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Deng J, Xu J, Ouyang M, Zou Z, Lei Y, Li J, Qing Z, Yang R. Target-triggered hairpin-free chain-branching growth of DNA dendrimers for contrast-enhanced imaging in living cells by avoiding signal dispersion. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.08.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Zhang Y, Li CW, Zhou L, Chen Z, Yi C. "Plug and Play" logic gate construction based on chemically triggered fluorescence switching of gold nanoparticles conjugated with Cy3-tagged aptamer. Mikrochim Acta 2020; 187:437. [PMID: 32647943 DOI: 10.1007/s00604-020-04421-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 06/30/2020] [Indexed: 11/29/2022]
Abstract
Gold nanoparticles (AuNPs) conjugated with Cy3-tagged aptamer which can specifically recognize chloramphenicol (CAP) (referred to as AuNPs-AptCAP) are described. CAP can trigger the configuration change of CAP binding aptamer, and thus switching the fluorescence of AuNPs-AptCAP through changing the efficiency of the fluorescence resonance energy transfer (FRET) system with Cy3 as donors and AuNPs as recipients. AuNPs-AptCAP exhibits a linear range of CAP concentrations from 26.0 to 277 μg L-1 with a limit of detection of 8.1 μg L-1 when Cy3 was excited at 530 nm and emission was measured at 570 nm. More importantly, AuNPs-AptCAP can be utilized as signal transducers for the build-up of a series of logic gates including YES, PASS 0, INH, NOT, PASS 1, and NAND. Utilizing the principle of a metal ion-mediated fluorescence switch together with a strong metal ion chelator, the fluorescence of AuNPs-AptCAP could be modulated by adding metal ions and EDTA sequentially. Therefore, a "Plug and Play" logic system based on AuNPs-AptCAP has been realized by simply adding other components to create new logic functions. This work highlights the advantages of simple synthesis and facile fluorescence switching properties, which will provide useful knowledge for the establishment of molecular logic systems. Graphical abstract.
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Affiliation(s)
- Yali Zhang
- Key Laboratory of Sensing Technology and Biomedical Instruments (Guangdong Province), School of Biomedical Engineering, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Cheuk-Wing Li
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK
| | - Lefei Zhou
- Key Laboratory of Sensing Technology and Biomedical Instruments (Guangdong Province), School of Biomedical Engineering, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Zhanpeng Chen
- Key Laboratory of Sensing Technology and Biomedical Instruments (Guangdong Province), School of Biomedical Engineering, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Changqing Yi
- Key Laboratory of Sensing Technology and Biomedical Instruments (Guangdong Province), School of Biomedical Engineering, Sun Yat-Sen University, Guangzhou, 510006, China. .,Research Institute of Sun Yat-Sen University in Shenzhen, Shenzhen, 518057, China.
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Fang Y, Zhou L, Yang J, Zhao J, Zhang Y, Yi C. Multilevel, Dual-Readout Logic Operations Based on pH-Responsive Holmium(III)-Doped Carbon Nanodots. ACS APPLIED BIO MATERIALS 2020; 3:3761-3769. [DOI: 10.1021/acsabm.0c00356] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yaning Fang
- Key Laboratory of Sensing Technology and Biomedical Instruments (Guangdong Province), School of Biomedical Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Lefei Zhou
- Key Laboratory of Sensing Technology and Biomedical Instruments (Guangdong Province), School of Biomedical Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Jun Yang
- Guangdong Provincial People’s Hospital, Guangzhou 510080, China
| | - Junkai Zhao
- Key Laboratory of Sensing Technology and Biomedical Instruments (Guangdong Province), School of Biomedical Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Yali Zhang
- Key Laboratory of Sensing Technology and Biomedical Instruments (Guangdong Province), School of Biomedical Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Changqing Yi
- Key Laboratory of Sensing Technology and Biomedical Instruments (Guangdong Province), School of Biomedical Engineering, Sun Yat-sen University, Guangzhou 510006, China
- Research Institute of Sun Yat-sen University in Shenzhen, Shenzhen 518057, China
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Wang R, Lan L, Liu L, Cheng L. Asymmetric polymerase chain reaction and loop-mediated isothermal amplification (AP-LAMP) for ultrasensitive detection of microRNAs. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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5
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A label-free colorimetric detection of microRNA via G-quadruplex-based signal quenching strategy. Anal Chim Acta 2019; 1079:207-211. [DOI: 10.1016/j.aca.2019.06.063] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 06/24/2019] [Accepted: 06/30/2019] [Indexed: 11/19/2022]
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Ma Y, Chen J, Chen D, Xu Y, Zhang L, Dai Z, Zou X. Short-probe-based duplex-specific nuclease signal amplification strategy enables imaging of endogenous microRNAs in living cells with ultrahigh specificity. Talanta 2018; 186:256-264. [PMID: 29784358 DOI: 10.1016/j.talanta.2018.04.071] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/17/2018] [Accepted: 04/20/2018] [Indexed: 11/30/2022]
Abstract
Specific nucleic acids amplification at a constant and mild temperature is important for imaging assay of endogenous microRNAs (miRNAs) in living cells. Duplex-specific nuclease (DSN) is attractive in one-step isothermal assay of miRNA; however, its intrinsic limitations of low amplification specificity and high reaction temperature greatly restrict the application scope. Herein, we present a short-probe-based DSN signal amplification (spDSNSA) strategy enabling analysis of miRNAs at body temperature with significantly high specificity. From systematic investigation of amplification reaction on different types of DNA probes, we revealed that the annealing rate between probe and target miRNA greatly affects the dynamics of amplification process. By simply shortening the length of DNA probe, the spDSNSA remarkably improved specificity without loss of amplification efficiency at 37 °C. As a proof-of-concept, let-7a was sensitively detected by spDSNSA with a limit of detection down to 30 p.M., and a specificity 102 ‒ 104 folds higher than those of traditional DSNSA methods. The analysis of the let-7a in the lysates of A549 human lung cancer cells and BEAS-2B human lung normal bronchial epithelial cells exhibited well agreement with rt-qPCR method. Furthermore, the endogenous let-7a in A549 and BEAS-2B living cells was clearly imaged without damaging the original morphology of cells. The method provide a facile idea for extension of DNS related signal amplification strategies in the application in living cells and POCTs, and would pose a great impact on the development of simple and rapid molecular diagnostic applications for short oligonucleotides.
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Affiliation(s)
- Yingjun Ma
- School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, PR China
| | - Jun Chen
- School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, PR China
| | - Danping Chen
- School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, PR China
| | - Yuzhi Xu
- School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, PR China
| | - Li Zhang
- School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, PR China
| | - Zong Dai
- School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, PR China.
| | - Xiaoyong Zou
- School of Chemistry, Sun Yat-Sen University, 135 Xingang West Road, Guangzhou 510275, PR China
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Chen J, Yin W, Ma Y, Yang H, Zhang Y, Xu M, Zheng X, Dai Z, Zou X. Imaging of intracellular-specific microRNA in tumor cells by symmetric exponential amplification-assisted fluorescence in situ hybridization. Chem Commun (Camb) 2018; 54:13981-13984. [DOI: 10.1039/c8cc08849g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A symmetric exponential amplification-assisted fluorescence in situ hybridization (SEXPAR-FISH) strategy was reported for imaging intracellular-specific microRNAs.
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Affiliation(s)
- Jun Chen
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Wen Yin
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Yingjun Ma
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Huihui Yang
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Yanfei Zhang
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Mengfei Xu
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Xuling Zheng
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Zong Dai
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
- Research Institute of Sun Yat-Sen University in Shenzhen
| | - Xiaoyong Zou
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
- Research Institute of Sun Yat-Sen University in Shenzhen
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Zhu Y, Lin W, Zhang W, Feng Y, Wu Z, Chen L, Xie Z. PEGylated BODIPY assembling fluorescent nanoparticles for photodynamic therapy. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2017.06.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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