Loss of lncRNA H19 suppresses osteoblast differentiation under oxidative stress
Overexpressing the noncoding RNA restored bone healing in mice, separating impaired osteogenesis from the onset of cellular senescence.
In mouse cells and animal models, researchers investigated how oxidative stress and reactive oxygen species impair osteoblast differentiation. By analyzing gene expression changes driven by oxidative stress and Padi2 deficiency, the team identified the long noncoding RNA H19 as a shared target. Knocking down H19 in mouse MC3T3-E1 pre-osteoblasts significantly inhibited their ability to differentiate into mature bone-forming cells. However, H19 knockdown did not cause the cellular senescence features triggered by hydrogen peroxide exposure or Padi2 loss. In vivo, overexpressing H19 enhanced bone healing in a mouse calvarial defect model.
Why it matters
Impaired osteoblast activity and oxidative stress are central drivers of age-related bone loss. Identifying H19 shows how oxidative stress disrupts bone formation independently of traditional senescence arrest.
Caveats
The findings rely on an immortalized mouse cell line and an acute surgical injury model rather than naturally aged animals or human tissues.
- H19 knockdown
- H19 overexpression
- Hydrogen peroxide
- PADI2 knockdown
- Cellular senescence
- Oxidative stress and ROS signalling
- H19
- Padi2
- Mus musculus
The paper
lncRNA H19 downregulation mediates oxidative stress-induced osteogenic dysfunction
Shin HR, Park SG, Yoon H et al.
Bone · 2 Oct 2026