Authors: Shevanuja Theivendran, Chengzhong Yu
Published: 2021-04-16
Source: Full article
AbstractCellular delivery of nitric oxide (NO) using NO donor moieties such as S‐nitrosothiol (SNO) is of great interest for various applications. However, understandings of the intracellular decomposition routes of SNO toward either NO or ammonia (NH3) production are surprisingly scarce. Herein, the first report of SNO modified mesoporous organosilica nanoparticles with tetrasulfide bonds for enhanced intracellular NO delivery, ≈10 times higher than a commercial NO donor, is presented. The tetrasulfide chemistry modulates the SNO decomposition by shifting from NH3 to NO production in glutathione rich cancer cells. This study provides a new strategy to control the NO level in biological systems.