Designing
translational antioxidative agents that could scavenge
free radicals produced during reperfusion in brain ischemia stroke
and alleviate neurologic damage is the main objective for ischemic
stroke treatment. Herein, we explored and simply synthesized a biomimic
and translational Mn3O4 nanoenzyme (HSA-Mn3O4) to constrain ischemic stroke reperfusion-induced
nervous system injury. This nanosystem exhibits reduced levels of
inflammation and prolonged circulation time and potent ROS scavenging
activities. As expected, HSA-Mn3O4 effectively
inhibits oxygen and glucose deprivation-mediated cell apoptosis and
endoplasmic reticulum stress and demonstrates neuroprotective capacity
against ischemic stroke and reperfusion injury of brain tissue. Furthermore,
HSA-Mn3O4 effectively releases Mn ions and promotes
the increase of superoxide dismutase 2 activity. Therefore, HSA-Mn3O4 inhibits brain tissue damage by restraining
cell apoptosis and endoplasmic reticulum stress in vivo. Taken together, this study not only sheds light on design of biomimic
and translational nanomedicine but also reveals the neuroprotective
action mechanisms against ischemic stroke and reperfusion injury.