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Long noncoding RNA NEAT1 promotes cell proliferation and invasion by regulating hnRNP A2 expression in hepatocellular carcinoma cells

Authors Mang YY, Li L, Ran JH, Zhang SN, Liu J, Li LB, Chen YM, Liu J, Gao Y, Ren G

Received 3 July 2016

Accepted for publication 23 November 2016

Published 20 February 2017 Volume 2017:10 Pages 1003—1016


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 5

Editor who approved publication: Dr Yao Dai

Yuanyi Mang, Li Li, Jianghua Ran, Shengning Zhang, Jing Liu, Laibang Li, Yiming Chen, Jian Liu, Yang Gao, Gang Ren

Department of Hepato-Biliary-Pancreatic Surgery, The Calmette Affiliated Hospital of Kunming Medical University, The First Hospital of Kunming, Kunming, Yunnan, People’s Republic of China

Abstract: Growing evidence demonstrates that long noncoding RNAs (lncRNAs) are involved in the progression of various cancers, including hepatocellular carcinoma (HCC). The role of nuclear-enriched abundant transcript 1 (NEAT1), an essential lncRNA for the formation of nuclear body paraspeckles, has not been fully explored in HCC. We aimed to determine the expression, roles and functional mechanisms of NEAT1 in the proliferation and invasion of HCC. Based on real-time polymerase chain reaction data, we suggest that NEAT1 is upregulated in HCC tissues compared with noncancerous liver tissues. The knockdown of NEAT1 altered global gene expression patterns and reduced HCC cell proliferation, invasion and migration. RNA immunoprecipitation and RNA pull-down assays confirmed that U2AF65 binds to NEAT1. Furthermore, the study indicated that NEAT1 regulated hnRNP A2 expression and that this regulation may be associated with the NEAT1–U2AF65 protein complex. Thus, the NEAT1-hnRNP A2 regulation mechanism promotes HCC pathogenesis and may provide a potential target for the prognosis and treatment of HCC.

Keywords: long noncoding RNA, NEAT1, RNA-binding protein, HCC

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