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Drewitz M, Helbling M, Fried N, Bieri M, Moritz W, Lichtenberg J, Kelm JM. Towards automated production and drug sensitivity testing using scaffold-free spherical tumor microtissues. Biotechnol J 2011; 6:1488-96. [PMID: 22102438 DOI: 10.1002/biot.201100290] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 11/03/2011] [Accepted: 11/07/2011] [Indexed: 01/09/2023]
Abstract
Although the relevance of three-dimensional (3-D) culture has been recognized for years and exploited at an academic level, its translation to industrial applications has been slow. The development of reliable high-throughput technologies is clearly a prerequisite for the industrial implementation of 3-D models. In this study the robustness of spherical microtissue production and drug testing in a 96-well hanging-drop multiwell plate format was assessed on a standard 96-well channel robotic platform. Microtissue models derived from six different cell lines were produced and characterized according to their growth profile and morphology displaying high-density tissue-like reformation and growth over at least 15 days. The colon cancer cell line HCT116 was chosen as a model to assess microtissue-based assay reproducibility. Within three individual production batches the size variations of the produced microtissues were below 5%. Reliability of the microtissue-based assay was tested using two reference compounds, staurosporine and chlorambucil. In four independent drug testings the calculated IC(50) values were benchmarked against 2-D multiwell testings displaying similar consistency. The technology presented here for the automated production of a variety of microtissues for efficacy testing in a standard 96-well format will aid the implementation of more organotypic models at an early time point in the drug discovery process.
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Yamaguchi M, Ikeda K, Suzuki M, Kiyohara A, Kudoh SN, Shimizu K, Taira T, Ito D, Uchida T, Gohara K. Cell patterning using a template of microstructured organosilane layer fabricated by vacuum ultraviolet light lithography. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:12521-12532. [PMID: 21899360 DOI: 10.1021/la202904g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Micropatterning techniques have become increasingly important in cellular biology. Cell patterning is achieved by various methods. Photolithography is one of the most popular methods, and several light sources (e.g., excimer lasers and mercury lamps) are used for that purpose. Vacuum ultraviolet (VUV) light that can be produced by an excimer lamp is advantageous for fabricating material patterns, since it can decompose organic materials directly and efficiently without photoresist or photosensitive materials. Despite the advantages, applications of VUV light to pattern biological materials are few. We have investigated cell patterning by using a template of a microstructured organosilane layer fabricated by VUV lithography. We first made a template of a microstructured organosilane layer by VUV lithography. Cell adhesive materials (poly(d-lysine) and polyethyleneimine) were chemically immobilized on the organosilane template, producing a cell adhesive material pattern. Primary rat cardiac and neuronal cells were successfully patterned by culturing them on the pattern substrate. Long-term culturing was attained for up to two weeks for cardiac cells and two months for cortex cells. We have discussed the reproducibility of cell patterning and made suggestions to improve it.
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Affiliation(s)
- Munehiro Yamaguchi
- Advanced Industrial Science and Technology (AIST), 2-17-2-1, Tsukisamu-Higashi, Sapporo, 062-8517 Japan
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53
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Smoak EM, Fath KR, Barnaby SN, Grant VC, Banerjee IA. pH tunable self-assembly of chicoric acid and their biocompatibility studies. Supramol Chem 2011. [DOI: 10.1080/10610278.2011.601309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Evan M. Smoak
- a Department of Chemistry , Fordham University , 441 E. Fordham Road, Bronx, NY, 10458, USA
| | - Karl R. Fath
- b Department of Biology , Queens College, City University of New York and the Graduate Center , Kissena Boulevard, Flushing, NY, 11367, USA
| | - Stacey N. Barnaby
- a Department of Chemistry , Fordham University , 441 E. Fordham Road, Bronx, NY, 10458, USA
| | - Valerie C. Grant
- a Department of Chemistry , Fordham University , 441 E. Fordham Road, Bronx, NY, 10458, USA
| | - Ipsita A. Banerjee
- a Department of Chemistry , Fordham University , 441 E. Fordham Road, Bronx, NY, 10458, USA
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Koyama S. Electrically modulated attachment and detachment of animal cells cultured on an optically transparent patterning electrode. J Biosci Bioeng 2011; 111:574-83. [DOI: 10.1016/j.jbiosc.2010.12.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Revised: 12/28/2010] [Accepted: 12/30/2010] [Indexed: 10/18/2022]
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Abstract
In the past decade, the tendency to move from a global, one-size-fits-all treatment philosophy to personalized medicine is based, in part, on the nuanced differences and sub-classifications of disease states. Our knowledge of these varied states stems from not only the ability to diagnose, classify, and perform experiments on cell populations as a whole, but also from new technologies that allow interrogation of cell populations at the individual cell level. Such departures from conventional thinking are driven by the recognition that clonal cell populations have numerous activities that manifest as significant levels of non-genetic heterogeneity. Clonal populations by definition originate from a single genetic origin so are regarded as having a high level of homogeneity as compared to genetically distinct cell populations. However, analysis at the single cell level has revealed a different phenomenon; cells and organisms require an inherent level of non-genetic heterogeneity to function properly, and in some cases, to survive. The growing understanding of this occurrence has lead to the development of methods to monitor, analyze, and better characterize the heterogeneity in cell populations. Following the trend of DNA- and protein microarrays, platforms capable of simultaneously monitoring each cell in a population have been developed. These cellular microarray platforms and other related formats allow for continuous monitoring of single live cells and simultaneously generate individual cell and average population data that are more descriptive and information-rich than traditional bulk methods. These technological advances have helped develop a better understanding of the intricacies associated with biological processes and afforded greater insight into complex biological systems. The associated instruments, techniques, and reagents now allow for highly multiplexed analyses, which enable multiple cellular activities, processes, or pathways to be monitored simultaneously. This critical review will discuss the paradigm shift associated with cellular heterogeneity, speak to the key developments that have lead to our better understanding of systems biology, and detail the future directions of the discipline (281 references).
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Affiliation(s)
- Maureen A Walling
- Department of Chemistry, University at Albany, SUNY, 1400 Washington Ave., Albany, NY 12222, USA
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56
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Choi WS, Ha D, Park S, Kim T. Synthetic multicellular cell-to-cell communication in inkjet printed bacterial cell systems. Biomaterials 2011; 32:2500-7. [PMID: 21208654 DOI: 10.1016/j.biomaterials.2010.12.014] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2010] [Accepted: 12/10/2010] [Indexed: 12/25/2022]
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57
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Leclair AM, Ferguson SS, Lagugné-Labarthet F. Surface patterning using plasma-deposited fluorocarbon thin films for single-cell positioning and neural circuit arrangement. Biomaterials 2011; 32:1351-60. [DOI: 10.1016/j.biomaterials.2010.10.051] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Accepted: 10/22/2010] [Indexed: 12/28/2022]
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58
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Lee JY, Revzin A. Merging photolithography and robotic protein printing to create cellular microarrays. Methods Mol Biol 2011; 671:195-206. [PMID: 20967631 DOI: 10.1007/978-1-59745-551-0_11] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Photolithographic patterning of proteins on surfaces has been used extensively in the past to define cell adhesion domains with micrometer-scale resolution. However, photolithographic patterning is not amenable to depositing several different proteins on the same surface. We propose to merge photolithography with robotic printing of proteins in order to create arrays of protein spots (∼300-500 μm diameters) with encoded micrometer-scale cell adhesive domains. This method for biointerface design can employ standard positive tone resist lithography to create temporary stencils for printing of protein arrays. Alternatively, nonfouling poly(ethylene glycol) hydrogels can be micropatterned on top of protein spots. In both cases, cells become adherent on the underlying protein domains, but on-the-spot distribution of cells is defined by the photolithographic pattern. The ability to define multiple cell-substrate and cell-cell interaction scenarios on the same surface is applicable to high-throughput screening of the microenvironment components required for cellular differentiation, for example, for guiding stem cells toward the desired tissue type.
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Affiliation(s)
- Ji Youn Lee
- Department of Biomedical Engineering, University of California, Davis, CA, USA
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59
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Lee Y, Lee HJ, Son KJ, Koh WG. Fabrication of hydrogel-micropatterned nanofibers for highly sensitive microarray-based immunosensors having additional enzyme-based sensing capability. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm03881d] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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60
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Ben-Yoav H, Melamed S, Freeman A, Shacham-Diamand Y, Belkin S. Whole-cell biochips for bio-sensing: integration of live cells and inanimate surfaces. Crit Rev Biotechnol 2010; 31:337-53. [PMID: 21190513 DOI: 10.3109/07388551.2010.532767] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Recent advances in the convergence of the biological, chemical, physical, and engineering sciences have opened new avenues of research into the interfacing of diverse biological moieties with inanimate platforms. A main aspect of this field, the integration of live cells with micro-machined platforms for high throughput and bio-sensing applications, is the subject of the present review. These unique hybrid systems are configured in a manner that ensures positioning of the cells in designated patterns, and enables cellular viability maintenance, and monitoring of cellular functionality. Here we review both animate and inanimate surface properties and how they affect cellular attachment, describe relevant modifications of both types of surfaces, list technologies for platform engineering and for cell deposition in the desired configurations, and discuss the influence of various deposition and immobilization methods on the viability and performance of the immobilized cells.
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Affiliation(s)
- Hadar Ben-Yoav
- Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University, Tel-Aviv, Israel
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61
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Nakazawa K, Shinmura Y, Yoshiura Y, Sakai Y. Effect of cell spot sizes on micropatterned cultures of rat hepatocytes. Biochem Eng J 2010. [DOI: 10.1016/j.bej.2010.09.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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62
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Harper JC, Khripin CY, Carnes EC, Ashley CE, Lopez DM, Savage T, Jones HDT, Davis RW, Nunez DE, Brinker LM, Kaehr B, Brozik SM, Brinker CJ. Cell-directed integration into three-dimensional lipid-silica nanostructured matrices. ACS NANO 2010; 4:5539-5550. [PMID: 20849120 DOI: 10.1021/nn101793u] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We report a unique approach in which living cells direct their integration into 3D solid-state nanostructures. Yeast cells deposited on a weakly condensed lipid/silica thin film mesophase actively reconstruct the surface to create a fully 3D bio/nano interface, composed of localized lipid bilayers enveloped by a lipid/silica mesophase, through a self-catalyzed silica condensation process. Remarkably, this integration process selects exclusively for living cells over the corresponding apoptotic cells (those undergoing programmed cell death), via the development of a pH gradient, which catalyzes silica deposition and the formation of a coherent interface between the cell and surrounding silica matrix. Added long-chain lipids or auxiliary nanocomponents are localized within the pH gradient, allowing the development of complex active and accessible bio/nano interfaces not achievable by other synthetic methods. Overall, this approach provides the first demonstration of active cell-directed integration into a nominally solid-state three-dimensional architecture. It promises a new means to integrate "bio" with "nano" into platforms useful to study and manipulate cellular behavior at the individual cell level and to interface living organisms with electronics, photonics, and fluidics.
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Affiliation(s)
- Jason C Harper
- Department of Chemical and Nuclear Engineering, University of New Mexico, Albuquerque, New Mexico 87131, USA
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63
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James T, Cho JH, Fernandes R, Randhawa JS, Gracias DH. A one-step etching method to produce gold nanoparticle coated silicon microwells and microchannels. Anal Bioanal Chem 2010; 398:2949-54. [DOI: 10.1007/s00216-010-4260-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Accepted: 09/25/2010] [Indexed: 11/24/2022]
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64
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Anselme K, Davidson P, Popa A, Giazzon M, Liley M, Ploux L. The interaction of cells and bacteria with surfaces structured at the nanometre scale. Acta Biomater 2010; 6:3824-46. [PMID: 20371386 DOI: 10.1016/j.actbio.2010.04.001] [Citation(s) in RCA: 451] [Impact Index Per Article: 32.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2009] [Revised: 03/30/2010] [Accepted: 04/01/2010] [Indexed: 12/22/2022]
Abstract
The current development of nanobiotechnologies requires a better understanding of cell-surface interactions on the nanometre scale. Recently, advances in nanoscale patterning and detection have allowed the fabrication of appropriate substrates and the study of cell-substrate interactions. In this review we discuss the methods currently available for nanoscale patterning and their merits, as well as techniques for controlling the surface chemistry of materials at the nanoscale without changing the nanotopography and the possibility of truly characterizing the surface chemistry at the nanoscale. We then discuss the current knowledge of how a cell can interact with a substrate at the nanoscale and the effect of size, morphology, organization and separation of nanofeatures on cell response. Moreover, cell-substrate interactions are mediated by the presence of proteins adsorbed from biological fluids on the substrate. Many questions remain on the effect of nanotopography on protein adsorption. We review papers related to this point. As all these parameters have an influence on cell response, it is important to develop specific studies to point out their relative influence, as well as the biological mechanisms underlying cell responses to nanotopography. This will be the basis for future research in this field. An important topic in tissue engineering is the effect of nanoscale topography on bacteria, since cells have to compete with bacteria in many environments. The limited current knowledge of this topic is also discussed in the light of using topography to encourage cell adhesion while limiting bacterial adhesion. We also discuss current and prospective applications of cell-surface interactions on the nanoscale. Finally, based on questions raised previously that remain to be solved in the field, we propose future directions of research in materials science to help elucidate the relative influence of the physical and chemical aspects of nanotopography on bacteria and cell response with the aim of contributing to the development of nanobiotechnologies.
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65
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Cells preferentially grow on rough substrates. Biomaterials 2010; 31:7205-12. [DOI: 10.1016/j.biomaterials.2010.06.016] [Citation(s) in RCA: 209] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2010] [Accepted: 06/04/2010] [Indexed: 11/17/2022]
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66
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Walling MA, Wang S, Shi H, Shepard JRE. Quantum dots for positional registration in live cell-based arrays. Anal Bioanal Chem 2010; 398:1263-71. [DOI: 10.1007/s00216-010-4053-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2010] [Revised: 07/14/2010] [Accepted: 07/20/2010] [Indexed: 11/29/2022]
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67
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Jenness NJ, Hill RT, Hucknall A, Chilkoti A, Clark RL. A versatile diffractive maskless lithography for single-shot and serial microfabrication. OPTICS EXPRESS 2010; 18:11754-62. [PMID: 20589036 PMCID: PMC2920747 DOI: 10.1364/oe.18.011754] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We demonstrate a diffractive maskless lithographic system that is capable of rapidly performing both serial and single-shot micropatterning. Utilizing the diffractive properties of phase holograms displayed on a spatial light modulator, arbitrary intensity distributions were produced to form two and three dimensional micropatterns/structures in a variety of substrates. A straightforward graphical user interface was implemented to allow users to load templates and change patterning modes within the span of a few minutes. A minimum resolution of approximately 700 nm is demonstrated for both patterning modes, which compares favorably to the 232 nm resolution limit predicted by the Rayleigh criterion. The presented method is rapid and adaptable, allowing for the parallel fabrication of microstructures in photoresist as well as the fabrication of protein microstructures that retain functional activity.
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Affiliation(s)
- Nathan J Jenness
- 1Center for Biologically Inspired Materials and Material Systems, Duke University, Durham, NC 27708, USA.
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68
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Liu X, Tang S, Choi HK, Choi HS. Effect of plasma-treated polymer substrates on fabricating surface microsystems through LbL coating. Macromol Res 2010. [DOI: 10.1007/s13233-010-0506-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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69
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Khan S, Newaz G. A comprehensive review of surface modification for neural cell adhesion and patterning. J Biomed Mater Res A 2010; 93:1209-24. [DOI: 10.1002/jbm.a.32698] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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70
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Gan J, Chen H, Zhou F, Huang H, Zheng J, Song W, Yuan L, Wu Z. Fabrication of cell pattern on poly(dimethylsiloxane) by vacuum ultraviolet lithography. Colloids Surf B Biointerfaces 2010; 76:381-5. [DOI: 10.1016/j.colsurfb.2009.11.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2009] [Revised: 10/22/2009] [Accepted: 11/13/2009] [Indexed: 10/20/2022]
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71
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Micropatterned assembly of silica nanoparticles for a protein microarray with enhanced detection sensitivity. Biomed Microdevices 2010; 12:457-64. [DOI: 10.1007/s10544-010-9402-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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72
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Bai HJ, Gou HL, Xu JJ, Chen HY. Molding a silver nanoparticle template on polydimethylsiloxane to efficiently capture mammalian cells. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:2924-2929. [PMID: 20141218 DOI: 10.1021/la902683x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Herein, a functional template made up of in situ synthesized silver nanoparticles (AgNPs) is prepared on polydimethylsiloxane (PDMS) for the spatial control of cell capture, where the residual Si-H groups in the PDMS matrix are used as reductants to reduce AgNO(3) for forming AgNPs. In virtue of microfluidic system, a one-dimensional array pattern of AgNPs is obtained easily. Further combining with plasma treatment, a two-dimensional array pattern of AgNPs could be achieved. The obtained PDMS-AgNPs composite is characterized in detail. The PDMS-AgNPs composite shows good antibacterial property in E. coli adhesion tests. The patterns possess hifi and high resolution (ca. 8 microm). Cell patterns with high efficiency and spatial selectivity are further formed with the aid of H-Arg-Gly-Asp-Cys-OH (RGDC) tetrapeptide which is grafted on the AgNPs template. Cells immobilized on the template show a good ability for adhesion, spreading, migration, and growth.
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Affiliation(s)
- Hai-Jing Bai
- Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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73
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Li X, Wang T, Zhang J, Yan X, Zhang X, Zhu D, Li W, Zhang X, Yang B. Modulating two-dimensional non-close-packed colloidal crystal arrays by deformable soft lithography. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:2930-2936. [PMID: 19715332 DOI: 10.1021/la9027018] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We report a simple method to fabricate two-dimensional (2D) periodic non-close-packed (ncp) arrays of colloidal microspheres with controllable lattice spacing, lattice structure, and pattern arrangement. This method combines soft lithography technique with controlled deformation of polydimethylsiloxane (PDMS) elastomer to convert 2D hexagonal close-packed (hcp) silica microsphere arrays into ncp ones. Self-assembled 2D hcp microsphere arrays were transferred onto the surface of PDMS stamps using the lift-up technique, and then their lattice spacing and lattice structure could be adjusted by solvent swelling or mechanical stretching of the PDMS stamps. Followed by a modified microcontact printing (microcp) technique, the as-prepared 2D ncp microsphere arrays were transferred onto a flat substrate coated with a thin film of poly(vinyl alcohol) (PVA). After removing the PVA film by calcination, the ncp arrays that fell on the substrate without being disturbed could be lifted up, deformed, and transferred again by another PDMS stamp; therefore, the lattice feature could be changed step by step. Combining isotropic solvent swelling and anisotropic mechanical stretching, it is possible to change hcp colloidal arrays into full dimensional ncp ones in all five 2D Bravais lattices. This deformable soft lithography-based lift-up process can also generate patterned ncp arrays of colloidal crystals, including one-dimensional (1D) microsphere arrays with designed structures. This method affords opportunities and spaces for fabrication of novel and complex structures of 1D and 2D ncp colloidal crystal arrays, and these as-prepared structures can be used as molds for colloidal lithography or prototype models for optical materials.
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Affiliation(s)
- Xiao Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China
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74
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Liu S, Han G, Shu M, Han L, Che S. Monodispersed inorganic/organic hybrid spherical colloids: Versatile synthesis and their gas-triggered reversibly switchable wettability. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/c0jm02101f] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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75
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Kim MH, Kino-oka M, Taya M. Designing culture surfaces based on cell anchoring mechanisms to regulate cell morphologies and functions. Biotechnol Adv 2010; 28:7-16. [DOI: 10.1016/j.biotechadv.2009.08.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2009] [Revised: 07/28/2009] [Accepted: 08/01/2009] [Indexed: 12/11/2022]
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76
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Zou Y, Yeh PYJ, Rossi NAA, Brooks DE, Kizhakkedathu JN. Nonbiofouling Polymer Brush with Latent Aldehyde Functionality as a Template for Protein Micropatterning. Biomacromolecules 2009; 11:284-93. [DOI: 10.1021/bm901159d] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuquan Zou
- Centre for Blood Research and Department of Pathology and Laboratory of Medicine, Department of Chemistry, and Department of Mechanical Engineering, 2350 Health Sciences Mall, University of British Columbia, Vancouver, B.C.V6T 1Z3, Canada
| | - Po-Ying J. Yeh
- Centre for Blood Research and Department of Pathology and Laboratory of Medicine, Department of Chemistry, and Department of Mechanical Engineering, 2350 Health Sciences Mall, University of British Columbia, Vancouver, B.C.V6T 1Z3, Canada
| | - Nicholas A. A. Rossi
- Centre for Blood Research and Department of Pathology and Laboratory of Medicine, Department of Chemistry, and Department of Mechanical Engineering, 2350 Health Sciences Mall, University of British Columbia, Vancouver, B.C.V6T 1Z3, Canada
| | - Donald E. Brooks
- Centre for Blood Research and Department of Pathology and Laboratory of Medicine, Department of Chemistry, and Department of Mechanical Engineering, 2350 Health Sciences Mall, University of British Columbia, Vancouver, B.C.V6T 1Z3, Canada
| | - Jayachandran N. Kizhakkedathu
- Centre for Blood Research and Department of Pathology and Laboratory of Medicine, Department of Chemistry, and Department of Mechanical Engineering, 2350 Health Sciences Mall, University of British Columbia, Vancouver, B.C.V6T 1Z3, Canada
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77
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Grainger DW, Castner DG, Dubey M, Emoto K, Takahashi H. Affinity-based Protein Surface Pattern Formation by Ligand Self-Selection from Mixed Protein Solutions. ADVANCED FUNCTIONAL MATERIALS 2009; 19:3046-3055. [PMID: 23504611 PMCID: PMC3597123 DOI: 10.1002/adfm.200900809] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Photolithographically prepared surface patterns of two affinity ligands (biotin and chloroalkane) specific for two proteins (streptavidin and HaloTag®, respectively) are used to spontaneously form high-fidelity surface patterns of the two proteins from their mixed solution. High affinity protein-surface self-selection onto patterned ligands on surfaces exhibiting low non-specific adsorption rapidly yields the patterned protein surfaces. Fluorescence images after protein immobilization show high specificity of the target proteins to their respective surface patterned ligands. Time-of-flight secondary ion mass spectrometry (ToF-SIMS) imaging further supports the chemical specificity of streptavidin and HaloTag® for their surface patterned ligands from mixed protein solutions. However, ToF-SIMS did detect some non-specific adsorption of bovine serum albumin, a masking protein present in excess in the adsorbing solutions, on the patterned surfaces. Protein amino acid composition, surface coverage, density and orientation are important parameters that determine the relative ToF-SIMS fragmentation pattern yields. ToF-SIMS amino acid-derived ion fragment yields summed to produce surface images can reliably determine which patterned surface regions contain bound proteins, but do not readily discriminate between different co-planar protein regions. Principal component analysis (PCA) of these ToF-SIMS data, however, improves discrimination of ions specific to each protein, facilitating surface pattern discrimination and contrast.
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Affiliation(s)
- David W. Grainger
- Departments of Pharmaceutics and Pharmaceutical Chemistry, and Bioengineering, University of Utah, Salt Lake City, UT 84112-5820 (USA)
| | - David G. Castner
- National ESCA and Surface Analysis Center for Biomedical Problems, Department of Chemical Engineering, and Department of Bioengineering, Box 351750, University of Washington Seattle, WA 98195-1750 (USA)
| | - Manish Dubey
- National ESCA and Surface Analysis Center for Biomedical Problems, and Department of Chemical Engineering, Box 351750 University of Washington, Seattle, WA 98195-1750 (USA)
| | - Kazunori Emoto
- Accelr8 Technology Corporation, 7000 N. Broadway, Suite 3-307, Denver, CO 80221 (USA). current address: Great Basin Scientific, 2400 Trade Centre Ave., Longmont, CO 80503 USA
| | - Hironobu Takahashi
- Departments of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT 84112-5820 (USA). current address: Institute of Advanced Biomedical Engineering and Science, Tokyo Women’s Medical University, 8-1 Kawadacho, Shinjuku, Tokyo 162-8666 Japan
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78
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Bai HJ, Shao ML, Gou HL, Xu JJ, Chen HY. Patterned Au/poly(dimethylsiloxane) substrate fabricated by chemical plating coupled with electrochemical etching for cell patterning. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:10402-10407. [PMID: 19415913 DOI: 10.1021/la900944c] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In this paper, we present a novel approach for preparing patterned Au/poly(dimethylsiloxane) (PDMS) substrate. Chemical gold plating instead of conventional metal evaporation or sputtering was introduced to achieve a homogeneous gold layer on native PDMS for the first time, which possesses low-cost and simple operation. An electrochemical oxidation reaction accompanied by the coordination of gold and chloride anion was then exploited to etch gold across the region covered by electrolyte. On the basis of such an electrochemical etching, heterogeneous Au/PDMS substrate which has a gold "island" pattern or PDMS dots pattern was fabricated. Hydrogen bubbles which were generated in the etching process due to water electrolysis were used to produce a safe region under the Pt auxiliary electrode. The safe region would protect gold film from etching and lead to the formation of the gold "island" pattern. In virtue of a PDMS stencil with holes array, gold could be etched from the exposed region and take on the PDMS dots pattern which was selected to for protein and cell patterning. This patterned Au/PDMS substrate is very convenient to construct cytophobic and cytophilic regions. Self-assembled surface modification of (1-mercaptoundec-11-yl)hexa(ethylene glycol) on gold and adsorption of fibronectin on PDMS are suitable for effective protein and cell patterning. This patterned Au/PDMS substrate would be a potentially versatile platform for fabricating biosensing arrays.
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Affiliation(s)
- Hai-Jing Bai
- Key Laboratory of Analytical Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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79
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Goubko CA, Cao X. Patterning multiple cell types in co-cultures: A review. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2009. [DOI: 10.1016/j.msec.2009.02.016] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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80
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LIU WW, CHEN ZL, JIANG XY. Methods for Cell Micropatterning on Two-Dimensional Surfaces and Their Applications in Biology. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2009. [DOI: 10.1016/s1872-2040(08)60113-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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81
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Chen H, Song W, Zhou F, Wu Z, Huang H, Zhang J, Lin Q, Yang B. The effect of surface microtopography of poly(dimethylsiloxane) on protein adsorption, platelet and cell adhesion. Colloids Surf B Biointerfaces 2009; 71:275-81. [DOI: 10.1016/j.colsurfb.2009.02.018] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2008] [Revised: 02/16/2009] [Accepted: 02/19/2009] [Indexed: 11/26/2022]
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82
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Arrabito G, Musumeci C, Aiello V, Libertino S, Compagnini G, Pignataro B. On the relationship between jetted inks and printed biopatterns: molecular-thin functional microarrays of glucose oxidase. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:6312-6318. [PMID: 19317422 DOI: 10.1021/la900071z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Arrays of circular spots of glucose oxidase have been obtained on functionalized silicon oxide by piezoelectric inkjet printing and the enzymatic activity toward glucose recognition has been monitored. The addition of glycerol to the molecular ink allows to obtain high spot definition and resolution (tens of micrometers wide; one molecule tall), but in spite of its well-known structural stabilizing properties, in dynamic conditions it may lead to increased protein stresses. The jetting voltage and pulse length have been found to be critical factors for both activity retention and pattern definition. High voltages and pulse lengths results in stress effects along with the loss of activity, which, at least in our experimental conditions, has been found to be recovered in time.
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83
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Bayiati P, Malainou A, Matrozos E, Tserepi A, Petrou PS, Kakabakos SE, Gogolides E. High-density protein patterning through selective plasma-induced fluorocarbon deposition on Si substrates. Biosens Bioelectron 2009; 24:2979-84. [DOI: 10.1016/j.bios.2009.03.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2009] [Accepted: 03/04/2009] [Indexed: 10/21/2022]
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84
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Jung CH, Hwang IT, Kwon HJ, Nho YC, Choi JH. Patterning of cells on a PVC film surface functionalized by ion irradiation. POLYM ADVAN TECHNOL 2009. [DOI: 10.1002/pat.1437] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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85
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Harper JC, Polsky R, Wheeler DR, Lopez DM, Arango DC, Brozik SM. A multifunctional thin film Au electrode surface formed by consecutive electrochemical reduction of aryl diazonium salts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:3282-3288. [PMID: 19437729 DOI: 10.1021/la803215z] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A multifunctional thin film surface capable of immobilizing two diverse molecules on a single gold electrode was prepared by consecutive electrodeposition of nitrophenyl and phenylboronic acid pinacol ester (PBA-PE) diazonium salts. Activation of the stacked film toward binding platinum nanoparticles (PtNPs) and yeast cells occurred via chemical deprotection of the pinacol ester followed by electroreduction of nitro to amino groups. FTIR spectral analysis was used to study and verify film composition at each stage of preparation. The affect of electrodeposition protocol over the thickness of the nitrophenyl and PBA-PE layers was explored and had a profound impact on the film properties. Thicker nitrophenyl films led to diminished PBA-PE diazonium reduction currents during assembly and decreased phenylboronic acid (PBA) layer thickness while allowing for higher PtNP loading and catalytic currents from PtNP-mediated peroxide reduction. Multilayer PBA films could be formed over the nitrophenyl film; however, only submonlayer PBA films permitted access to the underlying layer. The sequence of functional group activation toward binding was also shown to be significant, as perchlorate used to remove pinacol ester also converted aminophenyl groups accessible to the solution to nitrophenyl groups, preventing electrostatic PtNP binding. Finally, SEM images show PtNPs immobilized in close proximity (nanometers) to captured yeast cells on the PBA-aminophenyl-Au film. Such multibinding functionality films that maintain conductivity for subsequent electrochemical measurements hold promise for the development of electrochemical and/or optical platforms for fundamental cell studies, genomic and proteomic analysis, and biosensing.
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Affiliation(s)
- Jason C Harper
- Biosensors & Nanomaterials, Sandia National Laboratories, PO Box 5800, MS-0892, Albuquerque, New Mexico 87185, USA
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86
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Wei JH, Kacar T, Tamerler C, Sarikaya M, Ginger DS. Nanopatterning peptides as bifunctional inks for templated assembly. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2009; 5:689-693. [PMID: 19267336 DOI: 10.1002/smll.200801911] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- Joseph H Wei
- Department of Chemistry University of Washington Box 351700, Seattle, WA 98195, USA
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87
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Wu S, Liu X, Hu T, Chu PK, Ho JPY, Chan YL, Yeung KWK, Chu CL, Hung TF, Huo KF, Chung CY, Lu WW, Cheung KMC, Luk KDK. A biomimetic hierarchical scaffold: natural growth of nanotitanates on three-dimensional microporous Ti-based metals. NANO LETTERS 2008; 8:3803-3808. [PMID: 18950232 DOI: 10.1021/nl802145n] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Nanophase materials are promising alternative implant materials in tissue engineering. Here we report for the first time the large-scale direct growth of nanostructured bioactive titanates on three-dimensional (3D) microporous Ti-based metal (NiTi and Ti) scaffolds via a facile low temperature hydrothermal treatment. The nanostructured titanates show characteristics of 1D nanobelts/nanowires on a nanoskeleton layer. Besides resembling cancelous bone structure on the micro/macroscale, the 1D nanostructured titanate on the exposed surface is similar to the lowest level of hierarchical organization of collagen and hydroxyapatite. The resulting surface displays superhydrophilicity and favors deposition of hydroxyapatite and accelerates cell attachment and proliferation. The remarkable simplicity of this process makes it widely accessible as an enabling technique for applications from engineering materials treatment including energy-absorption materials and pollution-treatment materials to biotechnology.
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Affiliation(s)
- Shuilin Wu
- Department of Physics & Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
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88
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Huang YM, Uppalapati M, Hancock WO, Jackson TN. Neutravidin micropatterning by deep UV irradiation. LAB ON A CHIP 2008; 8:1745-1747. [PMID: 18813401 DOI: 10.1039/b802762e] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We describe a novel approach for directly patterning neutravidin protein by exposure to deep UV irradiation. Neutravidin is physically absorbed onto the glass or quartz substrate, dehydrated in acetone and air-dried. Dry neutravidin-coated samples are patterned either by top-side or back-side exposure to 185 nm UV. Subsequent introduction of fluorescent biotinylated proteins clearly demonstrates binding to the masked neutravidin regions and no binding to exposed areas. Patterned samples retain their protein affinity for at least three months of storage at room temperature.
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Affiliation(s)
- Ying-Ming Huang
- Department of Electrical Engineering, Penn State University, 218 Electrical Engineering West Building, University Park, PA 16803, USA
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89
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Blagoi G, Keller S, Persson F, Boisen A, Jakobsen MH. Photochemical modification and patterning of SU-8 using anthraquinone photolinkers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:9929-9932. [PMID: 18710270 DOI: 10.1021/la800948w] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Bioactive protein patterns and microarrays achieved by selective localization of biomolecules find various applications in biosensors, bio-microelectromechanical systems (bio-MEMS), and in basic protein studies. In this paper we describe simple photochemical methods to fabricate two-dimensional patterns on a Novolac A derivative polymer (SU-8) and, subsequently, their functionalization with biomolecules. Anthraquinone (AQ) derivatives are used to chemically modify and pattern SU-8 surfaces. Features as small as 20 mum are obtained when using uncollimated light. The X-Y spatial resolution of micropatterned AQ molecules is improved to 1.5 mum when a collimated light source is used. This micropatterning process will be important for the functionalization of MEMS-based biosensors. The method saves several processing steps and can be integrated in cleanroom fabrication thus avoiding contamination of the sensor surfaces.
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Affiliation(s)
- Gabriela Blagoi
- Department of Micro and Nanotechnology, Technical University of Denmark, DTU Nanotech, Kongens Lyngby, Denmark.
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90
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Ghosh M, Alves C, Tong Z, Tettey K, Konstantopoulos K, Stebe KJ. Multifunctional surfaces with discrete functionalized regions for biological applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:8134-42. [PMID: 18582132 PMCID: PMC2646758 DOI: 10.1021/la8006525] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2008] [Revised: 05/08/2008] [Indexed: 05/02/2023]
Abstract
In this paper we describe a method for creating multifunctional glass surfaces presenting discrete patches of different proteins on an inert PEG-functionalized background. Microcontact printing is used to stamp the substrate with octadecyltrichlorosilane to define the active regions. The substrate is then back-filled with PEG-silane {[[2-methoxypoly(ethyleneoxy)]propyl]trimethoxysilane} to define passive regions. A microfluidics device is subsequently affixed to the substrate to deliver proteins to the active regions, with as many channels as there are proteins to be patterned. Examples of trifunctional surfaces are given which present three terminating functional groups, i.e., protein 1, protein 2, and PEG. These surfaces should be broadly useful in biological studies, as patch size is well established to influence cell viability, growth, and differentiation. Three examples of cellular interactions with the surfaces are demonstrated, including the capture of cells from a single cell suspension, the selective sorting of cells from a mixed suspension, and the adhesion of cells to ligand micropatches at critical shear stresses. Within these examples, we demonstrate that the patterned immobilized proteins are active, as they retain their ability to interact with either antibodies in solution or receptors presented by cells. When appropriate (e.g., for E-selectin), proteins are patterned in their physiological orientations using a sandwich immobilization technique, which is readily accommodated within our method. The protein surface densities are highly reproducible in the patches, as supported by fluorescence intensity measurements. Potential applications include biosensors based on the interaction of cells or of marker proteins with protein patches, fundamental studies of cell adhesion as a function of patch size and shear stress, and studies of cell differentiation as a function of surface cues.
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Affiliation(s)
- Moniraj Ghosh
- Department of Chemical & Biomolecular Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218
| | - Christina Alves
- Department of Chemical & Biomolecular Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218
| | - Ziqiu Tong
- Department of Chemical & Biomolecular Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218
| | - Kwadwo Tettey
- Department of Chemical & Biomolecular Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218
| | - Konstantinos Konstantopoulos
- Department of Chemical & Biomolecular Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218
| | - Kathleen J. Stebe
- To whom correspondence should be addressed. E-mail: (K.K.); (K.J.S.)
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91
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Reska A, Gasteier P, Schulte P, Moeller M, Offenhäusser A, Groll J. Ultrathin Coatings with Change in Reactivity over Time Enable Functional In Vitro Networks Of Insect Neurons. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2008; 20:2751-2755. [PMID: 25213901 DOI: 10.1002/adma.200800270] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2008] [Revised: 02/28/2008] [Indexed: 06/03/2023]
Abstract
It's just not cricket! A novel coating system that enables covalent attachment of biomolecules in a nonfouling environment without use of additional chemical crosslinkers is presented. Concanavalin A is patterned on the coatings to direct cell adhesion and growth of neurons from the cricket Gryllus bimaculatus and generate functional, patterned in vitro insect neuronal networks for the first time.
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Affiliation(s)
- Anna Reska
- Institute for Bio and Nanosystems (IBN-2), Forschungszentrum Jülich 52425 Jülich (Germany)
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92
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dos Santos EA, Farina M, Soares GA, Anselme K. Surface energy of hydroxyapatite and beta-tricalcium phosphate ceramics driving serum protein adsorption and osteoblast adhesion. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2008; 19:2307-2316. [PMID: 18157507 DOI: 10.1007/s10856-007-3347-4] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2007] [Accepted: 12/05/2007] [Indexed: 05/25/2023]
Abstract
The main objective of this work was to evaluate the specific role of calcium phosphates surface energy on serum protein adsorption and human osteoblast adhesion, by isolating chemical effects from those caused by topography. Highly dense phosphate ceramics (single-phase hydroxyapatite HA and beta-tricalcium phosphates beta-TCP) presenting two distinct nano roughnesses were produced. Some samples were gold-sputter coated in order to conveniently mask the surface chemical effects (without modification of the original roughness) and to study the isolated effect of surface topography on cellular behavior. The results indicated that the nano topography of calcium phosphates strongly affected the protein adsorption process, being more important than surface chemistry. The seeding efficacy of osteoblasts was not affected nor by the topography neither by the calcium phosphate chemistries but the beta-TCP chemistry negatively influenced cell spreading. We observed that surface hydrophobicity is another way to change protein adsorption on surfaces. The decrease of the polar component of surface energy on gold-coated samples leaded to a decreased albumin and fibronectin adsorption but to an increased cell adhesion. Overall, this work contributes to better understand the role of topography and surface chemistry of calcium phosphates in serum protein adsorption and osteoblast adhesion.
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Affiliation(s)
- E A dos Santos
- Dep. de Eng. Metal. e de Materiais, COPPE/UFRJ, CP 68505, Rio de Janeiro, 21941-972, Brazil
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93
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Hasenbank MS, Edwards T, Fu E, Garzon R, Kosar TF, Look M, Mashadi-Hossein A, Yager P. Demonstration of multi-analyte patterning using piezoelectric inkjet printing of multiple layers. Anal Chim Acta 2008; 611:80-8. [DOI: 10.1016/j.aca.2008.01.048] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2007] [Revised: 01/07/2008] [Accepted: 01/11/2008] [Indexed: 11/30/2022]
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94
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Kim DN, Lee W, Koh WG. Micropatterning of proteins on the surface of three-dimensional poly(ethylene glycol) hydrogel microstructures. Anal Chim Acta 2008; 609:59-65. [PMID: 18243874 DOI: 10.1016/j.aca.2007.12.024] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2007] [Revised: 12/14/2007] [Accepted: 12/17/2007] [Indexed: 10/22/2022]
Abstract
This paper describes micropatterning of proteins on the surface of three-dimensional hydrogel microstructures. Poly(ethylene glycol) (PEG)-based hydrogel microstructures were fabricated on a glass substrate using a poly(dimethylsiloxane) (PDMS) replica as a molding insert and photolithography. The lateral dimension and height of the hydrogel microstructures were easily controlled by the feature size of the photomask and depth of the PDMS replica, respectively. Bovine serum albumin (BSA), a model protein, was covalently immobilized to the surface of the hydrogel microstructure via a 5-azidonitrobenzoyloxy N-hydroxysuccinimide bifunctional linker at a surface density of 1.48 mg cm(-2). The immobilization of BSA on the PEG hydrogel surface was demonstrated with XPS by confirming the formation of a new nitrogen peak, and the selective immobilization of fluorescent-labeled BSA on the outer region of the three-dimensional hydrogel micropattern was demonstrated by fluorescence. A hydrogel microstructure could immobilize two different enzymes separately, and sequential bienzymatic reaction was demonstrated by reacting glucose and Amplex Red with a hydrogel microstructure where glucose oxidase was immobilized on the surface and peroxidase was encapsulated. Activity of immobilized glucose oxidase was 16.5 U mg(-1), and different glucose concentration ranged from 0.1 to 20 mM could be successfully detected.
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Affiliation(s)
- Dae-Nyun Kim
- Department of Chemical Engineering, Yonsei University, 134 Sinchon-Dong, Seodaemoon-Gu, Seoul 120-749, Republic of Korea
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95
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Cheran LE, Benvenuto P, Thompson M. Coupling of neurons with biosensor devices for detection of the properties of neuronal populations. Chem Soc Rev 2008; 37:1229-42. [DOI: 10.1039/b712830b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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96
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Abstract
Biomolecule gradients have been shown to play roles in a wide range of biological processes including development, inflammation, wound healing, and cancer metastasis. Elucidation of these phenomena requires the ability to expose cells to biomolecule gradients that are quantifiable, controllable, and mimic those that are present in vivo. Here we review the major biological phenomena in which biomolecule gradients are employed, traditional in vitro gradient-generating methods developed over the past 50 years, and new microfluidic devices for generating gradients. Microfluidic gradient generators offer greater levels of precision, quantitation, and spatiotemporal gradient control than traditional methods, and may greatly enhance our understanding of many biological phenomena. For each method, we outline the salient features, capabilities, and applications.
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Affiliation(s)
- Thomas M Keenan
- Department of Bioengineering, University of Washington, Washington 98195, USA
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97
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NAKANISHI J, TAKARADA T, YAMAGUCHI K, MAEDA M. Recent Advances in Cell Micropatterning Techniques for Bioanalytical and Biomedical Sciences. ANAL SCI 2008; 24:67-72. [DOI: 10.2116/analsci.24.67] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Jun NAKANISHI
- International Center for Young Scientists, National Institute for Materials Science
- PRESTO, Japan Science and Technology Agency (JST)
| | - Tohru TAKARADA
- Bioengineering Laboratory, Discovery Research Institute, RIKEN
| | - Kazuo YAMAGUCHI
- Department of Materials Science, Faculty of Science, Kanagawa University
| | - Mizuo MAEDA
- Bioengineering Laboratory, Discovery Research Institute, RIKEN
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98
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Chaffey BT, Mitchell E, Birch MA, Lakey JH. A generic expression system to produce proteins that co-assemble with alkane thiol SAM. Int J Nanomedicine 2008; 3:287-93. [PMID: 18990938 PMCID: PMC2626940 DOI: 10.2147/ijn.s2655] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Surface biology aims to observe and control biological processes by combining bio-, surface, and physical chemistry. Self-assembled monolayers (SAM) on gold surfaces have provided excellent methods for nanoscale surface preparation for such studies. However, extension of this work requires the specific immobilization of whole protein domains and the direct incorporation of recombinant proteins into SAM is still problematic. In this study a short random coil peptide has been designed to insert into thioalkane layers by formation of a hydrophobic helix. Surface plasmon resonance (SPR) studies show that specific immobilization via the internal cysteine is achieved. Addition of the peptide sequence to the terminus of a protein at the genetic level enables the production of a range of recombinant fusion-proteins with good yield. SPR shows that the proteins display the same gold-binding behavior as the peptide. It is shown that cell growth control can be achieved by printing the proteins using soft lithography with subsequent infilling with thio-alkanes The expression plasmid is constructed so that any stable protein domain can be easily cloned, expressed, purified and immobilized.
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Affiliation(s)
| | | | - Mark A Birch
- The School of Surgical and Reproductive Sciences, The Medical School, Framlington Place, The University of Newcastle-upon-Tyne, Newcastle-upon-Tyne, Great Britain
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99
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Bioconjugation of zirconium uridine monophosphate: application to myoglobin direct electrochemistry. Biosens Bioelectron 2007; 23:1244-9. [PMID: 18180152 DOI: 10.1016/j.bios.2007.11.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2007] [Revised: 11/12/2007] [Accepted: 11/21/2007] [Indexed: 11/23/2022]
Abstract
Porous nano-granule of zirconium uridine monophosphate, Zr(UMP)2.H2O is, for the first time, synthesized under mild experimental conditions and applied to the bioconjugation of myoglobin (Mb) to realize its direct electron transfer. UV-vis and resonance Raman spectroscopies prove that Mb in the Zr(UMP)2.H2O film maintains its secondary structure similar to the native state. The conjugation film of the Mb-Zr(UMP)2.H2O on the glassy carbon (GC) electrode gives a well-defined and quasi-reversible cyclic voltammogram, which reflects the direct electron transfer of the heme Fe III/Fe II couple of Mb. On the basis of the satisfying bioelectrocatalysis of the nano-conjugation of Mb and genetic substrate, a kind of mediator-free biosensor for H2O2 is developed. The linear range for H2O2 detection is estimated to be 3.92-180.14 microM. The apparent Michaelis-Menten constant (Km) and the detection limit based on the signal-to-noise ratio of 3 are found to be 196.1 microM and 1.52 microM, respectively. Both the apparent Michaelis-Menten constant and the detection limit herein are much lower than currently reported values from other Mb films. This kind of sensor possesses excellent stability, long-term life (more than 20 days) and good reproducibility.
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