Dental properties, ultrastructure, and pulp cells associated with a novel DSPP mutation - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Oral Diseases Année : 2018

Dental properties, ultrastructure, and pulp cells associated with a novel DSPP mutation

Résumé

Objective To investigate physical characteristics and behaviours of dental pulp cells of teeth isolated from a dentinogenesis imperfecta ( DGI ) patient with a novel dentin sialophosphoprotein ( DSPP ) mutation. Subjects and Methods Whole exome and Sanger sequencing were employed to identify mutations. Physical characteristics of the teeth were examined. Pulp cells’ behaviours including cell proliferation, colony‐forming unit, osteogenic differentiation, pluripotent markers, and mesenchymal stem cell markers were investigated. Results The proband had opalescent brown primary teeth with extensive loss of enamel. Mutation analysis revealed a novel heterozygous 4‐bp deletion, c.1915_1918del AAGT (p.K639QfsX674), in exon 5 of the DSPP associated with DGI . Analysis of the extracted primary incisor demonstrated a decrease in brightness but an increase in yellow and red chroma. The dentin showed reduced mineral density. The dentinal tubules were present in the predentin, but progressively collapsed in the dentin. The pulp cells exhibited markedly reduced CD 105 expression, decreased cell proliferation, and smaller colony‐forming units. Conclusions We identified a novel mutation in the DSPP gene which disturbed dentin characteristics and pulp cells’ behaviours. Our study expands the mutation spectrum and understanding of pathologic dentin phenotypes related to the frameshift deletion in the dentin phosphoprotein ( DPP ) region of the DSPP gene.
Fichier non déposé

Dates et versions

hal-04233741 , version 1 (09-10-2023)

Identifiants

Citer

T Porntaveetus, T Osathanon, Nunthawan Nowwarote, P Pavasant, C Srichomthong, et al.. Dental properties, ultrastructure, and pulp cells associated with a novel DSPP mutation. Oral Diseases, 2018, 24 (4), pp.619-627. ⟨10.1111/odi.12801⟩. ⟨hal-04233741⟩
0 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More