PMID- 31360066 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220409 IS - 1178-6930 (Print) IS - 1178-6930 (Electronic) IS - 1178-6930 (Linking) VI - 12 DP - 2019 TI - Long noncoding RNA DLEU1 aggravates glioma progression via the miR-421/MEF2D axis. PG - 5405-5414 LID - 10.2147/OTT.S207542 [doi] AB - BACKGROUND: Long noncoding RNA (lncRNA) deleted in lymphocytic leukemia 1 (DLEU1) was reported to be involved in the development and progression of multiple cancers. However, the accurate expression pattern, biological function and potential molecular mechanism of DLEU1 in glioma are not yet known. The present study investigated the role of DLEU in the development and progression of glioma, as well as the potential mechanism played by DLEU1 in glioma. MATERIALS AND METHODS: The levels of DLEUI in glioma tissues and cell lines were examined using quantitative real-time PCR. The potential effects of DLEU1 on the proliferation, mobility, invasion and apoptosis of glioma cells were evaluated using corresponding in vitro experiments. The association between DLEU1 and microRNA (miR)-421 was also determined using luciferase reporter activity and RNA immunoprecipitation (RIP) assays. RESULTS: The results revealed that DLEU1 was significantly upregulated in glioma tissues and cell lines. Increased DLEU1 was positively associated with the high-grade carcinoma (III-IV). Functional studies revealed that knockdown of DLEU1 expression by siRNA led to decreased proliferation, migration and invasion and increased apoptosis in human glioma cells. Furthermore, luciferase reporter activity and RIP assays confirmed that DLEUI could act as a competing endogenous RNA (ceRNA) for miR-421 that functioned as a tumor suppressor in glioma. Moreover, inhibition miR-421 partially restored the effect of DLEU1 knockdown on the glioma cells. DLEU1 could regulate myocyte enhancer factor 2D (MEF2D) expression, a known target of miR-421 in glioma cells. CONCLUSION: Taken together, these findings suggested that DLEU1 regulated MEF2D expression to promote glioma progression by sponging miR-421 and that DLEU1 might be a potential therapeutic target for glioma. FAU - Feng, Li AU - Feng L AD - Department of Radiotherapy, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China. FAU - He, Mingyuan AU - He M AD - Department of Radiotherapy, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China. FAU - Rao, Min AU - Rao M AD - Department of Gastroenterology, The First Hospital of Jilin University, Changchun 130021, People's Republic of China. FAU - Diao, Jiandong AU - Diao J AD - Department of Oncology and Hematology, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China. FAU - Zhu, Yonggang AU - Zhu Y AD - Department of Radiotherapy, China-Japan Union Hospital of Jilin University, Changchun 130033, People's Republic of China. LA - eng PT - Journal Article PT - Retracted Publication DEP - 20190708 PL - New Zealand TA - Onco Targets Ther JT - OncoTargets and therapy JID - 101514322 RIN - Onco Targets Ther. 2021 Sep 09;14:4735-4736. PMID: 34526776 PMC - PMC6625645 OTO - NOTNLM OT - DLEU1 OT - LncRNA OT - MEF2D OT - glioma OT - miR-421 COIS- The authors report no conflicts of interest in this work. EDAT- 2019/07/31 06:00 MHDA- 2019/07/31 06:01 PMCR- 2019/07/08 CRDT- 2019/07/31 06:00 PHST- 2019/03/04 00:00 [received] PHST- 2019/06/05 00:00 [accepted] PHST- 2019/07/31 06:00 [entrez] PHST- 2019/07/31 06:00 [pubmed] PHST- 2019/07/31 06:01 [medline] PHST- 2019/07/08 00:00 [pmc-release] AID - 207542 [pii] AID - 10.2147/OTT.S207542 [doi] PST - epublish SO - Onco Targets Ther. 2019 Jul 8;12:5405-5414. doi: 10.2147/OTT.S207542. eCollection 2019.