China Journal of Oral and Maxillofacial Surgery ›› 2021, Vol. 19 ›› Issue (5): 429-433.doi: 10.19438/j.cjoms.2021.05.008

• Original Articles • Previous Articles     Next Articles

A novel EDA gene mutation identified by whole exome sequencing in one patient with HED

YU Kang1, SHEN Yi-han1, JIANG Cai-ling1, WANG Feng2, WU Yi-qun1   

  1. 1. Department of Second Dental Center;
    2. Department of Oral Implantology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology. Shanghai 200011, China
  • Received:2021-01-18 Revised:2021-03-09 Online:2021-09-20 Published:2021-10-20

Abstract: PURPOSE: This study aimed at revealing a novel ectodysplasin A (EDA) gene mutation in one hypohidrotic ectodermal dysplasia (HED) family. METHODS: Genomic DNA was extracted from peripheral blood of patients, and whole exome sequencing was used for gene sequencing. EDA1 (ectodysplasin A1) wild-type and mutant expression plasmids were constructed. Protein expression levels were detected by Western blotting. The effect on downstream NF-κB pathway activity was detected by dual luciferase analysis. The data was analyzed with SPSS 20.0 software. RESULTS: We identified a novel EDA c.649_666del (p.Pro217_Pro222del) mutation. Compared with wild-type EDA1, the mutant EDA1 protein can be expressed and secreted normally, but its transcriptional activation of downstream NF-κB pathway was significantly decreased(P<0.05). CONCLUSIONS: This study identified a novel deletion mutation of EDA gene, which expanded the mutation spectrum of X-linked hypohidrotic ectodermal dysplasia and can be helpful for prenatal consultation, diagnosis and correction.

Key words: Hypohidrotic ectodermal dysplasia, EDA, Whole exome sequencing, Gene mutation

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