Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 7-Day Trial for You or Your Team.

Learn More →

LepR-Expressing Stem Cells Are Essential for Alveolar Bone Regeneration

LepR-Expressing Stem Cells Are Essential for Alveolar Bone Regeneration Stem cells play a critical role in bone regeneration. Multiple populations of skeletal stem cells have been identified in long bone, while their identity and functions in alveolar bone remain unclear. Here, we identified a quiescent leptin receptor–expressing (LepR+) cell population that contributed to intramembranous bone formation. Interestingly, these LepR+ cells became activated in response to tooth extraction and generated the majority of the newly formed bone in extraction sockets. In addition, genetic ablation of LepR+ cells attenuated extraction socket healing. The parabiosis experiments revealed that the LepR+ cells in the healing sockets were derived from resident tissue rather than peripheral blood circulation. Further studies on the mechanism suggested that these LepR+ cells were responsive to parathyroid hormone/parathyroid hormone 1 receptor (PTH/PTH1R) signaling. Collectively, we demonstrate that LepR+ cells, a postnatal skeletal stem cell population, are essential for alveolar bone regeneration of extraction sockets. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Dental Research: Featuring Critical Reviews in Oral Biology & Medicine SAGE

Loading next page...
 
/lp/sage/lepr-expressing-stem-cells-are-essential-for-alveolar-bone-DdtawK1hWK

References (38)

Publisher
SAGE
Copyright
© International & American Associations for Dental Research 2020
ISSN
0022-0345
eISSN
1544-0591
DOI
10.1177/0022034520932834
Publisher site
See Article on Publisher Site

Abstract

Stem cells play a critical role in bone regeneration. Multiple populations of skeletal stem cells have been identified in long bone, while their identity and functions in alveolar bone remain unclear. Here, we identified a quiescent leptin receptor–expressing (LepR+) cell population that contributed to intramembranous bone formation. Interestingly, these LepR+ cells became activated in response to tooth extraction and generated the majority of the newly formed bone in extraction sockets. In addition, genetic ablation of LepR+ cells attenuated extraction socket healing. The parabiosis experiments revealed that the LepR+ cells in the healing sockets were derived from resident tissue rather than peripheral blood circulation. Further studies on the mechanism suggested that these LepR+ cells were responsive to parathyroid hormone/parathyroid hormone 1 receptor (PTH/PTH1R) signaling. Collectively, we demonstrate that LepR+ cells, a postnatal skeletal stem cell population, are essential for alveolar bone regeneration of extraction sockets.

Journal

Journal of Dental Research: Featuring Critical Reviews in Oral Biology & MedicineSAGE

Published: Oct 1, 2020

There are no references for this article.