AUTHOR=Gu Min , Yu Xin , Fan Liwen , Zhu Guirong , Yang Fan , Lou Shu , Ma Lan , Pan Yongchu , Wang Lin 

TITLE=Genetic Variants in miRNAs Are Associated With Risk of Non-syndromic Tooth Agenesis

JOURNAL=Frontiers in Physiology

VOLUME=11

YEAR=2020

URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2020.01052

DOI=10.3389/fphys.2020.01052

ISSN=1664-042X

ABSTRACT=<p>Non-syndromic tooth agenesis (NSTA) is one of the most common dental abnormalities. MiRNAs participated in the craniofacial and tooth development. Therefore, single nucleotide polymorphisms (SNPs) in miRNA genes may contribute to the susceptibility of non-syndromic tooth agenesis. Here, a total of 625 non-syndromic tooth agenesis cases and 1,144 healthy controls were recruited, and four miRNA SNPs (<italic>miR-146a</italic>/rs2910164, <italic>miR-196a2</italic>/rs11614913, <italic>pre-miR-605</italic>/rs2043556, <italic>pre-miR-618</italic>/rs2682818) were genotyped by the TaqMan platform. Rs2043556 showed nominal associations with risk of non-syndromic tooth agenesis (<italic>P</italic><sub>Add</sub> = 0.021) in the overall analysis, as well as upper lateral incisor agenesis (<italic>P</italic><sub>Add</sub> = 0.047) and lower incisor agenesis (<italic>P</italic><sub>Add</sub> = 0.049) in the subgroup analysis. Notably, its significant association with upper canine agenesis was observed (<italic>P</italic><sub>Add</sub> = 0.0016). Rs2043556 affected the mature of <italic>miR-605-3p</italic> and <italic>miR-605-5p</italic> while dual-luciferase report analysis indicated that <italic>MDM2</italic> was the binding target of <italic>miR-605-5p.</italic> Our study indicated that <italic>pre-miR-605</italic> rs2043556 was associated with risk of non-syndromic tooth agenesis.</p>