Journal
CHEMICAL SOCIETY REVIEWS
Volume 40, Issue 12, Pages 5815-5828Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1cs15025a
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An excitonic interaction caused by the H-aggregation of fluorescent dyes is a new type of useful photophysical process for fluorescence-controlled nucleic acid sensing. This critical review points out the recent advances in exciton-controlled hybridization-sensitive fluorescent oligonucleotide (ECHO) probes, which have a fluorescence-labeled nucleotide in which two molecules of thiazole orange or its derivatives are linked covalently. ECHO probes show absorption shift and emission switching depending on hybridization with the target nucleic acid. The hybridization-sensitive fluorescence emission of ECHO probes and the further modification of probes have made possible a variety of practical applications, such as multicolor RNA imaging in living cells and facile detection of gene polymorphism (144 references).
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