1
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Arrabito G, Gulli D, Alfano C, Pignataro B. "Writing biochips": high-resolution droplet-to-droplet manufacturing of analytical platforms. Analyst 2022; 147:1294-1312. [PMID: 35275148 DOI: 10.1039/d1an02295d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The development of high-resolution molecular printing allows the engineering of analytical platforms enabling applications at the interface between chemistry and biology, i.e. in biosensing, electronics, single-cell biology, and point-of-care diagnostics. Their successful implementation stems from the combination of large area printing at resolutions from sub-100 nm up to macroscale, whilst controlling the composition and volume of the ink, and reconfiguring the deposition features in due course. Similar to handwriting pens, the engineering of continuous writing systems tackles the issue of the tedious ink replenishment between different printing steps. To this aim, this review article provides an unprecedented analysis of the latest continuous printing methods for bioanalytical chemistry, focusing on ink deposition systems based on specific sets of technologies that have been developed to this aim, namely nanofountain probes, microcantilever spotting, capillary-based polymer pens and continuous 3D printing. Each approach will be discussed revealing the most important applications in the fields of biosensors, lab-on-chips and diagnostics.
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Affiliation(s)
- Giuseppe Arrabito
- Department of Physics and Chemistry (DiFC) Emilio Segrè, University of Palermo, Building 17, V.le delle Scienze, Palermo 90128, Italy.
| | - Daniele Gulli
- Department of Physics and Chemistry (DiFC) Emilio Segrè, University of Palermo, Building 17, V.le delle Scienze, Palermo 90128, Italy.
| | - Caterina Alfano
- Structural Biology and Biophysics Unit, Fondazione Ri.MED, Palermo 90133, Italy
| | - Bruno Pignataro
- Department of Physics and Chemistry (DiFC) Emilio Segrè, University of Palermo, Building 17, V.le delle Scienze, Palermo 90128, Italy.
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2
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Ti YT, Cheng HC, Li Y, Tu HL. Multiplexed patterning of hybrid lipid membrane and protein arrays for cell signaling study. LAB ON A CHIP 2021; 21:2711-2720. [PMID: 34109339 DOI: 10.1039/d1lc00178g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The supported lipid bilayer (SLB) is a powerful tool for studying dynamic cell-environment interactions and has been widely used for biosensing applications. Using a reusable microfluidic chip, we present here a strategy to fabricate highly multiplexed SLB and protein arrays for cell signaling research. This approach allows for the rapid patterning of hundreds of highly reproducible and size-tunable SLB arrays with distinct lipid composition and mobility. Using fluorescence microscopy and fluorescence correlation spectroscopy, the lipid mobility is found to play a central role for patterning this membrane assay. Adding protein rings as diffusion barriers extends the accessible mobility range and maintains long-term stability of the hybrid array. Subsequent protein functionalizations on the SLB could be conducted using standard conjugation methods. The utility of the hybrid array for cell signaling experiments is demonstrated by studying the immune NF-κB signaling, whose activity is triggered by the binding of the membrane receptor, toll-like-receptor 4 (TLR 4), to its ligand, lipopolysaccharide (LPS), that is functionalized on the SLB. The patterned array allows cells to adhere and spread on areas without LPS before migrating to interact with membrane-bound LPS to initiate NF-κB activation. Overall, the strategy offers an efficient route to rapidly generate easily controllable and multiplexed molecular arrays that can serve as versatile platforms for biosensing and cell signaling research.
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Affiliation(s)
- Yu-Ting Ti
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan. and Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Hsiao-Chi Cheng
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan.
| | - Ying Li
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan.
| | - Hsiung-Lin Tu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan. and Genome and Systems Biology Degree Program, Academia Sinica and National Taiwan University, Taiwan
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3
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Buchegger B, Kreutzer J, Axmann M, Mayr S, Wollhofen R, Plochberger B, Jacak J, Klar TA. Proteins on Supported Lipid Bilayers Diffusing around Proteins Fixed on Acrylate Anchors. Anal Chem 2018; 90:12372-12376. [PMID: 30350628 PMCID: PMC6222595 DOI: 10.1021/acs.analchem.8b02588] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 10/16/2018] [Indexed: 01/04/2023]
Abstract
Mobility of proteins and lipids plays a major role in physiological processes. Platforms which were developed to study protein interaction between immobilized and mobile proteins suffer from shortcomings such as fluorescence quenching or complicated fabrication methods. Here we report a versatile platform comprising immobilized histidine-tagged proteins and biotinylated proteins in a mobile phase. Importantly, multiphoton photolithography was used for easy and fast fabrication of the platform and allows, in principle, extension of its application to three dimensions. The platform, which is made up of functionalized polymer structures embedded in a mobile lipid bilayer, shows low background fluorescence and allows for mobility of arbitrary proteins.
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Affiliation(s)
- Bianca Buchegger
- Institute
of Applied Physics, Johannes Kepler University
Linz, Altenberger Straße 69, 4040 Linz, Austria
| | - Johannes Kreutzer
- Institute
of Applied Physics, Johannes Kepler University
Linz, Altenberger Straße 69, 4040 Linz, Austria
| | - Markus Axmann
- Institute
of Medical Chemistry, Center for Pathobiochemistry and Genetics, Medical University of Vienna, Währinger Straße 10, 1090 Vienna, Austria
| | - Sandra Mayr
- School
of Medical Engineering and Applied Social Sciences, University of Applied Sciences Upper Austria, Garnisonstraße 21, 4020 Linz, Austria
| | - Richard Wollhofen
- Institute
of Applied Physics, Johannes Kepler University
Linz, Altenberger Straße 69, 4040 Linz, Austria
| | - Birgit Plochberger
- School
of Medical Engineering and Applied Social Sciences, University of Applied Sciences Upper Austria, Garnisonstraße 21, 4020 Linz, Austria
| | - Jaroslaw Jacak
- Institute
of Applied Physics, Johannes Kepler University
Linz, Altenberger Straße 69, 4040 Linz, Austria
- School
of Medical Engineering and Applied Social Sciences, University of Applied Sciences Upper Austria, Garnisonstraße 21, 4020 Linz, Austria
| | - Thomas A. Klar
- Institute
of Applied Physics, Johannes Kepler University
Linz, Altenberger Straße 69, 4040 Linz, Austria
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4
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Moeller J, Denisin AK, Sim JY, Wilson RE, Ribeiro AJS, Pruitt BL. Controlling cell shape on hydrogels using lift-off protein patterning. PLoS One 2018; 13:e0189901. [PMID: 29298336 PMCID: PMC5752030 DOI: 10.1371/journal.pone.0189901] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 12/04/2017] [Indexed: 01/08/2023] Open
Abstract
Polyacrylamide gels functionalized with extracellular matrix proteins are commonly used as cell culture platforms to evaluate the combined effects of extracellular matrix composition, cell geometry and substrate rigidity on cell physiology. For this purpose, protein transfer onto the surface of polyacrylamide hydrogels must result in geometrically well-resolved micropatterns with homogeneous protein distribution. Yet the outcomes of micropatterning methods have not been pairwise evaluated against these criteria. We report a high-fidelity photoresist lift-off patterning method to pattern ECM proteins on polyacrylamide hydrogels with elastic moduli ranging from 5 to 25 kPa. We directly compare the protein transfer efficiency and pattern geometrical accuracy of this protocol to the widely used microcontact printing method. Lift-off patterning achieves higher protein transfer efficiency, increases pattern accuracy, increases pattern yield, and reduces variability of these factors within arrays of patterns as it bypasses the drying and transfer steps of microcontact printing. We demonstrate that lift-off patterned hydrogels successfully control cell size and shape and enable long-term imaging of actin intracellular structure and lamellipodia dynamics when we culture epithelial cells on these substrates.
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Affiliation(s)
- Jens Moeller
- Department of Mechanical Engineering, Stanford University, Stanford, California, United States of America
| | - Aleksandra K. Denisin
- Department of Mechanical Engineering, Stanford University, Stanford, California, United States of America
- Department of Bioengineering, Stanford University, Stanford, California, United States of America
| | - Joo Yong Sim
- Department of Mechanical Engineering, Stanford University, Stanford, California, United States of America
| | - Robin E. Wilson
- Department of Mechanical Engineering, Stanford University, Stanford, California, United States of America
| | - Alexandre J. S. Ribeiro
- Department of Mechanical Engineering, Stanford University, Stanford, California, United States of America
| | - Beth L. Pruitt
- Department of Mechanical Engineering, Stanford University, Stanford, California, United States of America
- Department of Bioengineering, Stanford University, Stanford, California, United States of America
- Stanford Cardiovascular Institute, Stanford University, Stanford, California, United States of America
- Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, California, United States of America
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5
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Sadeghian H, Herfst R, Winters J, Crowcombe W, Kramer G, van den Dool T, van Es MH. Development of a detachable high speed miniature scanning probe microscope for large area substrates inspection. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2015; 86:113706. [PMID: 26628143 DOI: 10.1063/1.4936270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We have developed a high speed, miniature scanning probe microscope (MSPM) integrated with a Positioning Unit (PU) for accurately positioning the MSPM on a large substrate. This combination enables simultaneous, parallel operation of many units on a large sample for high throughput measurements. The size of the MSPM is 19 × 45 × 70 mm(3). It contains a one-dimensional flexure stage with counter-balanced actuation for vertical scanning with a bandwidth of 50 kHz and a z-travel range of more than 2 μm. This stage is mechanically decoupled from the rest of the MSPM by suspending it on specific dynamically determined points. The motion of the probe, which is mounted on top of the flexure stage is measured by a very compact optical beam deflection (OBD). Thermal noise spectrum measurements of short cantilevers show a bandwidth of 2 MHz and a noise of less than 15 fm/Hz(1/2). A fast approach and engagement of the probe to the substrate surface have been achieved by integrating a small stepper actuator and direct monitoring of the cantilever response to the approaching surface. The PU has the same width as the MSPM, 45 mm and can position the MSPM to a pre-chosen position within an area of 275×30 mm(2) to within 100 nm accuracy within a few seconds. During scanning, the MSPM is detached from the PU which is essential to eliminate mechanical vibration and drift from the relatively low-resonance frequency and low-stiffness structure of the PU. Although the specific implementation of the MSPM we describe here has been developed as an atomic force microscope, the general architecture is applicable to any form of SPM. This high speed MSPM is now being used in a parallel SPM architecture for inspection and metrology of large samples such as semiconductor wafers and masks.
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Affiliation(s)
- Hamed Sadeghian
- Department of Optomechatronics, Netherlands Organization for Scientific Applied Research, TNO, Stieltjesweg 1, 2628 CK Delft, The Netherlands
| | - Rodolf Herfst
- Department of Optomechatronics, Netherlands Organization for Scientific Applied Research, TNO, Stieltjesweg 1, 2628 CK Delft, The Netherlands
| | - Jasper Winters
- Department of Optomechatronics, Netherlands Organization for Scientific Applied Research, TNO, Stieltjesweg 1, 2628 CK Delft, The Netherlands
| | - Will Crowcombe
- Department of Optomechatronics, Netherlands Organization for Scientific Applied Research, TNO, Stieltjesweg 1, 2628 CK Delft, The Netherlands
| | - Geerten Kramer
- Department of Optomechatronics, Netherlands Organization for Scientific Applied Research, TNO, Stieltjesweg 1, 2628 CK Delft, The Netherlands
| | - Teun van den Dool
- Department of Optomechatronics, Netherlands Organization for Scientific Applied Research, TNO, Stieltjesweg 1, 2628 CK Delft, The Netherlands
| | - Maarten H van Es
- Department of Optomechatronics, Netherlands Organization for Scientific Applied Research, TNO, Stieltjesweg 1, 2628 CK Delft, The Netherlands
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6
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Romanov V, Davidoff SN, Miles AR, Grainger DW, Gale BK, Brooks BD. A critical comparison of protein microarray fabrication technologies. Analyst 2015; 139:1303-26. [PMID: 24479125 DOI: 10.1039/c3an01577g] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Of the diverse analytical tools used in proteomics, protein microarrays possess the greatest potential for providing fundamental information on protein, ligand, analyte, receptor, and antibody affinity-based interactions, binding partners and high-throughput analysis. Microarrays have been used to develop tools for drug screening, disease diagnosis, biochemical pathway mapping, protein-protein interaction analysis, vaccine development, enzyme-substrate profiling, and immuno-profiling. While the promise of the technology is intriguing, it is yet to be realized. Many challenges remain to be addressed to allow these methods to meet technical and research expectations, provide reliable assay answers, and to reliably diversify their capabilities. Critical issues include: (1) inconsistent printed microspot morphologies and uniformities, (2) low signal-to-noise ratios due to factors such as complex surface capture protocols, contamination, and static or no-flow mass transport conditions, (3) inconsistent quantification of captured signal due to spot uniformity issues, (4) non-optimal protocol conditions such as pH, temperature, drying that promote variability in assay kinetics, and lastly (5) poor protein (e.g., antibody) printing, storage, or shelf-life compatibility with common microarray assay fabrication methods, directly related to microarray protocols. Conventional printing approaches, including contact (e.g., quill and solid pin), non-contact (e.g., piezo and inkjet), microfluidics-based, microstamping, lithography, and cell-free protein expression microarrays, have all been used with varying degrees of success with figures of merit often defined arbitrarily without comparisons to standards, or analytical or fiduciary controls. Many microarray performance reports use bench top analyte preparations lacking real-world relevance, akin to "fishing in a barrel", for proof of concept and determinations of figures of merit. This review critiques current protein-based microarray preparation techniques commonly used for analytical and function-based proteomics and their effects on array-based assay performance.
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Affiliation(s)
- Valentin Romanov
- Wasatch Microfluidics, LLC, 825 N. 300 W., Suite C325, Salt Lake City, UT, USA.
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7
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Liu Y, Medda R, Liu Z, Galior K, Yehl K, Spatz JP, Cavalcanti-Adam E, Salaita K. Nanoparticle tension probes patterned at the nanoscale: impact of integrin clustering on force transmission. NANO LETTERS 2014; 14:5539-46. [PMID: 25238229 PMCID: PMC4189618 DOI: 10.1021/nl501912g] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 08/29/2014] [Indexed: 05/06/2023]
Abstract
Herein we aimed to understand how nanoscale clustering of RGD ligands alters the mechano-regulation of their integrin receptors. We combined molecular tension fluorescence microscopy with block copolymer micelle nanolithography to fabricate substrates with arrays of precisely spaced probes that can generate a 10-fold fluorescence response to pN-forces. We found that the mechanism of sensing ligand spacing is force-mediated. This strategy is broadly applicable to investigating receptor clustering and its role in mechanotransduction pathways.
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Affiliation(s)
- Yang Liu
- Department
of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Rebecca Medda
- Department
of Biophysical Chemistry, Institute of Physical Chemistry, Ruprecht-Karls-University, INF 253, 69120 Heidelberg, Germany
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent Systems, Stuttgart, Germany
| | - Zheng Liu
- Department
of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Kornelia Galior
- Department
of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Kevin Yehl
- Department
of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Joachim P. Spatz
- Department
of Biophysical Chemistry, Institute of Physical Chemistry, Ruprecht-Karls-University, INF 253, 69120 Heidelberg, Germany
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent Systems, Stuttgart, Germany
| | - Elisabetta
Ada Cavalcanti-Adam
- Department
of Biophysical Chemistry, Institute of Physical Chemistry, Ruprecht-Karls-University, INF 253, 69120 Heidelberg, Germany
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent Systems, Stuttgart, Germany
| | - Khalid Salaita
- Department
of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
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8
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Jurchenko C, Chang Y, Narui Y, Zhang Y, Salaita KS. Integrin-generated forces lead to streptavidin-biotin unbinding in cellular adhesions. Biophys J 2014; 106:1436-46. [PMID: 24703305 DOI: 10.1016/j.bpj.2014.01.049] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 12/20/2013] [Accepted: 01/29/2014] [Indexed: 11/18/2022] Open
Abstract
The interplay between chemical and mechanical signals plays an important role in cell biology, and integrin receptors are the primary molecules involved in sensing and transducing external mechanical cues. We used integrin-specific probes in molecular tension fluorescence microscopy to investigate the pN forces exerted by integrin receptors in living cells. The molecular tension fluorescence microscopy probe consisted of a cyclic Arg-Gly-Asp-D-Phe-Lys(Cys) (cRGDfK(C)) peptide tethered to the terminus of a polyethylene glycol polymer that was attached to a surface through streptavidin-biotin linkage. A fluorescence resonance energy transfer mechanism was used to visualize tension-driven extension of the polymer. Surprisingly, we found that integrin receptors dissociate streptavidin-biotin tethered ligands in focal adhesions within 60 min of cell seeding. Although streptavidin-biotin binding affinity is described as the strongest noncovalent bond in nature, and is ~10(6) - 10(8) times larger than that of integrin-RGD affinity, our results suggest that individual integrin-ligand complexes undergo a marked enhancement in stability when the receptor assembles in the cell membrane. Based on the observation of streptavidin-biotin unbinding, we also conclude that the magnitude of integrin-ligand tension in focal adhesions can reach values that are at least 10 fold larger than was previously estimated using traction force microscopy-based methods.
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Affiliation(s)
| | - Yuan Chang
- Department of Chemistry, Emory University, Atlanta, Georgia
| | - Yoshie Narui
- Department of Chemistry, Emory University, Atlanta, Georgia
| | - Yun Zhang
- Department of Chemistry, Emory University, Atlanta, Georgia
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9
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Lee YK, Kim S, Oh JW, Nam JM. Massively Parallel and Highly Quantitative Single-Particle Analysis on Interactions between Nanoparticles on Supported Lipid Bilayer. J Am Chem Soc 2014; 136:4081-8. [DOI: 10.1021/ja501225p] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Young Kwang Lee
- Department of Chemistry, Seoul National University, Seoul 151-747, South Korea
| | - Sungi Kim
- Department of Chemistry, Seoul National University, Seoul 151-747, South Korea
| | - Jeong-Wook Oh
- Department of Chemistry, Seoul National University, Seoul 151-747, South Korea
| | - Jwa-Min Nam
- Department of Chemistry, Seoul National University, Seoul 151-747, South Korea
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10
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Stabley D, Retterer S, Marshall S, Salaita K. Manipulating the lateral diffusion of surface-anchored EGF demonstrates that receptor clustering modulates phosphorylation levels. Integr Biol (Camb) 2013; 5:659-68. [PMID: 23416883 DOI: 10.1039/c3ib20239a] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Upon activation, the epidermal growth factor (EGF) receptor becomes phosphorylated and triggers a vast signaling network that has profound effects on cell growth. The EGF receptor is observed to assemble into clusters after ligand binding and tyrosine kinase autophosphorylation, but the role of these assemblies in the receptor signaling pathway remains unclear. To address this question, we measured the phosphorylation of EGFR when the EGF ligand was anchored onto laterally mobile and immobile surfaces. We found that cells generated clusters of ligand-receptor complex on mobile EGF surfaces, and displayed a lower ratio of phosphorylated EGFR to EGF when compared to immobilized EGF that is unable to cluster. This result was verified by tuning the lateral assembly of ligand-receptor complexes on the surface of living cells using patterned supported lipid bilayers. Nanoscale metal lines fabricated into the supported membrane constrained lipid diffusion and EGF receptor assembly into micron and sub-micron scale corrals. Single cell analysis indicated that clustering impacts EGF receptor activation, and larger clusters (>1 μm(2)) of ligand-receptor complex generated lower EGF receptor phosphorylation per ligand than smaller assemblies (<1 μm(2)) in HCC1143 cells that were engaged to ligand-functionalized surfaces. We investigated the mechanism of EGFR clustering by treating cells with compounds that disrupt the cytoskeleton (Latrunculin B), clathrin-mediated endocytosis (Pitstop2), and inhibit EGFR activation (Gefitinib). These results help elucidate the nature of large-scale EGFR clustering, thus underscoring the general significance of receptor spatial organization in tuning biochemical function.
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Affiliation(s)
- D Stabley
- Department of Chemistry, Emory University, Atlanta, GA, USA
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11
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Kristensen SH, Pedersen GA, Ogaki R, Bochenkov V, Nejsum LN, Sutherland DS. Complex protein nanopatterns over large areas via colloidal lithography. Acta Biomater 2013; 9:6158-68. [PMID: 23333875 DOI: 10.1016/j.actbio.2013.01.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Revised: 11/20/2012] [Accepted: 01/01/2013] [Indexed: 11/15/2022]
Abstract
The patterning of biomolecules at the nanoscale provides a powerful method to investigate cellular adhesion processes. A novel method for patterning is presented that is based on colloidal monolayer templating combined with multiple and angled deposition steps. Patterns of gold and SiO2 layers are used to generate complex protein nanopatterns over large areas. Simple circular patches or more complex ring structures are produced in addition to hierarchical patterns of smaller patches. The gold regions are modified through alkanethiol chemistry, which enables the preparation of extracellular matrix proteins (vitronectin) or cellular ligands (the extracellular domain of E-cadherin) in the nanopatterns, whereas the selective poly(l-lysine)-poly(ethylene glycol) functionalization of the SiO2 matrix renders it protein repellent. Cell studies, as a proof of principle, demonstrate the potential for using sets of systematically varied samples with simpler or more complex patterns for studies of cellular adhesive behavior and reveal that the local distribution of proteins within a simple patch critically influences cell adhesion.
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Affiliation(s)
- Stine H Kristensen
- iNANO Interdisciplinary Nanoscience Center, Aarhus University, Aarhus C, Denmark
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12
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Koegler P, Clayton A, Thissen H, Santos GNC, Kingshott P. The influence of nanostructured materials on biointerfacial interactions. Adv Drug Deliv Rev 2012; 64:1820-39. [PMID: 22705547 DOI: 10.1016/j.addr.2012.06.001] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Revised: 05/29/2012] [Accepted: 06/07/2012] [Indexed: 01/08/2023]
Abstract
Control over biointerfacial interactions in vitro and in vivo is the key to many biomedical applications: from cell culture and diagnostic tools to drug delivery, biomaterials and regenerative medicine. The increasing use of nanostructured materials is placing a greater demand on improving our understanding of how these new materials influence biointerfacial interactions, including protein adsorption and subsequent cellular responses. A range of nanoscale material properties influence these interactions, and material toxicity. The ability to manipulate both material nanochemistry and nanotopography remains challenging in its own right, however, a more in-depth knowledge of the subsequent biological responses to these new materials must occur simultaneously if they are ever to be affective in the clinic. We highlight some of the key technologies used for fabrication of nanostructured materials, examine how nanostructured materials influence the behavior of proteins and cells at surfaces and provide details of important analytical techniques used in this context.
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Affiliation(s)
- Peter Koegler
- Industrial Research Institute Swinburne, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
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13
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Kim J, Shin YH, Yun SH, Choi DS, Nam JH, Kim SR, Moon SK, Chung BH, Lee JH, Kim JH, Kim KY, Kim KM, Lim JH. Direct-Write Patterning of Bacterial Cells by Dip-Pen Nanolithography. J Am Chem Soc 2012; 134:16500-3. [DOI: 10.1021/ja3073808] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
| | | | | | | | | | | | | | - Bong Hyun Chung
- BioNanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Korea
| | - Jae-Hyuck Lee
- Department of Molecular Science
and Technology, Ajou University, Suwon
443-749, Korea
| | - Jae-Ho Kim
- Department of Molecular Science
and Technology, Ajou University, Suwon
443-749, Korea
| | - Ki-Young Kim
- Department of Textile Convergence of Biotechnology & Nanotechnology, Korea Institute of Industrial Technology, Ansan, Korea
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