1
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Welle A, Rabel K, Schwotzer M, Kohal RJ, Steinberg T, Altmann B. Identification of Zirconia Particle Uptake in Human Osteoblasts by ToF-SIMS Analysis and Particle-Size Effects on Cell Metabolism. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4272. [PMID: 36500895 PMCID: PMC9736599 DOI: 10.3390/nano12234272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
As the use of zirconia-based nano-ceramics is rising in dentistry, the examination of possible biological effects caused by released nanoparticles on oral target tissues, such as bone, is gaining importance. The aim of this investigation was to identify a possible internalization of differently sized zirconia nanoparticles (ZrNP) into human osteoblasts applying Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS), and to examine whether ZrNP exposure affected the metabolic activity of the cells. Since ToF-SIMS has a low probing depth (about 5 nm), visualizing the ZrNP required the controlled erosion of the sample by oxygen bombardment. This procedure removed organic matter, uncovering the internalized ZrNP and leaving the hard particles practically unaffected. It was demonstrated that osteoblasts internalized ZrNP within 24 h in a size-dependent manner. Regarding the cellular metabolic activity, metabolization of alamarBlue by osteoblasts revealed a size- and time-dependent unfavorable effect of ZrNP, with the smallest ZrNP exerting the most pronounced effect. These findings point to different uptake efficiencies of the differently sized ZrNP by human osteoblasts. Furthermore, it was proven that ToF-SIMS is a powerful technique for the detection of zirconia-based nano/microparticles that can be applied for the cell-based validation of clinically relevant materials at the nano/micro scale.
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Affiliation(s)
- Alexander Welle
- Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany
- Institute of Functional Interfaces, Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany
| | - Kerstin Rabel
- Department of Prosthetic Dentistry, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, 79106 Freiburg im Breisgau, Germany
| | - Matthias Schwotzer
- Institute of Functional Interfaces, Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany
| | - Ralf Joachim Kohal
- Department of Prosthetic Dentistry, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, 79106 Freiburg im Breisgau, Germany
| | - Thorsten Steinberg
- Department of Oral Biotechnology, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, 79106 Freiburg im Breisgau, Germany
| | - Brigitte Altmann
- Department of Prosthetic Dentistry, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, 79106 Freiburg im Breisgau, Germany
- G.E.R.N. Research Center for Tissue Replacement, Regeneration & Neogenesis, Department of Prosthetic Dentistry, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, 79085 Freiburg im Breisgau, Germany
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2
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Yang Q, Qi H, Yang X, Luo M, Huang J. Simulation study on the adsorption of polymer chains on checkerboard‐patterned surfaces. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Qing‐Hui Yang
- Department of Physics Hangzhou Dianzi University Hangzhou China
| | - Hang‐Kai Qi
- Department of Physics Zhejiang University Hangzhou China
| | - Xiao Yang
- Department of Physics Taizhou University Taizhou China
| | - Meng‐Bo Luo
- Department of Physics Zhejiang University Hangzhou China
| | - Jian‐Hua Huang
- Department of Chemistry Zhejiang Sci‐Tech University Hangzhou China
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3
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Nanoscale Topographical Effects on the Adsorption Behavior of Bone Morphogenetic Protein-2 on Graphite. Int J Mol Sci 2022; 23:ijms23052432. [PMID: 35269575 PMCID: PMC8910650 DOI: 10.3390/ijms23052432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 02/19/2022] [Accepted: 02/20/2022] [Indexed: 12/10/2022] Open
Abstract
The interaction between bone morphogenetic protein-2 (BMP-2) and the surface of biomaterials is essential for the restoration of bone and cartilage tissue, inducing cellular differentiation and proliferation. The properties of the surface, including topology features, regulate the conformation and bioactivity of the protein. In this research, we investigated the influence of nanopatterned surfaces on the interaction of a homodimer BMP-2 with graphite material by combining molecular dynamics (MD) and steered molecular dynamics (SMD) simulations. The graphite substrates were patterned as flat, linear grating, square, and circular profiles in combination with BMP-2 conformation in the side-on configuration. Ramachandran plots for the wrist and knuckle epitopes indicated no steric hindrances and provided binding sites to type I and type II receptors. Results showed two optimal patterns that increased protein adsorption of the lower monomer while preserving the secondary structure and leaving the upper monomer free to interact with the cells. Charged residues arginine and lysine and polar residues histidine and tyrosine were the main residues responsible for the strong interaction with the graphite surface. This research provides new molecular-level insights to further understand the mechanisms underlying protein adsorption on nanoscale patterned substrates.
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Bhatt M, Shende P. Surface patterning techniques for proteins on nano- and micro-systems: a modulated aspect in hierarchical structures. J Mater Chem B 2022; 10:1176-1195. [PMID: 35119060 DOI: 10.1039/d1tb02455h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The surface patterning of protein using fabrication or the external functionalization of structures demonstrates various applications in the biomedical field for bioengineering, biosensing and antifouling. This review article offers an outline of the existing advances in protein patterning technology with a special emphasis on the current physical and physicochemical methods, including stencil patterning, trap- and droplet-based microfluidics, and chemical modification of surfaces via photolithography, microcontact printing and scanning probe nanolithography. Different approaches are applied for the biological studies of recent trends for single-protein patterning technology, such as robotic printing, stencil printing and colloidal lithography, wherein the concepts of physical confinement, electrostatic and capillary forces, as well as dielectrophoretics, are summarised to understand the design approaches. Photochemical alterations with diazirine, nitrobenzyl and aryl azide functional groups for the implication of modified substrates, such as self-assembled monolayers functionalized with amino silanes, organosilanes and alkanethiols on gold surfaces, as well as topographical effects of patterning techniques for protein functionalization and orientation, are discussed. Analytical methods for the evaluation of protein functionality are also mentioned. Regarding their selectivity, protein pattering methods will be readily used to fabricate modified surfaces and target-specific delivery systems for the transportation of macromolecules such as streptavidin, and albumin. Future applications of patterning techniques include high-throughput screening, the evaluation of intracellular interactions, accurate screening and personalized treatments.
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Affiliation(s)
- Maitri Bhatt
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM'S NMIMS, V. L. Mehta Road, Vile Parle (W), Mumbai, India.
| | - Pravin Shende
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM'S NMIMS, V. L. Mehta Road, Vile Parle (W), Mumbai, India.
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5
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An Atomistic Investigation of Adsorption of Bone Morphogenetic Protein-2 on Gold with Nanoscale Topographies. SURFACES 2022. [DOI: 10.3390/surfaces5010010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Nanoscale surface topographies mediated with biochemical cues influence the differentiation of stem cells into different lineages. This research focuses on the adsorption behavior of bone morphogenetic protein (BMP-2) on nanopatterned gold substrates, which can aid in the differentiation of bone and cartilage tissue constructs. The gold substrates were patterned as flat, pillar, linear grating, and linear-grating deep based, and the BMP-2 conformation in end-on configuration was studied over 20 ns. The linear grating deep substrate pattern had the highest adsorption energy of around 125 kJ/mol and maintained its radius of gyration of 18.5 Å, indicating a stable adsorption behavior. Secondary structures including α-helix and β-sheet displayed no denaturation, and thus, the bioavailability of the BMP-2, for the deep linear-grating pattern. Ramachandran plots for the wrist and knuckle epitopes indicated no steric hindrances and provided binding sites to type I and type II receptors. The deep linear-grating substrate had the highest number of contacts (88 atoms) within 5 Å of the gold substrate, indicating its preferred nanoscale pattern choice among the substrates considered. This research provides new insights into the atomistic adsorption of BMP-2 on nanoscale topographies of a gold substrate, with applications in biomedical implants and regenerative medicine.
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Javorskis T, Rakickas T, Jankūnaitė A, Talaikis M, Niaura G, Ulčinas A, Orentas E. Meso-scale surface patterning of self-assembled monolayers with water. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Fontelo R, Soares da Costa D, Reis RL, Novoa-Carballal R, Pashkuleva I. Antithrombotic and hemocompatible properties of nanostructured coatings assembled from block copolymers. J Colloid Interface Sci 2021; 608:1608-1618. [PMID: 34742077 DOI: 10.1016/j.jcis.2021.10.076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 10/08/2021] [Accepted: 10/13/2021] [Indexed: 01/03/2023]
Abstract
We describe the antithrombotic properties of nanopatterned coatings created by self-assembly of poly(styrene-block-2-vinylpyridine) (PS-b-P2VP) with different molecular weights. By changing the assembly conditions, we obtained nanopatterns that differ by their morphology (size and shape of the nanopattern) and chemistry. The surface exposition of P2VP block allowed quaternization, i.e. introduction of positive surface charge and following electrostatic deposition of heparin. Proteins (albumin and fibrinogen) adsorption, platelet adhesion and activation, cytocompatibility, and reendothelization capacity of the coatings were assessed and discussed in a function of the nanopattern morphology and chemistry. We found that quaternization results in excellent antithrombotic and hemocompatible properties comparable to heparinization by hampering the fibrinogen adhesion and platelet activation. In the case of quaternization, this effect depends on the size of the polymer blocks, while all heparinized patterns had similar performance showing that heparin surface coverage of 40 % is enough to improve substantially the hemocompatibility.
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Affiliation(s)
- R Fontelo
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - D Soares da Costa
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - R L Reis
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - R Novoa-Carballal
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal.
| | - I Pashkuleva
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal.
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8
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Sequential binary protein patterning on surface domains of thermo-responsive polymer blends cast by horizontal-dipping. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 99:1477-1484. [DOI: 10.1016/j.msec.2019.02.087] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 02/12/2019] [Accepted: 02/21/2019] [Indexed: 12/31/2022]
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9
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Zhang X, Gong C, Akakuru OU, Su Z, Wu A, Wei G. The design and biomedical applications of self-assembled two-dimensional organic biomaterials. Chem Soc Rev 2019; 48:5564-5595. [DOI: 10.1039/c8cs01003j] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Self-assembling 2D organic biomaterials exhibit versatile abilities for structural and functional tailoring, as well as high potential for biomedical applications.
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Affiliation(s)
- Xiaoyuan Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- China
- Faculty of Physics and Astronomy
- University of Jena
| | - Coucong Gong
- Faculty of Production Engineering
- University of Bremen
- Bremen
- Germany
| | - Ozioma Udochukwu Akakuru
- Cixi Institute of Biomedical Engineering
- CAS Key Laboratory of Magnetic Materials and Devices, & Key Laboratory of Additive Manufacturing Materials of Zhejiang Province
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Zhiqiang Su
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- China
| | - Aiguo Wu
- Cixi Institute of Biomedical Engineering
- CAS Key Laboratory of Magnetic Materials and Devices, & Key Laboratory of Additive Manufacturing Materials of Zhejiang Province
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Gang Wei
- Faculty of Production Engineering
- University of Bremen
- Bremen
- Germany
- Cixi Institute of Biomedical Engineering
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10
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Juste-Dolz A, Avella-Oliver M, Puchades R, Maquieira A. Indirect Microcontact Printing to Create Functional Patterns of Physisorbed Antibodies. SENSORS (BASEL, SWITZERLAND) 2018; 18:E3163. [PMID: 30235856 PMCID: PMC6164925 DOI: 10.3390/s18093163] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 09/14/2018] [Accepted: 09/17/2018] [Indexed: 12/31/2022]
Abstract
Microcontact printing (µCP) is a practical and versatile approach to create nanostructured patterns of biomolecular probes, but it involves conformational changes on the patterned bioreceptors that often lead to a loss on the biological activity of the resulting structures. Herein we introduce indirect µCP to create functional patterns of bioreceptors on solid substrates. This is a simple strategy that relies on physisorbing biomolecular probes of interest in the nanostructured gaps that result after patterning backfilling agents by standard µCP. This study presents the approach, assesses bovine serum albumin as backfilling agent for indirect µCP on different materials, reports the limitations of standard µCP on the functionality of patterned antibodies, and demonstrates the capabilities of indirect µCP to solve this issue. Bioreceptors were herein structured as diffractive gratings and used to measure biorecognition events in label-free conditions. Besides, as a preliminary approach towards sensing biomarkers, this work also reports the implementation of indirect µCP in an immunoassay to detect human immunoglobulin E.
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Affiliation(s)
- Augusto Juste-Dolz
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, 46022 Valencia, Spain.
| | - Miquel Avella-Oliver
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, 46022 Valencia, Spain.
| | - Rosa Puchades
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, 46022 Valencia, Spain.
- Departamento de Química, Universitat Politècnica de València, 46022 Valencia, Spain.
| | - Angel Maquieira
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, 46022 Valencia, Spain.
- Departamento de Química, Universitat Politècnica de València, 46022 Valencia, Spain.
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11
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Kosobrodova E, Gan WJ, Kondyurin A, Thorn P, Bilek MMM. Improved Multiprotein Microcontact Printing on Plasma Immersion Ion Implanted Polystyrene. ACS APPLIED MATERIALS & INTERFACES 2018; 10:227-237. [PMID: 29211435 DOI: 10.1021/acsami.7b15545] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Multiprotein micropatterning allows the creation of complex, controlled microenvironments for single cells that can be used for the study of the localized effects of various proteins and signals on cell survival, development, and functions. To enable analysis of cell interactions with microprinted proteins, the multiprotein micropattern must have low cross-contamination and high long-term stability in a cell culture medium. To achieve this, we employed an optimized plasma ion immersion implantation (PIII) treatment to provide polystyrene (PS) with the ability to covalently immobilize proteins on contact while retaining sufficient transparency and suitable surface properties for contact printing and retention of protein activity. The quality and long-term stability of the micropatterns on untreated and PIII treated PS were compared with those on glass using confocal microscopy. The protein micropattern on the PIII treated PS was more uniform and had a significantly higher contrast that was not affected by long-term incubation in cell culture media because the proteins were covalently bonded to PIII treated PS. The immunostaining of mouse pancreatic β cells interacting with E-cadherin and fibronectin striped surfaces showed phosphorylated paxillin concentrated on cell edges over the fibronectin stripes. This indicates that multiprotein micropatterns printed on PIII treated PS can be used for high-resolution studies of local influence on cell morphology and protein production.
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Affiliation(s)
- E Kosobrodova
- The School of Physics, University of Sydney , Sydney, New South Wales 2006, Australia
| | - W J Gan
- Department of Physiology, Sydney Medical School, Charles Perkins Centre, University of Sydney , Sydney, New South Wales 2006, Australia
| | - A Kondyurin
- The School of Physics, University of Sydney , Sydney, New South Wales 2006, Australia
| | - P Thorn
- Department of Physiology, Sydney Medical School, Charles Perkins Centre, University of Sydney , Sydney, New South Wales 2006, Australia
| | - M M M Bilek
- The School of Physics, University of Sydney , Sydney, New South Wales 2006, Australia
- Department of Physiology, Sydney Medical School, Charles Perkins Centre, University of Sydney , Sydney, New South Wales 2006, Australia
- The School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney , Sydney, New South Wales 2006, Australia
- The Australian Institute of Nanoscale Science and Technology, University of Sydney , Sydney, New South Wales 2006, Australia
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12
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Alvarado RE, Nguyen HT, Pepin-Donat B, Lombard C, Roupioz Y, Leroy L. Optically Assisted Surface Functionalization for Protein Arraying in Aqueous Media. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10511-10516. [PMID: 28899097 DOI: 10.1021/acs.langmuir.7b02965] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Protein surface patterning is employed in a broad spectrum of applications ranging from protein microarray analysis to 2D cell organization. However, limitations arise because of the highly sensitive nature of proteins requiring careful handling to ensure their structural and functional integrity during the grafting process. Here, we describe a patterning protocol that keeps proteins in an aqueous environment during their immobilization, avoiding the loss of their biological activity. The procedure is based on the UV-mediated removal of polyethylene glycol self-assembled monolayers in a transparent microfluidic chamber, giving access to micrometric motifs of predefined geometries. Afterward, modified proteins can be grafted on the photopatterned domains. We also studied the influence of reactive oxygen species for a better understanding of the chemical mechanism involved in this process. Finally, as a proof of concept, a protein microarray was created with this process using cell-capturing antibodies to immobilize human blood cells, confirming the functionality of the arrayed proteins.
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Affiliation(s)
- Ricardo E Alvarado
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES , F-38000 Grenoble, France
| | - Hoang T Nguyen
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES , F-38000 Grenoble, France
| | | | - Christian Lombard
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES , F-38000 Grenoble, France
| | - Yoann Roupioz
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES , F-38000 Grenoble, France
| | - Loïc Leroy
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES , F-38000 Grenoble, France
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13
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Sevilla P, Gil J, Aparicio C. Relevant Properties for Immobilizing Short Peptides on Biosurfaces. Ing Rech Biomed 2017. [DOI: 10.1016/j.irbm.2017.06.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Abstract
Bone diseases/injuries have been driving an urgent quest for bone substitutes for bone regeneration. Nanoscaled materials with bone-mimicking characteristics may create suitable microenvironments to guide effective bone regeneration. In this review, the natural hierarchical architecture of bone and its regeneration mechanisms are elucidated. Recent progress in the development of nanomaterials which can promote bone regeneration through bone-healing mimicry (e.g., compositional, nanocrystal formation, structural, and growth factor-related mimicking) is summarized. The nanoeffects of nanomaterials on the regulation of bone-related biological functions are highlighted. How to prepare nanomaterials with combinative bone-biomimicry features according to the bone healing process is prospected in order to achieve rapid bone regeneration in situ.
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Affiliation(s)
- Yulin Li
- Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China.
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15
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Sekine T, Asatyas S, Sato C, Morita S, Tanaka M, Hayashi T. Surface force and vibrational spectroscopic analyses of interfacial water molecules in the vicinity of methoxy-tri(ethylene glycol)-terminated monolayers: mechanisms underlying the effect of lateral packing density on bioinertness. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 28:1231-1243. [DOI: 10.1080/09205063.2017.1303120] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Taito Sekine
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo, Japan
| | - Syifa Asatyas
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo, Japan
| | - Chikako Sato
- Department of Biochemical Engineering, Yamagata University, Yamagata, Japan
| | - Shigeaki Morita
- Department of Engineering Science, Osaka Electro-Communication University, Osaka, Japan
| | - Masaru Tanaka
- Department of Biochemical Engineering, Yamagata University, Yamagata, Japan
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka, Japan
| | - Tomohiro Hayashi
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo, Japan
- Surface and Interface Science Laboratory, RIKEN, Saitama, Japan
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16
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Bøggild T, Runager K, Sutherland DS. Nanopattern Gradients for Cell Studies Fabricated Using Hole-Mask Colloidal Lithography. ACS APPLIED MATERIALS & INTERFACES 2016; 8:14975-14979. [PMID: 27245371 DOI: 10.1021/acsami.5b08315] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Culturing cells on gradient nanopatterns provides a useful tool to explore cellular adhesion to mimics of the extracellular matrix or screen for cellular responses to nanopatterns. A method is presented to fabricate complex gradient protein patterns based on hole-mask colloidal lithography, which can generate nanopatterns in multiple materials and of multiple shapes. Gradients of gold structures were functionalized to form gradients of protein nanopatterns of different shapes (bars, dot pairs, and rings), where a key parameter was systematically varied in each gradient. Cells were grown on vitronectin nanopatterns, showing differential adhesion (spread area/focal adhesion size) along the gradients.
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Affiliation(s)
- Thea Bøggild
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University , Aarhus, Denmark
| | - Kasper Runager
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University , Aarhus, Denmark
| | - Duncan S Sutherland
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University , Aarhus, Denmark
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17
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Coyle BL, Baneyx F. Direct and reversible immobilization and microcontact printing of functional proteins on glass using a genetically appended silica-binding tag. Chem Commun (Camb) 2016; 52:7001-4. [PMID: 27157272 DOI: 10.1039/c6cc02660e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Fusion of disulfide-constrained or linear versions of the Car9 dodecapeptide to model fluorescent proteins support their on-contact and oriented immobilization onto unmodified glass. Bound proteins can be released and the surface regenerated by incubation with l-lysine. This noncovalent chemistry enables rapid and reversibe microcontact printing of tagged proteins and speeds up the production of bicontinuous protein patterns.
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Affiliation(s)
- Brandon L Coyle
- Department of Chemical Engineering, University of Washington, Box 351750, Seattle, WA, USA
| | - François Baneyx
- Department of Chemical Engineering, University of Washington, Box 351750, Seattle, WA, USA
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18
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Amin YYI, Runager K, Simoes F, Celiz A, Taresco V, Rossi R, Enghild JJ, Abildtrup LA, Kraft DCE, Sutherland DS, Alexander MR, Foss M, Ogaki R. Combinatorial Biomolecular Nanopatterning for High-Throughput Screening of Stem-Cell Behavior. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:1472-1476. [PMID: 26650176 DOI: 10.1002/adma.201504995] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2015] [Revised: 10/31/2015] [Indexed: 06/05/2023]
Abstract
A novel combinatorial biomolecular nanopatterning method is reported, in which multiple biomolecular ligands can be patterned in multiple nanoscale dimensions on a single surface. The applicability of the combinatorial platform toward cell-biology applications is demonstrated by screening the adhesion behavior of a population of human dental pulp stem cell (hDPSC) on 64 combinations of nanopatterned extracellular matrix (ECM) proteins in parallel.
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Affiliation(s)
- Yacoub Y I Amin
- Interdisciplinary Nanoscience Center (iNANO), Faculty of Science and Technology, Aarhus University, 8000, Aarhus C, Denmark
| | - Kasper Runager
- Interdisciplinary Nanoscience Center (iNANO), Faculty of Science and Technology, Aarhus University, 8000, Aarhus C, Denmark
| | - Fabio Simoes
- Laboratory of Biophysics and Surface Analysis, School of Pharmacy, University of Nottingham, NG7 2RD, Nottingham, UK
| | - Adam Celiz
- Laboratory of Biophysics and Surface Analysis, School of Pharmacy, University of Nottingham, NG7 2RD, Nottingham, UK
| | - Vincenzo Taresco
- Laboratory of Biophysics and Surface Analysis, School of Pharmacy, University of Nottingham, NG7 2RD, Nottingham, UK
| | - Roberto Rossi
- Department of Chemical Sciences, University of Padova, 35122, Padova, Italy
| | - Jan J Enghild
- Interdisciplinary Nanoscience Center (iNANO), Faculty of Science and Technology, Aarhus University, 8000, Aarhus C, Denmark
| | - Lisbeth A Abildtrup
- Department of Dentistry, Faculty of Health, Aarhus University, 8000, Aarhus C, Denmark
| | - David C E Kraft
- Department of Dentistry, Faculty of Health, Aarhus University, 8000, Aarhus C, Denmark
| | - Duncan S Sutherland
- Interdisciplinary Nanoscience Center (iNANO), Faculty of Science and Technology, Aarhus University, 8000, Aarhus C, Denmark
| | - Morgan R Alexander
- Laboratory of Biophysics and Surface Analysis, School of Pharmacy, University of Nottingham, NG7 2RD, Nottingham, UK
| | - Morten Foss
- Interdisciplinary Nanoscience Center (iNANO), Faculty of Science and Technology, Aarhus University, 8000, Aarhus C, Denmark
| | - Ryosuke Ogaki
- Interdisciplinary Nanoscience Center (iNANO), Faculty of Science and Technology, Aarhus University, 8000, Aarhus C, Denmark
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19
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Sato S, Ikemi M, Kikuchi T, Matsumura S, Shiba K, Fujita M. Bridging Adhesion of a Protein onto an Inorganic Surface Using Self-Assembled Dual-Functionalized Spheres. J Am Chem Soc 2015; 137:12890-6. [PMID: 26190770 DOI: 10.1021/jacs.5b06184] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
For the bridging adhesion of different classes of materials in their intact functional states, the adhesion of biomolecules onto inorganic surfaces is a necessity. A new molecular design strategy for bridging adhesion was demonstrated by the introduction of two independent recognition groups on the periphery of spherical complexes self-assembled from metal ions (M) and bidentate ligands (L). These dual-functionalized M12L24 spheres were quantitatively synthesized in one step from two ligands, bearing either a biotin for streptavidin recognition or a titania-binding aptamer, and Pd(II) ions. The selective recognition of titania surfaces was achieved by ligands with hexapeptide aptamers (Arg-Lys-Leu-Pro-Asp-Ala: minTBP-1), whose fixation ability was enhanced by the accumulation effect on the surface of the M12L24 spheres. These well-defined spherical structures can be specifically tailored to promote interactions with both titania and streptavidin simultaneously without detrimentally affecting either recognition motif. The irreversible immobilization of the spheres onto titania was revealed quantitatively by quartz crystal microbalance measurements, and the adhesion of streptavidin to the titania surface mediated by the biotin surrounding the spheres was visually demonstrated by lithographic patterning experiments.
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Affiliation(s)
- Sota Sato
- Department of Applied Chemistry, School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Masatoshi Ikemi
- Department of Applied Chemistry, School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takashi Kikuchi
- Department of Applied Chemistry, School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Sachiko Matsumura
- Division of Protein Engineering, Cancer Institute, Japanese Foundation for Cancer Research , 3-8-31 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - Kiyotaka Shiba
- Division of Protein Engineering, Cancer Institute, Japanese Foundation for Cancer Research , 3-8-31 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - Makoto Fujita
- Department of Applied Chemistry, School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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20
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Ni L, Chemtob A, Croutxé-Barghorn C, Dietlin C, Brendlé J, Rigolet S, Vidal L, Dieterlen A, Maalouf E, Haeberlé O. Photoinduced self-assembly of carboxylic acid-terminated lamellar silsesquioxane: highly functional films for attaching and patterning amino-based ligands. RSC Adv 2015. [DOI: 10.1039/c5ra04300j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
A facile procedure for immobilizing and photopatterning amino ligands onto a multilayer cross-linked COOH-functionalized organosilica film is described. Key features include high functionality, robustness and no restriction on the substrate.
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21
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Sterner O, Giazzon M, Zürcher S, Tosatti S, Liley M, Spencer ND. Delineating fibronectin bioadhesive micropatterns by photochemical immobilization of polystyrene and poly(vinylpyrrolidone). ACS APPLIED MATERIALS & INTERFACES 2014; 6:18683-18692. [PMID: 25253530 DOI: 10.1021/am5042093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Bioadhesive micropatterns, capable of laterally confining cells to a 2D lattice, have proven effective in simulating the in vivo tissue environment. They reveal fundamental aspects of the role of adhesion in cell mechanics, proliferation, and differentiation. Here we present an approach based on photochemistry for the fabrication of synthetic polymer micropatterns. Perfluorophenyl azide (PFPA), upon deep-UV exposure, forms a reactive nitrene capable of covalently linking to a molecule that is in close proximity. PFPA has been grafted onto a backbone of poly(allyl amine), which readily forms a self-assembled monolayer on silicon wafers or glass. A film of polystyrene was applied by spin-coating, and by laterally confining the UV exposure through a chromium-on-quartz photomask, monolayers of polymers could be immobilized in circular microdomains. Poly(vinylpyrrolidone) (PVP) was attached to the background to form a barrier to nonspecific protein adsorption and cell adhesion. Micropatterns were characterized with high-lateral-resolution time-of-flight secondary ion mass spectrometry (TOF-SIMS), which confirmed the formation of polystyrene domains within a PVP background. Fluorescence-microscopy adsorption assays with rhodamine-labeled bovine serum albumin demonstrated the nonfouling efficiency of PVP and, combined with TOF-SIMS, allowed for a comprehensive characterization of the pattern geometry. The applicability of the micropatterned platform in single-cell assays was tested by culturing two cell types, WM 239 melanoma cells and SaOs-2 osteoblasts, on micropatterned glass, either with or without backfilling of the patterns with fibronectin. It was demonstrated that the platform was efficient in confining cells to the fibronectin-backfilled micropatterns for at least 48 h. PVP is thus proposed as a viable, highly stable alternative to poly(ethylene glycol) for nonfouling applications. Due to the versatility of the nitrene-insertion reaction, the platform could be extended to other polymer pairs or proteins and the surface chemistry adapted to specific applications.
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Affiliation(s)
- Olof Sterner
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich , Vladimir-Prelog-Weg 5, CH-8093, Zürich, Switzerland
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22
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Hui JZ, Al Zaki A, Cheng Z, Popik V, Zhang H, Luning Prak ET, Tsourkas A. Facile method for the site-specific, covalent attachment of full-length IgG onto nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:3354-63. [PMID: 24729432 PMCID: PMC4142076 DOI: 10.1002/smll.201303629] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 03/20/2014] [Indexed: 05/18/2023]
Abstract
Antibodies, most commonly IgGs, have been widely used as targeting ligands in research and therapeutic applications due to their wide array of targets, high specificity and proven efficacy. Many of these applications require antibodies to be conjugated onto surfaces (e.g. nanoparticles and microplates); however, most conventional bioconjugation techniques exhibit low crosslinking efficiencies, reduced functionality due to non-site-specific labeling and random surface orientation, and/or require protein engineering (e.g. cysteine handles), which can be technically challenging. To overcome these limitations, we have recombinantly expressed Protein Z, which binds the Fc region of IgG, with an UV active non-natural amino acid benzoylphenyalanine (BPA) within its binding domain. Upon exposure to long wavelength UV light, the BPA is activated and forms a covalent link between the Protein Z and the bound Fc region of IgG. This technology was combined with expressed protein ligation (EPL), which allowed for the introduction of a fluorophore and click chemistry-compatible azide group onto the C-terminus of Protein Z during the recombinant protein purification step. This enabled the crosslinked-Protein Z-IgG complexes to be efficiently and site-specifically attached to aza-dibenzocyclooctyne-modified nanoparticles, via copper-free click chemistry.
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Affiliation(s)
- James Zhe Hui
- Department of Bioengineering, University of Pennsylvania, 210 S. 33 Street, 240 Skirkanich Hall, Philadelphia, PA 19104, USA
| | - Ajlan Al Zaki
- Department of Bioengineering, University of Pennsylvania, 210 S. 33 Street, 240 Skirkanich Hall, Philadelphia, PA 19104, USA
| | - Zhiliang Cheng
- Department of Bioengineering, University of Pennsylvania, 210 S. 33 Street, 240 Skirkanich Hall, Philadelphia, PA 19104, USA
| | - Vladimir Popik
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA
| | - Hongtao Zhang
- Department of Pathology and Lab Medicine, University of Pennsylvania, PA 19104, USA
| | - Eline T. Luning Prak
- Department of Pathology and Lab Medicine, University of Pennsylvania, PA 19104, USA
| | - Andrew Tsourkas
- Department of Bioengineering, University of Pennsylvania, 210 S. 33 Street, 240 Skirkanich Hall, Philadelphia, PA 19104, USA
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23
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Rodda AE, Meagher L, Nisbet DR, Forsythe JS. Specific control of cell–material interactions: Targeting cell receptors using ligand-functionalized polymer substrates. Prog Polym Sci 2014. [DOI: 10.1016/j.progpolymsci.2013.11.006] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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24
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Ogaki R, Foss M. Biofunctional surface patterns retaining activity after exposure to whole blood. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:7014-7023. [PMID: 24866477 DOI: 10.1021/la5007378] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Biofunctional surface patterns capable of resisting nonspecific bioadsorption while retaining bioactivity play crucial roles in the advancement of life science and biomedical technologies. The currently available functional surface coatings suffer from a high level of nonspecific surface adsorption of proteins under biologically challenging conditions, leading to a loss of activity in functional moieties over time. In this study, the recently discovered facile method of temperature-induced polyelectrolyte (TIP) grafting has been used to graft two biofunctional variants (biotin and nitrilotriacetic acid, NTA) of poly(l-lysine)-grafted PEG (PLL-g-PEG) onto a titanium surface. A significant increase in the polymer adsorption was observed from the TIP-grafted surfaces assembled at 80 °C, compared to the polymer surfaces assembled at ambient temperature (20 °C). These functional PLL-g-PEG surfaces were subsequently incubated in whole human blood continuously for up to 7 days, and the TIP-grafted surfaces achieved close-to-zero nonspecific protein adsorption, as confirmed by ultrasensitive time-of-flight secondary ion mass spectrometry (ToF-SIMS). To test the maintenance of the bioactivity of the biotin and NTA moieties, submicrometer-scale mono- (biotin) and bi- (biotin/NTA) functional surface chemical patterns were fabricated via two-step TIP grafting using colloidal lithography (CL), preincubated in blood for up to 7 days and sequentially exposed to streptavidin and Ni(2+)-histidine-tagged calmodulin. The fluorescence microscopy studies revealed that the PLL-g-PEG-NTA and -biotin surfaces grafted from the TIP method were still capable of recognizing the corresponding affinity proteins for up to 1 and 7 days of preincubation in blood, respectively. These results highlight the bioresistant robustness realized by the facile TIP grafting method, which in turn preserves the activities of biofunctional moieties over a prolonged period in whole blood.
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Affiliation(s)
- Ryosuke Ogaki
- Interdisciplinary Nanoscience Center (iNANO), Faculty of Science and Technology, Aarhus University , Aarhus, Denmark
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25
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Zhang X, Schulze R, Zhang P, Lüdecke C, Zhang X, Su Z, Jandt KD. How different mesophases affect the interactive crystallisation of a block co-oligomer. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.02.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Schulze R, Arras MML, Helbing C, Hölzer S, Schubert US, Keller TF, Jandt KD. How the Calorimetric Properties of a Crystalline Copolymer Correlate to Its Surface Nanostructures. Macromolecules 2014. [DOI: 10.1021/ma401984t] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robert Schulze
- Chair
of Materials Science (CMS), Otto Schott Institute of Materials Research,
Faculty of Physics and Astronomy, Friedrich Schiller University Jena, Löbdergraben 32, 07743 Jena, Germany
| | - Matthias M. L. Arras
- Chair
of Materials Science (CMS), Otto Schott Institute of Materials Research,
Faculty of Physics and Astronomy, Friedrich Schiller University Jena, Löbdergraben 32, 07743 Jena, Germany
| | - Christian Helbing
- Chair
of Materials Science (CMS), Otto Schott Institute of Materials Research,
Faculty of Physics and Astronomy, Friedrich Schiller University Jena, Löbdergraben 32, 07743 Jena, Germany
| | - Stefan Hölzer
- Laboratory
of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany
| | - Ulrich S. Schubert
- Laboratory
of Organic Chemistry and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Thomas F. Keller
- Chair
of Materials Science (CMS), Otto Schott Institute of Materials Research,
Faculty of Physics and Astronomy, Friedrich Schiller University Jena, Löbdergraben 32, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Klaus D. Jandt
- Chair
of Materials Science (CMS), Otto Schott Institute of Materials Research,
Faculty of Physics and Astronomy, Friedrich Schiller University Jena, Löbdergraben 32, 07743 Jena, Germany
- Jena
Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
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27
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Affiliation(s)
- Jenny Malmström
- Polymer Electronics Research Centre; School of Chemical Sciences; University of Auckland; Auckland 1142 New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology; Victoria University of Wellington; P.O. Box 600 Wellington 6140 New Zealand
| | - Jadranka Travas-Sejdic
- Polymer Electronics Research Centre; School of Chemical Sciences; University of Auckland; Auckland 1142 New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology; Victoria University of Wellington; P.O. Box 600 Wellington 6140 New Zealand
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28
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Lundström I. From a Laboratory Exercise for Students to a Pioneering Biosensing Technology. PLASMONICS (NORWELL, MASS.) 2014; 9:741-751. [PMID: 25177230 PMCID: PMC4145188 DOI: 10.1007/s11468-013-9654-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Accepted: 11/25/2013] [Indexed: 05/24/2023]
Abstract
Surface plasmon resonance (SPR) for biosensing was demonstrated 30 years ago. In the present contribution, its general background is described together with the necessary developments both in instrumentation and surface chemistry, leading to the final so-called BIAcore technology. The description is naturally colored by my personal opinion of the developments. SPR for the elucidation of organic mono- and multilayers introduced at the end of the 1970s formed the basis for the first biosensing demonstration of SPR in the beginning of the 1980s. It is pointed out how the need of an up-to-date laboratory exercise for the undergraduate students and the multidisciplinary environment at the Laboratory of Applied Physics at Linköping University led to this demonstration. The initial experiments are touched upon and the further developments at Pharmacia, which led to the BIAcore technology, are described in some details. Some of the present activities in Linköping related to optical biosensing with ubiquitous instrumentation are also described, including SPR detection with a computer screen and a web camera and most recently with a cellular phone.
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Affiliation(s)
- Ingemar Lundström
- Biosensors and Bioelectronics Centre, Department of Physics, Chemistry and Biology, Linköping University, 581 83 Linköping, Sweden
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29
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Rostgaard KR, Frederiksen RS, Liu YCC, Berthing T, Madsen MH, Holm J, Nygård J, Martinez KL. Vertical nanowire arrays as a versatile platform for protein detection and analysis. NANOSCALE 2013; 5:10226-35. [PMID: 24062006 DOI: 10.1039/c3nr03113f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Protein microarrays are valuable tools for protein assays. Reducing spot sizes from micro- to nano-scale facilitates miniaturization of platforms and consequently decreased material consumption, but faces inherent challenges in the reduction of fluorescent signals and compatibility with complex solutions. Here we show that vertical arrays of nanowires (NWs) can overcome several bottlenecks of using nanoarrays for extraction and analysis of proteins. The high aspect ratio of the NWs results in a large surface area available for protein immobilization and renders passivation of the surface between the NWs unnecessary. Fluorescence detection of proteins allows quantitative measurements and spatial resolution, enabling us to track individual NWs through several analytical steps, thereby allowing multiplexed detection of different proteins immobilized on different regions of the NW array. We use NW arrays for on-chip extraction, detection and functional analysis of proteins on a nano-scale platform that holds great promise for performing protein analysis on minute amounts of material. The demonstration made here on highly ordered arrays of indium arsenide (InAs) NWs is generic and can be extended to many high aspect ratio nanostructures.
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Affiliation(s)
- Katrine R Rostgaard
- Bio-Nanotechnology and Nanomedicine Laboratory, Department of Chemistry & Nano-Science Center, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark.
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30
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Rahma H, Buffeteau T, Belin C, Le Bourdon G, Degueil M, Bennetau B, Vellutini L, Heuzé K. Resolving the chemical nature of nanodesigned silica surface obtained via a bottom-up approach. ACS APPLIED MATERIALS & INTERFACES 2013; 5:6843-6849. [PMID: 23855987 DOI: 10.1021/am402071t] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The covalent grafting on silica surfaces of a functional dendritic organosilane coupling agent inserted, in a long alkyl chain monolayer, is described. In this paper, we show that depending on experimental parameters, particularly the solvent, it is possible to obtain a nanodesigned surface via a bottom-up approach. Thus, we succeed in the formation of both homogeneous dense monolayer and a heterogeneous dense monolayer, the latter being characterized by a nanosized volcano-type pattern (4-6 nm of height, 100 nm of width, and around 3 volcanos/μm(2)) randomly distributed over the surface. The dendritic attribute of the grafted silylated coupling agent affords enough anchoring sites to immobilize covalently functional gold nanoparticles (GNPs), coated with amino PEG polymer to resolve the chemical nature of the surfaces and especially the volcano type nanopattern structures of the heterogeneous monolayer. Thus, the versatile surface chemistry developed herein is particularly challenging as the nanodesign is straightforward achieved in a bottom-up approach without any specific lithography device.
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Affiliation(s)
- Hakim Rahma
- Université de Bordeaux, ISM UMR 5255, F-33400 Talence, France
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31
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Lee D, Yang S. On-chip parylene-C microstencil for simple-to-use patterning of proteins and cells on polydimethylsiloxane. ACS APPLIED MATERIALS & INTERFACES 2013; 5:2658-2668. [PMID: 23477911 DOI: 10.1021/am4001166] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Polydimethylsiloxane (PDMS) is widely used as a substrate in miniaturized devices, given its suitability for execution of biological and chemical assays. Here, we present a patterning approach for PDMS, which uses an on-chip Parylene-C microstencil to pattern proteins and cells. To implement the on-chip Parylene-C microstencil, we applied SiOx-like nanoparticle layers using atmospheric-pressure plasma-enhanced chemical vapor deposition (AP-PECVD) of tetraethyl orthosilicate (TEOS) mixed with oxygen. The complete removal of Parylene-C from PDMS following application of SiOx-like nanoparticle layers was demonstrated by various surface characterization analysis, including optical transparency, surface morphology, chemical composition, and peel-off force. Furthermore, the effects of the number of AP-PECVD treatments were investigated. Our approach overcomes the tendency of Parylene-C to peel off incompletely from PDMS, which has limited its use with PDMS to date. The on-chip Parylene-C microstencil approach that is based on this Parylene-C peel-off process on PDMS can pattern proteins with 2-μm resolution and cells at single-cell resolution with a vacancy ratio as small as 10%. This provides superior user-friendliness and a greater degree of geometrical freedom than previously described approaches that require meticulous care in handling of stencil. Thus, this patterning method could be applied in various research fields to pattern proteins or cells on the flexible PDMS substrate.
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Affiliation(s)
- Donghee Lee
- Department of Medical System Engineering, School of Mechatronics, Gwangju Institute of Science and Technology (GIST), 123 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea
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32
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Li C, Glidle A, Yuan X, Hu Z, Pulleine E, Cooper J, Yang W, Yin H. Creating “Living” Polymer Surfaces to Pattern Biomolecules and Cells on Common Plastics. Biomacromolecules 2013; 14:1278-86. [DOI: 10.1021/bm4000597] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Chunyan Li
- State Key Laboratory of Chemical
Resource Engineering, Key Laboratory of Carbon Fiber and Functional
Polymers, Ministry of Education, College of Materials
Science and Engineering, Beijing University of Chemical Technology, Beijing, China 100029
- College of Science and Engineering,
Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow, United
Kingdom
| | - Andrew Glidle
- College of Science and Engineering,
Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow, United
Kingdom
| | - Xiaofei Yuan
- College of Science and Engineering,
Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow, United
Kingdom
| | - Zhixiong Hu
- College of Science and Engineering,
Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow, United
Kingdom
- Division
of Medical
and Biological Measurements, National Institute of Metrology, Beijing, China 100013
| | - Ellie Pulleine
- College of Science and Engineering,
Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow, United
Kingdom
| | - Jon Cooper
- College of Science and Engineering,
Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow, United
Kingdom
| | - Wantai Yang
- State Key Laboratory of Chemical
Resource Engineering, Key Laboratory of Carbon Fiber and Functional
Polymers, Ministry of Education, College of Materials
Science and Engineering, Beijing University of Chemical Technology, Beijing, China 100029
| | - Huabing Yin
- College of Science and Engineering,
Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow, United
Kingdom
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33
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Suriyanarayanan S, Lee HH, Liedberg B, Aastrup T, Nicholls IA. Protein-resistant hyperbranched polyethyleneimine brush surfaces. J Colloid Interface Sci 2013; 396:307-15. [DOI: 10.1016/j.jcis.2012.12.076] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 12/26/2012] [Accepted: 12/28/2012] [Indexed: 12/17/2022]
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34
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Leszczak V, Smith BS, Popat KC. Hemocompatibility of polymeric nanostructured surfaces. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 24:1529-48. [PMID: 23848447 DOI: 10.1080/09205063.2013.777228] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Tissue integration is an important property when inducing transplant tolerance, however, the hemocompatibility of the biomaterial surface also plays an important role in the ultimate success of the implant. Therefore, in order to induce transplant tolerance, it is critical to understand the interaction of blood components with the material surfaces. In this study, we have investigated the adsorption of key blood serum proteins, in vitro adhesion and activation of platelets and clotting kinetics of whole blood on flat polycaprolactone (PCL) surfaces, nanowire (NW) surfaces and nanofiber (NF) surfaces. Previous studies have shown that polymeric nanostructured surfaces improve cell adhesion, proliferation and viability; however it is unclear how these polymeric nanostructured surfaces interact with the blood and its components. Protein adsorption results indicate that while there were no significant differences in total albumin (ALB) adsorption on PCL, NW and NF surfaces, NW surfaces had higher total fibrinogen (FIB) and immunoglobulin-G (IgG) adsorption compared to NF and PCL surfaces. In contrast, NF surfaces had higher surface FIB and IgG adsorption compared to PCL and NW surfaces. Platelet adhesion and viability studies show more adhesion and clustering of platelets on the NF surfaces as compared to PCL and NW surfaces. Platelet activation studies reveal that NW surfaces have the highest percentage of unactivated platelets, whereas NF surfaces have the highest percentage of fully activated platelets. Whole blood clotting results indicate that NW surfaces maintain an increased amount of free hemoglobin during the clotting process compared to PCL and NF surface, indicating less clotting and slower rate of clotting on their surfaces.
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Affiliation(s)
- Victoria Leszczak
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO, 80523, USA
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Addressable self-immobilization of lactate dehydrogenase across multiple length scales. Biotechnol J 2013; 8:262-72. [DOI: 10.1002/biot.201100502] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 12/20/2012] [Accepted: 01/08/2013] [Indexed: 11/07/2022]
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Holt SA, Le Brun AP, Nelson ARJ, Lakey JH. In situ study of the impact of acidic and neutral deposition pH on alkane phosphate film formation and stability on TiO2. RSC Adv 2013. [DOI: 10.1039/c2ra22643j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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Penon O, Novo S, Durán S, Ibañez E, Nogués C, Samitier J, Duch M, Plaza JA, Pérez-García L. Efficient Biofunctionalization of Polysilicon Barcodes for Adhesion to the Zona Pellucida of Mouse Embryos. Bioconjug Chem 2012. [DOI: 10.1021/bc3004205] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Oriol Penon
- Department of Pharmacology
and Therapeutical Chemistry and Institute of Nanoscience and Nanotechnology
UB (IN2UB), Universitat de Barcelona, Avda. Joan XXIII s/n, 08028 Barcelona, Spain
| | - Sergi Novo
- Department of Cellular Biology,
Physiology and Immunology, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Sara Durán
- Institute of Microelectronics of Barcelona, IMB-CNM (CSIC), Campus UAB, 08193 Bellaterra,
Barcelona, Spain
| | - Elena Ibañez
- Department of Cellular Biology,
Physiology and Immunology, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Carme Nogués
- Department of Cellular Biology,
Physiology and Immunology, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Josep Samitier
- Institute for Bioengineering of Catalonia (IBEC), Baldiri Reixac 10-12, 08028 Barcelona,
Spain
- Department
of Electronics, Universitat de Barcelona, c/Martí
i Franquès 1, 08028 Barcelona, Spain
| | - Marta Duch
- Institute of Microelectronics of Barcelona, IMB-CNM (CSIC), Campus UAB, 08193 Bellaterra,
Barcelona, Spain
| | - José Antonio Plaza
- Institute of Microelectronics of Barcelona, IMB-CNM (CSIC), Campus UAB, 08193 Bellaterra,
Barcelona, Spain
| | - Lluïsa Pérez-García
- Department of Pharmacology
and Therapeutical Chemistry and Institute of Nanoscience and Nanotechnology
UB (IN2UB), Universitat de Barcelona, Avda. Joan XXIII s/n, 08028 Barcelona, Spain
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Shigeta K, He Y, Sutanto E, Kang S, Le AP, Nuzzo RG, Alleyne AG, Ferreira PM, Lu Y, Rogers JA. Functional Protein Microarrays by Electrohydrodynamic Jet Printing. Anal Chem 2012; 84:10012-8. [DOI: 10.1021/ac302463p] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazuyo Shigeta
- Department
of Materials Science and Engineering, ‡Department of Mechanical Science
and Engineering, and §Department of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois
61801, United States
| | - Ying He
- Department
of Materials Science and Engineering, ‡Department of Mechanical Science
and Engineering, and §Department of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois
61801, United States
| | - Erick Sutanto
- Department
of Materials Science and Engineering, ‡Department of Mechanical Science
and Engineering, and §Department of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois
61801, United States
| | - Somi Kang
- Department
of Materials Science and Engineering, ‡Department of Mechanical Science
and Engineering, and §Department of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois
61801, United States
| | - An-Phong Le
- Department
of Materials Science and Engineering, ‡Department of Mechanical Science
and Engineering, and §Department of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois
61801, United States
| | - Ralph G. Nuzzo
- Department
of Materials Science and Engineering, ‡Department of Mechanical Science
and Engineering, and §Department of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois
61801, United States
| | - Andrew G. Alleyne
- Department
of Materials Science and Engineering, ‡Department of Mechanical Science
and Engineering, and §Department of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois
61801, United States
| | - Placid M. Ferreira
- Department
of Materials Science and Engineering, ‡Department of Mechanical Science
and Engineering, and §Department of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois
61801, United States
| | - Yi Lu
- Department
of Materials Science and Engineering, ‡Department of Mechanical Science
and Engineering, and §Department of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois
61801, United States
| | - John A. Rogers
- Department
of Materials Science and Engineering, ‡Department of Mechanical Science
and Engineering, and §Department of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois
61801, United States
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Kolind K, Leong KW, Besenbacher F, Foss M. Guidance of stem cell fate on 2D patterned surfaces. Biomaterials 2012; 33:6626-33. [DOI: 10.1016/j.biomaterials.2012.05.070] [Citation(s) in RCA: 135] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Accepted: 05/30/2012] [Indexed: 01/01/2023]
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Fatarella E, Ciabatti I, Cortez J. Activation of polymeric materials towards enzymatic postgrafting and cross-linking. Enzyme Microb Technol 2012; 51:252-7. [DOI: 10.1016/j.enzmictec.2012.07.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Revised: 06/01/2012] [Accepted: 07/12/2012] [Indexed: 10/28/2022]
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Brouette N, Fragneto G, Cousin F, Moulin M, Haertlein M, Sferrazza M. A neutron reflection study of adsorbed deuterated myoglobin layers on hydrophobic surfaces. J Colloid Interface Sci 2012; 390:114-20. [PMID: 23079044 DOI: 10.1016/j.jcis.2012.09.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 09/14/2012] [Accepted: 09/15/2012] [Indexed: 11/16/2022]
Abstract
The structure of adsorbed globular protein layers on hydrophobic surfaces is elucidated in detail by combining the use of a fully deuterated protein, myoglobin, and the neutron reflectivity technique. The hydrophobic surfaces consist of grafted self-assembled monolayer of octadecyltrichlorosilane (OTS) and polystyrene (PS) layer on silicon substrates. Different protein concentrations ranging from 1mg/ml to 0.01 mg/ml are used. On the OTS surface and for low protein concentration, the adsorbed protein layer consists of a dense layer of thickness around 13Å indicating that proteins are denaturated when adsorbed on the hydrophobic interface - myoglobin being a globular protein with an average diameter of about 40Å. At high protein concentration, an additional layer is observed on the top of this first denaturated layer. The thickness of this layer corresponds roughly to the dimensions of the myoglobin suggesting that additional proteins in their bulk conformation are adsorbed on the top. In the case of PS, the protein is significantly less flattened at the interface, PS being a less hydrophobic surface.
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Affiliation(s)
- Nicolas Brouette
- Département de Physique, Faculté des Sciences, Université Libre de Bruxelles, Bruxelles, Belgium
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Huang Q, Lin L, Yang Y, Hu R, Vogler EA, Lin C. Role of trapped air in the formation of cell-and-protein micropatterns on superhydrophobic/superhydrophilic microtemplated surfaces. Biomaterials 2012; 33:8213-20. [PMID: 22917736 DOI: 10.1016/j.biomaterials.2012.08.017] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2012] [Accepted: 08/09/2012] [Indexed: 01/27/2023]
Abstract
Air trapped within the interstices of TiO(2) nanotube surfaces bearing superhydrophobic/superhydrophilic microtemplated domains controls formation of protein micropatterns but not cell micropatterns. Protein binding from either bovine-serum albumin (BSA) or fetal-bovine serum (FBS) solutions to superhydrophobic domains is blocked in the presence of trapped air, leading to clear protein binding contrast between superhydrophilic and superhydrophobic domains. Protein binds to superhydrophobic domains when air is displaced by sonication, leading to more protein binding to superhydrophobic domains than to superhydrophilic, with concomitantly blurred protein binding contrast. The overall contrast obtained in formation of cell (hFOB1.19, MG63, and HeLa) micropatterns depends on the cell type and protein composition of the fluid phase. All cell types preferentially attach to superhydrophilic domains from each fluid phase tested (FBS, BSA, and basal media containing no protein). All cell types do not attach to superhydrophobic domains from FBS solutions, with-or-without trapped air, creating a visually-obvious cell attachment pattern. However, cells attached to superhydrophobic domains from basal media suspensions, with-or-without trapped air, creating a blurred cell attachment pattern. Cell attachment from BSA-containing solutions gave mixed results depending on cell type. Thus, trapped air does not necessarily block cell attachment as has been suggested in the literature. Rather, cell attachment is controlled by interfacial tensions between cells, surfaces, and fluid phases in a manner that can be understood in terms of the Dupré work-of-adhesion formulation. Cell attachment patterns developed within the initial attachment phase persist for up to two days of continuous culture but overgrow thereafter, with-or-without trapped air, showing that trapped air does not block cell overgrowth over time of continuous culture.
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Affiliation(s)
- Qiaoling Huang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
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Zheng C, Wang J, Pang Y, Wang J, Li W, Ge Z, Huang Y. High-throughput immunoassay through in-channel microfluidic patterning. LAB ON A CHIP 2012; 12:2487-90. [PMID: 22549364 DOI: 10.1039/c2lc40145b] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
We have developed an integrated microfluidic immunoassay chip for high-throughput sandwich immunoassay tests. The chip creates an array of reactive patterns through mechanical protection by actuating monolithically embedded button valves. We have demonstrated that this chip can achieve highly sensitive immunoassay tests within an hour, and requires only microliter samples.
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Affiliation(s)
- Chunhong Zheng
- College of Engineering, Peking University, Beijing 100871, China
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Ogaki R, Bennetsen DT, Bald I, Foss M. Dopamine-assisted rapid fabrication of nanoscale protein arrays by colloidal lithography. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:8594-8599. [PMID: 22639967 DOI: 10.1021/la301441t] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The development of cost-effective methodologies for the precise nanometer-scale positioning of biomolecules permits the low-cost production of various biofunctional devices for a range of biomedical and nanotechnological applications. By combining colloidal lithography and the mussel-inspired multifunctional polydopamine coating, we present a novel parallel benchtop method that allows rapid nanoscale patterning of proteins without the need for electrically powered equipment in the fabrication process. The PDA-immobilized binary nanopattern consisting of BSA surrounded by PLL-g-PEG is fabricated over a large area, and the integrity of the pattern is confirmed using AFM and FM.
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Affiliation(s)
- Ryosuke Ogaki
- Interdisciplinary Nanoscience Center, Faculty of Science, Aarhus University, Ny Munkegade, 8000 Aarhus C, Denmark.
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Size matters: problems and advantages associated with highly miniaturized sensors. SENSORS 2012; 12:3018-36. [PMID: 22736990 PMCID: PMC3376590 DOI: 10.3390/s120303018] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 02/23/2012] [Accepted: 02/23/2012] [Indexed: 01/15/2023]
Abstract
There is no doubt that the recent advances in nanotechnology have made it possible to realize a great variety of new sensors with signal transduction mechanisms utilizing physical phenomena at the nanoscale. Some examples are conductivity measurements in nanowires, deflection of cantilevers and spectroscopy of plasmonic nanoparticles. The fact that these techniques are based on the special properties of nanostructural entities provides for extreme sensor miniaturization since a single structural unit often can be used as transducer. This review discusses the advantages and problems with such small sensors, with focus on biosensing applications and label-free real-time analysis of liquid samples. Many aspects of sensor design are considered, such as thermodynamic and diffusion aspects on binding kinetics as well as multiplexing and noise issues. Still, all issues discussed are generic in the sense that the conclusions apply to practically all types of surface sensitive techniques. As a counterweight to the current research trend, it is argued that in many real world applications, better performance is achieved if the active sensor is larger than that in typical nanosensors. Although there are certain specific sensing applications where nanoscale transducers are necessary, it is argued herein that this represents a relatively rare situation. Instead, it is suggested that sensing on the microscale often offers a good compromise between utilizing some possible advantages of miniaturization while avoiding the complications. This means that ensemble measurements on multiple nanoscale sensors are preferable instead of utilizing a single transducer entity.
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Bruns M, Barth C, Brüner P, Engin S, Grehl T, Howell C, Koelsch P, Mack P, Nagel P, Trouillet V, Wedlich D, White RG. Structure and chemical composition of mixed benzylguanine- and methoxy-terminated self-assembled monolayers for immobilization of biomolecules. SURF INTERFACE ANAL 2012. [DOI: 10.1002/sia.4876] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- M. Bruns
- Karlsruhe Institute of Technology (KIT), Institute for Applied Materials (IAM-WPT) and Karlsruhe Nano Micro Facility (KNMF); Hermann-von-Helmholtz-Platz 1; D-76344; Eggenstein-Leopoldshafen; Germany
| | | | - P. Brüner
- ION-TOF GmbH; Heisenbergstr; 15, 48149; Münster; Germany
| | - S. Engin
- Karlsruhe Institute of Technology (KIT), Zoological Institute 2; Fritz-Haber-Weg 4; D-76131; Karlsruhe; Germany
| | - T. Grehl
- ION-TOF GmbH; Heisenbergstr; 15, 48149; Münster; Germany
| | | | | | - P. Mack
- ThermoFisher Scientific, Unit 24; The Birches Industrial Estate; East Grinstead; RH 19 1UB; UK
| | - P. Nagel
- Karlsruhe Institute of Technology (KIT), Institute for Solid-State Physics (IFP); Hermann-von-Helmholtz-Platz 1; D-76344; Eggenstein-Leopoldshafen; Germany
| | - V. Trouillet
- Karlsruhe Institute of Technology (KIT), Institute for Applied Materials (IAM-WPT) and Karlsruhe Nano Micro Facility (KNMF); Hermann-von-Helmholtz-Platz 1; D-76344; Eggenstein-Leopoldshafen; Germany
| | - D. Wedlich
- Karlsruhe Institute of Technology (KIT), Zoological Institute 2; Fritz-Haber-Weg 4; D-76131; Karlsruhe; Germany
| | - R. G. White
- ThermoFisher Scientific, Unit 24; The Birches Industrial Estate; East Grinstead; RH 19 1UB; UK
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Zuyderhoff EM, Dupont-Gillain CC. Nano-organized collagen layers obtained by adsorption on phase-separated polymer thin films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:2007-2014. [PMID: 22149629 DOI: 10.1021/la203842q] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The organization of adsorbed type I collagen layers was examined on a series of polystyrene (PS)/poly(methyl methacrylate) (PMMA) heterogeneous surfaces obtained by phase separation in thin films. These thin films were prepared by spin coating from solutions in either dioxane or toluene of PS and PMMA in different proportions. Their morphology was unraveled combining the information coming from X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and water contact angle measurements. Substrates with PMMA inclusions in a PS matrix and, conversely, substrates with PS inclusions in a PMMA matrix were prepared, the inclusions being either under the form of pits or islands, with diameters in the submicrometer range. The organization of collagen layers obtained by adsorption on these surfaces was then investigated. On pure PMMA, the layer was quite smooth with assemblies of a few collagen molecules, while bigger assemblies were found on pure PS. On the heterogeneous surfaces, it appeared clearly that the diameter and length of collagen assemblies was modulated by the size and surface coverage of the PS domains. If the PS domains, either surrounding or surrounded by the PMMA phase, were above 600 nm wide, a heterogeneous distribution of collagen was found, in agreement with observations made on pure polymers. Otherwise, fibrils could be formed, that were longer compared to those observed on pure polymers. Additionally, the surface nitrogen content determined by XPS, which is linked to the protein adsorbed amount, increased roughly linearly with the PS surface fraction, whatever the size of PS domains, suggesting that adsorbed collagen amount on heterogeneous PS/PMMA surfaces is a combination of that observed on the pure polymers. This work thus shows that PS/PMMA surface heterogeneities can govern collagen organization. This opens the way to a better control of collagen supramolecular organization at interfaces, which could in turn allow cell-material interactions to be tailored.
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Affiliation(s)
- Emilienne M Zuyderhoff
- Université Catholique de Louvain (UCL), Institute of Condensed Matter and Nanosciences (IMCN), Division Bio & Soft Matter (BSMA), Croix du Sud 1(L7.04.01), B-1348 Louvain-la-Neuve, Belgium
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Hayashi T, Tanaka Y, Koide Y, Tanaka M, Hara M. Mechanism underlying bioinertness of self-assembled monolayers of oligo(ethyleneglycol)-terminated alkanethiols on gold: protein adsorption, platelet adhesion, and surface forces. Phys Chem Chem Phys 2012; 14:10196-206. [DOI: 10.1039/c2cp41236e] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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