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Li X, Wu S, Feng Z, Ning K, Ji D, Yu L, Hu W. Label-Free and Real-Time Optical Detection of Affinity Binding of the Antibody on Adherent Live Cells. Anal Chem 2024; 96:1112-1120. [PMID: 38181398 DOI: 10.1021/acs.analchem.3c03899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2024]
Abstract
Oblique-incidence reflectivity difference (OIRD) is a novel real-time, label-free, and nondestructive optical detection method and exhibits encouraging application in the detection of antibody/DNA microarrays. In this study, for the first time, an OIRD label-free immunoassay was achieved by using adherent live cells as the probe. The cells were cultured on glass cells, and the affinity binding of antibodies targeted on the HLA class I antigen of the cell surface was detected with an OIRD. The results show that an OIRD is able to detect the binding process of anti-human HLA-A, B, and C antibodies on MDA-MB-231 cells and HUVEC cells. Control experiments and complementary fluorescence analysis confirmed the high detection specificity and good quantitative virtue of the OIRD label-free immunoassay. Label-free OIRD imaging analysis of cell microarrays was further demonstrated successfully, and the underlying optical mechanism was revealed by combining the theoretical modeling. This work explores the use of live cells as probes for an OIRD immunoassay, thus expanding the potential applications of the OIRD in the field of pathological analysis, disease diagnosis, and drug screening, among others.
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Affiliation(s)
- Xiaoyi Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials and Energy, Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Southwest University, Chongqing 400715, P. R. China
| | - Shiming Wu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials and Energy, Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Southwest University, Chongqing 400715, P. R. China
| | - Zhihao Feng
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials and Energy, Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Southwest University, Chongqing 400715, P. R. China
| | - Ke Ning
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials and Energy, Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Southwest University, Chongqing 400715, P. R. China
| | - Dandan Ji
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials and Energy, Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Southwest University, Chongqing 400715, P. R. China
| | - Ling Yu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials and Energy, Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Southwest University, Chongqing 400715, P. R. China
| | - Weihua Hu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Materials and Energy, Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Southwest University, Chongqing 400715, P. R. China
- Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, Key Laboratory of Functional Materials and Photoelectrochemistry of Haikou, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, P. R. China
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Reyes-Peces MV, Pérez-Moreno A, de-los-Santos DM, Mesa-Díaz MDM, Pinaglia-Tobaruela G, Vilches-Pérez JI, Fernández-Montesinos R, Salido M, de la Rosa-Fox N, Piñero M. Chitosan-GPTMS-Silica Hybrid Mesoporous Aerogels for Bone Tissue Engineering. Polymers (Basel) 2020; 12:polym12112723. [PMID: 33212958 PMCID: PMC7698430 DOI: 10.3390/polym12112723] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/13/2020] [Accepted: 11/14/2020] [Indexed: 01/10/2023] Open
Abstract
This study introduces a new synthesis route for obtaining homogeneous chitosan (CS)-silica hybrid aerogels with CS contents up to 10 wt%, using 3-glycidoxypropyl trimethoxysilane (GPTMS) as coupling agent, for tissue engineering applications. Aerogels were obtained using the sol-gel process followed by CO2 supercritical drying, resulting in samples with bulk densities ranging from 0.17 g/cm3 to 0.38 g/cm3. The textural analysis by N2-physisorption revealed an interconnected mesopore network with decreasing specific surface areas (1230-700 m2/g) and pore sizes (11.1-8.7 nm) by increasing GPTMS content (2-4 molar ratio GPTMS:CS monomer). In addition, samples exhibited extremely fast swelling by spontaneous capillary imbibition in PBS solution, presenting swelling capacities from 1.75 to 3.75. The formation of a covalent crosslinked hybrid structure was suggested by FTIR and confirmed by an increase of four hundred fold or more in the compressive strength up to 96 MPa. Instead, samples synthesized without GPTMS fractured at only 0.10-0.26 MPa, revealing a week structure consisted in interpenetrated polymer networks. The aerogels presented bioactivity in simulated body fluid (SBF), as confirmed by the in vitro formation of hydroxyapatite (HAp) layer with crystal size of approximately 2 µm size in diameter. In vitro studies revealed also non cytotoxic effect on HOB® osteoblasts and also a mechanosensitive response. Additionally, control cells grown on glass developed scarce or no stress fibers, while cells grown on hybrid samples showed a significant (p < 0.05) increase in well-developed stress fibers and mature focal adhesion complexes.
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Affiliation(s)
- María V. Reyes-Peces
- Department of Condensed Matter Physics 1, Faculty of Science, University of Cadiz, 11510 Cádiz, Spain; (M.V.R.-P.); (A.P.-M.); (N.d.l.R.-F.)
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), 11009 Cádiz, Spain; (G.P.-T.); (J.I.V.-P.); (R.F.-M.); (M.S.)
| | - A. Pérez-Moreno
- Department of Condensed Matter Physics 1, Faculty of Science, University of Cadiz, 11510 Cádiz, Spain; (M.V.R.-P.); (A.P.-M.); (N.d.l.R.-F.)
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), 11009 Cádiz, Spain; (G.P.-T.); (J.I.V.-P.); (R.F.-M.); (M.S.)
| | | | - María del Mar Mesa-Díaz
- Department of Chemical Engineering, Faculty of Science University of Cadiz, 11510 Cádiz, Spain;
- Instituto de Microscopía Electrónica y Materiales (IMEYMAT), University of Cadiz, 11510 Cádiz, Spain
| | - Gonzalo Pinaglia-Tobaruela
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), 11009 Cádiz, Spain; (G.P.-T.); (J.I.V.-P.); (R.F.-M.); (M.S.)
- Department of Histology, SCIBM, Faculty of Medicine University of Cadiz, 11004 Cádiz, Spain
| | - Jose Ignacio Vilches-Pérez
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), 11009 Cádiz, Spain; (G.P.-T.); (J.I.V.-P.); (R.F.-M.); (M.S.)
- Department of Histology, SCIBM, Faculty of Medicine University of Cadiz, 11004 Cádiz, Spain
| | - Rafael Fernández-Montesinos
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), 11009 Cádiz, Spain; (G.P.-T.); (J.I.V.-P.); (R.F.-M.); (M.S.)
- Department of Histology, SCIBM, Faculty of Medicine University of Cadiz, 11004 Cádiz, Spain
| | - Mercedes Salido
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), 11009 Cádiz, Spain; (G.P.-T.); (J.I.V.-P.); (R.F.-M.); (M.S.)
- Department of Histology, SCIBM, Faculty of Medicine University of Cadiz, 11004 Cádiz, Spain
| | - Nicolás de la Rosa-Fox
- Department of Condensed Matter Physics 1, Faculty of Science, University of Cadiz, 11510 Cádiz, Spain; (M.V.R.-P.); (A.P.-M.); (N.d.l.R.-F.)
- Instituto de Microscopía Electrónica y Materiales (IMEYMAT), University of Cadiz, 11510 Cádiz, Spain
| | - Manuel Piñero
- Department of Condensed Matter Physics 1, Faculty of Science, University of Cadiz, 11510 Cádiz, Spain; (M.V.R.-P.); (A.P.-M.); (N.d.l.R.-F.)
- Instituto de Microscopía Electrónica y Materiales (IMEYMAT), University of Cadiz, 11510 Cádiz, Spain
- Correspondence:
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Yao J, Liu Z, Ma W, Dong W, Wang Y, Zhang H, Zhang M, Sun D. Three-Dimensional Coating of SF/PLGA Coaxial Nanofiber Membranes on Surfaces of Calcium Phosphate Cement for Enhanced Bone Regeneration. ACS Biomater Sci Eng 2020; 6:2970-2984. [PMID: 33463266 DOI: 10.1021/acsbiomaterials.9b01729] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Calcium phosphate cements (CPCs) have been widely used for the study of bone regeneration because of their excellent physical and chemical properties, but poor biocompatibility and lack of osteoinductivity limit potential clinical applications. To overcome these limitations, and based on our previous research, CPC scaffolds were prepared with CPC as the principal material and polyethylene glycol (PEG) as a porogen to introduce interconnected macropores. Using a bespoke electrospinning auxiliary receiver, silk fibroin (SF)/poly(lactide-co-glycolide) (PLGA) coaxial nanofibers containing dexamethasone (DXM) and recombinant human bone morphogenetic protein-2 (rhBMP2) were fabricated which were coated on the surface of the CPC. By comparing the surface morphology by SEM, hydrophilicity, results of FTIR spectroscopy, and mechanical properties of the composite materials fabricated using different electrospinning times (20, 40, 60 min), the CPC surface constructed by electrospinning for 40 min was found to exhibit the most appropriate physical and chemical properties. Therefore, composite materials were built for further study by electrospinning for 40 min. The osteogenic capacity of the SF/PLGA/CPC, SF-DXM/PLGA/CPC, and SF-DXM/PLGA-rhBMP2/CPC scaffolds was evaluated by in vitro cell culture with rat bone marrow mesenchymal stem cells (BMSCs) and using a rat cranial defect repair model. ALP activity, calcium deposition levels, upregulation of osteogenic genes, and bone regeneration in skull defects in rats with SF-DXM/PLGA-rhBMP2/CPC implants were significantly higher than in rats implanted with the other scaffolds. These results suggest that drug-loaded coaxial nanofiber coatings prepared on a CPC surface can continuously and effectively release bioactive drugs and further stimulate osteogenesis. Therefore, the SF-DXM/PLGA-rhBMP2/CPC scaffolds prepared in this study demonstrated the most significant potential for the treatment of bone defects.
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Affiliation(s)
- Jihang Yao
- Norman Bethune First Hospital, Jilin University, Changchun 130021, P. R. China
| | - Zhewen Liu
- Norman Bethune First Hospital, Jilin University, Changchun 130021, P. R. China
| | - Wendi Ma
- Alan G. MacDiarmid Laboratory, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Wenying Dong
- Alan G. MacDiarmid Laboratory, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Yilong Wang
- Alan G. MacDiarmid Laboratory, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Haibo Zhang
- Alan G. MacDiarmid Laboratory, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Mei Zhang
- Alan G. MacDiarmid Laboratory, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Dahui Sun
- Norman Bethune First Hospital, Jilin University, Changchun 130021, P. R. China
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Leon-Ramos JR, Diosdado-Cano JM, López-Santos C, Barranco A, Torres-Lagares D, Serrera-Figallo MÁ. Influence of Titanium Oxide Pillar Array Nanometric Structures and Ultraviolet Irradiation on the Properties of the Surface of Dental Implants-A Pilot Study. NANOMATERIALS 2019; 9:nano9101458. [PMID: 31615097 PMCID: PMC6835777 DOI: 10.3390/nano9101458] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/04/2019] [Accepted: 10/10/2019] [Indexed: 12/16/2022]
Abstract
Aim: Titanium implants are commonly used as replacement therapy for lost teeth and much current research is focusing on the improvement of the chemical and physical properties of their surfaces in order to improve the osseointegration process. TiO2, when it is deposited in the form of pillar array nanometric structures, has photocatalytic properties and wet surface control, which, together with UV irradiation, provide it with superhydrophilic surfaces, which may be of interest for improving cell adhesion on the peri-implant surface. In this article, we address the influence of this type of surface treatment on type IV and type V titanium discs on their surface energy and cell growth on them. Materials and methods: Samples from titanium rods used for making dental implants were used. There were two types of samples: grade IV and grade V. In turn, within each grade, two types of samples were differentiated: untreated and treated with sand blasting and subjected to double acid etching. Synthesis of the film consisting of titanium oxide pillar array structures was carried out using plasma-enhanced chemical vapor deposition equipment. The plasma was generated in a quartz vessel by an external SLAN-1 microwave source with a frequency of 2.45 GHz. Five specimens from each group were used (40 discs in total). On the surfaces to be studied, the following determinations were carried out: (a) X-ray photoelectron spectroscopy, (b) scanning electron microscopy, (c) energy dispersive X-ray spectroscopy, (d) profilometry, (e) contact angle measurement or surface wettability, (f) progression of contact angle on applying ultraviolet irradiation, and (g) a biocompatibility test and cytotoxicity with cell cultures. Results: The application of ultraviolet light decreased the hydrophobicity of all the surfaces studied, although it did so to a greater extent on the surfaces with the studied modification applied, this being more evident in samples manufactured in grade V titanium. In samples made in grade IV titanium, this difference was less evident, and even in the sample manufactured with grade IV and SLA treatment, the application of the nanometric modification of the surface made the surface optically less active. Regarding cell growth, all the surfaces studied, grouped in relation to the presence or not of the nanometric treatment, showed similar growth. Conclusions. Treatment of titanium oxide surfaces with ultraviolet irradiation made them change temporarily into superhydrophilic ones, which confirms that their biocompatibility could be improved in this way, or at least be maintained.
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Affiliation(s)
- Juan-Rey Leon-Ramos
- Institute of Materials Science of Seville, CSIC-University of Seville, Américo Vespucio Street n 49, 41092 Seville, Spain.
| | | | - Carmen López-Santos
- Institute of Materials Science of Seville, CSIC-University of Seville, Américo Vespucio Street n 49, 41092 Seville, Spain.
- Department of Atomic, Molecular and Nuclear Physics, Faculty of Physics, University of Seville, Reina Mercedes Street, 41012 Seville, Spain.
| | - Angel Barranco
- Institute of Materials Science of Seville, CSIC-University of Seville, Américo Vespucio Street n 49, 41092 Seville, Spain.
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Kim S, Bark CW, Van Quy H, Seo S, Lim J, Lee J, Suh J, Lee Y, Um H, Kim Y. Photofunctionalizing effects of hydroxyapatite combined with TiO
2
on bone regeneration in rabbit calvarial defects. J Biomed Mater Res B Appl Biomater 2018; 107:1953-1959. [DOI: 10.1002/jbm.b.34288] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/12/2018] [Accepted: 11/04/2018] [Indexed: 01/21/2023]
Affiliation(s)
- Shin‐Young Kim
- Department of PeriodontologySchool of Dentistry, Kyungpook National University Daegu 41940 Republic of Korea
| | - Chung Wung Bark
- Department of Electrical EngineeringGachon University, Seongnam Gyeonggi 13120 Republic of Korea
| | - Hoang Van Quy
- Department of Electrical EngineeringGachon University, Seongnam Gyeonggi 13120 Republic of Korea
| | - Seung‐Jun Seo
- Department of PeriodontologySchool of Dentistry, A3DI, Kyungpook National University Daegu 41940 Republic of Korea
| | - Jae‐Hong Lim
- Industrial Technology Convergence Center, Pohang Accelerator Laboratory, POSTECH Pohang 37673 Gyeongbuk Republic of Korea
| | - Jae‐Mok Lee
- Department of PeriodontologySchool of Dentistry, Kyungpook National University Daegu 41940 Republic of Korea
| | - Jo‐Young Suh
- Department of PeriodontologySchool of Dentistry, Kyungpook National University Daegu 41940 Republic of Korea
| | - Youngkyun Lee
- Department of BiochemistrySchool of Dentistry, Kyungpook National University Daegu 41940 Republic of Korea
| | - Heung‐Sik Um
- Department of PeriodontologyResearch Institute for Oral Sciences, College of Dentistry, Gangneung‐Wonju National University Gangneung 25457 Republic of Korea
| | - Yong‐Gun Kim
- Department of PeriodontologySchool of Dentistry, Kyungpook National University Daegu 41940 Republic of Korea
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Deng LJ, Wu YL, He XH, Xie KN, Xie L, Deng Y. Simvastatin delivery on PEEK for bioactivity and osteogenesis enhancements. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2018; 29:2237-2251. [PMID: 30307376 DOI: 10.1080/09205063.2018.1534668] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
A strategy developed for obtaining positive cellular responses remains to be focused in the filed of functional biomimetics. In this study, a hydrogel covered simvastatin-loaded polyetheretherketone (PEEK) bio-composites was constructed with the purpose of bone tissue regeneration therapy. Briefly, a three-dimensional (3D) porous structure was fabricated on PEEK surface; then the substrate was functionalized with the poly(L-lactic acid)/simvastatin porous film and hyaluronic acid hydrogel subsequently. In vitro cell attachment, proliferation, and cytoskeletal observation experiments reveal that our scaffolds show better bio-affinity due to the layer of hyaluronic acid hydrogel compared with control. Furthermore, the alkaline phosphatase activity, calcium mineral deposition evaluation, and gene expression for osteogenic potential all exhibit that the superior osteogenic differentiation of MC3T3-E1 pre-osteoblasts on our scaffolds. Therefore, our PEEK samples loaded with simvastatin and covered with hyaluronic acid hydrogel hold great potential in clinical applications for bone repair.
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Affiliation(s)
- Li-Jun Deng
- a School of Chemical Engineering , Sichuan University , Chengdu , China
| | - Yan-Lin Wu
- b State Key Laboratory of Oral Diseases West China College of Stomatology , Sichuan University , Chengdu , China
| | - Xian-Hua He
- a School of Chemical Engineering , Sichuan University , Chengdu , China
| | - Ke-Nan Xie
- a School of Chemical Engineering , Sichuan University , Chengdu , China
| | - Lu Xie
- b State Key Laboratory of Oral Diseases West China College of Stomatology , Sichuan University , Chengdu , China
| | - Yi Deng
- a School of Chemical Engineering , Sichuan University , Chengdu , China.,c Department of Mechanical Engineering , The University of Hong Kong , Hong Kong , China
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Mesenchymal stromal cell and osteoblast responses to oxidized titanium surfaces pre-treated with λ = 808 nm GaAlAs diode laser or chlorhexidine: in vitro study. Lasers Med Sci 2017; 32:1309-1320. [PMID: 28551763 DOI: 10.1007/s10103-017-2243-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 05/19/2017] [Indexed: 12/15/2022]
Abstract
Preservation of implant biocompatibility following peri-implantitis treatments is a crucial issue in odontostomatological practice, being closely linked to implant re-osseointegration. Our aim was to assess the responses of osteoblast-like Saos2 cells and adult human bone marrow-mesenchymal stromal cells (MSCs) to oxidized titanium surfaces (TiUnite®, TiU) pre-treated with a 808 ± 10 nm GaAlAs diode laser operating in non-contact mode, in continuous (2 W, 400 J/cm2; CW) or pulsed (20 kHz, 7 μs, 0.44 W, 88 J/cm2; PW) wave, previously demonstrated to have a strong bactericidal effect and proposed as optional treatment for peri-implantitis. The biocompatibility of TiU surfaces pre-treated with chlorhexidine digluconate (CHX) was also evaluated. In particular, in order to mimic the in vivo approach, TiU surfaces were pre-treated with CHX (0.2%, 5 min); CHX and rinse; and CHX, rinse and air drying. In some experiments, the cells were cultured on untreated TiU before being exposed to CHX. Cell viability (MTS assay), proliferation (EdU incorporation assay; Ki67 confocal immunofluorescence analysis), adhesion (morphological analysis of actin cytoskeleton organization), and osteogenic differentiation (osteopontin confocal immunofluorescence analysis; mineralized bone-like nodule formation) analyses were performed. CHX resulted cytotoxic in all experimental conditions. Diode laser irradiation preserved TiU surface biocompatibility. Notably, laser treatment appeared even to improve the known osteoconductive properties of TiU surfaces. Within the limitations of an in vitro experimentation, this study contributes to provide additional experimental basis to support the potential use of 808 ± 10 nm GaAlAs diode laser at the indicated irradiation setting, in the treatment of peri-implantitis and to discourage the use of CHX.
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Salvador-Culla B, Jeong KJ, Kolovou PE, Chiang HH, Chodosh J, Dohlman CH, Kohane DS. Titanium Coating of the Boston Keratoprosthesis. Transl Vis Sci Technol 2016; 5:17. [PMID: 27152247 PMCID: PMC4855478 DOI: 10.1167/tvst.5.2.17] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 02/29/2016] [Indexed: 12/20/2022] Open
Abstract
Purpose We tested the feasibility of using titanium to enhance adhesion of the Boston Keratoprosthesis (B-KPro), ultimately to decrease the risk of implant-associated complications. Methods Cylindrical rods were made of poly(methyl methacrylate) (PMMA), PMMA coated with titanium dioxide (TiO2) over a layer of polydopamine (PMMATiO2), smooth (Ti) and sandblasted (TiSB) titanium, and titanium treated with oxygen plasma (Tiox and TiSBox). Topography and surface chemistry were analyzed by scanning electron microscopy (SEM), atomic force microscopy (AFM), and X-ray photoelectron spectroscopy (XPS). Adhesion force between rods and porcine corneas was measured ex vivo. Titanium sleeves, smooth and sandblasted, were inserted around the stem of the B-KPro and implanted in rabbits. Tissue adhesion to the stem was assessed and compared to an unmodified B-Kpro after 1 month. Results X-ray photoelectron spectroscopy demonstrated successful deposition of TiO2 on polydopamine-coated PMMA. Oxygen plasma treatment did not change the XPS spectra of titanium rods (Ti and TiSB), although it increased their hydrophilicity. The materials did not show cell toxicity. After 14 days of incubation, PMMATiO2, smooth titanium treated with oxygen plasma (Tiox), and sandblasted titanium rods (TiSB, TiSBox) showed significantly higher adhesion forces than PMMA ex vivo. In vivo, the use of a TiSB sleeve around the stem of the B-KPro induced a significant increase in tissue adhesion compared to a Ti sleeve or bare PMMA. Conclusions Sandblasted titanium sleeves greatly enhanced adherence of the B-KPro to the rabbit cornea. This approach may improve adhesion with the donor cornea in humans as well. Translational Relevance This approach may improve adhesion with donor corneas in humans.
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Affiliation(s)
- Borja Salvador-Culla
- Department of Ophthalmology Massachusetts Eye & Ear Infirmary, Harvard Medical School, Boston, MA, USA ; Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital Boston, Harvard Medical School, Boston, MA, USA ; David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Kyung Jae Jeong
- Department of Chemical Engineering, University of New Hampshire, Durham, NH, USA
| | - Paraskevi Evi Kolovou
- Department of Ophthalmology Massachusetts Eye & Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - Homer H Chiang
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital Boston, Harvard Medical School, Boston, MA, USA ; David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - James Chodosh
- Department of Ophthalmology Massachusetts Eye & Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - Claes H Dohlman
- Department of Ophthalmology Massachusetts Eye & Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - Daniel S Kohane
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital Boston, Harvard Medical School, Boston, MA, USA ; Department of Ophthalmology Massachusetts Eye & Ear Infirmary, Harvard Medical School, Boston, MA, USA
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Rodriguez-Palomo A, Monopoli D, Afonso H, Izquierdo-Barba I, Vallet-Regí M. Surface zwitterionization of customized 3D Ti6Al4V scaffolds: a promising alternative to eradicate bone infection. J Mater Chem B 2016; 4:4356-4365. [DOI: 10.1039/c6tb00675b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Surface zwitterionization provides new perspectives for custom-made Ti6Al4V EBM implants for bone tissue regeneration with antimicrobial properties.
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Affiliation(s)
- A. Rodriguez-Palomo
- Dpto. Química Inorgánica y Bioinorgánica
- Universidad Complutense de Madrid
- Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12
- 28040 Madrid
- Spain
| | - D. Monopoli
- Dpto. Ingeniería Biomédica
- Instituto Tecnológico de Canarias
- Spain
| | - H. Afonso
- Dpto. Ingeniería Biomédica
- Instituto Tecnológico de Canarias
- Spain
| | - I. Izquierdo-Barba
- Dpto. Química Inorgánica y Bioinorgánica
- Universidad Complutense de Madrid
- Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12
- 28040 Madrid
- Spain
| | - M. Vallet-Regí
- Dpto. Química Inorgánica y Bioinorgánica
- Universidad Complutense de Madrid
- Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12
- 28040 Madrid
- Spain
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Oulad-Zian Y, Sanchez-Valencia JR, Parra-Barranco J, Hamad S, Espinos JP, Barranco A, Ferrer J, Coll M, Borras A. Ultraviolet Pretreatment of Titanium Dioxide and Tin-Doped Indium Oxide Surfaces as a Promoter of the Adsorption of Organic Molecules in Dry Deposition Processes: Light Patterning of Organic Nanowires. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:8294-8302. [PMID: 26168350 DOI: 10.1021/acs.langmuir.5b01572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this article we present the preactivation of TiO2 and ITO by UV irradiation under ambient conditions as a tool to enhance the incorporation of organic molecules on these oxides by evaporation at low pressures. The deposition of π-stacked molecules on TiO2 and ITO at controlled substrate temperature and in the presence of Ar is thoroughly followed by SEM, UV-vis, XRD, RBS, and photoluminescence spectroscopy, and the effect is exploited for the patterning formation of small-molecule organic nanowires (ONWs). X-ray photoelectron spectroscopy (XPS) in situ experiments and molecular dynamics simulations add critical information to fully elucidate the mechanism behind the increase in the number of adsorption centers for the organic molecules. Finally, the formation of hybrid organic/inorganic semiconductors is also explored as a result of the controlled vacuum sublimation of organic molecules on the open thin film microstructure of mesoporous TiO2.
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Affiliation(s)
- Youssef Oulad-Zian
- †Nanotechnology on Surfaces Laboratory, Materials Science Institute of Seville (ICMS, CSIC-US), Avd. Americo Vespucio 49, 41092 Seville, Spain
| | - Juan R Sanchez-Valencia
- ‡Nanotech@surfaces Laboratory, EMPA, Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Julian Parra-Barranco
- †Nanotechnology on Surfaces Laboratory, Materials Science Institute of Seville (ICMS, CSIC-US), Avd. Americo Vespucio 49, 41092 Seville, Spain
| | - Said Hamad
- §Department of Physical, Chemical and Natural Systems, University Pablo de Olavide, Carretera de Utrera, km. 1, Seville, Spain
| | - Juan P Espinos
- †Nanotechnology on Surfaces Laboratory, Materials Science Institute of Seville (ICMS, CSIC-US), Avd. Americo Vespucio 49, 41092 Seville, Spain
| | - Angel Barranco
- †Nanotechnology on Surfaces Laboratory, Materials Science Institute of Seville (ICMS, CSIC-US), Avd. Americo Vespucio 49, 41092 Seville, Spain
| | - Javier Ferrer
- ∥Centro Nacional de Aceleradores (US-CSIC), Av. Thomas A. Edison, 7, 41092 Seville, Spain
| | - Mariona Coll
- ⊥Instituto de Ciència de Materiales de Barcelona, Consejo Superior de Investigaciones Cientı́ficas (ICMAB, CSIC), Campus UAB, 08193 Bellaterra, Spain
| | - Ana Borras
- †Nanotechnology on Surfaces Laboratory, Materials Science Institute of Seville (ICMS, CSIC-US), Avd. Americo Vespucio 49, 41092 Seville, Spain
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11
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UV-A and UV-C light induced hydrophilization of dental implants. Dent Mater 2015; 31:e157-67. [DOI: 10.1016/j.dental.2015.04.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 04/10/2015] [Accepted: 04/24/2015] [Indexed: 11/21/2022]
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12
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Izquierdo-Barba I, García-Martín JM, Álvarez R, Palmero A, Esteban J, Pérez-Jorge C, Arcos D, Vallet-Regí M. Nanocolumnar coatings with selective behavior towards osteoblast and Staphylococcus aureus proliferation. Acta Biomater 2015; 15:20-8. [PMID: 25573448 DOI: 10.1016/j.actbio.2014.12.023] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/16/2014] [Accepted: 12/23/2014] [Indexed: 11/19/2022]
Abstract
Bacterial colonization and biofilm formation on orthopedic implants is one of the worst scenarios in orthopedic surgery, in terms of both patient prognosis and healthcare costs. Tailoring the surfaces of implants at the nanoscale to actively promote bone bonding while avoiding bacterial colonization represents an interesting challenge to achieving better clinical outcomes. Herein, a Ti6Al4V alloy of medical grade has been coated with Ti nanostructures employing the glancing angle deposition technique by magnetron sputtering. The resulting surfaces have a high density of nanocolumnar structures, which exhibit strongly impaired bacterial adhesion that inhibits biofilm formation, while osteoblasts exhibit good cell response with similar behavior to the initial substrates. These results are discussed on the basis of a "lotus leaf effect" induced by the surface nanostructures and the different sizes and biological characteristics of osteoblasts and Staphylococcus aureus.
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Affiliation(s)
- Isabel Izquierdo-Barba
- Departamento de Química Inorgánica y Bioinorgánica, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - José Miguel García-Martín
- IMM-Instituto de Microelectrónica de Madrid (CNM-CSIC), Isaac Newton 8, PTM, E-28760 Tres Cantos, Madrid, Spain
| | - Rafael Álvarez
- Instituto de Ciencia de Materiales de Sevilla (CSIC-Universidad de Sevilla), Americo Vespucio 49, 41092 Seville, Spain
| | - Alberto Palmero
- Instituto de Ciencia de Materiales de Sevilla (CSIC-Universidad de Sevilla), Americo Vespucio 49, 41092 Seville, Spain
| | - Jaime Esteban
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Spain
| | - Concepción Pérez-Jorge
- Department of Clinical Microbiology, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Spain
| | - Daniel Arcos
- Departamento de Química Inorgánica y Bioinorgánica, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain.
| | - María Vallet-Regí
- Departamento de Química Inorgánica y Bioinorgánica, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain.
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13
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Shayan M, Jung Y, Huang PS, Moradi M, Plakseychuk AY, Lee JK, Shankar R, Chun Y. Improved osteoblast response to UV-irradiated PMMA/TiO2 nanocomposites with controllable wettability. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:2721-2730. [PMID: 25074833 DOI: 10.1007/s10856-014-5284-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 07/17/2014] [Indexed: 06/03/2023]
Abstract
Osteoblast response was evaluated with polymethylmethacrylate (PMMA)/titanium dioxide (TiO2) nanocomposite thin films that exhibit the controllable wettability with ultraviolet (UV) treatment. In this study, three samples of PMMA/TiO2 were fabricated with three different compositional volume ratios (i.e., 25/75, 50/50, and 75/25) followed by UV treatment for 0, 4, and 8 h. All samples showed the increased hydrophilicity after UV irradiation. The films fabricated with the greater amount of TiO2 and treated with the longer UV irradiation time increased the hydrophilicity more. The partial elimination of PMMA on the surface after UV irradiation created a durable hydrophilic surface by (1) exposing higher amount of TiO2 on the surface, (2) increasing the hydroxyl groups on the TiO2 surface, and (3) producing a mesoporous structure that helps to hold the water molecules on the surface longer. The partial elimination of PMMA on the surface was confirmed by Fourier transform infrared spectroscopy. Surface profiler and atomic force microscopy demonstrated the increased surface roughness after UV irradiation. Both scanning electron microscopy and energy-dispersive X-ray spectroscopy demonstrated that particles containing calcium and phosphate elements appeared on the 8 h UV-treated surface of PMMA/TiO2 25/75 samples after 4 days soaking in Dulbecco's Modified Eagle Medium. UV treatment showed the osteoblast adhesion improved on all the surfaces. While all UV-treated hydrophilic samples demonstrated the improvement of osteoblast cell adhesion, the PMMA/TiO2 25/75 sample after 8 h UV irradiation (n = 5, P value = 0.000) represented the best cellular response as compared to other samples. UV-treated PMMA/TiO2 nanocomposite thin films with controllable surface properties represent a high potential for the biomaterials used in both orthopedic and dental applications.
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Affiliation(s)
- Mahdis Shayan
- Department of Industrial Engineering, University of Pittsburgh, 522 Benedum Hall, Pittsburgh, PA, 15261, USA
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14
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Osteoconductive potential of barrier nanoSiO2 PLGA membranes functionalized by plasma enhanced chemical vapour deposition. BIOMED RESEARCH INTERNATIONAL 2014; 2014:253590. [PMID: 24883304 PMCID: PMC4026916 DOI: 10.1155/2014/253590] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 04/01/2014] [Indexed: 11/19/2022]
Abstract
The possibility of tailoring membrane surfaces with osteoconductive potential, in particular in biodegradable devices, to create modified biomaterials that stimulate osteoblast response should make them more suitable for clinical use, hopefully enhancing bone regeneration. Bioactive inorganic materials, such as silica, have been suggested to improve the bioactivity of synthetic biopolymers. An in vitro study on HOB human osteoblasts was performed to assess biocompatibility and bioactivity of SiO2 functionalized poly(lactide-co-glycolide) (PLGA) membranes, prior to clinical use. A 15 nm SiO2 layer was deposited by plasma enhanced chemical vapour deposition (PECVD), onto a resorbable PLGA membrane. Samples were characterized by X-ray photoelectron spectroscopy, atomic force microscopy, scanning electron microscopy, and infrared spectroscopy (FT-IR). HOB cells were seeded on sterilized test surfaces where cell morphology, spreading, actin cytoskeletal organization, and focal adhesion expression were assessed. As proved by the FT-IR analysis of samples, the deposition by PECVD of the SiO2 onto the PLGA membrane did not alter the composition and other characteristics of the organic membrane. A temporal and spatial reorganization of cytoskeleton and focal adhesions and morphological changes in response to SiO2 nanolayer were identified in our model. The novedous SiO2 deposition method is compatible with the standard sterilization protocols and reveals as a valuable tool to increase bioactivity of resorbable PLGA membranes.
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15
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Terriza A, Vilches-Pérez JI, González-Caballero JL, Orden EDL, Yubero F, Barranco A, Gonzalez-Elipe AR, Vilches J, Salido M. Osteoblasts Interaction with PLGA Membranes Functionalized with Titanium Film Nanolayer by PECVD. In vitro Assessment of Surface Influence on Cell Adhesion during Initial Cell to Material Interaction. MATERIALS 2014; 7:1687-1708. [PMID: 28788538 PMCID: PMC5453252 DOI: 10.3390/ma7031687] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 02/10/2014] [Accepted: 02/25/2014] [Indexed: 01/05/2023]
Abstract
New biomaterials for Guided Bone Regeneration (GBR), both resorbable and non-resorbable, are being developed to stimulate bone tissue formation. Thus, the in vitro study of cell behavior towards material surface properties turns a prerequisite to assess both biocompatibility and bioactivity of any material intended to be used for clinical purposes. For this purpose, we have developed in vitro studies on normal human osteoblasts (HOB®) HOB® osteoblasts grown on a resorbable Poly (lactide-co-glycolide) (PLGA) membrane foil functionalized by a very thin film (around 15 nm) of TiO2 (i.e., TiO2/PLGA membranes), designed to be used as barrier membrane. To avoid any alteration of the membranes, the titanium films were deposited at room temperature in one step by plasma enhanced chemical vapour deposition. Characterization of the functionalized membranes proved that the thin titanium layer completely covers the PLGA foils that remains practically unmodified in their interior after the deposition process and stands the standard sterilization protocols. Both morphological changes and cytoskeletal reorganization, together with the focal adhesion development observed in HOB osteoblasts, significantly related to TiO2 treated PLGA in which the Ti deposition method described has revealed to be a valuable tool to increase bioactivity of PLGA membranes, by combining cell nanotopography cues with the incorporation of bioactive factors.
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Affiliation(s)
- Antonia Terriza
- Nanotechnology on Surfaces Laboratory, Instituto de Ciencia de Materiales de Sevilla (CSIC-Univ. Sevilla), Avda. Americo Vespucio 49, E-41092 Seville, Spain.
| | - José I Vilches-Pérez
- Facultad de Medicina, Universidad de Cádiz, Servicios Centrales de Investigación en Ciencias de la Salud, Dr. Marañon 3. 11002 Cádiz, Spain.
| | - Juan L González-Caballero
- Facultad de Medicina, Universidad de Cádiz, Servicios Centrales de Investigación en Ciencias de la Salud, Dr. Marañon 3. 11002 Cádiz, Spain.
| | - Emilio de la Orden
- Facultad de Medicina, Universidad de Cádiz, Servicios Centrales de Investigación en Ciencias de la Salud, Dr. Marañon 3. 11002 Cádiz, Spain.
| | - Francisco Yubero
- Nanotechnology on Surfaces Laboratory, Instituto de Ciencia de Materiales de Sevilla (CSIC-Univ. Sevilla), Avda. Americo Vespucio 49, E-41092 Seville, Spain.
| | - Angel Barranco
- Nanotechnology on Surfaces Laboratory, Instituto de Ciencia de Materiales de Sevilla (CSIC-Univ. Sevilla), Avda. Americo Vespucio 49, E-41092 Seville, Spain.
| | - Agustín R Gonzalez-Elipe
- Nanotechnology on Surfaces Laboratory, Instituto de Ciencia de Materiales de Sevilla (CSIC-Univ. Sevilla), Avda. Americo Vespucio 49, E-41092 Seville, Spain.
| | - José Vilches
- Facultad de Medicina, Universidad de Cádiz, Servicios Centrales de Investigación en Ciencias de la Salud, Dr. Marañon 3. 11002 Cádiz, Spain.
| | - Mercedes Salido
- Facultad de Medicina, Universidad de Cádiz, Servicios Centrales de Investigación en Ciencias de la Salud, Dr. Marañon 3. 11002 Cádiz, Spain.
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16
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Logan N, Cross AJ, Traynor A, Bozec L, Parkin IP, Brett P. Mesenchymal stem cell response to UV-photofunctionalized TiO 2coated CoCrMo. RSC Adv 2014. [DOI: 10.1039/c4ra11524d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
UV photofunctionalization of TiO2coated implant surfaces enhanced markers of cell adhesion. This may prove to be advantageous for orthopaedic implants by supporting the colonisation and adhesion of cells capable of facilitating in bone healing.
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Affiliation(s)
- Niall Logan
- Biomaterials and Tissue Engineering
- University College London
- Eastman Dental Institute
- London, UK
| | | | | | - Laurent Bozec
- Biomaterials and Tissue Engineering
- University College London
- Eastman Dental Institute
- London, UK
| | - Ivan P. Parkin
- Department of Chemistry
- University College London
- London, UK
| | - Peter Brett
- Biomaterials and Tissue Engineering
- University College London
- Eastman Dental Institute
- London, UK
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17
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Leal-Egaña A, Díaz-Cuenca A, Boccaccini AR. Tuning of cell-biomaterial anchorage for tissue regeneration. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:4049-4057. [PMID: 24063035 DOI: 10.1002/adma.201301227] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Which mechanisms mediate cell attachment to biomaterials? What role does the surface charge or wettability play on cell-material anchorage? What are the currently investigated strategies to modify cell-matrix adherence spatiotemporally? Considering the development of scaffolds made of biocompatible materials to temporarily replace the structure and/or function of the extracellular matrix, focus is given to the analysis of the specific (i.e., cell adhesive peptide sequences) and unspecific (i.e., surface charge, wettability) mechanisms mediating cell-matrix interactions. Furthermore, because natural tissue regeneration is characterized by the dynamic attachment/detachment of different cell populations, the design of advanced scaffolds for tissue engineering, based in the spatiotemporal tuning of cell-matrix anchorage is discussed.
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Affiliation(s)
- Aldo Leal-Egaña
- Institute of Biomaterials, Friedrich-Alexander Universität Erlangen Nürnberg, Cauerstraße 6, 91058 Erlangen, Germany.
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