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Updated: Jul 19, 2026
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Isolation and Culture of Dental Epithelial Stem Cells from the Adult Mouse Incisor
Published on: May 1, 2014
Expression of claudins in murine tooth development
Atsushi Ohazama1, Paul T Sharpe
1Department of Craniofacial Development, Dental Institute, King's College, Guy's Hospital, London Bridge, London, UK.
Summary
This study reveals dynamic claudin gene expression during tooth development in mice. Nine claudin genes show specific patterns, highlighting their role in early epithelial organization and cell interactions.
Area of Science:
- Developmental Biology
- Molecular Biology
- Cell Biology
Background:
- Claudins are transmembrane proteins forming tight junctions.
- Tight junctions are crucial for epithelial barrier function and cell adhesion.
- Understanding claudin roles in organogenesis is essential.
Purpose of the Study:
- To investigate the spatiotemporal expression of claudin genes during murine odontogenesis.
- To identify specific claudin expression patterns in different cell types during tooth development.
- To elucidate the potential role of claudins in early epithelial organization within the tooth primordium.
Main Methods:
- Comparative in situ hybridization was used to analyze 11 claudin genes (claudin1-claudin11).
- Analysis spanned from epithelial thickening to cytodifferentiation stages of murine tooth development.
- Expression patterns were examined at different developmental stages, including bud and early bell stages.
Main Results:
- Dynamic spatiotemporal expression was identified for 9 out of 11 claudins.
- Claudin1 and claudin4 were specifically expressed in the stratum intermedium at the early bell stage.
- Claudin2 and claudin10 showed specific expression in preameloblasts and preodontoblasts, respectively.
- At the bud stage, six claudins (claudin1, 3, 4, 6, 7, and 10) exhibited localized expression, indicating spatial interactions.
Conclusions:
- Claudins play a significant role in the complex epithelial organization of the developing tooth.
- Specific claudin expression patterns suggest distinct functions in cell differentiation and spatial interactions during odontogenesis.
- This study provides novel insights into the molecular mechanisms underlying early tooth development.
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