Tumor microenvironment-triggered fabrication of gold nanomachines for tumor-specific photoacoustic imaging and photothermal therapy

results indicated that the designed gold nanomachines can serve as efficient theranostic agents for diagnosis and therapy. Moreover, we found that the α-CD caps have the ability to protect the nanoparticles from clearance and enzyme digestion, which helps the nanoparticles reach the tumor more efficiently.