HOTAIR is a REST-regulated lncRNA that promotes neuroendocrine differentiation in castration resistant prostate cancer

Autor: Jui Ting Tang, Chin Chen Pan, Ching Hsin Chang, Pei Ching Chang, Tzu-Ping Lin, Yun Li Luo, Mel Campbell, Shih Yen Lu, Tze Tze Liu, Hsing Jein Kung, Yi Ting Chang, Ting Yu Cheng, Chia Pei Yang, Chi Hung Lin
Rok vydání: 2018
Předmět:
Zdroj: Cancer letters. 433
ISSN: 1872-7980
Popis: Long non-coding RNAs (lncRNAs) are emerging as novel diagnostic markers of prostate cancer (PCa) and new determinants of castration-resistant PCa (CRPC), an aggressive and metastatic form of PCa. In addition to androgen receptor (AR) signaling, neuroendocrine differentiation (NED) is associated with CRPC. Recent reports demonstrate that the downregulation of repressor element-1 silencing transcription factor (REST) protein is a key step in NED of PCa cells. Here, we report HOTAIR as a novel REST-repressed lncRNA that is upregulated in NED PCa cells and in CRPC. HOTAIR overexpression is sufficient to induce, whereas knockdown of HOTAIR suppressed NED of PCa cells. Gene ontology (GO) analysis of differentially expressed genes under HOTAIR overexpression and in CRPC versus benign prostatic hyperplasia (BPH) suggests that HOTAIR may participate in PCa progression. Taken together, our results provide the first evidence of lncRNA HOTAIR as a driver for NED of PCa cells.
Databáze: OpenAIRE