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Özsoylu D, Aliazizi F, Wagner P, Schöning MJ. Template bacteria-free fabrication of surface imprinted polymer-based biosensor for E. coli detection using photolithographic mimics: Hacking bacterial adhesion. Biosens Bioelectron 2024; 261:116491. [PMID: 38879900 DOI: 10.1016/j.bios.2024.116491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 06/05/2024] [Accepted: 06/07/2024] [Indexed: 06/18/2024]
Abstract
As one class of molecular imprinted polymers (MIPs), surface imprinted polymer (SIP)-based biosensors show great potential in direct whole-bacteria detection. Micro-contact imprinting, that involves stamping the template bacteria immobilized on a substrate into a pre-polymerized polymer matrix, is the most straightforward and prominent method to obtain SIP-based biosensors. However, the major drawbacks of the method arise from the requirement for fresh template bacteria and often non-reproducible bacteria distribution on the stamp substrate. Herein, we developed a positive master stamp containing photolithographic mimics of the template bacteria (E. coli) enabling reproducible fabrication of biomimetic SIP-based biosensors without the need for the "real" bacteria cells. By using atomic force and scanning electron microscopy imaging techniques, respectively, the E. coli-capturing ability of the SIP samples was tested, and compared with non-imprinted polymer (NIP)-based samples and control SIP samples, in which the cavity geometry does not match with E. coli cells. It was revealed that the presence of the biomimetic E. coli imprints with a specifically designed geometry increases the sensor E. coli-capturing ability by an "imprinting factor" of about 3. These findings show the importance of geometry-guided physical recognition in bacterial detection using SIP-based biosensors. In addition, this imprinting strategy was employed to interdigitated electrodes and QCM (quartz crystal microbalance) chips. E. coli detection performance of the sensors was demonstrated with electrochemical impedance spectroscopy (EIS) and QCM measurements with dissipation monitoring technique (QCM-D).
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Affiliation(s)
- Dua Özsoylu
- Institute of Nano- and Biotechnologies (INB), Aachen University of Applied Sciences, Campus Jülich, 52428, Jülich, Germany
| | - Fereshteh Aliazizi
- Department of Physics and Astronomy, Laboratory for Soft Matter and Biophysics, KU Leuven, B-3001, Leuven, Belgium
| | - Patrick Wagner
- Department of Physics and Astronomy, Laboratory for Soft Matter and Biophysics, KU Leuven, B-3001, Leuven, Belgium
| | - Michael J Schöning
- Institute of Nano- and Biotechnologies (INB), Aachen University of Applied Sciences, Campus Jülich, 52428, Jülich, Germany; Institute of Biological Information Processing (IBI-3), Research Centre Jülich GmbH, 52425, Jülich, Germany.
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Kim HK, Park JH, Jang MJ, Han SJ, Cho YS, Park HH. Flexible and transparent nanohole-patterned films with antibacterial properties against Staphylococcus aureus. J Mater Chem B 2024. [PMID: 38953113 DOI: 10.1039/d4tb00434e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
In this paper, we explore the development of a multi-functional surface designed to tackle the challenges posed by Staphylococcus aureus (S. aureus), a common opportunistic pathogen. Infections caused by S. aureus during surgical procedures highlight the need for effective strategies to inhibit its adhesion, growth, and colonization, particularly on the surfaces of invasive medical devices. Until now, most existing research has focused on nanopillar structures (positive topographies). Uniform nanopillar arrays have been shown to control bacterial behavior based on the spacing between nanopillars. However, nanopillar structures are susceptible to external friction, impact, and force, making it challenging to maintain their antibacterial properties. Therefore, in this study, we investigate the antibacterial behavior of nanohole structures, which offer relatively superior mechanical robustness compared to nanopillars. Moreover, for applications in medical devices such as laparoscopes, there is a pressing need for surfaces that are not only transparent and flexible (or curved) but are also equipped with antibacterial properties. Our study introduces a scalable multi-functional surface that synergistically combines antibacterial and anti-fog properties. This is achieved by fabricating thin films with variously sized holes (ranging from 0.3 μm to 4 μm) using polyurethane acrylate (PUA). We assessed the activity of S. aureus on these surfaces and found that a 1 μm-diameter-hole pattern significantly reduced the presence of live S. aureus, without any detection of dead S. aureus. This bacteriostatic effect is attributed to the restricted proliferation due to the confined area provided by the hole pattern. However, the persistence of some live S. aureus on the surface necessitates further measures to minimize bacterial adhesion and enhance antibacterial effectiveness. To address this challenge, we coated the zwitterionic polymer 2-methacryloyloxyethyl phosphorylcholine (MPC) onto the nanohole pattern surface to reduce S. aureus adhesion. Moreover, in long-term experiments on surfaces, the MPC-coated effectively inhibited the colonization of S. aureus (18 h; 82%, 7 days; 83%, and 14 days; 68% antibacterial rate). By integrating PUA, MPC, and nanohole architectures into a single, flexible platform, we achieved a multi-functional surface catering to transparency, anti-fogging, and anti-biofouling requirements. This innovative approach marks a significant advancement in surface engineering, offering a versatile solution applicable in various fields, particularly in preventing S. aureus contamination in invasive medical devices like laparoscopes. The resultant surface, characterized by its transparency, flexibility, and antibacterial functionality, stands out as a promising candidate for mitigating S. aureus-related risks in medical applications.
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Affiliation(s)
- Hee-Kyeong Kim
- Department of Mechanical Engineering, College of Engineering, Wonkwang University, 460 Iksandae-ro, Iksan, Jeonbuk 54538, Republic of Korea
| | - Jeong-Hun Park
- Department of Mechanical Engineering, College of Engineering, Wonkwang University, 460 Iksandae-ro, Iksan, Jeonbuk 54538, Republic of Korea
| | - Min-Jun Jang
- Department of Mechanical Engineering, College of Engineering, Wonkwang University, 460 Iksandae-ro, Iksan, Jeonbuk 54538, Republic of Korea
| | - Su-Ji Han
- Department of Mechanical Engineering, College of Engineering, Wonkwang University, 460 Iksandae-ro, Iksan, Jeonbuk 54538, Republic of Korea
| | - Young-Sam Cho
- Division of Mechanical Engineering, College of Engineering, Wonkwang University, 460 Iksandae-ro, Iksan, Jeonbuk 54538, Republic of Korea.
- MECHABIO Group, Wonkwang University, 460 Ikandae-ro, Iksan, Jeonbuk 54538, Republic of Korea
| | - Hyun-Ha Park
- Division of Mechanical Engineering, College of Engineering, Wonkwang University, 460 Iksandae-ro, Iksan, Jeonbuk 54538, Republic of Korea.
- MECHABIO Group, Wonkwang University, 460 Ikandae-ro, Iksan, Jeonbuk 54538, Republic of Korea
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Rosales AB, Causserand C, Coetsier C, Formosa-Dague C. Probing the reduction of adhesion forces between biofilms and anti-biofouling filtration membrane surfaces using FluidFM technology. Colloids Surf B Biointerfaces 2024; 234:113701. [PMID: 38101142 DOI: 10.1016/j.colsurfb.2023.113701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/04/2023] [Accepted: 12/05/2023] [Indexed: 12/17/2023]
Abstract
Biofouling is a persistent problem in many sectors (healthcare, medicine, marine, and membrane filtration processes). To control the biofouling of surfaces, it is essential to overcome or reduce the adhesion forces between biofilms and surfaces. To access and understand the molecular basis of these interactions, atomic force microscopy (AFM) is a well-suited technology that can measure adhesion forces at the piconewton level. However, AFM-based existing methods only probe interactions between individual cells and surfaces, which is not representative of realistic conditions given that bacteria mainly exist in biofilms. We develop here an original method using FluidFM, a combination of AFM and microfluidics, to probe the adhesion forces between biofilms and filtration membranes modified with an anti-biofouling agent, vanillin. This strategy involves i) growing bacterial biofilms on micrometer-sized polystyrene beads, ii) aspirating these biofilm beads at the aperture of microfluidic cantilevers and iii) using them as probes in force spectroscopy experiments. The results obtained first showed that COOH-functionalized polystyrene beads are more suitable for bacterial growth, and that biofilms obtained after 3 h of incubation could be used with FluidFM. Then, biofilm-scale force spectroscopy experiments showed a significant decrease in adhesion forces, adhesion work, and adhesion events after membrane modification, demonstrating the potential of vanillin-coated membranes to reduce biofouling. In addition, the comparison between results at the individual cell and biofilm scales highlighted the complexity of polymeric matrix unbinding and/or unfolding in the biofilm, showing that individual cells behave differently from biofilms. Overall, this method could have implications in the fields of materials science, chemical engineering, health, and the environment.
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Affiliation(s)
- Abigail Burato Rosales
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, 31062 Toulouse, France
| | - Christel Causserand
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, 31062 Toulouse, France
| | - Clémence Coetsier
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, 31062 Toulouse, France; Fédération de Recherche Fermat, CNRS, 31000 Toulouse, France.
| | - Cécile Formosa-Dague
- TBI, Université de Toulouse, INSA, INRAE, CNRS, 31400 Toulouse, France; Fédération de Recherche Fermat, CNRS, 31000 Toulouse, France.
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Garcia-de-Albeniz N, Ginebra MP, Jimenez-Piqué E, Roa JJ, Mas-Moruno C. Influence of nanosecond laser surface patterning on dental 3Y-TZP: Effects on the topography, hydrothermal degradation and cell response. Dent Mater 2024; 40:139-150. [PMID: 37951750 DOI: 10.1016/j.dental.2023.10.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 10/11/2023] [Accepted: 10/25/2023] [Indexed: 11/14/2023]
Abstract
OBJECTIVES Laser surface micropatterning of dental-grade zirconia (3Y-TZP) was explored with the objective of providing defined linear patterns capable of guiding bone-cell response. METHODS A nanosecond (ns-) laser was employed to fabricate microgrooves on the surface of 3Y-TZP discs, yielding three different groove periodicities (i.e., 30, 50 and 100 µm). The resulting topography and surface damage were characterized by confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM). X-Ray diffraction (XRD) and Raman spectroscopy techniques were employed to assess the hydrothermal degradation resistance of the modified topographies. Preliminary biological studies were conducted to evaluate adhesion (6 h) of human mesenchymal stem cells (hMSC) to the patterns in terms of cell number and morphology. Finally, Staphylococcus aureus adhesion (4 h) to the microgrooves was investigated. RESULTS The surface analysis showed grooves of approximately 1.8 µm height that exhibited surface damage in the form of pile-up at the edge of the microgrooves, microcracks and cavities. Accelerated aging tests revealed a slight decrease of the hydrothermal degradation resistance after laser patterning, and the Raman mapping showed the presence of monoclinic phase heterogeneously distributed along the patterned surfaces. An increase of the hMSC area was identified on all the microgrooved surfaces, although only the 50 µm periodicity, which is closer to the cell size, significantly favored cell elongation and alignment along the grooves. A decrease in Staphylococcus aureus adhesion was observed on the investigated micropatterns. SIGNIFICANCE The study suggests that linear microgrooves of 50 µm periodicity may help in promoting hMSC adhesion and alignment, while reducing bacterial cell attachment.
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Affiliation(s)
- N Garcia-de-Albeniz
- Center for Structural Integrity, Reliability and Micromechanics of Materials (CIEFMA), Department of Materials Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain; Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Engineering, Universitat Politècnica de Catalunya, BarcelonaTECH, 08019 Barcelona, Spain
| | - M-P Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Engineering, Universitat Politècnica de Catalunya, BarcelonaTECH, 08019 Barcelona, Spain; Barcelona Research Center in ssMultiscale Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain; Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute of Science and Technology, 08028 Barcelona, Spain
| | - E Jimenez-Piqué
- Center for Structural Integrity, Reliability and Micromechanics of Materials (CIEFMA), Department of Materials Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain; Barcelona Research Center in ssMultiscale Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain
| | - J J Roa
- Center for Structural Integrity, Reliability and Micromechanics of Materials (CIEFMA), Department of Materials Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain; Barcelona Research Center in ssMultiscale Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain.
| | - C Mas-Moruno
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Engineering, Universitat Politècnica de Catalunya, BarcelonaTECH, 08019 Barcelona, Spain; Barcelona Research Center in ssMultiscale Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain.
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Papa S, Maalouf M, Claudel P, Sedao X, Di Maio Y, Hamzeh-Cognasse H, Thomas M, Guignandon A, Dumas V. Key topographic parameters driving surface adhesion of Porphyromonas gingivalis. Sci Rep 2023; 13:15893. [PMID: 37741851 PMCID: PMC10518006 DOI: 10.1038/s41598-023-42387-5] [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: 05/17/2023] [Accepted: 09/09/2023] [Indexed: 09/25/2023] Open
Abstract
Dental implant failure is primarily due to peri-implantitis, a consequence of bacterial biofilm formation. Bacterial adhesion is strongly linked to micro-/nano-topographies of a surface; thus an assessment of surface texture parameters is essential to understand bacterial adhesion. In this study, mirror polished titanium samples (Ti6Al4V) were irradiated with a femtosecond laser (fs-L) at a wavelength of 1030 nm (infrared) with variable laser parameters (laser beam polarization, number, spacing and organization of the impacts). Images of 3-D topographies were obtained by focal variation microscopy and analyzed with MountainsMap software to measure surface parameters. From bacteria associated with peri-implantitis, we selected Porphyromonas gingivalis to evaluate its adhesion on Ti6Al4V surfaces in an in vitro study. Correlations between various surface parameters and P. gingivalis adhesion were investigated. We discovered that Sa value, a common measure of surface roughness, was not sufficient in describing the complexity of these fs-L treated surfaces and their bacterial interaction. We found that Sku, density and mean depths of the furrows, were the most accurate parameters for this purpose. These results provide important information that could help anticipate the bacterial adhesive properties of a surface based on its topographic parameters, thus the development of promising laser designed biofunctional implants.
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Affiliation(s)
- Steve Papa
- INSERM, SAINBIOSE U1059, Mines Saint-Etienne, Université Jean Monnet Saint-Étienne, 42023, Saint-Étienne, France.
| | - Mathieu Maalouf
- INSERM, SAINBIOSE U1059, Mines Saint-Etienne, Université Jean Monnet Saint-Étienne, 42023, Saint-Étienne, France
| | - Pierre Claudel
- GIE Manutech-USD, 20 Rue Benoît Lauras, 42000, Saint-Étienne, France
| | - Xxx Sedao
- GIE Manutech-USD, 20 Rue Benoît Lauras, 42000, Saint-Étienne, France
- Laboratory Hubert Curien, UMR 5516 CNRS, Jean Monnet University, University of Lyon, 42000, Saint-Étienne, France
| | - Yoan Di Maio
- GIE Manutech-USD, 20 Rue Benoît Lauras, 42000, Saint-Étienne, France
| | - Hind Hamzeh-Cognasse
- INSERM, SAINBIOSE U1059, Mines Saint-Etienne, Université Jean Monnet Saint-Étienne, 42023, Saint-Étienne, France
| | - Mireille Thomas
- INSERM, SAINBIOSE U1059, Mines Saint-Etienne, Université Jean Monnet Saint-Étienne, 42023, Saint-Étienne, France
| | - Alain Guignandon
- INSERM, SAINBIOSE U1059, Mines Saint-Etienne, Université Jean Monnet Saint-Étienne, 42023, Saint-Étienne, France
| | - Virginie Dumas
- Ecole Centrale de Lyon, CNRS, ENTPE, LTDS, UMR5513, ENISE, Univ Lyon, 42023, Saint-Étienne, France
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Cagnola GN, Cabrera JN, Negri RM, D'Accorso NB, Lizarraga L, Pettinari MJ. Biofilm Formation of Two Different Marine Bacteria on Modified PDMS Surfaces is Affected by Surface Roughness and Topography. Curr Microbiol 2023; 80:256. [PMID: 37357232 DOI: 10.1007/s00284-023-03370-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 06/08/2023] [Indexed: 06/27/2023]
Abstract
Different strategies were tested to reduce biofilm formation of the model marine bacteria Cobetia marina and Marinobacter hydrocarbonoclasticus on cross-linked polydimethylsiloxane (PDMS) coated aluminum and cellulose acetate surfaces modified by addition of multi-walled carbon nanotubes (MWCNT) or exposure of the surfaces to bromine vapors in the presence and absence of UV irradiation. The three surface modifications explored led to important reductions in biofilm formation for the two marine bacteria, up to 30% in the case of exposure to Br2(g). Biofouling reduction could be correlated to surface properties in all cases through the introduction of a quantitative theoretical model based on an effective roughness parameter, Raeff, that accounted for the different morphological changes observed. The model considers the possibility of bacterial inclusion into large surface wells, as observed by AFM in the case of Br2(g) + UV light treatment. In addition, a linear relationship was observed between biofouling reduction and the Raeff effective roughness parameter.
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Affiliation(s)
- Gonzalo N Cagnola
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales (FCEN), Universidad de Buenos Aires (UBA), Buenos Aires, Argentina
- Instituto de Química Biológica de la FCEN (IQUIBICEN)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), FCEN, UBA, Buenos Aires, Argentina
| | - J Nicolas Cabrera
- Departamento de Química Inorgánica, Analítica y Química Física, FCEN, UBA, Buenos Aires, Argentina
- Instituto de Química Física de los Materiales, Medio Ambiente y Energía (INQUIMAE), CONICET-UBA, Buenos Aires, Argentina
| | - R Martin Negri
- Departamento de Química Inorgánica, Analítica y Química Física, FCEN, UBA, Buenos Aires, Argentina
- Instituto de Química Física de los Materiales, Medio Ambiente y Energía (INQUIMAE), CONICET-UBA, Buenos Aires, Argentina
| | - Norma B D'Accorso
- Departamento de Química Orgánica, FCEN, UBA, Buenos Aires, Argentina
- Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), CONICET-UBA, Buenos Aires, Argentina
| | - Leonardo Lizarraga
- Centro de Investigaciones en Bionanociencias (CIBION-CONICET), Buenos Aires, Argentina
| | - M Julia Pettinari
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales (FCEN), Universidad de Buenos Aires (UBA), Buenos Aires, Argentina.
- Instituto de Química Biológica de la FCEN (IQUIBICEN)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), FCEN, UBA, Buenos Aires, Argentina.
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Vieira A, Rodríguez-Lorenzo L, Leonor IB, Reis RL, Espiña B, Dos Santos MB. Innovative Antibacterial, Photocatalytic, Titanium Dioxide Microstructured Surfaces Based on Bacterial Adhesion Enhancement. ACS APPLIED BIO MATERIALS 2023; 6:754-764. [PMID: 36696391 DOI: 10.1021/acsabm.2c00956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Bacterial colonization and biofilm formation are found on nearly all wet surfaces, representing a serious problem for both human healthcare and industrial applications, where traditional treatments may not be effective. Herein, we describe a synergistic approach for improving the performance of antibacterial surfaces based on microstructured surfaces that embed titanium dioxide nanoparticles (TiO2 NPs). The surfaces were designed to enhance bacteria entrapment, facilitating their subsequent eradication by a combination of UVC disinfection and TiO2 NPs photocatalysis. The efficacy of the engineered TiO2-modified microtopographic surfaces was evaluated using three different designs, and it was found that S2-lozenge and S3-square patterns had a higher concentration of trapped bacteria, with increases of 70 and 76%, respectively, compared to flat surfaces. Importantly, these surfaces showed a significant reduction (99%) of viable bacteria after just 30 min of irradiation with UVC 254 nm light at low intensity, being sixfold more effective than flat surfaces. Overall, our results showed that the synergistic effect of combining microstructured capturing surfaces with the chemical functionality of TiO2 NPs paves the way for developing innovative and efficient antibacterial surfaces with numerous potential applications in the healthcare and biotechnology market.
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Affiliation(s)
- Ana Vieira
- INL─International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, Braga4715-330, Portugal
| | - Laura Rodríguez-Lorenzo
- INL─International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, Braga4715-330, Portugal
| | - Isabel B Leonor
- 3B's Research Institute on Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, Guimarães4805-017, Barco, Portugal.,ICVS/3B's─PT Government Associate Laboratory, Braga/Guimarães4805-017, Portugal
| | - Rui L Reis
- 3B's Research Institute on Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, Guimarães4805-017, Barco, Portugal.,ICVS/3B's─PT Government Associate Laboratory, Braga/Guimarães4805-017, Portugal
| | - Begoña Espiña
- INL─International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, Braga4715-330, Portugal
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Marcelo GA, Galhano J, Duarte MP, Kurutos A, Capelo-Martínez JL, Lodeiro C, Oliveira E. Functional Cyanine-Based PVA:PVP Polymers as Antimicrobial Tools toward Food and Health-Care Bacterial Infections. Macromol Biosci 2022; 22:e2200244. [PMID: 36004698 DOI: 10.1002/mabi.202200244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/22/2022] [Indexed: 01/15/2023]
Abstract
The rising of multidrug-resistant bacteria and their associated proliferation as harmful microorganisms boosts the creation of new antibacterial surfaces and biomaterials with applications ranging from health to food packing. Herein, low-cost antibacterial PVA:PVP copolymers containing cyanine derivatives (1, 2, and 3) and their respective Cu2+ complexes are successfully obtained and tested against Gram-negative and Gram-positive bacteria. The possible application in food packing is addressed by covering the surface of typical paper mockups with the doped polymers. All dye-doped polymers present a broad-spectrum antibacterial effect against Gram-positive bacteria, especially for Bacillus cereus (B. cereus), Staphylococcus aureus (S. aureus), and methicillin-resistant S. aureus (MRSA) strains, with PVA:PVP@3 and PVA:PVP@3-Cu being the most effective. Moreover, polymers containing cyanine derivatives present interesting inhibition effects against Pseudomonas aeruginosa (P. aeruginosa), where the production of its characteristic blue/green virulent pigment is not observed. Of the coated paper mockups, PVA:PVP:paper@2 and PVA:PVP:paper@2-Cu are most effective against B. cereus and S. aureus, while PVA:PVP:paper@3 and PVA:PVP:paper@3-Cu are most effective against the MRSA strain. In these formulations, direct contact inhibition mechanisms appear to be more significant than diffusional mechanisms, due to cyanine release hindrance, making them very interesting and versatile platforms for medical and food applications.
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Affiliation(s)
- Gonçalo A Marcelo
- BIOSCOPE Research Group, LAQV-REQUIMTE, Chemistry Department, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, Caparica, 2829-516, Portugal
| | - Joana Galhano
- BIOSCOPE Research Group, LAQV-REQUIMTE, Chemistry Department, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, Caparica, 2829-516, Portugal
| | - Maria Paula Duarte
- Chemistry Department, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, 2829-516, Portugal
| | - Atanas Kurutos
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev str., bl. 9, Sofia, 1113, Bulgaria
| | - Jose Luis Capelo-Martínez
- BIOSCOPE Research Group, LAQV-REQUIMTE, Chemistry Department, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, Caparica, 2829-516, Portugal.,PROTEOMASS Scientific Society. Rua dos Inventores. Madam Parque, Caparica Campus, Caparica, 2829-516, Portugal
| | - Carlos Lodeiro
- BIOSCOPE Research Group, LAQV-REQUIMTE, Chemistry Department, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, Caparica, 2829-516, Portugal.,PROTEOMASS Scientific Society. Rua dos Inventores. Madam Parque, Caparica Campus, Caparica, 2829-516, Portugal
| | - Elisabete Oliveira
- BIOSCOPE Research Group, LAQV-REQUIMTE, Chemistry Department, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, Caparica, 2829-516, Portugal.,PROTEOMASS Scientific Society. Rua dos Inventores. Madam Parque, Caparica Campus, Caparica, 2829-516, Portugal
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Motility Suppression and Trapping Bacteria by ZnO Nanostructures. CRYSTALS 2022. [DOI: 10.3390/cryst12081027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Regulating the swimming motility of bacteria near surfaces is essential to suppress or avoid bacterial contamination and infection in catheters and medical devices with wall surfaces. However, the motility of bacteria near walls strongly depends on the combination of the local physicochemical properties of the surfaces. To unravel how nanostructures and their local chemical microenvironment dynamically affect the bacterial motility near surfaces, here, we directly visualize the bacterial swimming and systematically analyze the motility of Escherichia coli swimming on ZnO nanoparticle films and nanowire arrays with further ultraviolet irradiation. The results show that the ZnO nanowire arrays reduce the swimming motility, thus significantly enhancing the trapping ability for motile bacteria. Additionally, thanks to the wide bandgap nature of a ZnO semiconductor, the ultraviolet irradiation rapidly reduces the bacteria locomotion due to the hydroxyl and singlet oxygen produced by the photodynamic effects of ZnO nanowire arrays in an aqueous solution. The findings quantitatively reveal how the combination of geometrical nanostructured surfaces and local tuning of the steric microenvironment are able to regulate the motility of swimming bacteria and suggest the efficient inhibition of bacterial translocation and infection by nanostructured coatings.
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Pellegrino L, Kriem LS, Robles ESJ, Cabral JT. Microbial Response to Micrometer-Scale Multiaxial Wrinkled Surfaces. ACS APPLIED MATERIALS & INTERFACES 2022; 14:31463-31473. [PMID: 35699282 PMCID: PMC9284519 DOI: 10.1021/acsami.2c08768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We investigate the effect of micrometer-scale surface wrinkling on the attachment and proliferation of model bacteria (Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli K12) and fungi (Candida albicans). Specifically, sinusoidal (1D), checkerboard (C), and herringbone (H) patterns were fabricated by mechanical wrinkling of plasma-oxidized polydimethylsiloxane (PDMS) bilayers and contrasted with flat (F) surfaces. Microbial deformation and orientation were found to correlate with the aspect ratio and commensurably with surface pattern dimensions and local pattern order. Significantly, the proliferation of P. aeruginosa could be described by a linear scaling between bacterial area coverage and available surface area, defined as a fraction of the line integral along each profile with negative curvature. However, in the early stages of proliferation (up to 6 h examined), that C and H patterns disrupt the spatial arrangement of bacteria, impeding proliferation for several hours and reducing it (by ∼50%) thereafter. Our findings suggest a simple framework to rationalize the impact of micrometer-scale topography on microbial action and demonstrate that multiaxial patterning order provides an effective strategy to delay and frustrate the early stages of bacterial proliferation.
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Affiliation(s)
- Luca Pellegrino
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, United Kingdom
| | - Lukas Simon Kriem
- Fraunhofer
Institute for Interfacial Engineering and Biotechnology IGB, Nobelstrasse 12, 70569 Stuttgart, Germany
| | - Eric S. J. Robles
- Procter
& Gamble, Newcastle Innovation Centre, Newcastle upon Tyne NE12
9TS, United Kingdom
| | - João T. Cabral
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, United Kingdom
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11
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Shi Y, Chen T, Shaw P, Wang PY. Manipulating Bacterial Biofilms Using Materiobiology and Synthetic Biology Approaches. Front Microbiol 2022; 13:844997. [PMID: 35875573 PMCID: PMC9301480 DOI: 10.3389/fmicb.2022.844997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 06/13/2022] [Indexed: 11/25/2022] Open
Abstract
Bacteria form biofilms on material surfaces within hours. Biofilms are often considered problematic substances in the fields such as biomedical devices and the food industry; however, they are beneficial in other fields such as fermentation, water remediation, and civil engineering. Biofilm properties depend on their genome and the extracellular environment, including pH, shear stress, and matrices topography, stiffness, wettability, and charges during biofilm formation. These surface properties have feedback effects on biofilm formation at different stages. Due to emerging technology such as synthetic biology and genome editing, many studies have focused on functionalizing biofilm for specific applications. Nevertheless, few studies combine these two approaches to produce or modify biofilms. This review summarizes up-to-date materials science and synthetic biology approaches to controlling biofilms. The review proposed a potential research direction in the future that can gain better control of bacteria and biofilms.
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Affiliation(s)
- Yue Shi
- Oujiang Laboratory, Key Laboratory of Alzheimer’s Disease of Zhejiang Province, Institute of Aging, Wenzhou Medical University, Wenzhou, China
- Shenzhen Key Laboratory of Biomimetic Materials and Cellular Immunomodulation, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Tingli Chen
- Shenzhen Key Laboratory of Biomimetic Materials and Cellular Immunomodulation, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Peter Shaw
- Oujiang Laboratory, Key Laboratory of Alzheimer’s Disease of Zhejiang Province, Institute of Aging, Wenzhou Medical University, Wenzhou, China
| | - Peng-Yuan Wang
- Oujiang Laboratory, Key Laboratory of Alzheimer’s Disease of Zhejiang Province, Institute of Aging, Wenzhou Medical University, Wenzhou, China
- Shenzhen Key Laboratory of Biomimetic Materials and Cellular Immunomodulation, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
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12
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Aceti DM, Filipov E, Angelova L, Sotelo L, Fontanot T, Yousefi P, Christiansen S, Leuchs G, Stanimirov S, Trifonov A, Buchvarov I, Daskalova A. Single-Step Process for Titanium Surface Micro- and Nano-Structuring and In Situ Silver Nanoparticles Formation by Ultra-Short Laser Patterning. MATERIALS 2022; 15:ma15134670. [PMID: 35806794 PMCID: PMC9267125 DOI: 10.3390/ma15134670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 02/05/2023]
Abstract
Ultra-short laser (USL)-induced surface structuring combined with nanoparticles synthesis by multiphoton photoreduction represents a novel single-step approach for commercially pure titanium (cp-Ti) surface enhancement. Such a combination leads to the formation of distinct topographical features covered by nanoparticles. The USL processing of cp-Ti in an aqueous solution of silver nitrate (AgNO3) induces the formation of micron-sized spikes surmounted by silver nanoparticles (AgNPs). The proposed approach combines the structuring and oxidation of the Ti surface and the synthesis of AgNPs in a one-step process, without the use of additional chemicals or a complex apparatus. Such a process is easy to implement, versatile and sustainable compared to alternative methodologies capable of obtaining comparable results. Antimicrobial surfaces on medical devices (e.g., surgical tools or implants), for which titanium is widely used, can be realized due to the simultaneous presence of AgNPs and micro/nano-structured surface topography. The processed surfaces were examined by means of a scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDX), atomic force microscopy (AFM) and Raman spectroscopy. The surface morphology and the oxidation, quality and quantity of AgNPs were analyzed in relation to process parameters (laser scanning speed and AgNO3 concentration), as well as the effect of AgNPs on the Raman signal of Titanium oxide.
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Affiliation(s)
- Dante Maria Aceti
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
| | - Emil Filipov
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
| | - Liliya Angelova
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
| | - Lamborghini Sotelo
- Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstraße 7, 91058 Erlangen, Germany
- Innovations-Institut für Nanotechnologie und Korrelative Mikroskopie gGmbH Äußere Nürnberger Str. 62, 91301 Forchheim, Germany
| | - Tommaso Fontanot
- Fraunhofer Institute for Ceramic Technologies and Systems IKTS Äußere Nürnberger Str. 62, 91301 Forchheim, Germany
| | - Peyman Yousefi
- Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstraße 7, 91058 Erlangen, Germany
- Fraunhofer Institute for Ceramic Technologies and Systems IKTS Äußere Nürnberger Str. 62, 91301 Forchheim, Germany
| | - Silke Christiansen
- Innovations-Institut für Nanotechnologie und Korrelative Mikroskopie gGmbH Äußere Nürnberger Str. 62, 91301 Forchheim, Germany
- Fraunhofer Institute for Ceramic Technologies and Systems IKTS Äußere Nürnberger Str. 62, 91301 Forchheim, Germany
| | - Gerd Leuchs
- Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstraße 7, 91058 Erlangen, Germany
- Max-Planck-Institut für die Physik des Lichts, 91058 Erlangen, Germany
| | - Stanislav Stanimirov
- Faculty of Chemistry and Pharmacy, Sofia University, 1 J. Bourchier Blvd., 1164 Sofia, Bulgaria
| | - Anton Trifonov
- Department of Physics, Sofia University, 5 J. Bourchier Blvd., 1164 Sofia, Bulgaria
| | - Ivan Buchvarov
- Department of Physics, Sofia University, 5 J. Bourchier Blvd., 1164 Sofia, Bulgaria
| | - Albena Daskalova
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
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13
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Schulze M, Fobker M, Puetzler J, Hillebrand J, Niemann S, Schulte E, Kurzynski J, Gosheger G, Hasselmann J. Mechanical and microbiological testing concept for activatable anti-infective biopolymer implant coatings. BIOMATERIALS ADVANCES 2022; 138:212917. [PMID: 35913227 DOI: 10.1016/j.bioadv.2022.212917] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 04/29/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
An anti-infective bilayer implant coating with selectively activatable properties was developed to prevent biofilm formation and to support the treatment of periprosthetic infection as a local adjunct to current treatment concepts. In a first step, Ti6Al4V discs were coated with a permanent layer of Poly(l-lactide) (PLLA) including silver ions. The PLLA could be optionally released by the application of extracorporeal shock waves. In a second step, a resorbable layer of triglyceride (TAG) with incorporated antibiotics was applied. The second layer is designed for resorption within weeks. Prior to approval and clinical application, a comprehensive evaluation process to determine mechanical/physical and microbiological properties is obligate. To date, none of the existing test standards covers both drug-releasing and activatable coatings for orthopedic implants. Therefore, a comprehensive test concept was developed to characterize the new coating in a pilot series. The coatings were homogeneously applied on the Ti6Al4V substrate, resulting in an adhesion strength sufficient for non-articulating surfaces for PLLA. Proof of the extracorporeal shockwave activation of PLLA was demonstrated both mechanically and microbiologically, with a simultaneous increase of biocompatibility compared to standard electroplated silver coating. Wettability was significantly reduced for both layers in comparison to the Ti6Al4V substrate. Thus, potentially inhibiting biofilm formation. Furthermore, the TAG coating promoted cell proliferation and bacterial eradication. In conclusion, the testing concept is applicable for similar biopolymer coating systems. Furthermore, the extracorporeal activation could represent a completely new supportive approach for the treatment of periprosthetic joint infections.
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Affiliation(s)
- Martin Schulze
- Clinic for General Orthopedics and Tumororthopedics, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany.
| | - Manfred Fobker
- Central Laboratory, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany
| | - Jan Puetzler
- Clinic for General Orthopedics and Tumororthopedics, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany
| | - Jule Hillebrand
- Clinic for General Orthopedics and Tumororthopedics, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany
| | - Silke Niemann
- Institute of Medical Microbiology, University Hospital Muenster, Domagkstraße 10, 48149 Muenster, Germany
| | - Erhard Schulte
- Central Laboratory, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany
| | - Jochen Kurzynski
- Materials Engineering Laboratory, Department of Mechanical Engineering, University of Applied Sciences Muenster, Stegerwaldstraße 39, 48565 Steinfurt, Germany
| | - Georg Gosheger
- Clinic for General Orthopedics and Tumororthopedics, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany
| | - Julian Hasselmann
- Clinic for General Orthopedics and Tumororthopedics, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149 Muenster, Germany; Materials Engineering Laboratory, Department of Mechanical Engineering, University of Applied Sciences Muenster, Stegerwaldstraße 39, 48565 Steinfurt, Germany
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14
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Xu LC, Siedlecki CA. Submicron topography design for controlling staphylococcal bacterial adhesion and biofilm formation. J Biomed Mater Res A 2022; 110:1238-1250. [PMID: 35128791 PMCID: PMC9885517 DOI: 10.1002/jbm.a.37369] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 01/20/2022] [Accepted: 01/24/2022] [Indexed: 02/01/2023]
Abstract
Surface topography modification with nano- or micro-textured structures has been an efficient approach to inhibit microbial adhesion and biofilm formation and thereby to prevent biomaterial-associated infection without modification of surface chemistry/bulk properties of materials and without causing antibiotic resistance. This manuscript focuses on submicron-textured patterns with ordered arrays of pillars on polyurethane (PU) biomaterial surfaces in an effort to understand the effects of surface pillar features and surface properties on adhesion and colonization responses of two staphylococcal strains. Five submicron patterns with a variety of pillar dimensions were designed and fabricated on PU film surfaces and bacterial adhesion and biofilm formation of Staphylococcal strains (Staphylococcus epidermidis RP62A and Staphylococcus aureus Newman D2C) were characterized. Results show that all submicron textured surface significantly reduced bacterial adhesion and inhibited biofilm formation, and bacterial adhesion linearly decreased with the reduction in top surface area fraction. Surface wettability did not show a linear correlation with bacterial adhesion, suggesting that surface contact area dominates bacterial adhesion. From this, it appears that the design of textured patterns should minimize surface area fraction to reduce the bacterial interaction with surfaces but in a way that ensures the mechanical strength of pillars in order to avoid collapse. These findings may provide a rationale for design of polymer surfaces for antifouling medical devices.
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Affiliation(s)
- Li-Chong Xu
- Department of Surgery, The Pennsylvania State University, College of Medicine, Hershey, PA 17033
| | - Christopher A. Siedlecki
- Department of Surgery, The Pennsylvania State University, College of Medicine, Hershey, PA 17033,Department of Biomedical Engineering,The Pennsylvania State University, College of Medicine, Hershey, PA 17033,Correspondence: Dr. Christopher A. Siedlecki, The Pennsylvania State University, Milton S. Hershey Medical Center, College of Medicine, H151, 500 University Dr., Hershey, PA 17033. Phone: (717) 531-5716. Fax: (717) 531-4464.
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15
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Kallas P, Valen H, Hulander M, Gadegaard N, Stormonth-Darling J, O'Reilly P, Thiede B, Andersson M, Haugen HJ. Protein-coated nanostructured surfaces affect the adhesion of Escherichia coli. NANOSCALE 2022; 14:7736-7746. [PMID: 35579413 PMCID: PMC9135173 DOI: 10.1039/d2nr00976e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 04/20/2022] [Indexed: 06/15/2023]
Abstract
Developing new implant surfaces with anti-adhesion bacterial properties used for medical devices remains a challenge. Here we describe a novel study investigating nanotopography influences on bacterial adhesion on surfaces with controlled interspatial nanopillar distances. The surfaces were coated with proteins (fibrinogen, collagen, serum and saliva) prior to E. coli-WT adhesion under flow conditions. PiFM provided chemical mapping and showed that proteins adsorbed both between and onto the nanopillars with a preference for areas between the nanopillars. E. coli-WT adhered least to protein-coated areas with low surface nanopillar coverage, most to surfaces coated with saliva, while human serum led to the lowest adhesion. Protein-coated nanostructured surfaces affected the adhesion of E. coli-WT.
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Affiliation(s)
- Pawel Kallas
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0455 Oslo, Norway.
| | - Håkon Valen
- Nordic Institute of Dental Materials, 0855 Oslo, Norway
| | - Mats Hulander
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 58 Göteborg, Sweden
| | - Nikolaj Gadegaard
- James Watt School of Engineering, University of Glasgow, G12 8QQ Glasgow, UK
| | | | | | - Bernd Thiede
- Department of Biosciences, The Faculty of Mathematics and Natural Sciences, University of Oslo, 0371 Oslo, Norway
| | - Martin Andersson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 58 Göteborg, Sweden
| | - Håvard Jostein Haugen
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0455 Oslo, Norway.
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16
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Evans A, Slate AJ, Tobin M, Lynch S, Wilson Nieuwenhuis J, Verran J, Kelly P, Whitehead KA. Multifractal Analysis to Determine the Effect of Surface Topography on the Distribution, Density, Dispersion and Clustering of Differently Organised Coccal-Shaped Bacteria. Antibiotics (Basel) 2022; 11:551. [PMID: 35625195 PMCID: PMC9137600 DOI: 10.3390/antibiotics11050551] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/11/2022] [Accepted: 04/13/2022] [Indexed: 12/10/2022] Open
Abstract
The topographic features of surfaces are known to affect bacterial retention on a surface, but the precise mechanisms of this phenomenon are little understood. Four coccal-shaped bacteria, Staphylococcus sciuri, Streptococcus pyogenes, Micrococcus luteus, and Staphylococcus aureus, that organise in different cellular groupings (grape-like clusters, tetrad-arranging clusters, short chains, and diploid arrangement, respectively) were used. These differently grouped cells were used to determine how surface topography affected their distribution, density, dispersion, and clustering when retained on titanium surfaces with defined topographies. Titanium-coated surfaces that were smooth and had grooved features of 1.02 µm-wide, 0.21 µm-deep grooves, and 0.59 µm-wide, 0.17 µm-deep grooves were used. The average contact angle of the surfaces was 91°. All bacterial species were overall of a hydrophobic nature, although M. luteus was the least hydrophobic. It was demonstrated that the 1.02 µm-wide featured surface most affected Strep. pyogenes and S. sciuri, and hence the surfaces with the larger surface features most affected the cells with smaller dimensions. The 0.59 µm featured surface only affected the density of the bacteria, and it may be suggested that the surfaces with the smaller features reduced bacterial retention. These results demonstrate that the size of the topographical surface features affect the distribution, density, dispersion, and clustering of bacteria across surfaces, and this is related to the cellular organisation of the bacterial species. The results from this work inform how surface topographical and bacterial properties affect the distribution, density, dispersion, and clustering of bacterial retention.
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Affiliation(s)
- Adele Evans
- Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK; (A.E.); (J.V.); (P.K.)
| | - Anthony J. Slate
- Department of Biology and Biochemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK;
| | - Millie Tobin
- Department of Computing and Mathematics, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK; (M.T.); (S.L.)
| | - Stephen Lynch
- Department of Computing and Mathematics, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK; (M.T.); (S.L.)
| | - Joels Wilson Nieuwenhuis
- Microbiology at Interfaces, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK;
| | - Joanna Verran
- Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK; (A.E.); (J.V.); (P.K.)
| | - Peter Kelly
- Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK; (A.E.); (J.V.); (P.K.)
| | - Kathryn A. Whitehead
- Microbiology at Interfaces, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK;
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17
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Combining microscopy assays of bacteria-surface interactions to better evaluate antimicrobial polymer coatings. Appl Environ Microbiol 2022; 88:e0224121. [PMID: 35108075 DOI: 10.1128/aem.02241-21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Validation of the antimicrobial performance of contact-killing polymer surfaces through experimental determination of bacterial adhesion or viability is essential for their targeted development and application. However, there is not yet a consensus on a single most appropriate evaluation method or procedure. Combining and benchmarking previously reported assays could reduce the significant variation and misinterpretation of efficacy data obtained from different methods. In this work, we systematically investigated the response of bacteria cells to anti-adhesive and antiseptic polymer coatings by combining (i) bulk solution-based, (ii) thin-film spacer-based and (iii) direct contact assays. In addition, we evaluated the studied assays using a five-point scoring framework that highlights key areas for improvement. Our data suggest that combined microscopy assays provide a more comprehensive representation of antimicrobial performance, thereby helping to identify effective types of antibacterial polymer coatings. Importance We present and evaluate a combination of methods for validating the efficacy of antimicrobial surfaces. Antimicrobial surfaces/coatings based on contact-killing components can be instrumental to functionalise a wide range of products. However, there is not yet a consensus on a single, most appropriate method to evaluate their performance. By combining three microscopy methods, we were able to discern contact killing effects at the single cell level that were not detectable by conventional bulk microbiological analyses. The developed approach is considered advantageous for the future targeted development of robust and sustainable antimicrobial surfaces.
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18
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Helbig R, Hannig M, Basche S, Ortgies J, Killge S, Hannig C, Sterzenbach T. Bioadhesion on Textured Interfaces in the Human Oral Cavity-An In Situ Study. Int J Mol Sci 2022; 23:ijms23031157. [PMID: 35163081 PMCID: PMC8835155 DOI: 10.3390/ijms23031157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/19/2022] [Accepted: 01/19/2022] [Indexed: 02/04/2023] Open
Abstract
Extensive biofilm formation on materials used in restorative dentistry is a common reason for their failure and the development of oral diseases like peri-implantitis or secondary caries. Therefore, novel materials and strategies that result in reduced biofouling capacities are urgently sought. Previous research suggests that surface structures in the range of bacterial cell sizes seem to be a promising approach to modulate bacterial adhesion and biofilm formation. Here we investigated bioadhesion within the oral cavity on a low surface energy material (perfluorpolyether) with different texture types (line-, hole-, pillar-like), feature sizes in a range from 0.7–4.5 µm and graded distances (0.7–130.5 µm). As a model system, the materials were fixed on splints and exposed to the oral cavity. We analyzed the enzymatic activity of amylase and lysozyme, pellicle formation, and bacterial colonization after 8 h intraoral exposure. In opposite to in vitro experiments, these in situ experiments revealed no clear signs of altered bacterial surface colonization regarding structure dimensions and texture types compared to unstructured substrates or natural enamel. In part, there seemed to be a decreasing trend of adherent cells with increasing periodicities and structure sizes, but this pattern was weak and irregular. Pellicle formation took place on all substrates in an unaltered manner. However, pellicle formation was most pronounced within recessed areas thereby partially masking the three-dimensional character of the surfaces. As the natural pellicle layer is obviously the most dominant prerequisite for bacterial adhesion, colonization in the oral environment cannot be easily controlled by structural means.
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Affiliation(s)
- Ralf Helbig
- Max Bergmann Center of Biomaterials, Leibniz-Institut für Polymerforschung, Hohe Straße 6, 01069 Dresden, Germany;
| | - Matthias Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, 66421 Homburg, Germany; (M.H.); (J.O.)
| | - Sabine Basche
- Clinic of Operative and Pediatric Density, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (S.B.); (C.H.)
| | - Janis Ortgies
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, 66421 Homburg, Germany; (M.H.); (J.O.)
| | - Sebastian Killge
- Institute of Semiconductor and Microsystems, Chair of Nanoelectronics, Technische Universität Dresden, 01609 Dresden, Germany;
| | - Christian Hannig
- Clinic of Operative and Pediatric Density, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (S.B.); (C.H.)
| | - Torsten Sterzenbach
- Clinic of Operative and Pediatric Density, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (S.B.); (C.H.)
- Correspondence: ; Tel.: +49-351-458-2250
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19
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Utilizing a Diffractive Focus Beam Shaper to Enhance Pattern Uniformity and Process Throughput during Direct Laser Interference Patterning. MATERIALS 2022; 15:ma15020591. [PMID: 35057308 PMCID: PMC8781107 DOI: 10.3390/ma15020591] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/23/2021] [Accepted: 12/23/2021] [Indexed: 11/17/2022]
Abstract
Uniform periodic microstructure formation over large areas is generally challenging in Direct Laser Interference Patterning (DLIP) due to the Gaussian laser beam intensity distribution inherent to most commercial laser sources. In this work, a diffractive fundamental beam-mode shaper (FBS) element is implemented in a four-beam DLIP optical setup to generate a square-shaped top-hat intensity distribution in the interference volume. The interference patterns produced by a standard configuration and the developed setup are measured and compared. In particular, the impact of both laser intensity distributions on process throughput as well as fill-factor is investigated by measuring the resulting microstructure height with height error over the structured surface. It is demonstrated that by utilizing top-hat-shaped interference patterns, it is possible to produce on average 44.8% deeper structures with up to 60% higher homogeneity at the same throughput. Moreover, the presented approach allows the production of microstructures with comparable height and homogeneity compared to the Gaussian intensity distribution with increased throughput of 53%.
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20
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Richter AM, Buchberger G, Stifter D, Duchoslav J, Hertwig A, Bonse J, Heitz J, Schwibbert K. Spatial Period of Laser-Induced Surface Nanoripples on PET Determines Escherichia coli Repellence. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:3000. [PMID: 34835763 PMCID: PMC8624992 DOI: 10.3390/nano11113000] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/03/2021] [Accepted: 11/05/2021] [Indexed: 12/18/2022]
Abstract
Bacterial adhesion and biofilm formation on surfaces are associated with persistent microbial contamination, biofouling, and the emergence of resistance, thus, calling for new strategies to impede bacterial surface colonization. Using ns-UV laser treatment (wavelength 248 nm and a pulse duration of 20 ns), laser-induced periodic surface structures (LIPSS) featuring different sub-micrometric periods ranging from ~210 to ~610 nm were processed on commercial poly(ethylene terephthalate) (PET) foils. Bacterial adhesion tests revealed that these nanorippled surfaces exhibit a repellence for E. coli that decisively depends on the spatial periods of the LIPSS with the strongest reduction (~91%) in cell adhesion observed for LIPSS periods of 214 nm. Although chemical and structural analyses indicated a moderate laser-induced surface oxidation, a significant influence on the bacterial adhesion was ruled out. Scanning electron microscopy and additional biofilm studies using a pili-deficient E. coli TG1 strain revealed the role of extracellular appendages in the bacterial repellence observed here.
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Affiliation(s)
- Anja M. Richter
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany; (A.H.); (J.B.); (K.S.)
| | - Gerda Buchberger
- Institute of Applied Physics, Johannes Kepler University Linz, Altenberger Strasse 69, 4040 Linz, Austria; (J.H.)
| | - David Stifter
- Center for Surface and Nanoanalytics, Johannes Kepler University Linz, Altenberger Strasse 69, 4040 Linz, Austria; (D.S.); (J.D.)
| | - Jiri Duchoslav
- Center for Surface and Nanoanalytics, Johannes Kepler University Linz, Altenberger Strasse 69, 4040 Linz, Austria; (D.S.); (J.D.)
| | - Andreas Hertwig
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany; (A.H.); (J.B.); (K.S.)
| | - Jörn Bonse
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany; (A.H.); (J.B.); (K.S.)
| | - Johannes Heitz
- Institute of Applied Physics, Johannes Kepler University Linz, Altenberger Strasse 69, 4040 Linz, Austria; (J.H.)
| | - Karin Schwibbert
- Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany; (A.H.); (J.B.); (K.S.)
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21
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Droumpali A, Hübner J, Gram L, Taboryski R. Fabrication of Microstructured Surface Topologies for the Promotion of Marine Bacteria Biofilm. MICROMACHINES 2021; 12:926. [PMID: 34442548 PMCID: PMC8401315 DOI: 10.3390/mi12080926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/29/2021] [Accepted: 07/29/2021] [Indexed: 11/30/2022]
Abstract
Several marine bacteria of the Roseobacter group can inhibit other microorganisms and are especially antagonistic when growing in biofilms. This aptitude to naturally compete with other bacteria can reduce the need for antibiotics in large-scale aquaculture units, provided that their culture can be promoted and controlled. Micropatterned surfaces may facilitate and promote the biofilm formation of species from the Roseobacter group, due to the increased contact between the cells and the surface material. Our research goal is to fabricate biofilm-optimal micropatterned surfaces and investigate the relevant length scales for surface topographies that can promote the growth and biofilm formation of the Roseobacter group of bacteria. In a preliminary study, silicon surfaces comprising arrays of pillars and pits with different periodicities, diameters, and depths were produced by UV lithography and deep reactive ion etching (DRIE) on polished silicon wafers. The resulting surface microscale topologies were characterized via optical profilometry and scanning electron microscopy (SEM). Screening of the bacterial biofilm on the patterned surfaces was performed using green fluorescent staining (SYBR green I) and confocal laser scanning microscopy (CLSM). Our results indicate that there is a correlation between the surface morphology and the spatial organization of the bacterial biofilm.
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Affiliation(s)
- Ariadni Droumpali
- National Centre for Nano Fabrication and Characterization, Technical University of Denmark, 2800 Kongens Lyngby, Denmark; (A.D.); (J.H.)
| | - Jörg Hübner
- National Centre for Nano Fabrication and Characterization, Technical University of Denmark, 2800 Kongens Lyngby, Denmark; (A.D.); (J.H.)
| | - Lone Gram
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Kongens Lyngby, Denmark;
| | - Rafael Taboryski
- National Centre for Nano Fabrication and Characterization, Technical University of Denmark, 2800 Kongens Lyngby, Denmark; (A.D.); (J.H.)
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22
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Kreve S, Dos Reis AC. Effect of surface properties of ceramic materials on bacterial adhesion: A systematic review. J ESTHET RESTOR DENT 2021; 34:461-472. [PMID: 34213078 DOI: 10.1111/jerd.12799] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 04/24/2021] [Accepted: 06/20/2021] [Indexed: 12/22/2022]
Abstract
PURPOSE The objective of this systematic review was to describe studies that report on whether surface characteristics such as electrostatic charge, surface free energy, and surface topography promote influence on bacterial adhesion on ceramic surfaces. MATERIAL AND METHOD Searches in the SCOPUS, PubMed/Medline, Web of Science, EMBASE, and Google Scholar databases were performed between December 2020 and January 2021 and updated in March 2021. In addition, a manual search of reference lists from relevant retrieved articles was performed. The criteria included: studies that evaluated ceramic surfaces, which described factors such as surface free energy, electrostatic charges, roughness, zeta potential, and their relationship with bacteria. RESULTS Database search resulted in 348 papers. Of the 24 studies selected for full reading, 17 articles remained in this systematic review. Another five studies were found in references of articles included, totaling 22 studies. These had a high heterogeneity making it difficult to perform statistical analysis, so a descriptive analysis was performed. CONCLUSIONS For dental ceramics, not enough results were found to demonstrate the influence of the electrostatic condition, and its relationship with bacterial adhesion. However, studies of this review show that there is a correlation between bacterial adhesion, surface free energy, and topography. CLINICAL SIGNIFICANCE The knowledge of ceramics with repulsive physical-chemical interactions would allow an environment suggestive of non-adhesion of pathogenic biofilm.
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Affiliation(s)
- Simone Kreve
- Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, USP-University of São Paulo, Ribeirão Preto, Brazil
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23
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Meinshausen AK, Herbster M, Zwahr C, Soldera M, Müller A, Halle T, Lasagni AF, Bertrand J. Aspect ratio of nano/microstructures determines Staphylococcus aureus adhesion on PET and titanium surfaces. J Appl Microbiol 2021; 131:1498-1514. [PMID: 33565669 DOI: 10.1111/jam.15033] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/26/2021] [Accepted: 02/06/2021] [Indexed: 01/09/2023]
Abstract
AIMS Joint infections cause premature implant failure. The avoidance of bacterial colonization of implant materials by modification of the material surface is therefore the focus of current research. In this in vitro study the complex interaction of periodic structures on PET and titanium surfaces on the adhesion of Staphylococcus aureus is analysed. METHODS AND RESULTS Using direct laser interference patterning as well as roll-to-roll hot embossing methods, structured periodic textures of different spatial distance were produced on surfaces and S. aureus were cultured for 24 h on these. The amount of adhering bacteria was quantified using fluorescence microscopy and the local adhesion behaviour was investigated using scanning electron microscopy. For PET structures, minimal bacterial adhesion was identified for an aspect ratio of about 0·02. On titanium structures, S. aureus adhesion was significantly decreased for profile heights of < 200 nm. Our results show a significantly decreased bacterial adhesion for structures with an aspect ratio range of 0·02 to 0·05. CONCLUSIONS We show that structuring on surfaces can decrease the amount of S. aureus on titanium and PET as common implant materials. SIGNIFICANCE AND IMPACT OF THE STUDY The study highlights the immense potential of applying specific structures to implant materials to prevent implant colonization with pathogen bacteria.
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Affiliation(s)
- A-K Meinshausen
- Department of Orthopedic Surgery, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - M Herbster
- Department of Orthopedic Surgery, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.,Institute of Materials and Joining Technology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - C Zwahr
- Chair of Large Area Laser Based Surface Structuring, Technische Universität Dresden, Dresden, Germany
| | - M Soldera
- Chair of Large Area Laser Based Surface Structuring, Technische Universität Dresden, Dresden, Germany
| | - A Müller
- Institute for Molecular and Clinical Immunology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.,Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - T Halle
- Institute of Materials and Joining Technology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - A F Lasagni
- Chair of Large Area Laser Based Surface Structuring, Technische Universität Dresden, Dresden, Germany.,Fraunhofer Institute for Material and Beam Technology IWS, Dresden, Germany
| | - J Bertrand
- Department of Orthopedic Surgery, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
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24
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Benčina M, Resnik M, Starič P, Junkar I. Use of Plasma Technologies for Antibacterial Surface Properties of Metals. Molecules 2021; 26:1418. [PMID: 33808010 PMCID: PMC7961478 DOI: 10.3390/molecules26051418] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/02/2021] [Accepted: 03/02/2021] [Indexed: 02/07/2023] Open
Abstract
Bacterial infections of medical devices present severe problems connected with long-term antibiotic treatment, implant failure, and high hospital costs. Therefore, there are enormous demands for innovative techniques which would improve the surface properties of implantable materials. Plasma technologies present one of the compelling ways to improve metal's antibacterial activity; plasma treatment can significantly alter metal surfaces' physicochemical properties, such as surface chemistry, roughness, wettability, surface charge, and crystallinity, which all play an important role in the biological response of medical materials. Herein, the most common plasma treatment techniques like plasma spraying, plasma immersion ion implantation, plasma vapor deposition, and plasma electrolytic oxidation as well as novel approaches based on gaseous plasma treatment of surfaces are gathered and presented. The latest results of different surface modification approaches and their influence on metals' antibacterial surface properties are presented and critically discussed. The mechanisms involved in bactericidal effects of plasma-treated surfaces are discussed and novel results of surface modification of metal materials by highly reactive oxygen plasma are presented.
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Affiliation(s)
| | | | | | - Ita Junkar
- Department of Surface Engineering, Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia; (M.B.); (M.R.); (P.S.)
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25
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Zheng S, Bawazir M, Dhall A, Kim HE, He L, Heo J, Hwang G. Implication of Surface Properties, Bacterial Motility, and Hydrodynamic Conditions on Bacterial Surface Sensing and Their Initial Adhesion. Front Bioeng Biotechnol 2021; 9:643722. [PMID: 33644027 PMCID: PMC7907602 DOI: 10.3389/fbioe.2021.643722] [Citation(s) in RCA: 213] [Impact Index Per Article: 71.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 01/25/2021] [Indexed: 12/29/2022] Open
Abstract
Biofilms are structured microbial communities attached to surfaces, which play a significant role in the persistence of biofoulings in both medical and industrial settings. Bacteria in biofilms are mostly embedded in a complex matrix comprised of extracellular polymeric substances that provide mechanical stability and protection against environmental adversities. Once the biofilm is matured, it becomes extremely difficult to kill bacteria or mechanically remove biofilms from solid surfaces. Therefore, interrupting the bacterial surface sensing mechanism and subsequent initial binding process of bacteria to surfaces is essential to effectively prevent biofilm-associated problems. Noting that the process of bacterial adhesion is influenced by many factors, including material surface properties, this review summarizes recent works dedicated to understanding the influences of surface charge, surface wettability, roughness, topography, stiffness, and combination of properties on bacterial adhesion. This review also highlights other factors that are often neglected in bacterial adhesion studies such as bacterial motility and the effect of hydrodynamic flow. Lastly, the present review features recent innovations in nanotechnology-based antifouling systems to engineer new concepts of antibiofilm surfaces.
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Affiliation(s)
- Sherry Zheng
- Department of Preventive & Restorative Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Marwa Bawazir
- Department of Preventive & Restorative Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Atul Dhall
- Department of Preventive & Restorative Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Hye-Eun Kim
- Department of Preventive & Restorative Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Le He
- Department of Preventive & Restorative Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Joseph Heo
- Department of Preventive & Restorative Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Geelsu Hwang
- Department of Preventive & Restorative Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, United States
- Center for Innovation & Precision Dentistry, School of Dental Medicine, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, United States
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26
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Müller DW, Holtsch A, Lößlein S, Pauly C, Spengler C, Grandthyll S, Jacobs K, Mücklich F, Müller F. In-Depth Investigation of Copper Surface Chemistry Modification by Ultrashort Pulsed Direct Laser Interference Patterning. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13415-13425. [PMID: 33141584 DOI: 10.1021/acs.langmuir.0c01625] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Surface patterning in the micro- and nanometer-range by means of pulsed laser interference has repeatedly proven to be a versatile tool for surface functionalization. With these techniques, however, the surface is often changed not only in terms of morphology but also in terms of surface chemistry. In this study, we present an in-depth investigation of the chemical surface modification occurring during surface patterning of copper by ultrashort pulsed direct laser interference patterning (USP-DLIP). A multimethod approach of parallel analysis using visualizing, topography-sensitive, and spectroscopic techniques allowed a detailed quantification of surface morphology as well as composition and distribution of surface chemistry related to both processing and atmospheric aging. The investigations revealed a heterogeneous surface composition separated in peak and valley regions predominantly consisting of Cu2O, as well as superficial agglomerations of CuO and carbon species. The evaluation was supported by a modeling approach for the quantification of XPS results in relation to heterogeneous surface composition, which was observed by means of a combination of different spectroscopic techniques. The overall results provide a detailed understanding of the chemical and topographical surface modification during USP-DLIP, which allows a more targeted use of this technology for surface functionalization.
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Affiliation(s)
- Daniel W Müller
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123 Saarbrücken, Germany
| | - Anne Holtsch
- Experimental Physics and Center for Biophysics, Saarland University, 66123 Saarbrücken, Germany
| | - Sarah Lößlein
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123 Saarbrücken, Germany
| | - Christoph Pauly
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123 Saarbrücken, Germany
| | - Christian Spengler
- Experimental Physics and Center for Biophysics, Saarland University, 66123 Saarbrücken, Germany
| | - Samuel Grandthyll
- Experimental Physics and Center for Biophysics, Saarland University, 66123 Saarbrücken, Germany
| | - Karin Jacobs
- Experimental Physics and Center for Biophysics, Saarland University, 66123 Saarbrücken, Germany
| | - Frank Mücklich
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123 Saarbrücken, Germany
| | - Frank Müller
- Experimental Physics and Center for Biophysics, Saarland University, 66123 Saarbrücken, Germany
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27
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Physical methods for controlling bacterial colonization on polymer surfaces. Biotechnol Adv 2020; 43:107586. [DOI: 10.1016/j.biotechadv.2020.107586] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 06/05/2020] [Accepted: 07/06/2020] [Indexed: 02/06/2023]
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28
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Sterzenbach T, Helbig R, Hannig C, Hannig M. Bioadhesion in the oral cavity and approaches for biofilm management by surface modifications. Clin Oral Investig 2020; 24:4237-4260. [PMID: 33111157 PMCID: PMC7666681 DOI: 10.1007/s00784-020-03646-1] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 10/15/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND All soft and solid surface structures in the oral cavity are covered by the acquired pellicle followed by bacterial colonization. This applies for natural structures as well as for restorative or prosthetic materials; the adherent bacterial biofilm is associated among others with the development of caries, periodontal diseases, peri-implantitis, or denture-associated stomatitis. Accordingly, there is a considerable demand for novel materials and coatings that limit and modulate bacterial attachment and/or propagation of microorganisms. OBJECTIVES AND FINDINGS The present paper depicts the current knowledge on the impact of different physicochemical surface characteristics on bioadsorption in the oral cavity. Furthermore, it was carved out which strategies were developed in dental research and general surface science to inhibit bacterial colonization and to delay biofilm formation by low-fouling or "easy-to-clean" surfaces. These include the modulation of physicochemical properties such as periodic topographies, roughness, surface free energy, or hardness. In recent years, a large emphasis was laid on micro- and nanostructured surfaces and on liquid repellent superhydrophic as well as superhydrophilic interfaces. Materials incorporating mobile or bound nanoparticles promoting bacteriostatic or bacteriotoxic properties were also used. Recently, chemically textured interfaces gained increasing interest and could represent promising solutions for innovative antibioadhesion interfaces. Due to the unique conditions in the oral cavity, mainly in vivo or in situ studies were considered in the review. CONCLUSION Despite many promising approaches for modulation of biofilm formation in the oral cavity, the ubiquitous phenomenon of bioadsorption and adhesion pellicle formation in the challenging oral milieu masks surface properties and therewith hampers low-fouling strategies. CLINICAL RELEVANCE Improved dental materials and surface coatings with easy-to-clean properties have the potential to improve oral health, but extensive and systematic research is required in this field to develop biocompatible and effective substances.
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Affiliation(s)
- Torsten Sterzenbach
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307, Dresden, Germany.
| | - Ralf Helbig
- Max Bergmann Center of Biomaterials, Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069, Dresden, Germany
| | - Christian Hannig
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307, Dresden, Germany
| | - Matthias Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, 66421, Homburg/Saar, Germany
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29
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Harvey HJ, Wildman RD, Mooney SJ, Avery SV. Challenges and approaches in assessing the interplay between microorganisms and their physical micro-environments. Comput Struct Biotechnol J 2020; 18:2860-2866. [PMID: 33133427 PMCID: PMC7588748 DOI: 10.1016/j.csbj.2020.09.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/17/2020] [Accepted: 09/18/2020] [Indexed: 12/22/2022] Open
Abstract
Spatial structure over scales ranging from nanometres to centimetres (and beyond) varies markedly in diverse habitats and the industry-relevant settings that support microbial activity. Developing an understanding of the interplay between a structured environment and the associated microbial processes and ecology is fundamental, but challenging. Several novel approaches have recently been developed and implemented to help address key questions for the field: from the use of imaging tools such as X-ray Computed Tomography to explore microbial growth in soils, to the fabrication of scratched materials to examine microbial-surface interactions, to the design of microfluidic devices to track microbial biofilm formation and the metabolic processes therein. This review discusses new approaches and challenges for incorporating structured elements into the study of microbial processes across different scales. We highlight how such methods can be pivotal for furthering our understanding of microbial interactions with their environments.
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Affiliation(s)
- Harry J. Harvey
- School of Life Sciences, University of Nottingham, Nottingham, UK
| | - Ricky D. Wildman
- Faculty of Engineering, University of Nottingham, Nottingham, UK
| | - Sacha J. Mooney
- School of Biosciences, University of Nottingham, Nottingham, UK
| | - Simon V. Avery
- School of Life Sciences, University of Nottingham, Nottingham, UK
- Corresponding author.
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30
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Tamayo L, Melo F, Caballero L, Hamm E, Díaz M, Leal MS, Guiliani N, Urzúa MD. Does Bacterial Elasticity Affect Adhesion to Polymer Fibers? ACS APPLIED MATERIALS & INTERFACES 2020; 12:14507-14517. [PMID: 32118396 DOI: 10.1021/acsami.9b21060] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The factors governing bacterial adhesion to substrates with different topographies are still not fully identified. The present work seeks to elucidate for the first time and with quantitative data the roles of bacterial elasticity and shape and substrate topography in bacterial adhesion. With this aim, populations of three bacterial species, P. aeruginosa DSM 22644, B. subtilis DSM 10, and S. aureus DSM 20231 adhered on flat substrates covered with electrospun polycaprolactone fibers of different diameters ranging from 0.4 to 5.5 μm are counted. Populations of bacterial cells are classified according to the preferred binding sites of the bacteria to the substrate. The colloidal probe technique was used to assess the stiffness of the bacteria and bacteria-polymer surface adhesion energy. A theoretical model is developed to interpret the observed populations in terms of a balance between stiffness and adhesion energy of the bacteria. The model, which also incorporates the radius of the fiber and the size and shape of the bacteria, predicts increased adhesion for a low level of stiffness and for a larger number of available bacteria-fiber contact points. Te adhesive propensity of bacteria depends in a nontrivial way on the radius of the fibers due to the random arrangement of fibers.
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Affiliation(s)
- Laura Tamayo
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras, Santiago 3425, Chile
| | - Francisco Melo
- Departamento Física, Facultad de Ciencia, Universidad de Santiago de Chile, Avenida Ecuador, Santiago 3493, Chile
- Center for Soft Matter Research, SMAT-C, Avenida Libertador Bernardo O'Higgins, Santiago 3363, Chile
| | - Leonardo Caballero
- Departamento Física, Facultad de Ciencia, Universidad de Santiago de Chile, Avenida Ecuador, Santiago 3493, Chile
- Center for Soft Matter Research, SMAT-C, Avenida Libertador Bernardo O'Higgins, Santiago 3363, Chile
| | - Eugenio Hamm
- Departamento Física, Facultad de Ciencia, Universidad de Santiago de Chile, Avenida Ecuador, Santiago 3493, Chile
| | - M Díaz
- Laboratorio de Comunicación Bacteriana, Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Las Palmeras, Ñuñoa, Santiago 3425, Chile
| | - M S Leal
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras, Santiago 3425, Chile
| | - N Guiliani
- Laboratorio de Comunicación Bacteriana, Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Las Palmeras, Ñuñoa, Santiago 3425, Chile
| | - M D Urzúa
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras, Santiago 3425, Chile
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31
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Müller DW, Fox T, Grützmacher PG, Suarez S, Mücklich F. Applying Ultrashort Pulsed Direct Laser Interference Patterning for Functional Surfaces. Sci Rep 2020; 10:3647. [PMID: 32108155 PMCID: PMC7046748 DOI: 10.1038/s41598-020-60592-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 02/13/2020] [Indexed: 11/09/2022] Open
Abstract
Surface structures in the micro- and nanometre length scale exert a major influence on performance and functionality for many specialized applications in surface engineering. However, they are often limited to certain pattern scales and materials, depending on which processing technique is used. Likewise, the morphology of the topography is in complex relation to the utilized processing methodology. In this study, the generation of hierarchical surface structures in the micro- as well as the sub-micrometre scale was achieved on ceramic, polymer and metallic materials by utilizing Ultrashort Pulsed Direct Laser Interference Patterning (USP-DLIP). The morphologies of the generated patterns where examined in relation to the unique physical interaction of each material with ultrashort pulsed laser irradiation. In this context, the pattern formation on copper, CuZn37 brass and AISI 304 stainless steel was investigated in detail by means of a combination of experiment and simulation to understand the individual thermal interactions involved in USP-DLIP processing. Thereby, the pattern's hierarchical topography could be tailored besides achieving higher process control in the production of patterns in the sub-µm range by USP-DLIP.
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Affiliation(s)
- Daniel Wyn Müller
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123, Saarbrücken, Germany.
| | - Tobias Fox
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123, Saarbrücken, Germany
| | - Philipp G Grützmacher
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123, Saarbrücken, Germany
| | - Sebastian Suarez
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123, Saarbrücken, Germany
| | - Frank Mücklich
- Chair of Functional Materials, Department of Materials Science, Saarland University, 66123, Saarbrücken, Germany
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32
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Oai K, Inoue Y, Nakao A, Fukazawa K, Ishihara K. Antibacterial effect of nanometer‐size grafted layer of quaternary ammonium polymer on poly(ether ether ketone) substrate. J Appl Polym Sci 2020. [DOI: 10.1002/app.49088] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Keiko Oai
- Department of Materials Engineering, School of EngineeringThe University of Tokyo Tokyo Japan
| | - Yuuki Inoue
- Department of Materials Engineering, School of EngineeringThe University of Tokyo Tokyo Japan
| | | | - Kyoko Fukazawa
- Department of Materials Engineering, School of EngineeringThe University of Tokyo Tokyo Japan
| | - Kazuhiko Ishihara
- Department of Materials Engineering, School of EngineeringThe University of Tokyo Tokyo Japan
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33
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Xie K, Guo Y, Zhao S, Wang L, Wu J, Tan J, Yang Y, Wu W, Jiang W, Hao Y. Partially Melted Ti6Al4V Particles Increase Bacterial Adhesion and Inhibit Osteogenic Activity on 3D-printed Implants: An In Vitro Study. Clin Orthop Relat Res 2019; 477:2772-2782. [PMID: 31764350 PMCID: PMC6907305 DOI: 10.1097/corr.0000000000000954] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 08/14/2019] [Indexed: 01/31/2023]
Abstract
BACKGROUND A porous Ti6Al4V implant that is manufactured using selective laser melting (SLM) has broad potential applications in the field of orthopaedic implants. The pore structure of the SLM porous Ti6Al4V implant allows for cell migration and osteogenic differentiation, which is favorable for bone ingrowth and osseointegration. However, it is unclear whether the pore structure and partially melted Ti6Al4V particles on a SLM porous Ti6Al4V implant will increase bacterial adhesion and, perhaps, the risk of implant-related infection. QUESTIONS/PURPOSES (1) Is there more bacterial adhesion and colonization on SLM porous Ti6Al4V implants than on polished orthopaedic implants? (2) Do partially melted Ti6Al4V particles on SLM porous Ti6Al4V implants reduce human bone mesenchymal stem cells (hBMSCs) adhesion, viability, and activity? METHODS To determine bacterial adhesion and biofilm formation, we incubated five different Ti6Al4V discs (polished, grit-blasted, plasma-sprayed, particle SLM porous, and nonparticle SLM porous discs) with methicillin-resistant Staphylococcus aureus (MRSA) and Escherichia coli. Bacterial coverage on the surface of the five different Ti6Al4V discs were evaluated based on scanning electron microscopy (SEM) images quantitatively. In addition, a spread-plate method was used to quantitatively evaluate the bacterial adhesion on those implants. The biofilm formation was stained with crystal violet and semi-quantitatively determined with a microplate reader. The morphology and adhesion of hBMSCs on the five Ti6Al4V discs were observed with SEM. The cell viability was quantitatively evaluated with a Cell Counting Kit-8 assay. In addition, the osteogenic activity was determined in vitro with a quantitatively alkaline phosphatase activity assay and alizarin-red staining. For semiquantitative analysis, the alizarin-red stained mineralized nodules were dissolved and determined with a microplate reader. RESULTS The polished discs had the lowest MRSA adhesion (8.3% ± 2.6%) compared with grit-blasted (19.1% ± 3.9%; p = 0.006), plasma-sprayed (38.5% ± 5.3%; p < 0.001), particle (23.1% ± 2.8%; p < 0.001), and nonparticle discs (15.7% ± 2.5%; p = 0.003). Additionally, when comparing the two SLM discs, we found that particle discs had higher bacterial coverage than nonparticle discs (23.1% ± 2.8% versus 15.7% ± 2.5%; p = 0.020). An E. coli analysis showed similar results, with the higher adhesion to particle SLM discs than to nonparticle discs (20.7% ± 4.2% versus 14.4% ± 3.6%; p = 0.011). In addition, on particle SLM porous discs, bacterial colonies were localized around the partially melted Ti6Al4V particles, based on SEM images. After a 7-day incubation period, the cell viability in the particle group (optical density value 0.72 ± 0.05) was lower than that in the nonparticle groups (optical density value: 0.87 ± 0.08; p = 0.003). Alkaline phosphatase activity, as a marker of osteogenic differentiation, was lower in the particle group than in the nonparticle group (1.32 ± 0.12 U/mL versus 1.58 ± 0.09 U/mL; p = 0.012). CONCLUSION Higher bacterial adhesion was observed on SLM porous discs than on polished discs. The partially melted Ti6Al4V particles on SLM porous discs not only enhanced bacterial adhesion but also inhibited the osteogenic activity of hBMSCs. Postprocessing treatment is necessary to remove partially melted Ti6Al4V particles on an SLM implant before further use. Additional studies are needed to determine whether an SLM porous Ti6Al4V implant increases the risk of implant-related infection in vivo. CLINICAL RELEVANCE As implants with porous Ti6Al4V made using SLM are being designed, our preliminary findings suggest that postprocessing treatment is needed to remove partially melted Ti6Al4V particles before further use. In addition, the depth of the porous structure of the SLM implant should not exceed the maximum depth of bone ingrowth because the host immune defense cannot prevent bacterial adhesion without integration.
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Affiliation(s)
- Kai Xie
- K. Xie, Y. Guo, S. Zhao, L. Wang, J. Wu, J. Tan, Y. Yang, W. Wu, Y. Hao, Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China W. Jiang, Y. Hao, Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Bacterial Adhesion on Femtosecond Laser-Modified Polyethylene. MATERIALS 2019; 12:ma12193107. [PMID: 31554197 PMCID: PMC6804235 DOI: 10.3390/ma12193107] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 09/16/2019] [Accepted: 09/20/2019] [Indexed: 12/15/2022]
Abstract
In this study, femtosecond laser-induced sub-micrometer structures are generated to modify polyethylene (PE) surface topographies. These surfaces were subjected to bacterial colonization studies with Escherichia coli and Staphylococcus aureus as test strains. The results reveal that the nanostructures do not influence S. aureus coverage, while the adhesion of E. coli is reduced.
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Doll PW, Wolf M, Guttmann M, Thelen R, Ahrens R, Spindler B, Guber AE, Al-Ahmad A. Initial Bacterial Adhesion Properties of Anodically Oxidized Ti 6Al 4V. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2019; 2019:6476-6480. [PMID: 31947325 DOI: 10.1109/embc.2019.8857956] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This paper reports about the initial interaction of bacteria with anodically oxidized Ti6Al4V for the use as dental implant abutment surfaces. Ti6Al4V samples are anodically oxidized in hydrofluoric acid using different voltages. The resulting nanotopographies are characterized by atomic force microscopy, scanning electron microscopy and contact angle measurements. The topographies reach from micro-porous structures with small nanoporosities on top to fully hexagonally aligned nanotubes. For initial bacterial adhesion tests, Escherichia coli and Staphylococcus aureus are used. Samples are incubated for 2 h and afterwards non-adherent cells are washed off. The results of live/dead staining and cell counts are presented. Gram-negative and Gram-positive strains show different behavior in respect to total number of initially adherent cells on different micro/nanotopographies. The observed reduction of adhered microorganisms is mainly based on underlying microporous topographies.
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Zwahr C, Helbig R, Werner C, Lasagni AF. Fabrication of multifunctional titanium surfaces by producing hierarchical surface patterns using laser based ablation methods. Sci Rep 2019; 9:6721. [PMID: 31040334 PMCID: PMC6491492 DOI: 10.1038/s41598-019-43055-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 04/15/2019] [Indexed: 01/16/2023] Open
Abstract
Textured implant surfaces with micrometer and sub-micrometer features can improve contact properties like cell adhesion and bacteria repellency. A critical point of these surfaces is their mechanical stability during implantation. Therefore, strategies capable to provide both biocompatibility for an improved implant healing and resistance to wear for protecting the functional surface are required. In this work, laser-based fabrication methods have been used to produce hierarchical patterns on titanium surfaces. Using Direct Laser Writing with a nanosecond pulsed laser, crater-like structures with a separation distance of 50 µm are produced on unpolished titanium surfaces. Directly on this texture, a hole-like pattern with 5 µm spatial period is generated using Direct Laser Interference Patterning with picosecond pulses. While the smaller features should reduce the bacterial adhesion, the larger geometry was designed to protect the smaller features from wear. On the multifunctional surface, the adherence of E. Coli bacteria is reduced by 30% compared to the untreated reference. In addition, wear test performed on the multiple-scale patterns demonstrated the possibility to protect the smaller features by the larger craters. Also, the influence of the laser treatment on the growth of a titanium oxide layer was evaluated using Energy Dispersive X-Ray Spectroscopy analysis.
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Affiliation(s)
- Christoph Zwahr
- Institute of Manufacturing Technology, Technische Universität Dresden, George-Bähr Str. 3c, 01069, Dresden, Germany. .,Fraunhofer-Institut für Werkstoff- und Strahltechnik (IWS), Winterbergstraße 28, 01277, Dresden, Germany.
| | - Ralf Helbig
- Institute of Biofunctional Polymer Materials, Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069, Dresden, Germany
| | - Carsten Werner
- Institute of Biofunctional Polymer Materials, Leibniz-Institut für Polymerforschung Dresden e. V., Hohe Straße 6, 01069, Dresden, Germany
| | - Andrés Fabián Lasagni
- Institute of Manufacturing Technology, Technische Universität Dresden, George-Bähr Str. 3c, 01069, Dresden, Germany.,Fraunhofer-Institut für Werkstoff- und Strahltechnik (IWS), Winterbergstraße 28, 01277, Dresden, Germany
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Yang F, Chang TL, Liu T, Wu D, Du H, Liang J, Tian F. Label-free detection of Staphylococcus aureus bacteria using long-period fiber gratings with functional polyelectrolyte coatings. Biosens Bioelectron 2019; 133:147-153. [PMID: 30927678 DOI: 10.1016/j.bios.2019.03.024] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 03/13/2019] [Accepted: 03/13/2019] [Indexed: 11/28/2022]
Abstract
Highly sensitive long-period fiber gratings (LPFG) was developed for label-free and rapid detection of Staphylococcus aureus (S. aureus). Specifically, the LPFG was functionalized with antibody and nanopitted polyelectrolyte coatings to facilitate bacterial adhesion and thus enhance the sensitivity of bacteria detection. The kinetics of S. aureus adhesion on functional coatings were tracked by surface morphology evolution and time-resolved resonance wavelength shift of the coated LPFG at a flow rate of 30 μl/ml and 37 °C in the concentration range of 104-108 colony forming unit (CFU)/ml. S. aureus detection at concentrations as low as 224 CFU/ml can be achieved within a short time span of 30 min. The LPFG-based biosensor can be readily adapted to a variety of biophotonic platforms, for applications such as food safety inspection, environmental monitoring, clinical diagnostics, and medical applications.
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Affiliation(s)
- Fan Yang
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, NJ 07030, United States.
| | - Tzu-Lan Chang
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, NJ 07030, United States.
| | - Tianchi Liu
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, NJ 07030, United States.
| | - Di Wu
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, NJ 07030, United States.
| | - Henry Du
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, NJ 07030, United States.
| | - Junfeng Liang
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, NJ 07030, United States.
| | - Fei Tian
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, NJ 07030, United States.
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Berne C, Ellison CK, Ducret A, Brun YV. Bacterial adhesion at the single-cell level. Nat Rev Microbiol 2018; 16:616-627. [DOI: 10.1038/s41579-018-0057-5] [Citation(s) in RCA: 266] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Champigneux P, Delia ML, Bergel A. Impact of electrode micro- and nano-scale topography on the formation and performance of microbial electrodes. Biosens Bioelectron 2018; 118:231-246. [PMID: 30098490 DOI: 10.1016/j.bios.2018.06.059] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 06/25/2018] [Accepted: 06/27/2018] [Indexed: 02/05/2023]
Abstract
From a fundamental standpoint, microbial electrochemistry is unravelling a thrilling link between life and materials. Technically, it may be the source of a large number of new processes such as microbial fuel cells for powering remote sensors, autonomous sensors, microbial electrolysers and equipment for effluent treatment. Microbial electron transfers are also involved in many natural processes such as biocorrosion. In these contexts, a huge number of studies have dealt with the impact of electrode materials, coatings and surface functionalizations but very few have focused on the effect of the surface topography, although it has often been pointed out as a key parameter impacting the performance of electroactive biofilms. The first part of the review gives an overview of the influence of electrode topography on abiotic electrochemical reactions. The second part recalls some basics of the effect of surface topography on bacterial adhesion and biofilm formation, in a broad domain reaching beyond the context of electroactivity. On these well-established bases, the effect of surface topography is reviewed and analysed in the field of electroactive biofilms. General trends are extracted and fundamental questions are pointed out, which should be addressed to boost future research endeavours. The objective is to provide basic guidelines useful to the widest possible range of research communities so that they can exploit surface topography as a powerful lever to improve, or to mitigate in the case of biocorrosion for instance, the performance of electrode/biofilm interfaces.
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Affiliation(s)
- Pierre Champigneux
- Laboratoire de Génie Chimique, CNRS, Université de Toulouse (INPT), 4 allée Emile Monso, 31432 Toulouse, France
| | - Marie-Line Delia
- Laboratoire de Génie Chimique, CNRS, Université de Toulouse (INPT), 4 allée Emile Monso, 31432 Toulouse, France
| | - Alain Bergel
- Laboratoire de Génie Chimique, CNRS, Université de Toulouse (INPT), 4 allée Emile Monso, 31432 Toulouse, France.
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Abstract
Escherichia coli and Staphylococcus aureus bacterial retention on mirror-polished and ultrashort pulse laser-textured surfaces is quantified with a new approach based on ISO standards for measurement of antibacterial performance. It is shown that both wettability and surface morphology influence antibacterial behavior, with neither superhydrophobicity nor low surface roughness alone sufficient for reducing initial retention of either tested cell type. Surface structures comprising spikes, laser-induced periodic surface structures (LIPSS) and nano-pillars are produced with 1030 nm wavelength 350 fs laser pulses of energy 19.1 μJ, 1.01 μJ and 1.46 μJ, respectively. SEM analysis, optical profilometry, shear force microscopy and wettability analysis reveal surface structures with peak separations of 20–40 μm, 0.5–0.9 μm and 0.8–1.3 μm, average areal surface roughness of 8.6 μm, 90 nm and 60 nm and static water contact angles of 160°, 119° and 140°, respectively. E. coli retention is highest for mirror-polished specimens and spikes whose characteristic dimensions are much larger than the cell size. S. aureus retention is instead found to be inhibited under the same conditions due to low surface roughness for mirror-polished samples (Sa: 30 nm) and low wettability for spikes. LIPSS and nano-pillars are found to reduce E. coli retention by 99.8% and 99.2%, respectively, and S. aureus retention by 84.7% and 79.9% in terms of viable colony forming units after two hours of immersion in bacterial broth due to both low wettability and fine surface features that limit the number of available attachment points. The ability to tailor both wettability and surface morphology via ultrashort pulsed laser processing confirms this approach as an important tool for producing the next generation of antibacterial surfaces.
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Hannig C, Helbig R, Hilsenbeck J, Werner C, Hannig M. Impact of the springtail's cuticle nanotopography on bioadhesion and biofilm formation in vitro and in the oral cavity. ROYAL SOCIETY OPEN SCIENCE 2018; 5:171742. [PMID: 30109045 PMCID: PMC6083677 DOI: 10.1098/rsos.171742] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 05/31/2018] [Indexed: 05/15/2023]
Abstract
Springtails (Collembola) have a nanostructured cuticle. To evaluate and to understand anti-biofouling properties of springtail cuticles' morphology under different conditions, springtails, shed cuticles and cuticle replicates were studied after incubation with protein solutions and bacterial cultures using common in vitro models. In a second step, they were exposed to human oral environment in situ in order to explore potential application in dentistry. In vitro, the cuticular structures were found to resist wetting by albumin solutions for up to 3 h and colonization by Staphylococcus epidermidis was inhibited. When exposed in the oral cavity, initial pellicle formation was of high heterogeneity: parts of the surface were coated by adsorbed proteins, others remained uncoated but exhibited locally attached, 'bridging', proteinaceous membranes spanning across cavities of the cuticle surface; this unique phenomenon was observed for the first time. Also the degree of bacterial colonization varied considerably. In conclusion, the springtail cuticle partially modulates bioadhesion in the oral cavity in a unique and specific manner, but it has no universal effect. Especially after longer exposure, the nanotextured surface of springtails is masked by the pellicle, resulting in subsequent bacterial colonization, and, thus, cannot effectively avoid bioadhesion in the oral cavity comprehensively. Nevertheless, the observed phenomena offer valuable information and new perspectives for the development of antifouling surfaces applicable in the oral cavity.
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Affiliation(s)
- Christian Hannig
- Clinic of Operative and Pediatric Dentistry, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany
- Author for correspondence: Christian Hannig e-mail:
| | - Ralf Helbig
- Max Bergmann Center of Biomaterials, Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Germany
| | - Julia Hilsenbeck
- Max Bergmann Center of Biomaterials, Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Germany
| | - Carsten Werner
- Max Bergmann Center of Biomaterials, Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Germany
| | - Matthias Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University Hospital, Saarland University, Building 73, 66421 Homburg/Saar, Germany
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Mi G, Shi D, Wang M, Webster TJ. Reducing Bacterial Infections and Biofilm Formation Using Nanoparticles and Nanostructured Antibacterial Surfaces. Adv Healthc Mater 2018; 7:e1800103. [PMID: 29790304 DOI: 10.1002/adhm.201800103] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 03/29/2018] [Indexed: 02/02/2023]
Abstract
With the rapid spreading of resistance among common bacterial pathogens, bacterial infections, especially antibiotic-resistant bacterial infections, have drawn much attention worldwide. In light of this, nanoparticles, including metal and metal oxide nanoparticles, liposomes, polymersomes, and solid lipid nanoparticles, have been increasingly exploited as both efficient antimicrobials themselves or as delivery platforms to enhance the effectiveness of existing antibiotics. In addition to the emergence of widespread antibiotic resistance, of equal concern are implantable device-associated infections, which result from bacterial adhesion and subsequent biofilm formation at the site of implantation. The ineffectiveness of conventional antibiotics against these biofilms often leads to revision surgery, which is both debilitating to the patient and expensive. Toward this end, micro- and nanotopographies, especially those that resemble natural surfaces, and nonfouling chemistries represent a promising combination for long-term antibacterial activity. Collectively, the use of nanoparticles and nanostructured surfaces to combat bacterial growth and infections is a promising solution to the growing problem of antibiotic resistance and biofilm-related device infections.
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Affiliation(s)
- Gujie Mi
- Department of Chemical Engineering; 313 Snell Engineering Center; Northeastern University; 360 Huntington Avenue Boston MA 02115 USA
| | - Di Shi
- Department of Chemical Engineering; 313 Snell Engineering Center; Northeastern University; 360 Huntington Avenue Boston MA 02115 USA
| | - Mian Wang
- Department of Chemical Engineering; 313 Snell Engineering Center; Northeastern University; 360 Huntington Avenue Boston MA 02115 USA
| | - Thomas J. Webster
- Department of Chemical Engineering; 313 Snell Engineering Center; Northeastern University; 360 Huntington Avenue Boston MA 02115 USA
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Katuri KP, Kalathil S, Ragab A, Bian B, Alqahtani MF, Pant D, Saikaly PE. Dual-Function Electrocatalytic and Macroporous Hollow-Fiber Cathode for Converting Waste Streams to Valuable Resources Using Microbial Electrochemical Systems. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1707072. [PMID: 29707854 DOI: 10.1002/adma.201707072] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Indexed: 06/08/2023]
Abstract
Dual-function electrocatalytic and macroporous hollow-fiber cathodes are recently proposed as promising advanced material for maximizing the conversion of waste streams such as wastewater and waste CO2 to valuable resources (e.g., clean freshwater, energy, value-added chemicals) in microbial electrochemical systems. The first part of this progress report reviews recent developments in this type of cathode architecture for the simultaneous recovery of clean freshwater and energy from wastewater. Critical insights are provided on suitable materials for fabricating these cathodes, as well as addressing some challenges in the fabrication process with proposed strategies to overcome them. The second and complementary part of the progress report highlights how the unique features of this cathode architecture can solve one of the intrinsic bottlenecks (gas-liquid mass transfer limitation) in the application of microbial electrochemical systems for CO2 reduction to value-added products. Strategies to further improve the availability of CO2 to microbial catalysts on the cathode are proposed. The importance of understanding microbe-cathode interactions, as well as electron transfer mechanisms at the cathode-cell and cell-cell interface to better design dual-function macroporous hollow-fiber cathodes, is critically discussed with insights on how the choice of material is important in facilitating direct electron transfer versus mediated electron transfer.
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Affiliation(s)
- Krishna P Katuri
- Biological and Environmental Sciences and Engineering (BESE) Division, Water Desalination and Reuse Center (WDRC), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Shafeer Kalathil
- Biological and Environmental Sciences and Engineering (BESE) Division, Water Desalination and Reuse Center (WDRC), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Ala'a Ragab
- Biological and Environmental Sciences and Engineering (BESE) Division, Water Desalination and Reuse Center (WDRC), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Bin Bian
- Biological and Environmental Sciences and Engineering (BESE) Division, Water Desalination and Reuse Center (WDRC), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Manal F Alqahtani
- Biological and Environmental Sciences and Engineering (BESE) Division, Water Desalination and Reuse Center (WDRC), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Deepak Pant
- Separation and Conversion Technology, Flemish Institute for Technological Research (VITO), Boeretang 200, Mol, 2400, Belgium
| | - Pascal E Saikaly
- Biological and Environmental Sciences and Engineering (BESE) Division, Water Desalination and Reuse Center (WDRC), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
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Müller E, Pompe T, Freudenberg U, Werner C. Solvent-Assisted Micromolding of Biohybrid Hydrogels to Maintain Human Hematopoietic Stem and Progenitor Cells Ex Vivo. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1703489. [PMID: 28960524 DOI: 10.1002/adma.201703489] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 08/13/2017] [Indexed: 06/07/2023]
Abstract
Array-format cell-culture carriers providing tunable matrix cues are instrumental in current cell biology and bioengineering. A new solvent-assisted demolding approach for the fabrication of microcavity arrays with very small feature sizes down to single-cell level (3 µm) of very soft biohybrid glycosaminoglycan-poly(ethylene glycol) hydrogels (down to a shear modulus of 1 kPa) is reported. It is further shown that independent additional options of localized conjugation of adhesion ligand peptides, presentation of growth factors through complexation to gel-based glycosaminoglycans, and secondary gel deposition for 3D cell embedding enable a versatile customization of the hydrogel microcavity arrays for cell culture studies. As a proof of concept, cell-instructive hydrogel compartment arrays are used to analyze the response of human hematopoietic stem and progenitor cells to defined biomolecular and spatial cues.
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Affiliation(s)
- Eike Müller
- Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials Dresden, Dresden, Germany
| | - Tilo Pompe
- Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials Dresden, Dresden, Germany
- Institute of Biochemistry, Universität Leipzig, Leipzig, Germany
| | - Uwe Freudenberg
- Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials Dresden, Dresden, Germany
| | - Carsten Werner
- Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials Dresden, Dresden, Germany
- Center for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
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Cai S, Pourdeyhimi B, Loboa EG. High-Throughput Fabrication Method for Producing a Silver-Nanoparticles-Doped Nanoclay Polymer Composite with Novel Synergistic Antibacterial Effects at the Material Interface. ACS APPLIED MATERIALS & INTERFACES 2017; 9:21105-21115. [PMID: 28540723 DOI: 10.1021/acsami.7b03793] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this study, we report a high-throughput fabrication method at industrial pilot scale to produce a silver-nanoparticles-doped nanoclay-polylactic acid composite with a novel synergistic antibacterial effect. The obtained nanocomposite has a significantly lower affinity for bacterial adhesion, allowing the loading amount of silver nanoparticles to be tremendously reduced while maintaining satisfactory antibacterial efficacy at the material interface. This is a great advantage for many antibacterial applications in which cost is a consideration. Furthermore, unlike previously reported methods that require additional chemical reduction processes to produce the silver-nanoparticles-doped nanoclay, an in situ preparation method was developed in which silver nanoparticles were created simultaneously during the composite fabrication process by thermal reduction. This is the first report to show that altered material surface submicron structures created with the loading of nanoclay enables the creation of a nanocomposite with significantly lower affinity for bacterial adhesion. This study provides a promising scalable approach to produce antibacterial polymeric products with minimal changes to industry standard equipment, fabrication processes, or raw material input cost.
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Affiliation(s)
- Shaobo Cai
- Department of Materials Science and Engineering, North Carolina State University , 3002 EB 1, Raleigh, North Carolina 27695, United States
| | - Behnam Pourdeyhimi
- The Nonwovens Institute at North Carolina State University , 2401 Research Drive, Raleigh, North Carolina 27695, United States
| | - Elizabeth G Loboa
- College of Engineering at University of Missouri , W1051 Thomas & Nell Lafferre Hall, Columbia, Missouri 65211, United States
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Wo Y, Xu LC, Li Z, Matzger AJ, Meyerhoff ME, Siedlecki CA. Antimicrobial nitric oxide releasing surfaces based on S-nitroso-N-acetylpenicillamine impregnated polymers combined with submicron-textured surface topography. Biomater Sci 2017; 5:1265-1278. [PMID: 28560367 PMCID: PMC6290899 DOI: 10.1039/c7bm00108h] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A novel dual functioning antimicrobial CarboSil 20 80A polymer material that combines physical topographical surface modification and nitric oxide (NO) release is prepared and evaluated for its efficacy in reducing bacterial adhesion in vitro. The new biomaterial is created via a soft lithography two-stage replication process to induce submicron textures on its surface, followed by solvent impregnation with the NO donor, S-nitroso-N-acetylpenicillamine (SNAP), to obtain long-term (up to 38 d) NO release. The NO releasing textured polymer surface is evaluated against four bacteria commonly known to cause infections in hospital settings and the results demonstrate that the combined strategy enables a synergistic effect on reducing the bacterial adhesion of Staphylococcus epidermidis and Pseudomonas aeruginosa bacteria.
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Affiliation(s)
- Yaqi Wo
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, USA
| | - Li-Chong Xu
- Department of Surgery, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA
| | - Zi Li
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, USA
| | - Adam J. Matzger
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, USA
| | - Mark E. Meyerhoff
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, USA
| | - Christopher A. Siedlecki
- Department of Surgery, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA
- Department of Bioengineering, The Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA
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