Journal
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
Volume 9, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fcell.2021.671475
Keywords
teeth; dental lamina; apoptosis; odontogenesis; morphogenesis
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Funding
- Czech Science Foundation [19-01205S]
- MEYS CR [CZ.02.1.01/0.0/0.0/15_003/0000460]
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The study summarizes the important role of apoptosis in odontogenesis, including its regulation of cell proliferation and death, as well as its key roles in the budding of oral epithelium, tooth germ morphogenesis, and enamel knot signaling center removal. Additionally, the study discusses the molecular signaling of apoptosis in tooth development and its connection to the autophagic pathway.
The development of a tooth germ in a precise size, shape, and position in the jaw, involves meticulous regulation of cell proliferation and cell death. Apoptosis, as the most common type of programmed cell death during embryonic development, plays a number of key roles during odontogenesis, ranging from the budding of the oral epithelium during tooth initiation, to later tooth germ morphogenesis and removal of enamel knot signaling center. Here, we summarize recent knowledge about the distribution and function of apoptotic cells during odontogenesis in several vertebrate lineages, with a special focus on amniotes (mammals and reptiles). We discuss the regulatory roles that apoptosis plays on various cellular processes during odontogenesis. We also review apoptosis-associated molecular signaling during tooth development, including its relationship with the autophagic pathway. Lastly, we cover apoptotic pathway disruption, and alterations in apoptotic cell distribution in transgenic mouse models. These studies foster a deeper understanding how apoptotic cells affect cellular processes during normal odontogenesis, and how they contribute to dental disorders, which could lead to new avenues of treatment in the future.
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