Human iPSC-derived retinal pigment epithelium: a model system for identifying and functionally characterizing causal variants at AMD risk loci

作者: Erin N Smith , Agnieszka D’Antonio-Chronowska , William W Greenwald , Victor Borja , Lana R Aguiar

DOI: 10.1101/440230

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摘要: Summary We evaluate whether human induced pluripotent stem cell-derived retinal pigment epithelium (iPSC-RPE) cells can be used to prioritize and functionally characterize causal variants at age-related macular degeneration (AMD) risk loci. generated iPSC-RPE from six subjects show that they have morphological molecular characteristics similar native RPE. RNA-seq, ATAC-seq, H3K27ac ChIP-seq data observe high similarity in gene expression enriched transcription factor motif profiles between fetal-RPE. performed fine-mapping of AMD loci by integrating the iPSC-RPE, adult retina, RPE, which identified rs943080 as probable variant VEGFA. is associated with altered chromatin accessibility a distal ATAC-seq peak, decreased overall VEGFA, allele specific non-coding transcript. These results provide insight into mechanism underlying association VEGFA locus AMD.

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