Beyond Gravity: Leveraging Gene Plasticity to Mitigate Spaceflight-Induced Pathologies

As space exploration becomes increasingly accessible, understanding the molecular and pathophysiological consequences of spaceflight on the human body becomes crucial. Space-induced modifications could disrupt multiple signaling pathways, with significant implications for the functional integrity of cardiovascular, nervous, and musculoskeletal systems, among others. In a recent study, Bourdakou et al. have focused on alterations in gene expression profiles linked to cardiovascular disease (CVD), using human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) undergoing spaceflight and subsequent postflight conditions. Genes with known associations with CVD and nuclear factor erythroid 2-related factor 2 (NRF2) oxidative stress regulatory network have been identified to present consistent directional expression changes in both spaceflight and postflight. A computational drug repurposing analysis identified ten candidate agents with the potential to reverse observed transcriptomic modifications in spaceflight-exposed cardiomyocytes. These findings highlight the importance of molecular studies and emphasize the need for integrative, multi-omic research efforts to protect human health during and beyond spaceflight.