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- W3080941856 abstract "Abstract BRCA1 germline mutation carriers are predisposed to breast cancers. Epigenomic regulations have been known to strongly interact with genetic variations and potentially mediate biochemical cascades involved in tumorigenesis. Due to the cell-type specificity of epigenomic features, profiling of individual cell types is critical for understanding the molecular events in various cellular compartments within complex breast tissue. Here we report cell-type-specific profiling of genome-wide histone modifications including H3K27ac and H3K4me3 in basal, luminal progenitor, mature luminal, and stromal cells extracted from pre-cancer BRCA1 mutation carriers and non-carriers, conducted using a low-input technology that we developed. We discover that basal and stromal cells present the most extensive epigenomic differences between mutation carriers ( BRCA1 mut /+ ) and non-carriers ( BRCA1 +/+ ) while luminal progenitor and mature luminal cells are relatively unchanged with the mutation. Furthermore, the epigenomic changes in basal cells due to BRCA1 mutation appear to facilitate their transformation into luminal progenitor cells. Our findings shed light on the pre-cancer epigenomic dynamics due to BRCA1 mutation and how they may contribute to eventual development of predominantly basal-like breast cancer." @default.
- W3080941856 created "2020-09-01" @default.
- W3080941856 creator A5022265671 @default.
- W3080941856 creator A5039556188 @default.
- W3080941856 creator A5049924861 @default.
- W3080941856 creator A5059995356 @default.
- W3080941856 date "2020-08-24" @default.
- W3080941856 modified "2023-10-17" @default.
- W3080941856 title "Cell-type-specific epigenomic variations associated with BRCA1 mutation in pre-cancer human breast tissues" @default.
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- W3080941856 doi "https://doi.org/10.1101/2020.08.24.265199" @default.
- W3080941856 hasPublicationYear "2020" @default.