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Raptopoulos M, Fischer NG, Aparicio C. Implant surface physicochemistry affects keratinocyte hemidesmosome formation. J Biomed Mater Res A 2023; 111:1021-1030. [PMID: 36621832 DOI: 10.1002/jbm.a.37486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 08/04/2022] [Accepted: 12/05/2022] [Indexed: 01/10/2023]
Abstract
Previous studies have shown hydrophilic/hydrophobic implant surfaces stimulate/hinder osseointegration. An analogous concept was applied here using common biological functional groups on a model surface to promote oral keratinocytes (OKs) proliferation and hemidesmosomes (HD) to extend implant lifespans through increased soft tissue attachment. However, it is unclear what physicochemistry stimulates HDs. Thus, common biological functional groups (NH2 , OH, and CH3 ) were functionalized on glass using silanization. Non-functionalized plasma-cleaned glass and H silanization were controls. Surface modifications were confirmed with X-ray photoelectron spectroscopy and water contact angle. The amount of bovine serum albumin (BSA) and fibrinogen, and BSA thickness, were assessed to understand how adsorbed protein properties were influenced by physicochemistry and may influence HDs. OKs proliferation was measured, and HDs were quantified with immunofluorescence for collagen XVII and integrin β4. Plasma-cleaned surfaces were the most hydrophilic group overall, while CH3 was the most hydrophobic and OH was the most hydrophilic among functionalized groups. Modification with the OH chemical group showed the highest OKs proliferation and HD expression. The OKs response on OH surfaces appeared to not correlate to the amount or thickness of adsorbed model proteins. These results reveal relevant surface physicochemical features to favor HDs and improve implant soft tissue attachment.
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Affiliation(s)
- Michail Raptopoulos
- Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota, Minneapolis, Minnesota, USA
- Division of Periodontology, Department of Developmental and Surgical Sciences, University of Minnesota, Minneapolis, Minnesota, USA
| | - Nicholas G Fischer
- Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota, Minneapolis, Minnesota, USA
| | - Conrado Aparicio
- Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota, Minneapolis, Minnesota, USA
- Basic and Translational Research Division, Department of Odontology, UIC Barcelona - Universitat Internacional de Catalunya, Barcelona, Spain
- IBEC - Institute for BIoengineering of Catalonia, BIST-Barcelona Institute of Science and Technology, Barcelona, Spain
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Ajeti V, Lara-Santiago J, Alkmin S, Campagnola PJ. Ovarian and Breast Cancer Migration Dynamics on Laminin and Fibronectin Bidirectional Gradient Fibers Fabricated via Multiphoton Excited Photochemistry. Cell Mol Bioeng 2017; 10:295-311. [PMID: 29177019 DOI: 10.1007/s12195-017-0492-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Introduction Migration mis-regulation is a hallmark of cancer, and remains an important problem in cancer biology. We postulate the needs for better in vitro models to understand the details of cell-matrix interactions. Here, we utilized multiphoton excited (MPE) photochemistry to fabricate models to systematically study migration dynamics operative in breast and ovarian cancer. Gradients are a convenient means to modulate concentration and also have been implicated in metastases. Methods We specifically pattern sub-micron structured gradients from laminin and fibronectin whose up-regulation is associated with increased metastasis and poor prognosis. We developed a new continuous linear bi-directional gradient design, permitting exploration of the underlying cell-matrix interactions of migration, including speed, directness, and f-actin cytoskeleton alignment as a function of concentration. These new models provide both contact guidance and ECM binding cues, and provide a more relevant environment than possible with existing technologies such as flow chambers or 2D printed surfaces. Results We found an overall increase in these processes with increasing concentration on both laminin and fibronectin gradients for a series of ovarian and breast cancer lines. Moreover, directness was higher for more metastatic cells, indicating that epithelial or mesenchymal state of the cell type governs the dynamics. However, the specifics of the speed and directedness depend on both the cell type and protein, thus we found that we must consider these processes collectively to obtain a self-consistent picture of the migration. For this purpose, we performed a linear discriminate analysis (LDA) and successfully classified the different cell types on the two protein gradients without molecular biology analysis. Conclusions The bi-gradient structures are versatile tools to performing detailed studies of cell migration, specifically haptotxis. We further suggest the can be used in assessing efficacy of drug treatments targeted at specific matrix components.
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Affiliation(s)
- Visar Ajeti
- Department of Biomedical Engineering, University of Wisconsin-Madison, 1550 Engineering Drive, Madison, WI 53706
| | - Jorge Lara-Santiago
- Department of Biomedical Engineering, University of Wisconsin-Madison, 1550 Engineering Drive, Madison, WI 53706
| | - Samuel Alkmin
- Department of Biomedical Engineering, University of Wisconsin-Madison, 1550 Engineering Drive, Madison, WI 53706
| | - Paul J Campagnola
- Department of Biomedical Engineering, University of Wisconsin-Madison, 1550 Engineering Drive, Madison, WI 53706
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Sunami H, Shimizu Y, Denda J, Yokota I, Yoshizawa T, Uechi Y, Nakasone H, Igarashi Y, Kishimoto H, Matsushita M. Modulation of surface stiffness and cell patterning on polymer films using micropatterns. J Biomed Mater Res B Appl Biomater 2017; 106:976-985. [PMID: 28474403 DOI: 10.1002/jbm.b.33905] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 03/23/2017] [Accepted: 04/13/2017] [Indexed: 12/30/2022]
Abstract
Here, a new technology was developed to selectively produce areas of high and low surface Young's modulus on biomedical polymer films using micropatterns. First, an elastic polymer film was adhered to a striped micropattern to fabricate a micropattern-supported film. Next, the topography and Young's modulus of the film surface were mapped using atomic force microscopy. Contrasts between the concave and convex locations of the stripe pattern were obvious in the Young's modulus map, although the topographical map of the film surface appeared almost flat. The concave and convex locations of a polymer film supported by a different micropattern also contrasted clearly. The resulting Young's modulus map showed that the Young's modulus was higher at convex locations than at concave locations. Hence, regions of high and low stiffness can be locally generated based on the shape of the micropattern supporting the film. When cells were cultured on the micropattern-supported films, NIH3T3 fibroblasts preferentially accumulated in convex regions with high Young's moduli. These findings demonstrate that this new technology can regulate regions of high and low surface Young's modulus on a cellular scaffold with high planar resolution, as well as providing a method for directing cellular patterning. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 976-985, 2018.
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Affiliation(s)
- Hiroshi Sunami
- School of Medicine, University of Ryukyus, Nishihara, Japan
| | - Yusuke Shimizu
- School of Medicine, University of Ryukyus, Nishihara, Japan
| | - Junko Denda
- School of Medicine, University of Ryukyus, Nishihara, Japan
| | - Ikuko Yokota
- Frontier Research Center for Post-genome Science and Technology, Hokkaido University Faculty of Advanced Science, Sapporo, Japan
| | - Tomokazu Yoshizawa
- Creative Research Institution (CRIS), Hokkaido University, Sapporo, Japan
| | - Yukiko Uechi
- School of Medicine, University of Ryukyus, Nishihara, Japan
| | | | - Yasuyuki Igarashi
- Frontier Research Center for Post-genome Science and Technology, Hokkaido University Faculty of Advanced Science, Sapporo, Japan
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Rusu D, Calenic B, Greabu M, Kralev A, Boariu M, Bojin F, Anghel S, Paunescu V, Vela O, Calniceanu H, Stratul SI. Evaluation of oral keratinocyte progenitor and T-lymphocite cells response during early healing after augmentation of keratinized gingiva with a 3D collagen matrix - a pilot study. BMC Oral Health 2016; 17:9. [PMID: 27431208 PMCID: PMC4948093 DOI: 10.1186/s12903-016-0240-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 06/11/2016] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND The aim of the present study is to analyze the behavior of selected populations of oral keratinocytes and T-lymphocytes, responsible for re-constructing and maintaining the oral epithelial tissue architecture, following augmentation of the keratinized oral mucosa using a 3D-collagen matrix. METHODS Different groups of oral keratinocytes were isolated from biopsies harvested from 3 patients before the surgical procedure, as well as 7 and 14 days after the augmentation procedure. T-lymphocytes were isolated from peripheral blood at same timepoints. Keratinocytes were characterized for stem and differentiation markers, such as p63, cytokeratin 10 and 14, and in vitro parameters, such as cell viability, cell size and colony-forming efficiency. T-lymphocytes were analyzed for viability and the expression of various cluster of differentiation markers. The methods included magnetic separation of cell populations, immunofluorescence, flow cytometry, and histology of oral biopsies. RESULTS Both at 7 and 14 days, the majority of cells that repopulate the matrix were actively proliferating/progenitor oral keratinocytes with the phenotype integrin alfa6beta4 + CD71+. These cells display in vitro characteristics similar to the progenitor cells analyzed before the matrix placement. T-lymphocytes expressed CD8 and CD69 markers, while CD25 was absent. CONCLUSION The study shows that two weeks after the collagen membrane placement, the healing process appeared to be histologically complete, with no abnormal immune response induced by the matrix, however, with a higher than usual content of active proliferating cells, the majority of keratinocytes being characterized as transit amplifying cells.
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Affiliation(s)
- Darian Rusu
- />Department of Periodontology, Victor Babes University of Medicine and Pharmacy, Bv. Revolutiei 1989, Nr. 9, 300041 Timisoara, Romania
| | - Bogdan Calenic
- />Department of Biochemistry, Faculty of Dental Medicine, University of Medicine and Pharmacy, Carol Davila, Blvd-ul Eroii Sanitari, No 8, Bucharest, Romania
- />Victor Babes National Institute of Pathology, Biochemistry-Proteomics Department, Blv. Splaiul Independenţei nr. 99 - 101, Bucharest, Romania
| | - Maria Greabu
- />Department of Biochemistry, Faculty of Dental Medicine, University of Medicine and Pharmacy, Carol Davila, Blvd-ul Eroii Sanitari, No 8, Bucharest, Romania
| | - Alexander Kralev
- />Department of Periodontology, Victor Babes University of Medicine and Pharmacy, Bv. Revolutiei 1989, Nr. 9, 300041 Timisoara, Romania
| | - Marius Boariu
- />Department of Odontotherapy and Endodontics, Victor Babes University of Medicine and Pharmacy, Bv. Revolutiei 1989, 9, 300041 Timisoara, Romania
| | - Florina Bojin
- />Department of Functional Sciences-Immunology, Victor Babes University of Medicine and Pharmacy, Pta Eftimie Murgu nr.2, 300041 Timisoara, Romania
| | - Simona Anghel
- />Department of Functional Sciences-Immunology, Victor Babes University of Medicine and Pharmacy, Pta Eftimie Murgu nr.2, 300041 Timisoara, Romania
| | - Virgil Paunescu
- />Department of Functional Sciences-Immunology, Victor Babes University of Medicine and Pharmacy, Pta Eftimie Murgu nr.2, 300041 Timisoara, Romania
| | - Octavia Vela
- />Dental Clinic Dr.Stratul, Str.Emanoil Gojdu, nr.5, 300176 Timisoara, Romania
| | - Horia Calniceanu
- />Department of Dentistry, Faculty of Medicine and Pharmacy, University of Oradea, Pta 1 Decembrie nr.10, Oradea, Romania
| | - Stefan-Ioan Stratul
- />Department of Periodontology, Victor Babes University of Medicine and Pharmacy, Bv. Revolutiei 1989, Nr. 9, 300041 Timisoara, Romania
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Kushiro K, Lee CH, Takai M. Simultaneous characterization of protein–material and cell–protein interactions using dynamic QCM-D analysis on SAM surfaces. Biomater Sci 2016; 4:989-97. [DOI: 10.1039/c5bm00613a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
QCM-D signal patterns can serve as rules of thumb for biomaterial development by simultaneously characterizing different protein–material and cell–protein interactions.
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Affiliation(s)
- Keiichiro Kushiro
- Department of Bioengineering
- School of Engineering
- The University of Tokyo
- Tokyo 113-8656
- Japan
| | - Chih-Hao Lee
- Department of Bioengineering
- School of Engineering
- The University of Tokyo
- Tokyo 113-8656
- Japan
| | - Madoka Takai
- Department of Bioengineering
- School of Engineering
- The University of Tokyo
- Tokyo 113-8656
- Japan
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Tan KY, Lin H, Ramstedt M, Watt FM, Huck WTS, Gautrot JE. Decoupling geometrical and chemical cues directing epidermal stem cell fate on polymer brush-based cell micro-patterns. Integr Biol (Camb) 2014; 5:899-910. [PMID: 23572192 DOI: 10.1039/c3ib40026c] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The intricacy of the different parameters involved in cell adhesion to biomaterials and fate decision (e.g. proliferation, differentiation, apoptosis) makes the decoupling of the respective effects of surface properties, extra-cellular matrix protein adsorption and ultimately cell behaviour difficult. This work presents a micro-patterned polymer brush platform to control the adsorption of extra-cellular matrix (ECM) proteins to well defined micron-size areas and consequently control cell adhesion, spreading and shape independently of other chemical and physical surface properties. Protein patterns can be readily generated with brushes presenting a range of hydrophilicity and surface charge density. The surface properties of the selected brushes are fully characterised using a combination of FTIR, XPS, ellipsometry, atomic force microscopy, water contact goniometry, dynamic light scattering and ζ-potential measurements. Interactions of proteins relevant to cell patterning and culture with these brushes are studied by surface plasmon resonance, dynamic light scattering, ellipsometry and immuno-fluorescence microscopy. Finally this platform is used in an assay investigating the relative contributions of matrix geometry and surface chemistry on epidermal stem cell differentiation. It is found that moderate hydrophobicity does not impact stem cell commitment, whereas strongly negative surface potential increases the incidence of differentiation. This correlates with a marked decrease in the formation of focal adhesions (but not cell spreading).
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Affiliation(s)
- Khooi Y Tan
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Cambridge, UK
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Hristova K, Pecheva E, Pramatarova L, Altankov G. Improved interaction of osteoblast-like cells with apatite-nanodiamond coatings depends on fibronectin. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2011; 22:1891-1900. [PMID: 21706219 DOI: 10.1007/s10856-011-4357-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Accepted: 05/23/2011] [Indexed: 05/31/2023]
Abstract
New apatite (AP)/nanodiamond (ND) coating has been developed to improve physical and biological properties of stainless steel (SS) versus single AP coating. Homogeneously electrodeposited AP-ND layer demonstrates increased mechanical strength, interlayer cohesion and ductility. In the absence of serum, osteoblast-like MG63 cells attach well but poorly spread on both AP and AP-ND substrata. Pre-adsorption with serum or fibronectin (FN) improves the cellular interaction-an effect that is better pronounced on the AP-ND coating. In single protein adsorption study fluorescein isothiocyanate-labeled FN (FITC-FN) shows enhanced deposition on the AP-ND layer consistent with the significantly improved cell adhesion, spreading and focal adhesions formation (in comparison to SS and AP), particularly at low FN adsorption concentrations (1 μg/ml). Higher FN concentrations (20 μg/ml) abolish this difference suggesting that the promoted cellular interaction of serum (where FN is low) is caused by the greater affinity for FN. Moreover, it is found that MG63 cells tend to rearrange both adsorbed and secreted FN on the AP-ND layer suggesting facilitated FN matrix formation.
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Affiliation(s)
- K Hristova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia, Bulgaria
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8
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Labukas JP, Drake TJH, Ferguson GS. Compatibility of omega-functionality in the electrochemically directed self-assembly of monolayers on gold from alkyl thiosulfates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:9497-9505. [PMID: 20486674 DOI: 10.1021/la100048u] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Self-assembled monolayers were formed on gold electrochemically from omega-functionalized alkyl thiosulfates (Bunte salts). The resulting SAMs were characterized using X-ray photoelectron spectroscopy (XPS), contact-angle goniometry, and ellipsometry. A range of terminal functionality was examined, including CH(3), perfluoroalkyl, CO(2)H, CO(2)CH(3), CONH(2), CH(2)OH, and vinyl groups. Side-reactions involving some of these functional groups were consistent with intermediates proposed in our earlier publications and begin to define the scope of this method for building chemical structures at interfaces.
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Affiliation(s)
- Joseph P Labukas
- Department of Chemistry, Lehigh University, Bethlehem, Pennsylvania 18015-3172, USA
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9
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Bush KA, Pins GD. Carbodiimide conjugation of fibronectin on collagen basal lamina analogs enhances cellular binding domains and epithelialization. Tissue Eng Part A 2010; 16:829-38. [PMID: 19778179 DOI: 10.1089/ten.tea.2009.0514] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
To improve the regenerative potential of biomaterials used as bioengineered scaffolds, it is necessary to strategically incorporate biologically active molecules that promote in vivo cellular processes that lead to a fully functional tissue. This work evaluates the effects of strategically binding fibronectin (FN) to collagen basal lamina analogs to enhance keratinocyte functions necessary for complete skin regeneration. We found that FN that was passively adsorbed to collagen-glycosaminoglycan basal lamina analogs enhanced epithelial thickness and keratinocyte proliferation compared with nontreated basal lamina analogs at 3 days of air/liquid (A/L) interface culture. Additionally, we evaluated the availability of FN cellular binding site domains when FN was either passively adsorbed or [1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride] conjugated to basal lamina analogs fabricated from collagen-glycosaminoglycan coprecipitate or self-assembled type I collagen. It was found that 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride conjugation of FN significantly enhanced FN binding site presentation as well as epithelial thickness. Overall, the results gained from this study will be used to improve the regenerative capacity of basal lamina analogs for bioengineered skin substitutes as well as the development of bioengineered scaffolds for other tissue engineering applications.
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Affiliation(s)
- Katie A Bush
- Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, MA 01606, USA
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Driscoll PF, Milkani E, Lambert CR, McGimpsey WG. A multilayered approach to complex surface patterning. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:3731-3738. [PMID: 20175579 DOI: 10.1021/la902966b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A method for developing complex nanopatterns on surfaces has been developed by combining self-assembly, photolabile protecting groups, and multilayered films. An o-nitrobenzyl protecting group has been incorporated into molecular level films utilizing thiol-gold interactions. When the o-nitrobenzyl group is cleaved by ultraviolet light, a carboxylic acid terminated layer remains on the surface and is available for activation and further functionalization through amide bond formation. Using this method, multilayered films have been constructed and characterized by contact angle goniometry, cyclic voltammetry, grazing incidence infrared spectroscopy, and X-ray photoelectron spectroscopy measurements. Complex surface patterns can be achieved by creating a surface array using a photomask and then further functionalizing the irradiated area through covalent coupling. Fluorophores were attached to the deprotected regions, providing visual evidence of surface patterning using fluorescence microscopy. This approach is universal to bind moieties containing free amine groups at defined regions across a surface, allowing for the development of films with complex chemical and physicochemical properties.
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Affiliation(s)
- Peter F Driscoll
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, Massachusetts 01609, USA
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