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Yang L, Hu J, Li MC, Xu M, Gu ZY. Solid-state nanopore: chemical modifications, interactions, and functionalities. Chem Asian J 2022; 17:e202200775. [PMID: 36071031 DOI: 10.1002/asia.202200775] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/06/2022] [Indexed: 11/08/2022]
Abstract
Nanopore technology is a burgeoning detection technology for single-molecular sensing and ion rectification. Solid-state nanopores have attracted more and more attention because of their higher stability and tunability than biological nanopores. However, solid-state nanopores still suffer the drawbacks of low signal-to-noise ratio and low resolution, which hinders their practical applications. Thus, developing operatical and useful methods to overcome the shortages of solid-state nanopores is urgently needed. Here, we summarize the recent research on nanopore modification to achieve this goal. Modifying solid-state nanopores with different coating molecules can improve the selectivity, sensitivity, and stability of nanopores. The modified molecules can introduce different functions into the nanopores, greatly expanding the applications of this novel detection technology. We hope that this review of nanopore modification will provide new ideas for this field.
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Affiliation(s)
- Lei Yang
- Nanjing Normal University, College of Chemistry and Materials Science, CHINA
| | - Jun Hu
- Nanjing Normal University, College of Chemistry and Materials Science, CHINA
| | - Min-Chao Li
- Nanjing Normal University, College of Chemistry and Materials Science, CHINA
| | - Ming Xu
- Nanjing Normal University, College of Chemistry and Materials Science, CHINA
| | - Zhi-Yuan Gu
- Nanjing Normal University, College of Chemistry and Materials Science, 1 Wenyuan Rd, 210023, Nanjing, CHINA
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2
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Abrao-Nemeir I, Zaki O, Meyer N, Lepoitevin M, Torrent J, Janot JM, Balme S. Combining ionic diode, resistive pulse and membrane for detection and separation of anti-CD44 antibody. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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3
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Ramírez-Carreto S, Miranda-Zaragoza B, Rodríguez-Almazán C. Actinoporins: From the Structure and Function to the Generation of Biotechnological and Therapeutic Tools. Biomolecules 2020; 10:E539. [PMID: 32252469 PMCID: PMC7226409 DOI: 10.3390/biom10040539] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/19/2020] [Accepted: 03/21/2020] [Indexed: 12/22/2022] Open
Abstract
Actinoporins (APs) are a family of pore-forming toxins (PFTs) from sea anemones. These biomolecules exhibit the ability to exist as soluble monomers within an aqueous medium or as constitutively open oligomers in biological membranes. Through their conformational plasticity, actinoporins are considered good candidate molecules to be included for the rational design of molecular tools, such as immunotoxins directed against tumor cells and stochastic biosensors based on nanopores to analyze unique DNA or protein molecules. Additionally, the ability of these proteins to bind to sphingomyelin (SM) facilitates their use for the design of molecular probes to identify SM in the cells. The immunomodulatory activity of actinoporins in liposomal formulations for vaccine development has also been evaluated. In this review, we describe the potential of actinoporins for use in the development of molecular tools that could be used for possible medical and biotechnological applications.
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Affiliation(s)
| | | | - Claudia Rodríguez-Almazán
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Cuernavaca, Morelos 62210, Mexico; (S.R.-C.); (B.M.-Z.)
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4
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Eggenberger OM, Ying C, Mayer M. Surface coatings for solid-state nanopores. NANOSCALE 2019; 11:19636-19657. [PMID: 31603455 DOI: 10.1039/c9nr05367k] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Since their introduction in 2001, solid-state nanopores have been increasingly exploited for the detection and characterization of biomolecules ranging from single DNA strands to protein complexes. A major factor that enables the application of nanopores to the analysis and characterization of a broad range of macromolecules is the preparation of coatings on the pore wall to either prevent non-specific adhesion of molecules or to facilitate specific interactions of molecules of interest within the pore. Surface coatings can therefore be useful to minimize clogging of nanopores or to increase the residence time of target analytes in the pore. This review article describes various coatings and their utility for changing pore diameters, increasing the stability of nanopores, reducing non-specific interactions, manipulating surface charges, enabling interactions with specific target molecules, and reducing the noise of current recordings through nanopores. We compare the coating methods with respect to the ease of preparing the coating, the stability of the coating and the requirement for specialized equipment to prepare the coating.
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Affiliation(s)
- Olivia M Eggenberger
- Adolphe Merkle Institute, Chemin des Verdiers 4, University of Fribourg, Fribourg, Switzerland.
| | - Cuifeng Ying
- Adolphe Merkle Institute, Chemin des Verdiers 4, University of Fribourg, Fribourg, Switzerland.
| | - Michael Mayer
- Adolphe Merkle Institute, Chemin des Verdiers 4, University of Fribourg, Fribourg, Switzerland.
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Eggenberger OM, Leriche G, Koyanagi T, Ying C, Houghtaling J, Schroeder TBH, Yang J, Li J, Hall A, Mayer M. Fluid surface coatings for solid-state nanopores: comparison of phospholipid bilayers and archaea-inspired lipid monolayers. NANOTECHNOLOGY 2019; 30:325504. [PMID: 30991368 DOI: 10.1088/1361-6528/ab19e6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In the context of sensing and characterizing single proteins with synthetic nanopores, lipid bilayer coatings provide at least four benefits: first, they minimize unwanted protein adhesion to the pore walls by exposing a zwitterionic, fluid surface. Second, they can slow down protein translocation and rotation by the opportunity to tether proteins with a lipid anchor to the fluid bilayer coating. Third, they provide the possibility to impart analyte specificity by including lipid anchors with a specific receptor or ligand in the coating. Fourth, they offer a method for tuning nanopore diameters by choice of the length of the lipid's acyl chains. The work presented here compares four properties of various lipid compositions with regard to their suitability as nanopore coatings for protein sensing experiments: (1) electrical noise during current recordings through solid-state nanopores before and after lipid coating, (2) long-term stability of the recorded current baseline and, by inference, of the coating, (3) viscosity of the coating as quantified by the lateral diffusion coefficient of lipids in the coating, and (4) the success rate of generating a suitable coating for quantitative nanopore-based resistive pulse recordings. We surveyed lipid coatings prepared from bolaamphiphilic, monolayer-forming lipids inspired by extremophile archaea and compared them to typical bilayer-forming phosphatidylcholine lipids containing various fractions of curvature-inducing lipids or cholesterol. We found that coatings from archaea-inspired lipids provide several advantages compared to conventional phospholipids; the stable, low noise baseline qualities and high viscosity make these membranes especially suitable for analysis that estimates physical protein parameters such as the net charge of proteins as they enable translocation events with sufficiently long duration to time-resolve dwell time distributions completely. The work presented here reveals that the ease or difficulty of coating a nanopore with lipid membranes did not depend significantly on the composition of the lipid mixture, but rather on the geometry and surface chemistry of the nanopore in the solid state substrate. In particular, annealing substrates containing the nanopore increased the success rate of generating stable lipid coatings.
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6
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A novel microfluidic resistive pulse sensor with multiple voltage input channels and a side sensing gate for particle and cell detection. Anal Chim Acta 2019; 1052:113-123. [DOI: 10.1016/j.aca.2018.11.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 11/26/2018] [Indexed: 01/13/2023]
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7
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Das PK. DNA translocation through polyelectrolyte modified hairy nanopores. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.06.068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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8
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Lepoitevin M, Bechelany M, Balanzat E, Janot JM, Balme S. Non-Fluorescence label protein sensing with track-etched nanopore decorated by avidin/biotin system. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.06.079] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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9
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Effect of Pore Geometry on Resistive-Pulse Sensing of DNA Using Track-Etched PET Nanopore Membrane. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.04.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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10
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Kececi K, San N, Kaya D. Nanopore detection of double stranded DNA using a track-etched polycarbonate membrane. Talanta 2015; 144:268-74. [DOI: 10.1016/j.talanta.2015.06.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 05/31/2015] [Accepted: 06/03/2015] [Indexed: 10/23/2022]
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11
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Digital quantification of rolling circle amplified single DNA molecules in a resistive pulse sensing nanopore. Biosens Bioelectron 2015; 67:11-7. [DOI: 10.1016/j.bios.2014.06.040] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Revised: 06/17/2014] [Accepted: 06/19/2014] [Indexed: 01/20/2023]
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12
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Song Y, Yang J, Pan X, Li D. High-throughput and sensitive particle counting by a novel microfluidic differential resistive pulse sensor with multidetecting channels and a common reference channel. Electrophoresis 2015; 36:495-501. [DOI: 10.1002/elps.201400427] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 10/25/2014] [Accepted: 10/27/2014] [Indexed: 01/27/2023]
Affiliation(s)
- Yongxin Song
- Department of Marine Engineering; Dalian Maritime University; Dalian China
| | - Jiandong Yang
- Department of Marine Engineering; Dalian Maritime University; Dalian China
| | - Xinxiang Pan
- Department of Marine Engineering; Dalian Maritime University; Dalian China
| | - Dongqing Li
- Department of Mechanical and Mechatronics Engineering; University of Waterloo; Waterloo Canada
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13
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Cabello-Aguilar S, Chaaya AA, Bechelany M, Pochat-Bohatier C, Balanzat E, Janot JM, Miele P, Balme S. Dynamics of polymer nanoparticles through a single artificial nanopore with a high-aspect-ratio. SOFT MATTER 2014; 10:8413-8419. [PMID: 25204833 DOI: 10.1039/c4sm00392f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The development of nanometric Coulter counters for nanoparticle detection is an attractive and promising field of research. In this work, we have studied the influence of the nanopore surface state on charged polymer nanoparticle translocations. To make this, the translocation of carboxylate modified polystyrene microspheres (diameter 40, 70 and 100 nm) has been investigated through two kinds of high aspect ratio nanopores (negative and uncharged). The latter were tailored by a single track-etched and atomic layer deposition technique. It was shown that the mobility and the energy barrier are strongly dependent on nanopore surface charge. Typically if the latter exhibits negative surface charge, the microsphere mobility increases and the global energy barrier of entrance inside the nanopore decreases with its diameter, converse to the uncharged nanopore.
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Affiliation(s)
- Simon Cabello-Aguilar
- Institut Européen des Membranes, UMR5635 CNRS-UM2-ENSCM, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France.
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Adela Booth M, Vogel R, Curran JM, Harbison S, Travas-Sejdic J. Detection of target-probe oligonucleotide hybridization using synthetic nanopore resistive pulse sensing. Biosens Bioelectron 2013; 45:136-40. [DOI: 10.1016/j.bios.2013.01.044] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Revised: 01/08/2013] [Accepted: 01/24/2013] [Indexed: 01/23/2023]
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15
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16
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Research Progress in Application of Nanomaterial for Deoxyribonucleic Acid Detection. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2012. [DOI: 10.3724/sp.j.1096.2011.00146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Yeh LH, Zhang M, Qian S, Hsu JP. Regulating DNA translocation through functionalized soft nanopores. NANOSCALE 2012; 4:2685-93. [PMID: 22422141 DOI: 10.1039/c2nr30102d] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Nanopores have emerged as promising next-generation devices for DNA sequencing technology. The two major challenges in such devices are: (i) find an efficient way to raise the DNA capture rate prior to funnelling a nanopore, and (ii) reduce the translocation velocity inside it so that single base resolution can be attained efficiently. To achieve these, a novel soft nanopore comprising a solid-state nanopore and a functionalized soft layer is proposed to regulate the DNA electrokinetic translocation. We show that, in addition to the presence of an electroosmotic flow (EOF), which reduces the DNA translocation velocity, counterion concentration polarization (CP) occurs near the entrance of the nanopore. The latter establishes an enrichment of the counterion concentration field, thereby electrostatically enhancing the capture rate. The dependence of the ionic current on the bulk salt concentration, the soft layer properties, and the length of the nanopore are investigated. We show that if the salt concentration is low, the ionic current depends largely upon the length of the nanopore, and the density of the fixed charge of the soft layer, but not upon its degree of softness. On the other hand, if it is high, ionic current blockade always occurs, regardless of the levels of the other parameters. The proposed soft nanopore is capable of enhancing the performance of DNA translocation while maintaining its basic signature of the ionic current at high salt concentration. The results gathered provide the necessary information for designing devices used in DNA sequencing.
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Affiliation(s)
- Li-Hsien Yeh
- Institute of Micro/Nanotechnology, Old Dominion University, Norfolk, VA 23529, USA
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18
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Krawczyk BM, Baltrusaitis J, Yoder CM, Vargo TG, Bowden NB, Kader KN. Radio frequency glow discharge-induced acidification of fluoropolymers. J Biomed Mater Res A 2011; 99:418-25. [PMID: 21887736 DOI: 10.1002/jbm.a.33173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Revised: 04/13/2011] [Accepted: 04/29/2011] [Indexed: 11/12/2022]
Abstract
Fluoropolymer surfaces are unique in view of the fact that they are quite inert, have low surface energies, and possess high thermal stabilities. Attempts to modify fluoropolymer surfaces have met with difficulties in that it is difficult to control the modification to maintain bulk characteristics of the polymer. In a previously described method, the replacement of a small fraction of surface fluorine by acid groups through radio frequency glow discharge created a surface with unexpected reactivity allowing for attachment of proteins in their active states. The present study demonstrates that 1-ethyl-3-[3-dimethylaminopropyl] carbodiimide hydrochloride (EDC) reacts with the acid groups on fluoropolymer surfaces in a novel reaction not previously described. This reaction yields an excellent leaving group in which a primary amine on proteins can substitute to form a covalent bond between a protein and these surfaces. In an earlier study, we demonstrated that collagen IV could be deposited on a modified PTFE surface using EDC as a linker. Once collagen IV is attached to the surface, it assembles to form a functional stratum resembling collagen IV in native basement membrane. In this study, we show data suggesting that the fluorine to carbon ratio determines the acidity of the fluoropolymer surfaces and how well collagen IV attaches to and assembles on four different fluoropolymer surfaces.
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Affiliation(s)
- Benjamin M Krawczyk
- Cell and Synthetic Interface Engineering Laboratory, Department of Biomedical Engineering, University of Iowa, Iowa City, Iowa 52242, USA
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Feng J, Zhao W, Su B, Wu J. A label-free optical sensor based on nanoporous gold arrays for the detection of oligodeoxynucleotides. Biosens Bioelectron 2011; 30:21-7. [PMID: 21925859 DOI: 10.1016/j.bios.2011.08.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2011] [Revised: 08/16/2011] [Accepted: 08/16/2011] [Indexed: 11/15/2022]
Abstract
Interest in using nanoporous materials for sensing applications has increased. The present study reports a method of preparing well-ordered nanoporous gold arrays using a porous silicon (PSi) template. Gold nanolayer could be electrodeposited on the surface of the PSi template at low electrolysis currents in low concentration of chloroauric acid (HAuCl(4)) solution. Surface morphology characterizations and optical measurements revealed that a PSi-templated nanoporous gold (Au-PSi) array well replicated the nanoporous structure and retained the optical properties of PSi. Fourier transform reflectometric interference spectra showed that a characteristic blue-shifted effective optical thickness (EOT) was observed due to the low refractive index of the gold film. An optical DNA biosensor was then fabricated via the self-assembly of single-stranded DNA (ssDNA) with a specific sequence on the surface of Au-PSi. The attachment of ssDNA and its hybridization with target oligonucleotides (ODNs) persistently caused the blue shift of the EOT. Consequently, a relationship between the EOT shift and the ODN concentration was established. The mechanism of the optical response caused by DNA hybridization on the Au-PSi surface was qualitatively explained by the electromagnetic theory and electrochemical impedance spectroscopy (EIS). The lowest detection limit for target ODNs was estimated at around 10(-14) mol L(-1), when the baseline noise, a variation in the value of EOT is around 5 nm. The fabricated Au-PSi based optical biosensor has potential use in the discovery of new ODN drugs because it will be able to detect the binding event between ODNs and the target DNA.
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Affiliation(s)
- Jiandong Feng
- Institute of Microanalytical System, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
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20
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Vilozny B, Actis P, Seger RA, Pourmand N. Dynamic control of nanoprecipitation in a nanopipette. ACS NANO 2011; 5:3191-3197. [PMID: 21413733 PMCID: PMC3082981 DOI: 10.1021/nn200320b] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Accepted: 03/17/2011] [Indexed: 05/26/2023]
Abstract
Studying the earliest stages of precipitation at the nanoscale is technically challenging but quite valuable as such phenomena reflect important processes such as crystallization and biomineralization. Using a quartz nanopipette as a nanoreactor, we induced precipitation of an insoluble salt to generate oscillating current blockades. The reversible process can be used to measure both kinetics of precipitation and relative size of the resulting nanoparticles. Counter ions for the highly water-insoluble salt zinc phosphate were separated by the pore of a nanopipette and a potential applied to cause ion migration to the interface. By analyzing the kinetics of pore blockage, two distinct mechanisms were identified: a slower process due to precipitation from solution, and a faster process attributed to voltage-driven migration of a trapped precipitate. We discuss the potential of these techniques in studying precipitation dynamics, trapping particles within a nanoreactor, and electrical sensors based on nanoprecipitation.
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Affiliation(s)
- Boaz Vilozny
- Department of Biomolecular Engineering, University of California Santa Cruz, 1156 High Street, Santa Cruz, California 95064, United States
- Advanced Studies Laboratories, UC Santa Cruz and NASA Ames Research Center, Moffett Field, California 94035, United States
| | - Paolo Actis
- Department of Biomolecular Engineering, University of California Santa Cruz, 1156 High Street, Santa Cruz, California 95064, United States
- Advanced Studies Laboratories, UC Santa Cruz and NASA Ames Research Center, Moffett Field, California 94035, United States
- Department of Biology, Texas Southern University, 3100 Cleburne Street, Houston, Texas 77004, United States
| | - R. Adam Seger
- Department of Biomolecular Engineering, University of California Santa Cruz, 1156 High Street, Santa Cruz, California 95064, United States
- Advanced Studies Laboratories, UC Santa Cruz and NASA Ames Research Center, Moffett Field, California 94035, United States
| | - Nader Pourmand
- Department of Biomolecular Engineering, University of California Santa Cruz, 1156 High Street, Santa Cruz, California 95064, United States
- Advanced Studies Laboratories, UC Santa Cruz and NASA Ames Research Center, Moffett Field, California 94035, United States
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21
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HONG M, ZHU J, YIN HD. Research Progress in Application of Nanomaterials for Deoxyribonucleic Acid Detection. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2011. [DOI: 10.1016/s1872-2040(10)60412-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Sa N, Fu Y, Baker LA. Reversible cobalt ion binding to imidazole-modified nanopipettes. Anal Chem 2010; 82:9963-6. [PMID: 21090777 DOI: 10.1021/ac102619j] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this report, we demonstrate that quartz nanopipettes modified with an imidazole-terminated silane respond to metal ions (Co(2+)) in solution. The response of nanopipettes is evaluated through examination of the ion current rectification ratio. When nanopipettes are cycled between solutions of different pH, adsorbed Co(2+) can be released from the nanopipette surface, to regenerate binding sites of the nanopipette. These results demonstrate that rectification-based sensing strategies for nanopore sensors can benefit from selection of recognition elements with intermediate binding affinities, such that reversible responses can be attained.
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Basore JR, Lavrik NV, Baker LA. Single-pore membranes gated by microelectromagnetic traps. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:2759-2763. [PMID: 20408136 DOI: 10.1002/adma.201000566] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Affiliation(s)
- Joseph R Basore
- Department of Chemistry, Indiana University, Bloomington, IN 47405, USA
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24
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Choi CK, Fowlkes JD, Retterer ST, Siuti P, Iyer S, Doktycz MJ. Surface charge- and space-dependent transport of proteins in crowded environments of nanotailored posts. ACS NANO 2010; 4:3345-55. [PMID: 20515056 PMCID: PMC2892340 DOI: 10.1021/nn901831q] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The reaction and diffusion of molecules across barriers and through crowded environments is integral to biological system function and to separation technologies. Ordered, microfabricated post arrays are a promising route to creating synthetic barriers with controlled chemical and physical characteristics. They can be used to create crowded environments, to mimic aspects of cellular membranes, and to serve as engineered replacements of polymer-based separation media. Here, the translational diffusion of fluorescein isothiocyante and various forms of green fluorescent protein (GFP), including "supercharged" variants, are examined in a silicon-based post array environment. The technique of fluorescence recovery after photobleaching (FRAP) is combined with analytical approximations and numerical simulations to assess the relative effects of reaction and diffusion on molecular transport, respectively. FRAP experiments were conducted for 64 different cases where the molecular species, the density of the posts, and the chemical surface charge of the posts were varied. In all cases, the dense packing of the posts hindered the diffusive transport of the fluorescent species. The supercharged GFPs strongly interacted with oppositely charged surfaces. With similar molecular and surface charges, transport is primarily limited by hindered diffusion. For conventional, enhanced GFP in a positively charged surface environment, transport was limited by the coupled action of hindered diffusion and surface interaction with the posts. Quantification of the size-, space-, time-, and charge-dependent translational diffusion in the post array environments can provide insight into natural processes and guide the design and development of selective membrane systems.
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Affiliation(s)
- Chang Kyoung Choi
- Mechanical Engineering-Engineering Mechanics, Michigan Technological University, Houghton, MI 49931-1295
| | - Jason D. Fowlkes
- Center for Nanoscale Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831
| | - Scott T. Retterer
- Center for Nanoscale Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
| | - Piro Siuti
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
- Graduate Program in Genome Science and Technology, University of Tennessee, Knoxville, TN 37996
| | - Sukanya Iyer
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
- Graduate Program in Genome Science and Technology, University of Tennessee, Knoxville, TN 37996
| | - Mitchel J. Doktycz
- Center for Nanoscale Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
- Graduate Program in Genome Science and Technology, University of Tennessee, Knoxville, TN 37996
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25
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Sexton LT, Mukaibo H, Katira P, Hess H, Sherrill SA, Horne LP, Martin CR. An Adsorption-Based Model for Pulse Duration in Resistive-Pulse Protein Sensing. J Am Chem Soc 2010; 132:6755-63. [DOI: 10.1021/ja100693x] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lindsay T. Sexton
- Department of Chemistry and Center for Research at the Bio/Nano Interface, University of Florida, Gainesville, Florida 32611-7200, Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611-6400, Department of Biomedical Engineering, Columbia University, New York, New York 10027, and Department of Chemistry, University of Maryland, College Park, Maryland 20742
| | - Hitomi Mukaibo
- Department of Chemistry and Center for Research at the Bio/Nano Interface, University of Florida, Gainesville, Florida 32611-7200, Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611-6400, Department of Biomedical Engineering, Columbia University, New York, New York 10027, and Department of Chemistry, University of Maryland, College Park, Maryland 20742
| | - Parag Katira
- Department of Chemistry and Center for Research at the Bio/Nano Interface, University of Florida, Gainesville, Florida 32611-7200, Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611-6400, Department of Biomedical Engineering, Columbia University, New York, New York 10027, and Department of Chemistry, University of Maryland, College Park, Maryland 20742
| | - Henry Hess
- Department of Chemistry and Center for Research at the Bio/Nano Interface, University of Florida, Gainesville, Florida 32611-7200, Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611-6400, Department of Biomedical Engineering, Columbia University, New York, New York 10027, and Department of Chemistry, University of Maryland, College Park, Maryland 20742
| | - Stefanie A. Sherrill
- Department of Chemistry and Center for Research at the Bio/Nano Interface, University of Florida, Gainesville, Florida 32611-7200, Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611-6400, Department of Biomedical Engineering, Columbia University, New York, New York 10027, and Department of Chemistry, University of Maryland, College Park, Maryland 20742
| | - Lloyd P. Horne
- Department of Chemistry and Center for Research at the Bio/Nano Interface, University of Florida, Gainesville, Florida 32611-7200, Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611-6400, Department of Biomedical Engineering, Columbia University, New York, New York 10027, and Department of Chemistry, University of Maryland, College Park, Maryland 20742
| | - Charles R. Martin
- Department of Chemistry and Center for Research at the Bio/Nano Interface, University of Florida, Gainesville, Florida 32611-7200, Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611-6400, Department of Biomedical Engineering, Columbia University, New York, New York 10027, and Department of Chemistry, University of Maryland, College Park, Maryland 20742
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Bouchet A, Descamps E, Mailley P, Livache T, Chatelain F, Haguet V. Contactless electrofunctionalization of a single pore. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2009; 5:2297-2303. [PMID: 19588464 DOI: 10.1002/smll.200900482] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Customized pores are smart components that find challenging applications in a variety of fields including purification membranes and biosensing systems. The incorporation of recognition probes within pores is therefore a challenge, due to the technical difficulty of delimiting the area functionalized and obtaining the localized, specific chemical modification of pore walls. An innovative approach, named contactless electrofunctionalization (CLEF), is presented to overcome this problem. CLEF allows easy, one-step modification of the inner surface of a pore etched in a dielectric membrane. The pore wall is coated under the influence of an electric field created by the application of a voltage between two electrodes, located near but not in contact with the pore openings. This specific localization of the deposited material within the pore is extremely rapid. Coatings were reliably and reproducibly obtained using polypyrrole co-polymers bearing oligonucleotides, demonstrating that this technology has a promising future in the design of biosensors. Moreover, the versatility of this process allows the deposition of various electroactive entities such as iridium oxide and therefore indicates a strong potential for diverse applications involving porous materials.
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Affiliation(s)
- Aurélie Bouchet
- Commissariat à l'Energie Atomique IRTSV, Laboratoire Biopuces, 38054 Grenoble Cedex 9, France.
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