NR2F2 loss‑of‑function mutation is responsible for congenital bicuspid aortic valve

  • Authors:
    • Juan Wang
    • Pradhan Abhinav
    • Ying‑Jia Xu
    • Ruo‑Gu Li
    • Min Zhang
    • Xing‑Biao Qiu
    • Ruo‑Min Di
    • Qi Qiao
    • Xiu‑Mei Li
    • Ri‑Tai Huang
    • Song Xue
    • Yi‑Qing Yang
  • View Affiliations

  • Published online on: January 31, 2019     https://doi.org/10.3892/ijmm.2019.4087
  • Pages: 1839-1846
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Abstract

Congenital bicuspid aortic valve (BAV) represents the most common type of cardiac birth defect affecting 0.4‑2% of the general population, and accounts for a markedly increased incidence of life‑threatening complications, including valvulopathy and aortopathy. Accumulating evidence has demonstrated the genetic basis of BAV. However, the genetic basis for BAV in the majority of cases remains to be elucidated. In the present study, the coding regions and splicing donors/acceptors of the nuclear receptor subfamily 2 group F member 2 (NR2F2) gene, which encodes a transcription factor essential for proper cardiovascular development, were sequenced in 176 unrelated cases of congenital BAV. The available family members of the proband carrying an identified NR2F2 mutation and 280 unrelated, sex‑ and ethnicity‑matched healthy individuals as controls were additionally genotyped for NR2F2. The functional effect of the mutation was characterized using a dual‑luciferase reporter assay system. As a result, a novel heterozygous NR2F2 mutation, NM_021005.3: c.288C>A; p.(Cys96*), was identified in a family with BAV, which was transmitted in an autosomal dominant mode with complete penetrance. The nonsense mutation was absent from the 560 control chromosomes. Functional analysis identified that the mutant NR2F2 protein had no transcriptional activity. Furthermore, the mutation disrupted the synergistic transcriptional activation between NR2F2 and transcription factor GATA‑4, another transcription factor that is associated with BAV. These findings suggested NR2F2 as a novel susceptibility gene of human BAV, which reveals a novel molecular pathogenesis underpinning BAV.
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April-2019
Volume 43 Issue 4

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Wang J, Abhinav P, Xu YJ, Li RG, Zhang M, Qiu XB, Di RM, Qiao Q, Li XM, Huang RT, Huang RT, et al: NR2F2 loss‑of‑function mutation is responsible for congenital bicuspid aortic valve. Int J Mol Med 43: 1839-1846, 2019
APA
Wang, J., Abhinav, P., Xu, Y., Li, R., Zhang, M., Qiu, X. ... Yang, Y. (2019). NR2F2 loss‑of‑function mutation is responsible for congenital bicuspid aortic valve. International Journal of Molecular Medicine, 43, 1839-1846. https://doi.org/10.3892/ijmm.2019.4087
MLA
Wang, J., Abhinav, P., Xu, Y., Li, R., Zhang, M., Qiu, X., Di, R., Qiao, Q., Li, X., Huang, R., Xue, S., Yang, Y."NR2F2 loss‑of‑function mutation is responsible for congenital bicuspid aortic valve". International Journal of Molecular Medicine 43.4 (2019): 1839-1846.
Chicago
Wang, J., Abhinav, P., Xu, Y., Li, R., Zhang, M., Qiu, X., Di, R., Qiao, Q., Li, X., Huang, R., Xue, S., Yang, Y."NR2F2 loss‑of‑function mutation is responsible for congenital bicuspid aortic valve". International Journal of Molecular Medicine 43, no. 4 (2019): 1839-1846. https://doi.org/10.3892/ijmm.2019.4087