PMID- 31207081 OWN - NLM STAT- MEDLINE DCOM- 20200814 LR - 20210311 IS - 1582-4934 (Electronic) IS - 1582-1838 (Print) IS - 1582-1838 (Linking) VI - 23 IP - 8 DP - 2019 Aug TI - Long non-coding RNA deleted in lymphocytic leukaemia 1 promotes hepatocellular carcinoma progression by sponging miR-133a to regulate IGF-1R expression. PG - 5154-5164 LID - 10.1111/jcmm.14384 [doi] AB - Long non-coding RNA (lncRNA) deleted in lymphocytic leukaemia 1 (DLEU1) was reported to be involved in the occurrence and development of multiple cancers. However, the exact expression, biological function and underlying mechanism of DLEU1 in hepatocellular carcinoma (HCC) remain unclear. In this study, real-time quantitative polymerase chain reaction (qRT-PCR) in HCC tissues and cell lines revealed that DLEU1 expression was up-regulated, and the increased DLEU1 was closely associated with advanced tumour-node-metastasis stage, vascular metastasis and poor overall survival. Function experiments showed that knockdown of DLEU1 significantly inhibited HCC cell proliferation, colony formation, migration and invasion, and suppressed epithelial to mesenchymal transition (EMT) process via increasing the expression of E-cadherin and decreasing the expression of N-cadherin and Vimentin. Luciferase reporter gene assay and RNA immunoprecipitation (RIP) assay demonstrated that DLEU1 could sponge miR-133a. Moreover, miR-133a inhibition significantly reversed the suppression effects of DLEU1 knockdown on HCC cells. Besides, we found that silenced DLEU1 significantly decreased insulin-like growth factor 1 receptor (IGF-1R) expression (a target of miR-133a) and its downstream signal PI3K/AKT pathway in HCC cells, while miR-133a inhibitor partially reversed this trend. Furthermore, DLEU1 knockdown impaired tumour growth in vivo by regulating miR-133a/IGF-1R axis. Collectively, these findings indicate that DLEU1 promoted HCC progression by sponging miR-133a to regulate IGF-1R expression. Deleted in lymphocytic leukaemia 1/miR-133a/IGF-1R axis may be a novel target for treatment of HCC. CI - (c) 2019 The Authors. Journal of Cellular and Molecular Medicine published by John Wiley & Sons Ltd and Foundation for Cellular and Molecular Medicine. FAU - Zhang, Wei AU - Zhang W AD - Department of Hepatopancreatobiliary Surgery, The First Hospital of Jilin University, Changchun, P.R. China. FAU - Liu, Songyang AU - Liu S AD - Department of Hepatopancreatobiliary Surgery, The First Hospital of Jilin University, Changchun, P.R. China. FAU - Liu, Kai AU - Liu K AD - Department of Hepatopancreatobiliary Surgery, The First Hospital of Jilin University, Changchun, P.R. China. FAU - Liu, Yahui AU - Liu Y AUID- ORCID: 0000-0003-4698-5370 AD - Department of Hepatopancreatobiliary Surgery, The First Hospital of Jilin University, Changchun, P.R. China. LA - eng PT - Journal Article DEP - 20190617 PL - England TA - J Cell Mol Med JT - Journal of cellular and molecular medicine JID - 101083777 RN - 0 (DLEU1 lncRNA, human) RN - 0 (IGF1R protein, human) RN - 0 (MIRN133 microRNA, human) RN - 0 (MicroRNAs) RN - 0 (RNA, Long Noncoding) RN - 0 (Tumor Suppressor Proteins) RN - EC 2.7.10.1 (Receptor, IGF Type 1) SB - IM MH - Carcinoma, Hepatocellular/*genetics/pathology MH - Cell Line, Tumor MH - Cell Movement/genetics MH - Cell Proliferation/genetics MH - Epithelial-Mesenchymal Transition/genetics MH - Female MH - Gene Expression Regulation, Neoplastic MH - Humans MH - Liver Neoplasms/*genetics/pathology MH - Male MH - MicroRNAs/*genetics MH - Middle Aged MH - RNA, Long Noncoding MH - Receptor, IGF Type 1/*genetics MH - Signal Transduction/genetics MH - Tumor Suppressor Proteins/*genetics PMC - PMC6653240 OTO - NOTNLM OT - DLEU1 OT - IGF-1R OT - LncRNAs OT - PI3K/AKT OT - hepatocellular carcinoma OT - miR-133a COIS- The authors declare that they have no conflict of interest. EDAT- 2019/06/18 06:00 MHDA- 2020/08/15 06:00 PMCR- 2019/08/01 CRDT- 2019/06/18 06:00 PHST- 2018/09/16 00:00 [received] PHST- 2019/03/11 00:00 [revised] PHST- 2019/04/19 00:00 [accepted] PHST- 2019/06/18 06:00 [pubmed] PHST- 2020/08/15 06:00 [medline] PHST- 2019/06/18 06:00 [entrez] PHST- 2019/08/01 00:00 [pmc-release] AID - JCMM14384 [pii] AID - 10.1111/jcmm.14384 [doi] PST - ppublish SO - J Cell Mol Med. 2019 Aug;23(8):5154-5164. doi: 10.1111/jcmm.14384. Epub 2019 Jun 17.