices and scaffolds for in vivo and in vitro tissue engineering,with a focus on bone. Based on current knowledge it must be concluded that not the materials and surfaces themselves but the systematic biological evaluation of these new material concepts represent the bottleneck for new biomedical product development based on nanotechnological principles.
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Affiliation(s)
- Arie Bruinink
- Empa, Swiss Federal Laboratories for Materials Testing and Research, Laboratory for Materials - Biology Interaction, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
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17
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Li D, Lu X, Lin H, Ren F, Leng Y. Chitosan/bovine serum albumin co-micropatterns on functionalized titanium surfaces and their effects on osteoblasts. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:489-502. [PMID: 23132401 DOI: 10.1007/s10856-012-4810-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 10/31/2012] [Indexed: 06/01/2023]
Abstract
Chitosan (CS)/bovine serum albumin (BSA) micropatterns were prepared on functionalized Ti surfaces by micro-transfer molding (μ-TM). μ-TM realized the spatially controlled immobilization of cells and offered a new way of studying the interaction between micropatterns and cells. Two kinds of micropatterns were produced: (1) microgrooves representing a discontinuously grooved co-micropattern, with the rectangular CS region separated by BSA walls; (2) microcylinders representing a continuously interconnected co-micropattern, with the net-like CS region separated by BSA cylinders. A comparison of cell behaviors on the two types of micropatterns indicated that the shape rather than the size had a dominant effect on cell proliferation. The micropattern size in the same range of cell diameters favored cell proliferation. However, cell differentiation was more sensitive to the size rather than to the shape of the micropatterns. In conclusion, cell behavior can be regulated by micropatterns integrating different materials.
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Affiliation(s)
- Dan Li
- Key Lab of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, China
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18
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Liu Q, Limthongkul W, Sidhu G, Zhang J, Vaccaro A, Shenck R, Hickok N, Shapiro I, Freeman T. Covalent attachment of P15 peptide to titanium surfaces enhances cell attachment, spreading, and osteogenic gene expression. J Orthop Res 2012; 30:1626-33. [PMID: 22504956 DOI: 10.1002/jor.22116] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Accepted: 03/15/2012] [Indexed: 02/04/2023]
Abstract
P15, a synthetic 15 amino acid peptide, mimics the cell-binding domain within the alpha-1 chain of human collagen is being tested in clinical trials to determine if it enhances bone formation in spinal fusions. We hypothesize that covalent attachment of P15 to titanium implants may also serve to promote osseointegration. To test this hypothesis, we measured osteoblast and mesenchymal cell adhesion, proliferation, and maturation on P15 tethered to a titanium (Ti-P15) surface. P15 peptide was covalently bonded to titanium alloy surfaces and incubated with osteoblast like cells. Cell toxicity, adhesion, spreading, and differentiation was then evaluated. Real-time quantitative PCR, Western blot analysis, and fluorescent immunohistochemistry was performed to measure osteoblast gene expression and differentiation. There was no evidence of toxicity. Significant increases in early cell attachment, spreading, and proliferation were observed on the Ti-P15 surface. Increased filapodial attachments, α(2) integrin expression, and phosphorylated focal adhesion kinase immunostaining indicated activation of integrin signaling pathways. qRT-PCR analysis indicated there was significant increase in osteogenic differentiation markers in cells grown on Ti-P15 compared to control-Ti. Western blotting confirmed these findings. Surface modification of titanium with P15 significantly increased cell attachment, spreading, osteogenic gene expression, and differentiation. Results of this study suggest that Ti-P15 has the potential to safely enhance bone formation and promote osseointegration of titanium implants.
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Affiliation(s)
- Qinyi Liu
- Department of Orthopedics, The Second Hospital of Jilin University, Chang Chun, Jilin, China
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19
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Hickok NJ, Shapiro IM. Immobilized antibiotics to prevent orthopaedic implant infections. Adv Drug Deliv Rev 2012; 64:1165-76. [PMID: 22512927 DOI: 10.1016/j.addr.2012.03.015] [Citation(s) in RCA: 179] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Revised: 03/08/2012] [Accepted: 03/20/2012] [Indexed: 12/17/2022]
Abstract
Many surgical procedures require the placement of an inert or tissue-derived implant deep within the body cavity. While the majority of these implants do not become colonized by bacteria, a small percentage develops a biofilm layer that harbors invasive microorganisms. In orthopaedic surgery, unresolved periprosthetic infections can lead to implant loosening, arthrodeses, amputations and sometimes death. The focus of this review is to describe development of an implant in which an antibiotic tethered to the metal surface is used to prevent bacterial colonization and biofilm formation. Building on well-established chemical syntheses, studies show that antibiotics can be linked to titanium through a self-assembled monolayer of siloxy amines. The stable metal-antibiotic construct resists bacterial colonization and biofilm formation while remaining amenable to osteoblastic cell adhesion and maturation. In an animal model, the antibiotic modified implant resists challenges by bacteria that are commonly present in periprosthetic infections. While the long-term efficacy and stability is still to be established, ongoing studies support the view that this novel type of bioactive surface has a real potential to mitigate or prevent the devastating consequences of orthopaedic infection.
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20
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Enhancement of bone regeneration through facile surface functionalization of solid freeform fabrication-based three-dimensional scaffolds using mussel adhesive proteins. Acta Biomater 2012; 8:2578-86. [PMID: 22480947 DOI: 10.1016/j.actbio.2012.03.041] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2011] [Revised: 03/03/2012] [Accepted: 03/27/2012] [Indexed: 01/14/2023]
Abstract
Solid freeform fabrication (SFF) is recognized as a promising tool for creating tissue engineering scaffolds due to advantages such as superior interconnectivity and highly porous structure. Despite structural support for SFF-based three-dimensional (3-D) scaffolds that can lead to tissue regeneration, lack of cell recognition motifs and/or biochemical factors has been considered a limitation. Previously, recombinant mussel adhesive proteins (MAPs) were successfully demonstrated to be functional cell adhesion materials on various surfaces due to their peculiar adhesive properties. Herein, MAPs were applied as surface functionalization materials to SFF-based 3-D polycaprolactone/poly(lactic-co-glycolic acid) scaffolds. We successfully coated MAPs onto scaffold surfaces by simply dipping the scaffolds into the MAP solution, which was confirmed through X-ray photoelectron spectroscopy and scanning electron microscopy analyses. Through in vitro study using human adipose tissue-derived stem cells (hADSCs), significant enhancement of cellular activities such as attachment, proliferation, and osteogenic differentiation was observed on MAP-coated 3-D scaffolds, especially on which fused arginine-glycine-aspartic acid peptides were efficiently exposed. In addition, we found that in vivo hADSC implantation with MAP-coated scaffolds enhanced bone regeneration in a rat calvarial defect model. These results collectively demonstrate that facile surface functionalization of 3-D scaffolds using MAP would be a promising strategy for successful tissue engineering applications.
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21
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Patel NG, Cavicchia JP, Zhang G, Zhang Newby BM. Rapid cell sheet detachment using spin-coated pNIPAAm films retained on surfaces by an aminopropyltriethoxysilane network. Acta Biomater 2012; 8:2559-67. [PMID: 22475785 DOI: 10.1016/j.actbio.2012.03.031] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Revised: 03/08/2012] [Accepted: 03/20/2012] [Indexed: 10/28/2022]
Abstract
The ability to harvest cell sheets grown on thermoresponsive polymers, such as poly(N-isopropylacrylamide) (pNIPAAm), has been widely studied for use in tissue engineering applications. pNIPAAm is of special interest because of the phase change that it undergoes in a physiologically relevant temperature range. Two primary approaches have been adopted to graft pNIPAAm chains covalently onto tissue culture polystyrene dishes: electron beam irradiation and plasma polymerization. These approaches often involve non-easily accessible (e.g. e-beam) facilities and complicated procedures that have hindered most tissue culture laboratories in adopting this technology for their specific applications. In this study, we developed a simple and cost-effective approach to create thermoresponsive surfaces using commercially available pNIPAAm. Using a simple spin-coating technique, thermoresponsive thin films were deposited on glass slides or silicon wafers using pNIPAAm blended with a small amount of 3-aminopropyltriethoxysilane (APTES), which enhances the retention of pNIPAAm on the surface. We found that the thermoresponsive films created using our method support cell attachment and proliferation without additional adhesive proteins as well as cell sheet detachment within minutes.
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22
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Shapiro IM, Hickok NJ, Parvizi J, Stewart S, Schaer TP. Molecular engineering of an orthopaedic implant: from bench to bedside. Eur Cell Mater 2012; 23:362-70. [PMID: 22623163 PMCID: PMC7092366 DOI: 10.22203/ecm.v023a28] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
The use of metallic implants has revolutionised the practice of orthopaedic surgery. While the safety and biocompatibility of these devices are excellent, a small percentage becomes infected. These infections are due to the formation of a biofilm that harbours bacteria encased in a complex extracellular matrix. The matrix serves as a barrier to immune surveillance as well as limiting the biocidal effects of systemic and local antibiotics. The objective of the review is to describe a novel approach to controlling implant infection using an antibiotic that is linked to titanium through a self-assembled monolayer of siloxy amines. We show that the hybrid-engineered surface is stable, biocompatible and resists colonisation by bacterial species most commonly associated with implant-related infections. Studies with rodent bone infection models suggest that the engineered titanium surface prevents bone infection. Results of a very recent investigation utilising a sheep model of infection indicate that the titanium-tethered antibiotic controls infection without compromising bone formation and remodelling. From all of these perspectives, the tethered antibiotic holds promise of providing a novel and practical approach to reducing implant-associated infections.
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Affiliation(s)
- I M Shapiro
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, PA, USA.
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23
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Huang Y, Luo Q, Li X, Zhang F, Zhao S. Fabrication and in vitro evaluation of the collagen/hyaluronic acid PEM coating crosslinked with functionalized RGD peptide on titanium. Acta Biomater 2012; 8:866-77. [PMID: 22040683 DOI: 10.1016/j.actbio.2011.10.020] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Revised: 10/13/2011] [Accepted: 10/13/2011] [Indexed: 11/28/2022]
Abstract
Surface modification of titanium (Ti) using biomolecules has attracted much attention recently. In this study, a new strategy has been employed to construct a stable and bioactive coating on Ti. To this end, a derivative of hyaluronic acid (HA), i.e. HA-GRGDSPC-(SH), was synthesized. The disulfide-crosslinked Arg-Gly-Asp (RGD)-containing collagen/hyaluronic acid polyelectrolyte membrane (PEM) coating was then fabricated on Ti through the alternate deposition of collagen and HA-GRGDSPC-(SH) with five assembly cycles and subsequent crosslinking via converting free sulphydryl groups into disulfide linkages (RGD-CHC-Ti group). The assembly processes for PEM coating and the physicochemical properties of the coating were carefully characterized. The stability of PEM coating in phosphate-buffered saline solution could be adjusted by the crosslinking degree, while its degradation behaviors in the presence of glutathione were glutathione concentration dependent. The adhesion and proliferation of MC3T3-E1 cells were significantly enhanced in the RGD-CHC-Ti group. Up-regulated bone specific genes, enhanced alkaline phosphatase activity and osteocalcin production, the increased areas of mineralization were also observed in the RGD-CHC-Ti group. These results indicate that the strategy employed herein may function as an effective way to construct stable, RGD-containing bioactive coatings on Ti.
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Affiliation(s)
- Ying Huang
- Department of Oral and Maxillofacial Surgery, The Affiliated Stomatology Hospital, College of Medicine, Zhejiang University, Hangzhou 310006, People's Republic of China
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Cao X, Yu WQ, Qiu J, Zhao YF, Zhang YL, Zhang FQ. RGD peptide immobilized on TiO2 nanotubes for increased bone marrow stromal cells adhesion and osteogenic gene expression. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:527-536. [PMID: 22143905 DOI: 10.1007/s10856-011-4479-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2011] [Accepted: 10/28/2011] [Indexed: 05/31/2023]
Abstract
Recently, TiO(2) nanotube layers are widely used in orthopedics and dental applications because of their good promotion effect on bone cells. Furthermore, peptide sequences such as arginine-glycine-aspartic acid are used to modify Ti implant for binding to cell surface integrins through motif. In this study, a cellular adhesive peptide of arginine-glycine-aspartic acid-cysteine (RGDC) was immobilized onto anodized TiO(2) nanotubes on Ti to examine its in vitro responses on rat bone marrow stromal cells (BMSCs). Materials were characterized by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy techniques. High-resolution C1s scans suggested the presence of RGDC on the surface and SEM images confirmed the nanotubes were not destroyed after modification. BMSCs adhesion and osteogenic gene expression were detected in TiO(2) nanotube layers with and without RGDC modification by fluorescence microscopy, confocal laser scanning microscopy, SEM, and realtime polymerase chain reaction (Real-time PCR). Results showed that the TiO(2) nanotube layers immobilized with RGDC increased BMSCs adhesion compared to nonfunctionalized nanotubes after 4 h of cultivation. Furthermore, the osteogenic gene expression of BMSCs was dramatically enhanced on the TiO(2) nanotube layers immobilized with RGDC (10 mM) compared to the TiO(2) nanotube layers immobilized with RGDC (1 mM) and non-functionalized anodized Ti. Our results from in vitro study provided evidence that Ti anodized to possess nanotubes and then further functionalized with RGDC should be further studied for the design of better biomedical implant surfaces.
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Affiliation(s)
- Xin Cao
- Department of Prosthodontics, School of Stomatology and Affiliated Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Heinemann S, Heinemann C, Jäger M, Neunzehn J, Wiesmann HP, Hanke T. Effect of silica and hydroxyapatite mineralization on the mechanical properties and the biocompatibility of nanocomposite collagen scaffolds. ACS APPLIED MATERIALS & INTERFACES 2011; 3:4323-4331. [PMID: 21942510 DOI: 10.1021/am200993q] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A recently established materials concept of biomimetic composites based on silica, collagen, and calcium phosphates was adapted for the preparation of porous scaffolds suitable for tissue engineering applications. Mineralization was achieved by directed nucleation of silica on the templating organic phase during a sol-gel process with or without addition of hydroxyapatite. Both mineral phases (25 wt %, individually or combined in equal shares) influenced the scaffold's morphology at the nanoscale. Enhancement of apparent density and compressive strength was similar for silica or hydroxyapatite mineralization; however the stiffening effect of hydroxyapatite was much higher. All scaffold modifications provided proper conditions for adhesion, proliferation, and osteogenic differentiation of human bone marrow stromal cells. The open porosity allowed cells to migrate throughout the scaffolds while maintaining their viability, both confirmed by MTT staining and confocal laser scanning microscopy. Initial cell distributions were graduated due to collagen mineralization, but balanced out over the cultivation time of 28 days. RT-PCR analyses revealed higher gene expression of ALP but lower expression of BSP II and osteocalcin because of collagen mineralization. The results demonstrate that both silica and hydroxyapatite offer comparable possibilities to tailor mechanical properties of collagen-based scaffolds without being detrimental to in vitro biocompatibility.
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Affiliation(s)
- S Heinemann
- Max Bergmann Center of Biomaterials and Institute of Materials Science, Technische Universität Dresden, Budapester Strasse 27, D-01069 Dresden, Germany.
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The relative importance of topography and RGD ligand density for endothelial cell adhesion. PLoS One 2011; 6:e21869. [PMID: 21779342 PMCID: PMC3136933 DOI: 10.1371/journal.pone.0021869] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Accepted: 06/08/2011] [Indexed: 11/21/2022] Open
Abstract
The morphology and function of endothelial cells depends on the physical and chemical characteristics of the extracellular environment. Here, we designed silicon surfaces on which topographical features and surface densities of the integrin binding peptide arginine-glycine-aspartic acid (RGD) could be independently controlled. We used these surfaces to investigate the relative importance of the surface chemistry of ligand presentation versus surface topography in endothelial cell adhesion. We compared cell adhesion, spreading and migration on surfaces with nano- to micro-scaled pyramids and average densities of 6×102–6×1011 RGD/mm2. We found that fewer cells adhered onto rough than flat surfaces and that the optimal average RGD density for cell adhesion was 6×105 RGD/mm2 on flat surfaces and substrata with nano-scaled roughness. Only on surfaces with micro-scaled pyramids did the topography hinder cell migration and a lower average RGD density was optimal for adhesion. In contrast, cell spreading was greatest on surfaces with 6×108 RGD/mm2 irrespectively of presence of feature and their size. In summary, our data suggest that the size of pyramids predominately control the number of endothelial cells that adhere to the substratum but the average RGD density governs the degree of cell spreading and length of focal adhesion within adherent cells. The data points towards a two-step model of cell adhesion: the initial contact of cells with a substratum may be guided by the topography while the engagement of cell surface receptors is predominately controlled by the surface chemistry.
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Variola F, Brunski J, Orsini G, de Oliveira PT, Wazen R, Nanci A. Nanoscale surface modifications of medically relevant metals: state-of-the art and perspectives. NANOSCALE 2011; 3:335-53. [PMID: 20976359 PMCID: PMC3105323 DOI: 10.1039/c0nr00485e] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Evidence that nanoscale surface properties stimulate and guide various molecular and biological processes at the implant/tissue interface is fostering a new trend in designing implantable metals. Cutting-edge expertise and techniques drawn from widely separated fields, such as nanotechnology, materials engineering and biology, have been advantageously exploited to nanoengineer surfaces in ways that control and direct these processes in predictable manners. In this review, we present and discuss the state-of-the-art of nanotechnology-based approaches currently adopted to modify the surface of metals used for orthopedic and dental applications, and also briefly consider their use in the cardiovascular field. The effects of nanoengineered surfaces on various in vitro molecular and cellular events are firstly discussed. This review also provides an overview of in vivo and clinical studies with nanostructured metallic implants, and addresses the potential influence of nanotopography on biomechanical events at interfaces. Ultimately, the objective of this work is to give the readership a comprehensive picture of the current advances, future developments and challenges in the application of the infinitesimally small to biomedical surface science. We believe that an integrated understanding of the in vitro and particularly of the in vivo behavior is mandatory for the proper exploitation of nanostructured implantable metals and, indeed, of all biomaterials.
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Affiliation(s)
- Fabio Variola
- Faculty of Engineering, Department of Mechanical Engineering, University of Ottawa, Ottawa, ON, K1N 6N5 (Canada)
- Laboratory for the Study of Calcified Tissues and Biomaterials, Faculté de Médecine Dentaire, Université de Montréal, Montréal, QC, H3C 3J7 (Canada)
| | - John Brunski
- Division of Plastic & Reconstructive Surgery, Department of Surgery PSRL, School of Medicine, Stanford University, 257 Campus Drive Stanford, CA 94305 (USA)
| | - Giovanna Orsini
- Department of Clinical Sciences and Stomatology, University of Marche, Via Tronto 10, 66026 Ancona (Italy)
| | - Paulo Tambasco de Oliveira
- Department of Morphology, Stomatology and Physiology, University of São Paulo, Ribeirão Preto, SP, 14040-904 (Brazil)
| | - Rima Wazen
- Laboratory for the Study of Calcified Tissues and Biomaterials, Faculté de Médecine Dentaire, Université de Montréal, Montréal, QC, H3C 3J7 (Canada)
| | - Antonio Nanci
- Laboratory for the Study of Calcified Tissues and Biomaterials, Faculté de Médecine Dentaire, Université de Montréal, Montréal, QC, H3C 3J7 (Canada)
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Kim BJ, Choi YS, Choi BH, Lim S, Song YH, Cha HJ. Mussel adhesive protein fused with cell adhesion recognition motif triggers integrin-mediated adhesion and signaling for enhanced cell spreading, proliferation, and survival. J Biomed Mater Res A 2010; 94:886-92. [PMID: 20336754 DOI: 10.1002/jbm.a.32768] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Adhesion of cells to a surface is a basic and important requirement in the fields of cell culture and tissue engineering. Previously, we constructed the cell adhesive, fp-151-RGD, by fusion of the hybrid mussel adhesive protein, fp-151, and GRGDSP peptide, one of the major cell adhesion recognition motifs; fp-151-RGD efficiently immobilized cells on coated culture surfaces with no protein and surface modifications, and apparently enhanced cell adhesion, proliferation, and spreading abilities. In the present study, we investigated the potential use of fp-151-RGD as a biomimetic extracellular matrix material at the molecular level by elucidating its substantial effects on integrin-mediated adhesion and signaling. Apoptosis derived from serum deprivation was significantly suppressed on the fp-151-RGD-coated surface, indicating that RGD-induced activation of integrin-mediated signaling triggers the pathway for cell survival. Analysis of the phosphorylation of focal adhesion kinase clearly demonstrated activation of focal adhesion kinase, a well-established indicator of integrin-mediated signaling, on the fp-151-RGD-coated surface, leading to significantly enhanced cell behaviors, including proliferation, spreading and survival, and consequently, more efficient cell culture.
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Affiliation(s)
- Bum Jin Kim
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang, Korea
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Choi BH, Choi YS, Kang DG, Kim BJ, Song YH, Cha HJ. Cell behavior on extracellular matrix mimic materials based on mussel adhesive protein fused with functional peptides. Biomaterials 2010; 31:8980-8. [DOI: 10.1016/j.biomaterials.2010.08.027] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2010] [Accepted: 08/16/2010] [Indexed: 12/16/2022]
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How do cells make decisions: engineering micro- and nanoenvironments for cell migration. JOURNAL OF ONCOLOGY 2010; 2010:363106. [PMID: 20652046 PMCID: PMC2905916 DOI: 10.1155/2010/363106] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2010] [Accepted: 04/01/2010] [Indexed: 11/17/2022]
Abstract
Cell migration contributes to cancer metastasis and involves cell adhesion to the extracellular matrix (ECM), force generation through the cell's cytoskeletal, and finally cell detachment. Both adhesive cues from the ECM and soluble cues from neighbouring cells and tissue trigger intracellular signalling pathways that are essential for cell migration. While the machinery of many signalling pathways is relatively well understood, how hierarchies of different and conflicting signals are established is a new area of cellular cancer research. We examine the recent advances in microfabrication, microfluidics, and nanotechnology that can be utilized to engineer micro- and nanoscaled cellular environments. Controlling both adhesive and soluble cues for migration may allow us to decipher how cells become motile, choose the direction for migration, and how oncogenic transformations influences these decision-making processes.
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Blinova MI, Yudintzeva NM, Nikolaenko NS, Potokin IL, Raykhtsaum G, Pitkin MR, Pinaev GP. Cell Cultivation on Porous Titanium Implants with Various Structures. CELL AND TISSUE BIOLOGY 2010; 4:572-579. [PMID: 21949585 PMCID: PMC3178890 DOI: 10.1134/s1990519x10060088] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The paper presents data on the cultivation of human dermal fibroblasts and rabbit mesenchymal stromal cells on two types of porous titanium implants, i.e., those with irregular pores formed by pressed titanium particles and those with regular pores formed by the cohesion of one-size titanium particles inside the implant. The goal of this study was to determine what type of titanium implant porosity ensured its strongest interaction with cells. Cells were cultivated on implants for 7 days. During this period, they formed a confluent monolayer on the implant surface. Cells grown on titanium implants were monitored by scanning electron microscopy. Fibroblasts interaction with implants depended on the implant porosity structure. On implants with irregular pores cells were more spread. On implants with regular pores fibroblasts enveloped particles and were only occasionally bound with neighboring particles by small outgrowths. There was no tight interaction of particles inside the implant. In implants formed by pressed particles, cells grow not only on surface, but also in the depth of the implant. Thus, we suppose that a tighter interaction of cells with the titanium implant and, supposedly, tissues with the implant in the organism will take place in the variant when the implant structure is formed by pressed titanium particles, i.e., cellular interaction was observed inside the implant. In implants with irregular pores, cells grew both on the surface and in the depth. Thus, cells exhibited more adequate interactions with irregular pore titanium implants in vitro and hopefully the same interaction will be true in tissues after the implantation of the prosthesis into the organism.
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Affiliation(s)
- M. I. Blinova
- Institute of Cytology of Russian Academy of Sciences, St. Petersburg, Russia
| | - N. M. Yudintzeva
- Institute of Cytology of Russian Academy of Sciences, St. Petersburg, Russia
| | - N. S. Nikolaenko
- Institute of Cytology of Russian Academy of Sciences, St. Petersburg, Russia
| | - I. L. Potokin
- Institute of Cytology of Russian Academy of Sciences, St. Petersburg, Russia
| | | | - M. R. Pitkin
- Poly-Orth International, Sharon, MA, USA
- Tufts University School of Medicine, Boston, MA, USA
| | - G. P. Pinaev
- Institute of Cytology of Russian Academy of Sciences, St. Petersburg, Russia
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Zhang F, Shi GS, Ren LF, Hu FQ, Li SL, Xie ZJ. Designer self-assembling peptide scaffold stimulates pre-osteoblast attachment, spreading and proliferation. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2009; 20:1475-1481. [PMID: 19214714 DOI: 10.1007/s10856-009-3700-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2008] [Accepted: 01/22/2009] [Indexed: 05/27/2023]
Abstract
A new peptide scaffold was made by mixing pure RADA16 (Ac-RADARADARADARADA-CONH2) and designer peptide RGDA16 (Ac-RADARGDARADARGDA-CONH2) solutions, and investigate any effect on attachment, spreading and proliferation of pre-osteoblast (MC3T3-E1). The peptides, RADA16 and RGDA16, were custom-synthesized. They were solubilized in deionized water at a concentration of 10 mg/ml (1% w/v), the RGDA16 peptide solution was mixed 1:1 with RADA16 solution and a new peptide solution RGDAmix was produced. The RGDAmix and RADA16 solution were directly loaded in 96-well plates and cover slips, and two different peptide scaffolds were formed with the addition of maintenance medium (alpha-MEM) in several minutes. About 1.0 x 10(4) MC3T3-E1 cells were seeded on each hydrogel scaffold, and then the cell morphological changes were observed using a fluorescence microscope at 1 h, 3 h and 24 h timepoint, respectively. Cell attachment was evaluated 1 h, 3 h and 24 h after cell seeding and cell proliferation was determined 4d, 7d and 14d after cell seeding. The RGDAmix scaffold significantly promoted the initial cell attachment compared with the RADA16 scaffold. MC3T3-E1 cells adhered and spread well on both scaffolds, however, cells spread better on the RGDAmix scaffold than on the RADA16 scaffold. Cell proliferation was greatly stimulated when cultured on RGDAmix scaffold. The RGD sequence contained peptide scaffold RGDAmix significantly enhances MC3T3-E1 cells attachment, spreading and proliferation.
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Affiliation(s)
- Feng Zhang
- Department of Oral and Maxillofacial Surgery, The Affiliated Stomatology Hospital, College of Medicine, Zhejiang University, 395# Yan'an Road, Hangzhou 310006, People's Republic of China
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Huang Z, Daniels RH, Enzerink RJ, Hardev V, Sahi V, Goodman SB. Effect of nanofiber-coated surfaces on the proliferation and differentiation of osteoprogenitors in vitro. Tissue Eng Part A 2009; 14:1853-9. [PMID: 18950272 DOI: 10.1089/ten.tea.2007.0399] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The osteoconductive property of titanium (Ti) surfaces is important in orthopedic and dental implant devices. Surface modifications of Ti have been proposed to further improve osseointegration. In this study, three different materials, silicon (Si), silicon oxide (SiO(2)), and titanium oxide (TiO(2)), were used to construct nanofibers for surface coating of Ti alloy Ti-6Al-4 V (Ti alloy). MC3T3-E1 osteoprogenitor cells were seeded on nanofiber-coated discs and cultured for 42 days. DNA, alkaline phosphatase, osteocalcin, and mineralization nodules were measured using PicoGreen, enzyme-linked immunosorbent assay, and calcein blue staining to detect the attachment, proliferation, differentiation, and mineralization of MC3T3-E1 cells, respectively. The results demonstrated that the initial cell attachments on nanofiber-coated discs were significantly lower, although cell proliferation on Si and SiO(2) nanofiber-coated discs was better than on Ti alloy surfaces. TiO(2) nanofibers facilitated a higher cellular differentiation capacity than Ti alloy and tissue culture-treated polystyrene surfaces. Thus, surface modification using nanofibers of various materials can alter the attachment, proliferation, and differentiation of osteoprogenitor cells in vitro.
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Affiliation(s)
- Zhinong Huang
- Department of Orthopedic Surgery, Stanford University Medical Center, Stanford, CA 94305, USA.
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Globus RK. Extracellular Matrix and Integrin Interactions in the Skeletal Responses to Mechanical Loading and Unloading. Clin Rev Bone Miner Metab 2007. [DOI: 10.1007/s12018-008-9013-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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