Genome-wide methylome and chromatin interactome identify abnormal enhancer to be risk factor of breast cancer.

ABSTRACT: Enhancer is critical cis regulatory elements in gene expression. To understand whether and how the aberrant enhancer activation may contribute to cancer risk, the differentially methylated enhancers (eDMRs) in normal and malignant breast tissues were identified and analyzed. By incorporating genome-wide chromatin interaction, integrated analysis of eDMRs and target gene expression identified 1,272 enhancer-promoter pairs. Surprisingly, two functionally distinct groups of genes were identified in these pairs, one showing better correlation to enhancer methylation (eRGs) and the other showing better correlation to promoter methylation (pRGs), and the former group is functionally enriched with cancer related genes. Moreover, enhancer methylation based clustering of breast cancer samples is ca

SUBMITTER: Wang Y 

PROVIDER: S-EPMC5546512 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature