Pluto Bioinformatics

GSE145081: Long non-coding RNA MANCR is a target of BET bromodomain protein BRD4 and plays a critical role for cellular migration and invasion abilities of prostate cancer

Bulk RNA sequencing

Androgen receptor (AR)-negative castration-resistant prostate cancer (CRPC) is highly aggressive and resistant to current therapies. BET bromodomain protein BRD4 binds to super-enhancers (SEs) that drive high expression of oncogenes in many cancers. A BET inhibitor JQ1 has been found to suppress malignant phenotypes of prostate cancer cells, however, the target genes of JQ1 remains largely unknown. Here we show that SE-associated genes specific for AR-negative CRPC PC3 cells include the genes involved in migration and invasion and that JQ1 impairs migration and invasion of PC3 cells. We identified the long non-coding RNA MANCR, which is markedly down-regulated by JQ1 and found that BRD4 binds to the MANCR locus. MANCR knockdown led to a significant decrease in migration and invasion of PC3 cells. RNA sequencing analysis revealed that expression of the genes involved in migration and invasion is altered by MANCR knockdown. In summary, our data demonstrate that MANCR has a critical role for cellular migration and invasion abilities of PC3 cells. SOURCE: Daisuke Okuzaki (dokuzaki@biken.osaka-u.ac.jp) - Research institute for microbial diseases, Osaka university