ATAC-Seq analysis reveals a widespread decrease of chromatin accessibility in age-related macular degeneration

Nat Commun. 2018 Apr 10;9(1):1364. doi: 10.1038/s41467-018-03856-y.

Abstract

Age-related macular degeneration (AMD) is a significant cause of vision loss in the elderly. The extent to which epigenetic changes regulate AMD progression is unclear. Here we globally profile chromatin accessibility using ATAC-Seq in the retina and retinal pigmented epithelium (RPE) from AMD and control patients. Global decreases in chromatin accessibility occur in the RPE with early AMD, and in the retina of advanced disease, suggesting that dysfunction in the RPE drives disease onset. Footprints of photoreceptor and RPE-specific transcription factors are enriched in differentially accessible regions (DARs). Genes associated with DARs show altered expression in AMD. Cigarette smoke treatment of RPE cells recapitulates chromatin accessibility changes seen in AMD, providing an epigenetic link between a known risk factor for AMD and AMD pathology. Finally, overexpression of HDAC11 is partially responsible for the observed reduction in chromatin accessibility, suggesting that HDAC11 may be a potential new therapeutic target for AMD.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Aged, 80 and over
  • Case-Control Studies
  • Chromatin / chemistry*
  • Chromatin / metabolism
  • Complex Mixtures / pharmacology
  • Epigenesis, Genetic*
  • Epithelial Cells / cytology
  • Epithelial Cells / drug effects
  • Epithelial Cells / metabolism
  • Eye Proteins / genetics*
  • Eye Proteins / metabolism
  • Female
  • Genome-Wide Association Study
  • High-Throughput Nucleotide Sequencing / methods
  • Histone Deacetylases / genetics*
  • Histone Deacetylases / metabolism
  • Humans
  • Macular Degeneration / genetics*
  • Macular Degeneration / metabolism
  • Macular Degeneration / pathology
  • Male
  • Nicotiana / chemistry
  • Primary Cell Culture
  • Retinal Pigment Epithelium / metabolism
  • Retinal Pigment Epithelium / pathology
  • Smoke / analysis
  • Transcription Factors / genetics*
  • Transcription Factors / metabolism

Substances

  • Chromatin
  • Complex Mixtures
  • Eye Proteins
  • Smoke
  • Transcription Factors
  • HDAC11 protein, human
  • Histone Deacetylases