In this article, the features of DNA- functionalized gold nanoparticles, including the size-dependent color, the amount of conjugated DNA, and the fluorescence quenchers will be described. DNA and aptamer conjugated gold nanoparticles can be applied for cunstructing the colorimetric and fluorescent biosensors to detect all types of disease markers including DNA, RNA, protein and other small molecular metabolites.
The early phase of this work is performed in clean buffers and serum samples. DNA-conjugated gold nanoparticles delivery into the cells is recently used for intracellular diagnosis in personalized medicine. Simultaneously, DNA-functionalizedgold nanoparticles can be used to deliver the antisense DNA for gene-therpey applications.
With targeting both diagnosis and treatment applications, DNA- functionalized gold nanoparticles can be used as a suitable approach to reach theranostics purposes (diagnosis and treatment in a simultaneous manner).