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Yao H, Wang JW, Niu YB, Yang BH, Cao WY, Yang FX, Qin SN, Wei TB, Lin Q. Detecting Pb 2+ in aqueous environment and live cells by amphiphilic pillar[5]arene-assembled supramolecular sensor based on host-guest charge transfer mechanism. Talanta 2024; 279:126607. [PMID: 39067204 DOI: 10.1016/j.talanta.2024.126607] [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: 05/01/2024] [Revised: 07/10/2024] [Accepted: 07/22/2024] [Indexed: 07/30/2024]
Abstract
Water-soluble fluorescent chemosensors for lead ion are highly desirable in environmental detection and bioimagery. Based on a water-soluble pillar[5]arene WP5 and imidazolium terminal functionalized 2,2'-bibenzimidazole derivative BIHB, we report a host-guest charge transfer assembly BIHB-2WP5 for sensitive and selective detection of Pb2+ in pure aqueous media. As a result of its high electron-rich cavity, WP5 can bind electron-deficiency guest BIHB with various host/guest stoichiometry to easily tune the microtopography of assembly from nanoparticle to nanocube. In view of the good biocompatibility and sensitivity, the supramolecular assembly BIHB-2WP5 was used as a fluorescent probe for the detection of Pb2+ in living cells and a smartphone Pb2+ detection device was constructed for the in situ test.
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Affiliation(s)
- Hong Yao
- Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, PR China.
| | - Jin-Wang Wang
- Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, PR China
| | - Yan-Bing Niu
- Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, PR China
| | - Bao-Hong Yang
- Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, PR China
| | - Wen-Yu Cao
- Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, PR China
| | - Fei-Xiang Yang
- Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, PR China
| | - Shu-Ning Qin
- Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, PR China
| | - Tai-Bao Wei
- Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, PR China
| | - Qi Lin
- Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, PR China.
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Panagopoulou C, Skotadis E, Aslanidis E, Tzourmana G, Rapesi A, Tsioustas C, Kainourgiaki M, Kleitsiotis G, Tsekenis G, Tsoukalas D. Non-Faradaic Impedimetric Detection of Heavy Metal Ions via a Hybrid Nanoparticle-DNAzyme Biosensor. BIOSENSORS 2024; 14:321. [PMID: 39056597 PMCID: PMC11274724 DOI: 10.3390/bios14070321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 06/21/2024] [Accepted: 06/24/2024] [Indexed: 07/28/2024]
Abstract
Due to rapid industrialization, novel water-quality monitoring techniques for the detection of highly toxic and hazardous heavy metal ions are essential. Herein, a hybrid noble nanoparticle/DNAzyme electrochemical biosensor is proposed for the simultaneous and label-free detection of Pb2+ and Cr3+ in aqueous solutions. The sensor is based on the combination of a two-dimensional naked-platinum nanoparticle film and DNAzymes, whose double-helix configuration disassembles into smaller fragments in the presence of target-specific heavy metal ions. The electrochemical behavior of the fabricated sensor was investigated with non-faradaic electrochemical impedance spectroscopy (EIS), resulting in the successful detection of Pb2+ and Cr3+ well below their maximum permitted levels in tap water. So far, there has been no report on the successful detection of heavy metal ions utilizing the non-faradaic electrochemical impedance spectroscopy technique based on advanced nanomaterials paired with DNAzymes. This is also one of the few reports on the successful detection of chromium (III) via a sensor incorporating DNAzymes.
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Affiliation(s)
- Chrysi Panagopoulou
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (C.P.); or (E.A.); (G.T.); (A.R.); (C.T.); (M.K.); (G.K.); (D.T.)
| | - Evangelos Skotadis
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (C.P.); or (E.A.); (G.T.); (A.R.); (C.T.); (M.K.); (G.K.); (D.T.)
- Department of Biomedical Engineering, The University of West Attica, 12243 Athens, Greece
| | - Evangelos Aslanidis
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (C.P.); or (E.A.); (G.T.); (A.R.); (C.T.); (M.K.); (G.K.); (D.T.)
- Microelectronics Research Group (MRG), Institute of Electronic Structure and Laser (IESL), Foundation of Research & Technology Hellas (FORTH), 70013 Heraklion, Greece
| | - Georgia Tzourmana
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (C.P.); or (E.A.); (G.T.); (A.R.); (C.T.); (M.K.); (G.K.); (D.T.)
| | - Annita Rapesi
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (C.P.); or (E.A.); (G.T.); (A.R.); (C.T.); (M.K.); (G.K.); (D.T.)
| | - Charalampos Tsioustas
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (C.P.); or (E.A.); (G.T.); (A.R.); (C.T.); (M.K.); (G.K.); (D.T.)
| | - Maria Kainourgiaki
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (C.P.); or (E.A.); (G.T.); (A.R.); (C.T.); (M.K.); (G.K.); (D.T.)
| | - Georgios Kleitsiotis
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (C.P.); or (E.A.); (G.T.); (A.R.); (C.T.); (M.K.); (G.K.); (D.T.)
| | - George Tsekenis
- Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece;
| | - Dimitrios Tsoukalas
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (C.P.); or (E.A.); (G.T.); (A.R.); (C.T.); (M.K.); (G.K.); (D.T.)
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Helim R, Zazoua A, Jaffrezic-Renault N, Korri-Youssoufi H. Label free electrochemical sensors for Pb(II) detection based on hemicellulose extracted from Opuntia Ficus Indica cactus. Talanta 2023; 265:124784. [PMID: 37356191 DOI: 10.1016/j.talanta.2023.124784] [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: 10/19/2022] [Revised: 03/09/2023] [Accepted: 06/06/2023] [Indexed: 06/27/2023]
Abstract
We aim to develop an electrochemical sensor for a divalent metal ion (lead II), a highly toxic water contaminant. We explore a sensor formed with a hemicellulose polysaccharide extracted from the Opuntia Ficus Indica cactus associated with agarose as a sensitive layer deposited on a gold electrode. This sensor combines the functional groups of hemicellulose that could form a complex with metal ions and agarose with gelling properties to form a stable membrane. The sensor demonstrated a loading ability of Pb2+, with higher affinity compared to other metal ions such as Hg2+, Ni2+, and Cu2+, thanks to the chemical structure of hemicellulose. The detection was measured by square wave voltammetry based on a well-defined redox peak of the metal ions. The sensor shows high sensitivity towards Pb2+ with a detection limit of 1.3 fM. The application in river and sea water using the standard addition method for lead detection was studied.
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Affiliation(s)
- Rabiaa Helim
- University of Jijel, Laboratory of Applied Energetics and Materials, Jijel, 18000, Ouled Aissa, Algeria; Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), ECBB, 17 avenue des sciences, 91400, Orsay, France.
| | - Ali Zazoua
- University of Jijel, Laboratory of Applied Energetics and Materials, Jijel, 18000, Ouled Aissa, Algeria; ENP of Constantine, Laboratoire de Génie des Procédés pour le Développement Durable et les Produits de Santé, Constantine, 25000, Algeria.
| | | | - Hafsa Korri-Youssoufi
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), ECBB, 17 avenue des sciences, 91400, Orsay, France.
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4
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Chen J, Zhao J, Feng R, Ma H, Wang H, Ren X, Wei Q, Ju H. Competitive photoelectrochemical aptamer sensor based on a Z-scheme Fe 2O 3/g-C 3N 4 heterojunction for sensitive detection of lead ions. JOURNAL OF HAZARDOUS MATERIALS 2023; 459:132122. [PMID: 37499488 DOI: 10.1016/j.jhazmat.2023.132122] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/14/2023] [Accepted: 07/20/2023] [Indexed: 07/29/2023]
Abstract
Lead ion (Pb2+) is one of the heavy metal contaminants within the environment, which can seriously affect biological health. Thus, it is very important to detect lead ions, especially exceeding the standard concentration (100 ng/mL). In this work, we have developed a photoelectrochemical (PEC) aptamer sensor with Z-scheme Fe2O3/g-C3N4 heterojunction as a substrate material for sensitive detection of Pb2+. Specifically, Fe2O3/g-C3N4 is employed as a substrate with a powerful and stable photocurrent response. Au and DNA-1 connected to the substrate material via the Au-S bond and increased the electron conduction. Marking DNA-2 with ZnO effectively reduced the light absorption intensity resulting in a lower photocurrent response. Surprisingly, the Pb2+ PEC sensor showed good linearity in the detection range of 62 pg/mL to 1 μg/mL with a detection limit as low as 7.9 pg/mL (S/N = 3). The sensor showed stable recovery and low relative standard deviation in real sample detection. Additionally, the sensor exhibited excellent stability, selectivity, and reproducibility. The reproducibility of the electrodes was evaluated, and the accuracy of the individual electrode current values was calculated to range from 0.5% to 2.71% with an RSD of 1.74%. Such PEC sensor guarantees to supply a brand-new approach to the detection of Pb2+.
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Affiliation(s)
- Jingui Chen
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Jinxiu Zhao
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Rui Feng
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Hongmin Ma
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Huan Wang
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Xiang Ren
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
| | - Qin Wei
- Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China; Department of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, College of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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Wang S, Shang J, Zhao B, Wang H, Yang C, Liu X, Wang F. Integration of Isothermal Enzyme-Free Nucleic Acid Circuits for High-Performance Biosensing Applications. Chempluschem 2023; 88:e202300432. [PMID: 37706615 DOI: 10.1002/cplu.202300432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 09/10/2023] [Accepted: 09/11/2023] [Indexed: 09/15/2023]
Abstract
The isothermal enzyme-free nucleic acid amplification method plays an indispensable role in biosensing by virtue of its simple, robust, and highly efficient properties without the assistance of temperature cycling or/and enzymatic biocatalysis. Up to now, enzyme-free nucleic acid amplification has been extensively utilized for biological assays and has achieved the highly sensitive detection of various biological targets, including DNAs, RNAs, small molecules, proteins, and even cells. In this Review, the mechanisms of entropy-driven reaction, hybridization chain reaction, catalytic hairpin assembly and DNAzyme are concisely described and their recent application as biosensors is comprehensively summarized. Furthermore, the current problems and the developments of these DNA circuits are also discussed.
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Affiliation(s)
- Siyuan Wang
- College of Biological and Pharmaceutical Sciences, China Three Gorges University, 443002, Yichang, Hubei, P. R. China
| | - Jinhua Shang
- Research Institute of Shenzhen, Wuhan University, 518057, Shenzhen, Guangdong, P. R. China
- College of Chemistry and Molecular Sciences, Wuhan University, 430072, Wuhan, Hubei, P. R. China
| | - Bingyue Zhao
- College of Biological and Pharmaceutical Sciences, China Three Gorges University, 443002, Yichang, Hubei, P. R. China
| | - Huimin Wang
- College of Biological and Pharmaceutical Sciences, China Three Gorges University, 443002, Yichang, Hubei, P. R. China
| | - Changying Yang
- College of Biological and Pharmaceutical Sciences, China Three Gorges University, 443002, Yichang, Hubei, P. R. China
| | - Xiaoqing Liu
- Research Institute of Shenzhen, Wuhan University, 518057, Shenzhen, Guangdong, P. R. China
- College of Chemistry and Molecular Sciences, Wuhan University, 430072, Wuhan, Hubei, P. R. China
| | - Fuan Wang
- Research Institute of Shenzhen, Wuhan University, 518057, Shenzhen, Guangdong, P. R. China
- College of Chemistry and Molecular Sciences, Wuhan University, 430072, Wuhan, Hubei, P. R. China
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6
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Skotadis E, Aslanidis E, Tsekenis G, Panagopoulou C, Rapesi A, Tzourmana G, Kennou S, Ladas S, Zeniou A, Tsoukalas D. Hybrid Nanoparticle/DNAzyme Electrochemical Biosensor for the Detection of Divalent Heavy Metal Ions and Cr 3. SENSORS (BASEL, SWITZERLAND) 2023; 23:7818. [PMID: 37765875 PMCID: PMC10535422 DOI: 10.3390/s23187818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/30/2023] [Accepted: 09/10/2023] [Indexed: 09/29/2023]
Abstract
A hybrid noble nanoparticle/DNAzyme electrochemical biosensor is proposed for the detection of Pb2+, Cd2+, and Cr3+. The sensor takes advantage of a well-studied material that is known for its selective interaction with heavy metal ions (i.e., DNAzymes), which is combined with metallic nanoparticles. The double-helix structure of DNAzymes is known to dissociate into smaller fragments in the presence of specific heavy metal ions; this results in a measurable change in device resistance due to the collapse of conductive inter-nanoparticle DNAzyme bridging. The paper discusses the effect of DNAzyme anchoring groups (i.e., thiol and amino functionalization groups) on device performance and reports on the successful detection of all three target ions in concentrations that are well below their maximum permitted levels in tap water. While the use of DNAzymes for the detection of lead in particular and, to some extent, cadmium has been studied extensively, this is one of the few reports on the successful detection of chromium (III) via a sensor incorporating DNAzymes. The sensor showed great potential for its future integration in autonomous and remote sensing systems due to its low power characteristics, simple and cost-effective fabrication, and easy automation and measurement.
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Affiliation(s)
- Evangelos Skotadis
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (E.A.); (C.P.); (A.R.); (G.T.); (D.T.)
| | - Evangelos Aslanidis
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (E.A.); (C.P.); (A.R.); (G.T.); (D.T.)
| | - Georgios Tsekenis
- Biomedical Research Foundation, Academy of Athens, 4 Soranou Ephessiou Street, 11527 Athens, Greece;
| | - Chryssi Panagopoulou
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (E.A.); (C.P.); (A.R.); (G.T.); (D.T.)
| | - Annita Rapesi
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (E.A.); (C.P.); (A.R.); (G.T.); (D.T.)
| | - Georgia Tzourmana
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (E.A.); (C.P.); (A.R.); (G.T.); (D.T.)
| | - Stella Kennou
- Department of Chemical Engineering, University of Patras, 26504 Patras, Greece; (S.K.); (S.L.)
| | - Spyridon Ladas
- Department of Chemical Engineering, University of Patras, 26504 Patras, Greece; (S.K.); (S.L.)
| | - Angelos Zeniou
- Institute of Nanoscience and Nanotechnology, NCSR Demokritos, Aghia Paraskevi, 15310 Attiki, Greece;
| | - Dimitris Tsoukalas
- Department of Applied Physics, National Technical University of Athens, 15780 Athens, Greece; (E.A.); (C.P.); (A.R.); (G.T.); (D.T.)
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Liang G, Song L, Gao Y, Wu K, Guo R, Chen R, Zhen J, Pan L. Aptamer Sensors for the Detection of Antibiotic Residues- A Mini-Review. TOXICS 2023; 11:513. [PMID: 37368613 DOI: 10.3390/toxics11060513] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/20/2023] [Accepted: 05/29/2023] [Indexed: 06/29/2023]
Abstract
Food security is a global issue, since it is closely related to human health. Antibiotics play a significant role in animal husbandry owing to their desirable broad-spectrum antibacterial activity. However, irrational use of antibiotics has caused serious environmental pollution and food safety problems; thus, the on-site detection of antibiotics is in high demand in environmental analysis and food safety assessment. Aptamer-based sensors are simple to use, accurate, inexpensive, selective, and are suitable for detecting antibiotics for environmental and food safety analysis. This review summarizes the recent advances in aptamer-based electrochemical, fluorescent, and colorimetric sensors for antibiotics detection. The review focuses on the detection principles of different aptamer sensors and recent achievements in developing electrochemical, fluorescent, and colorimetric aptamer sensors. The advantages and disadvantages of different sensors, current challenges, and future trends of aptamer-based sensors are also discussed.
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Affiliation(s)
- Gang Liang
- Institute of Quality Standard and Testing Technology, BAAFS (Beijing Academy of Agriculture and Forestry Sciences), Beijing 100097, China
| | - Le Song
- Institute of Quality Standard and Testing Technology, BAAFS (Beijing Academy of Agriculture and Forestry Sciences), Beijing 100097, China
| | - Yufei Gao
- College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050024, China
| | - Kailong Wu
- Ulanqab Agricultural and Livestock Product Quality Safety Center, Ulanqab 012406, China
| | - Rui Guo
- Datong Comprehensive Inspection and Testing Center, Datong 037000, China
| | - Ruichun Chen
- Shijiazhuang Customs Technology Center, Shijiazhuang 050051, China
| | - Jianhui Zhen
- Shijiazhuang Customs Technology Center, Shijiazhuang 050051, China
| | - Ligang Pan
- Institute of Quality Standard and Testing Technology, BAAFS (Beijing Academy of Agriculture and Forestry Sciences), Beijing 100097, China
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Zhang Y, Liao Y, Yin X, Zhang Y, Yang Z, Wang H, Yang W, Pang P. Electrochemical determination of Pb2+ based on DNAzyme-triggered rolling circle amplification and DNA-templated silver nanoclusters amplification strategy. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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9
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Chang Y, Wang Y, Zhang J, Xing Y, Li G, Deng D, Liu L. Overview on the Design of Magnetically Assisted Electrochemical Biosensors. BIOSENSORS 2022; 12:bios12110954. [PMID: 36354462 PMCID: PMC9687741 DOI: 10.3390/bios12110954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 10/27/2022] [Accepted: 10/29/2022] [Indexed: 06/12/2023]
Abstract
Electrochemical biosensors generally require the immobilization of recognition elements or capture probes on the electrode surface. This may limit their practical applications due to the complex operation procedure and low repeatability and stability. Magnetically assisted biosensors show remarkable advantages in separation and pre-concentration of targets from complex biological samples. More importantly, magnetically assisted sensing systems show high throughput since the magnetic materials can be produced and preserved on a large scale. In this work, we summarized the design of electrochemical biosensors involving magnetic materials as the platforms for recognition reaction and target conversion. The recognition reactions usually include antigen-antibody, DNA hybridization, and aptamer-target interactions. By conjugating an electroactive probe to biomolecules attached to magnetic materials, the complexes can be accumulated near to an electrode surface with the aid of external magnet field, producing an easily measurable redox current. The redox current can be further enhanced by enzymes, nanomaterials, DNA assemblies, and thermal-cycle or isothermal amplification. In magnetically assisted assays, the magnetic substrates are removed by a magnet after the target conversion, and the signal can be monitored through stimuli-response release of signal reporters, enzymatic production of electroactive species, or target-induced generation of messenger DNA.
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Affiliation(s)
| | | | | | | | | | | | - Lin Liu
- Correspondence: (D.D.); (L.L.)
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10
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Cui Y, Wang R, Brady B, Wang X. Fully inkjet-printed paper-based Pb 2+ optodes for water analysis without interference from the chloramine disinfectant. Anal Bioanal Chem 2022; 414:7585-7595. [PMID: 35997814 DOI: 10.1007/s00216-022-04286-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/08/2022] [Accepted: 08/12/2022] [Indexed: 12/29/2022]
Abstract
We developed a paper-based colorimetric sensor for facile and cost-effective detection of Pb2+ in drinking and environmental water samples. The Pb2+ ion-selective optodes are fabricated by inkjet printing of ionophore, chromoionophore, and ion exchanger on cellulose paper. Pb2+ in water samples induces deprotonation of the pH chromoionophore and changes the optode color, which is acquired and analyzed by a smartphone. The paper-based optode without any plasticizer or polymer has a dynamic range and selectivity comparable to those of traditional optodes using PVC polymer and/or plasticizer. Furthermore, the response time of the plasticizer/polymer-free paper-based optode is much shorter than those of plasticized PVC-based optodes on paper and glass (5 min vs. 15 and 50 min). Moreover, the plasticizer/polymer-free optode preserves the water-wicking capability of porous cellulose paper, allowing for the design of pump-free microfluidic devices. Chloramine, a widely used disinfectant in drinking water, was found to be a strong and generic interference species for heavy metal ion detection via ion-selective optodes. A fully inkjet-printed lateral-flow paper-based device consisting of a sodium thiosulfate-based chloramine elimination zone and a plasticizer/polymer-free sensing zone was designed for Pb2+ detection in tap water disinfected by chloramine. The dynamic range of the Pb2+ sensor may be shifted from the current 10-6 to 10-5 M to lower concentrations by using stronger ionophores, but this work lays a foundation for the design of paper-based heavy metal ion sensors without detrimental interference from disinfectants.
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Affiliation(s)
- Yu Cui
- Institute for Smart Materials & Engineering, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong, 250022, People's Republic of China
| | - Renjie Wang
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA, 23284, USA.
| | - Brock Brady
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA, 23284, USA
| | - Xuewei Wang
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA, 23284, USA.
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Zhao L, Ahmed F, Zeng Y, Xu W, Xiong H. Recent Developments in G-Quadruplex Binding Ligands and Specific Beacons on Smart Fluorescent Sensor for Targeting Metal Ions and Biological Analytes. ACS Sens 2022; 7:2833-2856. [PMID: 36112358 DOI: 10.1021/acssensors.2c00992] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The G-quadruplex structure is crucial in several biological processes, including DNA replication, transcription, and genomic maintenance. G-quadruplex-based fluorescent probes have recently gained popularity because of their ease of use, low cost, excellent selectivity, and sensitivity. This review summarizes the latest applications of G-quadruplex structures as detectors of genome-wide, enantioselective catalysts, disease therapeutics, promising drug targets, and smart fluorescence probes. In every section, sensing of G-quadruplex and employing G4 for the detection of other analytes were introduced, respectively. Since the discovery of the G-quadruplex structure, several studies have been conducted to investigate its conformations, biological potential, stability, reactivity, selectivity for chemical modification, and optical properties. The formation mechanism and advancements for detecting different metal ions (Na+, K+, Ag+, Tl+, Cu+/Cu2+, Hg2+, and Pb2+) and biomolecules (AMP, ATP, DNA/RNA, microRNA, thrombin, T4 PNK, RNase H, ALP, CEA, lipocalin 1, and UDG) using fluorescent sensors based on G-quadruplex modification, such as dye labels, artificial nucleobase moieties, dye complexes, intercalating dyes, and bioconjugated nanomaterials (AgNCs, GO, QDs, CDs, and MOF) is described herein. To investigate these extremely efficient responsive agents for diagnostic and therapeutic applications in medicine, fluorescence sensors based on G-quadruplexes have also been employed as a quantitative visualization technique.
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Affiliation(s)
- Long Zhao
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China.,College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Farid Ahmed
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Yating Zeng
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Weiqing Xu
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Hai Xiong
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
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12
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Ding W, Miao Q, Bao X, Wang S, Lu J, Lyu M, Wang S. On-site detection of fish furunculosis by combining DNAzyme and carboxyl-functionalized graphene. Front Chem 2022; 10:1015827. [DOI: 10.3389/fchem.2022.1015827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 08/23/2022] [Indexed: 11/13/2022] Open
Abstract
Furunculosis, which is caused by Aeromonas salmonicida, can induce septicemia, leading to the rapid death of fishes belonging to Salmonidae, Cyprinidae, and Fuscheridae, and lamprey. Targeting A. salmonicida, five DNAzyme sequences with the highest enrichment rates were selected through the Systematic Evolution of Ligands by Exponential Enrichment (SELEX). The enrichment rates were 34.78, 23.60, 8.91, 2.89, and 2.34%, respectively. The DNAzyme with the highest activity, named D-AS-2, showed specificity and sensitivity. D-AS-2 was combined with carboxyl-functionalized graphene to construct a biosensor, which showed good fluorescence response to scabies lesion samples. The diagnostic procedure was completed in <2 min and can be used for the on-site diagnosis of fish diseases. A low-cost, rapid, simple, and highly specific biosensor for the diagnosis of furunculosis was established based on DNAzyme and carboxyl-functionalized graphene.
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13
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Wang J, Liu Z, Li Y, Yang C, Ma X, Li H, Sun C. Signal-on fluorescent sensing strategy for Pb 2+ detection based on 8-17 DNAzyme-mediated molecular beacon-type catalytic hairpin assembly circuit. Anal Bioanal Chem 2022; 414:6581-6590. [PMID: 35831535 DOI: 10.1007/s00216-022-04218-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 06/26/2022] [Accepted: 06/30/2022] [Indexed: 11/26/2022]
Abstract
Based on a Pb2+-specific 8-17 DNAzyme-induced catalytic hairpin assembly (CHA), a simple signal-on fluorescence strategy for lead ion detection was established. 8-17 DNAzyme was used as the recognition element of Pb2+, which catalyzed the cleavage of the RNA base embedded in the DNA substrate strand, while releasing part of the substrate strand (S') as CHA initiator. And two hairpin probes (H1 and H2-FQ) were designed according to the sequence of S' for CHA, in which H2-FQ was labeled with the fluorophore FAM and quencher BHQ-1 as fluorescent "molecular switch" based on fluorescence resonance energy transfer (FRET). In the presence of Pb2+, the CHA reaction was triggered to form a large number of H1-H2 complexes, enabling enzyme-free isothermal amplification and a signal-on fluorescence strategy. In the concentration range of 0.5-1000 nM, the fluorescence signal increases with the increase of Pb2+ concentration. The quantitative detection limit of Pb2+ by this method is 0.5 nM, which has better detection performance compared with the FQ-labeled 8-17 DNAzyme method. The established biosensor exhibits good specificity and can be effectively used for the detection of Pb2+ in real samples of river water and grass carp. Through ingenious nucleic acid sequence design, DNAzyme and CHA reactions are integrated to realize the enzyme-free isothermal amplifications and sensitive detection of Pb2+, which holds potential versatility in food supervision and environmental monitoring.
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Affiliation(s)
- Junyang Wang
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Zheng Liu
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Ying Li
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Chuanyu Yang
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Xinyue Ma
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Hongxia Li
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun, 130062, China.
- Chongqing Research Institute, Jilin University, Changchun, People's Republic of China.
| | - Chunyan Sun
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun, 130062, China.
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14
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Liu Y, Deng Y, Li S, Wang-Ngai Chow F, Liu M, He N. Monitoring and detection of antibiotic residues in animal derived foods: Solutions using aptamers. Trends Food Sci Technol 2022. [DOI: 10.1016/j.tifs.2022.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Fluorescent chemosensors containing ruthenium(II) bipyridine as fluorogenic unit and modified calixarene as ionophore: Synthesis, characterization, electrochemistry and ion-binding property. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Hua Y, Ma J, Li D, Wang R. DNA-Based Biosensors for the Biochemical Analysis: A Review. BIOSENSORS 2022; 12:bios12030183. [PMID: 35323453 PMCID: PMC8945906 DOI: 10.3390/bios12030183] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/09/2022] [Accepted: 03/16/2022] [Indexed: 05/21/2023]
Abstract
In recent years, DNA-based biosensors have shown great potential as the candidate of the next generation biomedical detection device due to their robust chemical properties and customizable biosensing functions. Compared with the conventional biosensors, the DNA-based biosensors have advantages such as wider detection targets, more durable lifetime, and lower production cost. Additionally, the ingenious DNA structures can control the signal conduction near the biosensor surface, which could significantly improve the performance of biosensors. In order to show a big picture of the DNA biosensor's advantages, this article reviews the background knowledge and recent advances of DNA-based biosensors, including the functional DNA strands-based biosensors, DNA hybridization-based biosensors, and DNA templated biosensors. Then, the challenges and future directions of DNA-based biosensors are discussed and proposed.
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Abstract
The continuously rising interest in chemical sensors’ applications in environmental monitoring, for soil analysis in particular, is owed to the sufficient sensitivity and selectivity of these analytical devices, their low costs, their simple measurement setups, and the possibility to perform online and in-field analyses with them. In this review the recent advances in chemical sensors for soil analysis are summarized. The working principles of chemical sensors involved in soil analysis; their benefits and drawbacks; and select applications of both the single selective sensors and multisensor systems for assessments of main plant nutrition components, pollutants, and other important soil parameters (pH, moisture content, salinity, exhaled gases, etc.) of the past two decades with a focus on the last 5 years (from 2017 to 2021) are overviewed.
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18
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Duan N, Li C, Song M, Wang Z, Zhu C, Wu S. Signal amplification of SiO 2 nanoparticle loaded horseradish peroxidase for colorimetric detection of lead ions in water. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 265:120342. [PMID: 34492513 DOI: 10.1016/j.saa.2021.120342] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 08/06/2021] [Accepted: 08/26/2021] [Indexed: 06/13/2023]
Abstract
In this work, we developed an aptamer-based optical assay for the analysis of Pb2+, a hazardous heavy metal that may be present in the food chain and harmful to human health. An aptamer targeted against Pb2+ was immobilized onto the microplate as the capture probe. SiO2 nanoparticles (NPs) were synthesized and used as carriers of the signaling horseradish peroxidase (HRP) to achieve amplification of the optical signal. Complementary DNA (cDNA) of the aptamer was also linked to the above mentioned SiO2 nanoparticle (NPs) as the signal probe. The aptamers were found to be able to capture Pb2+, and the unbound aptamers were subsequently hybridized with cDNA-HRP-SiO2 conjugates. As a result, the addition of TMB-H2O2 promoted the formation of blue products in the catalytic system. The assay adopting SiO2 NPs as an enhancer resulted in higher sensitivity with an LOD of 2.5 nM compared to normal procedures. The feasibility of the aptamer-based colorimetric assay was verified by successful detection of Pb2+ in water samples with recoveries in the range of 97.4-103.52%.
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Affiliation(s)
- Nuo Duan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Changxin Li
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Mingqian Song
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Zhouping Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Changqing Zhu
- School of Food Science, Nanjing Xiaozhuang University, Nanjing 211171, China.
| | - Shijia Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.
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19
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Digital E. coli Counter: A Microfluidics and Computer Vision-Based DNAzyme Method for the Isolation and Specific Detection of E. coli from Water Samples. BIOSENSORS 2022; 12:bios12010034. [PMID: 35049662 PMCID: PMC8773571 DOI: 10.3390/bios12010034] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/23/2021] [Accepted: 12/31/2021] [Indexed: 12/29/2022]
Abstract
Biological water contamination detection-based assays are essential to test water quality; however, these assays are prone to false-positive results and inaccuracies, are time-consuming, and use complicated procedures to test large water samples. Herein, we show a simple detection and counting method for E. coli in the water samples involving a combination of DNAzyme sensor, microfluidics, and computer vision strategies. We first isolated E. coli into individual droplets containing a DNAzyme mixture using droplet microfluidics. Upon bacterial cell lysis by heating, the DNAzyme mixture reacted with a particular substrate present in the crude intracellular material (CIM) of E. coli. This event triggers the dissociation of the fluorophore-quencher pair present in the DNAzyme mixture leading to a fluorescence signal, indicating the presence of E. coli in the droplets. We developed an algorithm using computer vision to analyze the fluorescent droplets containing E. coli in the presence of non-fluorescent droplets. The algorithm can detect and count fluorescent droplets representing the number of E. coli present in the sample. Finally, we show that the developed method is highly specific to detect and count E. coli in the presence of other bacteria present in the water sample.
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20
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Liu Y, Qiu R, Zhang Z, Chen D, Gao Y, Liu Z, Li H, Wang C. Label-free electrochemical biosensor based on GR5 DNAzyme/Ti3C2Tx Mxenes for Pb2+ detection. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2021.115979] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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21
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DNAzyme-Amplified Electrochemical Biosensor Coupled with pH Meter for Ca 2+ Determination at Variable pH Environments. NANOMATERIALS 2021; 12:nano12010004. [PMID: 35009954 PMCID: PMC8746961 DOI: 10.3390/nano12010004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/08/2021] [Accepted: 12/14/2021] [Indexed: 02/07/2023]
Abstract
For more than 50% of multiparous cows, it is difficult to adapt to the sudden increase in calcium demand for milk production, which is highly likely to cause hypocalcemia. An electrochemical biosensor is a portable and efficient method to sense Ca2+ concentrations, but biomaterial is easily affected by the pH of the analyte solution. Here, an electrochemical biosensor was fabricated using a glassy carbon electrode (GCE) and single-walled carbon nanotube (SWNT), which amplified the impedance signal by changing the structure and length of the DNAzyme. Aiming at the interference of the pH, the electrochemical biosensor (GCE/SWNT/DNAzyme) was coupled with a pH meter to form an electrochemical device. It was used to collect data at different Ca2+ concentrations and pH values, and then was processed using different mathematical models, of which GPR showed higher detecting accuracy. After optimizing the detecting parameters, the electrochemical device could determine the Ca2+ concentration ranging from 5 μM to 25 mM, with a detection limit of 4.2 μM at pH values ranging from 4.0 to 7.5. Finally, the electrochemical device was used to determine the Ca2+ concentrations in different blood and milk samples, which can overcome the influence of the pH.
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22
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Wang M, Zhao L, Wen Y, Wu Y, Li Y. Label-Free Fluorescent Determination of Simian Virus 40 Using Triplex DNA and G-Quadruplex/N-Methyl Mesoporphyrin IX. ANAL LETT 2021. [DOI: 10.1080/00032719.2021.1907394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Minting Wang
- Faculty of Chemistry & Environmental Science, Guangdong Ocean University, Zhanjiang, China
| | - Liting Zhao
- Faculty of Chemistry & Environmental Science, Guangdong Ocean University, Zhanjiang, China
| | - Yanmei Wen
- Faculty of Chemistry & Environmental Science, Guangdong Ocean University, Zhanjiang, China
| | - Yulian Wu
- Faculty of Chemistry & Environmental Science, Guangdong Ocean University, Zhanjiang, China
| | - Yubin Li
- Faculty of Chemistry & Environmental Science, Guangdong Ocean University, Zhanjiang, China
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23
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Biosensors and biopolymer-based nanocomposites for smart food packaging: Challenges and opportunities. Food Packag Shelf Life 2021. [DOI: 10.1016/j.fpsl.2021.100745] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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24
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Chen Y, Wu H, Qian S, Yu X, Chen H, Wu J. Applying CRISPR/Cas system as a signal enhancer for DNAzyme-based lead ion detection. Anal Chim Acta 2021; 1192:339356. [DOI: 10.1016/j.aca.2021.339356] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/01/2021] [Accepted: 12/02/2021] [Indexed: 12/26/2022]
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25
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Falina S, Syamsul M, Rhaffor NA, Sal Hamid S, Mohamed Zain KA, Abd Manaf A, Kawarada H. Ten Years Progress of Electrical Detection of Heavy Metal Ions (HMIs) Using Various Field-Effect Transistor (FET) Nanosensors: A Review. BIOSENSORS 2021; 11:478. [PMID: 34940235 PMCID: PMC8699440 DOI: 10.3390/bios11120478] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/13/2021] [Accepted: 11/17/2021] [Indexed: 05/16/2023]
Abstract
Heavy metal pollution remains a major concern for the public today, in line with the growing population and global industrialization. Heavy metal ion (HMI) is a threat to human and environmental safety, even at low concentrations, thus rapid and continuous HMI monitoring is essential. Among the sensors available for HMI detection, the field-effect transistor (FET) sensor demonstrates promising potential for fast and real-time detection. The aim of this review is to provide a condensed overview of the contribution of certain semiconductor substrates in the development of chemical and biosensor FETs for HMI detection in the past decade. A brief introduction of the FET sensor along with its construction and configuration is presented in the first part of this review. Subsequently, the FET sensor deployment issue and FET intrinsic limitation screening effect are also discussed, and the solutions to overcome these shortcomings are summarized. Later, we summarize the strategies for HMIs' electrical detection, mechanisms, and sensing performance on nanomaterial semiconductor FET transducers, including silicon, carbon nanotubes, graphene, AlGaN/GaN, transition metal dichalcogenides (TMD), black phosphorus, organic and inorganic semiconductor. Finally, concerns and suggestions regarding detection in the real samples using FET sensors are highlighted in the conclusion.
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Affiliation(s)
- Shaili Falina
- Collaborative Microelectronic Design Excellence Center (CEDEC), Universiti Sains Malaysia, Sains@USM, Bayan Lepas 11900, Pulau Pinang, Malaysia; (S.F.); (N.A.R.); (S.S.H.); (K.A.M.Z.)
- Faculty of Science and Engineering, Waseda University, Tokyo 169-8555, Japan;
| | - Mohd Syamsul
- Faculty of Science and Engineering, Waseda University, Tokyo 169-8555, Japan;
- Institute of Nano Optoelectronics Research and Technology (INOR), Universiti Sains Malaysia, Sains@USM, Bayan Lepas 11900, Pulau Pinang, Malaysia
| | - Nuha Abd Rhaffor
- Collaborative Microelectronic Design Excellence Center (CEDEC), Universiti Sains Malaysia, Sains@USM, Bayan Lepas 11900, Pulau Pinang, Malaysia; (S.F.); (N.A.R.); (S.S.H.); (K.A.M.Z.)
| | - Sofiyah Sal Hamid
- Collaborative Microelectronic Design Excellence Center (CEDEC), Universiti Sains Malaysia, Sains@USM, Bayan Lepas 11900, Pulau Pinang, Malaysia; (S.F.); (N.A.R.); (S.S.H.); (K.A.M.Z.)
| | - Khairu Anuar Mohamed Zain
- Collaborative Microelectronic Design Excellence Center (CEDEC), Universiti Sains Malaysia, Sains@USM, Bayan Lepas 11900, Pulau Pinang, Malaysia; (S.F.); (N.A.R.); (S.S.H.); (K.A.M.Z.)
| | - Asrulnizam Abd Manaf
- Collaborative Microelectronic Design Excellence Center (CEDEC), Universiti Sains Malaysia, Sains@USM, Bayan Lepas 11900, Pulau Pinang, Malaysia; (S.F.); (N.A.R.); (S.S.H.); (K.A.M.Z.)
| | - Hiroshi Kawarada
- Faculty of Science and Engineering, Waseda University, Tokyo 169-8555, Japan;
- The Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku, Tokyo 169-0051, Japan
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26
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Khan S, Burciu B, Filipe CDM, Li Y, Dellinger K, Didar TF. DNAzyme-Based Biosensors: Immobilization Strategies, Applications, and Future Prospective. ACS NANO 2021; 15:13943-13969. [PMID: 34524790 DOI: 10.1021/acsnano.1c04327] [Citation(s) in RCA: 104] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Since their discovery almost three decades ago, DNAzymes have been used extensively in biosensing. Depending on the type of DNAzyme being used, these functional oligonucleotides can act as molecular recognition elements within biosensors, offering high specificity to their target analyte, or as reporters capable of transducing a detectable signal. Several parameters need to be considered when designing a DNAzyme-based biosensor. In particular, given that many of these biosensors immobilize DNAzymes onto a sensing surface, selecting an appropriate immobilization strategy is vital. Suboptimal immobilization can result in both DNAzyme detachment and poor accessibility toward the target, leading to low sensing accuracy and sensitivity. Various approaches have been employed for DNAzyme immobilization within biosensors, ranging from amine and thiol-based covalent attachment to non-covalent strategies involving biotin-streptavidin interactions, DNA hybridization, electrostatic interactions, and physical entrapment. While the properties of each strategy inform its applicability within a proposed sensor, the selection of an appropriate strategy is largely dependent on the desired application. This is especially true given the diverse use of DNAzyme-based biosensors for the detection of pathogens, metal ions, and clinical biomarkers. In an effort to make the development of such sensors easier to navigate, this paper provides a comprehensive review of existing immobilization strategies, with a focus on their respective advantages, drawbacks, and optimal conditions for use. Next, common applications of existing DNAzyme-based biosensors are discussed. Last, emerging and future trends in the development of DNAzyme-based biosensors are discussed, and gaps in existing research worthy of exploration are identified.
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Affiliation(s)
- Shadman Khan
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Brenda Burciu
- Department of Nanoengineering, Joint School of Nanoscience and Nanoengineering, North Carolina A&T State University, 2907 East Gate City Boulevard, Greensboro, North Carolina 27401, United States
| | - Carlos D M Filipe
- Department of Chemical Engineering, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Yingfu Li
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada
| | - Kristen Dellinger
- Department of Nanoengineering, Joint School of Nanoscience and Nanoengineering, North Carolina A&T State University, 2907 East Gate City Boulevard, Greensboro, North Carolina 27401, United States
| | - Tohid F Didar
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
- Department of Mechanical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
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27
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RNA-cleaving DNAzymes as a diagnostic and therapeutic agent against antimicrobial resistant bacteria. Curr Genet 2021; 68:27-38. [PMID: 34505182 DOI: 10.1007/s00294-021-01212-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 08/12/2021] [Accepted: 09/02/2021] [Indexed: 10/20/2022]
Abstract
The development of nucleic-acid-based antimicrobials such as RNA-cleaving DNAzyme (RCD), a short catalytically active nucleic acid, is a promising alternative to the current antibiotics. The current rapid spread of antimicrobial resistance (AMR) in bacteria renders some antibiotics useless against bacterial infection, thus creating the need for alternative antimicrobials such as DNAzymes. This review summarizes recent advances in the use of RCD as a diagnostic and therapeutic agent against AMR. Firstly, the recent diagnostic application of RCD for the detection of bacterial cells and the associated resistant gene(s) is discussed. The next section summarises the therapeutic application of RCD in AMR bacterial infections which includes direct targeting of the resistant genes and indirect targeting of AMR-associated genes. Finally, this review extends the discussion to challenges of utilizing RCD in real-life applications, and the potential of combining both diagnostic and therapeutic applications of RCD into a single agent as a theranostic agent.
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Abstract
This article provides a comprehensive review of biosensing with DNAzymes, providing an overview of different sensing applications while highlighting major progress and seminal contributions to the field of portable biosensor devices and point-of-care diagnostics. Specifically, the field of functional nucleic acids is introduced, with a specific focus on DNAzymes. The incorporation of DNAzymes into bioassays is then described, followed by a detailed overview of recent advances in the development of in vivo sensing platforms and portable sensors incorporating DNAzymes for molecular recognition. Finally, a critical perspective on the field, and a summary of where DNAzyme-based devices may make the biggest impact are provided.
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Affiliation(s)
- Erin M McConnell
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario L8S 4K1, Canada.
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29
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Xie X, Pan M, Hong L, Liu K, Yang J, Wang S, Wang S. An "Off-On" Rhodamine 6G Hydrazide-Based Output Platform for Fluorescence and Visual Dual-Mode Detection of Lead(II). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:7209-7217. [PMID: 34133167 DOI: 10.1021/acs.jafc.1c02568] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, the rhodamine 6G hydrazide (R6GH) complex was synthesized to develop an "off-on" output platform for fluorescence and visual dual-mode analysis of lead(II) (Pb2+). The prepared R6GH complex using the heat to reflux reaction of rhodamine 6G (R6G) and hydrazine hydrate was characterized through FT-IR, MS, 1H NMR, and 13C NMR and demonstrated to have good fluorescence stability and reversibility. The microenvironment for Pb2+ detection has been optimized in detail. Under the optimal conditions, the "off-on" R6GH-based fluorescence output platform showed a good response to Pb2+ in the concentration range of 0.05-6.0 μM (R2 = 0.9851) with a limit of detection (LOD) of 0.02 μM. Furthermore, at three spiked Pb2+ levels in the selected agricultural (tap water, soil) and food (fish, shrimp) samples, the developed R6GH-based fluorescence assays obtained a significant recovery range of 84.0-102.0% (RSD < 5.0%, n = 3), which had a good correlation with the results from ICP-MS (R2 = 0.9915). The developed R6GH immobilized paper-based array sensor can reach the lower LOD (2.5 μM) for Pb2+ through the naked eye. By combining with LAB analysis, a good linear response was obtained in the Pb2+ concentration range of 1.0-50.0 μM. These results indicated that the developed R6GH probe had great application potential in accurate detection of fluorescence and rapid visual and semiquantitative screening for Pb2+.
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Affiliation(s)
- Xiaoqian Xie
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Mingfei Pan
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Liping Hong
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Kaixin Liu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Jingying Yang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Shan Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Shuo Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China
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30
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Chakraborty A, Ravi SP, Shamiya Y, Cui C, Paul A. Harnessing the physicochemical properties of DNA as a multifunctional biomaterial for biomedical and other applications. Chem Soc Rev 2021; 50:7779-7819. [PMID: 34036968 DOI: 10.1039/d0cs01387k] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The biological purpose of DNA is to store, replicate, and convey genetic information in cells. Progress in molecular genetics have led to its widespread applications in gene editing, gene therapy, and forensic science. However, in addition to its role as a genetic material, DNA has also emerged as a nongenetic, generic material for diverse biomedical applications. DNA is essentially a natural biopolymer that can be precisely programed by simple chemical modifications to construct materials with desired mechanical, biological, and structural properties. This review critically deciphers the chemical tools and strategies that are currently being employed to harness the nongenetic functions of DNA. Here, the primary product of interest has been crosslinked, hydrated polymers, or hydrogels. State-of-the-art applications of macroscopic, DNA-based hydrogels in the fields of environment, electrochemistry, biologics delivery, and regenerative therapy have been extensively reviewed. Additionally, the review encompasses the status of DNA as a clinically and commercially viable material and provides insight into future possibilities.
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Affiliation(s)
- Aishik Chakraborty
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada.
| | - Shruthi Polla Ravi
- School of Biomedical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada
| | - Yasmeen Shamiya
- Department of Chemistry, The University of Western Ontario, London, ON N6A 5B9, Canada
| | - Caroline Cui
- Department of Chemistry, The University of Western Ontario, London, ON N6A 5B9, Canada
| | - Arghya Paul
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada. and School of Biomedical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada and Department of Chemistry, The University of Western Ontario, London, ON N6A 5B9, Canada
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Singh H, Bamrah A, Bhardwaj SK, Deep A, Khatri M, Kim KH, Bhardwaj N. Nanomaterial-based fluorescent sensors for the detection of lead ions. JOURNAL OF HAZARDOUS MATERIALS 2021; 407:124379. [PMID: 33309138 DOI: 10.1016/j.jhazmat.2020.124379] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 10/22/2020] [Accepted: 10/23/2020] [Indexed: 06/12/2023]
Abstract
Lead (Pb) poisoning has been a scourge to the human to pose sighnificant health risks (e.g., organ disorders, carcinogenicity, and genotoxicity) as observed from many different parts of the world, especially in developing countries. The demand for accurate sensors for its detection, especially in environmental media (soil, water, food, etc.) has hence been growing steadily over the years. The potential utility of fluorescent nanosensors as an important analytical tool is recognized due to their astonishing characteristics (e.g., high sensitivity/selectivity, enhanced detection performance, low cost, portability, and rapid on-site detection ability). This review is organized to offer insight into the recent developments in fluorescent nanosensing technology for the detection of lead ions (Pb2+). To this end, different types of nanomaterials explored for such applications have been classified and evaluated with respect to performance, especially in terms of sensitivity. This review will help researchers gain a better knowledge on the status and importance of optical nanosensors so as to remediate the contamination of lead and associated problems. The technical challenges and prospects in the development of nanosensing systems for Pb2+ are also discussed.
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Affiliation(s)
- Harpreet Singh
- Department of Biotechnology, University Institute of Engineering Technology (UIET), Panjab University, Chandigarh, India
| | - Amy Bamrah
- Department of Biotechnology, University Institute of Engineering Technology (UIET), Panjab University, Chandigarh, India
| | - Sanjeev K Bhardwaj
- Department of Nanomaterials and Application Technology, Center of Innovative and Applied Bioprocessing, Sector 81 (Knowledge City), S.A.S. Nagar, 140306 Punjab, India
| | - Akash Deep
- Central Scientific Instruments Organization, Sector 30C, Chandigarh 160030, India
| | - Madhu Khatri
- Department of Biotechnology, University Institute of Engineering Technology (UIET), Panjab University, Chandigarh, India
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
| | - Neha Bhardwaj
- Department of Biotechnology, University Institute of Engineering Technology (UIET), Panjab University, Chandigarh, India.
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Nishio M, Tsukakoshi K, Ikebukuro K. G-quadruplex: Flexible conformational changes by cations, pH, crowding and its applications to biosensing. Biosens Bioelectron 2021; 178:113030. [PMID: 33524709 DOI: 10.1016/j.bios.2021.113030] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 01/07/2021] [Accepted: 01/20/2021] [Indexed: 12/20/2022]
Abstract
G-quadruplex (G4) is a non-canonical structure that is formed in G-rich sequences of nucleic acids. G4s play important roles in vivo, such as telomere maintenance, transcription, and DNA replication. There are three typical topologies of G4: parallel, anti-parallel, and hybrid. In general, metal cations, such as potassium and sodium, stabilize G4s through coordination in the G-quartet. While G4s have some functions in vivo, there are many reports of developed applications that use G4s. As various conformations of G4s could form from one sequence depending on varying conditions, many researchers have developed G4-based sensors. Furthermore, G4 is a great scaffold of aptamers since many aptamers folded into G4s have also been reported. However, there are some challenges about its practical use due to the difference between practical sample conditions and experimental ones. G4 conformations are dramatically altered by the surrounding conditions, such as metal cations, pH, and crowding. Many studies have been conducted to characterize G4 conformations under various conditions, not only to use G4s in practical applications but also to reveal its function in vivo. In this review, we summarize recent studies that have investigated the effects of surrounding conditions (e.g., metal cations, pH, and crowding) on G4 conformations and the application of G4s mainly in biosensor fields, and in others.
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Affiliation(s)
- Maui Nishio
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo, 184-8588, Japan
| | - Kaori Tsukakoshi
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo, 184-8588, Japan
| | - Kazunori Ikebukuro
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo, 184-8588, Japan.
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Yang Y, Li W, Liu J. Review of recent progress on DNA-based biosensors for Pb 2+ detection. Anal Chim Acta 2020; 1147:124-143. [PMID: 33485571 DOI: 10.1016/j.aca.2020.12.056] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 12/12/2020] [Accepted: 12/25/2020] [Indexed: 02/08/2023]
Abstract
Lead (Pb) is a highly toxic heavy metal of great environmental and health concerns, and interestingly Pb2+ has played important roles in nucleic acids chemistry. Since 2000, using DNA for selective detection of Pb2+ has become a rapidly growing topic in the analytical community. Pb2+ can serve as the most active cofactor for RNA-cleaving DNAzymes including the GR5, 17E and 8-17 DNAzymes. Recently, Pb2+ was found to promote a porphyrin metalation DNAzyme named T30695. In addition, Pb2+ can tightly bind to various G-quadruplex sequences inducing their unique folding and binding to other molecules such as dyes and hemin. The peroxidase-like activity of G-quadruplex/hemin complexes was also used for Pb2+ sensing. In this article, these Pb2+ recognition mechanisms are reviewed from fundamental chemistry to the design of fluorescent, colorimetric, and electrochemical biosensors. In addition, various signal amplification mechanisms such as rolling circle amplification, hairpin hybridization chain reaction and nuclease-assisted methods are coupled to these sensing methods to drive up sensitivity. We mainly cover recent examples published since 2015. In the end, some practical aspects of these sensors and future research opportunities are discussed.
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Affiliation(s)
- Yongjie Yang
- Department of Food and Biological Sciences, College of Agriculture, Yanbian University, Yanji, 133002, China; Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Weixuan Li
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada; Water Institute, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada.
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Ji P, Han G, Huang Y, Jiang H, Zhou Q, Liu X, Kong D. Ultrasensitive ratiometric detection of Pb 2+ using DNA tetrahedron-mediated hyperbranched hybridization chain reaction. Anal Chim Acta 2020; 1147:170-177. [PMID: 33485576 DOI: 10.1016/j.aca.2020.12.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/18/2020] [Accepted: 12/22/2020] [Indexed: 10/22/2022]
Abstract
A fluorescent sensing strategy was developed for rapid, highly sensitive and specific detection of lead (II) ion (Pb2+) on the basis of Pb2+ DNAzyme-controlled tetrahedral DNA nanostructure (TDN)-mediated hyper-branched hybridization chain reaction (hHCR). In this strategy, DNA hairpins used for HCR amplification are modified on the four vertexes of TDN, which are then used to perform rapid TDN-hHCR in the presence of an initiator strand, producing large-sized cross-linked reaction products and thus giving greatly improved fluorescence resonance energy transfer (FRET) signal output. Pb2+ DNAzyme catalyzes the cleavage of the initiator strand, inhibiting the initiation of TDN-hHCR and giving decreased FRET signal. Synergetic signal amplification of Pb2+ DNAzyme-catalyzed cleavage reaction and subsequent TDN-hHCR confers the sensing platform with ultrahigh sensitivity. As low as 0.25 pM Pb2+ can be detected by using either signal "turn-on" or "turn-off" mode. The whole detection process can be finished within 20 min. Strong anti-interference capacity of FRET-based ratiometric detection and high specificity of Pb2+ DNAzyme endow the sensing platform with great practical application potential, which was demonstrated by the accurate detection of Pb2+ in real river water, fruit, vegetable and grain samples.
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Affiliation(s)
- Pingping Ji
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, PR China; Key Laboratory for Environmental Factors Control of Agro-product quality Safety, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Guimei Han
- College of Chemistry and Chemical Engineering, Jinan, 250000, PR China
| | - Yan Huang
- College of Life sciences, Nankai University, Tianjin, China
| | - Hongxin Jiang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, PR China; Key Laboratory for Environmental Factors Control of Agro-product quality Safety, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China.
| | - Qiwen Zhou
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, PR China; Key Laboratory for Environmental Factors Control of Agro-product quality Safety, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China.
| | - Xiaowei Liu
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, PR China; Key Laboratory for Environmental Factors Control of Agro-product quality Safety, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Deming Kong
- Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, 300071, PR China
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Platform- and label-free detection of lead ions in environmental and laboratory samples using G-quadraplex probes by circular dichroism spectroscopy. Sci Rep 2020; 10:20461. [PMID: 33235290 PMCID: PMC7686487 DOI: 10.1038/s41598-020-77449-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 10/13/2020] [Indexed: 12/15/2022] Open
Abstract
Guanine-rich quadruplex (G-QD) are formed by conversion of nucleotides with specific sequences by stabilization of positively charged K+ or Na+. These G-QD structures differentially absorb two-directional (right- and left-handed) circularly polarized light, which can discriminate the parallel or anti-parallel structures of G-QDs. In this study, G-QDs stabilized by Pb2+ were analyzed by a circular dichroism (CD) spectroscopy to determine Pb2+ concentration in water samples. Thrombin aptamer (TBA), PS2.M, human telomeric DNA (HTG), AGRO 100, and telomeric related sequence (T2) were studied to verify their applicability as probes for platform- and label-free detection of Pb2+ in environmental as well as laboratory samples. Among these nucleotides, TBA and PS2.M exhibited higher binding constants for Pb2+, 1.20-2.04 × 106/M at and 4.58 × 104-1.09 × 105/M at 100 micromolar and 100 mM K+ concentration, respectively. They also exhibited excellent selectivity for Pb2+ than for Al3+, Cu2+, Ni2+, Fe3+, Co2+, and Cr2+. When Pb2+ was spiked into an effluent sample from a wastewater treatment plant (WWTP), its existence was detected by CD spectroscopy following a simple addition of TBA or PS2.M. By the addition of TBA and PS2.M, the Pb2+ signals were observed in effluent samples over 0.5 micromolar (100 ppb) concentration. Furthermore, PS2.M caused a Pb2+-specific absorption band in the effluent sample without spiking of Pb2+, and could be induced to G-QD structure by the background Pb2+ concentration in the effluent, 0.159 micromolar concentration (3.30 ppb). Taken together, we propose that TBA and PS2.M are applicable as platform- and label-free detection probes for monitoring Pb2+ in environmental samples such as discharged effluent from local WWTPs, using CD spectroscopy.
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Amouzadeh Tabrizi M, Ferre-Borrull J, Marsal LF. Advances in Optical Biosensors and Sensors Using Nanoporous Anodic Alumina. SENSORS (BASEL, SWITZERLAND) 2020; 20:E5068. [PMID: 32906635 PMCID: PMC7570681 DOI: 10.3390/s20185068] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/03/2020] [Accepted: 09/04/2020] [Indexed: 12/11/2022]
Abstract
This review paper focuses on recent progress in optical biosensors using self-ordered nanoporous anodic alumina. We present the fabrication of self-ordered nanoporous anodic alumina, surface functionalization, and optical sensor applications. We show that self-ordered nanoporous anodic alumina has good potential for use in the fabrication of antibody-based (immunosensor), aptamer-based (aptasensor), gene-based (genosensor), peptide-based, and enzyme-based optical biosensors. The fabricated optical biosensors presented high sensitivity and selectivity. In addition, we also showed that the performance of the biosensors and the self-ordered nanoporous anodic alumina can be used for assessing biomolecules, heavy ions, and gas molecules.
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Affiliation(s)
| | | | - Lluis F. Marsal
- Departamento de Ingeniería Electrónica, Eléctrica y Automática, Universitat Rovira i Virgili, Avda. Països Catalans 26, 43007 Tarragona, Spain; (M.A.T.); (J.F.-B.)
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Huo B, Hu Y, Gao Z, Li G. Recent advances on functional nucleic acid-based biosensors for detection of food contaminants. Talanta 2020; 222:121565. [PMID: 33167261 DOI: 10.1016/j.talanta.2020.121565] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 08/17/2020] [Accepted: 08/19/2020] [Indexed: 02/06/2023]
Abstract
It has seen increasing development of reliable, robust, and flexible biosensors for rapid food-safety analysis in the past few decades. Recently, functional nucleic acid-based biosensors have attracted attention because of their programmability, bottom-up characteristics, and structural switches. However, few systematic reviews devoted to categorizing the potential of DNA nanostructures and devices were found for detecting food contaminants. Hence, the applications of functional nucleic acid-based biosensors were reviewed for analyzing food contaminants, including foodborne pathogen bacteria, biotoxins, heavy metals, and et al. In addition to categorizing the various biosensors, multiple signal readout strategies, such as optical, electrochemical, and mass-based signals were also examined. Finally, the future changes and potential opportunities, as well as practical applications of functional nucleic acid-based biosensors were discussed.
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Affiliation(s)
- Bingyang Huo
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, China
| | - Yuling Hu
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, China
| | - Zhixian Gao
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Environmental and Operational Medicine, Tianjin, 300050, China
| | - Gongke Li
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, China.
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Wu H, Wang S, Li SFY, Bao Q, Xu Q. A label-free lead(II) ion sensor based on surface plasmon resonance and DNAzyme-gold nanoparticle conjugates. Anal Bioanal Chem 2020; 412:7525-7533. [PMID: 32829439 DOI: 10.1007/s00216-020-02887-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 08/06/2020] [Accepted: 08/14/2020] [Indexed: 02/07/2023]
Abstract
Detection of lead(II) (Pb2+) ions in water is important for the protection of human health and environment. The growing demand for onsite detection still faces challenges for sensitive and easy-to-use methods. In this work, a novel surface plasmon resonance (SPR) biosensor based on GR-5 DNAzyme and gold nanoparticles (AuNPs) was developed. Thiolated DNAzyme was immobilized on the gold surface of the sensor chip followed by anchoring the substrate-functionalized AuNPs through the DNAzyme-substrate hybridization. The coupling between the localized surface plasmon (LSP) of AuNPs and the surface plasmon polaritons (SPP) on the gold sensor surface was used to improve the sensitivity. The substrate cleavage in the presence of Pb2+ ions was catalyzed by DNAzyme, leading to the removal of AuNPs and the diminished LSP-SPP coupling. The optimal detection limit was 80 pM for the sensor fabricated with 1 μM DNAzyme, corresponding to two or three orders of magnitude lower than the toxicity levels of Pb2+ in drinking water defined by WHO and USEPA. By tuning the surface coverage of DNAzyme, the sensitivity and dynamic range could be controlled. This sensor also featured high selectivity to Pb2+ ions and simple detection procedure. Successful detection of Pb2+ ions in groundwater indicates that this method has the prospect in the onsite detection of Pb2+ ions in water. Given the variety of AuNPs and metal-specific DNAzymes, this detection strategy would lead to the development of more sensitive and versatile heavy metal sensors. Graphical abstract.
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Affiliation(s)
- Huanan Wu
- Shenzhen Engineering Laboratory for Eco-Efficient Recycled Materials, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, Guangdong, China
| | - Shuokang Wang
- Shenzhen Engineering Laboratory for Eco-Efficient Recycled Materials, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, Guangdong, China
| | - Sam Fong Yau Li
- Department of Chemistry, National University of Singapore, Singapore, 117543, Singapore
| | - Qi Bao
- Shenzhen Engineering Laboratory for Eco-Efficient Recycled Materials, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, Guangdong, China
| | - Qiyong Xu
- Shenzhen Engineering Laboratory for Eco-Efficient Recycled Materials, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, Guangdong, China.
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Zhang C, Hao T, Lin H, Wang Q, Wu Y, Kang K, Ji X, Guo Z. One-step electrochemical sensor based on an integrated probe toward sub-ppt level Pb 2+ detection by fast scan voltammetry. Anal Chim Acta 2020; 1128:174-183. [PMID: 32825900 DOI: 10.1016/j.aca.2020.07.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 06/29/2020] [Accepted: 07/02/2020] [Indexed: 01/14/2023]
Abstract
Herein, a one-step electrochemical sensor for selective and sensitive detection of lead ion Pb2+ was developed based on an integrated probe meso-tetra(4-carboxyphenyl) porphine (TCPP)-multi-walled carbon nanotubes (MWCNTs)@Fe3O4, which is TCPP-modified magnetic multi-walled carbon nanotubes. In the integrated probe, TCPP is a porphyrin with a specific cavity structure which could selectively chelate with Pb2+, MWCNTs with good electric conductivity provide a place to load TCPP and form a specific adsorption state of Pb2+ on the electrode surface, and Fe3O4 enables the rapid separation and one-step fabrication of the electrochemical sensor. Based on it, the sample pre-enrichment, separation and determination can be integrated, making the whole process very fast and simple. In addition, fast scan voltammetry (FSV) with a scan rate up to 200 V/s could be used to improve the detection sensitivity greatly, benefitting from the specific adsorption state formed. Under the optimal conditions obtained through orthogonal experiments including adsorption time, integrated probe dosage and solution pH, there was a good linear relationship between the peak current and Pb2+ concentration ranging from 2.0 × 10-4 μg L-1 to 2.0 × 10-3 μg L-1, with the limit of detection (LOD) being 6.7 × 10-5 μg L-1 (S/N = 3) i.e. 0.067 ppt. Analysis of actual water samples was successful. Therefore, being simple, fast, selective and sensitive, the one-step electrochemical sensor proposed has a good potential in practical applications.
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Affiliation(s)
- Chunfeng Zhang
- State Key Laboratory for Managing Biotic, Chemical Threats to the Quality, Safety of Agro-products, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Tingting Hao
- State Key Laboratory for Managing Biotic, Chemical Threats to the Quality, Safety of Agro-products, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Han Lin
- State Key Laboratory for Managing Biotic, Chemical Threats to the Quality, Safety of Agro-products, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Qi Wang
- State Key Laboratory for Managing Biotic, Chemical Threats to the Quality, Safety of Agro-products, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China
| | - Yangbo Wu
- Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo, 315211, PR China
| | - Kai Kang
- School of Pharmacy, Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Xueping Ji
- School of Pharmacy, Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Zhiyong Guo
- State Key Laboratory for Managing Biotic, Chemical Threats to the Quality, Safety of Agro-products, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, PR China.
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Electrochemical impedance biosensor array based on DNAzyme-functionalized single-walled carbon nanotubes using Gaussian process regression for Cu(II) and Hg(II) determination. Mikrochim Acta 2020; 187:207. [DOI: 10.1007/s00604-020-4202-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 02/28/2020] [Indexed: 12/12/2022]
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High-performance biosensing based on autonomous enzyme-free DNA circuits. Top Curr Chem (Cham) 2020; 378:20. [DOI: 10.1007/s41061-020-0284-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 01/17/2020] [Indexed: 12/28/2022]
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Chen J, Zhang Y, Cheng M, Mergny JL, Lin Q, Zhou J, Ju H. Highly active G-quadruplex/hemin DNAzyme for sensitive colorimetric determination of lead(II). Mikrochim Acta 2019; 186:786. [DOI: 10.1007/s00604-019-3950-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 10/16/2019] [Indexed: 12/11/2022]
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Ekesan Ş, York DM. Dynamical ensemble of the active state and transition state mimic for the RNA-cleaving 8-17 DNAzyme in solution. Nucleic Acids Res 2019; 47:10282-10295. [PMID: 31511899 PMCID: PMC6821293 DOI: 10.1093/nar/gkz773] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 08/20/2019] [Accepted: 09/03/2019] [Indexed: 02/01/2023] Open
Abstract
We perform molecular dynamics simulations, based on recent crystallographic data, on the 8-17 DNAzyme at four states along the reaction pathway to determine the dynamical ensemble for the active state and transition state mimic in solution. A striking finding is the diverse roles played by Na+ and Pb2+ ions in the electrostatically strained active site that impact all four fundamental catalytic strategies, and share commonality with some features recently inferred for naturally occurring hammerhead and pistol ribozymes. The active site Pb2+ ion helps to stabilize in-line nucleophilic attack, provides direct electrostatic transition state stabilization, and facilitates leaving group departure. A conserved guanine residue is positioned to act as the general base, and is assisted by a bridging Na+ ion that tunes the pKa and facilitates in-line fitness. The present work provides insight into how DNA molecules are able to solve the RNA-cleavage problem, and establishes functional relationships between the mechanism of these engineered DNA enzymes with their naturally evolved RNA counterparts. This adds valuable information to our growing body of knowledge on general mechanisms of phosphoryl transfer reactions catalyzed by RNA, proteins and DNA.
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Affiliation(s)
- Şölen Ekesan
- Laboratory for Biomolecular Simulation Research, Institute for Quantitative Biomedicine, and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Darrin M York
- Laboratory for Biomolecular Simulation Research, Institute for Quantitative Biomedicine, and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
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Ji R, Niu W, Chen S, Xu W, Ji X, Yuan L, Zhao H, Geng M, Qiu J, Li C. Target-inspired Pb2+-dependent DNAzyme for ultrasensitive electrochemical sensor based on MoS2-AuPt nanocomposites and hemin/G-quadruplex DNAzyme as signal amplifier. Biosens Bioelectron 2019; 144:111560. [DOI: 10.1016/j.bios.2019.111560] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 07/30/2019] [Accepted: 07/31/2019] [Indexed: 12/12/2022]
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DNAzyme-Functionalized R-Phycoerythrin as a Cost-Effective and Environment-Friendly Fluorescent Biosensor for Aqueous Pb 2+ Detection. SENSORS 2019; 19:s19122732. [PMID: 31216658 PMCID: PMC6630308 DOI: 10.3390/s19122732] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/10/2019] [Accepted: 06/16/2019] [Indexed: 01/28/2023]
Abstract
The sensitive detection of Pb2+ is of significant importance for food safety, environmental monitoring, and human health care. To this end, a novel fluorescent biosensor, DNAzyme-functionalized R-phycoerythrin (DNAzyme-R-PE), was presented for Pb2+ analysis. The biosensor was prepared via the immobilization of Iowa Black® FQ-modified DNAzyme–substrate complex onto the surface of SPDP-functionalized R-PE. The biosensor produced a minimal fluorescence signal in the absence of Pb2+. However, Pb2+ recognition can induce the cleavage of substrate, resulting in a fluorescence restoration of R-PE. The fluorescence changes were used to measure sensitively Pb2+ and the limit of detection was 0.16 nM with a linear range from 0.5–75 nM. Furthermore, the proposed biosensor showed excellent selectivity towards Pb2+ even in the presence of other metal ions interferences and was demonstrated to successfully determine Pb2+ in spiked lake water samples.
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Berlina AN, Zherdev AV, Dzantiev BB. Progress in rapid optical assays for heavy metal ions based on the use of nanoparticles and receptor molecules. Mikrochim Acta 2019; 186:172. [PMID: 30767144 DOI: 10.1007/s00604-018-3168-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Accepted: 12/09/2018] [Indexed: 02/06/2023]
Abstract
This review (with 230 refs.) covers recent progress in rapid optical assays for heavy metals (primarily lead and mercury as the most relevant) based on the use of nanoparticles and receptor molecules. An introduction surveys the importance, regulatory demands (such as maximum permissible concentrations) and potential and limitations of various existing methods. This is followed by a general discussion on the use of nanoparticles in optical assays of heavy metals (including properties, basic mechanisms of signal generation). The next sections cover methods for the functionalization of nanoparticles with (a) sulfur-containing compounds (used for modification of nanoparticles or added to the reaction medium), (b) nitrogen-containing compounds (such as amino acids, polypeptides, and heterocyclic molecules), and (c) oxygen-containing species (such as hydroxy and carbonyl compounds). This is continued by a specific description of specific assays based on the use of aptamers as receptors, on the use of deoxyribozymes as synthetic reaction catalysts, of G-quadruplex aptamers, of aptamers in logic gate-type of assays of linear (unstructured) aptamers ("hairpins"), and on the use of aptamers in lateral flow assays. A next section covers assays based on the employment of antibodies as receptors (used in the immunoassay development). The properties of various nanoparticles and their applicability in optical assays are also discussed in some detail. Final sections discuss the selectivity of assays, potential interferences by other cations, methods for their elimination, and also matrix effects and approaches for sample pretreatment. A concluding section discusses current challenges and future trends. Analysis based on enzyme inhibition assay is not treated here but enzyme-like action of some receptor molecules such as DNAzymes is discussed. Graphical abstract Schematic presentation of main principles of application of various nanoparticles with receptor molecules (S-, N-, O-containing, heterocyclic compounds, proteins, antibody, aptamers) for heavy metals ions detection. The included methods cover optical assays with description of mechanisms of interactions and signal generation.
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Affiliation(s)
- Anna N Berlina
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky prospect 33, Moscow, 119071, Russia
| | - Anatoly V Zherdev
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky prospect 33, Moscow, 119071, Russia
| | - Boris B Dzantiev
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky prospect 33, Moscow, 119071, Russia.
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Lai C, Liu S, Zhang C, Zeng G, Huang D, Qin L, Liu X, Yi H, Wang R, Huang F, Li B, Hu T. Electrochemical Aptasensor Based on Sulfur-Nitrogen Codoped Ordered Mesoporous Carbon and Thymine-Hg 2+-Thymine Mismatch Structure for Hg 2+ Detection. ACS Sens 2018; 3:2566-2573. [PMID: 30411617 DOI: 10.1021/acssensors.8b00926] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A renewable electrochemical aptasensor was proposed for super-sensitive determination of Hg2+. The novel aptasensor, based on sulfur-nitrogen codoped ordered mesoporous carbon (SN-OMC) and thymine-Hg2+-thymine (T-Hg2+-T) mismatch structure, used ferrocene as signal molecules to achieve the conversion of current signals. In the absence of Hg2+, the thiol-modified T-rich probe 1 spontaneously formed a hairpin structure by base pairing. After being hybridized with the ferrocene-labeled probe 2 in the presence of Hg2+, the hairpin structure of probe 1 was opened due to the preferential formation of the T-Hg2+-T mismatch structure, and the ferrocene signal molecules approached the modified electrode surface. SN-OMC with high specific surface area and ample active sites acted as a signal amplification element in electrochemical sensing. The sensitive determination of Hg2+ can be actualized by analyzing the relationship between the change of oxidation current caused by ferrocene signal molecules and the Hg2+ concentrations. The aptasensor had a fine linear correlation in the range of 0.001-1000 nM with a detection limit of 0.45 pM. The aptasensor also displayed a good response in real sample detection and provided a promising possibility for in situ detection.
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Affiliation(s)
- Cui Lai
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry
of Education, Changsha 410082, P.R. China
| | - Shiyu Liu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry
of Education, Changsha 410082, P.R. China
| | - Chen Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry
of Education, Changsha 410082, P.R. China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry
of Education, Changsha 410082, P.R. China
| | - Danlian Huang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry
of Education, Changsha 410082, P.R. China
| | - Lei Qin
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry
of Education, Changsha 410082, P.R. China
| | - Xigui Liu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry
of Education, Changsha 410082, P.R. China
| | - Huan Yi
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry
of Education, Changsha 410082, P.R. China
| | - Rongzhong Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry
of Education, Changsha 410082, P.R. China
| | - Fanglong Huang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry
of Education, Changsha 410082, P.R. China
| | - Bisheng Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry
of Education, Changsha 410082, P.R. China
| | - Tianyu Hu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry
of Education, Changsha 410082, P.R. China
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Beheshti-Marnani A, Hatefi-Mehrjardi A, Es'haghi Z. A sensitive biosensing method for detecting of ultra-trace amounts of AFB1 based on "Aptamer/reduced graphene oxide" nano-bio interaction. Colloids Surf B Biointerfaces 2018; 175:98-105. [PMID: 30522013 DOI: 10.1016/j.colsurfb.2018.11.087] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 11/19/2018] [Accepted: 11/30/2018] [Indexed: 12/20/2022]
Abstract
A simple, low-cost and sensitive label-free aptasensor assembled with assisting reduced graphene oxide nanosheets as the signal amplifier was fabricated and applied for detecting ultra-low levels of Aflatoxin B1(AFB1) through a nano-bio interaction system. The conditions of different modified glassy carbon electrodes as the base of aptasensor were investigated by cyclic voltammetry (CV), differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS). The performance of the fabricated aptasensor was evaluated by FESEM, HRTEM and AFM images. The proposed biosensor detected AFB1sensitively in a wide linear range (0.5 nM-4μM) by DPV with a considerable low limit of detection (LOD = 0.07 nM) and good repeatability (RSD = 2.9) and stability. Finally, the present aptasensor was applied successfully for monitoring AFB1 with appropriate recoveries in pasteurized cow milk and human blood plasma as real samples.
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Affiliation(s)
| | | | - Zarrin Es'haghi
- Department of Chemistry, Payame Noor University (PNU), P.O. Box: 19395-4697, Tehran, Iran.
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Sensitive and label-free electrochemical lead ion biosensor based on a DNAzyme triggered G-quadruplex/hemin conformation. Biosens Bioelectron 2018; 115:91-96. [DOI: 10.1016/j.bios.2018.04.054] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 04/25/2018] [Accepted: 04/25/2018] [Indexed: 01/01/2023]
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