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Cao H, Liang D, Tang K, Sun Y, Xu Y, Miao M, Zhao Y. SERS and MRS signals engineered dual-mode aptasensor for simultaneous distinguishment of aflatoxin subtypes. JOURNAL OF HAZARDOUS MATERIALS 2024; 462:132810. [PMID: 37871438 DOI: 10.1016/j.jhazmat.2023.132810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 10/25/2023]
Abstract
The accurate monitoring of aflatoxin subtypes is vitally important for food safety. Herein, a dual-mode aptasensor with surface-enhanced Raman scattering (SERS) and magnetic relaxation switching (MRS) signals is developed for the detection of aflatoxin B1, B2 and M1 (i.e. AFB1, AFB2 and AFM1). Au-Ag Janus NPs and Au-mushroom NPs are prepared and show intense and non-interfering SERS peaks without the additional modification of Raman molecules, and are utilized as SERS nanotags for the distinguishment of AFB1 and AFB2. Fe3O4@Au NPs functionalized by AFM1 aptamers are applied as MRS nanoprobes for the monitoring of AFM1. Aptamers engineered SERS nanotags and MRS nanoprobes are assembled, and show strong SERS performances and high transverse relaxation time (T2). AFB1, AFB2 and AFM1 induce the separation of SERS nanotags from the assemblies and the dispersion of Fe3O4@Au NPs, resulting in the decrease of SERS signals at 1278 cm-1 and 1000 cm-1 as well as the reduction of T2 values. The dual-mode but three kinds of detection signals don't interfere with each other and exhibit a significant linear relationship with the concentration of targets. This platform provides a high throughput monitoring strategy for the simultaneous analysis of different subtypes of mycotoxin.
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Affiliation(s)
- Honghui Cao
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, China; Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Dan Liang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Kaizhen Tang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Yu Sun
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Yinjuan Xu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Ming Miao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, Jiangsu, China.
| | - Yuan Zhao
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China.
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pH and redox dual responsive carrier-free anticancer drug nanoparticles for targeted delivery and synergistic therapy. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2019; 20:102008. [DOI: 10.1016/j.nano.2019.04.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 10/10/2018] [Accepted: 04/29/2019] [Indexed: 01/11/2023]
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Fu J, Zhang Z, Li G. Progress on the development of DNA-mediated metal nanomaterials for environmental and biological analysis. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.10.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Sergiienko S, Moor K, Gudun K, Yelemessova Z, Bukasov R. Nanoparticle–nanoparticle vs. nanoparticle–substrate hot spot contributions to the SERS signal: studying Raman labelled monomers, dimers and trimers. Phys Chem Chem Phys 2017; 19:4478-4487. [DOI: 10.1039/c6cp08254h] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We used a combination of Raman microscopy, AFM and TEM to quantify the influence of dimerization (and trimerisation to some extend) on the SERS signal for gold and silver nanoparticles modified with Raman reporters and situated on Au, Ag, Al films and Si wafer.
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Affiliation(s)
- Sergii Sergiienko
- Department of Chemistry
- School of Science and Technology
- Nazarbayev University
- Astana 010000
- Kazakhstan
| | - Kamila Moor
- Department of Chemistry
- School of Science and Technology
- Nazarbayev University
- Astana 010000
- Kazakhstan
| | - Kristina Gudun
- Department of Chemistry
- School of Science and Technology
- Nazarbayev University
- Astana 010000
- Kazakhstan
| | - Zarina Yelemessova
- Department of Chemistry
- School of Science and Technology
- Nazarbayev University
- Astana 010000
- Kazakhstan
| | - Rostislav Bukasov
- Department of Chemistry
- School of Science and Technology
- Nazarbayev University
- Astana 010000
- Kazakhstan
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