1
|
Sengel TY, Celik EG, Aydogan C, Gumus ZP, Ilktac R, Aydindogan E, Ciftci M, Aldemir E, Coskunol H, Timur S, Yagci Y. A Functional Platform for the Detection of JWH-073 as a Model for Synthetic Cannabinoids. ChemElectroChem 2018. [DOI: 10.1002/celc.201800015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Tulay Yilmaz Sengel
- Department of Biochemistry, Faculty of Science; Ege University; 35100 Bornova, Izmir Turkey
| | - Emine Guler Celik
- Department of Biochemistry, Faculty of Science; Ege University; 35100 Bornova, Izmir Turkey
| | - Cansu Aydogan
- Department of Chemistry, Faculty of Science and Letters; Istanbul Technical University; 34469, Maslak Istanbul Turkey
| | - Zinar Pinar Gumus
- Institute of Drug Abuse, Toxicology & Pharmaceutical Sciences; Ege University; 35100 Bornova, Izmir Turkey
- Central Research Testing and Analysis Laboratory Research and Application Center; Ege University; 35100 Bornova, Izmir Turkey
| | - Raif Ilktac
- Central Research Testing and Analysis Laboratory Research and Application Center; Ege University; 35100 Bornova, Izmir Turkey
| | - Eda Aydindogan
- Department of Biochemistry, Faculty of Science; Ege University; 35100 Bornova, Izmir Turkey
| | - Mustafa Ciftci
- Department of Chemistry, Faculty of Science and Letters; Istanbul Technical University; 34469, Maslak Istanbul Turkey
| | - Ebru Aldemir
- Institute of Drug Abuse, Toxicology & Pharmaceutical Sciences; Ege University; 35100 Bornova, Izmir Turkey
| | - Hakan Coskunol
- Ege University, Faculty of Medicine, Addiction Treatment Center; 35100 Bornova, Izmir/ Turkey
| | - Suna Timur
- Department of Biochemistry, Faculty of Science; Ege University; 35100 Bornova, Izmir Turkey
- Central Research Testing and Analysis Laboratory Research and Application Center; Ege University; 35100 Bornova, Izmir Turkey
| | - Yusuf Yagci
- Department of Chemistry, Faculty of Science and Letters; Istanbul Technical University; 34469, Maslak Istanbul Turkey
- King Abdulaziz University, Faculty of Science, Chemistry Department; Jeddah/ Saudi Arabia
| |
Collapse
|
2
|
Suárez-Pantaleón C, Mercader JV, Agulló C, Abad-Somovilla A, Abad-Fuentes A. Forchlorfenuron-mimicking haptens: from immunogen design to antibody characterization by hierarchical clustering analysis. Org Biomol Chem 2011; 9:4863-72. [PMID: 21562652 DOI: 10.1039/c1ob05190c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
To obtain highly-specific and selective forchlorfenuron binders, a collection of functionalized derivatives with different spacer arm locations and lengths was prepared. By immunization with target-mimicking haptens, a large battery of monoclonal and polyclonal antibodies against this synthetic cell regulator was produced and exhaustively characterized in two immunoassay formats using homologous and heterologous conjugates. Antibodies with IC(50) values lower than 0.3 nM were successfully raised from the prepared immunogens, thus evidencing the efficacy of the explored strategies. In order to identify significant epitopes in the antibody-antigen interaction, a series of new chemical forchlorfenuron analogues, with slight modifications at both rings of the target molecule, were synthesized and evaluated in competitive assays. As a novel approach in hapten recognition studies, data processing was performed by computational classification methods based on hierarchical clustering. This strategy was shown to be highly valuable for a straightforward profiling of antibodies according to analogue recognition patterns. A relationship could be established between the antigen binding properties of antibodies and the structure of the immunogen. Whereas antibodies with equivalent affinities had been obtained from all of the derivatives, their specificity was found to be largely influenced by the differential exposition of the molecule to the immune system.
Collapse
Affiliation(s)
- Celia Suárez-Pantaleón
- Department of Biotechnology, IATA-CSIC, Agustí Escardino 7, 46980, Paterna, València, Spain
| | | | | | | | | |
Collapse
|
3
|
Du XJ, Wu YN, Zhang WW, Dong F, Wang S. Construction and quality examination of murine naive T7 phage display antibody library. FOOD AGR IMMUNOL 2010. [DOI: 10.1080/09540100903414106] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
|
4
|
Production of ultrasensitive generic monoclonal antibodies against major aflatoxins using a modified two-step screening procedure. Anal Chim Acta 2009; 636:63-9. [DOI: 10.1016/j.aca.2009.01.010] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2008] [Revised: 01/05/2009] [Accepted: 01/07/2009] [Indexed: 11/18/2022]
|
5
|
Hapten synthesis and enzyme-linked immunosorbent assay for phosmet residues: assay optimization and investigation of matrix effects from different food samples. Anal Bioanal Chem 2009; 393:2001-8. [DOI: 10.1007/s00216-009-2684-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2008] [Revised: 01/30/2009] [Accepted: 02/04/2009] [Indexed: 11/27/2022]
|
6
|
Suárez-Pantaleón C, Mercader JV, Agulló C, Abad-Somovilla A, Abad-Fuentes A. Production and characterization of monoclonal and polyclonal antibodies to forchlorfenuron. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:11122-11131. [PMID: 18989973 DOI: 10.1021/jf802261x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The development of immunoassays for the detection of the plant growth regulator forchlorfenuron (CPPU) is described. To achieve that purpose, a set of CPPU derivatives has been obtained by the previous synthesis of the adequate p-aminophenyl alkanoic acid. Protein conjugates of these compounds have been used as immunogens to produce rabbit polyclonal antibodies and a collection of mouse monoclonal antibodies. Additionally, a battery of structural analogues of the target analyte has been synthesized and used for the characterization of antibody binding. This strategy has demonstrated that most antibodies followed Landsteiner's principle, although some monoclonal antibodies showing important deviations from this behavior have also been found. Finally, different assay formats have been developed with a variety of antibodies and conjugates, and a rapid procedure has been optimized for the indirect ELISA format using monoclonal and polyclonal antibodies. In the indirect competitive ELISA, assay IC50 values for CPPU below 0.5 nM were found with LODs as low as 0.013 nM.
Collapse
Affiliation(s)
- Celia Suárez-Pantaleón
- Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de Alimentos, València, Spain
| | | | | | | | | |
Collapse
|
7
|
Mercader JV, Suárez-Pantaleón C, Agulló C, Abad-Somovilla A, Abad-Fuentes A. Production and characterization of monoclonal antibodies specific to the strobilurin pesticide pyraclostrobin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:7682-7690. [PMID: 18690684 DOI: 10.1021/jf801340u] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Strobilurin fungicides are nowadays among the most important fungicides in the market of active agrochemicals. Pyraclostrobin, which belongs to the last generation of this family of molecules, shows a broader antifungal activity spectrum and higher efficiency and security profiles than previous fungicides. This paper describes the synthesis of functionalized haptens, the production of monoclonal antibodies, and the development of enzyme-linked immunosorbent assays (ELISA) for the detection of pyraclostrobin. A conformational analysis of hapten structure was performed, which provided relevant data concerning the length of the spacer arm. A very useful strategy has been followed for the screening of hybridomas, leading to the selection of a panel of high-affinity monoclonal antibodies to pyraclostrobin. Moreover, different immunoassays have been characterized using the conjugate-coated indirect ELISA format, and limits of detection below 0.1 microg/L have been obtained. Also, a simplified one-step procedure has been carried out with two indirect assays. Finally, these results have been compared with the performance of the same antibodies in the antibody-coated direct ELISA format.
Collapse
Affiliation(s)
- Josep V Mercader
- Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de Alimentos, Consejo Superior de Investigaciones Científicas, P.O. Box 73, 46100 Burjassot, València, Spain
| | | | | | | | | |
Collapse
|
8
|
Mercader JV, Suárez-Pantaleón C, Agulló C, Abad-Somovilla A, Abad-Fuentes A. Hapten synthesis and monoclonal antibody-based immunoassay development for the detection of the fungicide kresoxim-methyl. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:1545-1552. [PMID: 18251498 DOI: 10.1021/jf073039x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Strobilurin fungicides have been increasingly used for fungus pest control since they were introduced in 1996. For pesticide residue detection, immunoassays constitute nowadays a valuable approach. This paper describes the synthesis of functionalized haptens of kresoxim-methyl, the production of monoclonal antibodies, and the development of enzyme-linked immunosorbent assays. On the one hand, a two-step conjugate-coated immunoassay was optimized using extended or short incubation times, with limits of detection of 0.4 ng/mL for the extended assay and 0.3 ng/mL for the rapid assay. On the other hand, an immunoassay was optimized following a procedure consisting of just one incubation step. This one-step assay had a limit of detection of 0.4 ng/mL. All of these assays showed a similar performance, with sensitivities well below common maximum residue limits for this pesticide (50 microg/kg) and lower than the detection limits of the usual chromatographic detection methods.
Collapse
Affiliation(s)
- Josep V Mercader
- Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de Alimentos, Consejo Superior de Investigaciones Científicas, P.O. Box 73, 46100 Burjassot, València, Spain
| | | | | | | | | |
Collapse
|
9
|
Ivanov A, Evtugyn G, Budnikov H, Girotti S, Ghini S, Ferri E, Montoya A, Mercader JV. Amperometric Immunoassay of Azinphos‐Methyl in Water and Honeybees Based on Indirect Competitive ELISA. ANAL LETT 2008. [DOI: 10.1080/00032710701484426] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
10
|
Comparison of hybridoma screening methods for the efficient detection of high-affinity hapten-specific monoclonal antibodies. J Immunol Methods 2008; 329:184-93. [DOI: 10.1016/j.jim.2007.10.010] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2007] [Revised: 09/24/2007] [Accepted: 10/19/2007] [Indexed: 11/19/2022]
|
11
|
Comparative study of three immunoassays based on monoclonal antibodies for detection of the pesticide parathion-methyl in real samples. Anal Chim Acta 2004. [DOI: 10.1016/j.aca.2004.01.047] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
12
|
Sardinha JPM, Gil MH, Mercader JV, Montoya A. Enzyme-linked immunofiltration assay used in the screening of solid supports and immunoreagents for the development of an azinphos-methyl flow immunosensor. J Immunol Methods 2002; 260:173-82. [PMID: 11792387 DOI: 10.1016/s0022-1759(01)00541-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Azinphos-methyl (AM), O,O-dimethyl S-[(4-oxo-1,2,3-benzotriazin-3(4H)-yl)methyl] phosphorodithioate, is a dithiophosphorous insecticide extensively used for the control of fruit culture pests. In this work the ELIFA system, initially developed and marketed to substitute conventional ELISA methods, was used for the screening of supports and immunoreagents in the development of a flow immunosensor to AM. The objective was to find the optimal antibody concentration, support quantity and enzymatic tracer concentration to develop a sensitive and reusable immunosensor. The influence of chitosan as protein stabilizing agent was also investigated. We observed that, on the basis of immunosorbent characterization, chitosan-modified silica with immobilized LIB-MFH14 monoclonal antibody (MAb) showed the best sensitivity, with a I(50) value of 6 nM AM. All of the immobilized MAbs either in alkylaminated or chitosan-modified silica showed I(50) values between 10 and 36 nM. Regarding the regeneration capability, the best desorption agent tested was 0.1 M glycine/HCl, pH 2.0, performing in most cases a 100% desorption after just one wash and maintaining the antibody activity even after 20 cycles of regeneration. The chitosan-modified silica seemed to be the best support for this purpose.
Collapse
Affiliation(s)
- J P M Sardinha
- Departamento de Engenharia Química da Universidade de Coimbra, Polo II, Pinhal de Marrocos, 3030-290, Coimbra, Portugal.
| | | | | | | |
Collapse
|