1
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Sadhu VA, Jha S, Park TJ, Kailasa SK. Fluorescence 'turn-off-on' assays for neomycin sulphate and K + ions with orange-red fluorescent molybdenum nanoclusters. LUMINESCENCE 2024; 39:e4709. [PMID: 38491906 DOI: 10.1002/bio.4709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 02/09/2024] [Accepted: 02/15/2024] [Indexed: 03/18/2024]
Abstract
Fluorescent metal nanoclusters (MNCs) have found extensive application in recognizing molecular species. Here, orange-red fluorescent Arg-A. paniculata-MoNCs were synthesized using Andrographis paniculata leaf extract, arginine as a ligand, and MoCl5 as a metal precursor. The Arg-A. paniculata-MoNCs complex exhibited a quantum yield (QY) of 16.91% and excitation/emission wavelengths of 400/665 nm. The synthesized Arg-A. paniculata-MoNCs successfully acted as a probe for assaying neomycin sulphate (NS) via fluorescence turn-off and K+ ions via fluorescence turn-on mechanisms, respectively. Moreover, the developed probe was effectively used to develop a cellulose paper strip-based sensor for detection of NS and K+ ions. Arg-A. paniculata-MoNCs demonstrated great potential for sensing NS and K+ ions, with concentration ranges of 0.1-80 and 0.25-110 μM for NS and K+ ions, respectively. The as-synthesized Arg-A. paniculata-MoNCs efficiently detected NS and K+ ions in food and biofluid samples, respectively.
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Affiliation(s)
- Vibhuti Atulbhai Sadhu
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat, India
| | - Sanjay Jha
- ASPEE Shakilam Biotechnology Institute, Navsari Agricultural University, Surat, Gujarat, India
| | - Tae Jung Park
- Department of Chemistry, Research Institute of Chem-Bio Diagnostic Technology, Chung-Ang University, Seoul, Republic of Korea
| | - Suresh Kumar Kailasa
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat, India
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2
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Heydari M, Gholoobi A, Ranjbar G, Rahbar N, Sany SBT, Mobarhan MG, Ferns GA, Rezayi M. Aptamers as potential recognition elements for detection of vitamins and minerals: a systematic and critical review. Crit Rev Clin Lab Sci 2019; 57:126-144. [PMID: 31680587 DOI: 10.1080/10408363.2019.1678566] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Background: Vitamin and mineral deficiencies are prevalent globally, and extensive efforts have been made to assess their status. Most traditional methods are expensive and time-consuming; therefore, developments of rapid, simple, specific, and sensitive methods for the assessment of vitamins and minerals in biological samples are of high importance in research. Aptamers are synthetic nucleic acid single-stranded DNA or RNA that can be synthesized in vitro. They can be engineered to be analyte-specific and have been suggested as a substitute for monoclonal antibodies, due to their high sensitivity and affinity. In addition, aptamers can be chemically synthesized and readily modified for use as biosensors. These features make aptamers a promising tool for the detection of biological analytes. In this review, we provide an overview of the potential use of aptamer-based biosensors.Methods: Search terms were conducted on several online databases, including Google Scholar, PubMed, Scopus, and Science Direct from January 2000 to August 2019. Eligibility criteria were used and quality evaluation was performed. Following the review of 4349 articles, 39 articles met the inclusion criteria.Results: Aptasensors have recently been developed for the detection of vitamins by using optical methods, with a detection range from 74 pM to 204 pM, and lower limit of detection of 2.4 pM. Both electrochemical and optical methods have been used for detection of minerals, however electrochemical methods show a wider linear range and lower detection limits compared to optical methods with a wide linear range from 0.2 fM to 1.0 mM and limit of detection of 14.7 fM.Conclusion: The current report reviews recent developments in aptamer-based biosensors for detection of vitamins and minerals. Studies have shown that aptasensors' properties are suitable for the quantification of vitamins and minerals with high sensitivity, affinity, and specificity. Nevertheless, the limitations and future directions of aptamers require further research and new technological innovation.
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Affiliation(s)
- Maryam Heydari
- Nanotechnology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Aida Gholoobi
- Department of Modern Sciences and Technologies, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Golnaz Ranjbar
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Nadereh Rahbar
- Nanotechnology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Medicinal Chemistry Departments, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Seyedeh Belin Tavakoly Sany
- Department of Health Education and Health Promotion, Faculty of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Majid Ghayour Mobarhan
- Metabolic Syndrome Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Gordon A Ferns
- Division of Medical Education, Brighton & Sussex Medical School, Brighton, UK
| | - Majid Rezayi
- Metabolic Syndrome Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Medical Toxicology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Medical Biotechnology and Nanotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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3
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Zhang L, Yuan Y, Zhang Y, Liu Z, Xiao W, Nie J, Li J. Equipment-Free Quantitative Aptamer-Based Colorimetric Assay Based on Target-Mediated Viscosity Change. ACS OMEGA 2018; 3:1451-1457. [PMID: 30023804 PMCID: PMC6044812 DOI: 10.1021/acsomega.7b01814] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Accepted: 01/24/2018] [Indexed: 06/08/2023]
Abstract
In this paper, we describe an aptamer-based colorimetric assay (ABCA), which integrates enzyme-loaded microparticles for signal amplification with distance measurement for equipment-free quantitative readout. The distance measurement readout is on the basis of target-induced selective reduction in viscosity of reaction solution. Its utility is well demonstrated with inexpensive, sensitive, and selective detection of adenosine (model analyte) in buffer samples and real samples of human serum and urine with the naked eye. This ABCA method just requires operators to simply count the number of colored distance-relevant marked bars on the calibrated glass microsyringes (testing containers) to provide quantitative results. It thus holds great promise for wide applications particularly in limited-resource settings.
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4
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Zainudin AA, Fen YW, Yusof NA, Al-Rekabi SH, Mahdi MA, Omar NAS. Incorporation of surface plasmon resonance with novel valinomycin doped chitosan-graphene oxide thin film for sensing potassium ion. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 191:111-115. [PMID: 29024848 DOI: 10.1016/j.saa.2017.10.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 09/22/2017] [Accepted: 10/03/2017] [Indexed: 06/07/2023]
Abstract
In this study, the combination of novel valinomycin doped chitosan-graphene oxide (C-GO-V) thin film and surface plasmon resonance (SPR) system for potassium ion (K+) detection has been developed. The novel C-GO-V thin film was deposited on the gold surface using spin coating technique. The system was used to monitor SPR signal for K+ in solution with and without C-GO-V thin film. The K+ can be detected by measuring the SPR signal when C-GO-V thin film is exposed to K+ in solution. The sensor produces a linear response for K+ ion up to 100ppm with sensitivity and detection limit of 0.00948°ppm-1 and 0.001ppm, respectively. These results indicate that the C-GO-V film is high potential as a sensor element for K+ that has been proved by the SPR measurement.
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Affiliation(s)
- Afiq Azri Zainudin
- Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Yap Wing Fen
- Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Functional Devices Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Nor Azah Yusof
- Functional Devices Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Sura Hmoud Al-Rekabi
- Department of Computer and Communication Systems Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Mohd Adzir Mahdi
- Department of Computer and Communication Systems Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Nur Alia Sheh Omar
- Functional Devices Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
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5
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Ding Y, Li X, Guo Y, Duan W, Ling J, Zha L, Yan J, Zou Y, Cai J. Estimation of postmortem interval by vitreous potassium evaluation with a novel fluorescence aptasensor. Sci Rep 2017; 7:1868. [PMID: 28500353 PMCID: PMC5431803 DOI: 10.1038/s41598-017-02027-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 04/04/2017] [Indexed: 01/17/2023] Open
Abstract
Estimation of postmortem interval (PMI) is a central role in medico-legal identification. Analysis of vitreous potassium ions (K+) concentration is frequently used by forensic workers to estimate PMI. This paper describes interdisciplinary research to introduce fluorescence sensing techniques into forensic medicine. On the basis of silver nanoclusters (AgNCs) probe stabilized by DNA, a simple and highly sensitive fluorescence aptasensor has been proposed to selectively detect K+ ions. The linear range for K+ ions was found to be 0.1 nM-1 mM, with limit of detection of 0.06 nM. Moreover, 63 vitreous humour cases within 36 h after death were further studied to verify the utility of K+ ions in estimating the PMI. By the fluorescence aptasensor method, a new formula was built to determine the postmortem interval based on K+ ions concentration: PMI(h) = −0.55 + 1.66 × CK+(r = 0.791). And the real significance of this research was demonstrated by additional 6 cases with known PMIs. In comparison with the conventional method, the presented aptasensor strategy is cost-effective and easy in measuring vitreous K+, which may be potentially a better way for estimation of PMI in medico-legal practice.
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Affiliation(s)
- Yanjun Ding
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, 410013, Hunan, P.R. China
| | - Xingmei Li
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, 410013, Hunan, P.R. China.,Department of Pathophysiology, School of Basic Medical Sciences, Central South University, Changsha, 410013, Hunan, P.R. China
| | - Yadong Guo
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, 410013, Hunan, P.R. China
| | - Weicheng Duan
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, 410013, Hunan, P.R. China
| | - Jiang Ling
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, 410013, Hunan, P.R. China.,Department of Pathophysiology, School of Basic Medical Sciences, Central South University, Changsha, 410013, Hunan, P.R. China
| | - Lagabaiyla Zha
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, 410013, Hunan, P.R. China
| | - Jie Yan
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, 410013, Hunan, P.R. China
| | - Ying Zou
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, 410013, Hunan, P.R. China
| | - Jifeng Cai
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, 410013, Hunan, P.R. China.
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6
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Thanayupong E, Suttisintong K, Sukwattanasinitt M, Niamnont N. Turn-on fluorescent sensor for the detection of cyanide based on a novel dicyanovinyl phenylacetylene. NEW J CHEM 2017. [DOI: 10.1039/c6nj03794a] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A novel phenylacetylene derivative (3) was successfully synthesized via Sonogashira coupling and a Knoevenagel reaction for cyanide ion detection.
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Affiliation(s)
- Eknarin Thanayupong
- Organic Synthesis, Electrochemistry & Natural Product Research Unit, Department of Chemistry, Faculty of Science, King Mongkut's University of Technology Thonburi
- Bangkok
- Thailand
- Luminescence & Scintillation Materials Research Unit, Faculty of Science, King Mongkut's University of Technology Thonburi
- Bangkok
| | - Khomson Suttisintong
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Thanon Phahonyothin, Tumbon Khlong Nueng, Amphoe Khlong Luang
- Thailand
| | - Mongkol Sukwattanasinitt
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science and Nanotec-CU Center of Excellence on Food and Agriculture, Chulalongkorn University
- Bangkok
- Thailand
| | - Nakorn Niamnont
- Organic Synthesis, Electrochemistry & Natural Product Research Unit, Department of Chemistry, Faculty of Science, King Mongkut's University of Technology Thonburi
- Bangkok
- Thailand
- Luminescence & Scintillation Materials Research Unit, Faculty of Science, King Mongkut's University of Technology Thonburi
- Bangkok
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7
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Li J, Dai Z, Li H. Controllable Mn-doped ZnO nanorods for direct assembly of a photoelectrochemical aptasensor. Analyst 2017; 142:2177-2184. [DOI: 10.1039/c7an00446j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A label-free photoelectrochemical (PEC) aptasensor for K+ was first constructed by direct self-assembly of the K+ aptamer onto the electrodeposited Mn-doped ZnO nanorods.
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Affiliation(s)
- Jing Li
- Jiangsu Key Laboratory of Biofunctional Materials
- College of Chemistry and Materials Science
- Nanjing Normal University
- Nanjing 210023
- P.R. China
| | - Zhihui Dai
- Jiangsu Key Laboratory of Biofunctional Materials
- College of Chemistry and Materials Science
- Nanjing Normal University
- Nanjing 210023
- P.R. China
| | - Hongbo Li
- College of Chemistry and Chemical Engineering
- Yancheng Institute of Technology
- Yancheng 224051
- P.R. China
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8
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Yan J, Huang Y, Zhang C, Fang Z, Bai W, Yan M, Zhu C, Chen A. Aptamer based photometric assay for the antibiotic sulfadimethoxine based on the inhibition and reactivation of the peroxidase-like activity of gold nanoparticles. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1994-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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9
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A ratiometric fluorescent probe for hyaluronidase detection via hyaluronan-induced formation of red-light emitting excimers. Biosens Bioelectron 2016; 79:776-83. [DOI: 10.1016/j.bios.2016.01.019] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Revised: 12/23/2015] [Accepted: 01/06/2016] [Indexed: 12/27/2022]
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10
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A sensitive aptasensor for colorimetric detection of adenosine triphosphate based on the protective effect of ATP-aptamer complexes on unmodified gold nanoparticles. Biosens Bioelectron 2015; 78:315-320. [PMID: 26638040 DOI: 10.1016/j.bios.2015.11.043] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 11/13/2015] [Accepted: 11/14/2015] [Indexed: 12/16/2022]
Abstract
Adenosine triphosphate (ATP) is the most direct source of energy in organisms. This study is the first to demonstrate that ATP-aptamer complexes provide greater protection for unmodified gold nanoparticles (AuNPs) against salt-induced aggregation than either aptamer or ATP alone. This protective effect was confirmed using transmission electron microscopy, dynamic light scattering, Zeta potential measurement, and fluorescence polarization techniques. Utilizing controlled particle aggregation/dispersion as a gauge, a sensitive and selective aptasensor for colorimetric detection of ATP was developed using ATP-binding aptamers as the identification element and unmodified AuNPs as the probe. This aptasensor exhibited a good linear relationship between the absorbance and the logarithm concentration of ATP within a 50-1000 nM range. ATP analogs such as guanosine triphosphate, uridine triphosphate and cytidine triphosphate resulted in little or no interference in the determination of ATP.
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11
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Ji X, Li J, Yang C. A label-free electrochemical aptasensor for the analysis of the potassium ion. J Immunoassay Immunochem 2015; 36:162-9. [PMID: 24785341 DOI: 10.1080/15321819.2014.915221] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Herein, a simple and novel electrochemical method for the detection of potassium ions (K(+)) was developed. In the presence of potassium ions, the potassium ions aptamer will form a G-quadruplex complex. Thus, further addition of hemin in the presence of potassium ions will lead to the formation of a recombined G-quadruplex. Then the electroactive label, hemin, will give an electrochemical response. The linear range of the method covered a large variation of K(+) concentration from 0.1 nM to 0.1 μ M and the detection limit of 0.1 nM was obtained. Moreover, this assay was able to detect K(+) with high selectivity and had great potential applications.
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Affiliation(s)
- Xiaoxia Ji
- a Department of ICU , The Second People's Hospital of Wuxi , Wuxi , China
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12
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Cywiński PJ, Olejko L, Löhmannsröben HG. A time-resolved luminescent competitive assay to detect L-selectin using aptamers as recognition elements. Anal Chim Acta 2015; 887:209-215. [PMID: 26320804 DOI: 10.1016/j.aca.2015.06.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 06/12/2015] [Accepted: 06/15/2015] [Indexed: 12/01/2022]
Abstract
L-selectin is a protein with potential importance for numerous diseases and clinical disorders. In this paper, we present a new aptamer-based luminescent assay developed to detect L-selectin. The sensing system working principle is based on Förster Resonance Energy Transfer (FRET) from a donor terbium complex (TbC) to an acceptor cyanine dye (Cy5). In the present approach, the biotinylated aptamer is combined with Cy5-labelled streptavidin (Cy5-Strep) to yield an aptamer-based acceptor construct (Apta-Cy5-Strep), while L-selectin is conjugated using luminescent TbC. Upon aptamer binding to the TbC-labelled L-selectin (L-selectin-TbC), permanent donor-acceptor proximity is established which allows for radiationless energy transfer to occur. However, when unlabelled L-selectin is added, it competes with the L-selectin-TbC and the FRET signal decreases as the L-selectin concentration increases. FRET from the TbC to Cy5 was observed with time-gated time-resolved luminescence spectroscopy. A significant change in the corrected luminescence signal was observed in the dynamic range of 10-500 ng/mL L-selectin, the concentration range relevant for accelerated cognitive decline of Alzheimer's disease, with a limit of detection (LOD) equal to 10 ng/mL. The aptasensor-based assay is homogeneous and can be realized within one hour. Therefore, this method has the potential to become an alternative to tedious heterogeneous analytical methods, e.g. based on enzyme-linked immunosorbent assay (ELISA).
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Affiliation(s)
- Piotr J Cywiński
- Functional Materials and Devices, Fraunhofer Institute for Applied Polymer Research, Geiselberstr.69, 14476 Potsdam-Golm, Germany; Department of Physical Chemistry, Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany.
| | - Lydia Olejko
- Department of Physical Chemistry, Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany
| | - Hans-Gerd Löhmannsröben
- Department of Physical Chemistry, Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany
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Li L, Li W. Colorimetric kinetic determination of potassium ions based on the use of a specific aptamer and catalytically active gold nanoparticles. Mikrochim Acta 2015. [DOI: 10.1007/s00604-015-1581-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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14
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Chen Z, Tan L, Hu L, Luan Y. Superior fluorescent probe for detection of potassium ion. Talanta 2015; 144:247-51. [PMID: 26452817 DOI: 10.1016/j.talanta.2015.06.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 05/31/2015] [Accepted: 06/05/2015] [Indexed: 12/27/2022]
Abstract
Here, a simple, and highly sensitive fluorescent assay is designed to monitor K(+). The versatile, robust biosensing strategy is based on the specific recognition utility of label-free aptamers with their targets and PicoGreen dye as the signal probe. The aptamers undergo a conformational change to a secondary structure such as G-quadruplex in the presence of targets. In addition to a conformational change with its targets, the remaining single-stranded DNA (ssDNA) aptamer form a duplex structure with its complete complementary sequence. Conformational changes of aptamers as well as fluorescence amplification produce clear signal-off in the presence of targets. Fluorescent assay employing this mechanism for the detection of K(+) is highly sensitive, and selective. The detection limit of the K(+) assay is determined to be 2.37 pM. The sensing strategy is low-cost and simple in its operation without requirement for complex labeling of probe DNA or sophisticated synthesis of the fluorescent compound. Also, the method has less structural requirement of complexes of aptamers with their targets, thus rending its wilder applications for various targets.
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Affiliation(s)
- Zhengbo Chen
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
| | - Lulu Tan
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Liangyu Hu
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Yunxia Luan
- Beijing Research Center for Agricultural Standards and Testing, Beijing 100097, China
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15
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Hu J, Ni P, Dai H, Sun Y, Wang Y, Jiang S, Li Z. Aptamer-based colorimetric biosensing of abrin using catalytic gold nanoparticles. Analyst 2015; 140:3581-6. [PMID: 25854313 DOI: 10.1039/c5an00107b] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study we propose a simple and sensitive colorimetric aptasensor for the quantitative analysis of abrin by using catalytic AuNPs for the first time. AuNPs possess the peroxidase-like activity that can catalyse 3,3,5,5-tetramethylbenzidine (TMB) in the presence of H2O2, leading to color change of the solution. It is interesting to find that the peroxidase-like activity of AuNPs can be improved by surface activation with a target-specific aptamer. However, with a target molecule, the aptamer is desorbed from the AuNPs surface, resulting in a decrease of the catalytic abilities of AuNPs. The color change of the solution is relevant to the target concentration, and this can be judged by the naked eye and monitored by using a UV-vis spectrometer. The linear range for the current analytical system was from 0.2 nM to 17.5 nM. The corresponding limit of detection (LOD) was 0.05 nM. Some other proteins such as thrombin (Th), glucose oxidase (GOx), and bovine serum albumin (BSA) all had a negligible effect on the determination of abrin. Furthermore, several practical samples spiked with abrin were analyzed using the proposed method with excellent recoveries. This aptamer-based colorimetric biosensor is superior to other conventional methods owing to its simplicity, low cost, and high sensitivity.
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Affiliation(s)
- Jingting Hu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China
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16
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Guo Y, Chen Y, Wei Y, Li H, Dong C. Label-free fluorescent aptasensor for potassium ion using structure-switching aptamers and berberine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt C:1635-1641. [PMID: 25459726 DOI: 10.1016/j.saa.2014.10.058] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 10/09/2014] [Accepted: 10/12/2014] [Indexed: 06/04/2023]
Abstract
A simple, rapid and label-free fluorescent aptasensor was fabricated for the detection of potassium ion (K(+) ion) in aqueous solution using K(+) ion-stabilized single stranded DNA (ssDNA) with G-rich sequence as the recognition element and a fluorescent dye, berberine, as the fluorescence probe. In the presence of K(+) ion, the G-rich ssDNA is promoted to form the aptamer-target complex with a G-quadruplex conformation, and berberine binding to the G-quadruplex structure results in the enhancement of its fluorescence. The fluorescence intensity of the sensing system displayed a calibration response for K(+) ion in the range of 0-1600μM with a detection limit of 31nM (S/N=3) and a relative standard deviation (RSD) of 0.45%. This label-free fluorescence aptasensor is conveniently and effectively applicable for analysis of K(+) ion in blood serum samples with the recovery range of 81.7-105.3%. The assay for detection of potassium ion is easy, economical, robust, and stable in rough conditions.
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Affiliation(s)
- Yanqing Guo
- Department of Chemistry, Jinzhong University, Jinzhong, Shanxi 030600, PR China; Institute of Environmental Science, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, PR China
| | - Yanxia Chen
- Institute of Environmental Science, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, PR China
| | - Yanli Wei
- Institute of Environmental Science, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, PR China.
| | - Huanhuan Li
- Institute of Environmental Science, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, PR China
| | - Chuan Dong
- Institute of Environmental Science, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, PR China.
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17
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Lee HL, Dhenadhayalan N, Lin KC. Metal ion induced fluorescence resonance energy transfer between crown ether functionalized quantum dots and rhodamine B: selectivity of K+ ion. RSC Adv 2015. [DOI: 10.1039/c4ra10925b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A ratiometric fluorescent metal ion sensor based on the mechanism of fluorescence resonance energy transfer between 15-crown-5-ether capped CdSe/ZnS quantum dots and 15-crown-5-ether attached rhodamine B.
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Affiliation(s)
- Hsin-Lung Lee
- Department of Chemistry
- National Taiwan University
- Institute of Atomic and Molecular Sciences
- Academia Sinica
- Taipei 106
| | - Namasivayam Dhenadhayalan
- Department of Chemistry
- National Taiwan University
- Institute of Atomic and Molecular Sciences
- Academia Sinica
- Taipei 106
| | - King-Chuen Lin
- Department of Chemistry
- National Taiwan University
- Institute of Atomic and Molecular Sciences
- Academia Sinica
- Taipei 106
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18
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Ren J, Wang T, Wang E, Wang J. Versatile G-quadruplex-mediated strategies in label-free biosensors and logic systems. Analyst 2015; 140:2556-72. [DOI: 10.1039/c4an02282c] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review addresses how G-quadruplex (G4)-mediated biosensors convert the events of target recognition into a measurable physical signal. The application of label-free G4-strategies in the construction of logic systems is also discussed.
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Affiliation(s)
- Jiangtao Ren
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Tianshu Wang
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Erkang Wang
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Jin Wang
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
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19
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Hu J, Ni P, Dai H, Sun Y, Wang Y, Jiang S, Li Z. A facile label-free colorimetric aptasensor for ricin based on the peroxidase-like activity of gold nanoparticles. RSC Adv 2015. [DOI: 10.1039/c4ra17327a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A facile colorimetric aptasensor for ricin based on the peroxidase-like activity of gold nanoparticles was demonstrated for the first time.
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Affiliation(s)
- Jingting Hu
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- PR China
| | - Pengjuan Ni
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- PR China
| | - Haichao Dai
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- PR China
| | - Yujing Sun
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- PR China
| | - Yilin Wang
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- PR China
| | - Shu Jiang
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- PR China
| | - Zhuang Li
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- PR China
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20
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Chen Z, Zhou T, Zhang C, Ma H, Lin Y, Li K. Aptasensor for label-free square-wave voltammetry detection of potassium ions based on gold nanoparticle amplification. RSC Adv 2014. [DOI: 10.1039/c4ra05058d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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21
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Xu Y, Zhou W, Zhou M, Xiang Y, Yuan R, Chai Y. Toehold strand displacement-driven assembly of G-quadruplex DNA for enzyme-free and non-label sensitive fluorescent detection of thrombin. Biosens Bioelectron 2014; 64:306-10. [PMID: 25240130 DOI: 10.1016/j.bios.2014.09.018] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 09/03/2014] [Accepted: 09/04/2014] [Indexed: 01/08/2023]
Abstract
Based on a new signal amplification strategy by the toehold strand displacement-driven cyclic assembly of G-quadruplex DNA, the development of an enzyme-free and non-label aptamer sensing approach for sensitive fluorescent detection of thrombin is described. The target thrombin associates with the corresponding aptamer of the partial dsDNA probes and liberates single stranded initiation sequences, which trigger the toehold strand displacement assembly of two G-quadruplex containing hairpin DNAs. This toehold strand displacement reaction leads to the cyclic reuse of the initiation sequences and the production of DNA assemblies with numerous G-quadruplex structures. The fluorescent dye, N-Methyl mesoporphyrin IX, binds to these G-quadruplex structures and generates significantly amplified fluorescent signals to achieve highly sensitive detection of thrombin down to 5 pM. Besides, this method shows high selectivity towards the target thrombin against other control proteins. The developed thrombin sensing method herein avoids the modification of the probes and the involvement of any enzyme or nanomaterial labels for signal amplification. With the successful demonstration for thrombin detection, our approach can be easily adopted to monitor other target molecules in a simple, low-cost, sensitive and selective way by choosing appropriate aptamer/ligand pairs.
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Affiliation(s)
- Yunying Xu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Wenjiao Zhou
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Ming Zhou
- (b)Department of Chemistry, University of Washington, Seattle, WA 98195, USA
| | - 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.
| | - 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
| | - Yaqin Chai
- 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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22
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Verdian-Doghaei A, Housaindokht MR, Abnous K. A fluorescent aptasensor for potassium ion detection-based triple-helix molecular switch. Anal Biochem 2014; 466:72-5. [PMID: 25173515 DOI: 10.1016/j.ab.2014.08.014] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 08/12/2014] [Accepted: 08/15/2014] [Indexed: 12/21/2022]
Abstract
Here, a biosensor based on a quadruplex-forming aptamer for the determination of potassium ion (K(+)) is presented. The aptamer was used as a molecular recognition element; it was adjacent to two arm fragments and a dual-labeled oligonucleotide serving as a signal transduction probe (STP) that is complementary of the arm fragment sequence. In the presence of K(+), the aptamer was displaced from the STP, which was accompanied by decreased signal. The quenching percentage of fluorescence intensity was proportional to the concentration of K(+) in the range of 0.05 to 1.4mM. A detection limit of 0.014 mM was achieved. Furthermore, other metal ions, such as Na(+), Li(+), NH4(+), Mg(2+), and Ca(2+), caused no notable interference on the detection of K(+).
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Affiliation(s)
- A Verdian-Doghaei
- Biophysical Chemistry Laboratory, Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.
| | - M R Housaindokht
- Biophysical Chemistry Laboratory, Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Kh Abnous
- Pharmaceutical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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23
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Verdian-Doghaei A, Housaindokht MR, Bozorgmehr MR, Abnous K. Conformational switch of insulin-binding aptamer into G-quadruplex induced by K⁺ and Na⁺: an experimental and theoretical approach. J Biomol Struct Dyn 2014; 33:1153-63. [PMID: 24933356 DOI: 10.1080/07391102.2014.935482] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Guanine-rich sequences can form the G-quadruplex structure in the presence of specific metal ions. Here, circular dichroism, UV-vis absorption, fluorescence, and molecular dynamics simulation studies revealed that insulin-binding aptamer (IBA) could form an intramolecular G-quadruplex structure after binding K(+). Circular dichroism (CD) spectra demonstrated that IBA could fold into a parallel G-quadruplex with a strong positive peak at 263 nm. Analysis of equilibrium titration data revealed that cation binding was cooperative with the Hill coefficient of 2.01 in K(+) and 1.90 in Na(+). Thermal denaturation assays indicated that K(+)-induced G-quadruplex is more stable than Na(+)-induced structure. Folding of IBA into G-quadruplex leading to the contact quenching occurs as a result of the formation of a nonfluorescent complex between donor and acceptor. Based on fluorescence quenching of IBA folding, a potassium-sensing aptasensor in the range of 0-1.4 mM was proposed. Since the quenching process was predominantly static, the binding constant and the number of binding sites were determined. In this research, based on the experimental data, the initial model of IBA G-quadruplex was constructed by molecular modeling method. The modeling structure of IBA is an intramolecular parallel-strand quadruplex conformation with two guanine tetrads. The extended molecular dynamics simulation for the model indicated that the G-quadruplex maintains its structure very well in aqueous solution in presence of K(+) in the central cavity. In contrast, it was demonstrated that the G-quadruplex structure of model in the water collapses in absence of this cation.
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Affiliation(s)
- A Verdian-Doghaei
- a Biophysical Chemistry Laboratory, Department of Chemistry, Faculty of Science , Ferdowsi University of Mashhad , Mashhad , Iran
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24
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Sahana S, Bharadwaj PK. Detection of alkali and alkaline earth metal ions by fluorescence spectroscopy. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.03.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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25
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Cho S, Park L, Chong R, Kim YT, Lee JH. Rapid and simple G-quadruplex DNA aptasensor with guanine chemiluminescence detection. Biosens Bioelectron 2014; 52:310-6. [PMID: 24080210 PMCID: PMC7126785 DOI: 10.1016/j.bios.2013.09.017] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2013] [Revised: 08/29/2013] [Accepted: 09/07/2013] [Indexed: 02/02/2023]
Abstract
Cost-effective and sensitive aptasensor with guanine chemiluminescence detection capable of simply quantifying thrombin in human serum was developed using thrombin aptamer (TBA), one of the G-quadruplex DNA aptamers, without expensive nanoparticles and complicated procedures. Guanines of G-quadruplex TBA-conjugated carboxyfluorescein (6-FAM) bound with thrombin do not react with 3,4,5-trimethoxylphenylglyoxal (TMPG) in the presence of tetra-n-propylammonium hydroxide (TPA), whereas guanines of free TBA- and TBA-conjugated 6-FAM immobilized on the surface of graphene oxide rapidly react with TMPG to emit light. Thus, guanine chemiluminescence in 5% human serum with thrombin was lower than that without thrombin when TBA-conjugated 6-FAM was added in two samples and incubated for 20 min. In other words, the brightness of guanine chemiluminescence was quenched due to the formation of G-quadruplex TBA-conjugated 6-FAM bound with thrombin in a sample. High-energy intermediate, capable of emitting dim light by itself, formed from the reaction between guanines of TBA and TMPG in the presence of TPA, transfers energy to 6-FAM to emit bright light based on the principle of chemiluminescence energy transfer (CRET). G-quadruplex TBA aptasensor devised using the rapid interaction between TBA-conjugated 6-FAM and thrombin quantified trace levels of thrombin without complicated procedures. The limit of detection (LOD = background + 3 × standard deviation) of G-quadruplex TBA aptasensor with good linear calibration curve, accuracy, precision, and recovery was as low as 12.3 nM in 5% human serum. Using the technology reported in this research, we expect that various types of G-quadruplex DNA aptasensors capable of specifically sensing a target molecule such as ATP, HIV, ochratoxin, potassium ions, and thrombin can be developed.
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Affiliation(s)
- Sandy Cho
- Luminescent MD, LLC, 20140 Scholar Dr., Hagerstown, MD 21742, United States
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26
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Hu J, Dai H, Sun Y, Ni P, Wang Y, Jiang S, Li Z. Highly sensitive and rapid visual detection of ricin using unmodified gold nanoparticle probes. RSC Adv 2014. [DOI: 10.1039/c4ra06001f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A sensitive aptamer-based colorimetric biosensor for the detection of ricin using unmodified gold nanoparticles as probe was developed.
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Affiliation(s)
- Jingting Hu
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- University of Chinese Academy of Sciences
- Changchun, PR China
- Graduate School of University of Chinese Academy of Sciences
| | - Haichao Dai
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- University of Chinese Academy of Sciences
- Changchun, PR China
- Graduate School of University of Chinese Academy of Sciences
| | - Yujing Sun
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- University of Chinese Academy of Sciences
- Changchun, PR China
| | - Pengjuan Ni
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- University of Chinese Academy of Sciences
- Changchun, PR China
- Graduate School of University of Chinese Academy of Sciences
| | - Yilin Wang
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- University of Chinese Academy of Sciences
- Changchun, PR China
- Graduate School of University of Chinese Academy of Sciences
| | - Shu Jiang
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- University of Chinese Academy of Sciences
- Changchun, PR China
- Graduate School of University of Chinese Academy of Sciences
| | - Zhuang Li
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- University of Chinese Academy of Sciences
- Changchun, PR China
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27
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Colorimetric detection of potassium ions using aptamer-functionalized gold nanoparticles. Anal Chim Acta 2013; 787:189-92. [PMID: 23830438 DOI: 10.1016/j.aca.2013.05.020] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 04/27/2013] [Accepted: 05/06/2013] [Indexed: 11/20/2022]
Abstract
Herein, a simple and novel colorimetric method for detection of potassium ions (K(+)) was developed. The colorimetric experiments revealed that upon the addition of K(+), the conformation of anti-K(+) aptamer in solution changed from random coil structure to compact rigid G-quadruplex one. This compact rigid G-quadruplex structure could not protect AuNPs against K(+)-induced aggregation, and thus the visible color change from wine-red to blue-purple could be observed by the naked eye. The linear range of the colorimetric aptasensor covered a large variation of K(+) concentration from 5 nM to 1 μM and the detection limit of 5 nM was obtained. Moreover, this assay was able to detect K(+) with high selectivity and had great potential applications.
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28
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Chen Z, Chen L, Ma H, Zhou T, Li X. Aptamer biosensor for label-free impedance spectroscopy detection of potassium ion based on DNA G-quadruplex conformation. Biosens Bioelectron 2013; 48:108-12. [PMID: 23665159 DOI: 10.1016/j.bios.2013.04.007] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 03/22/2013] [Accepted: 04/02/2013] [Indexed: 01/06/2023]
Abstract
Herein, a label-free and highly sensitive electrochemical impedance spectroscopy (EIS) aptasensor for the detection of potassium ion (K⁺) was developed based on a conformational change in which a K⁺-stabilized single stranded DNA (ssDNA) with G-rich sequence was used as the recognition element. In the measurement of K⁺ ions, the change in interfacial electron transfer resistance (R(ct)) of the sensor using a redox couple of [Fe(CN)₆]³⁻/⁴⁻ as the probe was monitored. In the presence of K⁺, the G-rich DNA folded into the G-quadruplex structure, and then K⁺ can bind to the G-quadruplex structure, leading to an increase in the R(ct). The Rct increased with K⁺ concentration, and the plot of R(ct) against the logarithm of K⁺ concentration is linear over the range from 0.1 nM to 1 mM with a detection limit of 0.1 nM. Other metal ions, such as Ca²⁺, Mg²⁺, Na⁺, Li⁺, Al³⁺, Zn²⁺, Cu²⁺, and Ni²⁺ caused no notable interference on the detection of K⁺. The scheme reported herein is applicable to the detection of other kinds of G-rich aptamer-binding chemicals and biomolecules.
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Affiliation(s)
- Zhengbo Chen
- Department of Chemistry, Capital Normal University, Beijing 100048, China.
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29
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Niamnont N, Kimpitak N, Tumcharern G, Rashatasakhon P, Sukwattanasinitt M. Highly sensitive salicylic fluorophore for visual detection of picomole amounts of Cu2+. RSC Adv 2013. [DOI: 10.1039/c3ra44239j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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30
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Chen A, Jiang X, Zhang W, Chen G, Zhao Y, Tunio TM, Liu J, Lv Z, Li C, Yang S. High sensitive rapid visual detection of sulfadimethoxine by label-free aptasensor. Biosens Bioelectron 2012; 42:419-25. [PMID: 23228493 DOI: 10.1016/j.bios.2012.10.059] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 09/29/2012] [Accepted: 10/17/2012] [Indexed: 02/01/2023]
Abstract
Quickly and sensitively detection of antibiotic residues in animal products often requires time-consuming techniques and expensive instrumentation. To address these limitations, a high sensitive aptasensor for sulfadimethoxine (SDM) using unmodified gold nanoparticles (AuNPs) was developed in the present study. The assay sensitivity was improved by optimizing several key parameters such as the amount of aptamer adsorbed to AuNPs, the concentration of salt and the AuNPs pH value. To our knowledge, this is the first time to investigate the effect of AuNPs pH value on the sensitivity of aptamer-AuNPs based label-free assay. The best procedure for SDM analysis in our system was: the pH value at 8.0, and the concentration of aptamer at 2 μM, and the concentration of salt at 2 M. The linear range for the current analytical system was from 50 ng/mL to 1 μg/mL, and the detection limit was 50 ng/mL, which is lower than the Maximum Residue Limit (MRL) (100 ng/mL) in edible animal tissues regulated by China and European commission. Our study provides a simple, fast, and easy to read method for SDM analysis with high sensitivity, which can be applied in future on-site detection in animal products.
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Affiliation(s)
- Ailiang Chen
- Institute of Quality Standards and Testing Technology for Agro-products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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31
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Chang CC, Wei SC, Wu TH, Lee CH, Lin CW. Aptamer-based colorimetric detection of platelet-derived growth factor using unmodified gold nanoparticles. Biosens Bioelectron 2012. [PMID: 23202340 DOI: 10.1016/j.bios.2012.10.072] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We developed a simple method for the detection of platelet-derived growth factors (PDGFs) based on base stacking effect coupled with an unmodified gold nanoparticle (AuNP) indicator. In the absence of a target, an aptamer probe and a capture probe stably co-exist in a solution, as it is difficult to sustain an interaction between both these probes due to the short 8bp duplex. However, when a target protein binds to the aptamer probe, the strong base stacking effect can lead to a favorable and stable interaction between the aptamer and capture probes. Hence, the capture probe dissociates from the AuNP surfaces, inducing AuNP aggregation. Compared with other AuNP-based aptasensors for PDGFs, using this base stacking effect can overcome a structured-aptamer method's limitation of requiring thiolated-aptamer-modified AuNPs. Under optimal detection conditions, this label-free colorimetric sensor could detect PDGFs down to 6nM with high selectivity in the presence of other interferring proteins. This simple detection approach provides viable methods for a structured-aptamer sensing protocol.
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Affiliation(s)
- Chia-Chen Chang
- Institute of Biomedical Engineering, National Taiwan University, Taipei 10617, Taiwan
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32
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Hu Y, Han D, Zhang Q, Wu T, Li F, Niu L. Perylene ligand wrapping G-quadruplex DNA for label-free fluorescence potassium recognition. Biosens Bioelectron 2012; 38:396-401. [DOI: 10.1016/j.bios.2012.06.042] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2012] [Revised: 06/16/2012] [Accepted: 06/21/2012] [Indexed: 02/02/2023]
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33
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Siripornnoppakhun W, Niamnont N, Krumsri A, Tumcharern G, Vilaivan T, Rashatasakhon P, Thayumanavan S, Sukwattanasinitt M. Inclusion Complexes between Amphiphilic Phenyleneethynylene Fluorophores and Cyclodextrins in Aqueous Media. J Phys Chem B 2012; 116:12268-74. [DOI: 10.1021/jp3057652] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
| | - Nakorn Niamnont
- Department
of Chemistry, Faculty
of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
| | - Akachai Krumsri
- Department of Chemistry, Faculty
of Science, Chulalongkorn University, Bangkok
10330, Thailand
| | - Gamolwan Tumcharern
- Thailand National Nanotechnology
Center, National Science and Technology Development Agency, Patumthanee 12120, Thailand
| | - Tirayut Vilaivan
- Department of Chemistry, Faculty
of Science, Chulalongkorn University, Bangkok
10330, Thailand
| | - Paitoon Rashatasakhon
- Department of Chemistry, Faculty
of Science, Chulalongkorn University, Bangkok
10330, Thailand
| | - S. Thayumanavan
- Department of Chemistry, University of Massachusetts at Amherst, Amherst, Massachusetts
01003, United States
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