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Sathya V, Deepa A, Sangeetha LK, Srinivasadesikan V, Lee SL, Padmini V. Development of Optical Biosensor for the Detection of Glutamine in Human Biofluids Using Merocyanine Dye. J Fluoresc 2022; 32:1389-1396. [PMID: 35420326 DOI: 10.1007/s10895-022-02937-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 03/24/2022] [Indexed: 10/18/2022]
Abstract
Merocyanine dye based fluorescent organic compound has been synthesized for the detection of glutamine. The probe showed remarkable fluorescent intensity with glutamine through ICT (Intermolecular Charge Transfer Mechanism). Hence, it is tested for the detection of glutamine using colorimetric and fluorimetric techniques in physiological and neutral pH (7.2). Under optimized experimental conditions, the probe detects glutamine selectively among other interfering biomolecules. The probe has showed a LOD (lower limit of detection) of 9.6 × 10-8 mol/L at the linear range 0-180 µM towards glutamine. The practical application of the probe is successfully tested in human biofluids.
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Affiliation(s)
- Vijayakumar Sathya
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, 625021, Tamilnadu, India
| | - Appadurai Deepa
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, 625021, Tamilnadu, India
| | - Lakshmi Kandhan Sangeetha
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, 625021, Tamilnadu, India
| | - Venkatesan Srinivasadesikan
- Division of Chemistry, Department of Sciences and Humanities, Vignan's Foundation for Science, Technology and Research, Vadlamudi, Guntur, 522 213, Andhra Pradesh, India
| | - Shyi-Long Lee
- Department of Chemistry and Biochemistry, National Chung-Cheng University, Chia-Yi, 621, Taiwan
| | - Vediappen Padmini
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, 625021, Tamilnadu, India.
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2
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Rea I, De Stefano L. Recent Advances on Diatom-Based Biosensors. SENSORS (BASEL, SWITZERLAND) 2019; 19:E5208. [PMID: 31795066 PMCID: PMC6929068 DOI: 10.3390/s19235208] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/12/2019] [Accepted: 11/20/2019] [Indexed: 01/09/2023]
Abstract
Porous materials showing some useful transducing features, i.e., any changes in their physical or chemical properties as a consequence of molecular interaction, are very attractive in the realization of sensors and biosensors. Diatom frustules have been gaining support for biosensors since they are made of nanostructured amorphous silica, but do not require any nano-fabrication step; their surface can be easily functionalized and customized for specific application; diatom frustules are photoluminescent, and they can be found in almost every pond of water on the Earth, thus assuring large and low-cost availability. In this review, the most recent advances in diatom-based biosensors are reported, and a perspective view on future developments is given.
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Affiliation(s)
| | - Luca De Stefano
- Institute for Microelectronics and Microsystems, National Research Council, Via P. Castellino 111, 80131 Napoli, Italy;
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3
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Ren R, Guo Z, Jia Z, Yang J, Kasabov NK, Li C. Speckle Noise Removal in Image-based Detection of Refractive Index Changes in Porous Silicon Microarrays. Sci Rep 2019; 9:15001. [PMID: 31628389 PMCID: PMC6802097 DOI: 10.1038/s41598-019-51435-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 08/30/2019] [Indexed: 11/19/2022] Open
Abstract
Based on porous silicon (PSi) microarray images, we propose a new method called the phagocytosis algorithm (PGY) for removing the influence of speckle noise on image gray values. In a theoretical analysis, speckle noise of different intensities is added to images, and a suitable denoising method is developed to restore the image gray level. This method can be used to reduce the influence of speckle noise on the gray values of PSi microarray images to improve the accuracy of detection and increase detection sensitivity. In experiments, the method is applied to detect refractive index changes in PSi microcavity images, and a good linear relationship between the gray level change and the refractive index change is obtained. In addition, the algorithm is applied to a PSi microarray image, and good results are obtained.
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Affiliation(s)
- Ruyong Ren
- College of Information Science and Engineering, Xinjiang University, Urumqi, 830046, China
| | - Zhiqing Guo
- College of Information Science and Engineering, Xinjiang University, Urumqi, 830046, China
| | - Zhenhong Jia
- College of Information Science and Engineering, Xinjiang University, Urumqi, 830046, China.
| | - Jie Yang
- Institute of Image Processing and Pattern Recognition, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Nikola K Kasabov
- Knowledge Engineering and Discovery Research Institute, Auckland University of Technology, Auckland, 1020, New Zealand
| | - Chuanxi Li
- School of Physical Science and Technology, Xinjiang University, Urumqi, 830046, China
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4
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Synthesis and Surface Modification of Nanostructured F-Doped ZnO: Toward a Transducer for Label-Free Optical Biosensing. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9163380] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this work, the surface of nanostructured fluorine-doped ZnO (nZnO·F) is functionalized with protein A (PrA), and used as a model biomolecule. The chemical procedure is characterized by several analytical techniques such as Fourier Transform Infrared Spectroscopy, water contact angle analysis, and fluorescence microscopy. The surface modification of nZnO·F by binding increasing concentrations of PrA is also investigated by two label-free optical techniques, i.e., the spectroscopic reflectometry and the steady-state photoluminescence. The results are compared with those obtained using undoped nZnO substrates in order to highlight the better performances of nZnO·F due to the fluorine doping. The results of this study pave the way for the design and realization of a ZnO-based nanostructured platform for label-free optical sensing.
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Porous Silicon-Based Aptasensors: The Next Generation of Label-Free Devices for Health Monitoring. Molecules 2019; 24:molecules24122216. [PMID: 31200538 PMCID: PMC6630495 DOI: 10.3390/molecules24122216] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/04/2019] [Accepted: 06/12/2019] [Indexed: 12/12/2022] Open
Abstract
Aptamers are artificial nucleic acid ligands identified and obtained from combinatorial libraries of synthetic nucleic acids through the in vitro process SELEX (systematic evolution of ligands by exponential enrichment). Aptamers are able to bind an ample range of non-nucleic acid targets with great specificity and affinity. Devices based on aptamers as bio-recognition elements open up a new generation of biosensors called aptasensors. This review focuses on some recent achievements in the design of advanced label-free optical aptasensors using porous silicon (PSi) as a transducer surface for the detection of pathogenic microorganisms and diagnostic molecules with high sensitivity, reliability and low limit of detection (LoD).
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6
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Bottari F, Moretto LM, Ugo P. Impedimetric sensing of the immuno-enzymatic reaction of gliadin with a collagen-modified electrode. Electrochem commun 2018. [DOI: 10.1016/j.elecom.2018.10.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Tieu T, Alba M, Elnathan R, Cifuentes‐Rius A, Voelcker NH. Advances in Porous Silicon–Based Nanomaterials for Diagnostic and Therapeutic Applications. ADVANCED THERAPEUTICS 2018. [DOI: 10.1002/adtp.201800095] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Terence Tieu
- Monash Institute of Pharmaceutical Sciences Monash University Parkville Campus, 381 Royal Parade Parkville Victoria 3052 Australia
- T. Tieu, Dr. M. Alba, Prof. N. H. Voelcker CSIRO Manufacturing Bayview Avenue Clayton Victoria 3168 Australia
| | - Maria Alba
- Monash Institute of Pharmaceutical Sciences Monash University Parkville Campus, 381 Royal Parade Parkville Victoria 3052 Australia
- T. Tieu, Dr. M. Alba, Prof. N. H. Voelcker CSIRO Manufacturing Bayview Avenue Clayton Victoria 3168 Australia
| | - Roey Elnathan
- Monash Institute of Pharmaceutical Sciences Monash University Parkville Campus, 381 Royal Parade Parkville Victoria 3052 Australia
| | - Anna Cifuentes‐Rius
- Monash Institute of Pharmaceutical Sciences Monash University Parkville Campus, 381 Royal Parade Parkville Victoria 3052 Australia
| | - Nicolas H. Voelcker
- Monash Institute of Pharmaceutical Sciences Monash University Parkville Campus, 381 Royal Parade Parkville Victoria 3052 Australia
- Prof. N. H. Voelcker Melbourne Centre for Nanofabrication Victorian Node of the Australian National Fabrication Facility 151 Wellington Road Clayton Victoria 3168 Australia
- T. Tieu, Dr. M. Alba, Prof. N. H. Voelcker CSIRO Manufacturing Bayview Avenue Clayton Victoria 3168 Australia
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8
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Funari R, Terracciano I, Della Ventura B, Ricci S, Cardi T, D'Agostino N, Velotta R. Label-Free Detection of Gliadin in Food by Quartz Crystal Microbalance-Based Immunosensor. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:1281-1289. [PMID: 28121432 DOI: 10.1021/acs.jafc.6b04830] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Gluten is a protein composite found in wheat and related grains including barley, rye, oat, and all their species and hybrids. Gluten matrix is a biomolecular network of gliadins and glutenins that contribute to the texture of pastries, breads, and pasta. Gliadins are mainly responsible for celiac disease, one of the most widespread food-related pathologies in Western world. In view of the importance of gliadin proteins, by combining the quartz crystal microbalance technology, a cheap and robust piezoelectric transducer, with the so-called photonic immobilization technique, an effective surface functionalization method that provides spatially oriented antibodies on gold substrates, we realized a sensitive and reliable biosensor for quantifying these analytes extracted from real samples in a very short time. The resulting immunosensor has a limit of detection of about 4 ppm and, more remarkably, shows excellent sensitivity in the range 7.5-15 ppm. This feature makes our device reliable and effective for practical applications since it is able to keep low the influence of false positives.
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Affiliation(s)
- Riccardo Funari
- Department of Physics Ettore Pancini, Università di Napoli Federico II , via Cintia, I-80126 Napoli, Italy
| | - Irma Terracciano
- Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Centro di Ricerca per l'Orticoltura , via dei Cavalleggeri 25, 84098 Pontecagnano Faiano, Italy
| | - Bartolomeo Della Ventura
- Department of Physics Ettore Pancini, Università di Napoli Federico II , via Cintia, I-80126 Napoli, Italy
| | - Sara Ricci
- Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Centro di Ricerca per l'Orticoltura , via dei Cavalleggeri 25, 84098 Pontecagnano Faiano, Italy
| | - Teodoro Cardi
- Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Centro di Ricerca per l'Orticoltura , via dei Cavalleggeri 25, 84098 Pontecagnano Faiano, Italy
| | - Nunzio D'Agostino
- Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Centro di Ricerca per l'Orticoltura , via dei Cavalleggeri 25, 84098 Pontecagnano Faiano, Italy
| | - Raffaele Velotta
- Department of Physics Ettore Pancini, Università di Napoli Federico II , via Cintia, I-80126 Napoli, Italy
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9
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Dardano P, Caliò A, Politi J, Rea I, Rendina I, De Stefano L. Optically monitored drug delivery patch based on porous silicon and polymer microneedles. BIOMEDICAL OPTICS EXPRESS 2016; 7:1645-55. [PMID: 27231611 PMCID: PMC4871071 DOI: 10.1364/boe.7.001645] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 02/09/2016] [Accepted: 02/22/2016] [Indexed: 05/28/2023]
Abstract
Fabrication and characterization of an optically monitored hybrid patch for local administration of drugs, based on polymeric micro-needles and a porous silicon free-standing membrane, are reported. The micro-needles are realized by an innovative photolithographic approach that allows fine tuning of geometrical parameters, using polyethylene glycol and a commercial photo-catalyzer. The porous silicon multilayer not only increases the storage of a relevant amount of the drug, but also offers a continuous, naked-eye monitoring of the drug delivery process. As a proof-of-concept experiment, we report our results on the release of a dye molecule (fluorescein, 332 Da) in a phosphate saline buffer.
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Affiliation(s)
- Principia Dardano
- National Research Council - Institute for Microelectronics and Microsystems, Via P. Castellino 111, 80131, Naples, Italy
| | - Alessandro Caliò
- National Research Council - Institute for Microelectronics and Microsystems, Via P. Castellino 111, 80131, Naples, Italy
- University of Naples Federico II - Department of Physical Science, Via Cinthia, 80100, Naples, Italy
| | - Jane Politi
- National Research Council - Institute for Microelectronics and Microsystems, Via P. Castellino 111, 80131, Naples, Italy
- University of Naples Federico II - Department of Chemical Science, Via Cinthia, 80100, Naples, Italy
| | - Ilaria Rea
- National Research Council - Institute for Microelectronics and Microsystems, Via P. Castellino 111, 80131, Naples, Italy
| | - Ivo Rendina
- National Research Council - Institute for Microelectronics and Microsystems, Via P. Castellino 111, 80131, Naples, Italy
| | - Luca De Stefano
- National Research Council - Institute for Microelectronics and Microsystems, Via P. Castellino 111, 80131, Naples, Italy
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10
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Scognamiglio V, Arduini F, Palleschi G, Rea G. Biosensing technology for sustainable food safety. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2014.07.007] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Bonnot K, Cuesta-Soto F, Rodrigo M, Varriale A, Sanchez N, D’Auria S, Spitzer D, Lopez-Royo F. Biophotonic Ring Resonator for Ultrasensitive Detection of DMMP As a Simulant for Organophosphorus Agents. Anal Chem 2014; 86:5125-30. [DOI: 10.1021/ac500903s] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Karine Bonnot
- Nanomatériaux
pour les Systèmes Sous Sollicitations Extrêmes (NS3E), French-German Research Institute of Saint-Louis, UMR 3208 CNRS/ISL/UDS, 68301 Saint-Louis, France
| | | | - Manuel Rodrigo
- DAS
Photonics, Ciudad Politécnica de la Innovación, 46022 Valencia, Spain
| | - Antonio Varriale
- Istituto di Biochimica delle Proteine, Consiglio Nazionale delle
Ricerche, 80131 Napoli, Italy
| | - Nuria Sanchez
- Nanophotonics
Technology Center, Universitat Politècnica de València, 46022 Valencia, Spain
| | - Sabato D’Auria
- Istituto di Biochimica delle Proteine, Consiglio Nazionale delle
Ricerche, 80131 Napoli, Italy
| | - Denis Spitzer
- Nanomatériaux
pour les Systèmes Sous Sollicitations Extrêmes (NS3E), French-German Research Institute of Saint-Louis, UMR 3208 CNRS/ISL/UDS, 68301 Saint-Louis, France
| | - Francisco Lopez-Royo
- Nanophotonics
Technology Center, Universitat Politècnica de València, 46022 Valencia, Spain
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12
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Chu PT, Wen HW. Sensitive detection and quantification of gliadin contamination in gluten-free food with immunomagnetic beads based liposomal fluorescence immunoassay. Anal Chim Acta 2013; 787:246-53. [PMID: 23830446 DOI: 10.1016/j.aca.2013.05.014] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Revised: 05/03/2013] [Accepted: 05/05/2013] [Indexed: 12/30/2022]
Abstract
Gliadin from wheat is a common food allergen that can induce baker's asthma, wheat-dependent exercise-induced anaphylaxis, atopic dermatitis, and celiac disease. This gliadin assay focuses on rapidly screen and check for gluten contamination in raw materials and in the gluten-free food production process, not only for wheat-sensitive patients but also for the industries producing gluten-free foodstuffs. The developed assay incorporates the use of anti-gliadin antibody-conjugated immunomagnetic beads (IMBs) to capture the gliadin in samples and fluorescent dyes-loaded immunoliposomal nanovesicles (IMLNs) to produce and enhance the detection signal. Hence, a sandwich complex is formed as "IMBs-gliadin-IMLNs". Experimental results indicate that this detection platform exhibits good sensitivity for gliadin with a detection limit as low as 0.6 μg mL(-1) of gliadin; as the polyclonal antibody showed slight cross-reactions with barley and rye. Excellent recovery rates were found ranging from 83.5 to 102.6% as testing the spiked samples. Moreover, the CV (%) of intra- and inter-assay of this developed assay are 4.8-10.6% and 3.5-9.9%, respectively. Based on a parallel analysis of twenty food samples, the results of this developed assay provide a good consistency with those of an AOAC-approved ELISA kit without any false-negative results. The proposed assay method is thus a highly promising alternative method for detecting the contamination of gliadin in the food industry.
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Affiliation(s)
- Pei-Tzu Chu
- Department of Food Science and Biotechnology, National Chung Hsing University, Taichung, Taiwan, ROC
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Chu PT, Lin CS, Chen WJ, Chen CF, Wen HW. Detection of gliadin in foods using a quartz crystal microbalance biosensor that incorporates gold nanoparticles. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:6483-6492. [PMID: 22694361 DOI: 10.1021/jf2047866] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
This work develops a label-free gliadin immunosensor that is based on changes in the frequency of a quartz crystal microbalance (QCM) chip. A higher sensitivity was obtained by applying 25 nm gold nanoparticles (AuNPs) to the surface of a bare QCM electrode. Subsequently, chicken anti-gliadin antibodies (IgY) were immobilized directly on the AuNP-modified surface by cross-linking amine groups in IgY with glutaraldehyde. Experimental results revealed that the change in frequency exhibited when 2 ppm gliadin was bound to the AuNP-modified electrode was 35 Hz (48%) greater than that of the bare gold electrode. The linear dynamic range in 60% ethanol was from 1 × 10(1) to 2 × 10(5) ppb gliadin, and the calculated limit of detection (LOD) was 8 ppb. The entire detection process was completed in 40 min and was highly repeatable. Additionally, the AuNP-modified QCM system generated results in the detection of gliadin in 10 commercial food products that were consistent with those obtained using an AOAC-approved gliadin kit. In conclusion, the QCM platform provides a potential alternative means of ensuring that people with wheat allergies and celiac patients have access to gliadin-free food.
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Affiliation(s)
- Pei-Tzu Chu
- Department of Food Science and Biotechnology, National Chung Hsing University, Taichung, Taiwan, Republic of China
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Strianese M, Staiano M, Ruggiero G, Labella T, Pellecchia C, D'Auria S. Fluorescence-based biosensors. Methods Mol Biol 2012; 875:193-216. [PMID: 22573441 DOI: 10.1007/978-1-61779-806-1_9] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The field of optical sensors has been a growing research area over the last three decades. A wide range of books and review articles has been published by experts in the field who have highlighted the advantages of optical sensing over other transduction methods. Fluorescence is by far the method most often applied and comes in a variety of schemes. Nowadays, one of the most common approaches in the field of optical biosensors is to combine the high sensitivity of fluorescence detection in combination with the high selectivity provided by ligand-binding proteins. In this chapter we deal with reviewing our recent results on the implementation of fluorescence-based sensors for monitoring environmentally hazardous gas molecules (e.g. nitric oxide, hydrogen sulfide). Reflectivity-based sensors, fluorescence correlation spectroscopy-based (FCS) systems, and sensors relying on the enhanced fluorescence emission on silver island films (SIFs) coupled to the total internal reflection fluorescence mode (TIRF) for the detection of gliadin and other prolamines considered toxic for celiac patients are also discussed herein.
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Affiliation(s)
- Maria Strianese
- Department of Chemistry, University of Salerno, Salerno, Italy
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15
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Laube T, Kergaravat S, Fabiano S, Hernández S, Alegret S, Pividori M. Magneto immunosensor for gliadin detection in gluten-free foodstuff: Towards food safety for celiac patients. Biosens Bioelectron 2011; 27:46-52. [DOI: 10.1016/j.bios.2011.06.006] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Revised: 05/29/2011] [Accepted: 06/10/2011] [Indexed: 11/24/2022]
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16
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Chen H, Zou R, Chen H, Wang N, Sun Y, Tian Q, Wu J, Chen Z, Hu J. Lightly doped single crystalline porous Si nanowires with improved optical and electrical properties. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm02476g] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Celiac disease diagnosis and gluten-free food analytical control. Anal Bioanal Chem 2010; 397:1743-53. [DOI: 10.1007/s00216-010-3753-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2010] [Revised: 04/09/2010] [Accepted: 04/13/2010] [Indexed: 01/14/2023]
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18
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Staiano M, Matveeva EG, Rossi M, Crescenzo R, Gryczynski Z, Gryczynski I, Iozzino L, Akopova I, D'Auria S. Nanostructured silver-based surfaces: new emergent methodologies for an easy detection of analytes. ACS APPLIED MATERIALS & INTERFACES 2009; 1:2909-2916. [PMID: 20356174 DOI: 10.1021/am900617p] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
In this work, we describe how to realize a new sensing platform for an easy and fast detection of analytes. In particular, we utilized enhanced fluorescence emission on silver island films (SIFs) coupled to the total internal reflection fluorescence mode (TIRF) to develop a new assay format for the detection of target analytes. Here, as an example, we report on the detection of the toxic peptides present in gliadin (Gli). Our assay was performed as follows: (1) gliadin was first captured on surfaces coated with anti-Gli antibodies; (2) the surfaces were then incubated with fluorophore-labeled anti-Gli antibodies; (3) the signal from the fluorophore-labeled anti-Gli antibody bound to the antigen was detected by TIRF. The system was examined on glass surfaces and on SIFs. We observed a relevant enhancement of the signal from SIFs compared to the signal from the glass substrate not modified with a SIF. In addition, the estimated detection limit (EDL) of our methodology was 60 ng/mL (or lower). This limit is therefore lower than the clinical cut-off for Gli presence in food for celiac patients. The advantage of our method is a reduced number of testing steps, which allows for easy detection of residual toxic peptides in food labeled as gluten free. The proposed technology can be easily expanded to the determination of different target analytes.
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Affiliation(s)
- Maria Staiano
- Laboratory for Molecular Sensing, Istituto di Biochimica delle Proteine-Consiglio Nazionale delle Richerche, Naples, Italy
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19
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Kilian KA, Böcking T, Gooding JJ. The importance of surface chemistry in mesoporous materials: lessons from porous silicon biosensors. Chem Commun (Camb) 2009:630-40. [DOI: 10.1039/b815449j] [Citation(s) in RCA: 141] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Nassef HM, Bermudo Redondo MC, Ciclitira PJ, Ellis HJ, Fragoso A, O’Sullivan CK. Electrochemical Immunosensor for Detection of Celiac Disease Toxic Gliadin in Foodstuff. Anal Chem 2008; 80:9265-71. [DOI: 10.1021/ac801620j] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Hossam M. Nassef
- Nanobiotechnology & Bioanalysis Group, Department of Chemical Engineering, Universitat Rovira i Virgili, Avinguda Països Catalans 26, 43007 Tarragona, Spain, Division of Nutritional Sciences, Rayne Institute, King’s College London, St. Thomas’ Hospital, Westminster Bridge Road, London SE1 7EH, U.K., and Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys 23, 08010 barcelona, Spain
| | - M. Carmen Bermudo Redondo
- Nanobiotechnology & Bioanalysis Group, Department of Chemical Engineering, Universitat Rovira i Virgili, Avinguda Països Catalans 26, 43007 Tarragona, Spain, Division of Nutritional Sciences, Rayne Institute, King’s College London, St. Thomas’ Hospital, Westminster Bridge Road, London SE1 7EH, U.K., and Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys 23, 08010 barcelona, Spain
| | - Paul J. Ciclitira
- Nanobiotechnology & Bioanalysis Group, Department of Chemical Engineering, Universitat Rovira i Virgili, Avinguda Països Catalans 26, 43007 Tarragona, Spain, Division of Nutritional Sciences, Rayne Institute, King’s College London, St. Thomas’ Hospital, Westminster Bridge Road, London SE1 7EH, U.K., and Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys 23, 08010 barcelona, Spain
| | - H. Julia Ellis
- Nanobiotechnology & Bioanalysis Group, Department of Chemical Engineering, Universitat Rovira i Virgili, Avinguda Països Catalans 26, 43007 Tarragona, Spain, Division of Nutritional Sciences, Rayne Institute, King’s College London, St. Thomas’ Hospital, Westminster Bridge Road, London SE1 7EH, U.K., and Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys 23, 08010 barcelona, Spain
| | - Alex Fragoso
- Nanobiotechnology & Bioanalysis Group, Department of Chemical Engineering, Universitat Rovira i Virgili, Avinguda Països Catalans 26, 43007 Tarragona, Spain, Division of Nutritional Sciences, Rayne Institute, King’s College London, St. Thomas’ Hospital, Westminster Bridge Road, London SE1 7EH, U.K., and Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys 23, 08010 barcelona, Spain
| | - Ciara K. O’Sullivan
- Nanobiotechnology & Bioanalysis Group, Department of Chemical Engineering, Universitat Rovira i Virgili, Avinguda Països Catalans 26, 43007 Tarragona, Spain, Division of Nutritional Sciences, Rayne Institute, King’s College London, St. Thomas’ Hospital, Westminster Bridge Road, London SE1 7EH, U.K., and Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys 23, 08010 barcelona, Spain
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Darewicz M, Dziuba J, Minkiewicz P. Celiac Disease—Background, Molecular, Bioinformatics and Analytical Aspects. FOOD REVIEWS INTERNATIONAL 2008. [DOI: 10.1080/87559120802089258] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Furbert P, Lu C, Winograd N, DeLouise L. Label-free optical detection of peptide synthesis on a porous silicon scaffold/sensor. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:2908-15. [PMID: 18247639 PMCID: PMC2573388 DOI: 10.1021/la703053h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Mesoporous porous silicon (PSi) microcavity sensors are used to conduct conventional solid-phase peptide synthesis. The sensor optical response provides a convenient means to monitor the synthesis reaction in a nondestructive manner. Measurements indicate that peptide synthesis occurs only when the PSi sensor/scaffold is amine-terminated using, for example, the amino silane or deprotected acid-labile Rink linker. Equivalent coupling efficiencies of the first amino acid to both amine terminations are observed. Kinetic studies indicate that coupling reactions are 90% complete in 1 h. Quantitative analysis of the optical response following the synthesis of homo-oligopeptides (4-mers) suggests that coupling efficiencies and/or optical thickness changes depend on the peptide length. The synthesis of the cell adhesive oligopeptide (RGD) was monitored by the optical sensor response and validated by the cell culture of primary dermal fibroblasts. Secondary ion mass spectrometry (SIMS) analysis successfully detected peptide on the silicon wafer adjacent to the PSi. Our findings suggest the potential to exploit the high surface area, efficient coupling, and intrinsic optical detection properties of PSi for label-free high-throughput screening.
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Affiliation(s)
- Patrick Furbert
- Department of Microbiology, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, New York 14642, USA
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D'Auria S, Staiano M, Varriale A, Gonnelli M, Marabotti A, Rossi M, Strambini GB. The differences in the microenvironment of the two tryptophan residues of the glutamine-binding protein fromEscherichia coli shed light on the binding properties and the structural dynamics of the protein. Proteins 2008; 71:743-50. [DOI: 10.1002/prot.21748] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Staiano M, Scognamiglio V, Mamone G, Rossi M, Parracino A, Rossi M, D'Auria S. Glutamine-Binding Protein fromEscherichiaColiSpecifically Binds a Wheat Gliadin Peptide. 2. Resonance Energy Transfer Studies Suggest a New Sensing Approach for an Easy Detection of Wheat Gliadin. J Proteome Res 2006; 5:2083-6. [PMID: 16944918 DOI: 10.1021/pr060258+] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this work is presented the first attempt to develop a fluorescence assay for detection of traces of gluten in food by utilizing the recombinant glutamine-binding protein (GlnBP) from E. coli. We found that GlnBP specifically binds the sequence of amino acids present both in gliadin and other prolamines classified as toxic for celiac patients. Affinity chromatography experiments together with mass spectrometry experiments demonstrated that GlnBP can bind the following amino acid sequence XXQPQPQQQQQQQQQQQQL. Sequence alignment experiments pointed out that this sequence is exclusively representative of the gliadin and the other prolamines considered toxic for celiac patients. These findings suggest the development of a competitive resonance energy transfer (RET) assay for an easy and rapid detection of this sequence in raw and cooked food.
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Affiliation(s)
- Maria Staiano
- Institute of Protein Biochemistry, C.N.R., Via Pietro Castellino, 111 80131, Naples, Italy
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