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301
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Zhang X, Wu D, Liu Z, Cai S, Zhao Y, Chen M, Xia Y, Li C, Zhang J, Chen J. An ultrasensitive label-free electrochemical biosensor for microRNA-21 detection based on a 2′-O-methyl modified DNAzyme and duplex-specific nuclease assisted target recycling. Chem Commun (Camb) 2014; 50:12375-7. [DOI: 10.1039/c4cc05541a] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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302
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Zhang P, Wang J, Huang H, Chen H, Guan R, Chen Y, Ji L, Chao H. RuNH2@AuNPs as two-photon luminescent probes for thiols in living cells and tissues. Biomaterials 2014; 35:9003-11. [PMID: 25103232 DOI: 10.1016/j.biomaterials.2014.07.021] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 07/17/2014] [Indexed: 12/15/2022]
Abstract
Two-photon luminescent sensors have emerged as promising molecular tools for imaging biomolecules in living systems. Here, we present hybrid gold nanocomposites RuNH2@AuNPs as luminescence off-on probes in response to thiols, which can replace the Ru(II) complexes on the surfaces of the AuNPs to release the luminophore RuNH2. The liberated Ru(II) complexes exhibit strong two-photon luminescence and a large two-photon absorption cross section by using the two-photon excitation wavelength at 800 nm. Furthermore, the probe responses toward thiols with high selectivity and insensitivity to pH over the biologically relevant pH range. This two-photon probe can visualize biological thiols levels in live cells as well as in living mouse tissues at depths of 80-170 μm by two-photon microscopy.
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Affiliation(s)
- Pingyu Zhang
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Jinquan Wang
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Huaiyi Huang
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Hongming Chen
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Ruilin Guan
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Yu Chen
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Liangnian Ji
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Hui Chao
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China.
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303
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Degliangeli F, Pompa PP, Fiammengo R. Nanotechnology-based strategies for the detection and quantification of microRNA. Chemistry 2014; 20:9476-92. [PMID: 24989446 DOI: 10.1002/chem.201402649] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
MicroRNAs (miRNAs) are important regulators of gene expression, and many pathological conditions, including cancer, are characterized by altered miRNA expression levels. Therefore, accurate and sensitive quantification of miRNAs may result in correct disease diagnosis establishing these small noncoding RNA transcripts as valuable biomarkers. Aiming at overcoming some limitations of conventional quantification strategies, nanotechnology is currently providing numerous significant alternatives to miRNA sensing. In this review an up-to-date account of nanotechnology-based strategies for miRNA detection and quantification is given. The topics covered are: nanoparticle-based approaches in solution, sensing based on nanostructured surfaces, combined nanoparticle/surface sensing approaches, and single-molecule approaches.
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Affiliation(s)
- Federica Degliangeli
- Center for Biomolecular Nanotechnologies@UniLe, Istituto Italiano di Tecnologia (IIT), Via Barsanti, 73010 Arnesano (Lecce) (Italy)
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304
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Liu H, Li L, Wang Q, Duan L, Tang B. Graphene Fluorescence Switch-Based Cooperative Amplification: A Sensitive and Accurate Method to Detection MicroRNA. Anal Chem 2014; 86:5487-93. [DOI: 10.1021/ac500752t] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Haiyun Liu
- College of Chemistry, Chemical
Engineering and Materials Science, Collaborative Innovation
Center of Functionalized Probes for Chemical Imaging, Key Laboratory
of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan, 250014 Shandong, People’s Republic of China
| | - Lu Li
- College of Chemistry, Chemical
Engineering and Materials Science, Collaborative Innovation
Center of Functionalized Probes for Chemical Imaging, Key Laboratory
of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan, 250014 Shandong, People’s Republic of China
| | - Qian Wang
- College of Chemistry, Chemical
Engineering and Materials Science, Collaborative Innovation
Center of Functionalized Probes for Chemical Imaging, Key Laboratory
of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan, 250014 Shandong, People’s Republic of China
| | - Lili Duan
- College of Chemistry, Chemical
Engineering and Materials Science, Collaborative Innovation
Center of Functionalized Probes for Chemical Imaging, Key Laboratory
of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan, 250014 Shandong, People’s Republic of China
| | - Bo Tang
- College of Chemistry, Chemical
Engineering and Materials Science, Collaborative Innovation
Center of Functionalized Probes for Chemical Imaging, Key Laboratory
of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan, 250014 Shandong, People’s Republic of China
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