Engineering self-contained DNA circuit for proximity recognition and localized signal amplification of target biomolecules.

ABSTRACT: Biomolecular interactions have important cellular implications, however, a simple method for the sensing of such proximal events is lacking in the current molecular toolbox. We designed a dynamic DNA circuit capable of recognizing targets in close proximity to initiate a pre-programmed signal transduction process resulting in localized signal amplification. The entire circuit was engineered to be self-contained, i.e. it can self-assemble onto individual target molecules autonomously and form localized signal with minimal cross-talk. α-thrombin was used as a model protein to evaluate the performance of the individual modules and the overall circuit for proximity interaction under physiologically relevant buffer condition. The circuit achieved good selectivity in presence of non-specific pro

SUBMITTER: Ang YS 

PROVIDER: S-EPMC4132759 | biostudies-literature | 2014 Aug

REPOSITORIES: biostudies-literature