PMID- 33550476 OWN - NLM STAT- MEDLINE DCOM- 20210423 LR - 20220531 IS - 1434-4726 (Electronic) IS - 0937-4477 (Linking) VI - 278 IP - 5 DP - 2021 May TI - LncRNA FEZF1-AS1 accelerates the migration and invasion of laryngeal squamous cell carcinoma cells through miR-4497 targeting GBX2. PG - 1523-1535 LID - 10.1007/s00405-021-06636-5 [doi] AB - BACKGROUND: MiR-4497 has been previously proved to exert an anti-cancer role in laryngeal squamous cell carcinoma (LSCC) by negatively regulating gastrulation brain homeobox 2 (GBX2). However, the mechanism of miR-4497 in LSCC has yet to be fully elucidated. This study intended to investigate the role of FEZF1-AS1 in the migration and invasion of LSCC cells and clarified its mechanism through miR-4497 and GBX2. METHODS: qPCR evaluated the expression of FEZF1-AS1, miR-4497 and GBX2 in LSCC tissues and cells, compared with controls. Western blotting analyzed GBX2, E-cadherin, N-cadherin and Vimentin. CCK8, wound healing and transwell assays assessed the viability, migration and invasion of TU686 and UM-SCC-17A cells. Luciferase reporter assay affirmed the interplay of miR-4497 with FEZF1-AS1 or GBX2 and Pearson's correlation analysis explored the association between each two genes in both tumor and non-tumor tissues. RESULTS: FEZF1-AS1 was highly expressed in LSCC tissues and cells. Silence or elevation of FEZF1-AS1 inhibited or promoted the migration and invasion of TU686 and UM-SCC-17A cells. FEZF1-AS1 targeted and negatively modulated miR-4497. Inhibition of miR-4497 markedly restored the FEZF1-AS1 silence-repressed cell viability of TU686 and UM-SCC-17A cells. Further, FEZF1-AS1 could positively regulate GBX2 via negative regulation of miR-4497. In these two cells, GBX2 deficiency reversed the promoting impacts of miR-4497 repression on migration and invasion. CONCLUSION: Taken together, FEZF1-AS1, heightened in LSCC tissues and cells, promotes cell migration and invasion of LSCC cells via targeting miR-4497 that inhibits GBX2. The finding may offer new options for the treatment of this cancer. FAU - Chen, Xudong AU - Chen X AUID- ORCID: 0000-0002-1673-4696 AD - Department of Otolaryngology, First Hospital of Ningbo City, Ningbo, Zhejiang, 315000, People's Republic of China. chenxudong_xdc@163.com. FAU - Cheng, Peng AU - Cheng P AD - Department of Otolaryngology, First Hospital of Ningbo City, Ningbo, Zhejiang, 315000, People's Republic of China. FAU - Hu, Cihao AU - Hu C AD - Department of Otolaryngology, First Hospital of Ningbo City, Ningbo, Zhejiang, 315000, People's Republic of China. LA - eng GR - 2020360873/the Medical and Health Project of Zhejiang Province/ PT - Journal Article DEP - 20210207 PL - Germany TA - Eur Arch Otorhinolaryngol JT - European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery JID - 9002937 RN - 0 (GBX2 protein, human) RN - 0 (Homeodomain Proteins) RN - 0 (MIRN4497 microRNA, human) RN - 0 (MicroRNAs) RN - 0 (RNA, Long Noncoding) SB - IM MH - Cell Proliferation MH - *Head and Neck Neoplasms MH - Homeodomain Proteins MH - Humans MH - *MicroRNAs/genetics MH - *RNA, Long Noncoding MH - Squamous Cell Carcinoma of Head and Neck/genetics OTO - NOTNLM OT - FEZF1-AS1 OT - GBX2 OT - Invasion OT - Laryngeal squamous cell carcinoma OT - Migration OT - miR-4497 EDAT- 2021/02/08 06:00 MHDA- 2021/04/24 06:00 CRDT- 2021/02/07 20:52 PHST- 2020/10/14 00:00 [received] PHST- 2021/01/20 00:00 [accepted] PHST- 2021/02/08 06:00 [pubmed] PHST- 2021/04/24 06:00 [medline] PHST- 2021/02/07 20:52 [entrez] AID - 10.1007/s00405-021-06636-5 [pii] AID - 10.1007/s00405-021-06636-5 [doi] PST - ppublish SO - Eur Arch Otorhinolaryngol. 2021 May;278(5):1523-1535. doi: 10.1007/s00405-021-06636-5. Epub 2021 Feb 7.