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Funari R, Bhalla N, Chu KY, Söderström B, Shen AQ. Nanoplasmonics for Real-Time and Label-Free Monitoring of Microbial Biofilm Formation. ACS Sens 2018; 3:1499-1509. [PMID: 30062880 DOI: 10.1021/acssensors.8b00287] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Microbial biofilms possess intrinsic resistance against conventional antibiotics and cleaning procedures; thus, a better understanding of their complex biological structures is crucial in both medical and industrial applications. Existing laboratory methodologies have focused on macroscopic and mostly indirect characterization of mechanical and microbiological properties of biofilms adhered on a given substrate. However, the kinetics underlying the biofilm formation is not well understood, while such information is critical to understanding how drugs and chemicals influence the biofilm formation. Herein, we report the use of localized surface plasmon resonance (LSPR) for real-time, label-free monitoring of E. coli biofilm assembly on a nanoplasmonic substrate consisting of gold mushroom-like structures. Our LSPR sensor is able to capture the signatures of biofilm formation in real-time by measuring the wavelength shift in the LSPR resonance peak with high temporal resolution. We employ this sensor feature to elucidate how biofilm formation is affected by different drugs, including conventional antibiotics (kanamycin and ampicillin) as well as rifapentine, a molecule preventing cell adhesion yet barely affecting bacterial viability and vitality. Due to its flexibility and simplicity, our LSPR based platform can be used on a wide variety of clinically relevant bacteria, thus representing a valuable tool in biofilm characterization and drug screening.
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52
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Flexible Localized Surface Plasmon Resonance Sensor with Metal-Insulator-Metal Nanodisks on PDMS Substrate. Sci Rep 2018; 8:11812. [PMID: 30087401 PMCID: PMC6081403 DOI: 10.1038/s41598-018-30180-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 07/23/2018] [Indexed: 01/25/2023] Open
Abstract
The small sized, flexible, high-performed and bio-compatible sensing devices are the critical elements to realize the bio-related detection or on-site health monitoring systems. In this work, the flexible localized surface plasmon resonance (LSPR) bio-sensors were demonstrated by integrating the metal-insulator-metal (MIM) nanodisks with bio-compatible polydimethylsiloxane (PDMS) substrate. The different geometries of MIM nanodisk sensors were investigated and optimized to enhance the spatial overlap of the LSPR waves with the environment, which lead to a high sensitivity of 1500 nm/RIU. The omni-directional characteristics of LSPR resonances were beneficial for maintaining the device sensitivity stable under various bending curvatures. Furthermore, the flexible MIM nanodisk LSPR sensor was applied to detect A549 cancer cells in PBS+ solution. The absorption peak of the MIM-disk LSPR sensor obviously redshift to easily distinguish between the phosphate buffered saline (PBS+) solution with A549 cancer cells and without cells. Therefore, the flexible MIM nanodisk LSPR sensor is suitable to develop on-chip microfluidic biosensors for detection of cancer cells on nonplanar surfaces.
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Pinheiro PC, Daniel-da-Silva AL, Nogueira HIS, Trindade T. Functionalized Inorganic Nanoparticles for Magnetic Separation and SERS Detection of Water Pollutants. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800132] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Paula C. Pinheiro
- Department of Chemistry-CICECO; University of Aveiro; 3810-193 Aveiro Portugal
| | | | | | - Tito Trindade
- Department of Chemistry-CICECO; University of Aveiro; 3810-193 Aveiro Portugal
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Zandieh M, Hosseini SN, Vossoughi M, Khatami M, Abbasian S, Moshaii A. Label-free and simple detection of endotoxins using a sensitive LSPR biosensor based on silver nanocolumns. Anal Biochem 2018; 548:96-101. [DOI: 10.1016/j.ab.2018.02.023] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 02/22/2018] [Accepted: 02/23/2018] [Indexed: 11/25/2022]
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55
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Bhalla N, Sathish S, Sinha A, Shen AQ. Large-Scale Nanophotonic Structures for Long-Term Monitoring of Cell Proliferation. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/adbi.201700258] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Nikhil Bhalla
- Micro/Bio/Nanofluidics Unit; Okinawa Institute of Science and Technology Graduate University; 1919-1 Tancha, Onna Kunigami District Okinawa Prefecture 904-0495 Japan
| | - Shivani Sathish
- Micro/Bio/Nanofluidics Unit; Okinawa Institute of Science and Technology Graduate University; 1919-1 Tancha, Onna Kunigami District Okinawa Prefecture 904-0495 Japan
| | - Abhishek Sinha
- Micro/Bio/Nanofluidics Unit; Okinawa Institute of Science and Technology Graduate University; 1919-1 Tancha, Onna Kunigami District Okinawa Prefecture 904-0495 Japan
| | - Amy Q. Shen
- Micro/Bio/Nanofluidics Unit; Okinawa Institute of Science and Technology Graduate University; 1919-1 Tancha, Onna Kunigami District Okinawa Prefecture 904-0495 Japan
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56
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Bhalla N, Sathish S, Galvin CJ, Campbell RA, Sinha A, Shen AQ. Plasma-Assisted Large-Scale Nanoassembly of Metal-Insulator Bioplasmonic Mushrooms. ACS APPLIED MATERIALS & INTERFACES 2018; 10:219-226. [PMID: 29236477 DOI: 10.1021/acsami.7b15396] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Large-scale plasmonic substrates consisting of metal-insulator nanostructures coated with a biorecognition layer can be exploited for enhanced label-free sensing by utilizing the principle of localized surface plasmon resonance (LSPR). Most often, the uniformity and thickness of the biorecognition layer determine the sensitivity of plasmonic resonances as the inherent LSPR sensitivity of nanomaterials is limited to 10-20 nm from the surface. However, because of time-consuming nanofabrication processes, there is limited work on both the development of large-scale plasmonic materials and the subsequent surface functionalizing with biorecognition layers. In this work, by exploiting properties of reactive ions in an SF6 plasma environment, we are able to develop a nanoplasmonic substrate containing ∼106/cm2 mushroom-like structures on a large-sized silicon dioxide substrate (i.e., 2.5 cm by 7.5 cm). We further investigate the underlying mechanism of the nanoassembly of gold on glass inside the plasma environment, which can be expanded to a variety of metal-insulator systems. By incorporating a novel microcontact printing technique, we deposit a highly uniform biorecognition layer of proteins on the nanoplasmonic substrate. The bioplasmonic assays performed on these substrates achieve a limit of detection of 10-17 g/mL (∼66 zM) for biomolecules such as antibodies (∼150 kDa). Our simple nanofabrication procedure opens new opportunities in fabricating versatile bioplasmonic materials for a wide range of biomedical and sensing applications.
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Affiliation(s)
- Nikhil Bhalla
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate School , 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
| | - Shivani Sathish
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate School , 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
| | - Casey J Galvin
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate School , 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
| | - Robert A Campbell
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate School , 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
| | - Abhishek Sinha
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate School , 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
| | - Amy Q Shen
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate School , 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
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Bhalla N, Chiang HJ, Shen AQ. Cell biology at the interface of nanobiosensors and microfluidics. Methods Cell Biol 2018; 148:203-227. [DOI: 10.1016/bs.mcb.2018.09.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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58
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Vasicek TW, Jenkins SV, Vaz L, Chen J, Stenken JA. Thermoresponsive nanoparticle agglomeration/aggregation in salt solutions: Dependence on graft density. J Colloid Interface Sci 2017; 506:338-345. [DOI: 10.1016/j.jcis.2017.07.044] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 07/11/2017] [Accepted: 07/15/2017] [Indexed: 01/30/2023]
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59
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Sugumaran S, Jamlos MF, Ahmad MN, Bellan CS, Schreurs D. Nanostructured materials with plasmonic nanobiosensors for early cancer detection: A past and future prospect. Biosens Bioelectron 2017; 100:361-373. [PMID: 28946108 DOI: 10.1016/j.bios.2017.08.044] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/02/2017] [Accepted: 08/21/2017] [Indexed: 02/08/2023]
Abstract
Early cancer detection and treatment is an emerging and fascinating field of plasmonic nanobiosensor research. It paves to enrich a life without affecting living cells leading to a possible survival of the patient. This review describes a past and future prospect of an integrated research field on nanostructured metamaterials, microwave transmission, surface plasmonic resonance, nanoantennas, and their manifested versatile properties with nano-biosensors towards early cancer detection to preserve human health. Interestingly, (i) microwave transmission shows more advantages than other electromagnetic radiation in reacting with biological tissues, (ii) nanostructured metamaterial (Au) with special properties like size and shape can stimulate plasmonic effects, (iii) plasmonic based nanobiosensors are to explore the efficacy for early cancer tumour detection or single molecular detection and (iv) nanoantenna wireless communication by using microwave inverse scattering nanomesh (MISN) technique instead of conventional techniques can be adopted to characterize the microwave scattered signals from the biomarkers. It reveals that the nanostructured material with plasmonic nanobiosensor paves a fascinating platform towards early detection of cancer tumour and is anticipated to be exploited as a magnificent field in the future.
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Affiliation(s)
- Sathish Sugumaran
- Advanced Communication Engineering Centre (ACE), School of Computer and Communication Engineering, Universiti Malaysia Perlis, Kangar 01000, Perlis, Malaysia.
| | - Mohd Faizal Jamlos
- Advanced Communication Engineering Centre (ACE), School of Computer and Communication Engineering, Universiti Malaysia Perlis, Kangar 01000, Perlis, Malaysia
| | - Mohd Noor Ahmad
- School of Materials Engineering, Universiti Malaysia Perlis, Kangar 02600, Perlis, Malaysia
| | - Chandar Shekar Bellan
- Nanotechnology Research Lab, Department of Physics, Kongunadu Arts and Science College, G-N Mills, Coimbatore 641 029, Tamil Nadu, India
| | - Dominique Schreurs
- Department of Electrical Engineering, division ESAT-TELEMIC, KU Leuven, Belgium
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60
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Yavas O, Svedendahl M, Dobosz P, Sanz V, Quidant R. On-a-chip Biosensing Based on All-Dielectric Nanoresonators. NANO LETTERS 2017; 17:4421-4426. [PMID: 28616986 DOI: 10.1021/acs.nanolett.7b01518] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Nanophotonics has become a key enabling technology in biomedicine with great promises in early diagnosis and less invasive therapies. In this context, the unique capability of plasmonic noble metal nanoparticles to concentrate light on the nanometer scale has widely contributed to biosensing and enhanced spectroscopy. Recently, high-refractive index dielectric nanostructures featuring low loss resonances have been proposed as a promising alternative to nanoplasmonics, potentially offering better sensing performances along with full compatibility with the microelectronics industry. In this letter we report the first demonstration of biosensing with silicon nanoresonators integrated in state-of-the-art microfluidics. Our lab-on-a-chip platform enables detecting Prostate Specific Antigen (PSA) cancer marker in human serum with a sensitivity that meets clinical needs. These performances are directly compared with its plasmonic counterpart based on gold nanorods. Our work opens new opportunities in the development of future point-of-care devices toward a more personalized healthcare.
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Affiliation(s)
- Ozlem Yavas
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology , 08860 Castelldefels (Barcelona), Spain
| | - Mikael Svedendahl
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology , 08860 Castelldefels (Barcelona), Spain
| | - Paulina Dobosz
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology , 08860 Castelldefels (Barcelona), Spain
| | - Vanesa Sanz
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology , 08860 Castelldefels (Barcelona), Spain
| | - Romain Quidant
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology , 08860 Castelldefels (Barcelona), Spain
- ICREA-Institució Catalana de Recerca i Estudis Avançats , 08010 Barcelona, Spain
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61
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Mugade M, Patole M, Pokharkar V. Bioengineered mannan sulphate capped silver nanoparticles for accelerated and targeted wound healing: Physicochemical and biological investigations. Biomed Pharmacother 2017; 91:95-110. [DOI: 10.1016/j.biopha.2017.04.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 03/29/2017] [Accepted: 04/10/2017] [Indexed: 10/19/2022] Open
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62
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Rippa M, Castagna R, Tkachenko V, Zhou J, Petti L. Engineered nanopatterned substrates for high-sensitive localized surface plasmon resonance: an assay on biomacromolecules. J Mater Chem B 2017; 5:5473-5478. [PMID: 32264087 DOI: 10.1039/c7tb00777a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In this paper, we report on novel iso-Y-shaped-nanopillar based photonic crystals (PCs) engineered for plasmonic lab-on-a-chip advanced diagnostics. The iso-Y shaped units are selected on the basis of their plasmonic properties, analyzed numerically and experimentally. We show that by accurately choosing the nanopillar shape, dimensions and their geometrical disposal it is possible to obtain efficient optical 2D structures for biomolecule detection by high-sensitive localized surface plasmonic resonance (LSPR). In particular, an assay is realized by using bovine serum albumin (BSA), a widely recognized model for biosystem studies. BSA was simply deposited on a self-assembled monolayer (SAM) of 4-mercaptobenzoic acid (4-MBA) previously grown-up on the plasmonic substrate. We demonstrate that the geometries considered allow the design of LSPR nano-assays working in the visible-NIR region based on both intensity interrogation and the resonance peak shift permitting the sensing of BSA with a limit of detection in the order of picomoles (LOD = 233 pM).
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Affiliation(s)
- M Rippa
- Institute of Applied Sciences and Intelligent Systems "E. Caianiello" of CNR, 80072 Pozzuoli, Italy.
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63
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Abstract
Optical biosensors represent the most common type of biosensor. Here we provide a brief classification, a description of underlying principles of operation and their bioanalytical applications. The main focus is placed on the most widely used optical biosensors which are surface plasmon resonance (SPR)-based biosensors including SPR imaging and localized SPR. In addition, other optical biosensor systems are described, such as evanescent wave fluorescence and bioluminescent optical fibre biosensors, as well as interferometric, ellipsometric and reflectometric interference spectroscopy and surface-enhanced Raman scattering biosensors. The optical biosensors discussed here allow the sensitive and selective detection of a wide range of analytes including viruses, toxins, drugs, antibodies, tumour biomarkers and tumour cells.
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64
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Bhalla N, Lee D, Sathish S, Shen AQ. Dual-mode refractive index and charge sensing to investigate complex surface chemistry on nanostructures. NANOSCALE 2017; 9:547-554. [PMID: 27892593 DOI: 10.1039/c6nr07664e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This work presents a novel dual-mode charge and refractive index sensitive device integrated with nanoplasmonic islands, for the first time, on insulator-semiconductor junctions. The developed nano-metal-insulator semiconductor (nMIS) sensor facilitates simultaneous detection of charge and mass changes on the nanoislands due to the binding of biomolecules. The charging of the nanoislands is traced by using the capacitive field-effect electrolyte-metal-insulator-semiconductor structure and the refractive index changes are quantified by measuring the change in the localized surface plasmon resonances of the nanoislands. To demonstrate the performance of our dual-mode sensor we study the effect of oxygen plasma on immobilized biomolecules. As a case study biotinylated aptamers specific to interleukin 6 (IL-6) were chosen to conduct the immunoassay studies. We confirm that the adsorbed aptamers on the nanoislands do not lose their functionality after exposure to low energy oxygen plasma (<600 J). This finding is critical for the development of 'ready-to-use' microfluidic immunoassay platforms (glass-PDMS based) where immobilizing biomolecules on one of the substrates is often required prior to the bonding of glass and PDMS. Our results also open new opportunities for utilizing plasma to encapsulate biomolecules in polymers and hydrogels. More significantly, nMIS sensors can readily be adopted for multiplexed and high throughput label free immunoassay systems, further driving innovations in biomedical and healthcare research.
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Affiliation(s)
- Nikhil Bhalla
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa, Japan 904-0495.
| | - Doojin Lee
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa, Japan 904-0495.
| | - Shivani Sathish
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa, Japan 904-0495.
| | - Amy Q Shen
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa, Japan 904-0495.
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65
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Ahn S, Zhang P, Yu H, Lee S, Kang SH. Ultrasensitive Detection of α-Fetoprotein by Total Internal Reflection Scattering-Based Super-Resolution Microscopy for Superlocalization of Nano-Immunoplasmonics. Anal Chem 2016; 88:11070-11076. [DOI: 10.1021/acs.analchem.6b03069] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
| | | | - Hyunung Yu
- Nanobio
Fusion Research Center, Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
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66
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Antiochia R, Bollella P, Favero G, Mazzei F. Nanotechnology-Based Surface Plasmon Resonance Affinity Biosensors for In Vitro Diagnostics. Int J Anal Chem 2016; 2016:2981931. [PMID: 27594884 PMCID: PMC4995327 DOI: 10.1155/2016/2981931] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 07/05/2016] [Accepted: 07/10/2016] [Indexed: 01/17/2023] Open
Abstract
In the last decades, in vitro diagnostic devices (IVDDs) became a very important tool in medicine for an early and correct diagnosis, a proper screening of targeted population, and also assessing the efficiency of a specific therapy. In this review, the most recent developments regarding different configurations of surface plasmon resonance affinity biosensors modified by using several nanostructured materials for in vitro diagnostics are critically discussed. Both assembly and performances of the IVDDs tested in biological samples are reported and compared.
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Affiliation(s)
- Riccarda Antiochia
- Department of Chemistry and Drug Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Paolo Bollella
- Department of Chemistry and Drug Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Gabriele Favero
- Department of Chemistry and Drug Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Franco Mazzei
- Department of Chemistry and Drug Technologies, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
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Bhalla N, Sathish S, Shen AQ. Novel refractive index biosensing of microcontact printed molecules on lithium niobate. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2016; 2016:2095-2098. [PMID: 28268744 DOI: 10.1109/embc.2016.7591141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This work demonstrates, for the first time, the use of lithium niobate as a biosensor that detects local refractive index changes triggered by the presence of biomolecules on its surface. The sensitivity of the sensor was found to be 242±16 nm/RIU. As a case study, we immobilized proteins (IgG antibodies) using micro-contact printing to demonstrate sensing capabilities of the device. The validated proof of concept lays a foundation for developing lithium niobate based novel optical biosensors.
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68
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Chakkarapani SK, Zhang P, Ahn S, Kang SH. Total internal reflection plasmonic scattering-based fluorescence-free nanoimmunosensor probe for ultra-sensitive detection of cancer antigen 125. Biosens Bioelectron 2016; 81:23-31. [DOI: 10.1016/j.bios.2016.01.094] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 01/29/2016] [Accepted: 01/30/2016] [Indexed: 12/29/2022]
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69
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Wang LJ, Chang YC, Ge X, Osmanson AT, Du D, Lin Y, Li L. Smartphone Optosensing Platform Using a DVD Grating to Detect Neurotoxins. ACS Sens 2016. [DOI: 10.1021/acssensors.5b00204] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Li-Ju Wang
- School of Mechanical and
Materials Engineering, The Washington State University, Pullman, Washington 99164, United States
| | - Yu-Chung Chang
- School of Mechanical and
Materials Engineering, The Washington State University, Pullman, Washington 99164, United States
| | - Xiaoxiao Ge
- School of Mechanical and
Materials Engineering, The Washington State University, Pullman, Washington 99164, United States
| | - Allison T. Osmanson
- School of Mechanical and
Materials Engineering, The Washington State University, Pullman, Washington 99164, United States
| | - Dan Du
- School of Mechanical and
Materials Engineering, The Washington State University, Pullman, Washington 99164, United States
| | - Yuehe Lin
- School of Mechanical and
Materials Engineering, The Washington State University, Pullman, Washington 99164, United States
| | - Lei Li
- School of Mechanical and
Materials Engineering, The Washington State University, Pullman, Washington 99164, United States
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70
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Localized Surface Plasmon Resonance Biosensing: Current Challenges and Approaches. SENSORS 2015; 15:15684-716. [PMID: 26147727 PMCID: PMC4541850 DOI: 10.3390/s150715684] [Citation(s) in RCA: 222] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 06/13/2015] [Accepted: 06/23/2015] [Indexed: 12/16/2022]
Abstract
Localized surface plasmon resonance (LSPR) has emerged as a leader among label-free biosensing techniques in that it offers sensitive, robust, and facile detection. Traditional LSPR-based biosensing utilizes the sensitivity of the plasmon frequency to changes in local index of refraction at the nanoparticle surface. Although surface plasmon resonance technologies are now widely used to measure biomolecular interactions, several challenges remain. In this article, we have categorized these challenges into four categories: improving sensitivity and limit of detection, selectivity in complex biological solutions, sensitive detection of membrane-associated species, and the adaptation of sensing elements for point-of-care diagnostic devices. The first section of this article will involve a conceptual discussion of surface plasmon resonance and the factors affecting changes in optical signal detected. The following sections will discuss applications of LSPR biosensing with an emphasis on recent advances and approaches to overcome the four limitations mentioned above. First, improvements in limit of detection through various amplification strategies will be highlighted. The second section will involve advances to improve selectivity in complex media through self-assembled monolayers, “plasmon ruler” devices involving plasmonic coupling, and shape complementarity on the nanoparticle surface. The following section will describe various LSPR platforms designed for the sensitive detection of membrane-associated species. Finally, recent advances towards multiplexed and microfluidic LSPR-based devices for inexpensive, rapid, point-of-care diagnostics will be discussed.
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71
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Bhalla N, Formisano N, Miodek A, Jain A, Di Lorenzo M, Pula G, Estrela P. Plasmonic ruler on field-effect devices for kinase drug discovery applications. Biosens Bioelectron 2015; 71:121-128. [PMID: 25897881 DOI: 10.1016/j.bios.2015.04.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 04/02/2015] [Accepted: 04/07/2015] [Indexed: 10/23/2022]
Abstract
Protein kinases are cellular switches that mediate phosphorylation of proteins. Abnormal phosphorylation of proteins is associated with lethal diseases such as cancer. In the pharmaceutical industry, protein kinases have become an important class of drug targets. This study reports a versatile approach for the detection of protein phosphorylation. The change in charge of the myelin basic protein upon phosphorylation by the protein kinase C-alpha (PKC-α) in the presence of adenosine 5'-[γ-thio] triphosphate (ATP-S) was detected on gold metal-insulator-semiconductor (Au-MIS) capacitor structures. Gold nanoparticles (AuNPs) can then be attached to the thio-phosphorylated proteins, forming a Au-film/AuNP plasmonic couple. This was detected by a localized surface plasmon resonance (LSPR) technique alongside MIS capacitance. All reactions were validated using surface plasmon resonance technique and the interaction of AuNPs with the thio-phosphorylated proteins quantified by quartz crystal microbalance. The plasmonic coupling was also visualized by simulations using finite element analysis. The use of this approach in drug discovery applications was demonstrated by evaluating the response in the presence of a known inhibitor of PKC-α kinase. LSPR and MIS on a single platform act as a cross check mechanism for validating kinase activity and make the system robust to test novel inhibitors.
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Affiliation(s)
- Nikhil Bhalla
- Department of Electronic & Electrical Engineering, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom.
| | - Nello Formisano
- Department of Electronic & Electrical Engineering, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom.
| | - Anna Miodek
- Department of Electronic & Electrical Engineering, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom.
| | - Aditya Jain
- Department of Electrical and Computer Engineering, Iowa State University, Ames, IA 50011, USA.
| | - Mirella Di Lorenzo
- Department of Chemical Engineering, University of Bath, Bath BA2 7AY, United Kingdom.
| | - Giordano Pula
- Department of Pharmacy & Pharmacology, University of Bath, Bath BA2 7AY, United Kingdom.
| | - Pedro Estrela
- Department of Electronic & Electrical Engineering, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom.
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Protein phosphorylation detection using dual-mode field-effect devices and nanoplasmonic sensors. Sci Rep 2015; 5:8687. [PMID: 25732235 PMCID: PMC4346972 DOI: 10.1038/srep08687] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 01/27/2015] [Indexed: 01/25/2023] Open
Abstract
Phosphorylation by kinases is an important post-translational modification of proteins. It is a critical control for the regulation of vital cellular activities, and its dysregulation is implicated in several diseases. A common drug discovery approach involves, therefore, time-consuming screenings of large libraries of candidate compounds to identify novel inhibitors of protein kinases. In this work, we propose a novel method that combines localized surface plasmon resonance (LSPR) and electrolyte insulator semiconductor (EIS)-based proton detection for the rapid identification of novel protein kinase inhibitors. In particular, the selective detection of thiophosphorylated proteins by LSPR is achieved by changing their resonance properties via a pre-binding with gold nanoparticles. In parallel, the EIS field-effect structure allows the real-time electrochemical monitoring of the protein phosphorylation by detecting the release of protons associated with the kinases activity. This innovative combination of both field-effect and nanoplasmonic sensing makes the detection of protein phosphorylation more reliable and effective. As a result, the screening of protein kinase inhibitors becomes more rapid, sensitive, robust and cost-effective.
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