Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 132, Issue 41, Pages 14346-14348Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja104998m
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Funding
- U.S. Army Research Office [DAAA 19-03-D-0004]
- DARPA [00264048]
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In a traditional sandwich assay, a DNA target hybridizes to a single copy of the signal probe. Here we employ a modified signal probe containing a methylene blue (a redox moiety) label and a sticky end. When a DNA target hybridizes this signal probe, the sticky end remains free to hybridize another target leading to the creation of a supersandwich structure containing multiple labels. This leads to large signal amplification upon monitoring by voltammetry.
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