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Activation of the hypoxia-inducible factor-1α pathway accelerates bone regeneration
Turning on the low-oxygen response speeds up bone healing
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Abstract
Mice lacking pVHL in osteoblasts showed increased vascularity and produced more bone during distraction osteogenesis.
- The HIF-1alpha pathway is activated during bone repair and is crucial for normal skeletal development.
- Mice without HIF-1alpha in osteoblasts experienced impaired blood vessel formation and bone healing.
- Increased bone regeneration in pVHL mutants was dependent on vascular endothelial growth factor (VEGF).
- Administration of small-molecule inhibitors that stabilize HIF/VEGF enhanced blood vessel formation in cell cultures.
- One small molecule, DFO, significantly improved blood vessel formation and bone regeneration when applied in vivo.
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