Disruptive NADSYN1 Variants Implicated in Congenital Vertebral Malformations
| Autor: | Yuchen Niu, Zhengye Zhao, Jianguo Terry Zhang, Jiashen Shao, Nan Wu, Zhihong Wu, Sen Zhao, Jiachen Lin, Zhifa Zheng, Xiaoxin Li, Shengjie Li, Zefu Chen, Lina Zhao |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Genetics Kidney biology business.industry NADSYN1 congenital NAD Deficiency Disorder QH426-470 Nicotinamide adenine dinucleotide In vitro chemistry.chemical_compound Enzyme medicine.anatomical_structure chemistry biology.protein medicine NADSYN1 gene Missense mutation NAD+ kinase business congenital vertebral malformation exome sequencing Genetics (clinical) Exome sequencing |
| Zdroj: | Genes, Vol 12, Iss 1615, p 1615 (2021) Genes Volume 12 Issue 10 |
| ISSN: | 2073-4425 |
| DOI: | 10.3390/genes12101615 |
| Popis: | Genetic perturbations in nicotinamide adenine dinucleotide de novo (NAD) synthesis pathway predispose individuals to congenital birth defects. The NADSYN1 encodes the final enzyme in the de novo NAD synthesis pathway and, therefore, plays an important role in NAD metabolism and organ embryogenesis. Biallelic mutations in the NADSYN1 gene have been reported to be causative of congenital organ defects known as VCRL syndrome (Vertebral-Cardiac-Renal-Limb syndrome). Here, we analyzed the genetic variants in NADSYN1 in an exome-sequenced cohort consisting of patients with congenital vertebral malformations (CVMs). A total number of eight variants in NADSYN1, including two truncating variants and six missense variants, were identified in nine unrelated patients. All enrolled patients presented multiple organ defects, with the involvement of either the heart, kidney, limbs, or liver, as well as intraspinal deformities. An in vitro assay using COS-7 cells demonstrated either significantly reduced protein levels or disrupted enzymatic activity of the identified variants. Our findings demonstrated that functional variants in NADSYN1 were involved in the complex genetic etiology of CVMs and provided further evidence for the causative NADSYN1 variants in congenital NAD Deficiency Disorder. |
| Databáze: | OpenAIRE |
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