PMID- 30811870 OWN - NLM STAT- MEDLINE DCOM- 20200515 LR - 20200515 IS - 1521-6551 (Electronic) IS - 1521-6543 (Linking) VI - 71 IP - 9 DP - 2019 Sep TI - Long noncoding RNA SOX2-OT facilitates laryngeal squamous cell carcinoma development by epigenetically inhibiting PTEN via methyltransferase EZH2. PG - 1230-1239 LID - 10.1002/iub.2026 [doi] AB - Long noncoding RNAs (lncRNAs) play important roles in the initiation and progression of various cancers, including laryngeal squamous cell carcinoma (LSCC). Recently, lncRNA Sox2 overlapping transcript (SOX2-OT) has been identified as an oncogene in various cancers. However, the functional role and the regulatory mechanism of SOX2-OT in LSCC remains unclear. In this study, we found that SOX2-OT expression was increased and negatively correlated with PTEN expression in LSCC tissues. Furthermore, SOX2-OT overexpression promoted LSCC cell proliferation, migration, invasion, and suppressed cell apoptosis in vitro, as well as facilitated the in vivo tumorigenicity. By contrast, SOX2-OT silencing exerted the opposite effect. Mechanically, SOX2-OT interacted with EZH2 and recruited EZH2 to induce H3K27me3 and epigenetically inhibited PTEN expression in LSCC cells. Additionally, EZH2 silencing and PTEN overexpression significantly abrogated the SOX2-OT overexpression-mediated promotion of LSCC cell malignant behavior. Collectively, our findings demonstrate that SOX2-OT inhibits PTEN expression to facilitate LSCC development through EZH2-mediated H3K27me3. (c) 2019 IUBMB Life, 71(9):1230-1239, 2019. CI - (c) 2019 International Union of Biochemistry and Molecular Biology. FAU - Tai, Yong AU - Tai Y AD - Department of Otorhinolaryngology, Henan Provincial People's Hospital, Henan University, Zhengzhou, 450003, China. FAU - Ji, Yuzi AU - Ji Y AD - Department of Otorhinolaryngology, Henan Provincial People's Hospital, Henan University, Zhengzhou, 450003, China. FAU - Liu, Fei AU - Liu F AD - Department of Otorhinolaryngology, Henan Provincial People's Hospital, Henan University, Zhengzhou, 450003, China. FAU - Zang, Yanzi AU - Zang Y AD - Department of Otorhinolaryngology, Henan Provincial People's Hospital, Henan University, Zhengzhou, 450003, China. FAU - Xu, Dingyuan AU - Xu D AD - Department of Otorhinolaryngology, Henan Provincial People's Hospital, Henan University, Zhengzhou, 450003, China. FAU - Ma, Song AU - Ma S AD - Department of Otorhinolaryngology, Henan Provincial People's Hospital, Henan University, Zhengzhou, 450003, China. FAU - Qin, Litao AU - Qin L AD - Department of Otorhinolaryngology, Henan Provincial People's Hospital, Henan University, Zhengzhou, 450003, China. FAU - Ma, Jiqing AU - Ma J AUID- ORCID: 0000-0003-2967-1740 AD - Department of Otorhinolaryngology, Henan Provincial People's Hospital, Henan University, Zhengzhou, 450003, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190227 PL - England TA - IUBMB Life JT - IUBMB life JID - 100888706 RN - 0 (RNA, Long Noncoding) RN - EC 1.14.11.- (Jumonji Domain-Containing Histone Demethylases) RN - EC 2.1.1.43 (EZH2 protein, human) RN - EC 2.1.1.43 (Enhancer of Zeste Homolog 2 Protein) RN - EC 3.1.3.67 (PTEN Phosphohydrolase) RN - EC 3.1.3.67 (PTEN protein, human) SB - IM MH - Animals MH - Apoptosis/genetics MH - Carcinoma, Squamous Cell/*genetics/pathology MH - Cell Line, Tumor MH - Cell Proliferation/genetics MH - Enhancer of Zeste Homolog 2 Protein/*genetics MH - Epigenesis, Genetic/genetics MH - Female MH - Gene Expression Regulation, Neoplastic/genetics MH - Humans MH - Jumonji Domain-Containing Histone Demethylases/genetics MH - Laryngeal Neoplasms/*genetics/pathology MH - Male MH - Mice MH - PTEN Phosphohydrolase/*genetics MH - RNA, Long Noncoding/genetics MH - Transplantation, Heterologous OTO - NOTNLM OT - EZH2 OT - H3K27me3 OT - PTEN OT - SOX2-OT OT - laryngeal squamous cell carcinoma EDAT- 2019/02/28 06:00 MHDA- 2020/05/16 06:00 CRDT- 2019/02/28 06:00 PHST- 2019/01/22 00:00 [received] PHST- 2019/02/05 00:00 [accepted] PHST- 2019/02/28 06:00 [pubmed] PHST- 2020/05/16 06:00 [medline] PHST- 2019/02/28 06:00 [entrez] AID - 10.1002/iub.2026 [doi] PST - ppublish SO - IUBMB Life. 2019 Sep;71(9):1230-1239. doi: 10.1002/iub.2026. Epub 2019 Feb 27.