Reduced APOE Expression Improves Bone Regeneration in Aged Mice
Researchers report that hepatic ApoE increases with age and inhibits osteoblast differentiation via Lrp4-mediated suppression of Wnt/β-catenin signaling. Liver-specific ApoE knockout or a neutralizing antibody lowered circulating ApoE and substantially improved fracture healing and bone deposition in aged mice, indicating a potentially translatable intervention to enhance geriatric bone regeneration while raising cardiovascular safety considerations.
Why it mattersHepatic APOE neutralization improved fracture healing in aged mice, prompting prioritization of antibody programs for geriatric bone repair.