The robust detection of single nucleotide variants (SNVs) remains a key challenge for rapid and multiplexed diagnostics. Now it is shown that FARSIGHT, a computationally designed aptamer-based RNA switch, achieves rapid, enzyme-free genotyping via domino-like coupled strand-displacement reactions. These systems provide attomolar sensitivity when coupled with isothermal amplification, multiplexed SNV discrimination and lateral flow readout.
- Zhaoqing Yan
- Yudan Li
- Alexander A. Green
