• Medicine
  • Published in
    Guang pu xue yu guang pu fen…

[Gold nanoparticle-aptamer based colorimetric biosensing assays].

  title={[Gold nanoparticle-aptamer based colorimetric biosensing assays].},
  author={Jin-chuan Liu and Zhen-zhen L{\"u} and Ai-liang Chen},
  journal={Guang pu xue yu guang pu fen xi = Guang pu},
  volume={34 8},
The single strand nucleic acid based aptamer could bound to targets with high sensitivity and specificity. Gold nanoparticles have strong particle space optical effects and could take a color change from red to blue when the dispersed nanoparticles were aggregated. Aptamer could be immobilized through covalent coupling or direct adsorption to the surface of gold nanoparticle. Various approaches have been designed for biosensing based on the target induced aptamer-gold nanoparticle system color… CONTINUE READING