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Photodynamic therapy (PDT) is an emerging technique to induce cancer cell death. However, the tumor specificity, cellular uptake and biodistribution of many photosensitizers urgently need to be improved. In this regard, we show here that the integrated nanoassemblies based on G-quadruplex DNAs (GQDs)/protoporphyrin IX (PPIX) can serve as a synergistic platform for targeted high-performance PDT. In...
Adopting fluorescence of PPIX enhanced by a split G‐quadruplex and toehold mediated strand displacement reaction, a series of unlabeled fluorescent logic gates is set up and some of them are cascaded into circuits. Controlled release of PPIX, which is also a photosensitizer in photodynamic diagnosis and therapy, is realized by this circuit, making it a wise choice for DNA computing.
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