Long non-coding RNA UCA1 promotes gallbladder cancer progression by epigenetically repressing p21 and E-cadherin expression
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Qiang Cai1,*, Longyang Jin1,*, Shouhua Wang1, Di Zhou1, Jiandong Wang1, Zhaohui Tang1 and Zhiwei Quan1
1Department of General Surgery, XinHua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200092, China
*These authors have contributed equally to this work
Zhiwei Quan, email: email@example.com
Keywords: lncRNA UCA1, gallbladder cancer, EZH2, p21, E-cadherin
Received: April 05, 2017 Accepted: April 28, 2017 Published: May 25, 2017
A growing number of studies indicated that long non-coding RNAs (lncRNAs) determine some cellular processes in cancer, such as proliferation, metastasis and differentiation. Urothelial carcinoma associated 1 (UCA1), an lncRNA, had been reported for its overexpression and oncogenic effect on various human cancers. In this study, we found that UCA1 was significantly overexpressed in gallbladder cancer (GBC) and positively correlated with tumor size, lymph node metastasis, TNM stage and short survival time. Moreover, UCA1 promoted GBC cell proliferation and metastasis in vitro and tumor growth in vivo. Mechanically, we identified that UCA1 promoted GBC progression through recruiting enhancer of zeste homolog 2 (EZH2) to the promoter of p21 and E-cadherin, and epigenetically suppressing their transcript.
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