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Keriel NA, Delezoide C, Chauvin D, Korri-Youssoufi H, Lai ND, Ledoux-Rak I, Nguyen CT. Optofluidic Sensor Based on Polymer Optical Microresonators for the Specific, Sensitive and Fast Detection of Chemical and Biochemical Species. SENSORS (BASEL, SWITZERLAND) 2023; 23:7373. [PMID: 37687829 PMCID: PMC10490054 DOI: 10.3390/s23177373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/17/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023]
Abstract
The accurate, rapid, and specific detection of DNA strands in solution is becoming increasingly important, especially in biomedical applications such as the trace detection of COVID-19 or cancer diagnosis. In this work we present the design, elaboration and characterization of an optofluidic sensor based on a polymer-based microresonator which shows a quick response time, a low detection limit and good sensitivity. The device is composed of a micro-racetrack waveguide vertically coupled to a bus waveguide and embedded within a microfluidic circuit. The spectral response of the microresonator, in air or immersed in deionised water, shows quality factors up to 72,900 and contrasts up to 0.9. The concentration of DNA strands in water is related to the spectral shift of the microresonator transmission function, as measured at the inflection points of resonance peaks in order to optimize the signal-over-noise ratio. After functionalization by a DNA probe strand on the surface of the microresonator, a specific and real time measurement of the complementary DNA strands in the solution is realized. Additionally, we have inferred the dissociation constant value of the binding equilibrium of the two complementary DNA strands and evidenced a sensitivity of 16.0 pm/µM and a detection limit of 121 nM.
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Affiliation(s)
- Nolwenn-Amandine Keriel
- Laboratoire Lumière, Matière et Interfaces (LuMIn), Ecole Normale Superieure Paris Saclay, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 9024, CentraleSupelec, Institut d’Alembert, Université Paris Saclay, 4 Avenue des Sciences, 91190 Gif-sur-Yvette, France; (N.-A.K.); (N.D.L.); (C.-T.N.)
| | - Camille Delezoide
- Laboratoire Lumière, Matière et Interfaces (LuMIn), Ecole Normale Superieure Paris Saclay, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 9024, CentraleSupelec, Institut d’Alembert, Université Paris Saclay, 4 Avenue des Sciences, 91190 Gif-sur-Yvette, France; (N.-A.K.); (N.D.L.); (C.-T.N.)
| | - David Chauvin
- Laboratoire Lumière, Matière et Interfaces (LuMIn), Ecole Normale Superieure Paris Saclay, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 9024, CentraleSupelec, Institut d’Alembert, Université Paris Saclay, 4 Avenue des Sciences, 91190 Gif-sur-Yvette, France; (N.-A.K.); (N.D.L.); (C.-T.N.)
| | - Hafsa Korri-Youssoufi
- Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), Centre National de la Recherche Scientifique, Unité Mixte de Recherche 8182, Université Paris Saclay, 17 Avenue des Sciences, 91400 Orsay, France;
| | - Ngoc Diep Lai
- Laboratoire Lumière, Matière et Interfaces (LuMIn), Ecole Normale Superieure Paris Saclay, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 9024, CentraleSupelec, Institut d’Alembert, Université Paris Saclay, 4 Avenue des Sciences, 91190 Gif-sur-Yvette, France; (N.-A.K.); (N.D.L.); (C.-T.N.)
| | - Isabelle Ledoux-Rak
- Laboratoire Lumière, Matière et Interfaces (LuMIn), Ecole Normale Superieure Paris Saclay, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 9024, CentraleSupelec, Institut d’Alembert, Université Paris Saclay, 4 Avenue des Sciences, 91190 Gif-sur-Yvette, France; (N.-A.K.); (N.D.L.); (C.-T.N.)
| | - Chi-Thanh Nguyen
- Laboratoire Lumière, Matière et Interfaces (LuMIn), Ecole Normale Superieure Paris Saclay, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 9024, CentraleSupelec, Institut d’Alembert, Université Paris Saclay, 4 Avenue des Sciences, 91190 Gif-sur-Yvette, France; (N.-A.K.); (N.D.L.); (C.-T.N.)
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Ni Y, Chen X, Ling C, Zhu Z, Yue Y, Wang J, He A, Liu R. Electrochemical peptide nucleic acid functionalized α-Fe 2O 3/Fe 3O 4 nanosheets for detection of CYP2C19*2 gene. Mikrochim Acta 2023; 190:189. [PMID: 37083854 DOI: 10.1007/s00604-023-05781-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 04/04/2023] [Indexed: 04/22/2023]
Abstract
The CYP2C19*2 gene carriers and non-carriers are closely related to the dosage of clopidogrel. To correctly guide the use of clopidogrel and promote individualized therapy, an ultra-sensitive electrochemical biosensor was developed for the detection of CYP2C19*2 gene. The heterogeneous α-Fe2O3/Fe3O4 nanosheets were prepared via the hydrothermal-calcination process, and the preparation parameters were optimized. The average diameter and thickness of the nanosheets were approximately 150 nm and 53 nm, respectively; and the saturation magnetization was 80.2 emu/g. The α-Fe2O3/Fe3O4@Au nanosheets were prepared by sodium borohydride reduction method, and self-assembled to the electrode surface with magnetic field. Ultra-sensitive detection of CYP2C19*2 gene was realized through the recognition ability of strong single base mismatching of peptide nucleic acid and signal amplification effect of magnetic α-Fe2O3/Fe3O4@Au nanosheets. Under optimal detection conditions, the current had a good linear correlation with the negative logarithm of CYP2C19*2 gene concentration in the range 1 pM-1 nM, and the detection limit was 0.64 pM (S/N = 3). Meanwhile, the electrochemical signals of target DNA and incomplete complementary DNA were detected. The constructed biosensor exhibited good selectivity, reproducibility, and stability, providing a promising strategy for the detection of other gene mutations by electrochemical biosensors.
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Affiliation(s)
- Yun Ni
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Xiu Chen
- The People's Hospital of Danyang, Affiliated Danyang Hospital of Nantong University, Zhenjiang, 212300, People's Republic of China
| | - Chen Ling
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Ziye Zhu
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Yao Yue
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Jie Wang
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Aolin He
- Affiliated Kunshan Hospital, Jiangsu University, Suzhou, 215300, People's Republic of China.
| | - Ruijiang Liu
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, People's Republic of China.
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Hu C, Pan P, Huang H, Liu H. Cr-MOF-Based Electrochemical Sensor for the Detection of P-Nitrophenol. BIOSENSORS 2022; 12:813. [PMID: 36290950 PMCID: PMC9599216 DOI: 10.3390/bios12100813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/24/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
Cr-MOF nanoparticles were synthesized by a simple hydrothermal method, and their morphology and structure were characterized by SEM, TEM, and XRD techniques. The Cr-MOF modified glassy carbon electrode (Cr-MOF/GCE) was well constructed and served as an efficient electrochemical sensor for the detection of p-nitrophenol (p-NP). It was found that the Cr-MOF nanoparticles had significant electrocatalytic activity toward the reduction of p-NP. The Cr-MOF-based electrochemical sensor exhibited a low detection limit of 0.7 μM for p-NP in a wide range of 2~500 μM and could maintain excellent detection stability in a series of interfering media. The electrochemical sensor was also practically applied to detect p-NP in a local river and confirmed its validity, showing potential application prospects.
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Affiliation(s)
- Chao Hu
- School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Ping Pan
- Staff Hospital of Central South University, Central South University, Changsha 410083, China
| | - Haiping Huang
- School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Hongtao Liu
- Staff Hospital of Central South University, Central South University, Changsha 410083, China
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
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