Autophagy Regulates Craniofacial Bone Acquisition.

Calcified Tissue International
Neil ThomasFei Liu

Abstract

Increasing evidence has demonstrated the important role of autophagy in skeletal homeostasis; however, the role of autophagy in craniofacial bone development and acquisition is largely unknown. In this study, we investigated the effect of autophagy suppression on craniofacial bone acquisition by deleting Fip200 or Atg5, two essential autophagy genes, using Osterix-Cre (Osx-Cre). We found that the Osx-Cre transgene mildly decreased the bone mass of parietal bone but not frontal bone, and did not affect cranial base bone mass in adult mice. In the cranial vault, Fip200 or Atg5 deletion similarly decreased 50% bone mass of neural crest-derived frontal bone; Atg5 deletion decreased 50% and Fip200 deletion decreased 30% bone mass of mesoderm-derived parietal bone. In the cranial base, Fip200 or Atg5 deletion similarly decreased 30% bone mass of neural crest-derived presphenoid bone; Atg5 deletion decreased 30% and Fip200 deletion decreased 16% bone mass of mesoderm-derive basioccipital bone. Lastly, we used doxycycline treatment to inhibit the Osx-Cre expression until 2 months of age and showed that postnatal Fip200 deletion led to cranial vault bone mass decrease in association with a small increase in both bone volume/tissue volum...Continue Reading

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Citations

Jun 9, 2020·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·Yuehua YangLeisheng Jiang
Jun 15, 2020·Ageing Research Reviews·Xu LiLing Qin

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Methods Mentioned

BETA
transgenic
PCR

Software Mentioned

Microview
GraphPad Prism

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