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Journal Article
Research Support, Non-U.S. Gov't
Linear Chain Formation of Split-Aptamer Dimers on Surfaces Triggered by Adenosine.
Langmuir : the ACS Journal of Surfaces and Colloids 2017 November 8
The detection of small molecules impacts various fields; however, their small size and low concentration are usually the cause of limitations in their detection. Thus, the need for biosensors with appropriate probes and signal amplification strategies is required. Aptamers are appropriate probes selected specifically against small targets such as adenosine. The possibility to split aptamers in parts led to original amplification strategies based on sandwich assays. By combining the self-assembling of oligonucleotide dimers with split-aptamer dangling ends and a surface plasmon resonance imaging technique, we developed an original amplification approach based on linear chain formation in the presence of the adenosine target. In this article, on the basis of sequence engineering, we analyzed its performance and the effect of the probe grafting density on the length of the chains formed at the surface of the biosensor.
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