Overview
- A UCF‑led study published June 23, 2026, in GeroScience reports that combined simulated microgravity and space‑relevant radiation produced molecular changes in the liver that resemble accelerated aging.
- In lab experiments, animal models underwent 14 days of hindlimb unloading to mimic microgravity and received galactic cosmic ray and solar particle event doses at the NASA Space Radiation Laboratory, with liver tissue assessed 24 hours after irradiation.
- The team compared those liver signatures with astronaut blood data from the NASA Twins Study and the Inspiration4 mission and found overlapping genetic signals tied to senescence, inflammation, and fibrosis.
- Researchers tested microRNA‑targeting antagomirs in the animal model and identified them as early therapeutic leads that modulated aging‑ and inflammation‑related pathways, but the approach remains preclinical and needs further validation for long missions.
- The findings raise near‑term concerns for astronaut health on long missions to deep space and present a controlled, accelerated model of aging that could speed discovery of treatments for age‑related diseases on Earth.