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Sabek J, Torrijos-Morán L, Griol A, Díaz Betancor Z, Bañuls Polo MJ, Maquieira Á, García-Rupérez J. Real Time Monitoring of a UV Light-Assisted Biofunctionalization Protocol Using a Nanophotonic Biosensor. BIOSENSORS-BASEL 2018; 9:bios9010006. [PMID: 30598030 PMCID: PMC6468802 DOI: 10.3390/bios9010006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Revised: 12/12/2018] [Accepted: 12/24/2018] [Indexed: 12/27/2022]
Abstract
A protocol for the covalent biofunctionalization of silicon-based biosensors using a UV light-induced thiol–ene coupling (TEC) reaction has been developed. This biofunctionalization approach has been used to immobilize half antibodies (hIgG), which have been obtained by means of a tris(2-carboxyethyl)phosphine (TCEP) reduction at the hinge region, to the surface of a vinyl-activated silicon-on-insulator (SOI) nanophotonic sensing chip. The response of the sensing structures within the nanophotonic chip was monitored in real time during the biofunctionalization process, which has allowed us to confirm that the bioconjugation of the thiol-terminated bioreceptors onto the vinyl-activated sensing surface is only initiated upon UV light photocatalysis.
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Affiliation(s)
- Jad Sabek
- Nanophotonics Technology Center, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain.
| | - Luis Torrijos-Morán
- Nanophotonics Technology Center, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain.
| | - Amadeu Griol
- Nanophotonics Technology Center, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain.
| | - Zeneida Díaz Betancor
- Departamento de Química, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico IDM, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain.
| | - María-José Bañuls Polo
- Departamento de Química, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico IDM, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain.
| | - Ángel Maquieira
- Departamento de Química, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico IDM, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain.
| | - Jaime García-Rupérez
- Nanophotonics Technology Center, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain.
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Ruiz-Tórtola Á, Prats-Quílez F, González-Lucas D, Bañuls MJ, Maquieira Á, Wheeler G, Dalmay T, Griol A, Hurtado J, Bohlmann H, Götzen R, García-Rupérez J. Experimental study of the evanescent-wave photonic sensors response in presence of molecular beacon conformational changes. JOURNAL OF BIOPHOTONICS 2018; 11:e201800030. [PMID: 29664230 DOI: 10.1002/jbio.201800030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 04/12/2018] [Indexed: 05/20/2023]
Abstract
An experimental study of the influence of the conformational change suffered by molecular beacon (MB) probes-upon the biorecognition of nucleic acid target oligonucleotides over evanescent wave photonic sensors-is reported. To this end, high sensitivity photonic sensors based on silicon photonic bandgap (PBG) structures were used, where the MB probes were immobilized via their 5' termination. Those MBs incorporate a biotin moiety close to their 3' termination in order to selectively bind a streptavidin molecule to them. The different photonic sensing responses obtained toward the target oligonucleotide detection, when the streptavidin molecule was bound to the MB probes or not, demonstrate the conformational change suffered by the MB upon hybridization, which promotes the displacement of the streptavidin molecule away from the surface of the photonic sensing structure.
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Affiliation(s)
- Ángela Ruiz-Tórtola
- Nanophotonics Technology Center, Universitat Politècnica de València, Valencia, Spain
| | | | - Daniel González-Lucas
- Departamento de Química, IDM, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Universitat Politècnica de València, Valencia, Spain
| | - María-José Bañuls
- Departamento de Química, IDM, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Universitat Politècnica de València, Valencia, Spain
| | - Ángel Maquieira
- Departamento de Química, IDM, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Universitat Politècnica de València, Valencia, Spain
| | - Guy Wheeler
- School of Biological Sciences, University of East Anglia, Norwich, UK
| | - Tamas Dalmay
- School of Biological Sciences, University of East Anglia, Norwich, UK
| | - Amadeu Griol
- Nanophotonics Technology Center, Universitat Politècnica de València, Valencia, Spain
| | - Juan Hurtado
- Nanophotonics Technology Center, Universitat Politècnica de València, Valencia, Spain
| | - Helge Bohlmann
- microTEC Gesellschaft für Mikrotechnologie mbH, Duisburg, Germany
| | - Reiner Götzen
- microTEC Gesellschaft für Mikrotechnologie mbH, Duisburg, Germany
| | - Jaime García-Rupérez
- Nanophotonics Technology Center, Universitat Politècnica de València, Valencia, Spain
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3
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Ruiz-Tórtola Á, Prats-Quílez F, González-Lucas D, Bañuls MJ, Maquieira Á, Wheeler G, Dalmay T, Griol A, Hurtado J, García-Rupérez J. High sensitivity and label-free oligonucleotides detection using photonic bandgap sensing structures biofunctionalized with molecular beacon probes. BIOMEDICAL OPTICS EXPRESS 2018; 9:1717-1727. [PMID: 29675313 PMCID: PMC5905917 DOI: 10.1364/boe.9.001717] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/13/2018] [Accepted: 01/24/2018] [Indexed: 05/20/2023]
Abstract
A label-free sensor, based on the combination of silicon photonic bandgap (PBG) structures with immobilized molecular beacon (MB) probes, is experimentally developed. Complementary target oligonucleotides are specifically recognized through hybridization with the MB probes on the surface of the sensing structure. This combination of PBG sensing structures and MB probes demonstrates an extremely high sensitivity without the need for complex PCR-based amplification or labelling methods.
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Affiliation(s)
- Ángela Ruiz-Tórtola
- Nanophotonics Technology Center, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Francisco Prats-Quílez
- Nanophotonics Technology Center, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Daniel González-Lucas
- IDM, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Departamento de Química, Universitat Politècnica de València, 46022 Valencia, Spain
| | - María-José Bañuls
- IDM, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Departamento de Química, Universitat Politècnica de València, 46022 Valencia, Spain
| | - Ángel Maquieira
- IDM, Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Departamento de Química, Universitat Politècnica de València, 46022 Valencia, Spain
| | - Guy Wheeler
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK
| | - Tamas Dalmay
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK
| | - Amadeu Griol
- Nanophotonics Technology Center, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Juan Hurtado
- Nanophotonics Technology Center, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
| | - Jaime García-Rupérez
- Nanophotonics Technology Center, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
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Alonso R, Jiménez-Meneses P, García-Rupérez J, Bañuls MJ, Maquieira Á. Thiol–ene click chemistry towards easy microarraying of half-antibodies. Chem Commun (Camb) 2018; 54:6144-6147. [DOI: 10.1039/c8cc01369a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
UV light catalyses in a few seconds the thiol–ene coupling reaction between half-antibodies and vinyl functionalized surfaces, providing high performance microarrays.
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Affiliation(s)
- Rafael Alonso
- Departamento de Química
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM)
- Universitat Politècnica de València
- Universitat de València
- Valencia
| | - Pilar Jiménez-Meneses
- Departamento de Química
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM)
- Universitat Politècnica de València
- Universitat de València
- Valencia
| | | | - María-José Bañuls
- Departamento de Química
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM)
- Universitat Politècnica de València
- Universitat de València
- Valencia
| | - Ángel Maquieira
- Departamento de Química
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM)
- Universitat Politècnica de València
- Universitat de València
- Valencia
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