I see a day where particle sized cages like this shall be manufactured into simluated imposter shell like replicas of "organism like shapes" & attatch to disease viruses and dna to make them do as we wish.
Think of it like this,lets take a virus for example.
It has receptors that we could build a cage to fit into like a key that fits onto the virus ONLY to block virus acitivity and/or kill the virus fully and extra particles not used along with the dead viruses would be excreted in the usual manner
As it stands today we can computer model a virus.
Once we learn to mold nano gold cages into different geometric shapes we can use the computer to try these different shapes to see if they fit into protein and amino acid receptors and fool the virus into submission or death!