Scheme 1.
Schematic illustration showing combination cancer treatment based on engineered DNAzyme molecular machines. (Left) Dynamic intercellular regulation of T-cell/cancer cell interactions based on chain-1, chain-2 and chain-3. The distance between T-cells and cancer cells can be revealed by the fluorescence signal (TAMRA). (Right) Dynamic intracellular regulation of mitochondria aggregation in cancer cells based on chain-4 and chain-5. Here, the mitochondria aggregation only happened in zinc deficient cancer cells.