Fig. 8: Schematic representation of the lncRNA ODSM/miR-139-3p/ELK1 signaling pathway in osteoblasts.

In this mechanism, miR-139-3p is upregulated and interacts with downregulated lncRNA ODSM in osteoblasts under simulated microgravity conditions. As a direct and vital target, ELK1 is inhibited by miR-139-3p and then suppresses osteoblast differentiation and promotes osteoblast apoptosis