These ceramic particles, called nanoceria, mimic the biological behaviour of enzymes from living organisms. The particles can protect organisms from the damage caused by oxidative stress.
Nanoceria taken up by the cells could act as an antioxidant agent, without the need for repeated administration, either with pills or injections. The effects could last longer than any supplement from the pharmacy – up to several weeks.
In a previous experiment flown to the Space Station in 2017 the particles remained stable and provided protection to the muscle cells. Other research has tested nanoparticles to extend the life span of flies or human neurons in vitro.