The application discloses a ROS
response type selenium-
cerium composite nanometer
enzyme and a preparation and application thereof, and comprises the following steps: S1, preparation of an organic
silicon source double-[3-(triethoxy)silyl propyl]
diselenide silane; S2, preparation of a mesoporous organic
silicon nanometer material bridged by a
diselenide bond; S3, preparation of a
hyaluronic acid coated
cerium dioxide nanometer
enzyme; and S4, preparation of the ROS
response type selenium-
cerium composite nanometer
enzyme. Through the three core innovations of embedding a
diselenide bond skeleton, preloading HA-CeO2 in a channel and multi-enzyme
simulation cooperation, the application systematically solves the key bottlenecks of stability, functionality, targeting and
antioxidant efficiency of the existing nanometer platform, and provides a high-efficiency, safe and intelligent
drug-free nanometer treatment new strategy for
acute kidney injury.