ScRNAseq of peripheral blood mononuclear cells in age-related macular degeneration
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE222647 | GEO | 2023/10/06
REPOSITORIES: GEO
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Project description:Age-related macular degeneration (AMD) is a leading cause of blindness in the elderly. The extent to which epigenetic changes regulate the progression of AMD is unclear. Here we profiled chromatin accessibility in the retina and retinal pigmented epithelium (RPE) from AMD patients and controls. Global decreases in chromatin accessibility occur in the RPE in early AMD and in the retina with advanced disease. Footprints of photoreceptor and RPE-specific transcription factors are enriched in differentially accessible regions (DARs) and reduced AMD. Genes associated with DARs show altered expression in AMD. Cigarette smoke, an established risk factor for AMD, applied to human iPSC-derived RPE cells recapitulates epigenomic changes seen in AMD. In addition to providing a comprehensive profile of chromatin accessibility in human RPE and retina, this study shows that global decreases in chromatin accessibility may play a critical role in AMD progression.
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