Effect of the key histone modifications on the expression of genes related to breast cancer.

Abstract:

:Abnormal histone modifications (HMs) and transcription factors (TFs) can alter the expression of cancer-related genes to promote tumorigenesis. We studied the variations of 11 HMs and 2 TFs in human breast cancer cells (MCF-7) compared to human normal mammary epithelial cells (HMEC), and the effects of HMs/TFs in various regions of the genome on the expression changes of breast cancer-related genes. Based on HMs and TFs signals' differences between MCF-7 and HMEC flanking TSSs, the up- and down-regulated genes in MCF-7 were predicted by Random Forest, and important HMs and regions were found. Results indicate that H3K79me2, H3K27ac, and H3K4me1 are particularly important for the changes of gene expression in MCF-7. Especially, H3K79me2 around the 60-th bin flanking TSSs may be the key for regulating gene expression. Our studies reveal H3K79me2 may be a core HM for breast cancer.

journal_name

Genomics

journal_title

Genomics

authors

Jin W,Li QZ,Liu Y,Zuo YC

doi

10.1016/j.ygeno.2019.05.026

subject

Has Abstract

pub_date

2020-01-01 00:00:00

pages

853-858

issue

1

eissn

0888-7543

issn

1089-8646

pii

S0888-7543(19)30177-6

journal_volume

112

pub_type

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