Next generation sequencing reveals a novel nonsense mutation in MSX1 gene related to oligodontia

0494324 - ÚŽFG 2019 RIV US eng J - Journal Article
Bonczek, Ondřej - Bielik, P. - Krejčí, P. - Zeman, T. - Izakovičová-Hollá, L. - Šoukalová, J. - Vaněk, J. - Gerguri, T. - Balcar, Vladimír Josef - Šerý, Omar
Next generation sequencing reveals a novel nonsense mutation in MSX1 gene related to oligodontia.
PLoS ONE. Roč. 13, č. 9 (2018), č. článku e0202989. ISSN 1932-6203. E-ISSN 1932-6203
R&D Projects: GA MZd(CZ) NT11420
Institutional support: RVO:67985904
Keywords : oligodontia * tooth agenesis
OECD category: Dentistry, oral surgery and medicine
Impact factor: 2.776, year: 2018

Tooth agenesis is one of the most common craniofacial disorders in humans. More than 350 genes have been associated with teeth development. In this study, we enrolled 60 child patients (age 13 to 17) with various types of tooth agenesis. Whole gene sequences of PAX9, MSX1, AXIN2, EDA, EDAR and WNT10a genes were sequenced by next generation sequencing on the Illumina MiSeq platform. We found previously undescribed heterozygous nonsense mutation g.8177G>T (c.610G>T) in MSX1 gene in one child. Mutation was verified by Sanger sequencing. Sequencing analysis was performed in other family members of the affected child. All family members carrying g.8177G>T mutation suffered from oligodontia (missing more than 6 teeth excluding third molars). Mutation g.8177G>T leads to a stop codon (p.E204X) and premature termination of Msx1 protein translation. Based on previous in vitro experiments on mutation disrupting function of Msx1 homeodomain, we assume that the heterozygous g. 8177G>T nonsense mutation affects the amount and function of Msx1 protein and leads to tooth agenesis.
Permanent Link: http://hdl.handle.net/11104/0287508