Introduction Using DNA nanotechnology, we designed a disulfide-bridged single-stranded DNA nanotube (SS-DNT) functionalized with external aptamers for targeting, and encapsulating chemotherapeutic agents internally to induce apoptosis in cancer cells. Methods The SS-DNT itself and the siRNA attachment points are linked via disulfide bonds, which can be fully cleaved in the intracellular glutathione (GSH) environment of tumors, thereby enhancing the release efficiency of the drug and siRNA. This SS-DNT offers a cost-effective synthesis process and high efficiency in payload release. Results The SS-DNT exhibited efficient payload release, potent cytotoxicity, and significant tumor growth inhibition, with no detectable systemic toxicity in normal cells. Discussion With its cost-effective synthesis, efficient siRNA and drug co-delivery, and demonstrated therapeutic efficacy, this DNA nanodevice represents a promising platform for precision cancer therapy.
Luo et al. (Thu,) studied this question.