Lehang Lin, Moli Huang, Xianping Shi, Anand Mayakonda, Kaishun Hu, Yan-Yi Jiang, Xiao Guo, Li Chen, Brendan Pang, Ngan Doan, Jonathan W Said, Jianjun Xie, Sigal Gery, Xu Cheng, Zhaoyu Lin, Jinsong Li, Benjamin P Berman, Dong Yin, De-Chen Lin, H Phillip Koeffler
As the second most common malignant bone tumor in children and adolescents, Ewing sarcoma is initiated and exacerbated by a chimeric oncoprotein, most commonly, EWS-FLI1. In this study, we apply epigenomic analysis to characterize the transcription dysregulation in this cancer, focusing on the investigation of super-enhancer and its associated transcriptional regulatory mechanisms. We demonstrate that super-enhancer-associated transcripts are significantly enriched in EWS-FLI1 target genes, contribute to the aberrant transcriptional network of the disease, and mediate the exceptional sensitivity of Ewing sarcoma to transcriptional inhibition...
February 20, 2019: Nucleic Acids Research