A smart DNA–gold nanoparticle probe for detecting single-base changes on the platform of a quartz crystal microbalance†
Abstract
A design of DNA–gold nanoparticle probe-fueled DNA strand displacements for detecting single-base changes on the platform of a quartz crystal microbalance with random sequences was developed. After optimizing and testing the detection system, it has been successfully applied to detect mutation of a realistic sequence associated with human cancer, thereby indicating that this method has potential applicability in general.