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López L, Martínez LM, Caicedo JR, Fernández-Vega L, Cunci L. Measurement of Neuropeptide Y in Aptamer-Modified Planar Electrodes. Electrochim Acta 2024; 488:144243. [PMID: 38654828 PMCID: PMC11034791 DOI: 10.1016/j.electacta.2024.144243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Electrochemical impedance spectroscopy (EIS) is a powerful technique for studying the interaction at electrode/solution interfaces. The adoption of EIS for obtaining analytical signals in biosensors based on aptamers is gaining popularity because of its advantageous characteristics for molecular recognition. Neuropeptide Y (NPY), the most abundant neuropeptide in the body, plays a crucial role with its stress-relieving properties. Quantitative measurement of NPY is imperative for understanding its role in these and other biological processes. Although aptamer-modified electrodes for NPY detection using EIS present a promising alternative, the correlation between the data obtained and the adsorption process on the electrodes is not fully understood. Various studies utilize the change in charge transfer resistance when employing an active redox label. In contrast, label-free measurement relies on changes in capacitance. To address these challenges, we focused on the interaction between aptamer-modified planar electrodes and their target, NPY. We proposed utilizing -ω*Zimag as the analytical signal, which facilitated the analysis of the adsorption process using an analogous Langmuir isotherm equation. This approach differs from implantable microelectrodes, which adhere to the Freundlich adsorption isotherm. Notably, our method obviates the need for a redox label and enables the detection of NPY at concentrations as low as 20 pg/mL. This methodology demonstrated exceptional selectivity, exhibiting a signal difference of over 20-to-1 against potential interfering molecules.
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Affiliation(s)
- Luis López
- Department of Chemistry, University of Puerto Rico – Rio Piedras, 17 Ave Universidad Ste 1701, San Juan, Puerto Rico 00931, United States
| | - Lyza M. Martínez
- Department of Chemistry, Universidad Ana G. Méndez – Gurabo, Carr. 189, Km 3.3, Gurabo, Puerto Rico 00778, United States
| | - Jaileen R. Caicedo
- Department of Chemistry, University of Puerto Rico – Rio Piedras, 17 Ave Universidad Ste 1701, San Juan, Puerto Rico 00931, United States
| | - Lauren Fernández-Vega
- Department of Chemistry, Universidad Ana G. Méndez – Gurabo, Carr. 189, Km 3.3, Gurabo, Puerto Rico 00778, United States
- Department of Chemistry, Universidad Ana G. Méndez – Cupey, 1399 Ave Ana G Mendez, Cupey, Puerto Rico 00925, United States
| | - Lisandro Cunci
- Department of Chemistry, University of Puerto Rico – Rio Piedras, 17 Ave Universidad Ste 1701, San Juan, Puerto Rico 00931, United States
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2
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Yeh YH, Lin YS, Chiu TC, Hu CC. A Ratiometric Fluorescent Sensor for Penicillin G Based on Color-Tunable Gold-Silver Nanoclusters. ACS OMEGA 2024; 9:10621-10627. [PMID: 38463298 PMCID: PMC10918794 DOI: 10.1021/acsomega.3c09010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 02/01/2024] [Accepted: 02/07/2024] [Indexed: 03/12/2024]
Abstract
Excessive administration of penicillin G and improper disposal of its residues pose a serious risk to human health; therefore, the development of convenient methods for monitoring penicillin G levels in products is essential. Herein, novel gold-silver nanoclusters (AuAgNCs) were synthesized using chicken egg white and 6-aza-2-thiothymine as dual ligands with strong yellow fluorescence at 509 and 689 nm for the highly selective detection of penicillin G. The AuAgNCs were characterized using transmission electron microscopy, X-ray photoelectron spectroscopy, ultraviolet-visible absorption spectrophotometry, and fluorescence spectrophotometry. Under optimum conditions, the fluorescence intensity decreased linearly with the concentration of penicillin G from 0.2 to 6 μM, with a low detection limit of 18 nM. Real sample analyses indicated that a sensor developed using the AuAgNCs could detect penicillin G in urine and water samples within 10 min, with the recoveries ranging from 99.7 to 104.0%. The particle size of the AuAgNCs increased from 1.80 to 9.06 nm in the presence of penicillin G. We believe the aggregation-induced quenching of the fluorescence of the AuAgNCs was the main mechanism for the detection of penicillin G. These results demonstrate the ability of our sensor for monitoring penicillin G levels in environmental and clinic samples.
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Affiliation(s)
- Yu-Hung Yeh
- Department of Applied Science, National Taitung University, No. 369, Sec. 2, University Road, Taitung City, Taitung County 95092, Taiwan (R.O.C.)
| | - Yu-Shen Lin
- Department of Applied Science, National Taitung University, No. 369, Sec. 2, University Road, Taitung City, Taitung County 95092, Taiwan (R.O.C.)
| | - Tai-Chia Chiu
- Department of Applied Science, National Taitung University, No. 369, Sec. 2, University Road, Taitung City, Taitung County 95092, Taiwan (R.O.C.)
| | - Cho-Chun Hu
- Department of Applied Science, National Taitung University, No. 369, Sec. 2, University Road, Taitung City, Taitung County 95092, Taiwan (R.O.C.)
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3
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Moreira G, Qian H, Datta SPA, Bliznyuk N, Carpenter J, Dean D, McLamore E, Vanegas D. A capacitive laser-induced graphene based aptasensor for SARS-CoV-2 detection in human saliva. PLoS One 2023; 18:e0290256. [PMID: 37590297 PMCID: PMC10434860 DOI: 10.1371/journal.pone.0290256] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 08/03/2023] [Indexed: 08/19/2023] Open
Abstract
SARS-CoV-2 virus induced CoVID-19 pandemic has accelerated the development of diagnostic tools. Devices integrated with electrochemical biosensors may be an interesting alternative to respond to the high demand for testing, particularly in contexts where access to standard detection technologies is lacking. Aptamers as recognition elements are useful due to their stability, specificity, and sensitivity to binding target molecules. We have developed a non-invasive electrochemical aptamer-based biosensor targeting SARS-CoV-2 in human saliva. The aptamer is expected to detect the Spike protein of SARS-CoV-2 wildtype and its variants. Laser-induced graphene (LIG) electrodes coated with platinum nanoparticles were biofunctionalized with a biotin-tagged aptamer. Electrochemical Impedance Spectroscopy (EIS) for BA.1 sensing was conducted in sodium chloride/sodium bicarbonate solution supplemented with pooled saliva. To estimate sensing performance, the aptasensor was tested with contrived samples of UV-attenuated virions from 10 to 10,000 copies/ml. Selectivity was assessed by exposing the aptasensor to non-targeted viruses (hCoV-OC43, Influenza A, and RSV-A). EIS data outputs were further used to select a suitable response variable and cutoff frequency. Capacitance increases in response to the gradual loading of the attenuated BA.1. The aptasensor was sensitive and specific for BA.1 at a lower viral load (10-100 copies/ml) and was capable of discriminating between negative and positive contrived samples (with strain specificity against other viruses: OC43, Influenza A, and RSV-A). The aptasensor detected SARS-CoV-2 with an estimated LOD of 1790 copies/ml in contrived samples. In human clinical samples, the aptasensor presents an accuracy of 72%, with 75% of positive percent of agreement and 67% of negative percent of agreement. Our results show that the aptasensor is a promising candidate to detect SARS-CoV-2 during early stages of infection when virion concentrations are low, which may be useful for preventing the asymptomatic spread of CoVID-19.
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Affiliation(s)
- Geisianny Moreira
- Environmental Engineering and Earth Sciences, Clemson University, Clemson, South Carolina, United States of America
- Department of Agricultural Sciences, Clemson University, Clemson, South Carolina, United States of America
- Global Alliance for Rapid Diagnostics, Michigan State University, East Lancing, Michigan, United States of America
| | - Hanyu Qian
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, Florida, United States of America
| | - Shoumen Palit Austin Datta
- Department of Mechanical Engineering, MIT Auto-ID Labs, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
- Department of Anesthesiology, Medical Device (MDPnP) Interoperability and Cybersecurity Labs, Biomedical Engineering Program, Massachusetts General Hospital, Harvard Medical School, Cambridge, Massachusetts, United States of America
| | - Nikolay Bliznyuk
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, Florida, United States of America
| | - Jeremiah Carpenter
- Center for Innovative Medical Devices and Sensors (REDDI Lab), Clemson University, Clemson, South Carolina, United States of America
- Department of Bioengineering, Clemson University, Clemson, South Carolina, United States of America
| | - Delphine Dean
- Center for Innovative Medical Devices and Sensors (REDDI Lab), Clemson University, Clemson, South Carolina, United States of America
- Department of Bioengineering, Clemson University, Clemson, South Carolina, United States of America
| | - Eric McLamore
- Environmental Engineering and Earth Sciences, Clemson University, Clemson, South Carolina, United States of America
- Department of Agricultural Sciences, Clemson University, Clemson, South Carolina, United States of America
- Global Alliance for Rapid Diagnostics, Michigan State University, East Lancing, Michigan, United States of America
| | - Diana Vanegas
- Environmental Engineering and Earth Sciences, Clemson University, Clemson, South Carolina, United States of America
- Global Alliance for Rapid Diagnostics, Michigan State University, East Lancing, Michigan, United States of America
- Interdisciplinary Group for Biotechnology Innovation and Ecosocial Change -BioNovo, Universidad del Valle, Cali, Colombia
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4
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Anvari L, Ghoreishi SM, Khoshnevisan K, Ganjali MR, Faridbod F. Methamphetamine determination using label-free impedimetric aptasensor based on ceria nanocomposite. J APPL ELECTROCHEM 2023. [DOI: 10.1007/s10800-023-01880-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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Özyurt C, Uludağ İ, Sezgintürk MK. An ultrasensitive and disposable electrochemical aptasensor for prostate-specific antigen (PSA) detection in real serum samples. Anal Bioanal Chem 2023; 415:1123-1136. [PMID: 36155829 DOI: 10.1007/s00216-022-04309-8] [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: 06/27/2022] [Revised: 08/22/2022] [Accepted: 08/29/2022] [Indexed: 02/07/2023]
Abstract
In this study, we constructed a disposable indium tin oxide polyethylene terephthalate film (ITO-PET)-based electrochemical aptasensor for analyzing prostate-specific antigen (PSA), one of the most important biomarkers of prostate cancer. Because of their clinical importance, building PSA biosensing systems with high sensitivity and stability is essential. However, it still presents significant difficulties, such as low detection limits. We designed a platform to covalently bind the amino-terminated aptamer by modifying the ITO-PET surface with carboxyethylsilanetriol (CTES) to obtain a self-assembled monolayer (SAM). We also evaluated the potential for use in real human serum samples by investigating the optimal operating conditions and analytical performance characteristics of the developed biosensor. The design we present here exhibits excellent precision, with a limit of detection (LOD) as low as 8.74 fg/mL PSA. The broad linear detection range of the biosensor under optimal conditions was determined as 1.0-1500 fg/mL. The dissociation constant (Kd) for the aptamer was also calculated as 46.28 ± 5.63 nM by evaluating the impedimetric response as a function of PSA concentration. The aptasensor displayed considerable repeatability (1.3% RSD) and reproducibility (7.51% RSD) and good storage stability (98.34% of the initial activity for 8 weeks). Additionally, we demonstrated that the technique we developed was quite efficient in estimating the kinetics of aptamer-analyte interactions by determining the Kd and single-frequency impedance (SFI) data. In conclusion, we proposed a selective and sensitive biosensor with the potential for clinical application and superior performance in real serum samples.
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Affiliation(s)
- Canan Özyurt
- Department of Chemistry and Chemical Processing Technologies, Lapseki Vocational School, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - İnci Uludağ
- Bioengineering Department, Engineering Faculty, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Mustafa Kemal Sezgintürk
- Bioengineering Department, Engineering Faculty, Çanakkale Onsekiz Mart University, Çanakkale, Turkey.
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6
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Detection of Alpha-Fetoprotein Using Aptamer-Based Sensors. BIOSENSORS 2022; 12:bios12100780. [PMID: 36290918 PMCID: PMC9599106 DOI: 10.3390/bios12100780] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 09/12/2022] [Accepted: 09/18/2022] [Indexed: 11/16/2022]
Abstract
Alpha-fetoprotein (AFP) is widely-known as the most commonly used protein biomarker for liver cancer diagnosis at the early stage. Therefore, developing the highly sensitive and reliable method of AFP detection is of essential demand for practical applications. Herein, two types of aptamer-based AFP detection methods, i.e., optical and electrochemical biosensors, are reviewed in detail. The optical biosensors include Raman spectroscopy, dual-polarization interferometry, resonance light-scattering, fluorescence, and chemiluminescence. The electrochemical biosensors include cyclic voltammetry, electrochemical impedance spectroscopy, and giant magnetic impedance. Looking into the future, methods for AFP detection that are high sensitivity, long-term stability, low cost, and operation convenience will continue to be developed.
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7
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Anthi J, Kolivoška V, Holubová B, Vaisocherová-Lísalová H. Probing polymer brushes with electrochemical impedance spectroscopy: a mini review. Biomater Sci 2021; 9:7379-7391. [PMID: 34693954 DOI: 10.1039/d1bm01330k] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Polymer brushes are frequently used as surface-tethered antifouling layers in biosensors to improve sensor surface-analyte recognition in the presence of abundant non-target molecules in complex biological samples by suppressing nonspecific interactions. However, because brushes are complex systems highly responsive to changes in their surrounding environment, studying their properties remains a challenge. Electrochemical impedance spectroscopy (EIS) is an emerging method in this context. In this mini review, we aim to elucidate the potential of EIS for investigating the physicochemical properties and structural aspects of polymer brushes. The application of EIS in brush-based biosensors is also discussed. Most common principles employed in these biosensors are presented, as well as interpretation of EIS data obtained in such setups. Overall, we demonstrate that the EIS-polymer brush pairing has a considerable potential for providing new insights into brush functionalities and designing highly sensitive and specific biosensors.
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Affiliation(s)
- Judita Anthi
- Institute of Physics of the CAS, Na Slovance 2, 182 21 Prague, Czech Republic. .,Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 3, 16628 Prague, Czech Republic
| | - Viliam Kolivoška
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3, 182 23 Prague, Czech Republic.
| | - Barbora Holubová
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Technická 3, 16628 Prague, Czech Republic
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8
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Peruzzi C, Battistoni S, Montesarchio D, Cocuzza M, Marasso SL, Verna A, Pasquardini L, Verucchi R, Aversa L, Erokhin V, D'Angelo P, Iannotta S. Interfacing aptamers, nanoparticles and graphene in a hierarchical structure for highly selective detection of biomolecules in OECT devices. Sci Rep 2021; 11:9380. [PMID: 33931690 PMCID: PMC8087810 DOI: 10.1038/s41598-021-88546-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 03/17/2021] [Indexed: 11/09/2022] Open
Abstract
In several biomedical applications, the detection of biomarkers demands high sensitivity, selectivity and easy-to-use devices. Organic electrochemical transistors (OECTs) represent a promising class of devices combining a minimal invasiveness and good signal transduction. However, OECTs lack of intrinsic selectivity that should be implemented by specific approaches to make them well suitable for biomedical applications. Here, we report on a biosensor in which selectivity and a high sensitivity are achieved by interfacing, in an OECT architecture, a novel gate electrode based on aptamers, Au nanoparticles and graphene hierarchically organized to optimize the final response. The fabricated biosensor performs state of the art limit of detection monitoring biomolecules, such as thrombin-with a limit of detection in the picomolar range (≤ 5 pM) and a very good selectivity even in presence of supraphysiological concentrations of Bovine Serum Albumin (BSA-1mM). These accomplishments are the final result of the gate hierarchic structure that reduces sterich indrance that could contrast the recognition events and minimizes false positive, because of the low affinity of graphene towards the physiological environment. Since our approach can be easily applied to a large variety of different biomarkers, we envisage a relevant potential for a large series of different biomedical applications.
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Affiliation(s)
- Carlotta Peruzzi
- IMEM - CNR Institute of Materials for Electronics and Magnetism, Parco Area delle Scienze 37/A, 43124, Parma, Italy
- Physics Department and Ph.D. School on Material Science and Technology, University of Parma, Parma, Italy
| | - Silvia Battistoni
- IMEM - CNR Institute of Materials for Electronics and Magnetism, Parco Area delle Scienze 37/A, 43124, Parma, Italy
| | - Daniela Montesarchio
- Department of Chemical Sciences, University of Naples "Federico II", 80126, Napoli, Italy
| | - Matteo Cocuzza
- IMEM - CNR Institute of Materials for Electronics and Magnetism, Parco Area delle Scienze 37/A, 43124, Parma, Italy
- Chilab - Materials and Microsystems Laboratory, DISAT, Politecnico di Torino, Chivasso, Turin, Italy
| | - Simone Luigi Marasso
- IMEM - CNR Institute of Materials for Electronics and Magnetism, Parco Area delle Scienze 37/A, 43124, Parma, Italy
- Chilab - Materials and Microsystems Laboratory, DISAT, Politecnico di Torino, Chivasso, Turin, Italy
| | - Alessio Verna
- Chilab - Materials and Microsystems Laboratory, DISAT, Politecnico di Torino, Chivasso, Turin, Italy
| | - Laura Pasquardini
- Department of Industrial Engineering, University of Trento, 38123, Trento, Italy
- Indivenire s.r.l., 38123, Trento, Italy
| | - Roberto Verucchi
- IMEM - CNR Institute of Materials for Electronics and Magnetism, Trento Unit, c/o Fondazione Bruno Kessler, Via alla Cascata 56/C, Povo, 38123, Trento, Italy
| | - Lucrezia Aversa
- IMEM - CNR Institute of Materials for Electronics and Magnetism, Trento Unit, c/o Fondazione Bruno Kessler, Via alla Cascata 56/C, Povo, 38123, Trento, Italy
| | - Victor Erokhin
- IMEM - CNR Institute of Materials for Electronics and Magnetism, Parco Area delle Scienze 37/A, 43124, Parma, Italy
| | - Pasquale D'Angelo
- IMEM - CNR Institute of Materials for Electronics and Magnetism, Parco Area delle Scienze 37/A, 43124, Parma, Italy
| | - Salvatore Iannotta
- IMEM - CNR Institute of Materials for Electronics and Magnetism, Parco Area delle Scienze 37/A, 43124, Parma, Italy.
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9
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López L, Hernández N, Reyes Morales J, Cruz J, Flores K, González-Amoretti J, Rivera V, Cunci L. Measurement of Neuropeptide Y Using Aptamer-Modified Microelectrodes by Electrochemical Impedance Spectroscopy. Anal Chem 2021; 93:973-980. [PMID: 33297678 PMCID: PMC7856015 DOI: 10.1021/acs.analchem.0c03719] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Aptamer-modified microelectrodes for Neuropeptide Y measurement by electrochemical impedance spectroscopy was described here. The advantages of using carbon fiber or platinum microelectrodes are because they are promising materials with high electrical conductivity, chemical stability, and high surface area that can be easily modified on their surface. The immobilization and biofouling were studied and compared using EIS. Moreover, the adsorption of NPY to the aptamer-modified microelectrodes was also demonstrated by EIS. Changes of -ω*Zimag, an impedance factor that gives information of the capacitance, is directly correlated with concentrations. A widely linear range was obtained from 10 to 1000 ng/mL of NPY. This method was able to detect NPY without performing a redox reaction by adsorption at the surface of the microelectrodes, with the specificity provided by aptamer functionalization of the microelectrode surface.
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Affiliation(s)
- Luis López
- Department of Chemistry, Universidad Ana G. Méndez, Carr. 189, Km 3.3, Gurabo, Puerto Rico 00778, United States
| | - Nerika Hernández
- Department of Chemistry, Universidad Ana G. Méndez, Carr. 189, Km 3.3, Gurabo, Puerto Rico 00778, United States
| | - Joshua Reyes Morales
- Department of Chemistry, Universidad Ana G. Méndez, Carr. 189, Km 3.3, Gurabo, Puerto Rico 00778, United States
| | - John Cruz
- Department of Chemistry, Universidad Ana G. Méndez, Carr. 189, Km 3.3, Gurabo, Puerto Rico 00778, United States
| | - Krystal Flores
- Department of Chemistry, Universidad Ana G. Méndez, Carr. 189, Km 3.3, Gurabo, Puerto Rico 00778, United States
| | - John González-Amoretti
- Department of Chemistry, Universidad Ana G. Méndez, Carr. 189, Km 3.3, Gurabo, Puerto Rico 00778, United States
| | - Vitmary Rivera
- Department of Chemistry, Universidad Ana G. Méndez, Carr. 189, Km 3.3, Gurabo, Puerto Rico 00778, United States
| | - Lisandro Cunci
- Department of Chemistry, Universidad Ana G. Méndez, Carr. 189, Km 3.3, Gurabo, Puerto Rico 00778, United States
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Ahmad HMN, Dutta G, Csoros J, Si B, Yang R, Halpern JM, Seitz WR, Song E. Stimuli-Responsive Templated Polymer as a Target Receptor for a Conformation-based Electrochemical Sensing Platform. ACS APPLIED POLYMER MATERIALS 2021; 3:329-341. [PMID: 33748761 PMCID: PMC7971449 DOI: 10.1021/acsapm.0c01120] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The use of highly crosslinked molecularly imprinted polymers as a synthetic target receptor has the limitations of restricted accessibility to the binding sites resulting in slow response time. Moreover, such artificial receptors often require additional transduction mechanisms to translate target binding events into measurable signals. Here, we propose the development of a single-chain stimuli-responsive templated polymer, without using any covalent interchain crosslinkers, as a target recognition element. The synthesized polymer chain exhibits preferential binding with the target molecule with which the polymer is templated. Moreover, upon specific target recognition, the polymer undergoes conformation change induced by its particular stimuli responsiveness, namely the target binding event. Such templated single-chain polymers can be attached to the electrode surface to implement a label-free electrochemical sensing platform. A target analyte, 4-nitrophenol (4-NP), was used as a template to synthesize a poly-N-isopropylacrylamide (PNIPAM)-based copolymer chain which was anchored to the electrode to be used as a selective receptor for 4-NP. The electrode surface chemistry analysis and the electrochemical impedance study reveal that the polymer concentration, the interchain interactions, and the Hofmeister effect play a major role in influencing the rate of polymer grafting as well as the morphology of the polymers grafted to the electrode. We also show that the specific binding between 4-NP and the copolymer results in a substantial change in the charge transfer kinetics at the electrode signifying the polymer conformation change.
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Affiliation(s)
- Habib M. N. Ahmad
- Department of Electrical and Computer Engineering, University of New Hampshire, Durham, NH 03824, United States
| | - Gaurab Dutta
- Department of Electrical and Computer Engineering, University of New Hampshire, Durham, NH 03824, United States
| | - John Csoros
- Department of Chemistry, University of New Hampshire, Durham, NH 03824, United States
| | - Bo Si
- Department of Chemistry, University of New Hampshire, Durham, NH 03824, United States
| | - Rongfang Yang
- Department of Chemistry, University of New Hampshire, Durham, NH 03824, United States
| | - Jeffrey M. Halpern
- Department of Chemical Engineering, University of New Hampshire, Durham, NH 03824, United States
| | - W. Rudolf Seitz
- Department of Chemistry, University of New Hampshire, Durham, NH 03824, United States
| | - Edward Song
- Department of Electrical and Computer Engineering, University of New Hampshire, Durham, NH 03824, United States
- Materials Science Program, University of New Hampshire, Durham, NH 03824, United States
- Corresponding Author: Edward Song, . Phone: +1-603-862-5498
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11
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Jamei HR, Rezaei B, Ensafi AA. Ultra-sensitive and selective electrochemical biosensor with aptamer recognition surface based on polymer quantum dots and C 60/MWCNTs- polyethylenimine nanocomposites for analysis of thrombin protein. Bioelectrochemistry 2020; 138:107701. [PMID: 33254052 DOI: 10.1016/j.bioelechem.2020.107701] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 11/02/2020] [Accepted: 11/05/2020] [Indexed: 10/22/2022]
Abstract
In this study, an ultra-sensitive and selective Thrombin biosensor with aptamer-recognition surface is introduced based on carbon nanocomposite. To prepare the this biosensor, screen-printed carbon electrodes (SPCE) were modified with a nanocomposite made from fullerene (C60), multi-walled carbon nanotubes (MWCNTs), polyethylenimine (PEI) and polymer quantum dots (PQdot). The unique characteristics of each component of the C60/MWCNTs-PEI/PQdot nanocomposite allow for synergy between nanoparticles while polymer quantum dots resulted in characteristics such as high stability, high surface to volume ratio, high electrical conductivity, high biocompatibility, and high mechanical and chemical stability. The large number of amine groups in C60/MWCNTs-PEI/PQdot nanocomposite created more sites for better covalent immobilization of amino-linked aptamer (APT) which improved the sensitivity and stability of the aptasensor. Differential Pulse Voltammetry (DPV) method with probe solution was used as the measurment method. Binding of thrombin protein to aptamers immobilized on the transducer resulted in reduced electron transfer at the electrode/electrolyte interface which reduces the peak current (IP) in DPV. The calibration curve was drawn using the changes in the peak current (ΔIP),. The proposed aptasensor has a very low detection limit of 6 fmol L-1, and a large linear range of 50 fmol L-1 to 20 nmol L-1. Furthermore, the proposed C60/MWCNTs-PEI/PQdot/APT aptasensor has good reproducibility, great selectivity, low response time and a good stability during its storage. Finally, the application of the proposed aptasensor for measuring thrombin on human blood serum samples was investigated. This aptasensor can be useful in bioengineering and biomedicine applications as well as for clinical studies.
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Affiliation(s)
- Hamid Reza Jamei
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Behzad Rezaei
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran.
| | - Ali Asghar Ensafi
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran
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12
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Lenyk B, Figueroa‐Miranda G, Pavlushko I, Lo Y, Tanner JA, Offenhäusser A, Mayer D. Dual‐Transducer Malaria Aptasensor Combining Electrochemical Impedance and Surface Plasmon Polariton Detection on Gold Nanohole Arrays. ChemElectroChem 2020. [DOI: 10.1002/celc.202001212] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Bohdan Lenyk
- Institute of Biological Information Processing (IBI-3) Forschungszentrum Jülich 52428 Jülich Germany
- Department of Physics University of Konstanz 78464 Konstanz Germany
| | - Gabriela Figueroa‐Miranda
- Institute of Biological Information Processing (IBI-3) Forschungszentrum Jülich 52428 Jülich Germany
- RWTH Aachen University Aachen 52062 Germany
| | - Ivan Pavlushko
- Institute of Biological Information Processing (IBI-3) Forschungszentrum Jülich 52428 Jülich Germany
- Faculty of Radio Physics Electronics and Computer Systems Taras Shevchenko National University of Kyiv Kyiv 03680 Ukraine
| | - Young Lo
- School of Biomedical Sciences Li Ka Shing Faculty of Medicine The University of Hong Kong Pokfulam, Hong Kong Special Administrative Region China
| | - Julian A. Tanner
- School of Biomedical Sciences Li Ka Shing Faculty of Medicine The University of Hong Kong Pokfulam, Hong Kong Special Administrative Region China
| | - Andreas Offenhäusser
- Institute of Biological Information Processing (IBI-3) Forschungszentrum Jülich 52428 Jülich Germany
- RWTH Aachen University Aachen 52062 Germany
| | - Dirk Mayer
- Institute of Biological Information Processing (IBI-3) Forschungszentrum Jülich 52428 Jülich Germany
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Khan NI, Mousazadehkasin M, Ghosh S, Tsavalas JG, Song E. An integrated microfluidic platform for selective and real-time detection of thrombin biomarkers using a graphene FET. Analyst 2020; 145:4494-4503. [PMID: 32400815 PMCID: PMC7478360 DOI: 10.1039/d0an00251h] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Lab-on-a-chip technology offers an ideal platform for low-cost, reliable, and easy-to-use diagnostics of key biomarkers needed for early screening of diseases and other health concerns. In this work, a graphene field-effect transistor (GFET) functionalized with target-binding aptamers is used as a biosensor for the detection of thrombin protein biomarker. Furthermore, this GFET is integrated with a microfluidic device for enhanced sensing performances in terms of detection limit, sensitivity, and continuous monitoring. Under this platform, a picomolar limit of detection was achieved for measuring thrombin; in our experiment measured as low as 2.6 pM. FTIR, Raman and UV-Vis spectroscopy measurements were performed to confirm the device functionalization steps. Based on the concentration-dependent calibration curve, a dissociation constant of KD = 375.8 pM was obtained. Continuous real-time measurements were also conducted under a constant gate voltage (VGS) to observe the transient response of the sensor when analyte was introduced to the device. The target selectivity of the sensor platform was evaluated and confirmed by challenging the GFET biosensor with various concentrations of lysozyme protein. The results suggest that this device technology has the potential to be used as a general diagnostic platform for measuring clinically relevant biomarkers for point-of-care applications.
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Affiliation(s)
- Niazul I Khan
- Department of Electrical and Computer Engineering, University of New Hampshire, Durham, NH 03824, USA.
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14
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Yagati AK, Go A, Chavan SG, Baek C, Lee MH, Min J. Nanostructured Au-Pt hybrid disk electrodes for enhanced parathyroid hormone detection in human serum. Bioelectrochemistry 2019; 128:165-174. [DOI: 10.1016/j.bioelechem.2019.04.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 04/09/2019] [Accepted: 04/09/2019] [Indexed: 12/22/2022]
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15
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Han S, Liu W, Yang S, Wang R. Facile and Label-Free Electrochemical Biosensors for MicroRNA Detection Based on DNA Origami Nanostructures. ACS OMEGA 2019; 4:11025-11031. [PMID: 31460200 PMCID: PMC6649092 DOI: 10.1021/acsomega.9b01166] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 06/13/2019] [Indexed: 05/25/2023]
Abstract
MicroRNAs (miRNAs) have emerged as the promising molecular biomarkers for early diagnosis and enhanced understanding of the molecular pathogenesis of cancers as well as certain diseases. Here, a facile, label-free, and amplification-free electrochemical biosensor was developed to detect miRNA by using DNA origami nanostructure-supported DNA probes, with methylene blue (MB) serving as the hybridization redox indicator, for the first time. Specifically, the use of cross-shaped DNA origami nanostructures containing multiple single-stranded DNA probes at preselected locations on each DNA nanostructure could increase the accessibility and the recognition efficiency of the probes (due to the rational controlled density of DNA probes). The successful immobilization of DNA origami probes and their hybridization with targeted miRNA-21 molecules was confirmed by electrochemical impedance spectroscopy and cyclic voltammetry methods. A differential pulse voltammetry technique was employed to record the oxidation peak current of MB before and after target hybridization. The linear detection range of this biosensor was from 0.1 pM to 10.0 nM, with a lower detection limit of 79.8 fM. The selectivity of the miRNA biosensor was also studied by observing the discrimination ability of single-base mismatched sequences. Because of the larger surface area and unprecedented customizability of DNA origami nanostructures, this strategy demonstrated great potential for sensitive, selective, and label-free determination of miRNA for translational biomedical research and clinical applications.
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Affiliation(s)
- Shuo Han
- Department
of Chemistry and Center for Research in Energy and Environment, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Wenyan Liu
- Department
of Chemistry and Center for Research in Energy and Environment, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Shuo Yang
- Department
of Chemistry and Center for Research in Energy and Environment, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Risheng Wang
- Department
of Chemistry and Center for Research in Energy and Environment, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
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16
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Pourreza N, Ghomi M. Hydrogel based aptasensor for thrombin sensing by Resonance Rayleigh Scattering. Anal Chim Acta 2019; 1079:180-191. [PMID: 31387709 DOI: 10.1016/j.aca.2019.06.049] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/02/2019] [Accepted: 06/22/2019] [Indexed: 12/12/2022]
Abstract
In this research, a novel Resonance Rayleigh Scattering (RRS) aptasensor was developed for thrombin monitoring using in-situ synthesized and embedded Au nanoparticles (AuNPs) into poly vinyl alcohol -borax hydrogel (PBH). Thiolated-thrombin binding aptamer (thiolated-TBA) was attached to the surface of AuNPs embedded into PBH to design the PBH-aptasensor for thrombin detection (thiolated-TBA@AuNPs-PBH). To verify the characteristic and morphology of PBH nanocomposite, energy dispersive X-ray analysis, TEM, average particle size analizer and UV-Vis spectra were performed. The difference in RRS intensities in the absence and presence of thrombin was calculated and selected as the monitoring signal. Effect of different parameters on the RRS signal was investigated at excitation wavelength of 500 nm. Under the approved conditions, the linear detection range was validated over the concentration of 0.70 pM- 0.02 μM. The limit of detection based on 3Sb was 0.10 pM. The relative standard deviation for 5.6 pM and 3.6 nM were 4.0 and 2.7% (n = 10), respectively. The proposed aptasensor was successfully applied as an experimental model for thrombin detection in serum samples of healthy volunteers with acceptable results.
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Affiliation(s)
- Nahid Pourreza
- Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Matineh Ghomi
- Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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17
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Yarizadeh K, Behbahani M, Mohabatkar H, Noorbakhsh A. Computational analysis and optimization of carcinoembryonic antigen aptamers and experimental evaluation. J Biotechnol 2019; 306:1-8. [PMID: 31075298 DOI: 10.1016/j.jbiotec.2019.05.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 05/03/2019] [Accepted: 05/06/2019] [Indexed: 02/03/2023]
Abstract
Carcinoembryonic antigen (CEA), a highly glycosylated protein, overexpresses in many cancers. In this study, computational methods were used to optimize CEA aptamers. Experimental evaluvation of selected aptamers were conducted through electrochemical impedance spectroscopy. After two and three-dimensional structure modeling, the complexes of twelve reported aptamers against CEA were simulated using the ZDOCK server. Based on docking scores, two aptamer sequences (CSR59 and CSR57.1) were selected and used to create a new library. This ssDNA aptamer library consisting of 91 sequences was created using diverse in silico mutational methods. We obtained seventeen sequences having higher binding scores than reported sequences. Based on ZDOCK scores, the interaction domain of CEA, and steric hindrance due to glycosylation, two aptamer sequences (G3S1.5 and G2S2.2) were selected. An impedimetric aptasensor was designed, and selected aptamers were used as biorecognition elements. Resistance to charge transfer (Rct) quantities confirmed the bioinformatic approach and molecular docking scores. The result showed that the interaction ability of selected aptamers was about 13.5 fold higher than the control. It can be concluded that the selected aptamers have good potential for detection of carcinoembryonic antigen biomarker.
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Affiliation(s)
- Kazem Yarizadeh
- Faculty of Advanced Science and Technology, University of Isfahan, Isfahan, Iran
| | - Mandana Behbahani
- Faculty of Advanced Science and Technology, University of Isfahan, Isfahan, Iran.
| | - Hasan Mohabatkar
- Faculty of Advanced Science and Technology, University of Isfahan, Isfahan, Iran
| | - Abdollah Noorbakhsh
- Faculty of Advanced Science and Technology, University of Isfahan, Isfahan, Iran
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18
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Ma F, Zhu Y, Chen Y, Liu J, Zeng X. Labeled and non-label electrochemical peptide inhibitor-based biosensing platform for determination of hemopexin domain of matrix metalloproteinase-14. Talanta 2019; 194:548-553. [DOI: 10.1016/j.talanta.2018.10.057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 10/10/2018] [Accepted: 10/17/2018] [Indexed: 01/07/2023]
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Gosai A, Hau Yeah BS, Nilsen-Hamilton M, Shrotriya P. Label free thrombin detection in presence of high concentration of albumin using an aptamer-functionalized nanoporous membrane. Biosens Bioelectron 2019; 126:88-95. [PMID: 30396022 PMCID: PMC6383723 DOI: 10.1016/j.bios.2018.10.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 09/21/2018] [Accepted: 10/03/2018] [Indexed: 11/16/2022]
Abstract
Nanoporous alumina membranes have become a ubiquitous biosensing platform for a variety of applications and aptamers are being increasingly utilized as recognition elements in protein sensing devices. Combining the advantages of the two, we report label-free sensitive detection of human α-thrombin by an aptamer-functionalized nanoporous alumina membrane using a four-electrode electrochemical cell. The sensor response to α-thrombin was determined in the presence of a high concentration (500 μM) of human serum albumin (HSA) as an interfering protein in the background. The sensor sensitivity was also characterized against γ-thrombin, which is a modified α-thrombin lacking the aptamer binding epitope. The detection limit, within an appreciable signal/noise ratio, was 10 pM of α-thrombin in presence of 500 μM HSA. The proposed scheme involves the use of minimum reagents/sample preparation steps, has appreciable response in presence of high concentrations of interfering molecules and is readily amenable to miniaturization by association with existing-chip based electrical systems for application in point-of-care diagnostic devices.
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Affiliation(s)
- Agnivo Gosai
- Department of Mechanical Engineering,Iowa State University, 2019 Black Engineering Building, Ames, IA 50011, United States
| | - Brendan Shin Hau Yeah
- Department of Mechanical Engineering,Iowa State University, 2019 Black Engineering Building, Ames, IA 50011, United States
| | - Marit Nilsen-Hamilton
- Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA 50011, United States; Aptalogic Inc, United States
| | - Pranav Shrotriya
- Department of Mechanical Engineering,Iowa State University, 2019 Black Engineering Building, Ames, IA 50011, United States.
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20
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Khater M, de la Escosura-Muñiz A, Quesada-González D, Merkoçi A. Electrochemical detection of plant virus using gold nanoparticle-modified electrodes. Anal Chim Acta 2018; 1046:123-131. [PMID: 30482289 DOI: 10.1016/j.aca.2018.09.031] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 08/15/2018] [Accepted: 09/13/2018] [Indexed: 10/28/2022]
Abstract
Tristeza is one of the destructive diseases of citrus causing by citrus tristeza virus (CTV). Historically, CTV has been associated with serious outbreaks of quick decline of citrus, therefore CTV monitoring is important aspect for avoiding such re-emerging epidemics, which would threat citrus production through the world. In this context, we have designed for the first time a label-free impedimetric biosensor for the detection of nucleic acid of CTV. The sensing platform based on a screen-printed carbon electrode (SPCE) was modified by electrodeposited gold nanoparticles (AuNPs), which allowed to efficiently immobilizing thiolated ssDNA probes as well to enhance the electrode conductivity. The growth of AuNPs was optimized and characterized using scanning electron microscopy (SEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). We investigated the behavior of thiolated ssDNA probe layer and its hybridization with target DNA onto AuNP surfaces by EIS measurements in Fe(CN6)4-/Fe(CN6)3- red-ox system. The main sensor design aspects such as AuNPs size, probe DNA concentration and immobilization time together with DNA hybridization time were optimized so as to achieve the best performance. Impedance values of DNA hybridization increased with Citrus tristeza-related synthetic DNA concentration, showing a logarithmic relation in the range of 0.1-10 μM. The results also indicate that the biosensor was able to selectively detect CTV nucleic acids in the presence of other non-specific DNAs. Moreover, we have demonstrated the good performance of the system in a real plant sample matrix. In addition, the sensor reproducibility enhanced after the hybridization onto MCH/poly (AT) thiolated DNA probes which was confirmed by intra- and inter-day variability assays.
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Affiliation(s)
- Mohga Khater
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and Barcelona Institute of Science and Technology, Campus UAB, 08193, Barcelona, Spain; On Leave from Agricultural Research Center (ARC), Ministry of Agriculture and Land Reclamation, Giza, Egypt
| | - Alfredo de la Escosura-Muñiz
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and Barcelona Institute of Science and Technology, Campus UAB, 08193, Barcelona, Spain
| | - Daniel Quesada-González
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and Barcelona Institute of Science and Technology, Campus UAB, 08193, Barcelona, Spain
| | - Arben Merkoçi
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and Barcelona Institute of Science and Technology, Campus UAB, 08193, Barcelona, Spain; ICREA-Institucio Catalana de Recerca i Estudis Avançats, Pg. Lluís Companys 23, 08010, Barcelona, Spain.
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21
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Electrochemical and AFM Characterization of G-Quadruplex Electrochemical Biosensors and Applications. J Nucleic Acids 2018; 2018:5307106. [PMID: 29666699 PMCID: PMC5831849 DOI: 10.1155/2018/5307106] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 10/25/2017] [Accepted: 11/05/2017] [Indexed: 02/06/2023] Open
Abstract
Guanine-rich DNA sequences are able to form G-quadruplexes, being involved in important biological processes and representing smart self-assembling nanomaterials that are increasingly used in DNA nanotechnology and biosensor technology. G-quadruplex electrochemical biosensors have received particular attention, since the electrochemical response is particularly sensitive to the DNA structural changes from single-stranded, double-stranded, or hairpin into a G-quadruplex configuration. Furthermore, the development of an increased number of G-quadruplex aptamers that combine the G-quadruplex stiffness and self-assembling versatility with the aptamer high specificity of binding to a variety of molecular targets allowed the construction of biosensors with increased selectivity and sensitivity. This review discusses the recent advances on the electrochemical characterization, design, and applications of G-quadruplex electrochemical biosensors in the evaluation of metal ions, G-quadruplex ligands, and other small organic molecules, proteins, and cells. The electrochemical and atomic force microscopy characterization of G-quadruplexes is presented. The incubation time and cations concentration dependence in controlling the G-quadruplex folding, stability, and nanostructures formation at carbon electrodes are discussed. Different G-quadruplex electrochemical biosensors design strategies, based on the DNA folding into a G-quadruplex, the use of G-quadruplex aptamers, or the use of hemin/G-quadruplex DNAzymes, are revisited.
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22
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An aptamer-based biosensor for detection of doxorubicin by electrochemical impedance spectroscopy. Anal Bioanal Chem 2017; 410:1453-1462. [PMID: 29199352 DOI: 10.1007/s00216-017-0786-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 10/31/2017] [Accepted: 11/24/2017] [Indexed: 12/18/2022]
Abstract
An aptamer-based biosensor was developed for the detection of doxorubicin using electrochemical impedance spectroscopy. Doxorubicin and its 14-dehydroxylated version daunorubicin are anthracyclines often used in cancer treatment. Due to their mutagenic and cardiotoxic effects, detection in groundwater is desirable. We developed a biosensor using the daunorubicin-binding aptamer as biological recognition element. The aptamer was successfully co-immobilized with mercaptohexanol on gold and a density of 1.3*1013 ± 2.4*1012 aptamer molecules per cm2 was achieved. The binding of doxorubicin to the immobilized aptamer was detected by electrochemical impedance spectroscopy. The principle is based on the inhibition of electron transfer between electrode and ferro-/ferricyanide in solution caused by the binding of doxorubicin to the immobilized aptamer. A linear relationship between the charge transfer resistance (R ct ) and the doxorubicin concentration was obtained over the range of 31 nM to 125 nM doxorubicin, with an apparent binding constant of 64 nM and a detection limit of 28 nM. With the advantages of high sensitivity, selectivity, and simple sensor construction, this method shows a high potential of impedimetric aptasensors in environmental monitoring. Graphical abstract Measurement chamber and immobilization principle for the detection of doxorubicin by electrochemical impedance spectroscopy.
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23
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Kafrashi F, Afkhami A, Nabiabad HS, Madrakian T, Piri K. Designing of a new label-free electrochemical impedimetric nanosensor based on selective interaction sequence of l-lysine with activase kringle domains for sensitive detection of activase protein. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.10.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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24
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Xu W, Fu K, Bohn PW. Electrochromic Sensor for Multiplex Detection of Metabolites Enabled by Closed Bipolar Electrode Coupling. ACS Sens 2017; 2:1020-1026. [PMID: 28750540 DOI: 10.1021/acssensors.7b00292] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Biosensors based on converting electrochemical signals into optical readouts are attractive candidates as low-cost, high-throughput sensor platforms. Here, we described a closed bipolar electrode (CBE)-based two-cell electrochromic device for sensing multiple metabolites, using the simultaneous detection of lactate, glucose, and uric acid as a model system. In the two-cell configuration, an analytical cell contains a redox mediator combined with a specific oxidase, e.g., lactate oxidase, glucose oxidase, or uricase, to form an electrochemical mediator-electrocatalyst pair that supports redox cycling. A closed bipolar electrode couples the electron transfer event in the analytical cell to an electrochromic reaction in a separate reporter cell, such that the magnitude of the color change is related to the concentration of metabolites in the analytical cell. To demonstrate multiplex operation, the CBE-based electrochromic detector is modified by integrating three sets of detection chemistries into a single device, in which simultaneous determination of glucose, lactate, and uric acid is demonstrated. Device sensitivity can be tuned by using reporter cells with different volumes. Furthermore, the analytical cell of this device can be fabricated as a disposable, paper-based carbon electrode without any pretreatment, demonstrating the potential to screen phenotypes that require multiple biomarkers in a point-of-care format.
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Affiliation(s)
- Wei Xu
- Department of Chemistry and Biochemistry and ‡Department of Chemical and Biomolecular
Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Kaiyu Fu
- Department of Chemistry and Biochemistry and ‡Department of Chemical and Biomolecular
Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Paul W. Bohn
- Department of Chemistry and Biochemistry and ‡Department of Chemical and Biomolecular
Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
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An interdigital array microelectrode aptasensor based on multi-walled carbon nanotubes for detection of tetracycline. Bioprocess Biosyst Eng 2017; 40:1419-1425. [PMID: 28717833 DOI: 10.1007/s00449-017-1799-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 06/08/2017] [Indexed: 02/02/2023]
Abstract
In this study an impedance aptasensor was designed for sensitive, selective, and fast detection of tetracycline (TET) based on an interdigital array microelectrode (IDAM). The IDAM was integrated with impedance detection to miniaturize the conventional electrodes, enhance the sensitivity, shorten the detection time, and minimize interfering effects of non-target analytes in the solution. Due to their excellent conductivity, good biocompatibility, the multi-walled carbon nanotubes (MWCNTs) were used to modify the IDAM to immobilize TET aptamer effectively. The proposed aptasensor produced a sensitive impedance change which was characterized by the electrochemical impedance spectroscopy (EIS). With the addition of TET, the formation of TET-aptamer complex on the surface of MWCNTs modified electrode resulted in an increase of electron transfer resistance (R et). The change of R et depends on the concentration of TET, which is applied for the quantification of TET. A wide linear range was obtained from 10-9 to 10-3 M. The linear regression equation was y(ΔR) = 21.310 × x(LogC) (M) + 217.25. It was successfully applied to detect TET in real milk samples.
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26
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Conducting polymers revisited: applications in energy, electrochromism and molecular recognition. J Solid State Electrochem 2017. [DOI: 10.1007/s10008-017-3556-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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Shen MC, Lai JC, Hong CY, Wang GJ. Electrochemical aptasensor for detecting Der p2 allergen using polycarbonate-based double-generation gold nanoparticle chip. SENSING AND BIO-SENSING RESEARCH 2017. [DOI: 10.1016/j.sbsr.2016.06.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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28
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Feng R, Hu X, He C, Li X, Luo X. Electrochemical Determination of the p53 Tumor Suppressor Gene Using a Gold Nanoparticle-Graphene Nanocomposite Modified Glassy Carbon Electrode. ANAL LETT 2017. [DOI: 10.1080/00032719.2016.1178273] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Rongrong Feng
- School of Chemistry and Chemical Engineering, Yan’an University, Yan’an, China
| | - Xiaoqin Hu
- School of Chemistry and Chemical Engineering, Yan’an University, Yan’an, China
| | - Caimei He
- School of Chemistry and Chemical Engineering, Yan’an University, Yan’an, China
| | - Xiaoxia Li
- School of Chemistry and Chemical Engineering, Yan’an University, Yan’an, China
| | - Xianwen Luo
- School of Chemistry and Chemical Engineering, Yan’an University, Yan’an, China
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29
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Wang B, Jing R, Qi H, Gao Q, Zhang C. Label-free electrochemical impedance peptide-based biosensor for the detection of cardiac troponin I incorporating gold nanoparticles modified carbon electrode. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.08.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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30
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Qin X, Wang L, Xie Q. Sensitive Bioanalysis Based on in-Situ Droplet Anodic Stripping Voltammetric Detection of CdS Quantum Dots Label after Enhanced Cathodic Preconcentration. SENSORS 2016; 16:s16091342. [PMID: 27563894 PMCID: PMC5038621 DOI: 10.3390/s16091342] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 07/29/2016] [Accepted: 08/04/2016] [Indexed: 12/22/2022]
Abstract
We report a protocol of CdS-labeled sandwich-type amperometric bioanalysis with high sensitivity, on the basis of simultaneous chemical-dissolution/cathodic-enrichment of the CdS quantum dot biolabel and anodic stripping voltammetry (ASV) detection of Cd directly on the bioelectrode. We added a microliter droplet of 0.1 M aqueous HNO3 to dissolve CdS on the bioelectrode and simultaneously achieved the potentiostatic cathodic preconcentration of Cd by starting the potentiostatic operation before HNO3 addition, which can largely increase the ASV signal. Our protocol was used for immunoanalysis and aptamer-based bioanalysis of several proteins, giving limits of detection of 4.5 fg·mL−1 for human immunoglobulin G, 3.0 fg·mL−1 for human carcinoembryonic antigen (CEA), 4.9 fg·mL−1 for human α-fetoprotein (AFP), and 0.9 fM for thrombin, which are better than many reported results. The simultaneous and sensitive analysis of CEA and AFP at two screen-printed carbon electrodes was also conducted by our protocol.
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Affiliation(s)
- Xiaoli Qin
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China.
| | - Linchun Wang
- Liuzhou Traditional Chinese Medicine Hospital, Liuzhou 545001, China.
| | - Qingji Xie
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China.
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31
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Yang J, Dou B, Yuan R, Xiang Y. Proximity Binding and Metal Ion-Dependent DNAzyme Cyclic Amplification-Integrated Aptasensor for Label-Free and Sensitive Electrochemical Detection of Thrombin. Anal Chem 2016; 88:8218-23. [PMID: 27436431 DOI: 10.1021/acs.analchem.6b02035] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Thrombin plays important roles for the diagnosis of neurodegenerative and cardiovascular diseases. By integrating proximity binding-induced strand displacement and metal ion-dependent DNAzyme recycling amplification, we demonstrate here the development of a simple and sensitive strategy for the detection of thrombin in human serums. The binding of the two distinct aptamers to the thrombin targets increases the local concentration of the aptamers and facilitates the release of the enzymatic sequences through proximity binding-induced strand displacement. The liberated enzymatic sequences further hybridize with the G-quadruplex containing and hairpin-structured substrate sequences on the sensor electrode to form the metal-ion dependent DNAzymes. Subsequently, the metal ions catalyze the cleavage of the substrate sequences to unlock the G-quadruplex forming sequences and to release the enzymatic sequences to trigger another cleavage cycle. Such metal ion-dependent DNAzyme recycling amplification leads to the formation of many active G-quadruplex forming sequences, which associate with hemin to form G-quadruplex/hemin complexes on the electrode surface. Direct electron transfer of hemin to the electrode during the potential scan can thus generate significantly amplified current for sensitive detection of thrombin at the low picomolar level. The work demonstrated here can thus offer new opportunities for the development of convenient signal amplification strategies for detecting various protein targets.
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Affiliation(s)
- Jianmei Yang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, PR China
| | - Baoting Dou
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, PR China
| | - Ruo Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, PR China
| | - Yun Xiang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, PR China
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Coelho L, Marques Martins de Almeida JM, Santos JL, da Silva Jorge PA, Martins MCL, Viegas D, Queirós RB. Aptamer-based fiber sensor for thrombin detection. JOURNAL OF BIOMEDICAL OPTICS 2016; 21:87005. [PMID: 27548775 DOI: 10.1117/1.jbo.21.8.087005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Accepted: 08/01/2016] [Indexed: 06/06/2023]
Abstract
The detection of thrombin based on aptamer binding is studied using two different optical fiber-based configurations: long period gratings coated with a thin layer of titanium dioxide and surface plasmon resonance devices in optical fibers coated with a multilayer of gold and titanium dioxide. These structures are functionalized and the performance to detect thrombin in the range 10 to 100 nM is compared in transmission mode. The sensitivity to the surrounding refractive index (RI) of the plasmonic device is higher than 3100 nm RIU−1 in the RI range 1.335 to 1.355, a factor of 20 greater than the sensitivity of the coated grating. The detection of 10 nM of thrombin was accomplished with a wavelength shift of 3.5 nm and a resolution of 0.54 nM.
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Affiliation(s)
- Luís Coelho
- University of Porto, CAP/INESC TEC-Technology and Science and FCUP-Faculty of Sciences, Rua do Campo Alegre, 4150-179 Porto, Portugal
| | - José Manuel Marques Martins de Almeida
- University of Porto, CAP/INESC TEC-Technology and Science and FCUP-Faculty of Sciences, Rua do Campo Alegre, 4150-179 Porto, PortugalbUniversidade de Trás-os-Montes e Alto Douro, Department of Physics, School of Sciences and Technology, Apartado 1013, 5001-801 Vila Real, Portugal
| | - José Luís Santos
- University of Porto, CAP/INESC TEC-Technology and Science and FCUP-Faculty of Sciences, Rua do Campo Alegre, 4150-179 Porto, Portugal
| | - Pedro Alberto da Silva Jorge
- University of Porto, CAP/INESC TEC-Technology and Science and FCUP-Faculty of Sciences, Rua do Campo Alegre, 4150-179 Porto, Portugal
| | - Maria Cristina L Martins
- Universidade do Porto, i3S-Instituto de Investigação e Inovação em Saúde, PortugaldUniversidade do Porto, INEB-Instituto de Engenharia Biomédica, Rua Alfredo Allen, 208, 4200-135 Porto, PortugaleUniversidade do Porto, ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
| | - Diana Viegas
- Universidade do Porto, INEB-Instituto de Engenharia Biomédica, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Raquel B Queirós
- INL-International Iberian Nanotechnology, Avenida Mestre José Veiga s/n, 4715-330 Braga, Portugal
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Ahour F, Ahsani MK. An electrochemical label-free and sensitive thrombin aptasensor based on graphene oxide modified pencil graphite electrode. Biosens Bioelectron 2016; 86:764-769. [PMID: 27476058 DOI: 10.1016/j.bios.2016.07.053] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 06/26/2016] [Accepted: 07/16/2016] [Indexed: 01/10/2023]
Abstract
In this work, we tactfully constructed a novel label-free electrochemical aptasensor for rapid and facile detection of thrombin using graphene oxide (GO) and thrombin binding aptamer (TBA). The strategy relies on the preferential adsorption of single-stranded DNA (ssDNA) to GO over aptamer-target complexes. The TBA-thrombin complex formation was monitored by differential pulse voltammetry (DPV) using the guanine oxidation signal. In the absence of thrombin, the aptamers adsorbed onto the surface of GO leading to a strong background guanine oxidation signal. Conversely, in the presence of thrombin, the conformational transformation of TBA after incubating with the thrombin solution and formation of the aptamer-thrombin complexes which had weak binding ability to GO, leads to the desorption of TBA-thrombin complex from electrode surface and significant oxidation signal decrease. The selectivity of the biosensor was studied using other biological substances. The biosensor's signal was proportional to the thrombin concentration from 0.1 to 10nM with a detection limit of 0.07nM. Particularly, the proposed method could be widely applied to the aptamer-based determination of other target analytes.
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Affiliation(s)
- F Ahour
- Nanotechnology Research Center, Urmia University, Urmia, Iran.
| | - M K Ahsani
- Nanotechnology Research Center, Urmia University, Urmia, Iran
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35
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Aptasensors Based on Whispering Gallery Mode Resonators. BIOSENSORS-BASEL 2016; 6:bios6030028. [PMID: 27438861 PMCID: PMC5039647 DOI: 10.3390/bios6030028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 06/07/2016] [Accepted: 06/13/2016] [Indexed: 12/25/2022]
Abstract
In this paper, we review the literature on optical evanescent field sensing in resonant cavities where aptamers are used as biochemical receptors. The combined advantages of highly sensitive whispering gallery mode resonator (WGMR)-based transducers, and of the unique properties of aptamers make this approach extremely interesting in the medical field, where there is a particularly high need for devices able to provide real time diagnosis for cancer, infectious diseases, or strokes. However, despite the superior performances of aptamers compared to antibodies and WGMR to other evanescent sensors, there is not much literature combining both types of receptors and transducers. Up to now, the WGMR that have been used are silica microspheres and silicon oxynitride (SiON) ring resonators.
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36
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Label-free detection of C-reactive protein using an electrochemical DNA immunoassay. SENSING AND BIO-SENSING RESEARCH 2016. [DOI: 10.1016/j.sbsr.2016.03.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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37
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Li Y, Wang Q, Zhang Y, Deng D, He H, Luo L, Wang Z. A label-free electrochemical aptasensor based on graphene oxide/double-stranded DNA nanocomposite. Colloids Surf B Biointerfaces 2016; 145:160-166. [PMID: 27182650 DOI: 10.1016/j.colsurfb.2016.04.048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 04/07/2016] [Accepted: 04/29/2016] [Indexed: 10/21/2022]
Abstract
A novel label-free electrochemical impedance aptasensor based on a gold nanoparticles/double-stranded DNA-graphene (AuNPs/dsDNA-GO) nanocomposite modified glassy carbon electrode was presented for quantitative determination of thrombin. GO was covalently functionalized with dsDNA via a facile amidation process, and then AuNPs were electrodeposited onto the surface of dsDNA-GO. The morphology, conductivity and interaction of the as-prepared nanocomposites were characterized by scanning electron microscopy, cyclic voltammetry, electrochemical impedance spectroscopy (EIS), Raman and Fourier transform infrared spectroscopy. The thrombin-binding aptamer (TBA) was conjugated to AuNPs via gold-thiol chemistry to construct electrochemical aptasensing platform, and the specific recognition between TBA and thrombin was monitored by EIS. Under optimum conditions, thrombin could be quantified in a wide range of 0.1-100nM (R(2)=0.9960) with low detection limit of 0.06nM (S/N=3).
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Affiliation(s)
- Yu Li
- Department of Chemistry, Shanghai University, Shanghai 200444, PR China
| | - Qi Wang
- Department of Chemistry, Shanghai University, Shanghai 200444, PR China
| | - Yuting Zhang
- Department of Chemistry, Shanghai University, Shanghai 200444, PR China
| | - Dongmei Deng
- Shanghai Key Laboratory of High Temperature Superconductors, Department of Physics, Shanghai University, Shanghai 200444, PR China
| | - Haibo He
- Department of Chemistry, Shanghai University, Shanghai 200444, PR China
| | - Liqiang Luo
- Department of Chemistry, Shanghai University, Shanghai 200444, PR China; Shanghai Key Laboratory of High Temperature Superconductors, Department of Physics, Shanghai University, Shanghai 200444, PR China.
| | - Zhenxin Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
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38
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JIANG G, LIU X, WANG Y, RUAN S, QI H, YANG Y, ZHOU Q, ZHANG C. Design and Application of Multi-functional Electrogenerated Chemiluminescence Imaging Analyzer. ANAL SCI 2016; 32:1023-7. [DOI: 10.2116/analsci.32.1023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Guangfu JIANG
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University
| | - Xia LIU
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University
| | - Yaqin WANG
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University
| | - Sanpeng RUAN
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University
| | - Honglan QI
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University
| | - Yong YANG
- Xi’an Remax Analysis Instruments Co. Ltd
| | - Qishe ZHOU
- Xi’an Remax Analysis Instruments Co. Ltd
| | - Chengxiao ZHANG
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University
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39
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Wang W, Ge L, Sun X, Hou T, Li F. Graphene-Assisted Label-Free Homogeneous Electrochemical Biosensing Strategy based on Aptamer-Switched Bidirectional DNA Polymerization. ACS APPLIED MATERIALS & INTERFACES 2015; 7:28566-75. [PMID: 26652835 DOI: 10.1021/acsami.5b09932] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
In this contribution, taking the discrimination ability of graphene over single-stranded (ss) DNA/double-stranded (ds) DNA in combination with the electrochemical impedance transducer, we developed a novel label-free homogeneous electrochemical biosensor using graphene-modified glassy carbon electrode (GCE) as the sensing platform. To convert the specific aptamer-target recognition into ultrasensitive electrochemical signal output, a novel aptamer-switched bidirectional DNA polymerization (BDP) strategy, capable of both target recycling and exponential signal amplification, was compatibly developed in this study. In this strategy, all the designed DNA structures could be adsorbed on the graphene/GCE and, thus, serve as the electrochemical impedance signal reporter, while the target acts as a trigger of this BDP reaction, in which these designed DNA structures are bound together and, then, converted to long dsDNA duplex. The distinct difference in electrochemical impedance spectroscopy between the designed structures and generated long dsDNA duplex on the graphene/GCE allows label-free and homogeneous detection of target down to femto-gram level. The target can be displaced from aptamer through the polymerization to initiate the next recognition-polymerization cycle. Herein, the design and signaling principle of aptamer-switched BDP amplification system were elucidated, and the working conditions were optimized. This method not only provides a universal platform for electrochemical biosensing but also shows great potential in biological process researches and clinic diagnostics.
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Affiliation(s)
- Wenxiao Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao, 266109, People's Republic of China
| | - Lei Ge
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao, 266109, People's Republic of China
| | - Ximei Sun
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao, 266109, People's Republic of China
| | - Ting Hou
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao, 266109, People's Republic of China
| | - Feng Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao, 266109, People's Republic of China
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40
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Zhu B, Booth MA, Woo HY, Hodgkiss JM, Travas-Sejdic J. Label-Free, Electrochemical Quantitation of Potassium Ions from Femtomolar Levels. Chem Asian J 2015; 10:2169-75. [DOI: 10.1002/asia.201500313] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 06/29/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Bicheng Zhu
- School of Chemical Sciences; Polymer Electronics Research Centre (PERC); The University of Auckland; 23 Symonds Street Auckland New Zealand
| | - Marsilea A. Booth
- Digital Sensing Limited; 16 Beatrice Tinsley Cresent, Albany Auckland 0632 New Zealand
| | - Han Young Woo
- Department of Cogno Mechatronics Engineering; Pusan National University; Miryang 627-706 Republic of Korea
| | - Justin M. Hodgkiss
- The MacDiarmid Institute for Advanced Materials and Nanotechnology; Laby 410, Gate 6 Kelburn Parade Kelburn, Wellington New Zealand
- School of Chemical and Physical Sciences; Victoria University of Wellington; Wellington New Zealand
| | - Jadranka Travas-Sejdic
- School of Chemical Sciences; Polymer Electronics Research Centre (PERC); The University of Auckland; 23 Symonds Street Auckland New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology; Laby 410, Gate 6 Kelburn Parade Kelburn, Wellington New Zealand
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41
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Eksin E, Erdem A, Kuruc AP, Kayi H, Öğünç A. Impedimetric Aptasensor Based on Disposable Graphite Electrodes Developed for Thrombin Detection. ELECTROANAL 2015. [DOI: 10.1002/elan.201500226] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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42
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G-quadruplex based impedimetric 2-hydroxyfluorene biosensor using hemin as a peroxidase enzyme mimic. Mikrochim Acta 2015. [DOI: 10.1007/s00604-015-1565-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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43
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Chen X, Huang Y, Ma X, Jia F, Guo X, Wang Z. Impedimetric aptamer-based determination of the mold toxin fumonisin B1. Mikrochim Acta 2015. [DOI: 10.1007/s00604-015-1492-x] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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44
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Lu L, Li J, Kang T, Cheng S. Bi-functionalized aptasensor for ultrasensitive detection of thrombin. Talanta 2015; 138:273-278. [PMID: 25863401 DOI: 10.1016/j.talanta.2015.03.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 03/07/2015] [Accepted: 03/10/2015] [Indexed: 12/26/2022]
Abstract
A novel bi-functionalized aptasensor for thrombin detection was fabricated by using electrochemiluminescence (ECL) and electrochemical impedance spectroscopy (EIS) techniques. A thiol-terminated aptamer with 15 oligonucleotides was hybridized with its complementary oligonucleotides to form a double-stranded DNA (dsDNA). Then, the thiol-labeled dsDNA was assembled on a Au electrode via Au-S bond; the other distal of the dsDNA labeled with biotin was bound to QDs through a biotin-avidin conjugation. When thrombin is present in the detection solution, the aptamer can combine with thrombin, resulting in loss of CdSe QDs from the electrode surface and thereby decreasing the ECL intensity and increasing the impedance. The decreased ECL and increased EIS signals are logarithmically linear with respect to the concentration of thrombin. The linear range was 10(-10)-10(-3) μg mL(-1) (R=0.9924) for the ECL signal and 10(-10)-10(-1) μg mL(-1) (R=0.9875) for the EIS method with a common detection limit of 10(-10) μg mL(-1) (2.7 aM). In addition, the bi-functionalized aptasensor exhibited excellent selectivity, super sensitivity, a low detection limit and a wide linear range.
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Affiliation(s)
- Liping Lu
- Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China.
| | - Jiao Li
- Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China
| | - Tianfang Kang
- Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China
| | - Shuiyuan Cheng
- Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China
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45
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Esteban-Fernández de Ávila B, Araque E, Campuzano S, Pedrero M, Dalkiran B, Barderas R, Villalonga R, Kiliç E, Pingarrón JM. Dual Functional Graphene Derivative-Based Electrochemical Platforms for Detection of the TP53 Gene with Single Nucleotide Polymorphism Selectivity in Biological Samples. Anal Chem 2015; 87:2290-8. [DOI: 10.1021/ac504032d] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - Elena Araque
- Departamento
de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | - Susana Campuzano
- Departamento
de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | - María Pedrero
- Departamento
de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | - Berna Dalkiran
- Faculty
of Science, Department of Chemistry, Ankara University, 06100-Tandoğan, Ankara, Turkey
| | - Rodrigo Barderas
- Departamento
de Bioquímica y Biología Molecular, Facultad de CC.
Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
| | - Reynaldo Villalonga
- Departamento
de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
- IMDEA
Nanoscience, City University of Cantoblanco, 28049 Madrid, Spain
| | - Esma Kiliç
- Faculty
of Science, Department of Chemistry, Ankara University, 06100-Tandoğan, Ankara, Turkey
| | - José M. Pingarrón
- Departamento
de Química Analítica, Facultad de CC. Químicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain
- IMDEA
Nanoscience, City University of Cantoblanco, 28049 Madrid, Spain
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46
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Liu J, Wagan S, Dávila Morris M, Taylor J, White RJ. Achieving reproducible performance of electrochemical, folding aptamer-based sensors on microelectrodes: challenges and prospects. Anal Chem 2014; 86:11417-24. [PMID: 25337781 PMCID: PMC4238692 DOI: 10.1021/ac503407e] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
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Combining specific recognition capabilities
with the excellent
spatiotemporal resolution of small electrodes represents a promising
methodology in bioanalytical and chemical sensing. In this paper,
we report the development of reproducible electrochemical, aptamer-based
(E-AB) sensors on a gold microelectrode platform. Specifically, we
develop microscale sensors (25 μm diameter) for two representative
small molecule targets–adenosine triphosphate and tobramycin.
Furthermore, we report on the challenges encountered at this size
scale including small-magnitude signals and interference from the
irreversible reduction of dissolved oxygen and present methods to
circumvent these challenges. Through the electrochemical deposition
of dendritic gold nanostructures, we demonstrate microscale sensors
with improved performance by increasing signal-to-noise and consequently
sensitivity. Finally, we report on the use of the nonspecific adsorption
of serum proteins as an additional layer of surface passivation for
stable sensor performance. The sensor development here represents
general guidelines for fabricating electrochemical, folding aptamer-based
sensors on small-scale electrodes.
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Affiliation(s)
- Juan Liu
- Department of Chemistry and Biochemistry, University of Maryland Baltimore County , 1000 Hilltop Circle, Baltimore, Maryland 21250, United States
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47
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Rodríguez-Sevilla E, Ramírez-Silva MT, Romero-Romo M, Ibarra-Escutia P, Palomar-Pardavé M. Electrochemical quantification of the antioxidant capacity of medicinal plants using biosensors. SENSORS 2014; 14:14423-39. [PMID: 25111237 PMCID: PMC4179004 DOI: 10.3390/s140814423] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 07/28/2014] [Accepted: 07/30/2014] [Indexed: 11/16/2022]
Abstract
The working area of a screen-printed electrode, SPE, was modified with the enzyme tyrosinase (Tyr) using different immobilization methods, namely entrapment with water-soluble polyvinyl alcohol (PVA), cross-linking using glutaraldehyde (GA), and cross-linking using GA and human serum albumin (HSA); the resulting electrodes were termed SPE/Tyr/PVA, SPE/Tyr/GA and SPE/Tyr/HSA/GA, respectively. These biosensors were characterized by means of amperometry and EIS techniques. From amperometric evaluations, the apparent Michaelis-Menten constant, Km′, of each biosensor was evaluated while the respective charge transfer resistance, Rct, was assessed from impedance measurements. It was found that the SPE/Tyr/GA had the smallest Km′ (57 ± 7) μM and Rct values. This electrode also displayed both the lowest detection and quantification limits for catechol quantification. Using the SPE/Tyr/GA, the Trolox Equivalent Antioxidant Capacity (TEAC) was determined from infusions prepared with “mirto” (Salvia microphylla), “hHierba dulce” (Lippia dulcis) and “salve real” (Lippia alba), medicinal plants commonly used in Mexico.
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Affiliation(s)
- Erika Rodríguez-Sevilla
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, Área de Química Analítica, San Rafael Atlixco 186, Col. Vicentina, Del. Iztapalapa, México D.F., C.P. 09340, Mexico.
| | - María-Teresa Ramírez-Silva
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, Área de Química Analítica, San Rafael Atlixco 186, Col. Vicentina, Del. Iztapalapa, México D.F., C.P. 09340, Mexico.
| | - Mario Romero-Romo
- Departamento de Materiales, Universidad Autónoma Metropolitana-Azcapotzalco, Área Ingeniería de Materiales, Av. San Pablo 180, Col. Reynosa-Tamaulipas, Del. Azcapotzalco, México, D.F., C.P. 02200, Mexico.
| | - Pedro Ibarra-Escutia
- SEP-Instituto Tecnológico de Toluca. Departamento de Ingeniería Química y Bioquímica. Av, Tecnológico S/N. Fraccionamiento La Virgen, Metepec, Edo de México, C.P. 52149, Mexico.
| | - Manuel Palomar-Pardavé
- Departamento de Materiales, Universidad Autónoma Metropolitana-Azcapotzalco, Área Ingeniería de Materiales, Av. San Pablo 180, Col. Reynosa-Tamaulipas, Del. Azcapotzalco, México, D.F., C.P. 02200, Mexico.
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48
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Electrogenerated chemiluminescence aptasensor for ultrasensitive detection of thrombin incorporating an auxiliary probe. Talanta 2014; 130:370-6. [PMID: 25159423 DOI: 10.1016/j.talanta.2014.07.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 07/03/2014] [Accepted: 07/10/2014] [Indexed: 01/23/2023]
Abstract
A novel electrogenerated chemiluminescence (ECL) aptasensor for ultrasensitive detection of thrombin incorporating an auxiliary probe was designed by employing specific anti-thrombin aptamer as a capture probe and a ruthenium(II) complex-tagged reporter probe as an ECL probe and an auxiliary probe to assist the ECL probe close to the surface of the electrode. The ECL aptasensor was fabricated by self-assembling a thiolated capture probe on the surface of gold electrode and then hybridizing the ECL probe with the capture probe, and further self-assembling the auxiliary probe. When analyte thrombin was bound with the capture probe, the part of the dehybridized ECL probe was hybridized with the neighboring auxiliary probe, led to the tagged ruthenium(II) complex close to the electrode surface, resulted in great increase in the ECL intensity. The results showed that the increased ECL intensity was directly related to the logarithm of thrombin concentrations in the range from 5.0 × 10(-15)M to 5.0 × 10(-12)M with a detection limit of 2.0 × 10(-15)M. This work demonstrates that employing an auxiliary probe which exists nearby the capture probe can enhance the sensitivity of the ECL aptasensor. This promising strategy will be extended to the design of other biosensors for detection of other proteins and genes.
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49
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Riedel M, Kartchemnik J, Schöning MJ, Lisdat F. Impedimetric DNA Detection—Steps Forward to Sensorial Application. Anal Chem 2014; 86:7867-74. [DOI: 10.1021/ac501800q] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Marc Riedel
- Biosystems
Technology, Institute of Applied Life Sciences, Technical University of Applied Sciences Wildau, Hochschulring 1, 15745 Wildau, Germany
| | - Julia Kartchemnik
- Biosystems
Technology, Institute of Applied Life Sciences, Technical University of Applied Sciences Wildau, Hochschulring 1, 15745 Wildau, Germany
| | - Michael J. Schöning
- Institute
of Nano- and Biotechnologies, University of Applied Sciences Aachen, Heinrich-Mußmann-Strasse 1, 52428 Jülich, Germany
| | - Fred Lisdat
- Biosystems
Technology, Institute of Applied Life Sciences, Technical University of Applied Sciences Wildau, Hochschulring 1, 15745 Wildau, Germany
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50
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Fayazfar H, Afshar A, Dolati M, Dolati A. DNA impedance biosensor for detection of cancer, TP53 gene mutation, based on gold nanoparticles/aligned carbon nanotubes modified electrode. Anal Chim Acta 2014; 836:34-44. [DOI: 10.1016/j.aca.2014.05.029] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Revised: 05/06/2014] [Accepted: 05/16/2014] [Indexed: 01/28/2023]
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