Novel GATA6 loss-of-function mutation responsible for familial atrial fibrillation

  • Authors:
    • Jian Li
    • Wei-Dong Liu
    • Zhong-Liang Yang
    • Yi-Qing Yang
  • View Affiliations

  • Published online on: July 18, 2012     https://doi.org/10.3892/ijmm.2012.1068
  • Pages: 783-790
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Abstract

Atrial fibrillation (AF) is the most commonly sustained cardiac arrhythmia, and confers a substantially increased risk of morbidity and mortality. Increasing evidence has indicated that hereditary defects are implicated in AF. However, AF is genetically heterogeneous and the genetic etiology of AF in a significant portion of patients remains unclear. In this study, the entire coding sequence and splice junctions of the GATA6 gene, which encodes a zinc-finger transcription factor crucial for cardiogenesis, were sequenced in 140 unrelated patients with lone AF. The available relatives of the index patient carrying an identified mutation and 200 unrelated ethnically-matched healthy individuals used as the controls were genotyped. The functional characteristics of the mutant GATA6 were assessed in contrast to its wild-type counterpart using a luciferase reporter assay system. As a result, a novel heterozygous GATA6 mutation, p.G469V, was identified in a family with AF inherited in an autosomal dominant pattern. The mutation was absent in the 200 control individuals and the altered amino acid was completely conserved across species. Functional analysis demonstrated that the GATA6 mutation was associated with a significantly decreased transcriptional activity. The findings provide novel insight into the molecular mechanism involved in the pathogenesis of AF, as well as insight into potential therapies for the prevention and treatment of AF.
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October 2012
Volume 30 Issue 4

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

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Spandidos Publications style
Li J, Liu W, Yang Z and Yang Y: Novel GATA6 loss-of-function mutation responsible for familial atrial fibrillation. Int J Mol Med 30: 783-790, 2012
APA
Li, J., Liu, W., Yang, Z., & Yang, Y. (2012). Novel GATA6 loss-of-function mutation responsible for familial atrial fibrillation. International Journal of Molecular Medicine, 30, 783-790. https://doi.org/10.3892/ijmm.2012.1068
MLA
Li, J., Liu, W., Yang, Z., Yang, Y."Novel GATA6 loss-of-function mutation responsible for familial atrial fibrillation". International Journal of Molecular Medicine 30.4 (2012): 783-790.
Chicago
Li, J., Liu, W., Yang, Z., Yang, Y."Novel GATA6 loss-of-function mutation responsible for familial atrial fibrillation". International Journal of Molecular Medicine 30, no. 4 (2012): 783-790. https://doi.org/10.3892/ijmm.2012.1068