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Gui Y, Zhao Y, Liu P, Wang Y, Mao X, Peng C, Hammock BD, Zhang C. Colorimetric and Reverse Fluorescence Dual-Signal Readout Immunochromatographic Assay for the Sensitive Determination of Sibutramine. ACS OMEGA 2024; 9:7075-7084. [PMID: 38371773 PMCID: PMC10870287 DOI: 10.1021/acsomega.3c09050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/24/2023] [Accepted: 01/15/2024] [Indexed: 02/20/2024]
Abstract
Later flow immunochromatographic assay has been widely used in clinical, environmental, and other diagnostic applications owing to its high sensitivity and throughput. However, most immunoassays operate in the "turn-off" mode for detecting targets of low molecular weight. The signal intensity decreases as the analyte concentration increases, which poses a challenge for achieving ultrasensitive detection at low concentrations and is counterintuitive to new users. In this work, a fluorometric immunochromatographic assay (FICA) is developed to simultaneously read "turn-on" fluorescent and "turn-off" colorimetric signals, where ZnCdSe/ZnS quantum dots act as fluorescence donors and gold nanoparticles (AuNPs) act as quenchers. The fluorescent signal (excitation/emission wavelengths of 365/525 nm) is positively correlated with analytes' concentration. Taking sibutramine (SBT) as the analysis target, the visual limit of detection for SBT reached 3.9 ng/mL, and the limit of Quantitation was 5.0 ng/mg in spiked samples. The developed FICA achieves a high sensitivity in SBT detection, which is much lower than that of the colloidal gold-based immunochromatographic assay. This dual-function detection mode has great potential to be used as a rapid on-site semiquantitative method, providing an alternative mode for the determination of low levels of target analytes.
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Affiliation(s)
- Yun Gui
- State
Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
- Jiangsu
Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation
Base of Ministry of Science and Technology, Institute of Food Safety
and Nutrition, Jiangsu Academy of Agricultural
Sciences, Nanjing 210014, P. R. China
| | - Yun Zhao
- Jiangsu
Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation
Base of Ministry of Science and Technology, Institute of Food Safety
and Nutrition, Jiangsu Academy of Agricultural
Sciences, Nanjing 210014, P. R. China
- State
Key Lab of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
| | - Pengyan Liu
- Jiangsu
Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation
Base of Ministry of Science and Technology, Institute of Food Safety
and Nutrition, Jiangsu Academy of Agricultural
Sciences, Nanjing 210014, P. R. China
| | - Yulong Wang
- Jiangsu
Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation
Base of Ministry of Science and Technology, Institute of Food Safety
and Nutrition, Jiangsu Academy of Agricultural
Sciences, Nanjing 210014, P. R. China
| | - Xinxin Mao
- Jiangsu
Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation
Base of Ministry of Science and Technology, Institute of Food Safety
and Nutrition, Jiangsu Academy of Agricultural
Sciences, Nanjing 210014, P. R. China
- College
of Plant Protection, Nanjing Agricultural
University, Nanjing 210095, P. R. China
| | - Chifang Peng
- State
Key Lab of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
| | - Bruce D. Hammock
- Department
of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Cunzheng Zhang
- State
Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
- Jiangsu
Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation
Base of Ministry of Science and Technology, Institute of Food Safety
and Nutrition, Jiangsu Academy of Agricultural
Sciences, Nanjing 210014, P. R. China
- College
of Plant Protection, Nanjing Agricultural
University, Nanjing 210095, P. R. China
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Jones NS, Comparin JH. Interpol review of controlled substances 2016-2019. Forensic Sci Int Synerg 2020; 2:608-669. [PMID: 33385148 PMCID: PMC7770462 DOI: 10.1016/j.fsisyn.2020.01.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 01/23/2020] [Indexed: 12/14/2022]
Abstract
This review paper covers the forensic-relevant literature in controlled substances from 2016 to 2019 as a part of the 19th Interpol International Forensic Science Managers Symposium. The review papers are also available at the Interpol website at: https://www.interpol.int/content/download/14458/file/Interpol%20Review%20Papers%202019.pdf.
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Affiliation(s)
- Nicole S. Jones
- RTI International, Applied Justice Research Division, Center for Forensic Sciences, 3040 E. Cornwallis Road, Research Triangle Park, NC, 22709-2194, USA
| | - Jeffrey H. Comparin
- United States Drug Enforcement Administration, Special Testing and Research Laboratory, USA
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