Journal
DEVELOPMENT
Volume 148, Issue 2, Pages -Publisher
COMPANY BIOLOGISTS LTD
DOI: 10.1242/dev.196360
Keywords
Ror2; Tooth root; Cell proliferation; Cdc42
Categories
Funding
- National Institute of Dental and Craniofacial Research, National Institutes of Health [R01 DE022503, R01 DE012711, U01 DE028729]
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The control of size and shape is crucial during organogenesis, and tooth formation is a complex process that fine-tunes the size and shape of teeth. Ror2-mediated noncanonical Wnt signaling plays a crucial role in regulating root development size in mouse molars, with Cdc42 potentially acting as a downstream mediator. Activation of Cdc42 can restore cell proliferation and partially rescue root development size defects in Ror2 mutant mice.
The control of size and shape is an important part of regulatory process during organogenesis. Tooth formation is a highly complex process that fine-tunes the size and shape of the tooth, which are crucial for its physiological functions. Each tooth consists of a crown and one or more roots. Despite comprehensive knowledge of the mechanism that regulates early tooth crown development, we have limited understanding of the mechanism regulating root patterning and size during development. Here, we show that Ror2-mediated noncanonical Wnt signaling in the dental mesenchyme plays a crucial role in cell proliferation, and thereby regulates root development size in mouse molars. Furthermore, Cdc42 acts as a potential downstream mediator of Ror2 signaling in root formation. Importantly, activation of Cdc42 can restore cell proliferation and partially rescue the root development size defects in Ror2 mutant mice. Collectively, our findings provide novel insights into the function of Ror2-mediated non-canonical Wnt signaling in regulating tooth morphogenesis, and suggest potential avenues for dental tissue engineering.
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