Whole-exome sequencing implicates UBE3D in age-related macular degeneration in East Asian populations

Nat Commun. 2015 Apr 15:6:6687. doi: 10.1038/ncomms7687.

Abstract

Age-related macular degeneration (AMD) is a leading cause of irreversible central blindness among the elderly worldwide. We use exome sequencing to analyse nonsynonymous single-nucleotide variants (SNVs) across the whole genome of 216 neovascular AMD cases and 1,553 controls. As a follow-up validation, we evaluate 3,772 neovascular AMD cases and 6,942 controls from five independent cohorts in the East Asian population. Here we show strong evidence of an association at a novel, missense SNV, rs7739323, which is located in the ubiquitin protein ligase E3D (UBE3D) gene (Pmeta=1.46 × 10(-9), odds ratio (OR)=0.74, 95% confidence interval (CI): 0.63-0.88). Furthermore, ablation of the UBE3D protein lead to an abnormal amount of pigment granules deposited in retinal pigment epithelium microvilli area and an abnormal response on electroretinography (ERG) in UBE3D(+/-) heterozygous mice. Our findings indicate that the ubiquitin-proteasome system may play a role in the pathogenesis of neovascular AMD.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Angiography
  • Animals
  • Asian People / genetics*
  • Case-Control Studies
  • China
  • Coloring Agents
  • Electroretinography
  • Exome / genetics
  • Female
  • Genetic Predisposition to Disease
  • Hong Kong
  • Humans
  • Indocyanine Green
  • Japan
  • Macular Degeneration / genetics*
  • Macular Degeneration / pathology
  • Male
  • Mice
  • Mice, Knockout
  • Middle Aged
  • Polymorphism, Single Nucleotide
  • Retinal Pigment Epithelium / pathology
  • Sequence Analysis, DNA
  • Singapore
  • Tomography, Optical Coherence
  • Ubiquitin-Protein Ligases / genetics*

Substances

  • Coloring Agents
  • UBE3D protein, human
  • Ubiquitin-Protein Ligases
  • Indocyanine Green