(A) Experimental setup for assessing the causal role of SE DNA methylation suppresses H3K27ac. FACS (DNA methylation), RT-qPCR (Mir290–295) and ChIP-qPCR (H3K27ac) were co-assessed from the same pool of cells from each sample. (B) Loss of DNA methylation in MIR290-SE-TG T−G− cells 8 days post Dnmt1 and Uhrf1 sgRNA transfection as compared to controls. (C) H3K27ac ChIP-qPCR at the Mir290 SE from the experimental groups in (B), respectively. Data are represented as mean ± SD. (D). Mir290–295 pri-miRNA level from the experimental groups in (B). Data are represented as mean ± SD. (E) Summary of the dynamic regulation and functional impact of allelic SE methylation. (F) Colony formation assays in “2i” starting from 100 sorted cells. Data are represented as mean ± SD. (G) Growth curves measured by AlamarBlue Cell Viability Reagent. Data are represented as mean ± SD. (H) Principal component analysis of the top 5% highly variable genes from different populations of SOX2-SE-TG (Labeled as S. red: T+G−, green, T−G+, black: T−G−, yellow: T+G+) and MIR290-SE-TG (Labeled as M. color code same as S). See also Figure S5, S6, S7.