Chemoselective ligation assisted DNA walker for analysis of double targets

Chemoselective ligation assisted DNA walker with input and output of double signals, has been constructed through simultaneous assistance of oxime chemistry and alkyne-azide cycloaddition. The constructed DNA walker has been further developed as a biosensor with lipopolysaccharide (LPS) and 5-hydroxymethyl-2-furaldehyde (HMF) as targets. The biosensor owns one-to-one mapping functionality and can sensitively distinguish all cases of two targets through the unique output signal feature. Moreover, the biosensor can simultaneously analyze LPS and HMF. This work provides a new insight for analysis of double targets based on chemoselective ligation assisted DNA walker.

Automated summary

A chemoselective ligation assisted DNA walker with input and output of double signals has been developed using oxime chemistry and alkyne-azide cycloaddition. This biosensor, designed for lipopolysaccharide (LPS) and 5-hydroxymethyl-2-furaldehyde (HMF) targets, can sensitively differentiate and analyze both targets with one-to-one mapping functionality. This work offers a new perspective on analyzing double targets based on chemoselective ligation assisted DNA walker.