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Tanaka H, Taniguchi M. Self-Assembled Monolayers of Gemini-Type Amphiphilic Hexabenzocoronenes on Gold: Contribution of Their Triethylene Glycol Side Chains to Self-Assembly Formation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:15078-15084. [PMID: 37824836 DOI: 10.1021/acs.langmuir.3c02130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
We report on a two-dimensional self-assembled structure of a supramolecule with hydrophilic oligoethylene glycol (EG) units, which are capable of stronger electrostatic interactions than van der Waals (vdW) interactions between alkyl chains. For this purpose, hexabenzocoronene (HBC) with two hydrophobic dodecyl chains on one side of the HBC core and two hydrophilic triethylene glycol (TEG) chains on the other side of the HBC core (HBCGemini) and HBCGemini with a trinitrofluorenone (TNF) added to the end of one TEG chain (HBCTNFGemini) were employed. Scanning tunneling microscopy (STM) revealed the presence of multiple two-dimensional self-assembled structures in each of HBCGemini and HBCTNFGemini deposited on the gold substrate in vacuum. The role of polar functional groups in these observations is discussed based on semiempirical molecular orbital simulations. Two types of 2D organized structures of HBC-TEG were observed: one with rectangular and relatively dense unit cells and the other with nearly square and relatively sparse unit cells. In both organized structures, the phenyl group TEG units and alkyl chains were considered to be the main molecular interactions with each other. On the other hand, in HBCTNFGemini, three types of organized structures were observed, which could be explained by the mechanism of interdigitation of the TEG-containing side-chain moieties to form a dimeric core. The EG units are more flexible than the alkyl chains and thus can interact flexibly with the hydrophobic HBC core, and the glycol side chains facilitate the intermolecular interactions as well as the alkyl chains.
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Affiliation(s)
- Hiroyuki Tanaka
- The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Masateru Taniguchi
- The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Ibaraki, Osaka 567-0047, Japan
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2
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Tian R, Ji P, Wang L, Zhang H, Sun J. TNT sensor based on accumulation layer and effective distance of FRET mechanism with ultra-high sensitivity. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105706] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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3
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Fast Detection of 2,4,6-Trinitrotoluene (TNT) at ppt Level by a Laser-Induced Immunofluorometric Biosensor. BIOSENSORS-BASEL 2020; 10:bios10080089. [PMID: 32764236 PMCID: PMC7460505 DOI: 10.3390/bios10080089] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 07/27/2020] [Accepted: 07/30/2020] [Indexed: 12/20/2022]
Abstract
The illegal use of explosives by terrorists and other criminals is an increasing issue in public spaces, such as airports, railway stations, highways, sports venues, theaters, and other large buildings. Security in these environments can be achieved by different means, including the installation of scanners and other analytical devices to detect ultra-small traces of explosives in a very short time-frame to be able to take action as early as possible to prevent the detonation of such devices. Unfortunately, an ideal explosive detection system still does not exist, which means that a compromise is needed in practice. Most detection devices lack the extreme analytical sensitivity, which is nevertheless necessary due to the low vapor pressure of nearly all explosives. In addition, the rate of false positives needs to be virtually zero, which is also very difficult to achieve. Here we present an immunosensor system based on kinetic competition, which is known to be very fast and may even overcome affinity limitation, which impairs the performance of many traditional competitive assays. This immunosensor consists of a monolithic glass column with a vast excess of immobilized hapten, which traps the fluorescently labeled antibody as long as no explosive is present. In the case of the explosive 2,4,6-trinitrotoluene (TNT), some binding sites of the antibody will be blocked, which leads to an immediate breakthrough of the labeled protein, detectable by highly sensitive laser-induced fluorescence with the help of a Peltier-cooled complementary metal-oxide-semiconductor (CMOS) camera. Liquid handling is performed with high-precision syringe pumps and chip-based mixing-devices and flow-cells. The system achieved limits of detection of 1 pM (1 ppt) of the fluorescent label and around 100 pM (20 ppt) of TNT. The total assay time is less than 8 min. A cross-reactivity test with 5000 pM solutions showed no signal by pentaerythritol tetranitrate (PETN), 1,3,5-trinitroperhydro-1,3,5-triazine (RDX), and octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX). This immunosensor belongs to the most sensitive and fastest detectors for TNT with no significant cross-reactivity by non-related compounds. The consumption of the labeled antibody is surprisingly low: 1 mg of the reagent would be sufficient for more than one year of continuous biosensor operation.
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4
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Jarczewska M, Malinowska E. The application of antibody-aptamer hybrid biosensors in clinical diagnostics and environmental analysis. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:3183-3199. [PMID: 32930180 DOI: 10.1039/d0ay00678e] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The growing number of various diseases and the increase of environmental contamination are the causes for the development of novel methods for their detection. The possibility of the application of affinity-based biosensors for such purposes seems particularly promising as they provide high selectivity and low detection limits. Recently, the usage of hybrid antibody-aptamer sandwich constructs was shown to be more advantageous in terms of working parameters in comparison to aptamer-based and immune-based biosensors. This review is focused on the usage of hybrid antibody-aptamer receptor layers for the determination of clinically and environmentally important target molecules. In this work, antibodies and aptamer molecules are characterized and the methods of their immobilization as well as analytical signal generation are shown. This is followed by the critical presentation of examples of hybrid sandwich biosensors that have been elaborated in the past 12 years.
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Affiliation(s)
- Marta Jarczewska
- The Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, Warsaw, 00-664, Poland.
| | - Elżbieta Malinowska
- The Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, Warsaw, 00-664, Poland.
- Centre for Advanced Materials and Technologies CEZAMAT, Poleczki 19, 02-822 Warsaw, Poland
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5
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Liu R, Li Z, Huang Z, Li K, Lv Y. Biosensors for explosives: State of art and future trends. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.05.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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6
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Bai H, Yuan M, Wang X, Wang X, Che J. Development of a Gold Nanoparticle-Functionalized Surface Plasmon Resonance Assay for the Sensitive Detection of Monoclonal Antibodies and Its Application in Pharmacokinetics. Drug Metab Dispos 2019; 47:1361-1367. [PMID: 31324700 DOI: 10.1124/dmd.119.086249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Accepted: 07/15/2019] [Indexed: 11/22/2022] Open
Abstract
As a prominent human therapeutic, therapeutic monoclonal antibodies (mAbs) have attracted increasing attention in the past decade due to their high-targeting specificity, low toxicity, and prolonged efficacy. Systematic pharmacokinetic analysis of mAbs not only largely facilitates the understanding of their biologic functions but also promotes the development of therapeutic drug discovery, early clinical trial implementation, and therapeutic monitoring. However, the extremely complex nature of biomatrices and the especially low dosages of mAbs make their detection in biomatrices and further pharmacokinetic analysis highly challenging. Therefore, a method capable of reliably, quickly, and sensitively quantifying mAbs in biomatrices is urgently needed. In this work, we developed and evaluated an gold nanoparticle-functionalized surface plasmon resonance assay for cetuximab (C225) detection and pharmacokinetic analysis in rhesus monkeys. Combining its advantages of label-free pretreatment and amplified signal response, the lower limit of quantitation of C225 in monkey serum was reduced to 0.0125 μg/ml, and the linear range had an order of magnitude comparable to that of an ELISA-based method. Furthermore, the pharmacokinetics of C225 in rhesus monkeys was studied after intravenous infusions of single doses at 7.5, 24, and 75 mg/kg. The concentration of C225 in monkey serum was detectable after dosing for 720 hours. We believe that this new strategy will be applicable as a general protocol for mAb quantification, pharmacokinetic characteristic determination, and toxicokinetic analysis during drug development.
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Affiliation(s)
- Haihong Bai
- Phase I Clinical Trial Center, Beijing Shijitan Hospital of Capital Medical University, Beijing, PR China (H.B., Xin.W.); State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, PR China (M.Y., J.C.); and Chinese Pharmaceutical Association, Beijing, PR China (Xia.W.)
| | - Mei Yuan
- Phase I Clinical Trial Center, Beijing Shijitan Hospital of Capital Medical University, Beijing, PR China (H.B., Xin.W.); State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, PR China (M.Y., J.C.); and Chinese Pharmaceutical Association, Beijing, PR China (Xia.W.)
| | - Xiaojing Wang
- Phase I Clinical Trial Center, Beijing Shijitan Hospital of Capital Medical University, Beijing, PR China (H.B., Xin.W.); State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, PR China (M.Y., J.C.); and Chinese Pharmaceutical Association, Beijing, PR China (Xia.W.)
| | - Xinghe Wang
- Phase I Clinical Trial Center, Beijing Shijitan Hospital of Capital Medical University, Beijing, PR China (H.B., Xin.W.); State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, PR China (M.Y., J.C.); and Chinese Pharmaceutical Association, Beijing, PR China (Xia.W.)
| | - Jinjing Che
- Phase I Clinical Trial Center, Beijing Shijitan Hospital of Capital Medical University, Beijing, PR China (H.B., Xin.W.); State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, PR China (M.Y., J.C.); and Chinese Pharmaceutical Association, Beijing, PR China (Xia.W.)
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7
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Misawa N, Fujii S, Kamiya K, Osaki T, Takaku T, Takahashi Y, Takeuchi S. Construction of a Biohybrid Odorant Sensor Using Biological Olfactory Receptors Embedded into Bilayer Lipid Membrane on a Chip. ACS Sens 2019; 4:711-716. [PMID: 30829476 DOI: 10.1021/acssensors.8b01615] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
This paper describes an odorant sensor based on mosquito olfactory receptors (ORs) that is sensitive to the volatile organic compound octenol. The ORs and OR coreceptors were reconstructed in the lipid bilayer membrane in a chamber device equipped with electrodes. Using this odorant sensor, we obtained ion current changes caused by specific OR responses to octenol. We installed the odorant sensor into a mobile robot and succeeded in the demonstration of coupling octenol gas detection and robot actuation. We believe that this biohybrid odorant sensing system will be a key technology for future artificial olfaction.
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Affiliation(s)
- Nobuo Misawa
- Kanagawa Institute of Industrial Science and Technology, Kawasaki, Kanagawa 213-0012, Japan
| | - Satoshi Fujii
- Kanagawa Institute of Industrial Science and Technology, Kawasaki, Kanagawa 213-0012, Japan
| | - Koki Kamiya
- Kanagawa Institute of Industrial Science and Technology, Kawasaki, Kanagawa 213-0012, Japan
| | - Toshihisa Osaki
- Kanagawa Institute of Industrial Science and Technology, Kawasaki, Kanagawa 213-0012, Japan
- Institute of Industrial Science, The University of Tokyo, Meguro, Tokyo 153-8505, Japan
| | - Tomoyuki Takaku
- Environmental Health Science Laboratory, Sumitomo Chemical Company, Limited, Konohana, Osaka 554-8558, Japan
| | - Yasuhiko Takahashi
- Environmental Health Science Laboratory, Sumitomo Chemical Company, Limited, Konohana, Osaka 554-8558, Japan
| | - Shoji Takeuchi
- Kanagawa Institute of Industrial Science and Technology, Kawasaki, Kanagawa 213-0012, Japan
- Institute of Industrial Science, The University of Tokyo, Meguro, Tokyo 153-8505, Japan
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8
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Synthesis and spectral properties of new ethylene glycol bridged oxazol-5-ones: High Stokes' shift fluorophores sensitive to solvent polarity. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.09.092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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9
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Okochi M, Muto M, Yanai K, Tanaka M, Onodera T, Wang J, Ueda H, Toko K. Array-Based Rational Design of Short Peptide Probe-Derived from an Anti-TNT Monoclonal Antibody. ACS COMBINATORIAL SCIENCE 2017; 19:625-632. [PMID: 28845964 DOI: 10.1021/acscombsci.7b00035] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Complementarity-determining regions (CDRs) are sites on the variable chains of antibodies responsible for binding to specific antigens. In this study, a short peptide probe for recognition of 2,4,6-trinitrotoluene (TNT), was identified by testing sequences derived from the CDRs of an anti-TNT monoclonal antibody. The major TNT-binding site in this antibody was identified in the heavy chain CDR3 by antigen docking simulation and confirmed by an immunoassay using a spot-synthesis based peptide array comprising amino acid sequences of six CDRs in the variable region. A peptide derived from heavy chain CDR3 (RGYSSFIYWF) bound to TNT with a dissociation constant of 1.3 μM measured by surface plasmon resonance. Substitution of selected amino acids with basic residues increased TNT binding while substitution with acidic amino acids decreased affinity, an isoleucine to arginine change showed the greatest improvement of 1.8-fold. The ability to create simple peptide binders of volatile organic compounds from sequence information provided by the immune system in the creation of an immune response will be beneficial for sensor developments in the future.
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Affiliation(s)
- Mina Okochi
- Department
of Chemical Science and Engineering, School of Materials and Chemical
Technology, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
- JST, ImPACT, Sanban-cho
5, Chiyoda-ku, Tokyo 102-0075, Japan
| | - Masaki Muto
- Department
of Chemical Science and Engineering, School of Materials and Chemical
Technology, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
- JST, ImPACT, Sanban-cho
5, Chiyoda-ku, Tokyo 102-0075, Japan
| | - Kentaro Yanai
- Department
of Chemical Science and Engineering, School of Materials and Chemical
Technology, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Masayoshi Tanaka
- Department
of Chemical Science and Engineering, School of Materials and Chemical
Technology, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
- JST, ImPACT, Sanban-cho
5, Chiyoda-ku, Tokyo 102-0075, Japan
| | - Takeshi Onodera
- JST, ImPACT, Sanban-cho
5, Chiyoda-ku, Tokyo 102-0075, Japan
- Research
and Development Center for Taste and Odor Sensing, Kyushu University, Fukuoka, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Jin Wang
- JST, ImPACT, Sanban-cho
5, Chiyoda-ku, Tokyo 102-0075, Japan
- Research
and Development Center for Taste and Odor Sensing, Kyushu University, Fukuoka, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Hiroshi Ueda
- Laboratory
for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-18, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Kiyoshi Toko
- JST, ImPACT, Sanban-cho
5, Chiyoda-ku, Tokyo 102-0075, Japan
- Research
and Development Center for Taste and Odor Sensing, Kyushu University, Fukuoka, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
- Graduate
School of Information Science and Electrical Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
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10
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Rational Design of Peptide-Functionalized Surface Plasmon Resonance Sensor for Specific Detection of TNT Explosive. SENSORS 2017; 17:s17102249. [PMID: 28973962 PMCID: PMC5676640 DOI: 10.3390/s17102249] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 09/25/2017] [Accepted: 09/28/2017] [Indexed: 12/14/2022]
Abstract
In this study, a rationally-designed 2,4,6-trinitrotoluene (TNT) binding peptide derived from an amino acid sequence of the complementarity-determining region (CDR) of an anti-TNT monoclonal antibody was used for TNT detection based on a maleimide-functionalized surface plasmon resonance (SPR) sensor. By antigen-docking simulation and screening, the TNT binding candidate peptides were obtained as TNTHCDR1 derived from the heavy chain of CDR1, TNTHCDR2 derived from CDR2, and TNTHCDR3 from CDR3 of an anti-TNT antibody. The binding events between candidate peptides and TNT were evaluated using the SPR sensor by direct determination based on the 3-aminopropyltriethoxysilane (APTES) surface. The TNT binding peptide was directly immobilized on the maleimide-functionalized sensor chip surface from N-γ-maleimidobutyryl-oxysuccinimide ester (GMBS). The results demonstrated that peptide TNTHCDR3 was identified and selected as a TNT binding peptide among the other two candidate peptides. Five kinds of TNT analogues were also investigated to testify the selectivity of TNT binding peptide TNTHCDR3. Furthermore, the results indicated that the APTES-GMBS-based SPR sensor chip procedure featured a great potential application for the direct detection of TNT.
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11
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Shahdost-fard F, Roushani M. Impedimetric detection of trinitrotoluene by using a glassy carbon electrode modified with a gold nanoparticle@fullerene composite and an aptamer-imprinted polydopamine. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2424-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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12
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Zhao LJ, Yu RJ, Ma W, Han HX, Tian H, Qian RC, Long YT. Sensitive detection of protein biomarkers using silver nanoparticles enhanced immunofluorescence assay. Theranostics 2017; 7:876-883. [PMID: 28382160 PMCID: PMC5381250 DOI: 10.7150/thno.17575] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 12/01/2016] [Indexed: 02/02/2023] Open
Abstract
Detection of biomarkers is extremely important for the early diagnosis of diseases. Here, we developed an easy and highly sensitive fluorescence detection system for the determination of biomarkers by combining the rapid separation of magnetic beads and silver nanoparticles labeled antibodies. An ultrasensitive silver ions fluorescence probe 3', 6'-bis (diethylamino)-2-(2-iodoethyl) spiro[isoindoline-1, 9'-xanthen]-3-one (Ag+-FP) was applied to immunoassay. A significant signal amplification was achieved as the AgNPs can be dissolved by H2O2 and generate numerous Ag+, which would turn "on" the fluorescence of Ag+-FP. Using α-fetoprotein (AFP) and C-reactive protein (CRP) as target analytes, good linear responses were obtained from 0.1 to 10 ng mL-1 and the limits of detection (LOD) were as low as 70 pg·mL-1 and 30 pg·mL-1, respectively. In addition, the developed system was further evaluated for the detection of real samples including 30 positive serum specimens obtained from hepatocarcinoma patients and 20 negative serum samples, and performs as well as the commercial electrochemiluminescence immunoassay (ECLI) method with less cost and more convenience. Thus, the designed detection system can be used as a promising platform for the detection of a variety of biomarkers and served as a powerful tool in clinical diagnosis.
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Affiliation(s)
- Li-Jun Zhao
- Key Laboratory for Advanced Materials and Department of Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, P. R. China
| | - Ru-Jia Yu
- Key Laboratory for Advanced Materials and Department of Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, P. R. China
| | - Wei Ma
- Key Laboratory for Advanced Materials and Department of Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, P. R. China
| | - Huan-Xing Han
- Translational Medicine Center, Changzheng Hospital, the Second Military Medical University, P. R. China
| | - He Tian
- Key Laboratory for Advanced Materials and Department of Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, P. R. China
| | - Ruo-Can Qian
- Key Laboratory for Advanced Materials and Department of Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, P. R. China
| | - Yi-Tao Long
- Key Laboratory for Advanced Materials and Department of Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, P. R. China
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Gao J, Ma H, Lv X, Yan T, Li N, Cao W, Wei Q. A novel electrochemical immunosensor using β-cyclodextrins functionalized silver supported adamantine-modified glucose oxidase as labels for ultrasensitive detection of alpha-fetoprotein. Anal Chim Acta 2015; 893:49-56. [DOI: 10.1016/j.aca.2015.08.052] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Revised: 08/25/2015] [Accepted: 08/27/2015] [Indexed: 01/05/2023]
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14
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Mitsuno H, Sakurai T, Namiki S, Mitsuhashi H, Kanzaki R. Novel cell-based odorant sensor elements based on insect odorant receptors. Biosens Bioelectron 2015; 65:287-94. [DOI: 10.1016/j.bios.2014.10.026] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 10/13/2014] [Indexed: 01/09/2023]
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15
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Onodera T, Toko K. Towards an electronic dog nose: surface plasmon resonance immunosensor for security and safety. SENSORS 2014; 14:16586-616. [PMID: 25198004 PMCID: PMC4208188 DOI: 10.3390/s140916586] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 07/31/2014] [Accepted: 08/29/2014] [Indexed: 01/06/2023]
Abstract
This review describes an “electronic dog nose” based on a surface plasmon resonance (SPR) sensor and an antigen–antibody interaction for security and safety. We have concentrated on developing appropriate sensor surfaces for the SPR sensor for practical use. The review covers different surface fabrications, which all include variations of a self-assembled monolayer containing oligo(ethylene glycol), dendrimer, and hydrophilic polymer. We have carried out detection of explosives using the sensor surfaces. For the SPR sensor to detect explosives, the vapor or particles of the target substances have to be dissolved in a liquid. Therefore, we also review the development of sampling processes for explosives, and a protocol for the measurement of explosives on the SPR sensor in the field. Additionally, sensing elements, which have the potential to be applied for the electronic dog nose, are described.
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Affiliation(s)
- Takeshi Onodera
- Research and Development Center for Taste and Odor Sensing, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Kiyoshi Toko
- Research and Development Center for Taste and Odor Sensing, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
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16
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Gao J, Du B, Zhang X, Guo A, Zhang Y, Wu D, Ma H, Wei Q. Ultrasensitive enzyme-free immunoassay for squamous cell carcinoma antigen using carbon supported Pd–Au as electrocatalytic labels. Anal Chim Acta 2014; 833:9-14. [DOI: 10.1016/j.aca.2014.05.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Revised: 04/03/2014] [Accepted: 05/01/2014] [Indexed: 02/01/2023]
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17
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Tahara Y, Huang Z, Kiritoshi T, Onodera T, Toko K. Development of Indirect Competitive Immuno-Assay Method Using SPR Detection for Rapid and Highly Sensitive Measurement of Salivary Cortisol Levels. Front Bioeng Biotechnol 2014; 2:15. [PMID: 25152888 PMCID: PMC4126460 DOI: 10.3389/fbioe.2014.00015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 05/07/2014] [Indexed: 12/04/2022] Open
Abstract
The monitoring of salivary cortisol as a key biomarker of an individual’s stress response has been increasingly focused on. This paper describes the development of a novel cortisol immuno-assay method based on an indirect competitive method using a commercially available surface plasmon resonance instrument. The surface of an Au chip was modified with PEG6-COOH aromatic dialkanethiol self-assembled monolayers and hydrocortisone 3-(O-carboxymethyl) oxime (hydrocortisone 3-CMO) as a cortisol analog. A detection limit of 38 ppt range with a measurement range of 10 ppt–100 ppb was accomplished without the incubation of a mixing solution consisting of standard cortisol and an anti-cortisol antibody, and the time for quantification of cortisol concentration was 8 min from the sample injection. We experimentally compared our immuno-assay with a commercialized salivary cortisol enzyme-linked immunosorbent assay (ELISA) kit using human saliva samples. It was found that the results obtained by the cortisol immuno-assay had a good correlation with those obtained by ELISA assay (R = 0.96). Our findings indicate the potential utility of the cortisol immuno-assay for measurements of human salivary cortisol levels.
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Affiliation(s)
- Yusuke Tahara
- Graduate School of Information Science and Electrical Engineering, Kyushu University , Fukuoka , Japan
| | - Zhe Huang
- Graduate School of Information Science and Electrical Engineering, Kyushu University , Fukuoka , Japan
| | - Tetsuro Kiritoshi
- Graduate School of Information Science and Electrical Engineering, Kyushu University , Fukuoka , Japan
| | - Takeshi Onodera
- Research and Development Center for Taste and Odor Sensing, Kyushu University , Fukuoka , Japan
| | - Kiyoshi Toko
- Graduate School of Information Science and Electrical Engineering, Kyushu University , Fukuoka , Japan ; Research and Development Center for Taste and Odor Sensing, Kyushu University , Fukuoka , Japan
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18
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Yatabe R, Onodera T, Toko K. Fabrication of surface plasmon resonance sensor surface with control of the non-specific adsorption and affinity for the detection of 2,4,6-trinitrotoluene using an antifouling copolymer. Front Bioeng Biotechnol 2014; 2:10. [PMID: 25152884 PMCID: PMC4126440 DOI: 10.3389/fbioe.2014.00010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 04/15/2014] [Indexed: 11/13/2022] Open
Abstract
We fabricated a surface plasmon resonance (SPR) sensor using a hydrophilic polymer for the highly sensitive detection of 2,4,6-trinitrotoluene (TNT). The hydrophilic polymer was made from mono-2-(methacryloyloxy)ethylsuccinate (MES) and 2-hydroxyethylmethacrylate (HEMA) by surface-initiated atom transfer radical polymerization. The detection of TNT was carried out by displacement assay with the SPR measurement. In displacement assay, the affinity between anti-TNT antibody and the sensor surface, affects to the sensitivity. In the SPR measurement, non-specific adsorption should be controlled because SPR sensor cannot discriminate between specific and non-specific adsorption. Therefore, the affinity and non-specific adsorption were controlled by changing the ratio of HEMA to MES. A detection limit of 0.4 ng/ml (ppb) for TNT was achieved using a sensor surface with the lowest affinity without non-specific adsorption.
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Affiliation(s)
- Rui Yatabe
- Research and Development Center for Taste and Odor Sensing, Kyushu University , Fukuoka , Japan
| | - Takeshi Onodera
- Research and Development Center for Taste and Odor Sensing, Kyushu University , Fukuoka , Japan
| | - Kiyoshi Toko
- Graduate School of Information Science and Electrical Engineering, Kyushu University , Fukuoka , Japan
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Rapid detection of aflatoxin B1 by a bifunctional protein crosslinker-based surface plasmon resonance biosensor. Food Control 2014. [DOI: 10.1016/j.foodcont.2013.08.038] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Nakamura S, Yatabe R, Onodera T, Toko K. Sensitive detection of capsaicinoids using a surface plasmon resonance sensor with anti-homovanillic Acid polyclonal antibodies. BIOSENSORS-BASEL 2013; 3:374-84. [PMID: 25586413 PMCID: PMC4263568 DOI: 10.3390/bios3040374] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 11/05/2013] [Accepted: 11/07/2013] [Indexed: 11/16/2022]
Abstract
Recently, highly functional biosensors have been developed in preparation for possible large-scale terrorist attacks using chemical warfare agents. Practically applicable sensors are required to have various abilities, such as high portability and operability, the capability of performing rapid and continuous measurement, as well as high sensitivity and selectivity. We developed the detection method of capsaicinoids, the main component of some lachrymators, using a surface plasmon resonance (SPR) immunosensor as an on-site detection sensor. Homovanillic acid, which has a vanillyl group similar to capsaicinoids such as capsaicin and dihydrocapsaicin, was bound to Concholepas concholepas hemocyanin (CCH) for use as an immunogen to generate polyclonal antibodies. An indirect competitive assay was carried out to detect capsaicinoids using SPR sensor chips on which different capsaicin analogues were immobilized. For the sensor chip on which 4-hydroxy-3-methoxybenzylamine hydrochloride was immobilized, a detection limit of 150 ppb was achieved. We found that the incubation time was not required and the detection can be completed in five minutes.
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Affiliation(s)
- Shingo Nakamura
- Graduate School of Information Science and Electrical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Rui Yatabe
- Graduate School of Information Science and Electrical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Takeshi Onodera
- Graduate School of Information Science and Electrical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Kiyoshi Toko
- Graduate School of Information Science and Electrical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
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Povoski SP, Davis PD, Colcher D, Martin EW. Single molecular weight discrete PEG compounds: emerging roles in molecular diagnostics, imaging and therapeutics. Expert Rev Mol Diagn 2013; 13:315-9. [PMID: 23638813 DOI: 10.1586/erm.13.19] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Carrillo-Carrión C, Simonet BM, Valcárcel M. Determination of TNT explosive based on its selectively interaction with creatinine-capped CdSe/ZnS quantum dots. Anal Chim Acta 2013; 792:93-100. [DOI: 10.1016/j.aca.2013.07.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 07/02/2013] [Accepted: 07/04/2013] [Indexed: 01/01/2023]
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Fabrication of an SPR sensor surface with antifouling properties for highly sensitive detection of 2,4,6-trinitrotoluene using surface-initiated atom transfer polymerization. SENSORS 2013; 13:9294-304. [PMID: 23877126 PMCID: PMC3758649 DOI: 10.3390/s130709294] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 07/02/2013] [Accepted: 07/15/2013] [Indexed: 12/13/2022]
Abstract
In this study, we modified a surface plasmon resonance immunosensor chip with a polymer using surface-initiated atom transfer polymerization (SI-ATRP) for the highly sensitive detection of 2,4,6-trinitrotoluene (TNT). To immobilize a TNT analogue on the polymer, mono-2-(methacryloyloxy)ethylsuccinate (MES), which has a carboxyl group, was used in this study. However, the anti-TNT antibody may adsorb non-specifically on the polymer surface by an electrostatic interaction because MES is negatively charged. Therefore, a mixed monomer with MES and diethylaminoethylmethacrylate (DEAEM), which has a tertiary amino group and is positively charged, was prepared to obtain electroneutrality for suppressing the nonspecific adsorption. The detection of TNT was performed by inhibition assay using the polymer surface. To ensure high sensitivity to TNT, the affinity between the surface and the antibody was optimized by controlling the density of the initiator for ATRP by mixing two types of self-assembled monolayer reagents. As a result, a limit of detection of 5.7 pg/mL (ppt) for TNT was achieved using the optimized surface.
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Tort N, Salvador JP, Aviñó A, Eritja R, Comelles J, Martínez E, Samitier J, Marco MP. Synthesis of steroid-oligonucleotide conjugates for a DNA site-encoded SPR immunosensor. Bioconjug Chem 2012; 23:2183-91. [PMID: 23106618 DOI: 10.1021/bc300138p] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The excellent self-assembling properties of DNA and the excellent specificity of the antibodies to detect analytes of small molecular weight under competitive conditions have been combined in this study. Three oligonucleotide sequences (N(1)up, N(2)up, and N(3)up) have been covalently attached to three steroidal haptens (8, hG, and 13) of three anabolic-androgenic steroids (AAS), stanozolol (ST), tetrahydrogestrinone (THG), and boldenone (B), respectively. The synthesis of steroid-oligonucleotide conjugates has been performed by the reaction of oligonucleotides carrying amino groups with carboxyl acid derivatives of steroidal haptens. Due to the chemical nature of the steroid derivatives, two methods for coupling the haptens and the ssDNA have been studied: a solid-phase coupling strategy and a solution-phase coupling strategy. Specific antibodies against ST, THG, and B have been used in this study to asses the possibility of using the self-assembling properties of the DNA to prepare biofunctional SPR gold chips based on the immobilization of haptens, by hybridization with the complementary oligonucleotide strands possessing SH groups previously immobilized. The capture of the steroid-oligonucleotide conjugates and subsequent binding of the specific antibodies can be monitored on the sensogram due to variations produced on the refractive index on top of the gold chip. The resulting steroid-oligonucleotide conjugates retain the hybridization and specific binding properties of oligonucleotides and haptens as demonstrated by thermal denaturation experiments and surface plasmon resonance (SPR).
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Affiliation(s)
- Nuria Tort
- Applied Molecular Receptors Group (AMRg), Chemical and Biomolecular Nanotechnology Department, IQAC-CSIC, Jordi Girona, 18-26, 08034-Barcelona, Spain
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Fan L, Hu Y, Wang X, Zhang L, Li F, Han D, Li Z, Zhang Q, Wang Z, Niu L. Fluorescence resonance energy transfer quenching at the surface of graphene quantum dots for ultrasensitive detection of TNT. Talanta 2012; 101:192-7. [PMID: 23158311 DOI: 10.1016/j.talanta.2012.08.048] [Citation(s) in RCA: 172] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 08/27/2012] [Accepted: 08/28/2012] [Indexed: 12/20/2022]
Abstract
This paper for the first time reports a chemical method to prepare graphene quantum dots (GQDs) from GO. Water soluble and surface unmodified GQDs, serving as a novel, effective and simple fluorescent sensing platform for ultrasensitive detection of 2,4,6-trinitrotoluene (TNT) in solution by fluorescence resonance energy transfer (FRET) quenching. The fluorescent GQDs can specifically bind TNT species by the π-π stacking interaction between GQDs and aromatic rings. The resultant TNT bound at the GQDs surface can strongly suppress the fluorescence emission by the FRET from GQDs donor to the irradiative TNT acceptor through intermolecular polar-polar interactions at spatial proximity. The unmodified GQDs can sensitively detect down to ~0.495 ppm (2.2 μM) TNT with the use of only 1 mL of GQDs solution. The simple FRET-based GQDs reported here exhibit high and stable fluorescence. Eliminating further treatment or modification, this method simplifies and shortens the experimental process. It possesses good assembly flexibility and can thus find many applications in the detection of ultratrace analytes.
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Affiliation(s)
- Lishuang Fan
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
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Holford TR, Davis F, Higson SP. Recent trends in antibody based sensors. Biosens Bioelectron 2012; 34:12-24. [DOI: 10.1016/j.bios.2011.10.023] [Citation(s) in RCA: 203] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Revised: 10/06/2011] [Accepted: 10/13/2011] [Indexed: 12/29/2022]
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Fernández F, Sánchez-Baeza F, Marco MP. Nanogold probe enhanced Surface Plasmon Resonance immunosensor for improved detection of antibiotic residues. Biosens Bioelectron 2012; 34:151-8. [DOI: 10.1016/j.bios.2012.01.036] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2011] [Revised: 01/02/2012] [Accepted: 01/27/2012] [Indexed: 11/27/2022]
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Highly sensitive and selective odorant sensor using living cells expressing insect olfactory receptors. Proc Natl Acad Sci U S A 2010; 107:15340-4. [PMID: 20798064 DOI: 10.1073/pnas.1004334107] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
This paper describes a highly sensitive and selective chemical sensor using living cells (Xenopus laevis oocytes) within a portable fluidic device. We constructed an odorant sensor whose sensitivity is a few parts per billion in solution and can simultaneously distinguish different types of chemicals that have only a slight difference in double bond isomerism or functional group such as -OH, -CHO and -C(=O)-. We developed a semiautomatic method to install cells to the fluidic device and achieved stable and reproducible odorant sensing. In addition, we found that the sensor worked for multiple-target chemicals and can be integrated with a robotic system without any noise reduction systems. Our developed sensor is compact and easy to replace in the system. We believe that the sensor can potentially be incorporated into a portable system for monitoring environmental and physical conditions.
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Shiraki T, Tsuchiya Y, Shinkai S. Ratiometric Fluorescent Sensor for 2,4,6-Trinitrotoluene Designed Based on Energy Transfer between Size-different Quantum Dots. CHEM LETT 2010. [DOI: 10.1246/cl.2010.156] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Rich RL, Myszka DG. Grading the commercial optical biosensor literature-Class of 2008: 'The Mighty Binders'. J Mol Recognit 2010; 23:1-64. [PMID: 20017116 DOI: 10.1002/jmr.1004] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Optical biosensor technology continues to be the method of choice for label-free, real-time interaction analysis. But when it comes to improving the quality of the biosensor literature, education should be fundamental. Of the 1413 articles published in 2008, less than 30% would pass the requirements for high-school chemistry. To teach by example, we spotlight 10 papers that illustrate how to implement the technology properly. Then we grade every paper published in 2008 on a scale from A to F and outline what features make a biosensor article fabulous, middling or abysmal. To help improve the quality of published data, we focus on a few experimental, analysis and presentation mistakes that are alarmingly common. With the literature as a guide, we want to ensure that no user is left behind.
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Affiliation(s)
- Rebecca L Rich
- Center for Biomolecular Interaction Analysis, University of Utah, Salt Lake City, UT 84132, USA
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31
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Fluorescence-based sensing of 2,4,6-trinitrotoluene (TNT) using a multi-channeled poly(methyl methacrylate) (PMMA) microimmunosensor. SENSORS 2010; 10:876-89. [PMID: 22315573 PMCID: PMC3270874 DOI: 10.3390/s100100876] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2009] [Revised: 01/15/2010] [Accepted: 01/19/2010] [Indexed: 11/18/2022]
Abstract
Fluorescence immunoassays employing monoclonal antibodies directed against the explosive 2,4,6-trinitrotoluene (TNT) were conducted in a multi-channel microimmunosensor. The multi-channel microimmunosensor was prepared in poly (methyl methacrylate) (PMMA) via hot embossing from a brass molding tool. The multi-channeled microfluidic device was sol-gel coated to generate a siloxane surface that provided a scaffold for antibody immobilization. AlexaFluor-cadaverine-trinitrobenzene (AlexaFluor-Cad-TNB) was used as the reporter molecule in a displacement immunoassay. The limit of detection was 1–10 ng/mL (ppb) with a linear dynamic range that covered three orders of magnitude. In addition, antibody crossreactivity was investigated using hexahydro-1,3,5-triazine (RDX), HMX, 2,4-dinitrotoluene (DNT), 4-nitrotoluene (4-NT) and 2-amino-4,6-DNT.
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Tang L, Feng H, Cheng J, Li J. Uniform and rich-wrinkled electrophoretic deposited graphene film: a robust electrochemical platform for TNT sensing. Chem Commun (Camb) 2010; 46:5882-4. [DOI: 10.1039/c0cc01212b] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Basova EY, Goryacheva IY, Mikhirev DA, Rusanova TY, Burmistrova NA, Kerkaert B, Cucu T, De Saeger S, De Meulenaer B. Rapid method for qualitative detection of in environmental samples. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2009; 1:170-176. [PMID: 32938054 DOI: 10.1039/b9ay00144a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A gel-based immunoassay that can be used for the detection of 2,4,6-trinitrotoluene (TNT) in water samples was developed. Four polyclonal antibodies were generated in chickens using TNT derivatives. The assay was based on the immunoaffinity preconcentration and immuno-enzyme analysis of TNT in the gel. The results of the assay, assessed by color development, were evaluated visually and also by using a flatbed scanner and subsequent digital processing of the scanned gel. The most sensitive color mode, parameter S (saturation, HSB mode), was used for the immunoassay optimization and evaluation of the results. The immunoassays with the best parameters were optimized and characterized. A cut-off level of 5 µg TNT L-1 was reached for water samples. It was shown that tap and environmental water samples could be analyzed directly, without sample preparation and dilution. The developed test is acceptable for use in an on-site field test to provide rapid (about 15 min for six samples), qualitative and reliable results for making environmental decisions such as identifying "hot spots", monitoring of military and terrorist activities, and selecting of site samples for laboratory analysis.
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Affiliation(s)
- Evgenia Yu Basova
- Department of Common and Inorganic Chemistry, Chemistry Institute, Saratov State University, Astrakhanskaya 83, 410012, Saratov, Russia.
| | - Irina Yu Goryacheva
- Department of Common and Inorganic Chemistry, Chemistry Institute, Saratov State University, Astrakhanskaya 83, 410012, Saratov, Russia.
| | - Dmitry A Mikhirev
- Department of Common and Inorganic Chemistry, Chemistry Institute, Saratov State University, Astrakhanskaya 83, 410012, Saratov, Russia.
| | - Tatiana Yu Rusanova
- Department of Common and Inorganic Chemistry, Chemistry Institute, Saratov State University, Astrakhanskaya 83, 410012, Saratov, Russia.
| | - Natalia A Burmistrova
- Department of Common and Inorganic Chemistry, Chemistry Institute, Saratov State University, Astrakhanskaya 83, 410012, Saratov, Russia.
| | - Barbara Kerkaert
- Research Group Food Chemistry and Human Nutrition, Department of Food Safety and Food Quality, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
| | - Tania Cucu
- Research Group Food Chemistry and Human Nutrition, Department of Food Safety and Food Quality, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
| | - Sarah De Saeger
- Laboratory of Food Analysis, Department of Bioanalysis, Faculty of Pharmaceutical Sciences, Ghent University, Harelbekestraat 72, B-9000, Ghent, Belgium
| | - Bruno De Meulenaer
- Research Group Food Chemistry and Human Nutrition, Department of Food Safety and Food Quality, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
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Dudak FC, Boyaci IH. Rapid and label-free bacteria detection by surface plasmon resonance (SPR) biosensors. Biotechnol J 2009; 4:1003-11. [PMID: 19288516 DOI: 10.1002/biot.200800316] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Surface Plasmon Resonance (SPR) biosensor technology has been successfully used for the detection of various analytes such as proteins, drugs, DNA, and microorganisms. SPR-based immunosensors that coupled with a specific antigen-antibody reaction, have become a promising tool for the quantification of bacteria as it offers sensitive, specific, rapid, and label-free detection. In this paper, we review the important issues in the development of SPR-based immunoassays for bacteria detection, concentrating on instrumentation, surface functionalization, liquid handling, and surface regeneration. In addition, this review touches on the recent advances in SPR biosensing for sensitivity enhancement.
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Affiliation(s)
- Fahriye Ceyda Dudak
- Department of Food Engineering, Hacettepe University, Beytepe, Ankara, Turkey
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Cash KJ, Ricci F, Plaxco KW. A general electrochemical method for label-free screening of protein-small molecule interactions. Chem Commun (Camb) 2009:6222-4. [PMID: 19826675 DOI: 10.1039/b911558g] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we report a versatile method by which the interaction between a protein and a small molecule, and the disruption of that interaction by competition with other small molecules, can be monitored electrochemically directly in complex sample matrices.
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Affiliation(s)
- Kevin J Cash
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
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Riskin M, Tel-Vered R, Lioubashevski O, Willner I. Ultrasensitive Surface Plasmon Resonance Detection of Trinitrotoluene by a Bis-aniline-Cross-Linked Au Nanoparticles Composite. J Am Chem Soc 2009; 131:7368-78. [DOI: 10.1021/ja9001212] [Citation(s) in RCA: 210] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael Riskin
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Ran Tel-Vered
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Oleg Lioubashevski
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Itamar Willner
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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A self-assembled fusion protein-based surface plasmon resonance biosensor for rapid diagnosis of severe acute respiratory syndrome. Talanta 2009; 79:295-301. [PMID: 19559881 PMCID: PMC7111798 DOI: 10.1016/j.talanta.2009.03.051] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2008] [Revised: 03/20/2009] [Accepted: 03/23/2009] [Indexed: 11/20/2022]
Abstract
A surface plasmon resonance (SPR)-based biosensor was developed for simple diagnosis of severe acute respiratory syndrome (SARS) using a protein created by genetically fusing gold binding polypeptides (GBPs) to a SARS coronaviral surface antigen (SCVme). The GBP domain of the fusion protein serves as an anchoring component onto the gold surface, exploiting the gold binding affinity of the domain, whereas the SCVme domain is a recognition element for anti-SCVme antibody, the target analyte in this study. SPR analysis indicated the fusion protein simply and strongly self-immobilized onto the gold surface, through GBP, without surface chemical modification, offering a stable and specific sensing platform for anti-SCVme detection. AFM and SPR imaging analyses demonstrated that anti-SCVme specifically bound to the fusion protein immobilized onto the gold-micropatterned chip, implying that appropriate orientation of bound fusion protein by GBP resulted in optimal exposure of the SCVme domain to the assay solution, resulting in efficient capture of anti-SCVme antibody. The best packing density of the fusion protein onto the SPR chip was achieved at the concentration of 10 μg mL−1; this density showed the highest detection response (906 RU) for anti-SCVme. The fusion protein-coated SPR chip at the best packing density had a lower limit of detection of 200 ng mL−1 anti-SCVme within 10 min and also allowed selective detection of anti-SCVme with significantly low responses for non-specific mouse IgG at all tested concentrations. The fusion protein provides a simple and effective method for construction of SPR sensing platforms permitting sensitive and selective detection of anti-SCVme antibody.
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Mitchell JS, Lowe TE. Ultrasensitive detection of testosterone using conjugate linker technology in a nanoparticle-enhanced surface plasmon resonance biosensor. Biosens Bioelectron 2008; 24:2177-83. [PMID: 19117747 DOI: 10.1016/j.bios.2008.11.018] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2008] [Revised: 11/07/2008] [Accepted: 11/20/2008] [Indexed: 11/16/2022]
Abstract
A rationally designed oligoethylene glycol linker conjugate to testosterone was synthesised and covalently immobilized on a surface plasmon resonance (SPR) biosensor surface. The sensing surface was stable for more than 330 binding and regeneration cycles allowing a high degree of re-use. This surface was then used in the development of an ultrasensitive immunobiosensor system for testosterone in buffer utilizing both secondary antibody and gold nanoparticle signal enhancement. The mechanism for the increased sensitivity results from increased binding mass and a gold plasmon coupling effect. The addition of a secondary antibody with an attached gold nanoparticle increased the signal sensitivity of the assay 12.5-fold compared with primary antibody alone. In the enhanced format the assay had limits of detection (LOD) of 3.7 pgml(-1) with standard in running buffer, and 15.4 pgml(-1) in a stripped human saliva matrix. This immunobiosensor system has sufficient sensitivity to measure testosterone across the broad physiologically relevant range in male saliva (29-290 pgml(-1)) in under 13 min allowing monitoring of testosterone in near real-time.
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Affiliation(s)
- John S Mitchell
- Health and Food Group, The Horticulture and Food Research Institute of New Zealand Ltd., East Street Private Bag 3123, Hamilton, New Zealand
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