1
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Luo M, Yang W, Cartwright TN, Higgins JMG, Chen J. Simultaneous Measurement of Single-Cell Mechanics and Cell-to-Materials Adhesion Using Fluidic Force Microscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:620-628. [PMID: 34981921 DOI: 10.1021/acs.langmuir.1c01973] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The connection between cells and their substrate is essential for biological processes such as cell migration. Atomic force microscopy nanoindentation has often been adopted to measure single-cell mechanics. Very recently, fluidic force microscopy has been developed to enable rapid measurements of cell adhesion. However, simultaneous characterization of the cell-to-material adhesion and viscoelastic properties of the same cell is challenging. In this study, we present a new approach to simultaneously determine these properties for single cells, using fluidic force microscopy. For MCF-7 cells grown on tissue-culture-treated polystyrene surfaces, we found that the adhesive force and adhesion energy were correlated for each cell. Well-spread cells tended to have stronger adhesion, which may be due to the greater area of the contact between cellular adhesion receptors and the surface. By contrast, the viscoelastic properties of MCF-7 cells cultured on the same surface appeared to have little dependence on cell shape. This methodology provides an integrated approach to better understand the biophysics of multiple cell types.
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Affiliation(s)
- Ma Luo
- School of Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, U.K
| | - Wenjian Yang
- School of Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, U.K
- Research Center for Intelligent Sensing Systems, Zhijiang Laboratory, Hangzhou 311100, China
| | - Tyrell N Cartwright
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Framlington Place, Newcastle upon Tyne NE2 4HH, U.K
| | - Jonathan M G Higgins
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Framlington Place, Newcastle upon Tyne NE2 4HH, U.K
| | - Jinju Chen
- School of Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, U.K
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2
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Vitus V, Ibrahim F, Wan Kamarul Zaman WS. Modelling of Stem Cells Microenvironment Using Carbon-Based Scaffold for Tissue Engineering Application-A Review. Polymers (Basel) 2021; 13:4058. [PMID: 34883564 PMCID: PMC8658938 DOI: 10.3390/polym13234058] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/15/2021] [Accepted: 11/18/2021] [Indexed: 12/11/2022] Open
Abstract
A scaffold is a crucial biological substitute designed to aid the treatment of damaged tissue caused by trauma and disease. Various scaffolds are developed with different materials, known as biomaterials, and have shown to be a potential tool to facilitate in vitro cell growth, proliferation, and differentiation. Among the materials studied, carbon materials are potential biomaterials that can be used to develop scaffolds for cell growth. Recently, many researchers have attempted to build a scaffold following the origin of the tissue cell by mimicking the pattern of their extracellular matrix (ECM). In addition, extensive studies were performed on the various parameters that could influence cell behaviour. Previous studies have shown that various factors should be considered in scaffold production, including the porosity, pore size, topography, mechanical properties, wettability, and electroconductivity, which are essential in facilitating cellular response on the scaffold. These interferential factors will help determine the appropriate architecture of the carbon-based scaffold, influencing stem cell (SC) response. Hence, this paper reviews the potential of carbon as a biomaterial for scaffold development. This paper also discusses several crucial factors that can influence the feasibility of the carbon-based scaffold architecture in supporting the efficacy and viability of SCs.
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Affiliation(s)
- Vieralynda Vitus
- Department of Biomedical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia; (V.V.); (F.I.)
- Centre for Innovation in Medical Engineering (CIME), Department of Biomedical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Fatimah Ibrahim
- Department of Biomedical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia; (V.V.); (F.I.)
- Centre for Innovation in Medical Engineering (CIME), Department of Biomedical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia
- Centre for Printable Electronics, Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Wan Safwani Wan Kamarul Zaman
- Department of Biomedical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia; (V.V.); (F.I.)
- Centre for Innovation in Medical Engineering (CIME), Department of Biomedical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia
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3
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Groetsch A, Zysset PK, Varga P, Pacureanu A, Peyrin F, Wolfram U. An experimentally informed statistical elasto-plastic mineralised collagen fibre model at the micrometre and nanometre lengthscale. Sci Rep 2021; 11:15539. [PMID: 34330938 PMCID: PMC8324897 DOI: 10.1038/s41598-021-93505-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 06/23/2021] [Indexed: 11/08/2022] Open
Abstract
Bone is an intriguingly complex material. It combines high strength, toughness and lightweight via an elaborate hierarchical structure. This structure results from a biologically driven self-assembly and self-organisation, and leads to different deformation mechanisms along the length scales. Characterising multiscale bone mechanics is fundamental to better understand these mechanisms including changes due to bone-related diseases. It also guides us in the design of new bio-inspired materials. A key-gap in understanding bone's behaviour exists for its fundamental mechanical unit, the mineralised collagen fibre, a composite of organic collagen molecules and inorganic mineral nanocrystals. Here, we report an experimentally informed statistical elasto-plastic model to explain the fibre behaviour including the nanoscale interplay and load transfer with its main mechanical components. We utilise data from synchrotron nanoscale imaging, and combined micropillar compression and synchrotron X-ray scattering to develop the model. We see that a 10-15% micro- and nanomechanical heterogeneity in mechanical properties is essential to promote the ductile microscale behaviour preventing an abrupt overall failure even when individual fibrils have failed. We see that mineral particles take up 45% of strain compared to collagen molecules while interfibrillar shearing seems to enable the ductile post-yield behaviour. Our results suggest that a change in mineralisation and fibril-to-matrix interaction leads to different mechanical properties among mineralised tissues. Our model operates at crystalline-, molecular- and continuum-levels and sheds light on the micro- and nanoscale deformation of fibril-matrix reinforced composites.
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Affiliation(s)
- Alexander Groetsch
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Philippe K Zysset
- ARTORG Centre for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Peter Varga
- AO Research Institute Davos, Davos, Switzerland
| | | | - Françoise Peyrin
- Université de Lyon, CNRS UMR 5220, Inserm U1206, INSA Lyon, UCBL Lyon 1, Creatis, Lyon, France
| | - Uwe Wolfram
- School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
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4
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Wang JK, Çimenoğlu Ç, Cheam NMJ, Hu X, Tay CY. Sustainable aquaculture side-streams derived hybrid biocomposite for bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 126:112104. [PMID: 34082928 DOI: 10.1016/j.msec.2021.112104] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 03/23/2021] [Accepted: 04/08/2021] [Indexed: 02/07/2023]
Abstract
Despite being a rich source of bioactive compounds, the current exploitation of aquatic biomass is insufficient. Majority of the aquaculture industry side-streams are currently used for low-value purposes such as animal feed or composting material, with low economical returns. To maximize resource reuse and minimize waste generation, valorization efforts should be augmented with the aim to produce high-value products. Herein, we present a novel aquaculture wastes-derived multi-scale osteoconductive hybrid biocomposite that is composed of chemically crosslinked American bullfrog (Rana catesbeiana) skin-derived type I tropocollagen nanofibrils (~22.3 nm) network and functionalized with micronized (~1.6 μm) single-phase hydroxyapatite (HA) from discarded snakehead (Channa micropeltes) fish scales. The bioengineered construct is biocompatible, highly porous (>90%), and exhibits excellent osteoconductive properties, as indicated by robust adhesion and proliferation of human fetal osteoblastic 1.19 cell line (hFOB 1.19). Furthermore, increased expression level of osteo-related ALPL and BGLAP mRNA transcripts, as well as enhanced osteocalcin immunoreactivity and increasing Alizarin red S staining coverage on the hybrid biocomposite was observed over 21 days of culture. Collectively, the devised "waste-to-resource" platform represents a sustainable waste valorization strategy that is amendable for advanced bone repair and regeneration applications.
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Affiliation(s)
- Jun Kit Wang
- School of Materials Science and Engineering, Nanyang Technological University Singapore, N4.1, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Çiğdem Çimenoğlu
- School of Materials Science and Engineering, Nanyang Technological University Singapore, N4.1, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Nicole Mein Ji Cheam
- School of Materials Science and Engineering, Nanyang Technological University Singapore, N4.1, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Xiao Hu
- School of Materials Science and Engineering, Nanyang Technological University Singapore, N4.1, 50 Nanyang Avenue, Singapore 639798, Singapore; Environmental Chemistry and Materials Centre, Nanyang Environment & Water Research Institute, 1 CleanTech Loop, CleanTech One, Singapore 637141, Singapore
| | - Chor Yong Tay
- School of Materials Science and Engineering, Nanyang Technological University Singapore, N4.1, 50 Nanyang Avenue, Singapore 639798, Singapore; Environmental Chemistry and Materials Centre, Nanyang Environment & Water Research Institute, 1 CleanTech Loop, CleanTech One, Singapore 637141, Singapore; School of Biological Sciences, Nanyang Technological University Singapore, 60 Nanyang Drive, Singapore 637551, Singapore; Energy Research Institute, Nanyang Technological University Singapore, 50 Nanyang Drive, Singapore 637553, Singapore.
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5
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Vaiani L, Migliorini E, Cavalcanti-Adam EA, Uva AE, Fiorentino M, Gattullo M, Manghisi VM, Boccaccio A. Coarse-grained elastic network modelling: A fast and stable numerical tool to characterize mesenchymal stem cells subjected to AFM nanoindentation measurements. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 121:111860. [PMID: 33579492 DOI: 10.1016/j.msec.2020.111860] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/23/2020] [Accepted: 12/26/2020] [Indexed: 12/11/2022]
Abstract
The knowledge of the mechanical properties is the starting point to study the mechanobiology of mesenchymal stem cells and to understand the relationships linking biophysical stimuli to the cellular differentiation process. In experimental biology, Atomic Force Microscopy (AFM) is a common technique for measuring these mechanical properties. In this paper we present an alternative approach for extracting common mechanical parameters, such as the Young's modulus of cell components, starting from AFM nanoindentation measurements conducted on human mesenchymal stem cells. In a virtual environment, a geometrical model of a stem cell was converted in a highly deformable Coarse-Grained Elastic Network Model (CG-ENM) to reproduce the real AFM experiment and retrieve the related force-indentation curve. An ad-hoc optimization algorithm perturbed the local stiffness values of the springs, subdivided in several functional regions, until the computed force-indentation curve replicated the experimental one. After this curve matching, the extraction of global Young's moduli was performed for different stem cell samples. The algorithm was capable to distinguish the material properties of different subcellular components such as the cell cortex and the cytoskeleton. The numerical results predicted with the elastic network model were then compared to those obtained from hertzian contact theory and Finite Element Method (FEM) for the same case studies, showing an optimal agreement and a highly reduced computational cost. The proposed simulation flow seems to be an accurate, fast and stable method for understanding the mechanical behavior of soft biological materials, even for subcellular levels of detail. Moreover, the elastic network modelling allows shortening the computational times to approximately 33% of the time required by a traditional FEM simulation performed using elements with size comparable to that of springs.
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Affiliation(s)
- L Vaiani
- Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Bari 70126, Italy
| | | | - E A Cavalcanti-Adam
- Max Planck Institute for Medical Research, D-69120 Heidelberg, Germany; Heidelberg University, D-69120 Heidelberg, Germany
| | - A E Uva
- Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Bari 70126, Italy
| | - M Fiorentino
- Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Bari 70126, Italy
| | - M Gattullo
- Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Bari 70126, Italy
| | - V M Manghisi
- Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Bari 70126, Italy
| | - A Boccaccio
- Dipartimento di Meccanica, Matematica e Management, Politecnico di Bari, Bari 70126, Italy.
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6
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Tian Y, Fang Q, Li J. Molecular dynamics simulations for nanoindentation response of nanotwinned FeNiCrCoCu high entropy alloy. NANOTECHNOLOGY 2020; 31:465701. [PMID: 32746442 DOI: 10.1088/1361-6528/ababcd] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Twin boundary (TB) plays an important role on the plastic deformation of high entropy alloy (HEA). The strong effects of TB on the deformation response of HEA are revealed from atomic level based on the defect structure, shear strain and surface morphology, by comparing the nanoindentation behavior of nanotwinned FeNiCrCoCu HEA (nt-HEA) and single-crystal FeNiCrCoCu HEA (single-HEA). The plastic deformation of nt-HEA is mainly dominated by the dislocations slip confined by first twinning layer, the TB migration, the dislocation nucleation at TB and the stacking fault tetrahedron (SFT) formation, while the dislocation loop emission is the main plastic deformation feature of single-HEA. Compared to the case for single-HEA, the nanoindentation induces more dislocations in nt-HEA. The shear strain in nt-HEA mainly distributes in the first twinning layer, due to the obstacle effect of TB. The shear zone is larger in nt-HEA, and the distribution of shear strain on the nt-HEA surface is more symmetric. The nanoindentation generates fewer steps on the nt-HEA surface, and then brings about a relatively smooth surface for nt-HEA. These findings provide an insight into the TB effect on the nanoindentation response of FeNiCrCoCu HEA, and develop the application of nanotwinned HEA systems.
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Affiliation(s)
- Yuanyuan Tian
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, People's Republic of China
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7
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Finite Element Analysis of the Nanomechanics of Hard Coatings on a Soft Polymer Substrate by a Spherical Indenter. ADVANCES IN POLYMER TECHNOLOGY 2020. [DOI: 10.1155/2020/6903196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Composite has been widely used in various fields due to its advanced performance. To reveal the relation between the mechanical properties of the composite and that of each individual component, finite element analysis (FEA) has usually been adopted. In this study, in order to predict the mechanical properties of hard coating on a soft polymer, the response of this coating system during nanoindentation was modelled. Various models, such as a viscoelastic model and fitting model, were adopted to analyse the indentation response of this coating system. By varying the substrate properties (i.e., Young’s modulus, viscoelasticity, and Poisson’s ratio), Young’s modulus, energy loss, and the viscoelastic model of the coating system were analysed, and how the mechanical properties of the substrate will affect the indentation response of the coating system was discussed.
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8
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Piñeiro-Ramil M, Sanjurjo-Rodríguez C, Castro-Viñuelas R, Rodríguez-Fernández S, Fuentes-Boquete I, Blanco F, Díaz-Prado S. Usefulness of Mesenchymal Cell Lines for Bone and Cartilage Regeneration Research. Int J Mol Sci 2019; 20:E6286. [PMID: 31847077 PMCID: PMC6940884 DOI: 10.3390/ijms20246286] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 12/10/2019] [Accepted: 12/11/2019] [Indexed: 12/18/2022] Open
Abstract
The unavailability of sufficient numbers of human primary cells is a major roadblock for in vitro repair of bone and/or cartilage, and for performing disease modelling experiments. Immortalized mesenchymal stromal cells (iMSCs) may be employed as a research tool for avoiding these problems. The purpose of this review was to revise the available literature on the characteristics of the iMSC lines, paying special attention to the maintenance of the phenotype of the primary cells from which they were derived, and whether they are effectively useful for in vitro disease modeling and cell therapy purposes. This review was performed by searching on Web of Science, Scopus, and PubMed databases from 1 January 2015 to 30 September 2019. The keywords used were ALL = (mesenchymal AND ("cell line" OR immortal*) AND (cartilage OR chondrogenesis OR bone OR osteogenesis) AND human). Only original research studies in which a human iMSC line was employed for osteogenesis or chondrogenesis experiments were included. After describing the success of the immortalization protocol, we focused on the iMSCs maintenance of the parental phenotype and multipotency. According to the literature revised, it seems that the maintenance of these characteristics is not guaranteed by immortalization, and that careful selection and validation of clones with particular characteristics is necessary for taking advantage of the full potential of iMSC to be employed in bone and cartilage-related research.
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Affiliation(s)
- M. Piñeiro-Ramil
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Departamento de Fisioterapia, Medicina e Ciencias Biomédicas, Facultade de Ciencias da Saúde, Universidade da Coruña (UDC), Campus de A Coruña, 15006 A Coruña, Spain; (C.S.-R.); (R.C.-V.); (S.R.-F.)
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), Universidade da Coruña (UDC), 15006 A Coruña, Spain
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Centro de Investigacións Científicas Avanzadas (CICA), Agrupación Estratéxica entre o CICA e o Instituto de Investigación Biomédica de A Coruña (INIBIC), Universidade da Coruña (UDC), 15071 A Coruña, Spain
| | - C. Sanjurjo-Rodríguez
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Departamento de Fisioterapia, Medicina e Ciencias Biomédicas, Facultade de Ciencias da Saúde, Universidade da Coruña (UDC), Campus de A Coruña, 15006 A Coruña, Spain; (C.S.-R.); (R.C.-V.); (S.R.-F.)
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), Universidade da Coruña (UDC), 15006 A Coruña, Spain
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Centro de Investigacións Científicas Avanzadas (CICA), Agrupación Estratéxica entre o CICA e o Instituto de Investigación Biomédica de A Coruña (INIBIC), Universidade da Coruña (UDC), 15071 A Coruña, Spain
- Centro de Investigación Biomédica en Red (CIBER) de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain;
| | - R. Castro-Viñuelas
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Departamento de Fisioterapia, Medicina e Ciencias Biomédicas, Facultade de Ciencias da Saúde, Universidade da Coruña (UDC), Campus de A Coruña, 15006 A Coruña, Spain; (C.S.-R.); (R.C.-V.); (S.R.-F.)
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), Universidade da Coruña (UDC), 15006 A Coruña, Spain
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Centro de Investigacións Científicas Avanzadas (CICA), Agrupación Estratéxica entre o CICA e o Instituto de Investigación Biomédica de A Coruña (INIBIC), Universidade da Coruña (UDC), 15071 A Coruña, Spain
| | - S. Rodríguez-Fernández
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Departamento de Fisioterapia, Medicina e Ciencias Biomédicas, Facultade de Ciencias da Saúde, Universidade da Coruña (UDC), Campus de A Coruña, 15006 A Coruña, Spain; (C.S.-R.); (R.C.-V.); (S.R.-F.)
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), Universidade da Coruña (UDC), 15006 A Coruña, Spain
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Centro de Investigacións Científicas Avanzadas (CICA), Agrupación Estratéxica entre o CICA e o Instituto de Investigación Biomédica de A Coruña (INIBIC), Universidade da Coruña (UDC), 15071 A Coruña, Spain
| | - I.M. Fuentes-Boquete
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Departamento de Fisioterapia, Medicina e Ciencias Biomédicas, Facultade de Ciencias da Saúde, Universidade da Coruña (UDC), Campus de A Coruña, 15006 A Coruña, Spain; (C.S.-R.); (R.C.-V.); (S.R.-F.)
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), Universidade da Coruña (UDC), 15006 A Coruña, Spain
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Centro de Investigacións Científicas Avanzadas (CICA), Agrupación Estratéxica entre o CICA e o Instituto de Investigación Biomédica de A Coruña (INIBIC), Universidade da Coruña (UDC), 15071 A Coruña, Spain
- Centro de Investigación Biomédica en Red (CIBER) de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain;
| | - F.J. Blanco
- Centro de Investigación Biomédica en Red (CIBER) de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain;
- Grupo de Investigación en Reumatología (GIR), Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), 15006 A Coruña, Spain
| | - S.M. Díaz-Prado
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Departamento de Fisioterapia, Medicina e Ciencias Biomédicas, Facultade de Ciencias da Saúde, Universidade da Coruña (UDC), Campus de A Coruña, 15006 A Coruña, Spain; (C.S.-R.); (R.C.-V.); (S.R.-F.)
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario A Coruña (CHUAC), Servizo Galego de Saúde (SERGAS), Universidade da Coruña (UDC), 15006 A Coruña, Spain
- Grupo de Investigación en Terapia Celular e Medicina Rexenerativa, Centro de Investigacións Científicas Avanzadas (CICA), Agrupación Estratéxica entre o CICA e o Instituto de Investigación Biomédica de A Coruña (INIBIC), Universidade da Coruña (UDC), 15071 A Coruña, Spain
- Centro de Investigación Biomédica en Red (CIBER) de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain;
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9
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Keskin D, Mergel O, van der Mei HC, Busscher HJ, van Rijn P. Inhibiting Bacterial Adhesion by Mechanically Modulated Microgel Coatings. Biomacromolecules 2019; 20:243-253. [PMID: 30512925 PMCID: PMC6335679 DOI: 10.1021/acs.biomac.8b01378] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/02/2018] [Indexed: 02/06/2023]
Abstract
Bacterial infection is a severe problem especially when associated with biomedical applications. This study effectively demonstrates that poly- N-isopropylmethacrylamide based microgel coatings prevent bacterial adhesion. The coating preparation via a spraying approach proved to be simple and both cost and time efficient creating a homogeneous dense microgel monolayer. In particular, the influence of cross-linking density, microgel size, and coating thickness was investigated on the initial bacterial adhesion. Adhesion of Staphylococcus aureus ATCC 12600 was imaged using a parallel plate flow chamber setup, which gave insights in the number of the total bacteria adhering per unit area onto the surface and the initial bacterial deposition rates. All microgel coatings successfully yielded more than 98% reduction in bacterial adhesion. Bacterial adhesion depends both on the cross-linking density/stiffness of the microgels and on the thickness of the microgel coating. Bacterial adhesion decreased when a lower cross-linking density was used at equal coating thickness and at equal cross-linking density with a thicker microgel coating. The highest reduction in the number of bacterial adhesion was achieved with the microgel that produced the thickest coating ( h = 602 nm) and had the lowest cross-linking density. The results provided in this paper indicate that microgel coatings serve as an interesting and easy applicable approach and that it can be fine-tuned by manipulating the microgel layer thickness and stiffness.
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Affiliation(s)
- Damla Keskin
- University
of Groningen, University Medical Center Groningen, Department of Biomedical
Engineering (FB40), W.J. Kolff Institute
for Biomedical Engineering and Materials Science (FB41), Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Olga Mergel
- University
of Groningen, University Medical Center Groningen, Department of Biomedical
Engineering (FB40), W.J. Kolff Institute
for Biomedical Engineering and Materials Science (FB41), Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Henny C. van der Mei
- University
of Groningen, University Medical Center Groningen, Department of Biomedical
Engineering (FB40), W.J. Kolff Institute
for Biomedical Engineering and Materials Science (FB41), Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Henk J. Busscher
- University
of Groningen, University Medical Center Groningen, Department of Biomedical
Engineering (FB40), W.J. Kolff Institute
for Biomedical Engineering and Materials Science (FB41), Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Patrick van Rijn
- University
of Groningen, University Medical Center Groningen, Department of Biomedical
Engineering (FB40), W.J. Kolff Institute
for Biomedical Engineering and Materials Science (FB41), Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
- University of
Groningen, Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Qian L, Zhao H. Nanoindentation of Soft Biological Materials. MICROMACHINES 2018; 9:E654. [PMID: 30544918 PMCID: PMC6316095 DOI: 10.3390/mi9120654] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 11/27/2018] [Accepted: 12/05/2018] [Indexed: 01/01/2023]
Abstract
Nanoindentation techniques, with high spatial resolution and force sensitivity, have recently been moved into the center of the spotlight for measuring the mechanical properties of biomaterials, especially bridging the scales from the molecular via the cellular and tissue all the way to the organ level, whereas characterizing soft biomaterials, especially down to biomolecules, is fraught with more pitfalls compared with the hard biomaterials. In this review we detail the constitutive behavior of soft biomaterials under nanoindentation (including AFM) and present the characteristics of experimental aspects in detail, such as the adaption of instrumentation and indentation response of soft biomaterials. We further show some applications, and discuss the challenges and perspectives related to nanoindentation of soft biomaterials, a technique that can pinpoint the mechanical properties of soft biomaterials for the scale-span is far-reaching for understanding biomechanics and mechanobiology.
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Affiliation(s)
- Long Qian
- School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130025, China.
| | - Hongwei Zhao
- School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130025, China.
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Modelling the Nanomechanical Responses of Biofilms Grown on the Indenter Probe. Processes (Basel) 2018. [DOI: 10.3390/pr6070084] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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