Thioflavin T as a fluorescence light-up probe for G4 formation.
Thioflavin T as a fluorescence light-up probe for G4 formation.
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DOI:
10.1093/nar/gku111
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发表时间:
2014-04
影响因子:
14.9
通讯作者:
Mergny JL
中科院分区:
文献类型:
--
作者:
Renaud de la Faverie A;Guédin A;Bedrat A;Yatsunyk LA;Mergny JL
Thioflavin T (ThT) becomes fluorescent in the presence of the G-quadruplex structure such as that formed by the human telomeric motif. In this report, we extend and generalize these observations and show that this dye may be used as a convenient and specific quadruplex probe. In the presence of most, but not all, G4-forming sequences, we observed a large increase in ThT fluorescence emission, whereas the presence of control duplexes and single strands had a more limited effect on emission. This differential behavior allowed us to design a high-throughput assay to detect G4 formation. Hundreds of different oligonucleotides may be tested in parallel for G4 formation with a simple fluorescence plate reader. We applied this technique to a family of aptamers not previously recognized as G4-forming sequences and demonstrated that ThT fluorescence signal may be used to predict G4 formation.
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