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Occlusion completion is a significant physiological landmark of dentition establishment. However, the importance of the involvement of molecular networks engaging in occlusion establishment on the final PDL maturation is still largely unknown. In this study, using rat and mouse molar teeth and a human PDL cell line for RNAseq and proteomic analysis, we systematically screened the key molecular links in regulating PDL maturation before and after occlusion establishment. We discovered Notch, a key molecular pathway in regulating stem cell fate and differentiation, is a major player in the event. Intercepting the Notch pathway by deleting its key canonical transcriptional factor, RBP-Jkappa, using a conditional knockout strategy in the mice delayed PDL maturation. We also identified that Lamin A, a cell nuclear lamina member, is a unique marker of PDL maturation, and its expression is under the control of Notch signaling. Our study therefore provides a deep insight of how PDL maturation is regulated at the molecular level, and we expect the outcomes to be applied for a better understanding of the molecular regulation networks in physiological conditions such as tooth eruption and movement and also for periodontal diseases.<\/jats:p>","DOI":"10.1177\/0022034519871448","type":"journal-article","created":{"date-parts":[[2019,8,28]],"date-time":"2019-08-28T19:53:38Z","timestamp":1567022018000},"page":"1357-1366","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":8,"title":["Notch Coordinates Periodontal Ligament Maturation through Regulating Lamin A"],"prefix":"10.1177","volume":"98","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3103-007X","authenticated-orcid":false,"given":"B.J.","family":"Denes","sequence":"first","affiliation":[{"name":"Department of Orthodontics, University Clinic of Dental Medicine, University of Geneva, Geneva, 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