期刊
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
卷 28, 期 3, 页码 292-306出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.trac.2008.11.012
关键词
Colorimetry; Electrochemiluminescence; Fluorescence; Fluorescence resonance energy transfer; Gold nanoparticle; Molecular beacon; Molecular switch; Nucleic acid; Quantum dot; Silver nanoparticle
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Ontario Ministry of Training, Colleges and Universities
- University of Toronto
This review discusses the application of quantum dots (QDs), gold nanoparticles (NPs), and molecular switches in optical nucleic-acid diagnostics. The size-dependent optical properties of nanoscale materials, as well as the ability to tailor both material and surface composition of NPs, create exciting new possibilities in nucleic-acid analyses. Similarly, molecular assemblies of nucleic acids that generate on-off responses at the single-molecule (or particle) level offer significant advantages in diagnostics. Areas of interest in this review include: 1) QDs and fluorescence-in-situ-hybridization, microarrays, fluorescence resonance energy transfer and signal enhancement; 2) gold or silver NPs and colorimetric detection, fluorescence quenching, chemiluminescence, and electrochemiluminescence; and, 3) advances in the design of molecular beacons, hairpin probes and other diagnostic nucleic-acid constructs. We provide brief perspectives on the potential application of lanthanide NPs as optical probes, and the potential of nucleic-acid diagnostics in living cells. (C) 2008 Elsevier Ltd. All rights reserved.
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