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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/9879

Title: Primary cilia of odontoblasts: possible role in molar morphogenesis
Authors: Thivichon-Prince, B
Couble, ML
Giamarchi, A
Delmas, P
Franco, B
Romio, L
Ressnikoff, D
Magloire, H
Bleicher, F
Issue Date: 2009
Citation: JOURNAL OF DENTAL RESEARCH, 88(10). p. 910-915
Abstract: A primary cilium, a sensory organelle present in almost every vertebrate cell, is regularly described in odontoblasts, projecting from the surfaces of the cells. Based on the hypothesis that the primary cilium is crucial both for dentin formation and possibly in tooth pain transmission, we have investigated the expression and localization of the main cilium components and involvement of the OFD1 gene in tooth morphogenesis. Odontoblasts in vitro express tubulin, inversin, rootletin, OFD1, BBS4, BBS6, ALMS1, KIF3A, PC1, and PC2. In vivo, cilia are aligned parallel to the dentin walls, with the top part oriented toward the pulp core. Close relationships between cilium and nerve fibers are evidenced. Calcium channels are concentrated in the vicinity of the basal body. Analysis of these data suggests a putative role of cilia in sensing the microenvironment, probably related to dentin secretion. This hypothesis is enhanced by the huge defects observed on molars from Ofd1 knockout mice, showing undifferentiated dentin-forming cells.
URI: http://hdl.handle.net/1942/9879
DOI: 10.1177/0022034509345822
ISI #: 000270286400005
ISSN: 0022-0345
Category: A1
Type: Journal Contribution
Validation: ecoom, 2010
Appears in Collections: Research publications

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