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  • Title: Long non-coding RNA IRAIN suppresses apoptosis and promotes proliferation by binding to LSD1 and EZH2 in pancreatic cancer.
    Author: Lian Y, Wang J, Feng J, Ding J, Ma Z, Li J, Peng P, De W, Wang K.
    Journal: Tumour Biol; 2016 Nov; 37(11):14929-14937. PubMed ID: 27644252.
    Abstract:
    Long non-coding RNA (lncRNA) modulates gene expression, while lncRNA dysregulation is associated with human cancer. Furthermore, while recent studies have shown that lncRNA IRAIN plays an important role in other malignancies, the role of IRAIN in pancreatic cancer (PC) progression remains unclear. In this study, we found that upregulation of lncRNA IRAIN was significantly correlated with tumor size, TNM stage, and lymph node metastasis in a cohort of 37 PC patients. In vitro experiments showed that knockdown of IRAIN by small interfering RNA (siRNA) significantly induced cell apoptosis and inhibited cell proliferation in both BxPC-3 and PANC-1 cells. Further mechanism study showed that, by binding to histone demethylase lysine-specific demethylase 1 (LSD1), an enhancer of zeste homolog 2 (EZH2), IRAIN reduced PC tumor cell apoptosis and induced growth arrest by silencing the expression of Kruppel-like factor 2 (KLF2) and P15. Moreover, IRAIN expression was inversely correlated with that of KLF2 and P15 in PC tissues. To our knowledge, this is the first report elucidating the role and mechanism of IRAIN in PC progression.
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