1
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Indirect electrochemical method for high accuracy quantification of protein adsorption on gold surfaces. Electrochem commun 2021. [DOI: 10.1016/j.elecom.2021.106961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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2
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Shamloo A, Sarmadi M. Investigation of the adhesive characteristics of polymer–protein systems through molecular dynamics simulation and their relation to cell adhesion and proliferation. Integr Biol (Camb) 2016; 8:1276-1295. [DOI: 10.1039/c6ib00159a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Amir Shamloo
- Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
| | - Morteza Sarmadi
- Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
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3
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Coelho NM, Llopis-Hernández V, Salmerón-Sánchez M, Altankov G. Dynamic Reorganization and Enzymatic Remodeling of Type IV Collagen at Cell-Biomaterial Interface. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2016; 105:81-104. [PMID: 27567485 DOI: 10.1016/bs.apcsb.2016.06.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Vascular basement membrane remodeling involves assembly and degradation of its main constituents, type IV collagen (Col IV) and laminin, which is critical during development, angiogenesis, and tissue repair. Remodeling can also occur at cell-biomaterials interface altering significantly the biocompatibility of implants. Here we describe the fate of adsorbed Col IV in contact with endothelial cells adhering on positively charged NH2 or hydrophobic CH3 substrata, both based on self-assembly monolayers (SAMs) and studied alone or mixed in different proportions. AFM studies revealed distinct pattern of adsorbed Col IV, varying from single molecular deposition on pure NH2 to network-like assembly on mixed SAMs, turning to big globular aggregates on bare CH3. Human umbilical endothelial cells (HUVECs) interact better with Col IV adsorbed as single molecules on NH2 surface and readily rearrange it in fibril-like pattern that coincide with secreted fibronectin fibrils. The cells show flattened morphology and well-developed focal adhesion complexes that are rich on phosphorylated FAK while expressing markedly low pericellular proteolytic activity. Conversely, on hydrophobic CH3 substrata HUVECs showed abrogated spreading and FAK phosphorylation, combined with less reorganization of the aggregated Col IV and significantly increased proteolytic activity. The later involves both MMP-2 and MMP-9, as measured by zymography and FITC-Col IV release. The mixed SAMs support intermediate remodeling activity. Taken together these results show that chemical functionalization combined with Col IV preadsorption provides a tool for guiding the endothelial cells behavior and pericellular proteolytic activity, events that strongly affect the fate of cardiovascular implants.
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Affiliation(s)
- N M Coelho
- Institute for Bioengineering of Catalonia (IBEC), Barcelona, Spain
| | - V Llopis-Hernández
- Center for Biomaterials and Tissue Engineering, Universidad Politécnica de Valencia, Valencia, Spain; School of Engineering, University of Glasgow, Glasgow, United Kingdom
| | | | - G Altankov
- Institute for Bioengineering of Catalonia (IBEC), Barcelona, Spain; Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain.
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4
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Butruk-Raszeja BA, Dresler MS, Kuźmińska A, Ciach T. Endothelialization of polyurethanes: Surface silanization and immobilization of REDV peptide. Colloids Surf B Biointerfaces 2016; 144:335-343. [PMID: 27110909 DOI: 10.1016/j.colsurfb.2016.04.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 04/05/2016] [Accepted: 04/07/2016] [Indexed: 01/19/2023]
Abstract
The paper presents method for chemical immobilization of arginine-glutamic acid-aspartic acid-valine (REDV) peptide on polyurethane surface. The peptide has been covalently bonded using silanes as a spacer molecules. The aim of this work was to investigate the proposed modification process and assess its biological effectiveness, especially in contact with blood and endothelial cells. Physicochemical properties were examined in terms of wettability, atomic composition and density of introduced functional groups and peptide molecules. Experiments with blood showed that material coating reduced number of surface-adhered platelets and fibrinogen molecules. In contrast to polyurethane (PU), there were no blood components deposited on REDV-modified materials (PU-REDV); fibrinogen adsorption on PU-REDV surface has been strongly reduced compared to PU. Analysis of cell adhesion after 1, 2, 3, 4, and 5 days of culture showed a significant increase of the cell-coated area on PU-REDV compared to PU. However, an intense cell growth appeared also on the control surface modified without the addition of REDV. Thus, the positive effect of REDV peptide on the adhesion of HUVEC could not be unequivocally confirmed.
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Affiliation(s)
- Beata A Butruk-Raszeja
- Laboratory of Biomedical Engineering, Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warynskiego 1, 00-645 Warsaw, Poland.
| | - Magdalena S Dresler
- Laboratory of Biomedical Engineering, Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warynskiego 1, 00-645 Warsaw, Poland
| | - Aleksandra Kuźmińska
- Laboratory of Biomedical Engineering, Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warynskiego 1, 00-645 Warsaw, Poland
| | - Tomasz Ciach
- Laboratory of Biomedical Engineering, Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warynskiego 1, 00-645 Warsaw, Poland; CEZAMAT PW, Polna 50, 00-644 Warsaw, Poland
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5
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Marín-Pareja N, Cantini M, González-García C, Salvagni E, Salmerón-Sánchez M, Ginebra MP. Different Organization of Type I Collagen Immobilized on Silanized and Nonsilanized Titanium Surfaces Affects Fibroblast Adhesion and Fibronectin Secretion. ACS APPLIED MATERIALS & INTERFACES 2015; 7:20667-20677. [PMID: 26322620 DOI: 10.1021/acsami.5b05420] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Silanization has emerged in recent years as a way to obtain a stronger and more stable attachment of biomolecules to metallic substrates. However, its impact on protein conformation, a key aspect that influences cell response, has hardly been studied. In this work, we analyzed by atomic force microscopy (AFM) the distribution and conformation of type I collagen on plasma-treated surfaces before and after silanization. Subsequently, we investigated the effect of the different collagen conformations on fibroblasts adhesion and fibronectin secretion by immunofluorescence analyses. Two different organosilanes were used on plasma-treated titanium surfaces, either 3-chloropropyl-triethoxy-silane (CPTES) or 3-glycidyloxypropyl-triethoxy-silane (GPTES). The properties and amount of the adsorbed collagen were assessed by contact angle, X-ray photoelectron spectroscopy, optical waveguide lightmode spectroscopy, and AFM. AFM studies revealed different conformations of type I collagen depending on the silane employed. Collagen was organized in fibrillar networks over very hydrophilic (plasma treated titanium) or hydrophobic (silanized with CPTES) surfaces, the latter forming little globules with a beads-on-a-string appearance, whereas over surfaces presenting an intermediate hydrophobic character (silanized with GPTES), collagen was organized into clusters with a size increasing at higher protein concentration in solution. Cell response was strongly affected by collagen conformation, especially at low collagen density. The samples exhibiting collagen organized in globular clusters (GPTES-functionalized samples) favored a faster and better fibroblast adhesion as well as better cell spreading, focal adhesions formation, and more pronounced fibronectin fibrillogenesis. In contrast, when a certain protein concentration was reached at the material surface, the effect of collagen conformation was masked, and similar fibroblast response was observed in all samples.
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Affiliation(s)
- Nathalia Marín-Pareja
- Biomaterials, Biomechanics, and Tissue Engineering Group, Department of Materials Science and Metallurgy, Universitat Politècnica de Catalunya. BarcelonaTech (UPC) , Av. Diagonal 647, 08028 Barcelona, Spain
| | - Marco Cantini
- Division of Biomedical Engineering, School of Engineering, University of Glasgow , Glasgow G12 8LT, U.K
| | - Cristina González-García
- Division of Biomedical Engineering, School of Engineering, University of Glasgow , Glasgow G12 8LT, U.K
| | - Emiliano Salvagni
- Biomaterials, Biomechanics, and Tissue Engineering Group, Department of Materials Science and Metallurgy, Universitat Politècnica de Catalunya. BarcelonaTech (UPC) , Av. Diagonal 647, 08028 Barcelona, Spain
| | - Manuel Salmerón-Sánchez
- Division of Biomedical Engineering, School of Engineering, University of Glasgow , Glasgow G12 8LT, U.K
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics, and Tissue Engineering Group, Department of Materials Science and Metallurgy, Universitat Politècnica de Catalunya. BarcelonaTech (UPC) , Av. Diagonal 647, 08028 Barcelona, Spain
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6
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Understanding and controlling type I collagen adsorption and assembly at interfaces, and application to cell engineering. Colloids Surf B Biointerfaces 2014; 124:87-96. [DOI: 10.1016/j.colsurfb.2014.08.029] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 08/21/2014] [Accepted: 08/22/2014] [Indexed: 02/01/2023]
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7
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Usharani N, Jayakumar GC, Rao JR, Chandrasekaran B, Nair BU. A microscopic evaluation of collagen-bilirubin interactions: in vitro surface phenomenon. J Microsc 2013; 253:109-18. [PMID: 24329396 DOI: 10.1111/jmi.12101] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 10/17/2013] [Indexed: 11/29/2022]
Abstract
This study is carried out to understand the morphology variations of collagen I matrices influenced by bilirubin. The characteristics of bilirubin interaction with collagen ascertained using various techniques like XRD, CLSM, fluorescence, SEM and AFM. These techniques are used to understand the distribution, expression and colocalization patterns of collagen-bilirubin complexes. The present investigation mimic the in vivo mechanisms created during the disorder condition like jaundice. Fluorescence technique elucidates the crucial role played by bilirubin deposition and interaction during collagen organization. Influence of bilirubin during collagen fibrillogenesis and banding patterns are clearly visualize using SEM. As a result, collagen-bilirubin complex provides different reconstructed patterns because of the influence of bilirubin concentration. Selectivity, specificity and spatial organization of collagen-bilirubin are determined through AFM imaging. Consequently, it is observed that the morphology and quantity of the bilirubin binding to collagen varied by the concentrations and the adsorption rate in protein solutions. Microscopic studies of collagen-bilirubin interaction confirms that bilirubin influence the fibrillogenesis and alter the rate of collagen organization depending on the bilirubin concentration. This knowledge helps to develop a novel drug to inhibit the interface point of interaction between collagen and bilirubin.
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Affiliation(s)
- N Usharani
- CSIR-Central Leather Research Institute, Council of Scientific and Industrial Research, Adyar, Chennai, 600 020, India
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Pastorino L, Dellacasa E, Scaglione S, Giulianelli M, Sbrana F, Vassalli M, Ruggiero C. Oriented collagen nanocoatings for tissue engineering. Colloids Surf B Biointerfaces 2013; 114:372-8. [PMID: 24246194 DOI: 10.1016/j.colsurfb.2013.10.026] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2013] [Revised: 10/11/2013] [Accepted: 10/16/2013] [Indexed: 12/11/2022]
Abstract
Collagens are among the most widely present and important proteins composing the human total body, providing strength and structural stability to various tissues, from skin to bone. In this paper, we report an innovative approach to bioactivate planar surfaces with oriented collagen molecules to promote cells proliferation and alignment. The Langmuir-Blodgett technique was used to form a stable collagen film at the air-water interface and the Langmuir-Schaefer deposition was adopted to transfer it to the support surface. The deposition process was monitored by estimating the mass of the protein layers after each deposition step. Collagen films were then structurally characterized by atomic force, scanning electron and fluorescent microscopies. Finally, collagen films were functionally tested in vitro. To this aim, 3T3 cells were seeded onto the silicon supports either modified or not (control) by collagen film deposition. Cells adhesion and proliferation on collagen films were found to be greater than those on control both after 1 (p<0.05) and 7 days culture. Moreover, the functionalization of the substrate surface triggered a parallel orientation of cells when cultured on it. In conclusion, these data demonstrated that the Langmuir-Schaefer technique can be successfully used for the deposition of oriented collagen films for tissue engineering applications.
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Affiliation(s)
- Laura Pastorino
- Department of Informatics, Bioengineering, Robotics and Systems Engineering, University of Genova, Via all'Opera Pia 13, 16145 Genova, Italy
| | - Elena Dellacasa
- Department of Informatics, Bioengineering, Robotics and Systems Engineering, University of Genova, Via all'Opera Pia 13, 16145 Genova, Italy
| | - Silvia Scaglione
- IEIIT-CNR, National Research Council, Via De Marini 6, 16149 Genoa, Italy.
| | - Massimo Giulianelli
- Department of Informatics, Bioengineering, Robotics and Systems Engineering, University of Genova, Via all'Opera Pia 13, 16145 Genova, Italy
| | - Francesca Sbrana
- IBF-CNR, National Research Council, Via De Marini 6, 16149 Genoa, Italy
| | - Massimo Vassalli
- IBF-CNR, National Research Council, Via De Marini 6, 16149 Genoa, Italy
| | - Carmelina Ruggiero
- Department of Informatics, Bioengineering, Robotics and Systems Engineering, University of Genova, Via all'Opera Pia 13, 16145 Genova, Italy
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9
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Jabaiah A, Wang X, Raman SK, Ragan R, Da Silva NA, Wang SW. Nanoscale architecture and cellular adhesion of biomimetic collagen substrates. J Biomater Appl 2013; 28:1354-65. [DOI: 10.1177/0885328213508328] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The ability to engineer bioactive sites within the biopolymer collagen has significant potential to dictate cellular microenvironments and processes. We have developed a novel recombinant DNA platform that enables such molecular-level control over this important material. In this investigation, we demonstrated the production of synthetic human collagen using yeast strains that were engineered with human prolyl hydroxylase α and β genes integrated into the genome and a codon-optimized collagen gene carried on a plasmid. To understand the extent to which this synthetic collagen can mimic native human collagen, we examined the relationships between the structural topology and physical stability with the ability to support adhesion of HT-1080 cells. Characterization of these biopolymers included evaluation using circular dichroism spectroscopy, atomic force microscopy, and MTT metabolic activity assays. Although the apparent melting temperatures of the recombinant collagens were ∼3–5℃ less than native sources, the recombinant and native collagens exhibited comparable triple helical structure, polymeric dimensions, adsorption on polystyrene, and cellular adhesion properties below their respective melting temperature values. These results support the feasibility of producing molecularly-engineered collagens that can mimic native substrates for therapeutic and tissue engineering applications.
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Affiliation(s)
- Abeer Jabaiah
- Department of Chemical Engineering and Materials Science, University of California, Irvine, CA, USA
| | - Xi Wang
- Department of Chemical Engineering and Materials Science, University of California, Irvine, CA, USA
| | - Senthil Kumar Raman
- Department of Chemical Engineering and Materials Science, University of California, Irvine, CA, USA
| | - Regina Ragan
- Department of Chemical Engineering and Materials Science, University of California, Irvine, CA, USA
| | - Nancy A Da Silva
- Department of Chemical Engineering and Materials Science, University of California, Irvine, CA, USA
| | - Szu-Wen Wang
- Department of Chemical Engineering and Materials Science, University of California, Irvine, CA, USA
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Stylianou A, Yova D. Surface nanoscale imaging of collagen thin films by Atomic Force Microscopy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:2947-57. [DOI: 10.1016/j.msec.2013.03.029] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Revised: 03/01/2013] [Accepted: 03/14/2013] [Indexed: 01/24/2023]
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11
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Zuyderhoff EM, Dupont-Gillain CC. Nano-organized collagen layers obtained by adsorption on phase-separated polymer thin films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:2007-2014. [PMID: 22149629 DOI: 10.1021/la203842q] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The organization of adsorbed type I collagen layers was examined on a series of polystyrene (PS)/poly(methyl methacrylate) (PMMA) heterogeneous surfaces obtained by phase separation in thin films. These thin films were prepared by spin coating from solutions in either dioxane or toluene of PS and PMMA in different proportions. Their morphology was unraveled combining the information coming from X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and water contact angle measurements. Substrates with PMMA inclusions in a PS matrix and, conversely, substrates with PS inclusions in a PMMA matrix were prepared, the inclusions being either under the form of pits or islands, with diameters in the submicrometer range. The organization of collagen layers obtained by adsorption on these surfaces was then investigated. On pure PMMA, the layer was quite smooth with assemblies of a few collagen molecules, while bigger assemblies were found on pure PS. On the heterogeneous surfaces, it appeared clearly that the diameter and length of collagen assemblies was modulated by the size and surface coverage of the PS domains. If the PS domains, either surrounding or surrounded by the PMMA phase, were above 600 nm wide, a heterogeneous distribution of collagen was found, in agreement with observations made on pure polymers. Otherwise, fibrils could be formed, that were longer compared to those observed on pure polymers. Additionally, the surface nitrogen content determined by XPS, which is linked to the protein adsorbed amount, increased roughly linearly with the PS surface fraction, whatever the size of PS domains, suggesting that adsorbed collagen amount on heterogeneous PS/PMMA surfaces is a combination of that observed on the pure polymers. This work thus shows that PS/PMMA surface heterogeneities can govern collagen organization. This opens the way to a better control of collagen supramolecular organization at interfaces, which could in turn allow cell-material interactions to be tailored.
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Affiliation(s)
- Emilienne M Zuyderhoff
- Université Catholique de Louvain (UCL), Institute of Condensed Matter and Nanosciences (IMCN), Division Bio & Soft Matter (BSMA), Croix du Sud 1(L7.04.01), B-1348 Louvain-la-Neuve, Belgium
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12
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Hansen RR, Tipnis AA, White-Adams TC, Di Paola JA, Neeves KB. Characterization of collagen thin films for von Willebrand factor binding and platelet adhesion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:13648-58. [PMID: 21967679 PMCID: PMC9028814 DOI: 10.1021/la2023727] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Von Willebrand factor (VWF) binding and platelet adhesion to subendothelial collagens are initial events in thrombus formation at sites of vascular injury. These events are often studied in vitro using flow assays designed to mimic vascular hemodynamics. Flow assays commonly employ collagen-functionalized substrates, but a lack of standardized methods of surface ligation limits their widespread use as a clinical diagnostic. Here, we report the use of collagen thin films (CTF) in flow assays. Thin films were grown on hydrophobic substrates from type I collagen solutions of increasing concentration (10, 100, and 1000 μg/mL). We found that the corresponding increase in fiber surface area determined the amount of VWF binding and platelet adhesion. The association rate constant (k(a)) of plasma VWF binding at a wall shear stress of 45 dyn/cm(2) was 0.3 × 10(5), 1.8 × 10(5), and 1.6 × 10(5) M(-1) s(-1) for CTF grown from 10, 100, and 1000 μg/mL solutions, respectively. We observed a 5-fold increase in VWF binding capacity with each 10-fold increase in collagen solution concentration. The association rates of Ser1731Thr and His1786Asp VWF mutants with collagen binding deficiencies were 9% and 22%, respectively, of wild-type rates. Using microfluidic devices for blood flow assays, we observed that CTF supported platelet adhesion at a wall shear rate of 1000 s(-1). CTF grown from 10 and 100 μg/mL solutions had variable levels of platelet surface coverage between multiple normal donors. However, CTF substrates grown from 1000 μg/mL solutions had reproducible surface coverage levels (74 ± 17%) between normal donors, and there was significantly diminished surface coverage from two type 1 von Willebrand disease patients (8.0% and 24%). These results demonstrate that collagen thin films are homogeneous and reproducible substrates that can measure dysfunctions in VWF binding and platelet adhesion under flow in a clinical microfluidic assay format.
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Affiliation(s)
- Ryan R. Hansen
- Department of Chemical and Biological Engineering, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Alena A. Tipnis
- Department of Chemical and Biological Engineering, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Tara C. White-Adams
- Department of Pediatrics, University of Colorado, Aurora, Colorado 80045, United States
| | - Jorge A. Di Paola
- Department of Pediatrics, University of Colorado, Aurora, Colorado 80045, United States
| | - Keith B. Neeves
- Department of Chemical and Biological Engineering, Colorado School of Mines, Golden, Colorado 80401, United States
- Department of Pediatrics, University of Colorado, Aurora, Colorado 80045, United States
- Corresponding Author: , Tel: 01-303-273-3191, Fax: 01-303-273-3730
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13
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VANDROVCOVÁ M, DOUGLAS T, HAUK D, GRÖSSNER-SCHREIBER B, WILTFANG J, BAČÁKOVÁ L, WARNKE PH. Influence of Collagen and Chondroitin Sulfate (CS) Coatings on Poly-(Lactide-co-Glycolide) (PLGA) on MG 63 Osteoblast-Like Cells. Physiol Res 2011; 60:797-813. [DOI: 10.33549/physiolres.931994] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Poly-(lactide-co-glycolide) (PLGA) is an FDA-approved biodegradable polymer which has been widely used as a scaffold for tissue engineering applications. Collagen has been used as a coating material for bone contact materials, but relatively little interest has focused on biomimetic coating of PLGA with extracellular matrix components such as collagen and the glycosaminoglycan chondroitin sulfate (CS). In this study, PLGA films were coated with collagen type I or collagen I with CS (collagen I/CS) to investigate the effect of CS on the behaviour of the osteoblastic cell line MG 63. Collagen I/CS coatings promoted a significant increase in cell number after 3 days (in comparison to PLGA) and after 7 days (in comparison to PLGA and collagen-coated PLGA). No influence of collagen I or collagen I/CS coatings on the spreading area after 1 day of culture was observed. However, the cells on collagen I/CS formed numerous filopodia and displayed well developed vinculin-containing focal adhesion plaques. Moreover, these cells contained a significantly higher concentration of osteocalcin, measured per mg of protein, than the cells on the pure collagen coating. Thus, it can be concluded that collagen I/CS coatings promote MG 63 cell proliferation, improve cell adhesion and enhance osteogenic cell differentiation.
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Affiliation(s)
| | | | | | | | | | - L. BAČÁKOVÁ
- Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
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14
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Coelho NM, González-García C, Salmerón-Sánchez M, Altankov G. Arrangement of type IV collagen on NH2 and COOH functionalized surfaces. Biotechnol Bioeng 2011; 108:3009-18. [DOI: 10.1002/bit.23265] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Revised: 07/04/2011] [Accepted: 07/06/2011] [Indexed: 01/27/2023]
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15
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Gugutkov D, González-García C, Altankov G, Salmerón-Sánchez M. Fibrinogen organization at the cell-material interface directs endothelial cell behavior. J BIOACT COMPAT POL 2011. [DOI: 10.1177/0883911511409020] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Fibrinogen (FG) adsorption on surfaces with controlled fraction of —OH groups was investigated with AFM and correlated to the initial interaction of primary endothelial cells (HUVEC). The —OH content was tailored making use of a family of copolymers consisting of ethyl acrylate (EA) and hydroxyl ethyl acrylate (HEA) in different ratios. The supramolecular distribution of FG changed from an organized network-like structure on the most hydrophobic surface (—OH 0) to dispersed molecular aggregate one as the fraction of —OH groups increases, indicating a different conformation by the adsorbed protein. The best cellular interaction was observed on the most hydrophobic (—OH 0) surface where FG assembled in a fibrin-like appearance in the absence of any thrombin. Likewise, focal adhesion formation and actin cytoskeleton development was poorer as the fraction of hydroxy groups on the surface was increased. The biological activity of the surface-induced FG network to provide 3D cues in a potential tissue engineered scaffold, making use of electrospun PEA fibers (—OH0), seeded with human umbilical vein endothelial cells was investigated. The FG assembled on the polymer fibers gave rise to a biologically active network able to direct cell orientation along the fibers (random or aligned), promote cytoskeleton organization and focal adhesion formation.
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Affiliation(s)
| | | | - George Altankov
- Institut de Bioenginyeria de Catalunya, Barcelona, Spain, ICREA (Institució Catalana de Recerca i Estudis Avançats), Catalonia, Spain
| | - Manuel Salmerón-Sánchez
- Center for Biomaterials and Tissue Engineering, Universidad Politécnica de Valencia, Spain, CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Valencia, Spain, Regenerative Medicine Unit, Centro de Investigación Príncipe Felipe, Valencia, Spain,
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16
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Huang CJ, Chien YL, Ling TY, Cho HC, Yu J, Chang YC. The influence of collagen film nanostructure on pulmonary stem cells and collagen-stromal cell interactions. Biomaterials 2010; 31:8271-80. [PMID: 20673998 PMCID: PMC7112499 DOI: 10.1016/j.biomaterials.2010.07.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Accepted: 07/07/2010] [Indexed: 12/29/2022]
Abstract
We have recently identified a rare subpopulation of lung colony cells with the characteristics of pulmonary stem cells, and discovered that stem cell colonies grew preferentially on type I collagen films in a serum-free medium. In order to further optimize culture conditions and determine stem cell growth in relation to microenvironments (including the stroma, medium and nanostructures of type I collagen films), both primary and pre-sorted stem cells were cultured on the type I collagen films with controllable degree of polymerization and film thickness, as confirmed by an atomic force microscope and surface profiler. We found that in a primary culture, the spreading of stromal cells is greatly restrained and both the size and number of colonies are significantly reduced on highly polymerized collagen films. In contrast, in a pre-sorted stem cell culture without stromal cells, the intrinsic stem cell properties and cell number are independent of the degree of collagen polymerization. Our results indicate that the nanostructures of type I collagen films primarily affect stem colony formation through the collagen-stroma interactions. In those cases, collagen film thickness shows no effect on colony formation.
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Affiliation(s)
- Chun-Jen Huang
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan
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17
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Hauser J, Zietlow J, Köller M, Esenwein SA, Halfmann H, Awakowicz P, Steinau HU. Enhanced cell adhesion to silicone implant material through plasma surface modification. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2009; 20:2541-2548. [PMID: 19641852 DOI: 10.1007/s10856-009-3826-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2009] [Accepted: 07/14/2009] [Indexed: 05/28/2023]
Abstract
Silicone implant material is widely used in the field of plastic surgery. Despite its benefits the lack of biocompatibility this material still represents a major problem. Due to the surface characteristics of silicone, protein adsorption and cell adhesion on this polymeric material is rather low. The aim of this study was to create a stable collagen I surface coating on silicone implants via glow-discharge plasma treatment in order to enhance cell affinity and biocompatibility of the material. Non-plasma treated, collagen coated and conventional silicone samples (non-plasma treated, non-coated) served as controls. After plasma treatment the change of surface free energy was evaluated by drop-shape analysis. The quality of the collagen coating was analysed by electron microscopy and Time-Of-Flight Secondary Ion Mass Spectrometry. For biocompatibility tests mouse fibroblasts 3T3 were cultivated on the different silicone surfaces and stained with calcein-AM and propidium iodine to evaluate cell viability and adherence. Analysis of the different surfaces revealed a significant increase in surface free energy after plasma pre-treatment. As a consequence, collagen coating could only be achieved on the plasma activated silicone samples. The in vitro tests showed that the collagen coating led to a significant increase in cell adhesion and cell viability.
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Affiliation(s)
- J Hauser
- Department of Plastic Surgery, BG Trauma Center Bergmannsheil, University Hospital, Bochum, Germany.
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18
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Dekeyser CM, Zuyderhoff E, Giuliano RE, Federoff HJ, Dupont-Gillain CC, Rouxhet PG. A rough morphology of the adsorbed fibronectin layer favors adhesion of neuronal cells. J Biomed Mater Res A 2008; 87:116-28. [DOI: 10.1002/jbm.a.31739] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bettinger CJ, Bruggeman JP, Borenstein JT, Langer RS. Amino alcohol-based degradable poly(ester amide) elastomers. Biomaterials 2008; 29:2315-25. [PMID: 18295329 PMCID: PMC2880180 DOI: 10.1016/j.biomaterials.2008.01.029] [Citation(s) in RCA: 132] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2007] [Accepted: 01/31/2008] [Indexed: 11/24/2022]
Abstract
Currently available synthetic biodegradable elastomers are primarily composed of crosslinked aliphatic polyesters, which suffer from deficiencies including (1) high crosslink densities, which results in exceedingly high stiffness, (2) rapid degradation upon implantation, or (3) limited chemical moieties for chemical modification. Herein, we have developed poly(1,3-diamino-2-hydroxypropane-co-polyol sebacate)s, a new class of synthetic, biodegradable elastomeric poly(ester amide)s composed of crosslinked networks based on an amino alcohol. These crosslinked networks feature tensile Young's modulus on the order of 1MPa and reversable elongations up to 92%. These polymers exhibit in vitro and in vivo biocompatibility. These polymers have projected degradation half-lives up to 20 months in vivo.
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Affiliation(s)
- Christopher J. Bettinger
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Room E25-342, Cambridge, MA 02139, USA
- Biomedical Engineering Center, Charles Stark Draper Laboratory, 555 Technology Square, Cambridge, MA 02139, USA
| | - Joost P. Bruggeman
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Room E25-342, Cambridge, MA 02139, USA
- Department of Plastic and Reconstructive Surgery, Erasmus Medical Center, Erasmus University Rotterdam, 3015 GE Rotterdam, The Netherlands
| | - Jeffrey T. Borenstein
- Biomedical Engineering Center, Charles Stark Draper Laboratory, 555 Technology Square, Cambridge, MA 02139, USA
| | - Robert S. Langer
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Room E25-342, Cambridge, MA 02139, USA
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Bettinger CJ, Zhang Z, Gerecht S, Borenstein JT, Langer R. Enhancement of In Vitro Capillary Tube Formation by Substrate Nanotopography. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2008; 20:99-103. [PMID: 19440248 PMCID: PMC2680548 DOI: 10.1002/adma.200702487] [Citation(s) in RCA: 115] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Affiliation(s)
- Christopher J. Bettinger
- Biomedical Engineering Center, Charles Stark Draper Laboratory 555 Technology Square, Cambridge, MA 02139 (USA)
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Room E25-342, 77 Massachusetts Avenue, Cambridge, MA 02139, (USA)
| | - Zhitong Zhang
- Department of Chemical Engineering, Massachusetts Institute of Technology, Room E25-342, 77 Massachusetts Avenue, Cambridge, MA 02139, (USA)
| | - Sharon Gerecht
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Maryland Hall 216, 3400 North Charles Street, Baltimore, MD, 21218 (USA)
| | - Jeffrey T. Borenstein
- Biomedical Engineering Center, Charles Stark Draper Laboratory, 555 Technology Square, Cambridge, MA 02139 (USA)
| | - Robert Langer
- Department of Chemical Engineering, Massachusetts Institute of Technology, Room E25-342, 77 Massachusetts Avenue, Cambridge, MA 02139, (USA)
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Wan LS, Xu ZK, Huang XJ, Huang XD, Yao K. Cytocompatibility of poly(acrylonitrile-co-N-vinyl-2-pyrrolidone) membranes with human endothelial cells and macrophages. Acta Biomater 2007; 3:183-90. [PMID: 17150422 DOI: 10.1016/j.actbio.2006.09.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2006] [Revised: 09/13/2006] [Accepted: 09/15/2006] [Indexed: 11/22/2022]
Abstract
Polyacrylonitrile modified with N-vinyl-2-pyrrolidone (NVP) shows good hemocompatibility. This work, which aims to evaluate the cytocompatibility of membranes fabricated from poly(acrylonitrile-co-N-vinyl-2-pyrrolidone) (PANCNVP), studied the adhesion of macrophages and endothelial cell (EC) cultures. It was found that PANCNVP membranes with higher NVP content decreased the adhesion of both macrophages and ECs. Compared with polyacrylonitrile and tissue culture polystyrene control, however, these PANCNVP membranes promoted the proliferation of ECs. Furthermore, the viability of ECs cultured on the PANCNVP membrane surfaces was also relatively competitive. Both static and dynamic water contact angle measurements were conducted to explain the nature of cell adhesion to the PANCNVP membranes. On the basis of these results and the phenomena of water swelling and water states reported previously, it was presumed that the coexistence of large amounts of bound water and free water induced by NVP moieties are responsible for the lower adhesion and better function of cells adhering to the PANCNVP membranes.
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Affiliation(s)
- Ling-Shu Wan
- Institute of Polymer Science, and Key Laboratory of Macromolecular Synthesis and Functionalization (Ministry of Education), Zhejiang University, Hangzhou 310027, China
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Gurdak E, Rouxhet PG, Dupont-Gillain CC. Factors and mechanisms determining the formation of fibrillar collagen structures in adsorbed phases. Colloids Surf B Biointerfaces 2006; 52:76-88. [PMID: 16930958 DOI: 10.1016/j.colsurfb.2006.07.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2006] [Revised: 07/04/2006] [Accepted: 07/18/2006] [Indexed: 11/22/2022]
Abstract
The adsorption of collagen (type I from calf skin) was studied, comparing different collagen sources and using substrates which differ according to surface hydrophobicity (polystyrene, either native, with OH substitution of each repeat unit, with COOH substitution of a small fraction of repeat units, or surface modified by oxygen plasma discharge). The atomic force microscopy observation of the adsorbed layers showed that aggregation in the solution acts in competition with the formation of fibrils in the adsorbed phase; more aggregated solutions behave like less concentrated solutions regarding adsorption. The fibrils formed in the adsorbed phase are much smaller than the fibrils formed in the suspension, and, in contrast with the latter, do not show regular band pattern. It is confirmed that fibrils formation occurs more readily on more hydrophobic surfaces, which is tentatively attributed to a greater mobility of individual molecules adsorbed on more hydrophobic substrates. This interpretation is supported by previously published radiochemical measurements. However, the comparison of strongly different adsorption procedures (progressive on the one hand; quick and massive on the other hand) did not provide any additional clue.
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Affiliation(s)
- Elzbieta Gurdak
- Unité de Chimie des Interfaces, Université Catholique de Louvain, Croix du Sud 2/18, 1348 Louvain-la-Neuve, Belgium
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