DNA origami-based nano-hunter enriches low-abundance point mutations by targeting wild-type gene segments

ABSTRACT Point mutations can be used as biomarkers to perform diagnosis for diseases. In this study, a nanorobot for low-abundance point mutation enrichment was constructed using DNA origami. The novel design achieved limits of detection of 0.1% and 1% for synthesized DNA samples and clinical gene samples, respectively. Resettability was a key property of this method, which also involved a simpler process, lower cost and shorter detection duration than traditional enrichment methods. This novel DNA nanorobot may enable the detection of tumor markers, potentially facilitating early cancer diagnosis.