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Haxhari F, Savorani F, Rondanelli M, Cantaluppi E, Campanini L, Magnani E, Simonelli C, Gavoci G, Chiadò A, Sozzi M, Cavallini N, Chiodoni A, Gasparri C, Barrile GC, Cavioni A, Mansueto F, Mazzola G, Moroni A, Patelli Z, Pirola M, Tartara A, Guido D, Perna S, Magnaghi R. Endosperm structure and Glycemic Index of Japonica Italian rice varieties. Front Plant Sci 2024; 14:1303771. [PMID: 38250450 PMCID: PMC10796725 DOI: 10.3389/fpls.2023.1303771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 12/08/2023] [Indexed: 01/23/2024]
Abstract
Introduction Given that rice serves as a crucial staple food for a significant portion of the global population and with the increasing number of individuals being diagnosed with diabetes, a primary objective in genetic improvement is to identify and cultivate low Glycemic Index (GI) varieties. This must be done while ensuring the preservation of grain quality. Methods 25 Italian rice genotypes were characterized calculating their GI "in vivo" and, together with other 29 Italian and non-Italian genotypes they were studied to evaluate the grain inner structure through Field Emission Scanning Electron Microscopy (FESEM) technique. Using an ad-hoc developed algorithm, morphological features were extracted from the FESEM images, to be then inspected by means of multivariate data analysis methods. Results and Discussion Large variability was observed in GI values (49 to 92 with respect to glucose), as well as in endosperm morphological features. According to the percentage of porosity is possible to distinguish approximately among rice varieties having a crystalline grain (< 1.7%), those intended for the preparation of risotto (> 5%), and a third group having intermediate characteristics. Waxy rice varieties were not united by a certain porosity level, but they shared a low starch granules eccentricity. With reference to morphological features, rice varieties with low GI (<55) seem to be characterized by large starch granules and low porosity values. Our data testify the wide variability of Italian rice cultivation giving interesting information for future breeding programs, finding that the structure of the endosperm can be regarded as a specific characteristic of each variety.
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Affiliation(s)
- Filip Haxhari
- Centro Ricerche sul Riso, Ente Nazionale Risi, Castello D’Agogna, Italy
| | - Francesco Savorani
- Department of Applied Science and Technology (DISAT), Polytechnic University of Turin, Torino, Italy
| | - Mariangela Rondanelli
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, Pavia, Italy
| | - Enrico Cantaluppi
- Centro Ricerche sul Riso, Ente Nazionale Risi, Castello D’Agogna, Italy
| | - Luigi Campanini
- Centro Ricerche sul Riso, Ente Nazionale Risi, Castello D’Agogna, Italy
| | - Edoardo Magnani
- Centro Ricerche sul Riso, Ente Nazionale Risi, Castello D’Agogna, Italy
| | - Cinzia Simonelli
- Centro Ricerche sul Riso, Ente Nazionale Risi, Castello D’Agogna, Italy
| | - Gentian Gavoci
- Department of Applied Science and Technology (DISAT), Polytechnic University of Turin, Torino, Italy
| | - Alessandro Chiadò
- Department of Applied Science and Technology (DISAT), Polytechnic University of Turin, Torino, Italy
| | - Mattia Sozzi
- Department of Applied Science and Technology (DISAT), Polytechnic University of Turin, Torino, Italy
| | - Nicola Cavallini
- Department of Applied Science and Technology (DISAT), Polytechnic University of Turin, Torino, Italy
| | - Angelica Chiodoni
- Center for Sustainable Future Technologies @Polito, Istituto Italiano di Tecnologia, Torino, Italy
| | - Clara Gasparri
- Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona ‘‘Istituto Santa Margherita’’, University of Pavia, Pavia, Italy
| | - Gaetan Claude Barrile
- Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona ‘‘Istituto Santa Margherita’’, University of Pavia, Pavia, Italy
| | - Alessandro Cavioni
- Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona ‘‘Istituto Santa Margherita’’, University of Pavia, Pavia, Italy
| | - Francesca Mansueto
- Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona ‘‘Istituto Santa Margherita’’, University of Pavia, Pavia, Italy
| | - Giuseppe Mazzola
- Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona ‘‘Istituto Santa Margherita’’, University of Pavia, Pavia, Italy
| | - Alessia Moroni
- Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona ‘‘Istituto Santa Margherita’’, University of Pavia, Pavia, Italy
| | - Zaira Patelli
- Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona ‘‘Istituto Santa Margherita’’, University of Pavia, Pavia, Italy
| | - Martina Pirola
- Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona ‘‘Istituto Santa Margherita’’, University of Pavia, Pavia, Italy
| | - Alice Tartara
- Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona ‘‘Istituto Santa Margherita’’, University of Pavia, Pavia, Italy
| | - Davide Guido
- Fondazione Policlinico Universitario Agostino Gemelli, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Rome, Italy
| | - Simone Perna
- Department of Biology, College of Science, University of Bahrain, Zallaq, Bahrain
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Novara C, Montesi D, Bertone S, Paccotti N, Geobaldo F, Channab M, Angelini A, Rivolo P, Giorgis F, Chiadò A. Role of probe design and bioassay configuration in surface enhanced Raman scattering based biosensors for miRNA detection. J Colloid Interface Sci 2023; 649:750-760. [PMID: 37385040 DOI: 10.1016/j.jcis.2023.06.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 06/01/2023] [Accepted: 06/14/2023] [Indexed: 07/01/2023]
Abstract
The accurate design of labelled oligo probes for the detection of miRNA biomarkers by Surface Enhanced Raman Scattering (SERS) may improve the exploitation of the plasmonic enhancement. This work, thus, critically investigates the role of probe labelling configuration on the performance of SERS-based bioassays for miRNA quantitation. To this aim, highly efficient SERS substrates based on Ag-decorated porous silicon/PDMS membranes are functionalized according to bioassays relying on a one-step or two-step hybridization of the target miRNA with DNA probes. Then, the detection configuration is varied to evaluate the impact of different Raman reporters and their labelling position along the oligo sequence on bioassay sensitivity. At high miRNA concentration (100-10 nM), a significantly increased SERS intensity is detected when the reporters are located closer to the plasmonic surface compared to farther probe labelling positions. Counterintuitively, a levelling-off of the SERS intensity from the different configurations is recorded at low miRNA concentration. Such effect is attributed to the increased relative contribution of Raman hot-spots to the whole SERS signal, in line with the electric near field distribution simulated for a simplified model of the Ag nanostructures. However, the beneficial effect of reducing the reporter-to-surface distance is partially retained for a two-step hybridization assay thanks to the less sterically hindered environment in which the second hybridization occurs. The study thus demonstrates an improvement of the detection limit of the two-step assay by tuning the probe labelling position, but sheds at the same time light on the multiple factors affecting the sensitivity of SERS-based bioassays.
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Affiliation(s)
- Chiara Novara
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Turin, Italy.
| | - Daniel Montesi
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Turin, Italy
| | - Sofia Bertone
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Turin, Italy
| | - Niccolò Paccotti
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Turin, Italy
| | - Francesco Geobaldo
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Turin, Italy
| | - Marwan Channab
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Turin, Italy; Advanced Materials and Life Sciences, Istituto Nazionale di Ricerca Metrologica (INRiM), Strada delle Cacce 91, Turin 10135, Italy
| | - Angelo Angelini
- Advanced Materials and Life Sciences, Istituto Nazionale di Ricerca Metrologica (INRiM), Strada delle Cacce 91, Turin 10135, Italy
| | - Paola Rivolo
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Turin, Italy
| | - Fabrizio Giorgis
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Turin, Italy.
| | - Alessandro Chiadò
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Turin, Italy
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Paccotti N, Chiadò A, Novara C, Rivolo P, Montesi D, Geobaldo F, Giorgis F. Real-Time Monitoring of the In Situ Microfluidic Synthesis of Ag Nanoparticles on Solid Substrate for Reliable SERS Detection. Biosensors (Basel) 2021; 11:bios11120520. [PMID: 34940277 PMCID: PMC8699179 DOI: 10.3390/bios11120520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/10/2021] [Accepted: 12/13/2021] [Indexed: 05/12/2023]
Abstract
A sharpened control over the parameters affecting the synthesis of plasmonic nanostructures is often crucial for their application in biosensing, which, if based on surface-enhanced Raman spectroscopy (SERS), requires well-defined optical properties of the substrate. In this work, a method for the microfluidic synthesis of Ag nanoparticles (NPs) on porous silicon (pSi) was developed, focusing on achieving a fine control over the morphological characteristics and spatial distribution of the produced nanostructures to be used as SERS substrates. To this end, a pSi membrane was integrated in a microfluidic chamber in which the silver precursor solution was injected, allowing for the real-time monitoring of the reaction by UV-Vis spectroscopy. The synthesis parameters, such as the concentration of the silver precursor, the temperature, and the flow rate, were varied in order to study their effects on the final silver NPs' morphology. Variations in the flow rate affected the size distribution of the NPs, whereas both the temperature and the concentration of the silver precursor strongly influenced the rate of the reaction and the particle size. Consistently with the described trends, SERS tests using 4-MBA as a probe showed how the flow rate variation affected the SERS enhancement uniformity, and how the production of larger NPs, as a result of an increase in temperature or of the concentration of the Ag precursor, led to an increased SERS efficiency.
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Affiliation(s)
- Niccolò Paccotti
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy; (N.P.); (A.C.); (P.R.); (D.M.); (F.G.); (F.G.)
| | - Alessandro Chiadò
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy; (N.P.); (A.C.); (P.R.); (D.M.); (F.G.); (F.G.)
- Center for Sustainable Future Technologies @Polito, Istituto Italiano di Tecnologia, Corso Trento 21, 10129 Torino, Italy
| | - Chiara Novara
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy; (N.P.); (A.C.); (P.R.); (D.M.); (F.G.); (F.G.)
- Correspondence:
| | - Paola Rivolo
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy; (N.P.); (A.C.); (P.R.); (D.M.); (F.G.); (F.G.)
| | - Daniel Montesi
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy; (N.P.); (A.C.); (P.R.); (D.M.); (F.G.); (F.G.)
| | - Francesco Geobaldo
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy; (N.P.); (A.C.); (P.R.); (D.M.); (F.G.); (F.G.)
| | - Fabrizio Giorgis
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy; (N.P.); (A.C.); (P.R.); (D.M.); (F.G.); (F.G.)
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Chiadò A, Bosco F, Bardelli M, Simonelli L, Pedotti M, Marmo L, Varani L. Rational engineering of the lccβ T. versicolor laccase for the mediator-less oxidation of large polycyclic aromatic hydrocarbons. Comput Struct Biotechnol J 2021; 19:2213-2222. [PMID: 33995914 PMCID: PMC8099718 DOI: 10.1016/j.csbj.2021.03.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 03/08/2021] [Accepted: 03/12/2021] [Indexed: 01/10/2023] Open
Abstract
Computational-assisted protein engineering of the binding pocket of laccases. Mutants have activity increased up to ~ 300% in a broader pH range compared to the WT. Enhanced activity towards bulky PAHs in comparison to the WT enzyme. Ability to oxidize harmful PAH model compounds (dyes) that the WT enzyme cannot modify. Higher oxidation levels without mediators compared to the WT laccase with mediators.
Laccases are among the most sought-after biocatalyst for many green applications, from biosensors to pollution remedial, because they simply need oxygen from the air to oxidize and degrade a broad range of substrates. However, natural laccases cannot process large and toxic polycyclic aromatic hydrocarbons (PAHs) except in the presence of small molecules, called mediators, which facilitate the reaction but are inconvenient for practical on-field applications. Here we exploited structure-based protein engineering to generate rationally modified fungal laccases with increased ability to process bulky PAHs even in a mediator-less reaction. Computational simulations were used to estimate the impact of mutations in the enzymatic binding pocket on the ability to bind and oxidize a selected set of organic compounds. The most promising mutants were produced and their activity was evaluated by biochemical assays with phenolic and non-phenolic substrates. Mutant laccases engineered with a larger binding pocket showed enhanced activity (up to ~ 300% at pH 3.0) in a wider range of pH values (3.0–8.0) in comparison to the wild type enzyme. In contrast to the natural laccase, these mutants efficiently degraded bulky and harmful triphenylmethane dyes such as Ethyl Green (up to 91.64% after 24 h), even in the absence of mediators, with positive implications for the use of such modified laccases in many green chemistry processes (e.g. wastewater treatment).
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Affiliation(s)
- Alessandro Chiadò
- Department of Applied Science and Technology, Politecnico di Torino Corso, Duca degli Abruzzi 24, 10129 Torino, Italy
- Corresponding author.
| | - Francesca Bosco
- Department of Applied Science and Technology, Politecnico di Torino Corso, Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Marco Bardelli
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Via Vincenzo Vela 6, 6500, Bellinzona, Switzerland
| | - Luca Simonelli
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Via Vincenzo Vela 6, 6500, Bellinzona, Switzerland
| | - Mattia Pedotti
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Via Vincenzo Vela 6, 6500, Bellinzona, Switzerland
| | - Luca Marmo
- Department of Applied Science and Technology, Politecnico di Torino Corso, Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Luca Varani
- Institute for Research in Biomedicine, Università della Svizzera Italiana, Via Vincenzo Vela 6, 6500, Bellinzona, Switzerland
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Affiliation(s)
- Roberta Calmo
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy
- Clean Water Center, Politecnico di Torino, 10129 Torino, Italy
| | - Alessandro Chiadò
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy
| | - Sonia Fiorilli
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy
| | - Carlo Ricciardi
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy
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Romano A, Angelini A, Rossegger E, Palmara G, Castellino M, Frascella F, Chiappone A, Chiadò A, Sangermano M, Schlögl S, Roppolo I. Laser‐Triggered Writing and Biofunctionalization of Thiol‐Ene Networks. Macromol Rapid Commun 2020; 41:e2000084. [DOI: 10.1002/marc.202000084] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 12/24/2022]
Affiliation(s)
- Angelo Romano
- Department of Applied Science and TechnologyPolitecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
| | - Angelo Angelini
- Advanced Materials Metrology and Life SciencesIstituto Nazionale di Ricerca Metrologica Strada delle Cacce 91 Torino 10135 Italy
| | - Elisabeth Rossegger
- Polymer Competence Center Leoben GmbH Roseggerstrasse 12 Leoben 8700 Austria
| | - Gianluca Palmara
- Department of Applied Science and TechnologyPolitecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
| | - Micaela Castellino
- Department of Applied Science and TechnologyPolitecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
| | - Francesca Frascella
- Department of Applied Science and TechnologyPolitecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
| | - Annalisa Chiappone
- Department of Applied Science and TechnologyPolitecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
| | - Alessandro Chiadò
- Department of Applied Science and TechnologyPolitecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
| | - Marco Sangermano
- Department of Applied Science and TechnologyPolitecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
| | - Sandra Schlögl
- Polymer Competence Center Leoben GmbH Roseggerstrasse 12 Leoben 8700 Austria
| | - Ignazio Roppolo
- Department of Applied Science and TechnologyPolitecnico di Torino Corso Duca degli Abruzzi 24 Torino 10129 Italy
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Massaglia G, Frascella F, Chiadò A, Sacco A, Marasso SL, Cocuzza M, Pirri CF, Quaglio M. Electrospun Nanofibers: from Food to Energy by Engineered Electrodes in Microbial Fuel Cells. Nanomaterials (Basel) 2020; 10:E523. [PMID: 32183252 PMCID: PMC7153249 DOI: 10.3390/nano10030523] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/29/2020] [Accepted: 03/10/2020] [Indexed: 11/17/2022]
Abstract
Microbial fuel cells (MFCs) are bio-electrochemical devices able to directly transduce chemical energy, entrapped in an organic mass named fuel, into electrical energy through the metabolic activity of specific bacteria. During the last years, the employment of bio-electrochemical devices to study the wastewater derived from the food industry has attracted great interest from the scientific community. In the present work, we demonstrate the capability of exoelectrogenic bacteria used in MFCs to catalyze the oxidation reaction of honey, employed as a fuel. With the main aim to increase the proliferation of microorganisms onto the anode, engineered electrodes are proposed. Polymeric nanofibers, based on polyethylene oxide (PEO-NFs), were directly electrospun onto carbon-based material (carbon paper, CP) to obtain an optimized composite anode. The crucial role played by the CP/PEO-NFs anodes was confirmed by the increased proliferation of microorganisms compared to that reached on bare CP anodes, used as a reference material. A parameter named recovered energy (Erec) was introduced to determine the capability of bacteria to oxidize honey and was compared with the Erec obtained when sodium acetate was used as a fuel. CP/PEO-NFs anodes allowed achieving an Erec three times higher than the one reached with a bare carbon-based anode.
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Affiliation(s)
- Giulia Massaglia
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
- Center for Sustainable Future Technologies (CSFT)@Polito, Istituto Italiano di Tecnologia, Environment Park, Building B2 Via Livorno 60, 10144 Torino, Italy
| | - Francesca Frascella
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Alessandro Chiadò
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Adriano Sacco
- Center for Sustainable Future Technologies (CSFT)@Polito, Istituto Italiano di Tecnologia, Environment Park, Building B2 Via Livorno 60, 10144 Torino, Italy
| | - Simone Luigi Marasso
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
- IMEM-CNR, Parco Area delle Scienze 37, 43124 Parma, Italy
| | - Matteo Cocuzza
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
- IMEM-CNR, Parco Area delle Scienze 37, 43124 Parma, Italy
| | - Candido F Pirri
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
- Center for Sustainable Future Technologies (CSFT)@Polito, Istituto Italiano di Tecnologia, Environment Park, Building B2 Via Livorno 60, 10144 Torino, Italy
| | - Marzia Quaglio
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
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Fornasaro S, Alsamad F, Baia M, Batista de Carvalho LAE, Beleites C, Byrne HJ, Chiadò A, Chis M, Chisanga M, Daniel A, Dybas J, Eppe G, Falgayrac G, Faulds K, Gebavi H, Giorgis F, Goodacre R, Graham D, La Manna P, Laing S, Litti L, Lyng FM, Malek K, Malherbe C, Marques MPM, Meneghetti M, Mitri E, Mohaček-Grošev V, Morasso C, Muhamadali H, Musto P, Novara C, Pannico M, Penel G, Piot O, Rindzevicius T, Rusu EA, Schmidt MS, Sergo V, Sockalingum GD, Untereiner V, Vanna R, Wiercigroch E, Bonifacio A. Surface Enhanced Raman Spectroscopy for Quantitative Analysis: Results of a Large-Scale European Multi-Instrument Interlaboratory Study. Anal Chem 2020; 92:4053-4064. [PMID: 32045217 PMCID: PMC7997108 DOI: 10.1021/acs.analchem.9b05658] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
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Surface-enhanced
Raman scattering (SERS) is a powerful and sensitive
technique for the detection of fingerprint signals of molecules and
for the investigation of a series of surface chemical reactions. Many
studies introduced quantitative applications of SERS in various fields,
and several SERS methods have been implemented for each specific application,
ranging in performance characteristics, analytes used, instruments,
and analytical matrices. In general, very few methods have been validated
according to international guidelines. As a consequence, the application
of SERS in highly regulated environments is still considered risky,
and the perception of a poorly reproducible and insufficiently robust
analytical technique has persistently retarded its routine implementation.
Collaborative trials are a type of interlaboratory study (ILS) frequently
performed to ascertain the quality of a single analytical method.
The idea of an ILS of quantification with SERS arose within the framework
of Working Group 1 (WG1) of the EU COST Action BM1401 Raman4Clinics
in an effort to overcome the problematic perception of quantitative
SERS methods. Here, we report the first interlaboratory SERS study
ever conducted, involving 15 laboratories and 44 researchers. In this
study, we tried to define a methodology to assess the reproducibility
and trueness of a quantitative SERS method and to compare different
methods. In our opinion, this is a first important step toward a “standardization”
process of SERS protocols, not proposed by a single laboratory but
by a larger community.
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Affiliation(s)
- Stefano Fornasaro
- Raman Spectroscopy Lab, Department of Engineering and Architecture, University of Trieste, P.le Europa 1, 34100 Trieste, Italy
| | - Fatima Alsamad
- Université de Reims Champagne-Ardenne, BioSpecT-EA7506, UFR de Pharmacie, 51 rue Cognacq-Jay, 51097 Reims, France
| | - Monica Baia
- Faculty of Physics, Babes-Bolyai University, M. Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - Luís A E Batista de Carvalho
- Molecular-Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | | | - Hugh J Byrne
- FOCAS Research Institute, Technological University Dublin, Kevin Street, Dublin 8, Ireland
| | - Alessandro Chiadò
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Mihaela Chis
- Faculty of Physics, Babes-Bolyai University, M. Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - Malama Chisanga
- School of Chemistry, Manchester Institute of Biotechnology, University of Manchester, Manchester, United Kingdom M1 7DN
| | - Amuthachelvi Daniel
- Radiation and Environmental Science Centre, FOCAS Research Institute, Technological University Dublin, Kevin Street, Dublin 8, Ireland
| | - Jakub Dybas
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, ul. Gronostajowa 2, 30-384 Krakow, Poland
| | - Gauthier Eppe
- Mass Spectrometry Laboratory (MSLab), MolSys RU, University of Liège, Liège, Belgium
| | - Guillaume Falgayrac
- Univ. Lille, Univ. Littoral Côte d'Opale, EA 4490 - PMOI, F-59000 Lille, France
| | - Karen Faulds
- Bionanotechnology Research Section, Department of Pure and Applied Chemistry, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, United Kingdom
| | - Hrvoje Gebavi
- Centre of Excellence for Advanced Materials and Sensing Devices, Division of Materials Physics, Rudjer Boskovic Institute, Bijenicka c. 54, 10000 Zagreb, Croatia
| | - Fabrizio Giorgis
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Royston Goodacre
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, United Kingdom, L69 7ZB
| | - Duncan Graham
- Bionanotechnology Research Section, Department of Pure and Applied Chemistry, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, United Kingdom
| | - Pietro La Manna
- Institute on Polymers, Composites and Biomaterials, National Research Council of Italy, via Campi Flegrei, 34, Pozzuoli, Naples 80078, Italy
| | - Stacey Laing
- Bionanotechnology Research Section, Department of Pure and Applied Chemistry, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, United Kingdom
| | - Lucio Litti
- Nanostructures and Optics Laboratory, Department of Chemical Sciences, University of Padova, Via Marzolo 1 - 35131, Padova, Italy
| | - Fiona M Lyng
- Radiation and Environmental Science Centre, FOCAS Research Institute, Technological University Dublin, Kevin Street, Dublin 8, Ireland
| | - Kamilla Malek
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, ul. Gronostajowa 2, 30-384 Krakow, Poland
| | - Cedric Malherbe
- Mass Spectrometry Laboratory (MSLab), MolSys RU, University of Liège, Liège, Belgium
| | - Maria P M Marques
- Molecular-Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal.,Department of Life Sciences, University of Coimbra, 3000-456 Coimbra, Portugal
| | - Moreno Meneghetti
- Nanostructures and Optics Laboratory, Department of Chemical Sciences, University of Padova, Via Marzolo 1 - 35131, Padova, Italy
| | - Elisa Mitri
- Raman Spectroscopy Lab, Department of Engineering and Architecture, University of Trieste, P.le Europa 1, 34100 Trieste, Italy
| | - Vlasta Mohaček-Grošev
- Centre of Excellence for Advanced Materials and Sensing Devices, Division of Materials Physics, Rudjer Boskovic Institute, Bijenicka c. 54, 10000 Zagreb, Croatia
| | - Carlo Morasso
- Nanomedicine and Molecular Imaging Lab, Istituti Clinici Scientifici Maugeri IRCCS, Via Maugeri 4, 27100 Pavia, Italy
| | - Howbeer Muhamadali
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool, United Kingdom, L69 7ZB
| | - Pellegrino Musto
- Institute on Polymers, Composites and Biomaterials, National Research Council of Italy, via Campi Flegrei, 34, Pozzuoli, Naples 80078, Italy
| | - Chiara Novara
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Marianna Pannico
- Institute on Polymers, Composites and Biomaterials, National Research Council of Italy, via Campi Flegrei, 34, Pozzuoli, Naples 80078, Italy
| | - Guillaume Penel
- Univ. Lille, Univ. Littoral Côte d'Opale, EA 4490 - PMOI, F-59000 Lille, France
| | - Olivier Piot
- Université de Reims Champagne-Ardenne, BioSpecT-EA7506, UFR de Pharmacie, 51 rue Cognacq-Jay, 51097 Reims, France
| | - Tomas Rindzevicius
- Technical University of Denmark, Department of Health Technology, Ørsteds Plads, Building 345C, DK-2800 Kgs. Lyngby, Denmark
| | - Elena A Rusu
- Faculty of Physics, Babes-Bolyai University, M. Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | | | - Valter Sergo
- Raman Spectroscopy Lab, Department of Engineering and Architecture, University of Trieste, P.le Europa 1, 34100 Trieste, Italy.,Faculty of Health Sciences, University of Macau, SAR Macau, China
| | - Ganesh D Sockalingum
- Université de Reims Champagne-Ardenne, BioSpecT-EA7506, UFR de Pharmacie, 51 rue Cognacq-Jay, 51097 Reims, France
| | - Valérie Untereiner
- Université de Reims Champagne-Ardenne, BioSpecT-EA7506, UFR de Pharmacie, 51 rue Cognacq-Jay, 51097 Reims, France
| | - Renzo Vanna
- Nanomedicine and Molecular Imaging Lab, Istituti Clinici Scientifici Maugeri IRCCS, Via Maugeri 4, 27100 Pavia, Italy
| | - Ewelina Wiercigroch
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, ul. Gronostajowa 2, 30-384 Krakow, Poland
| | - Alois Bonifacio
- Raman Spectroscopy Lab, Department of Engineering and Architecture, University of Trieste, P.le Europa 1, 34100 Trieste, Italy
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9
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Chiadò A, Palmara G, Chiappone A, Tanzanu C, Pirri CF, Roppolo I, Frascella F. A modular 3D printed lab-on-a-chip for early cancer detection. Lab Chip 2020; 20:665-674. [PMID: 31939966 DOI: 10.1039/c9lc01108k] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A functional polymeric 3D device is produced in a single step printing process using a stereolithography based 3D printer. The photocurable formulation is designed for introducing a controlled amount of carboxyl groups (-COOH), in order to perform a covalent immobilization of bioreceptors on the device. The effectiveness of the application is demonstrated by performing an immunoassay for the detection of protein biomarkers involved in angiogenesis, whose role is crucial in the onset of cancer and in the progressive metastatic behavior of tumors. The detection of angiogenesis biomarkers is necessary for an early diagnosis of the pathology, allowing the employment of a less invasive therapy for the patient. In particular, vascular endothelial growth factor and angiopoietin-2 biomarkers are detected with a limit of detection of 11 ng mL-1 and 0.8 ng mL-1, respectively. This study shows how 3D microfabrication techniques, material characterization, and device development could be combined to obtain an engineered polymeric chip with intrinsic tuned functionalities.
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Affiliation(s)
- Alessandro Chiadò
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, 10129, Italy.
| | - Gianluca Palmara
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, 10129, Italy.
| | - Annalisa Chiappone
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, 10129, Italy.
| | - Claudia Tanzanu
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, 10129, Italy.
| | - Candido Fabrizio Pirri
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, 10129, Italy. and Center for Sustainable Future Technologies @Polito, Istituto Italiano di Tecnologia, Corso Trento 21, Torino 10129, Italy
| | - Ignazio Roppolo
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, 10129, Italy.
| | - Francesca Frascella
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, 10129, Italy.
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10
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Fantino E, Chiadò A, Quaglio M, Vaghi V, Cocuzza M, Marasso SL, Potrich C, Lunelli L, Pederzolli C, Pirri CF, Bongiovanni R, Vitale A. Photofabrication of polymeric biomicrofluidics: New insights into material selection. Mater Sci Eng C Mater Biol Appl 2019; 106:110166. [PMID: 31753377 DOI: 10.1016/j.msec.2019.110166] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/17/2019] [Accepted: 09/05/2019] [Indexed: 01/09/2023]
Abstract
We propose a versatile method to evaluate the suitability of polymers for the fabrication of microfluidic devices for biomedical applications, based on the concept that the selection and the design of convenient materials should involve different properties depending on the final microfluidic application. Here polymerase chain reaction (PCR) is selected as biological model and target microfluidic reaction. A class of photocured siloxanes is introduced as device building polymers and copolymerization is adopted as strategy to finely tune and optimize the final material properties. All-polymeric flexible devices are easily fabricated exploiting the rapidity of the photopolymerization reaction: they resist to thermal cycles without leakage or de-bonding (i.e., without separation of different chip parts made of the same material bonded together), show very limited water swelling and permeability, are bioinert and prevent the inhibition of the biochemical reaction. PCR is thus successfully conducted in the photocured microfluidic devices made with a specifically designed siloxane copolymer.
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Affiliation(s)
- Erika Fantino
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Alessandro Chiadò
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; Istituto Italiano di Tecnologia, Center for Sustainable Future Technologies @ PoliTo, Corso Trento 21, 10129 Torino, Italy
| | - Marzia Quaglio
- Istituto Italiano di Tecnologia, Center for Sustainable Future Technologies @ PoliTo, Corso Trento 21, 10129 Torino, Italy; Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Valentina Vaghi
- Fondazione Bruno Kessler, Laboratory of Biomolecular Sequence and Structure Analysis for Health, Via Sommarive 18, 38123 Povo, Trento, Italy
| | - Matteo Cocuzza
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; CNR-IMEM, Parco Area delle Scienze 37a, 43124 Parma, Italy
| | - Simone L Marasso
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; CNR-IMEM, Parco Area delle Scienze 37a, 43124 Parma, Italy
| | - Cristina Potrich
- Fondazione Bruno Kessler, Laboratory of Biomolecular Sequence and Structure Analysis for Health, Via Sommarive 18, 38123 Povo, Trento, Italy; CNR - Consiglio Nazionale delle Ricerche, Istituto di Biofisica, Via alla Cascata 56/C, 38123 Povo, Trento, Italy
| | - Lorenzo Lunelli
- Fondazione Bruno Kessler, Laboratory of Biomolecular Sequence and Structure Analysis for Health, Via Sommarive 18, 38123 Povo, Trento, Italy; CNR - Consiglio Nazionale delle Ricerche, Istituto di Biofisica, Via alla Cascata 56/C, 38123 Povo, Trento, Italy
| | - Cecilia Pederzolli
- Fondazione Bruno Kessler, Laboratory of Biomolecular Sequence and Structure Analysis for Health, Via Sommarive 18, 38123 Povo, Trento, Italy
| | - Candido F Pirri
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; Istituto Italiano di Tecnologia, Center for Sustainable Future Technologies @ PoliTo, Corso Trento 21, 10129 Torino, Italy
| | - Roberta Bongiovanni
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; INSTM - Politecnico di Torino Research Unit, Via Giusti 9, 50121 Firenze, Italy
| | - Alessandra Vitale
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; INSTM - Politecnico di Torino Research Unit, Via Giusti 9, 50121 Firenze, Italy.
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11
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Stassi S, Fantino E, Calmo R, Chiappone A, Gillono M, Scaiola D, Pirri CF, Ricciardi C, Chiadò A, Roppolo I. Polymeric 3D Printed Functional Microcantilevers for Biosensing Applications. ACS Appl Mater Interfaces 2017; 9:19193-19201. [PMID: 28530385 DOI: 10.1021/acsami.7b04030] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this study, we show for the first time the production of mass-sensitive polymeric biosensors by 3D printing technology with intrinsic functionalities. We also demonstrate the feasibility of mass-sensitive biosensors in the form of microcantilever in a one-step printing process, using acrylic acid as functional comonomer for introducing a controlled amount of functional groups that can covalently immobilize the biomolecules onto the polymer. The effectiveness of the application of 3D printed microcantilevers as biosensors is then demonstrated with their implementation in a standard immunoassay protocol. This study shows how 3D microfabrication techniques, material characterization, and biosensor development could be combined to obtain an engineered polymeric microcantilever with intrinsic functionalities. The possibility of tuning the composition of the starting photocurable resin with the addition of functional agents, and consequently controlling the functionalities of the 3D printed devices, paves the way to a new class of mass-sensing microelectromechanical system devices with intrinsic properties.
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Affiliation(s)
- Stefano Stassi
- Department of Applied Science and Technology, Politecnico di Torino , Corso Duca degli Abruzzi 24, Torino 10129, Italy
| | - Erika Fantino
- Department of Applied Science and Technology, Politecnico di Torino , Corso Duca degli Abruzzi 24, Torino 10129, Italy
| | - Roberta Calmo
- Department of Applied Science and Technology, Politecnico di Torino , Corso Duca degli Abruzzi 24, Torino 10129, Italy
| | - Annalisa Chiappone
- Center for Sustainable Future Technologies, Istituto Italiano di Tecnologia , Corso Trento 21, Torino 10129, Italy
| | - Matteo Gillono
- Department of Applied Science and Technology, Politecnico di Torino , Corso Duca degli Abruzzi 24, Torino 10129, Italy
- Center for Sustainable Future Technologies, Istituto Italiano di Tecnologia , Corso Trento 21, Torino 10129, Italy
| | - Davide Scaiola
- Department of Applied Science and Technology, Politecnico di Torino , Corso Duca degli Abruzzi 24, Torino 10129, Italy
| | - Candido Fabrizio Pirri
- Department of Applied Science and Technology, Politecnico di Torino , Corso Duca degli Abruzzi 24, Torino 10129, Italy
- Center for Sustainable Future Technologies, Istituto Italiano di Tecnologia , Corso Trento 21, Torino 10129, Italy
| | - Carlo Ricciardi
- Department of Applied Science and Technology, Politecnico di Torino , Corso Duca degli Abruzzi 24, Torino 10129, Italy
| | - Alessandro Chiadò
- Department of Applied Science and Technology, Politecnico di Torino , Corso Duca degli Abruzzi 24, Torino 10129, Italy
| | - Ignazio Roppolo
- Center for Sustainable Future Technologies, Istituto Italiano di Tecnologia , Corso Trento 21, Torino 10129, Italy
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12
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Stassi S, Chiadò A, Cauda V, Palmara G, Canavese G, Laurenti M, Ricciardi C. Functionalized ZnO nanowires for microcantilever biosensors with enhanced binding capability. Anal Bioanal Chem 2017; 409:2615-2625. [DOI: 10.1007/s00216-017-0204-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 12/22/2016] [Accepted: 01/11/2017] [Indexed: 01/31/2023]
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13
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Novara C, Chiadò A, Paccotti N, Catuogno S, Esposito CL, Condorelli G, De Franciscis V, Geobaldo F, Rivolo P, Giorgis F. SERS-active metal-dielectric nanostructures integrated in microfluidic devices for label-free quantitative detection of miRNA. Faraday Discuss 2017; 205:271-289. [DOI: 10.1039/c7fd00140a] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
In this work, SERS-based microfluidic PDMS chips integrating silver-coated porous silicon membranes were used for the detection and quantitation of microRNAs (miRNAs), which consist of short regulatory non-coding RNA sequences typically over- or under-expressed in connection with several diseases such as oncogenesis. In detail, metal–dielectric nanostructures which provide noticeable Raman enhancements were functionalized according to a biological protocol, adapted and optimized from an enzyme-linked immunosorbent assay (ELISA), for the detection of miR-222. Two sets of experiments based on different approaches were designed and performed, yielding a critical comparison. In the first one, the labelled target miRNA is revealed through hybridization to a complementary thiolated DNA probe, immobilized on the silver nanoparticles. In the second one, the probe is halved into shorter strands (half1 and half2) that interact with the complementary miRNA in two steps of hybridization. Such an approach, taking advantage of the Raman labelling of half2, provides a label-free analysis of the target. After suitable optimisation of the procedures, two calibration curves allowing quantitative measurements were obtained and compared on the basis of the SERS maps acquired on the samples loaded with several miRNA concentrations. The selectivity of the two-step assay was confirmed by the detection of target miR-222 mixed with different synthetic oligos, simulating the hybridization interference coming from similar sequences in real biological samples. Finally, that protocol was applied to the analysis of miR-222 in cellular extracts using an optofluidic multichamber biosensor, confirming the potentialities of SERS-based microfluidics for early-cancer diagnosis.
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Affiliation(s)
- Chiara Novara
- Department of Applied Science and Technology
- Politecnico di Torino
- Turin
- Italy
| | - Alessandro Chiadò
- Department of Applied Science and Technology
- Politecnico di Torino
- Turin
- Italy
| | - Niccolò Paccotti
- Department of Applied Science and Technology
- Politecnico di Torino
- Turin
- Italy
| | - Silvia Catuogno
- Institute of Endocrinology and Experimental Oncology of Italian National Research Council
- Naples
- Italy
| | - Carla Lucia Esposito
- Institute of Endocrinology and Experimental Oncology of Italian National Research Council
- Naples
- Italy
| | - Gerolama Condorelli
- Institute of Endocrinology and Experimental Oncology of Italian National Research Council
- Naples
- Italy
- Department of Molecular Medicine and Medical Biotechnology
- “Federico II” University of Naples
| | - Vittorio De Franciscis
- Institute of Endocrinology and Experimental Oncology of Italian National Research Council
- Naples
- Italy
| | - Francesco Geobaldo
- Department of Applied Science and Technology
- Politecnico di Torino
- Turin
- Italy
| | - Paola Rivolo
- Department of Applied Science and Technology
- Politecnico di Torino
- Turin
- Italy
| | - Fabrizio Giorgis
- Department of Applied Science and Technology
- Politecnico di Torino
- Turin
- Italy
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14
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Chiadò A, Novara C, Lamberti A, Geobaldo F, Giorgis F, Rivolo P. Immobilization of Oligonucleotides on Metal-Dielectric Nanostructures for miRNA Detection. Anal Chem 2016; 88:9554-9563. [DOI: 10.1021/acs.analchem.6b02186] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Alessandro Chiadò
- Department
of Applied Science
and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24 10129, Torino, Italy
| | - Chiara Novara
- Department
of Applied Science
and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24 10129, Torino, Italy
| | - Andrea Lamberti
- Department
of Applied Science
and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24 10129, Torino, Italy
| | - Francesco Geobaldo
- Department
of Applied Science
and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24 10129, Torino, Italy
| | - Fabrizio Giorgis
- Department
of Applied Science
and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24 10129, Torino, Italy
| | - Paola Rivolo
- Department
of Applied Science
and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24 10129, Torino, Italy
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15
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Chiadò A, Palmara G, Ricciardi S, Frascella F, Castellino M, Tortello M, Ricciardi C, Rivolo P. Optimization and characterization of a homogeneous carboxylic surface functionalization for silicon-based biosensing. Colloids Surf B Biointerfaces 2016; 143:252-259. [DOI: 10.1016/j.colsurfb.2016.03.048] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 03/10/2016] [Accepted: 03/17/2016] [Indexed: 11/16/2022]
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16
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Frascella F, Ricciardi S, Pasquardini L, Potrich C, Angelini A, Chiadò A, Pederzolli C, De Leo N, Rivolo P, Pirri CF, Descrovi E. Enhanced fluorescence detection of miRNA-16 on a photonic crystal. Analyst 2016; 140:5459-63. [PMID: 26140547 DOI: 10.1039/c5an00889a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a novel sensing method for fluorescence-labelled microRNAs (miRNAs) spotted on an all-dielectric photonic structure. Such a photonic structure provides an enhanced excitation and a directional beaming of the emitted fluorescence, resulting in a significant improvement of the overall signal collected. As a result, the Limit of Detection (LoD) is demonstrated to decrease by a factor of about 50. A compact read-out system allows a wide-field imaging-based detection, with little or no optical alignment issues, which makes this approach particularly interesting for further development for example in microarray-type bioassays.
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Affiliation(s)
- F Frascella
- Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy.
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17
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Novara C, Lamberti A, Chiadò A, Virga A, Rivolo P, Geobaldo F, Giorgis F. Surface-enhanced Raman spectroscopy on porous silicon membranes decorated with Ag nanoparticles integrated in elastomeric microfluidic chips. RSC Adv 2016. [DOI: 10.1039/c5ra26746c] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An elastomeric microfluidic chip integrating SERS active silver-coated porous silicon membranes is developed, which performs label free and calibrated SERS analysis in a multi-analyte configuration.
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Affiliation(s)
- Chiara Novara
- Department of Applied Science and Technology
- Politecnico di Torino
- Torino
- Italy
| | - Andrea Lamberti
- Department of Applied Science and Technology
- Politecnico di Torino
- Torino
- Italy
| | - Alessandro Chiadò
- Department of Applied Science and Technology
- Politecnico di Torino
- Torino
- Italy
| | - Alessandro Virga
- Department of Applied Science and Technology
- Politecnico di Torino
- Torino
- Italy
| | - Paola Rivolo
- Department of Applied Science and Technology
- Politecnico di Torino
- Torino
- Italy
| | - Francesco Geobaldo
- Department of Applied Science and Technology
- Politecnico di Torino
- Torino
- Italy
| | - Fabrizio Giorgis
- Department of Applied Science and Technology
- Politecnico di Torino
- Torino
- Italy
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18
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Chiadò A, Varani L, Bosco F, Marmo L. Opening Study on the Development of a New Biosensor for Metal Toxicity Based on Pseudomonas fluorescens Pyoverdine. Biosensors (Basel) 2013; 3:385-99. [PMID: 25586414 PMCID: PMC4263567 DOI: 10.3390/bios3040385] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 11/29/2013] [Accepted: 12/04/2013] [Indexed: 01/01/2023]
Abstract
To date, different kinds of biosensing elements have been used effectively for environmental monitoring. Microbial cells seem to be well-suited for this task: they are cheap, adaptable to variable field conditions and give a measurable response to a broad number of chemicals. Among different pollutants, heavy metals are still a major problem for the environment. A reasonable starting point for the selection of a biorecognition element to develop a biosensor for metals could be that of a microorganism that exhibits good mechanisms to cope with metals. Pseudomonads are characterized by the secretion of siderophores (e.g., pyoverdine), low-molecular weight compounds that chelate Fe3+ during iron starvation. Pyoverdine is easily detected by colorimetric assay, and it is suitable for simple online measurements. In this work, in order to evaluate pyoverdine as a biorecognition element for metal detection, the influence of metal ions (Fe3+, Cu2+, Zn2+), but also of temperature, pH and nutrients, on microbial growth and pyoverdine regulation has been studied in P. fluorescens. Each of these variables has been shown to influence the synthesis of siderophore: for instance, the lower the temperature, the higher the production of pyoverdine. Moreover, the concentration of pyoverdine produced in the presence of metals has been compared with the maximum allowable concentrations indicated in international regulations (e.g., 98/83/EC), and a correlation that could be useful to build a colorimetric biosensor has been observed.
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Affiliation(s)
- Alessandro Chiadò
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129, Torino, Italy.
| | - Luca Varani
- Institute for Research in Biomedicine (IRB), Via Vincenzo Vela 6, 6500, Bellinzona (CH), Switzerland.
| | - Francesca Bosco
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129, Torino, Italy.
| | - Luca Marmo
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129, Torino, Italy.
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