期刊
JOURNAL OF ENDODONTICS
卷 41, 期 4, 页码 493-500出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.joen.2014.11.030
关键词
Adseverin; dental pulp cells; differentiation; odontoblasts
资金
- Ministry of Health, China [[2010] 439]
- National Nature Science Foundations of China [81100742, 81200775, 81100734]
- Natural Science Foundation of Guangdong Province [9151008901000199]
- Fundamental Research Funds for the Central Universities [12ykpy65]
Introduction: Adseverin is an actin-severing and actin-capping protein that is primarily expressed in secretory cells, where it regulates the filamentous actin cytoskeleton during cell differentiation and exocytosis. However, little is known regarding its regulatory role in dental pulp cells (DPCs). This study examined the expression and function of adseverin in the proliferation, migration, and odontoblastic differentiation of DPCs. Methods: DPCs were assayed for morphologic changes, proliferation, migration, alkaline phosphatase activity, and dentin sialoprotein and dentin matrix protein-1 protein levels in vitro after knockdown of adseverin by using small interfering RNA. Tooth germs isolated from Sprague-Dawley rats were processed for immunohistochemistry analysis of adseverin. Results: Adseverin expression was increased in a time-dependent fashion in the early stage of odontoblastic differentiation. When adseverin expression was suppressed in DPCs, their cellular morphology was altered, and their proliferation, migration, and odontoblastic differentiation were substantially decreased in vitro. Secretory odontoblasts in the tooth germ at day 5 post partum expressed a stronger adseverin signal compared with those at days 1 and 3 post partum. Conclusions: Adseverin may play a crucial role in the proliferation, migration, and odontoblastic differentiation of DPCs via filamentous actin cytoskeleton regulation. However, further investigations are required to clarify the underlying mechanisms.
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