Endowing 1T'-ReS2 Nanosheets with Sonopiezoelectric Property by Theoretical-Guided Vacancy-Manipulated Peierls Distortion for Tumor Ferroptosis Therapy.

Sonopiezoelectric therapy harnesses piezoelectric materials to efficiently generate destructive reactive oxygen species when exposed to ultrasound. This innovative approach shows promise for tumor treatment by combining precise targeting of tumor sites through noninvasive ultrasound control with high reactive oxygen species generation capabilities via the piezoelectric effect. This study utilizes a theoretical-guided method to manipulate atomic vacancy defects and regulate the Peierls distortion in 1T'-ReS2 nanosheets, thereby imparting them with sonopiezoelectric properties not inherent to the original material. Furthermore, the plentiful unsaturated sites of ReS2 nanosheets endow them with excellent catalase- and peroxidase-mimicking activities. The reactive oxygen species generation by the engineered ReS2 nanosheets also leads to the depletion of glutathione. These capabilities are leveraged for tumor ferroptosis therapy via the classical pathway involving the 7-member 11-glutathione-GPX4 signaling axis, alongside the downregulation of dihydroorotate dehydrogenase and ferritin levels and the upregulation of fatty acid CoA ligase 4 expression. This showcases the innovative approach and potential applications of employing 1T'-ReS2 nanosheets in cancer treatment through theoretical design and materials engineering.