1
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Gaines D, Brodsky E, Kaur H, Nestorova GG. RNA capture pin technology: investigating long-term stability and mRNA purification specificity of oligonucleotide immobilization on gold and streptavidin surfaces. Anal Bioanal Chem 2023; 415:6077-6089. [PMID: 37516691 DOI: 10.1007/s00216-023-04882-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 07/16/2023] [Accepted: 07/24/2023] [Indexed: 07/31/2023]
Abstract
Advancing biomedical studies necessitates the development of cutting-edge technologies for the rapid extraction of nucleic acid. We characterized an RNA capture pin (RCP) tool that is non-destructive to the sample and enables rapid purification and enrichment of mRNA for subsequent genetic analysis. At the core of this technology is a pin (200 µm × 3 cm) functionalized with dT15 capture sequences that hybridize to mRNA within 2 min of insertion in the specimen. Two methods for immobilizing the oligos on the surface of the RCPs were investigated: gold-thiol and biotin-streptavidin. The RNA capture efficiency of the RCPs was assessed using a radish plant. The average reverse transcription-quantitative polymerase chain reaction (RT-qPCR) cycle amplification values were 19.93 and 24.84 for gold- and streptavidin-coated pins, respectively. The amount of RNA present on the surface of the probes was measured using the Agilent 2100 Bioanalyzer. RNA sequencing was performed to determine the mRNA selectivity of the RNA capture pin. Gene read count analysis confirmed that the RNA purified via the gold-plated RCPs contained 70% messenger RNA, 10% ribosomal RNA, and 20% non-coding RNA. The long-term stability of the bond between the dT15 oligos and the surface of the RCPs was assessed over 4 months. A significant decrease in the dT15 surface coverage of the streptavidin-coated RCPs was observed after 2 weeks of storage at 4 °C. The gold-thiol RNA capture pins exhibited a retention rate of 40% of the oligos after 4 months of storage.
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Affiliation(s)
- Deriesha Gaines
- Molecular Sciences and Nanotechnology, Louisiana Tech University, Ruston, LA, USA
| | | | | | - Gergana G Nestorova
- School of Biological Sciences, Louisiana Tech University, 1 Adams Blvd., Ruston, LA, 71272, USA.
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2
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Agrawal AK, Ninawe A, Dhawan A. Nanostructured plasmonic chips employing nanopillar and nanoring hole arrays for enhanced sensitivity of SPR-based biosensing. RSC Adv 2021; 12:929-938. [PMID: 35425128 PMCID: PMC8978836 DOI: 10.1039/d1ra07937a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 12/12/2021] [Indexed: 01/12/2023] Open
Abstract
We present a theoretical analysis of the different nanostructured plasmonic sensor chips-consisting of plasmonic nanostructures present on the surface of plasmonic thin films-interrogated using the Kretschmann configuration for highly sensitive localized sensing, with high tunability from the visible to the infrared regions. Rigorous coupled-wave analysis is performed to analyze all the proposed nanostructured sensor chips and compare their sensing performance. The sensitivity parameters are defined to focus on the detection of a thin layer of biomolecules on the surface of nanostructures. The dimensions of the nanostructures and the incident angle shift the plasmon resonance wavelengths and can be used to tune the operating wavelength. The nanostructured films create local regions of high electric fields, which results in enhanced sensitivity of the proposed structures. The proposed sensors can be used in surface plasmon resonance imaging to detect multiple biomolecules in a single measurement. An extremely high surface sensitivity and figure of merit (FOMS) of 91 nm nm-1 and 0.59 nm-1 has been found, respectively, for one of the proposed nanostructured sensing platforms. Moreover, we demonstrate a very high differential reflectance of 55% per nm thickness of the biolayer.
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Affiliation(s)
- Ajay Kumar Agrawal
- Department of Electrical Engineering, Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India
| | - Akanksha Ninawe
- Department of Electrical Engineering, Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India
| | - Anuj Dhawan
- Department of Electrical Engineering, Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India
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3
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Oswald E, Gaus AL, Kund J, Küllmer M, Romer J, Weizenegger S, Ullrich T, Mengele AK, Petermann L, Leiter R, Unwin PR, Kaiser U, Rau S, Kahnt A, Turchanin A, von Delius M, Kranz C. Cobaloxime Complex Salts: Synthesis, Patterning on Carbon Nanomembranes and Heterogeneous Hydrogen Evolution Studies. Chemistry 2021; 27:16896-16903. [PMID: 34713512 PMCID: PMC9299159 DOI: 10.1002/chem.202102778] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Indexed: 12/26/2022]
Abstract
Cobaloximes are promising, earth‐abundant catalysts for the light‐driven hydrogen evolution reaction (HER). Typically, these cobalt(III) complexes are prepared in situ or employed in their neutral form, for example, [Co(dmgH)2(py)Cl], even though related complex salts have been reported previously and could, in principle, offer improved catalytic activity as well as more efficient immobilization on solid support. Herein, we report an interdisciplinary investigation into complex salts [Co(dmgH)2(py)2]+[Co(dmgBPh2)2Cl2]−, TBA+[Co(dmgBPh2)2Cl2]-
and [Co(dmgH)2(py)2]+BArF−. We describe their strategic syntheses from the commercially available complex [Co(dmgH)2(py)Cl] and demonstrate that these double and single complex salts are potent catalysts for the light‐driven HER. We also show that scanning electrochemical cell microscopy can be used to deposit arrays of catalysts [Co(dmgH)2(py)2]+[Co(dmgBPh2)2Cl2]−, TBA+[Co(dmgBPh2)2Cl2]-
and [Co(dmgH)2(py)Cl] on supported and free‐standing amino‐terminated ∼1‐nm‐thick carbon nanomembranes (CNMs). Photocatalytic H2 evolution at such arrays was quantified with Pd microsensors by scanning electrochemical microscopy, thus providing a new approach for catalytic evaluation and opening up novel routes for the creation and analysis of “designer catalyst arrays”, nanoprinted in a desired pattern on a solid support.
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Affiliation(s)
- Eva Oswald
- Institute of Analytical and Bioanalytical Chemistry, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Anna-Laurine Gaus
- Institute of Organic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Julian Kund
- Institute of Analytical and Bioanalytical Chemistry, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Maria Küllmer
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Lessingstrasse 10, 07743, Jena, Germany
| | - Jan Romer
- Institute of Analytical and Bioanalytical Chemistry, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Simon Weizenegger
- Institute of Organic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Tobias Ullrich
- Department of Chemistry and Pharmacy, Friedrich Alexander University Erlangen-Nürnberg, Egerlandstrasse 3, 91058, Erlangen, Germany
| | - Alexander K Mengele
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Lydia Petermann
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Robert Leiter
- Central Facility Electron Microscopy, Materials Science Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Patrick R Unwin
- Department of Chemistry, University of Warwick, Gibbet Hill Road, CV4 7AL, Coventry, UK
| | - Ute Kaiser
- Central Facility Electron Microscopy, Materials Science Electron Microscopy, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Sven Rau
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Axel Kahnt
- Leibniz-Institute of Surface Engineering (IOM), Permoserstrasse 15, 04318, Leipzig, Germany
| | - Andrey Turchanin
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Lessingstrasse 10, 07743, Jena, Germany
| | - Max von Delius
- Institute of Organic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Christine Kranz
- Institute of Analytical and Bioanalytical Chemistry, Albert-Einstein-Allee 11, 89081, Ulm, Germany
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4
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Chiodi E, Marn AM, Geib MT, Ünlü MS. The Role of Surface Chemistry in the Efficacy of Protein and DNA Microarrays for Label-Free Detection: An Overview. Polymers (Basel) 2021; 13:1026. [PMID: 33810267 PMCID: PMC8036480 DOI: 10.3390/polym13071026] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 03/23/2021] [Accepted: 03/23/2021] [Indexed: 01/04/2023] Open
Abstract
The importance of microarrays in diagnostics and medicine has drastically increased in the last few years. Nevertheless, the efficiency of a microarray-based assay intrinsically depends on the density and functionality of the biorecognition elements immobilized onto each sensor spot. Recently, researchers have put effort into developing new functionalization strategies and technologies which provide efficient immobilization and stability of any sort of molecule. Here, we present an overview of the most widely used methods of surface functionalization of microarray substrates, as well as the most recent advances in the field, and compare their performance in terms of optimal immobilization of the bioreceptor molecules. We focus on label-free microarrays and, in particular, we aim to describe the impact of surface chemistry on two types of microarray-based sensors: microarrays for single particle imaging and for label-free measurements of binding kinetics. Both protein and DNA microarrays are taken into consideration, and the effect of different polymeric coatings on the molecules' functionalities is critically analyzed.
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Affiliation(s)
- Elisa Chiodi
- Department of Electrical Engineering, Boston University, Boston, MA 02215, USA; (A.M.M.); (M.T.G.); (M.S.Ü.)
| | - Allison M. Marn
- Department of Electrical Engineering, Boston University, Boston, MA 02215, USA; (A.M.M.); (M.T.G.); (M.S.Ü.)
| | - Matthew T. Geib
- Department of Electrical Engineering, Boston University, Boston, MA 02215, USA; (A.M.M.); (M.T.G.); (M.S.Ü.)
| | - M. Selim Ünlü
- Department of Electrical Engineering, Boston University, Boston, MA 02215, USA; (A.M.M.); (M.T.G.); (M.S.Ü.)
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
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5
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Moulahoum H, Ghorbanizamani F, Zihnioglu F, Turhan K, Timur S. How should diagnostic kits development adapt quickly in COVID 19-like pandemic models? Pros and cons of sensory platforms used in COVID-19 sensing. Talanta 2021; 222:121534. [PMID: 33167242 PMCID: PMC7423517 DOI: 10.1016/j.talanta.2020.121534] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 08/08/2020] [Indexed: 01/08/2023]
Abstract
As COVID-19 has reached pandemic status and the number of cases continues to grow, widespread availability of diagnostic testing is critical in helping identify and control the emergence of this rapidly spreading and serious illness. However, a lacking in making a quick reaction to the threat and starting early development of diagnostic sensing tools has had an important impact globally. In this regard, here we will review critically the current developed diagnostic tools in response to the COVID-19 pandemic and compare the different types through the discussion of their pros and cons such as nucleic acid detection tests (including PCR and CRISPR), antibody and protein-based diagnosis tests. In addition, potential technologies that are under development such as on-site diagnosis platforms, lateral flow, and portable PCR units are discussed. Data collection and epidemiological analysis could also be an interesting factor to incorporate with the emerging technologies especially with the wide access to smartphones. Lastly, a SWOT analysis and perspectives on how the development of novel sensory platforms should be treated by the different decision-makers are analyzed.
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Affiliation(s)
- Hichem Moulahoum
- Biochemistry Department, Faculty of Sciences, Ege University, 35100, Bornova, Izmir, Turkey.
| | - Faezeh Ghorbanizamani
- Biochemistry Department, Faculty of Sciences, Ege University, 35100, Bornova, Izmir, Turkey
| | - Figen Zihnioglu
- Biochemistry Department, Faculty of Sciences, Ege University, 35100, Bornova, Izmir, Turkey
| | - Kutsal Turhan
- Department of Thoracic Surgery, Faculty of Medicine, Ege University, 35100, Bornova, Izmir, Turkey
| | - Suna Timur
- Biochemistry Department, Faculty of Sciences, Ege University, 35100, Bornova, Izmir, Turkey; Central Research Test and Analysis Laboratory Application and Research Center, Ege University, 35100, Bornova, Izmir, Turkey.
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6
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A critical review: Recent advances in "digital" biomolecule detection with single copy sensitivity. Biosens Bioelectron 2021; 177:112901. [PMID: 33472132 PMCID: PMC7836387 DOI: 10.1016/j.bios.2020.112901] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 12/08/2020] [Accepted: 12/10/2020] [Indexed: 02/06/2023]
Abstract
Detection of a single biomolecule, ranging from nucleic acids, proteins, viruses to bacteria, is of paramount importance in various fields including biology, environment, food and agriculture industry, public health, and medicine. With the understanding of the biological functions of these biomolecules (or bioparticles) and their impacts on public health, environmental pollution, and food safety, advanced detection techniques are unprecedentedly demanded for their early and/or sensitive detection. In this critical review, a series of elegant research about digital detection of biomolecules with potential single copy sensitivity is reviewed and summarized with the focus on the design principle and the innovation of how to accomplish the “digital” detection concept. Starting with a brief introduction on the importance of digital detection, recent advances in “digital” biomolecule detection with single copy sensitivity are grouped and discussed based on the difference of signal reporting systems, including surrogate signal development for “digital” detection, direct visualization for “digital” detection, and nucleic acid amplification enabled “digital” detection. Interdisciplinary combination and integration of different cutting-edge techniques are also discussed with details. The review is closed with the conclusion and future trends.
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7
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Wang D, Loo JFC, Chen J, Yam Y, Chen SC, He H, Kong SK, Ho HP. Recent Advances in Surface Plasmon Resonance Imaging Sensors. SENSORS 2019; 19:s19061266. [PMID: 30871157 PMCID: PMC6471112 DOI: 10.3390/s19061266] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 02/22/2019] [Accepted: 02/26/2019] [Indexed: 12/12/2022]
Abstract
The surface plasmon resonance (SPR) sensor is an important tool widely used for studying binding kinetics between biomolecular species. The SPR approach offers unique advantages in light of its real-time and label-free sensing capabilities. Until now, nearly all established SPR instrumentation schemes are based on single- or several-channel configurations. With the emergence of drug screening and investigation of biomolecular interactions on a massive scale these days for finding more effective treatments of diseases, there is a growing demand for the development of high-throughput 2-D SPR sensor arrays based on imaging. The so-called SPR imaging (SPRi) approach has been explored intensively in recent years. This review aims to provide an up-to-date and concise summary of recent advances in SPRi. The specific focuses are on practical instrumentation designs and their respective biosensing applications in relation to molecular sensing, healthcare testing, and environmental screening.
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Affiliation(s)
- Dongping Wang
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Hong Kong, China.
| | - Jacky Fong Chuen Loo
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, China.
- Biochemistry Programme, School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China.
| | - Jiajie Chen
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, China.
| | - Yeung Yam
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Hong Kong, China.
| | - Shih-Chi Chen
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Hong Kong, China.
| | - Hao He
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Siu Kai Kong
- Biochemistry Programme, School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China.
| | - Ho Pui Ho
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, China.
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8
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Multiplexed assessment of the surface density of DNA probes on DNA microarrays by surface plasmon resonance imaging. Anal Chim Acta 2019; 1047:131-138. [DOI: 10.1016/j.aca.2018.09.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 09/13/2018] [Accepted: 09/20/2018] [Indexed: 11/18/2022]
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9
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Chen CY, Li HH, Chu HY, Wang CM, Chang CW, Lin LE, Hsu CC, Liao WS. Finely Tunable Surface Wettability by Two-Dimensional Molecular Manipulation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:41814-41823. [PMID: 30412374 DOI: 10.1021/acsami.8b16424] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Local molecular environment governs material interface properties, especially the substrate's exposing behavior and overall functionality expression. Although current techniques can provide efficient surface property modification, challenges in molecule spatial distribution and composition controls limited the generation of homogeneous and finely tunable molecular environment. In this study, Au-thiolate rupturing operation in chemical lift-off lithography (CLL) is used to manipulate the substrate interface molecular environment. The creation of randomly distributed artificial self-assembled monolayer defects generates vacancies for substrate property modification through back-insertion of molecules with opposite functionalities. Surface wettability adjustment is utilized as an example, where well-controllable molecule distribution provides finely tunable substrate affinity toward liquids with different physical properties. The distinct property difference between two surface regions assists microdroplet formation when liquids flow through, not only water solution but also low-surface-tension organic liquids. These microdroplet arrays become a template to guide material assembly in its formation process and act as pH-sensitive platforms for high-throughput detection. Furthermore, the tunability of the molecular pattern in this approach helps minimize the coffee-ring effect and the sweet-spot issue in matrix-assisted laser desorption/ionization mass spectrometry. Two-dimensional molecular manipulation in the CLL operation, therefore, holds the capability toward controlling homogeneous material surface property and toward exhibiting behavior adjustments.
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Affiliation(s)
- Chong-You Chen
- Department of Chemistry , National Taiwan University , Taipei 10617 , Taiwan
| | - Hsiang-Hua Li
- Department of Chemistry , National Taiwan University , Taipei 10617 , Taiwan
| | - Hsiao-Yuan Chu
- Department of Chemistry , National Taiwan University , Taipei 10617 , Taiwan
| | - Chang-Ming Wang
- Department of Chemistry , National Taiwan University , Taipei 10617 , Taiwan
| | - Che-Wei Chang
- Department of Chemistry , National Taiwan University , Taipei 10617 , Taiwan
| | - Li-En Lin
- Department of Chemistry , National Taiwan University , Taipei 10617 , Taiwan
| | - Cheng-Chih Hsu
- Department of Chemistry , National Taiwan University , Taipei 10617 , Taiwan
| | - Wei-Ssu Liao
- Department of Chemistry , National Taiwan University , Taipei 10617 , Taiwan
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10
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Migliozzi D, Guibentif T. Assessing the Potential Deployment of Biosensors for Point-of-Care Diagnostics in Developing Countries: Technological, Economic and Regulatory Aspects. BIOSENSORS 2018; 8:E119. [PMID: 30501052 PMCID: PMC6316672 DOI: 10.3390/bios8040119] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 11/16/2018] [Accepted: 11/27/2018] [Indexed: 02/07/2023]
Abstract
Infectious diseases and antimicrobial resistance are major burdens in developing countries, where very specific conditions impede the deployment of established medical infrastructures. Since biosensing devices are nowadays very common in developed countries, particularly in the field of diagnostics, they are at a stage of maturity at which other potential outcomes can be explored, especially on their possibilities for multiplexing and automation to reduce the time-to-results. However, the translation is far from being trivial. In order to understand the factors and barriers that can facilitate or hinder the application of biosensors in resource-limited settings, we analyze the context from several angles. First, the technology of the devices themselves has to be rethought to take into account the specific needs and the available means of these countries. For this, we describe the partition of a biosensor into its functional shells, which define the information flow from the analyte to the end-user, and by following this partition we assess the strengths and weaknesses of biosensing devices in view of their specific technological development and challenging deployment in low-resource environments. Then, we discuss the problem of cost reduction by pointing out transversal factors, such as throughput and cost of mistreatment, that need to be re-considered when analyzing the cost-effectiveness of biosensing devices. Beyond the technical landscape, the compliance with regulations is also a major aspect that is described with its link to the validation of the devices and to the acceptance from the local medical personnel. Finally, to learn from a successful case, we analyze a breakthrough inexpensive biosensor that is showing high potential with respect to many of the described aspects. We conclude by mentioning both some transversal benefits of deploying biosensors in developing countries, and the key factors that can drive such applications.
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Affiliation(s)
- Daniel Migliozzi
- Laboratory of Microsystems, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
| | - Thomas Guibentif
- Energy Center, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
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11
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Zhang J, Dai S, Zhong J, Xi T, Ma C, Li Y, Di J, Zhao J. Wavelength-multiplexing surface plasmon holographic microscopy. OPTICS EXPRESS 2018; 26:13549-13560. [PMID: 29801379 DOI: 10.1364/oe.26.013549] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 05/06/2018] [Indexed: 06/08/2023]
Abstract
Surface plasmon holographic microscopy (SPHM), which combines surface plasmon microscopy with digital holographic microscopy, can be applied for amplitude- and phase-contrast surface plasmon resonance (SPR) imaging. In this paper, we propose an improved SPHM with the wavelength multiplexing technique based on two laser sources and a common-path hologram recording configuration. Through recording and reconstructing the SPR images at two wavelengths simultaneously employing the improved SPHM, tiny variation of dielectric refractive index in near field is quantitatively monitored with an extended measurement range while maintaining the high sensitivity. Moreover, imaging onion tissues is performed to demonstrate that the detection sensitivities of two wavelengths can compensate for each other in SPR imaging. The proposed wavelength-multiplexing SPHM presents simple structure, high temporal stability and inherent capability of phase curvature compensation, as well as shows great potentials for further applications in monitoring diverse dynamic processes related with refractive index variations and imaging biological tissues with low-contrast refractive index distributions in the near field.
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12
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Zhang J, Dai S, Ma C, Di J, Zhao J. Compact surface plasmon holographic microscopy for near-field film mapping. OPTICS LETTERS 2017; 42:3462-3465. [PMID: 28957063 DOI: 10.1364/ol.42.003462] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 08/08/2017] [Indexed: 06/07/2023]
Abstract
We develop a compact objective-coupling surface plasmon holographic microscopy with a common-path configuration by introducing a Wollaston prism. Through off-axis hologram recording and numerical reconstruction, amplitude- and phase-contrast surface plasmon resonance (SPR) images can be obtained simultaneously. Based on the four-layer SPR model, the thin film thickness distribution in near field can be mapped unambiguously using a novel demodulation method without a priori knowledge. The technique demonstrates nondestructive and full-field measurement capabilities with sub-nanometer resolution theoretically. Furthermore, owing to the high temporal stability, the recommended system shows great potential for dynamic measurement of near-field tiny refractive index or thickness variation in fields such as chemistry and biomedicine, etc.
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13
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Abstract
Microarrays of biological molecules such as DNAs, proteins, carbohydrates, and small molecules provide a high-throughput platform for screening tens of thousands of biomolecular interactions simultaneously, facilitating the functional characterization of these biomolecules in areas of genomics, proteomics, glycomics, and cytomics. Routinely, analysis of binding reactions between solution-phased probes and surface-immobilized targets involves some kinds of fluorescence-based detection methods. Even though these methods have advantages of high sensitivity and wide dynamic range, labeling probes and/or targets inevitably changes their innate properties and in turn affects probe-target interactions in often uncharacterized ways. Therefore, in recent years, various label-free sensing technologies have been developed for characterizing biomolecular interactions in microarray format. These biosensors, to a certain extent, take the place of fluorescent methods by providing a comparable sensitivity as well as retaining the conformational and functional integrality of biomolecules to be investigated. More importantly, some of these biosensors are capable of real-time monitoring probe-target interactions, providing the binding affinities of these reactions. Using label-free biosensors in microarrays has become a current trend in developing high-throughput screening platforms for drug discoveries and applications in all areas of "-omics." This article is aimed to provide principles and recent developments in label-free sensing technologies applicable to microarrays, with special attentions being paid to surface plasmon resonance microscopy and oblique-incidence reflectivity difference microscopy.
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Affiliation(s)
- Yung-Shin Sun
- Department of Physics, Fu-Jen Catholic University, New Taipei City, Taiwan, 24205.
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14
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Dias TM, Fernandes E, Cardoso S, Monteiro G, Freitas PP. One-step trapping of droplets and surface functionalization of sensors using gold-patterned structures for multiplexing in biochips. RSC Adv 2017. [DOI: 10.1039/c7ra06085h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
A new methodology for one-step trapping of microspotted droplets and surface functionalization of sensors using gold-patterned structures for multiplexing Point-of-Care testing.
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Affiliation(s)
- T. M. Dias
- INESC Microsystems and Nanotechnologies
- Instituto de Nanociencias e Nanotecnologias
- 1000-029 Lisbon
- Portugal
- IBB–Institute for Bioengineering and Biosciences
| | - E. Fernandes
- International Iberian Nanotechnology Laboratory
- Braga
- Portugal
| | - S. Cardoso
- Instituto Superior Tecnico
- Universidade de Lisboa
- 1049-001 Lisbon
- Portugal
- International Iberian Nanotechnology Laboratory
| | - G. Monteiro
- IBB–Institute for Bioengineering and Biosciences
- 1049-001 Lisboa
- Portugal
- Instituto Superior Tecnico
- Universidade de Lisboa
| | - P. P. Freitas
- INESC Microsystems and Nanotechnologies
- Instituto de Nanociencias e Nanotecnologias
- 1000-029 Lisbon
- Portugal
- International Iberian Nanotechnology Laboratory
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15
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Zeidan E, Shivaji R, Henrich VC, Sandros MG. Nano-SPRi Aptasensor for the Detection of Progesterone in Buffer. Sci Rep 2016; 6:26714. [PMID: 27216648 PMCID: PMC4877642 DOI: 10.1038/srep26714] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 05/09/2016] [Indexed: 02/07/2023] Open
Abstract
Progesterone is a steroid hormone that plays a central role in the female reproductive processes such as ovulation and pregnancy with possible effects on other organs as well. The measurement of progesterone levels in bodily fluids can assist in early pregnancy diagnosis and can provide insight for other reproductive functions. In this work, the detection of progesterone was examined by integrating novel aptamer development with a nanoEnhanced surface plasmon resonance imaging sensor. First, we developed X-aptamers and selected them for binding to progesterone. Then, we took advantage of the multi-array feature of SPRi to develop an optimized biosensor capable of simultaneously screening the 9 X-aptamers developed to determine the binding capabilities of each aptamer. The sensor surface design conditions were further optimized for the sandwich assay, which employed nanoEnhancers (NIR-streptavidin coated quantum dots) for ultrasensitive detection of progesterone molecules. The assay designed was examined over a concentration range of 1.575 ng/mL to 126 μg/mL resulting in a limit of detection (LOD) of 1.575 ng/mL (5 nM) in phosphate buffer.
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Affiliation(s)
- Effat Zeidan
- Department of Nanoscience, University of North Carolina at Greensboro, Greensboro, NC 27401, USA
| | - Renuka Shivaji
- Molecular Core Lab, University of North Carolina at Greensboro, Greensboro, NC 27402, USA
| | - Vincent C Henrich
- Molecular Core Lab, University of North Carolina at Greensboro, Greensboro, NC 27402, USA.,Center for Biotechnology, Genomics, and Health Research, University of North Carolina at Greensboro, Greensboro, NC, 27402, USA
| | - Marinella G Sandros
- Department of Nanoscience, University of North Carolina at Greensboro, Greensboro, NC 27401, USA.,HORIBA Scientific, Edison, NJ 08820, USA
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16
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Sun YS. Use of Microarrays as a High-Throughput Platform for Label-Free Biosensing. ACTA ACUST UNITED AC 2015; 20:334-53. [DOI: 10.1177/2211068215577570] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Indexed: 12/28/2022]
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17
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de los Santos Pereira A, Kostina NY, Bruns M, Rodriguez-Emmenegger C, Barner-Kowollik C. Phototriggered functionalization of hierarchically structured polymer brushes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:5899-5907. [PMID: 25961109 DOI: 10.1021/acs.langmuir.5b01114] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The precise design of bioactive surfaces, essential for the advancement of many biomedical applications, depends on achieving control of the surface architecture as well as on the ability to attach bioreceptors to antifouling surfaces. Herein, we report a facile avenue toward hierarchically structured antifouling polymer brushes of oligo(ethylene glycol) methacrylates via surface-initiated atom transfer radical polymerization (SI-ATRP) presenting photoactive tetrazole moieties, which permitted their functionalization via nitrile imine-mediated tetrazole-ene cyclocloaddition (NITEC). A maleimide-functional ATRP initiator was photoclicked to the side chains of a brush enabling a subsequent polymerization of carboxybetaine acrylamide to generate a micropatterned graft-on-graft polymer architecture as evidenced by X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS). Furthermore, the spatially resolved biofunctionalization of the tetrazole-presenting brushes was accessed by the photoligation of biotin-maleimide and subsequent binding of streptavidin. The functionalized brushes bearing streptavidin were able to resist the fouling from blood plasma (90% reduction with respect to bare gold). Moreover, they were employed to demonstrate a model biosensor by immobilization of a biotinylated antibody and subsequent capture of an antigen as monitored in real time by surface plasmon resonance.
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Affiliation(s)
- Andres de los Santos Pereira
- †Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky sq. 2, 162 06 Prague, Czech Republic
| | - Nina Yu Kostina
- †Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky sq. 2, 162 06 Prague, Czech Republic
| | - Michael Bruns
- ‡Institut für Angewandte Materialien (IAM), Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Cesar Rodriguez-Emmenegger
- †Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky sq. 2, 162 06 Prague, Czech Republic
| | - Christopher Barner-Kowollik
- ∥Preparative Macromolecular Chemistry, Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstr. 18, 76131 Karlsruhe, Germany
- §Institut für Biologische Grenzflächen, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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18
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Mandracchia B, Pagliarulo V, Paturzo M, Ferraro P. Surface Plasmon Resonance Imaging by Holographic Enhanced Mapping. Anal Chem 2015; 87:4124-8. [DOI: 10.1021/acs.analchem.5b00095] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- B. Mandracchia
- CNR−Istituto di Cibernetica “E. Caianiello”, Via Campi Flegrei 34, 80078, Pozzuoli, Napoli, Italy
- Dipartimento
di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università di Napoli Federico II, Piazzale Tecchio 80, 80100, Napoli, Italy
| | - V. Pagliarulo
- CNR−Istituto di Cibernetica “E. Caianiello”, Via Campi Flegrei 34, 80078, Pozzuoli, Napoli, Italy
| | - M. Paturzo
- CNR−Istituto di Cibernetica “E. Caianiello”, Via Campi Flegrei 34, 80078, Pozzuoli, Napoli, Italy
| | - P. Ferraro
- CNR−Istituto di Cibernetica “E. Caianiello”, Via Campi Flegrei 34, 80078, Pozzuoli, Napoli, Italy
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19
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Functionalizable low-fouling coatings for label-free biosensing in complex biological media: advances and applications. Anal Bioanal Chem 2015; 407:3927-53. [DOI: 10.1007/s00216-015-8606-5] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 02/20/2015] [Accepted: 02/27/2015] [Indexed: 12/31/2022]
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20
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Lee H, Xu L, Koh D, Nyayapathi N, Oh KW. Various on-chip sensors with microfluidics for biological applications. SENSORS 2014; 14:17008-36. [PMID: 25222033 PMCID: PMC4208211 DOI: 10.3390/s140917008] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 08/29/2014] [Accepted: 09/10/2014] [Indexed: 12/29/2022]
Abstract
In this paper, we review recent advances in on-chip sensors integrated with microfluidics for biological applications. Since the 1990s, much research has concentrated on developing a sensing system using optical phenomena such as surface plasmon resonance (SPR) and surface-enhanced Raman scattering (SERS) to improve the sensitivity of the device. The sensing performance can be significantly enhanced with the use of microfluidic chips to provide effective liquid manipulation and greater flexibility. We describe an optical image sensor with a simpler platform for better performance over a larger field of view (FOV) and greater depth of field (DOF). As a new trend, we review consumer electronics such as smart phones, tablets, Google glasses, etc. which are being incorporated in point-of-care (POC) testing systems. In addition, we discuss in detail the current optical sensing system integrated with a microfluidic chip.
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Affiliation(s)
- Hun Lee
- Department of Electrical Engineering, University at Buffalo, State University of New York (SUNY at Buffalo), Buffalo, NY 14260, USA.
| | - Linfeng Xu
- Department of Electrical Engineering, University at Buffalo, State University of New York (SUNY at Buffalo), Buffalo, NY 14260, USA.
| | - Domin Koh
- Department of Electrical Engineering, University at Buffalo, State University of New York (SUNY at Buffalo), Buffalo, NY 14260, USA.
| | - Nikhila Nyayapathi
- Department of Electrical Engineering, University at Buffalo, State University of New York (SUNY at Buffalo), Buffalo, NY 14260, USA.
| | - Kwang W Oh
- Department of Electrical Engineering, University at Buffalo, State University of New York (SUNY at Buffalo), Buffalo, NY 14260, USA.
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21
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Kersten B, Wanker EE, Hoheisel JD, Angenendt P. Multiplex approaches in protein microarray technology. Expert Rev Proteomics 2014; 2:499-510. [PMID: 16097884 DOI: 10.1586/14789450.2.4.499] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The success of genome sequencing projects has provided the basis for systematic analysis of protein function and has led to a shift from the description of single molecules to the characterization of complex samples. Such a task would not be possible without the provision of appropriate high-throughput technologies, such as protein microarray technology. In addition, the increasing number of samples necessitates the adaptation of such technologies to a multiplex format. This review will discuss protein microarray technology in the context of multiplex analysis and highlight its current prospects and limitations.
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Affiliation(s)
- Birgit Kersten
- Max-Delbrück-Centrum für Molekulare Medizin, Robert-Rössle-Strasse 10, D-13125 Berlin-Buch, Germany.
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22
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Cheng P, Oliver PM, Barrett MJ, Vezenov D. Progress toward the application of molecular force spectroscopy to DNA sequencing. Electrophoresis 2013; 33:3497-505. [PMID: 23161379 DOI: 10.1002/elps.201200351] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 08/24/2012] [Accepted: 08/27/2012] [Indexed: 02/03/2023]
Abstract
Many recent advances in DNA sequencing have taken advantage of single-molecule techniques using fluorescently labeled oligonucleotides as the principal mode of detection. However, in spite of the successes of fluorescent-based sequencers, avoidance of labeled nucleotides could substantially reduce the costs of sequencing. This article discusses the development of an alternative sequencing method in which unlabeled DNA can be manipulated directly on a massively parallel scale using single-molecule force spectroscopy. We combine a wide-field optical detection technique (evanescent field excitation) with one of two methods of applying force in parallel, magnetic or dielectrophoretic tweezers, to attain near single-base sensitivity in the double-stranded character of DNA. This article will discuss the developments of such a single-molecule force spectroscopy technique as a potential technology for genome sequencing.
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Affiliation(s)
- Peng Cheng
- Department of Chemistry, Lehigh University, Bethlehem, PA 18015, USA
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23
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Ouellet E, Lund L, Lagally ET. Multiplexed surface plasmon resonance imaging for protein biomarker analysis. Methods Mol Biol 2013; 949:473-90. [PMID: 23329461 DOI: 10.1007/978-1-62703-134-9_30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
The reliable detection of ligand and analyte binding is of significant importance for the field of medical diagnostics. Recent advances in proteomics and the rapid expansion in the number of identified protein biomarkers enhance the need for reliable techniques for their identification in complex samples. Surface plasmon resonance imaging (SPRi) provides label-free detection of this binding process in real-time. This chapter details the fabrication of an SPR imaging instrument and its use in analyzing molecular binding interactions with the use of a high-density microfluidic SPRi chip, capable of multiplexed analysis as well as various immobilization chemistries. Controlled recovery of bound biomarkers is demonstrated to enable their identification using mass spectrometry. Finally, activated leukocyte cell adhesion molecule (ALCAM), a protein biomarker associated with a variety of cancers, is identified from human crude cell lysates using the microfluidic surface plasmon resonance imaging (SPRi) instrument.
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Affiliation(s)
- Eric Ouellet
- Michael Smith Laboratories, University of British Columbia, Vancouver, BC, Canada
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24
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Šípová H, Homola J. Surface plasmon resonance sensing of nucleic acids: a review. Anal Chim Acta 2013; 773:9-23. [PMID: 23561902 DOI: 10.1016/j.aca.2012.12.040] [Citation(s) in RCA: 137] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Revised: 12/19/2012] [Accepted: 12/21/2012] [Indexed: 12/12/2022]
Abstract
Biosensors based on surface plasmon resonance (SPR) have become a central tool for the investigation and quantification of biomolecules and their interactions. Nucleic acids (NAs) play a vital role in numerous biological processes and therefore have been one of the major groups of biomolecules targeted by the SPR biosensors. This paper discusses the advances of NA SPR biosensor technology and reviews its applications both in the research of molecular interactions involving NAs (NA-NA, NA-protein, NA-small molecule), as well as for the field of bioanalytics in the areas of food safety, medical diagnosis and environmental monitoring.
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Affiliation(s)
- Hana Šípová
- Institute of Photonics and Electronics, Academy of Sciences of the Czech Republic, Chaberská 57, Prague, Czech Republic
| | - Jiří Homola
- Institute of Photonics and Electronics, Academy of Sciences of the Czech Republic, Chaberská 57, Prague, Czech Republic.
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25
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Seefeld TH, Halpern AR, Corn RM. On-chip synthesis of protein microarrays from DNA microarrays via coupled in vitro transcription and translation for surface plasmon resonance imaging biosensor applications. J Am Chem Soc 2012; 134:12358-61. [PMID: 22793370 DOI: 10.1021/ja304187r] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Protein microarrays are fabricated from double-stranded DNA (dsDNA) microarrays by a one-step, multiplexed enzymatic synthesis in an on-chip microfluidic format and then employed for antibody biosensing measurements with surface plasmon resonance imaging (SPRI). A microarray of dsDNA elements (denoted as generator elements) that encode either a His-tagged green fluorescent protein (GFP) or a His-tagged luciferase protein is utilized to create multiple copies of mRNA (mRNA) in a surface RNA polymerase reaction; the mRNA transcripts are then translated into proteins by cell-free protein synthesis in a microfluidic format. The His-tagged proteins diffuse to adjacent Cu(II)-NTA microarray elements (denoted as detector elements) and are specifically adsorbed. The net result is the on-chip, cell-free synthesis of a protein microarray that can be used immediately for SPRI protein biosensing. The dual element format greatly reduces any interference from the nonspecific adsorption of enzyme or proteins. SPRI measurements for the detection of the antibodies anti-GFP and antiluciferase were used to verify the formation of the protein microarray. This convenient on-chip protein microarray fabrication method can be implemented for multiplexed SPRI biosensing measurements in both clinical and research applications.
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Affiliation(s)
- Ting H Seefeld
- Department of Chemistry, University of California-Irvine, Irvine, California 92697, United States
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26
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Guo X. Surface plasmon resonance based biosensor technique: a review. JOURNAL OF BIOPHOTONICS 2012; 5:483-501. [PMID: 22467335 DOI: 10.1002/jbio.201200015] [Citation(s) in RCA: 177] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2012] [Revised: 03/10/2012] [Accepted: 03/11/2012] [Indexed: 05/12/2023]
Abstract
Optical Surface plasmon resonance (SPR) biosensors represent the most advanced and developed optical label-free biosensor technology. Optical SPR biosensors are a powerful detection and analysis tool that has vast applications in environmental protection, biotechnology, medical diagnostics, drug screening, food safety and security. This article reviews the recent development of SPR biosensor techniques, including bulk SPR and localized SPR (LSPR) biosensors, for detecting interactions between an analyte of interest in solution and a biomolecular recognition. The concepts of bulk and localized SPs and the working principles of both sensing techniques are introduced. Major sensing advances on biorecognition elements, measurement formats, and sensing platforms are presented. Finally, the discussions on both biosensor techniques as well as comparison of both SPR sensing techniques are made.
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Affiliation(s)
- Xiaowei Guo
- School of Electrical Engineering and Computer Science, and College of Engineering, Seoul National University, 599 Gwanangno, Gwanak-gu, Seoul 151-744, South Korea.
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27
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Barrett MJ, Oliver PM, Cheng P, Cetin D, Vezenov D. High density single-molecule-bead arrays for parallel single molecule force spectroscopy. Anal Chem 2012; 84:4907-14. [PMID: 22548234 DOI: 10.1021/ac3001622] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The assembly of a highly parallel force spectroscopy tool requires careful placement of single-molecule targets on the substrate and the deliberate manipulation of a multitude of force probes. Since the probe must approach the target biomolecule for covalent attachment, while avoiding irreversible adhesion to the substrate, the use of polymer microspheres as force probes to create the tethered bead array poses a problem. Therefore, the interactions between the force probe and the surface must be repulsive at very short distances (<5 nm) and attractive at long distances. To achieve this balance, the chemistry of the substrate, force probe, and solution must be tailored to control the probe-surface interactions. In addition to an appropriately designed chemistry, it is necessary to control the surface density of the target molecule in order to ensure that only one molecule is interrogated by a single force probe. We used gold-thiol chemistry to control both the substrate's surface chemistry and the spacing of the studied molecules, through binding of the thiol-terminated DNA and an inert thiol forming a blocking layer. For our single molecule array, we modeled the forces between the probe and the substrate using DLVO theory and measured their magnitude and direction with colloidal probe microscopy. The practicality of each system was tested using a probe binding assay to evaluate the proportion of the beads remaining adhered to the surface after application of force. We have translated the results specific for our system to general guiding principles for preparation of tethered bead arrays and demonstrated the ability of this system to produce a high yield of active force spectroscopy probes in a microwell substrate. This study outlines the characteristics of the chemistry needed to create such a force spectroscopy array.
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Affiliation(s)
- Michael J Barrett
- Department of Chemistry, Lehigh University, 6 East Packer Avenue, Bethlehem, Pennsylvania 18015, United States
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28
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Abramson J, Palma M, Wind SJ, Hone J. Quantum dot nanoarrays: self-assembly with single-particle control and resolution. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:2207-2211. [PMID: 22431200 DOI: 10.1002/adma.201104216] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Revised: 01/12/2012] [Indexed: 05/31/2023]
Abstract
The develpoment of a highly selective immobilization strategy for the self-assembly of quantum dots (QDs) from solution on lithographically defined, biochemically functionalized metal nanopatterns is presented. Nanosale control is achieved for the formation of predominantly single-particle structures consisting of a QD coupled to a metal nanoparticle, and assembled into an ordered nanoarray.
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Affiliation(s)
- J Abramson
- Department of Mechanical Engineering, Columbia University, New York, NY 10027, USA
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29
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Li YC, Chiou CC, Luo JD, Chen WJ, Su LC, Chang YF, Chang YS, Lai CS, Lee CC, Chou C. Sensitive detection of unlabeled oligonucleotides using a paired surface plasma waves biosensor. Biosens Bioelectron 2012; 35:342-348. [PMID: 22480779 DOI: 10.1016/j.bios.2012.03.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Revised: 03/08/2012] [Accepted: 03/09/2012] [Indexed: 02/02/2023]
Abstract
Detection of unlabeled oligonucleotides using surface plasmon resonance (SPR) is difficult because of the oligonucleotides' relatively lower molecular weight compared with proteins. In this paper, we describe a method for detecting unlabeled oligonucleotides at low concentration using a paired surface plasma waves biosensor (PSPWB). The biosensor uses a sensor chip with an immobilized probe to detect a target oligonucleotide via sequence-specific hybridization. PSPWB measures the demodulated amplitude of the heterodyne signal in real time. In the meantime, the ratio of the amplitudes between the detected output signal and reference can reduce the excess noise from the laser intensity fluctuation. Also, the common-path propagation of p and s waves cancels the common phase noise induced by temperature variation. Thus, a high signal-to-noise ratio (SNR) of the heterodyne signal is detected. The sequence specificity of oligonucleotide hybridization ensures that the platform is precisely discriminating between target and non-target oligonucleotides. Under optimized experimental conditions, the detected heterodyne signal increases linearly with the logarithm of the concentration of target oligonucleotide over the range 0.5-500 pM. The detection limit is 0.5 pM in this experiment. In addition, the non-target oligonucleotide at concentrations of 10 pM and 10nM generated signals only slightly higher than background, indicating the high selectivity and specificity of this method. Different length of perfectly matched oligonucleotide targets at 10-mer, 15-mer and 20-mer were identified at the concentration of 150 pM.
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Affiliation(s)
- Ying-Chang Li
- Department of Optics and Photonics, National Central University, Taoyuan, 320, Taiwan; Graduate Institute of Electro-Optical Engineering, Chang Gung University, Taoyuan, 333, Taiwan
| | - Chiuan-Chian Chiou
- Department of Medical Biotechnology and Laboratory Science, Chang Gung University, Taoyuan, 333, Taiwan
| | - Ji-Dung Luo
- Department of Medical Biotechnology and Laboratory Science, Chang Gung University, Taoyuan, 333, Taiwan
| | - Wei-Ju Chen
- Graduate Institute of Electro-Optical Engineering, Chang Gung University, Taoyuan, 333, Taiwan
| | - Li-Chen Su
- Department of Optics and Photonics, National Central University, Taoyuan, 320, Taiwan; Graduate Institute of Electro-Optical Engineering, Chang Gung University, Taoyuan, 333, Taiwan
| | - Ying-Feng Chang
- Graduate Institute of Electro-Optical Engineering, Chang Gung University, Taoyuan, 333, Taiwan; Molecular Medicine Research Center, Chang Gung University, Taoyuan, 333, Taiwan
| | - Yu-Sun Chang
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, 333, Taiwan; Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, 333, Taiwan
| | - Chao-Sung Lai
- Department of Electronic Engineering, Chang Gung University, Taoyuan, 333, Taiwan; Biomedical Engineering Research Center, Chang Gung University, Taoyuan, 333, Taiwan
| | - Cheng-Chung Lee
- Department of Optics and Photonics, National Central University, Taoyuan, 320, Taiwan
| | - Chien Chou
- Department of Optics and Photonics, National Central University, Taoyuan, 320, Taiwan; Graduate Institute of Electro-Optical Engineering, Chang Gung University, Taoyuan, 333, Taiwan; Biomedical Engineering Research Center, Chang Gung University, Taoyuan, 333, Taiwan.
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30
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Szili EJ, Al-Bataineh SA, Ruschitzka P, Desmet G, Priest C, Griesser HJ, Voelcker NH, Harding FJ, Steele DA, Short RD. Microplasma arrays: a new approach for maskless and localized patterning of materials surfaces. RSC Adv 2012. [DOI: 10.1039/c2ra21504g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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31
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Nirschl M, Reuter F, Vörös J. Review of transducer principles for label-free biomolecular interaction analysis. BIOSENSORS 2011; 1:70-92. [PMID: 25586921 PMCID: PMC4264362 DOI: 10.3390/bios1030070] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2011] [Revised: 06/18/2011] [Accepted: 06/29/2011] [Indexed: 01/12/2023]
Abstract
Label-free biomolecular interaction analysis is an important technique to study the chemical binding between e.g., protein and protein or protein and small molecule in real-time. The parameters obtained with this technique, such as the affinity, are important for drug development. While the surface plasmon resonance (SPR) instruments are most widely used, new types of sensors are emerging. These developments are generally driven by the need for higher throughput, lower sample consumption or by the need of complimentary information to the SPR data. This review aims to give an overview about a wide range of sensor transducers, the working principles and the peculiarities of each technology, e.g., concerning the set-up, sensitivity, sensor size or required sample volume. Starting from optical technologies like the SPR and waveguide based sensors, acoustic sensors like the quartz crystal microbalance (QCM) and the film bulk acoustic resonator (FBAR), calorimetric and electrochemical sensors are covered. Technologies long established in the market are presented together with those newly commercially available and with technologies in the early development stage. Finally, the commercially available instruments are summarized together with their sensitivity and the number of sensors usable in parallel and an outlook for potential future developments is given.
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Affiliation(s)
- Martin Nirschl
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Switzerland.
| | - Florian Reuter
- Siemens Technology Accelerator GmbH, Otto-Hahn-Ring 6, 81739 Munich, Germany.
| | - Janos Vörös
- Laboratory of Biosensors and Bioelectronics, Institute for Biomedical Engineering, ETH Zurich, Switzerland.
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32
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Kim SA, Das S, Lee H, Kim J, Song YM, Kim IS, Byun KM, Hwang SJ, Kim SJ. Preliminary approach of real-time monitoring in vitro matrix mineralization based on surface plasmon resonance detection. Biotechnol Bioeng 2011; 108:1473-8. [PMID: 21192003 DOI: 10.1002/bit.23049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Revised: 11/12/2010] [Accepted: 12/13/2010] [Indexed: 01/16/2023]
Abstract
Matrix mineralization is a terminal process in osteoblast differentiation, and several approaches have been introduced to characterize the process in tissues or cultured cells. However, an analytical technique that quantitates in vitro matrix mineralization of live cells without any labeling or complex treatments is still lacking. In this study, we investigate a simple and enhanced optical method based on surface plasmon resonance (SPR) detection that can monitor the surface-limited refractive index change in real-time. During monitoring MC3T3-E1 cells in vitro culture every 2 days for over 4 weeks, the SPR angle is shifted with a greater resonance change in cells cultured with osteogenic reagents than those without the reagents. In addition, the SPR results obtained have a close relevance with the tendency of conventional mineralization staining and an inductively coupled plasma-based calcium content measure. These results suggest a new approach of a real-time SPR monitoring in vitro matrix mineralization of cultured cells.
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Affiliation(s)
- Shin Ae Kim
- School of Electrical Engineering and Computer Science, Seoul National University, Seoul 151-742, Korea
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33
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Wang CHK, Pun SH. Substrate-mediated nucleic acid delivery from self-assembled monolayers. Trends Biotechnol 2011; 29:119-26. [PMID: 21208672 DOI: 10.1016/j.tibtech.2010.11.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Revised: 11/16/2010] [Accepted: 11/19/2010] [Indexed: 12/12/2022]
Abstract
Substrate-mediated nucleic acid (NA) delivery involves the immobilization of NAs or NA delivery vehicles to biomaterials for localized transfection of cells. Self-assembled monolayers (SAMs) offer an easy system to immobilize delivery vectors. SAMs form well-defined surfaces; therefore, the effect of surface composition on vector immobilization and transfection efficiency can also be studied. To date, the most effective SAM-mediated delivery systems have utilized nonspecific interactions for immobilization; however, systems that rely on specific interactions between vector and surface can impart higher control of spatial and/or temporal delivery. This review summarizes systems that use both specific and nonspecific interactions for gene delivery from SAMs; highlights progress and remaining challenges; and explores other specific recognition modalities that might be employed for future applications in surface-mediated NA delivery.
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Affiliation(s)
- Chung-Huei K Wang
- Department of Bioengineering, University of Washington, 3720 15th Ave NE, Seattle, WA 98195, USA
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Palma M, Abramson J, Gorodetsky A, Nuckolls C, Sheetz MP, Wind SJ, Hone J. Controlled confinement of DNA at the nanoscale: nanofabrication and surface bio-functionalization. Methods Mol Biol 2011; 749:169-85. [PMID: 21674372 PMCID: PMC3381934 DOI: 10.1007/978-1-61779-142-0_12] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
Nanopatterned arrays of biomolecules are a powerful tool to address fundamental issues in many areas of biology. DNA nanoarrays, in particular, are of interest in the study of DNA-protein interactions and for biodiagnostic investigations. In this context, achieving a highly specific nanoscale assembly of oligonucleotides at surfaces is critical. In this chapter, we describe a method to control the immobilization of DNA on nanopatterned surfaces; the nanofabrication and the bio-functionalization involved in the process will be discussed.
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Affiliation(s)
- Matteo Palma
- Department of Mechanical Engineering & Applied Physics and Applied Mathematics, Columbia University, New York, NY, USA.
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35
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Tsai TL, Shieh DB, Yeh CS, Tzeng Y, Htet K, Chuang KS, Hwu JR, Su WC. The down regulation of target genes by photo activated DNA nanoscissors. Biomaterials 2010; 31:6545-54. [DOI: 10.1016/j.biomaterials.2010.04.058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2010] [Accepted: 04/29/2010] [Indexed: 01/24/2023]
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36
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Manimozhi P, Rajendran L. Derivation of nonsteady-state analytical solution for surface enzyme kinetics. J Electroanal Chem (Lausanne) 2010. [DOI: 10.1016/j.jelechem.2010.05.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Drew ME, Chworos A, Oroudjev E, Hansma H, Yamakoshi Y. A tripod molecular tip for single molecule ligand-receptor force spectroscopy by AFM. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:7117-7125. [PMID: 20000731 DOI: 10.1021/la904151h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Tripod-shaped molecules were designed for chemical modification of the surface of probes used for atomic force microscopy (AFM). These chemically functionalized tips were used for chemical force spectroscopy (CFS) measurements of the ligand-protein receptor interaction in a biotin-NeutrAvidin model system. We demonstrate that by using this unique tripodal system, we can achieve significantly lower density of ligand on the AFM tip apex, which is optimal for true single molecule measurements. Furthermore, the molecular tripods form highly stable bonds to the AFM probes, leading to more robust and reproducible unbinding force data, thereby addressing one of the challenges in CFS studies. Histogram analysis of the hundreds of collected unbinding forces showed a specific distribution with a peak force maximum at approximately 165 pN, in good agreement with the previously reported data of single rupture events of biotin-avidin. We compared these molecular tripod tips with a molecular monopod. The results showed that the molecular tripods are more robust for repeated measurements. The distinct biotin-avidin force maximum was not observed in the control experiments. This indicated that the force distribution observed for molecular tripods corresponds to the specific rupture force between biotin and avidin. The improved robustness of molecular tripods for CFS will provide benefits in other ligand-receptor unbinding studies, including those of transmembrane receptor systems, which require high resolution, sensitivity, and reproducibility in force spectroscopy measurements.
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Affiliation(s)
- Michael E Drew
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia Pennsylvania 19104-6323, USA
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Dietrich PM, Graf N, Gross T, Lippitz A, Schüpbach B, Bashir A, Wöll C, Terfort A, Unger WES. Self-assembled monolayers of aromatic omega-aminothiols on gold: surface chemistry and reactivity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:3949-3954. [PMID: 20041682 DOI: 10.1021/la903293b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Amino-terminated self-assembled monolayers on gold substrates were studied by X-ray photoelectron spectroscopy (XPS), near-edge X-ray absorption fine structure (NEXAFS) measurements, and atomic force microscopy (AFM). Two different omega-amino-4,4'-terphenyl substituted alkanethiols of the general structure H(2)N-(C(6)H(4))(3)-(CH(2))(n)-SH (ATPn) were used: 2-(4''-amino-1,1':4',1''-terphenyl-4-yl)ethane-1-thiol (n = 2, ATP2) and 3-(4''-amino-1,1':4',1''-terphenyl-4-yl)propane-1-thiol (n = 3, ATP3). Moreover, the addressability of amino groups within the films was investigated by chemical derivatization of ATPn SAMs with 3,5-bis(trifluoromethyl)phenyl isothiocyanate (ITC) forming fluorinated thiourea ATPn-F films. Evaluation of high-resolution C 1s and N 1s XPS data revealed successful derivatization of at least 50% of surface amino species. Furthermore, it could be demonstrated by angle-resolved NEXAFS spectroscopy that chemical derivatization with ITC has no noticeable influence on the preferential upright orientation of the molecules in the SAMs.
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Affiliation(s)
- Paul M Dietrich
- BAM Bundesanstalt für Materialforschung und -prüfung, D-12203 Berlin, Germany
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Ouellet E, Lausted C, Lin T, Yang CWT, Hood L, Lagally ET. Parallel microfluidic surface plasmon resonance imaging arrays. LAB ON A CHIP 2010; 10:581-8. [PMID: 20162233 DOI: 10.1039/b920589f] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Surface plasmon resonance imaging (SPRi) is a label-free technique used for the quantitation of binding affinities and concentrations for a wide variety of target molecules. Although SPRi is capable of determining binding constants for multiple ligands in parallel, current commercial instruments are limited to a single analyte stream on multiple ligand spots. Measurement of binding kinetics requires the serial introduction of different analyte concentrations; such repeated experiments are conducted manually and are therefore time-intensive. To address these challenges, we have developed an integrated microfluidic array using soft lithography techniques for high-throughput SPRi-based detection and determination of binding affinities of antibodies against protein targets. The device consists of 264 element-addressable chambers isolated by microvalves. The resulting 700 pL chamber volumes, combined with a serial dilution network for simultaneous interrogation of up to six different analyte concentrations, allow for further speeding detection times. To test for device performance, human alpha-thrombin was immobilized on the sensor surface and anti-human alpha-thrombin IgG was injected across the surface at different concentrations. The equilibrium dissociation constant was determined to be 5.0 +/- 1.9 nM, which agrees well with values reported in the literature. The interrogation of multiple ligands to multiple analytes in a single device was also investigated and samples were recovered with no cross-contamination. Since each chamber can be addressed independently, this array is capable of interrogating binding events from up to 264 different immobilized ligands against multiple analytes in a single experiment. The development of high-throughput protein analytic measurements is a critical technology for systems approaches to biology and medicine.
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Affiliation(s)
- Eric Ouellet
- Michael Smith Laboratories, University of British Columbia, Vancouver, BC, Canada V6T 1Z4
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Mak AC, Osterfeld SJ, Yu H, Wang SX, Davis RW, Jejelowo OA, Pourmand N. Sensitive giant magnetoresistive-based immunoassay for multiplex mycotoxin detection. Biosens Bioelectron 2009; 25:1635-9. [PMID: 20047828 DOI: 10.1016/j.bios.2009.11.028] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2009] [Revised: 11/26/2009] [Accepted: 11/27/2009] [Indexed: 11/15/2022]
Abstract
Rapid and multiplexed measurement is vital in the detection of food-borne pathogens. While highly specific and sensitive, traditional immunochemical assays such as enzyme-linked immunosorbent assays (ELISAs) often require expensive read-out equipment (e.g. fluorescent labels) and lack the capability of multiplex detection. By combining the superior specificity of immunoassays with the sensitivity and simplicity of magnetic detection, we have developed a novel multiplex magnetic nanotag-based detection platform for mycotoxins that functions on a sub-picomolar concentration level. Unlike fluorescent labels, magnetic nanotags (MNTs) can be detected with inexpensive giant magnetoresistive (GMR) sensors such as spin-valve sensors. In the system presented here, each spin-valve sensor has an active area of 90 microm x 90 microm, arranged in an 8 x 8 array. Sample is added to the antibody-immobilized sensor array prior to the addition of the biotinylated detection antibody. The sensor response is recorded in real time upon the addition of streptavidin-linked MNTs on the chip. Here we demonstrate the simultaneous detection of multiple mycotoxins (aflatoxins B(1), zearalenone and HT-2) and show that a detection limit of 50 pg/mL can be achieved.
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Affiliation(s)
- Andy C Mak
- Stanford Genome Technology Center, Stanford University, 855 California Ave, Palo Alto, CA 94304, USA
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41
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Maynard JA, Lindquist NC, Sutherland JN, Lesuffleur A, Warrington AE, Rodriguez M, Oh SH. Surface plasmon resonance for high-throughput ligand screening of membrane-bound proteins. Biotechnol J 2009; 4:1542-58. [PMID: 19918786 PMCID: PMC2790208 DOI: 10.1002/biot.200900195] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Technologies based on surface plasmon resonance (SPR) have allowed rapid, label-free characterization of protein-protein and protein-small molecule interactions. SPR has become the gold standard in industrial and academic settings, in which the interaction between a pair of soluble binding partners is characterized in detail or a library of molecules is screened for binding against a single soluble protein. In spite of these successes, SPR is only beginning to be adapted to the needs of membrane-bound proteins which are difficult to study in situ but represent promising targets for drug and biomarker development. Existing technologies, such as BIAcoreTM, have been adapted for membrane protein analysis by building supported lipid layers or capturing lipid vesicles on existing chips. Newer technologies, still in development, will allow membrane proteins to be presented in native or near-native formats. These include SPR nanopore arrays, in which lipid bilayers containing membrane proteins stably span small pores that are addressable from both sides of the bilayer. Here, we discuss current SPR instrumentation and the potential for SPR nanopore arrays to enable quantitative, high-throughput screening of G protein coupled receptor ligands and applications in basic cellular biology.
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Affiliation(s)
- Jennifer A. Maynard
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas, 78705
| | - Nathan C. Lindquist
- Department of Electrical and Computer Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455
| | - Jamie N. Sutherland
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas, 78705
| | - Antoine Lesuffleur
- Department of Electrical and Computer Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455
| | | | - Moses Rodriguez
- Departments of Neurology, Mayo Clinic College of Medicine, Rochester, MN 55905
| | - Sang-Hyun Oh
- Department of Electrical and Computer Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455
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42
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Grasso G, D'Agata R, Zanoli L, Spoto G. Microfluidic networks for surface plasmon resonance imaging real-time kinetics experiments. Microchem J 2009. [DOI: 10.1016/j.microc.2009.05.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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43
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Label-free and sensitive faradic impedance aptasensor for the determination of lysozyme based on target-induced aptamer displacement. Biosens Bioelectron 2009; 25:94-9. [PMID: 19559590 DOI: 10.1016/j.bios.2009.06.001] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2009] [Revised: 06/01/2009] [Accepted: 06/02/2009] [Indexed: 11/21/2022]
Abstract
A label-free and sensitive faradic impedance spectroscopy (FIS) aptasensor based on target-induced aptamer displacement was developed for the determination of lysozyme as a model system. The aptasensor was fabricated by self-assembling the partial complementary single strand DNA (pcDNA)-lysozyme binding aptamer (LBA) duplex on the surface of a gold electrode. To measure lysozyme, the change in interfacial electron transfer resistance of the aptasensor using a redox couple of [Fe(CN)(6)](3-/4-) as the probe was monitored. The introduction of target lysozyme induced the displacement of the LBA from the pcDNA-LBA duplex on the electrode into the solution, decreasing the electron transfer resistance of the aptasensor. The decrease in the FIS signal is linear with the concentration of lysozyme in the range from 0.2 nM to 4.0 nM, with a detection limit of 0.07 nM. The fabricated aptasensor shows a high sensitivity, good selectivity and satisfactory regeneration. This work demonstrates that a high sensitivity of the fabricated aptasensor can be obtained using a relatively short pcDNA. This work also demonstrates that the target-induced aptamer displacement strategy is promising in the design of an electrochemical aptasensor for the determination of lysozyme with good selectivity and high sensitivity.
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Chen Y, Nguyen A, Niu L, Corn RM. Fabrication of DNA microarrays with poly(L-glutamic acid) monolayers on gold substrates for SPR imaging measurements. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:5054-60. [PMID: 19253965 PMCID: PMC2726778 DOI: 10.1021/la804021t] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Robust single-stranded DNA (ssDNA) microarrays are created by attaching amine-modified oligonucleotides to a monolayer of poly(L-glutamic acid) (pGlu) that is electrostatically adsorbed onto a chemically modified gold thin film. This surface attachment chemistry methodology is first characterized with a combination of polarization-modulation Fourier transform infrared (PM-FTIR) spectroscopy and surface plasmon resonance (SPR) angle shift measurements. SPR imaging (SPRI) measurements of these ssDNA microarrays are then used to study two surface bioaffinity interactions: (i) the quantitative hybridization adsorption of complementary ssDNA onto mixed ssDNA microarray elements and (ii) the adsorption of single-stranded binding protein (SSB) onto fully and partially hybridized DNA microarray elements. The Langmuir adsorption coefficient (K(Ads)) of SSB binding to ssDNA was determined to be (5.5 +/- 0.4) x 10(9) M(-1).
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Affiliation(s)
- Yulin Chen
- Department of Chemistry, University of California--Irvine, Irvine, California 92697, USA
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Liu J, Eddings MA, Miles AR, Bukasov R, Gale BK, Shumaker-Parry JS. In Situ Microarray Fabrication and Analysis Using a Microfluidic Flow Cell Array Integrated with Surface Plasmon Resonance Microscopy. Anal Chem 2009; 81:4296-301. [DOI: 10.1021/ac900181f] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jianping Liu
- Department of Chemistry, Department of Bioengineering, and Department of Mechanical Engineering, University of Utah, Salt Lake City, Utah 84112, and Wasatch Microfluidics, 825 N. 300 W. Street NE 129, North Salt Lake City, Utah 84054
| | - Mark A. Eddings
- Department of Chemistry, Department of Bioengineering, and Department of Mechanical Engineering, University of Utah, Salt Lake City, Utah 84112, and Wasatch Microfluidics, 825 N. 300 W. Street NE 129, North Salt Lake City, Utah 84054
| | - Adam R. Miles
- Department of Chemistry, Department of Bioengineering, and Department of Mechanical Engineering, University of Utah, Salt Lake City, Utah 84112, and Wasatch Microfluidics, 825 N. 300 W. Street NE 129, North Salt Lake City, Utah 84054
| | - Rostislav Bukasov
- Department of Chemistry, Department of Bioengineering, and Department of Mechanical Engineering, University of Utah, Salt Lake City, Utah 84112, and Wasatch Microfluidics, 825 N. 300 W. Street NE 129, North Salt Lake City, Utah 84054
| | - Bruce K. Gale
- Department of Chemistry, Department of Bioengineering, and Department of Mechanical Engineering, University of Utah, Salt Lake City, Utah 84112, and Wasatch Microfluidics, 825 N. 300 W. Street NE 129, North Salt Lake City, Utah 84054
| | - Jennifer S. Shumaker-Parry
- Department of Chemistry, Department of Bioengineering, and Department of Mechanical Engineering, University of Utah, Salt Lake City, Utah 84112, and Wasatch Microfluidics, 825 N. 300 W. Street NE 129, North Salt Lake City, Utah 84054
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Qavi AJ, Washburn AL, Byeon JY, Bailey RC. Label-free technologies for quantitative multiparameter biological analysis. Anal Bioanal Chem 2009; 394:121-35. [PMID: 19221722 PMCID: PMC2667559 DOI: 10.1007/s00216-009-2637-8] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2008] [Revised: 01/12/2009] [Accepted: 01/20/2009] [Indexed: 11/26/2022]
Abstract
In the postgenomic era, information is king and information-rich technologies are critically important drivers in both fundamental biology and medicine. It is now known that single-parameter measurements provide only limited detail and that quantitation of multiple biomolecular signatures can more fully illuminate complex biological function. Label-free technologies have recently attracted significant interest for sensitive and quantitative multiparameter analysis of biological systems. There are several different classes of label-free sensors that are currently being developed both in academia and in industry. In this critical review, we highlight, compare, and contrast some of the more promising approaches. We describe the fundamental principles of these different methods and discuss advantages and disadvantages that might potentially help one in selecting the appropriate technology for a given bioanalytical application.
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Affiliation(s)
- Abraham J. Qavi
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave, Urbana, IL 61801
| | - Adam L. Washburn
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave, Urbana, IL 61801
| | - Ji-Yeon Byeon
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave, Urbana, IL 61801
| | - Ryan C. Bailey
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave, Urbana, IL 61801
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Fruk L, Kuhlmann J, Niemeyer CM. Analysis of heme-reconstitution of apoenzymes by means of surface plasmon resonance. Chem Commun (Camb) 2008:230-2. [PMID: 19099078 DOI: 10.1039/b817206d] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Surface plasmon resonance was used to determine the kinetic parameters for heme reconstitution of apoenzymes.
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Affiliation(s)
- Ljiljana Fruk
- Biologisch Chemische Mikrostrukturtechnik, FB Chemie, TU Dortmund, Otto Hahn Str. 6, 44227, Dortmund, Germany
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48
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Eddings MA, Eckman JW, Arana CA, Papalia GA, Connolly JE, Gale BK, Myszka DG. "Spot and hop": internal referencing for surface plasmon resonance imaging using a three-dimensional microfluidic flow cell array. Anal Biochem 2008; 385:309-13. [PMID: 19059374 DOI: 10.1016/j.ab.2008.11.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2008] [Revised: 10/31/2008] [Accepted: 11/01/2008] [Indexed: 10/21/2022]
Abstract
We have developed a novel referencing technique for surface plasmon resonance imaging systems referred to as "spot and hop." The technique enables internal referencing for individual flow cells in a parallel processing microfluidic network. Internal referencing provides the ability to correct for nonspecific binding and instrument drift, significantly improving data quality at each region of interest. The performance of a 48-flow-cell device was demonstrated through a series of studies, including "rise and fall" time, ligand preconcentration, ligand immobilization, analyte binding, and regeneration tests. Interfacing parallel processing fluidics with imaging systems will significantly expand the throughput and applications of array-based optical biosensors while retaining high data quality.
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Affiliation(s)
- Mark A Eddings
- Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA
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49
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Wang Z, Wilkop T, Han JH, Dong Y, Linman MJ, Cheng Q. Development of Air-Stable, Supported Membrane Arrays with Photolithography for Study of Phosphoinositide−Protein Interactions Using Surface Plasmon Resonance Imaging. Anal Chem 2008; 80:6397-404. [DOI: 10.1021/ac800845w] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Zhuangzhi Wang
- Department of Chemistry, University of California, Riverside, California 92521
| | - Thomas Wilkop
- Department of Chemistry, University of California, Riverside, California 92521
| | - Jong Ho Han
- Department of Chemistry, University of California, Riverside, California 92521
| | - Yi Dong
- Department of Chemistry, University of California, Riverside, California 92521
| | - Matthew J. Linman
- Department of Chemistry, University of California, Riverside, California 92521
| | - Quan Cheng
- Department of Chemistry, University of California, Riverside, California 92521
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50
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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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