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Learn MorePurpose: Identification of core transcriptional regulatory programs and bromodomain and extraterminal (BET) protein dependency in liposarcoma (LPS); ; Methods: ChIP-seq and RNA-seq were performed on LPS cells. Antibodies against H3K27ac, H3K4me1, H3K4me3, RNA-Pol2, BRD2, BRD3, BRD4, FOSL2, pan-RUNX, and DDIT3 (FUS-DDIT3) were used for ChIP-seq assays. The transcriptome responses of LPS141 and MLS402 cells to OTX015 and ARV-825 were compared.; ; Result: We generated genome-wide chromatin-state maps of LPS cells. By charting the super-enhancer structures, we identify a bromodomain and extraterminal (BET) protein-cooperated FUS-DDIT3 function in myxoid LPS and a BET protein-dependent core transcriptional regulatory circuitry consisting of FOSL2, MYC, and RUNX1 in de-differentiated LPS. This study also provides a framework for discovering and targeting of core oncogenic transcriptional programs.; SOURCE: Tuan Zea Tan (csittz@nus.edu.sg) - National University of Singapore
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