Utilizing a gold enhancement process after inducing electrostatic interaction between positively charged gold nanoparticles and negatively charged target DNA hybridized to neutral PNA capture probes, a new method for label-free detection of DNA was developed and successfully applied to detect H5-type DNA.
BioNanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology, P.O. Box 115, Yuseong, Daejeon 305-600, Republic of Korea.
