Estrogen receptor beta enhances chemotherapy response of GBM cells by down regulating DNA damage response pathways

We examined the transcriptional changes modulated by estrogen receptor beta (ERβ) by performing global transcriptome analysis. U87 cells were transduced with lentiviral particles carrying either empty vector or ERβ-FLAG expression vector and the RNA was isolated and utilized for RNA-seq analysis. Our results demonstrated that ERβ modulated genes were related to homologous recombination, DNA damage response, ATM signaling and cell cycle pathways. Total RNA was isolated from U87 cells expressing either empty vector or ERβ expression vector. Illumina TruSeq RNA Sample Preparation was performed following manufacturer's protocol. Samples were run on an Illumina HiSeq 2000 in duplicate. The combined raw reads were aligned to UCSC hg19 and genes were annotated by Tophat2. Genes were annotated and quantified by HTSeq-DESeq pipeline.