Changes in H3K27 acetylation in THP1 human AML cell line on PHF6 knockout, PHF6R274Q mutation, PHIP knockout, and double knockout of PHF6 and PHIP compared to wildtype clones

PHF6 is a transcriptional regulator mutated in 3-5% of acute myeloid leukemia. To understand how PHF6 and its functional partner PHIP interact with each other on chromatin, we performed ChIP-Seq for PHF6 (in the presence and absence of PHIP), for PHF6R274Q mutant, and for PHIP. We observd that PHF6 and PHIP peaks overlap on chromatin, and PHF6 requires PHIP for its chromatin occupancy. ATAC-Seq and H3K27ac ChIP-Seq showed that PHF6 and PHIP occupy open and active regions of the genome. H3K27ac ChIP-Seq of wildtype, PHF6 knockout, PHF6R274Q mutant, PHIP knockout, and PHF6/PHF6 double-knockout in THP1 AML cells that were clonally selected and expanded after Cas9/RNP and sgRNA transfection