PMID- 31384171 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220409 IS - 1475-2867 (Print) IS - 1475-2867 (Electronic) IS - 1475-2867 (Linking) VI - 19 DP - 2019 TI - Upregulation of circFLNA contributes to laryngeal squamous cell carcinoma migration by circFLNA-miR-486-3p-FLNA axis. PG - 196 LID - 10.1186/s12935-019-0924-9 [doi] LID - 196 AB - BACKGROUND: Accumulating evidence shows that circular RNAs (circRNAs) plays vital roles in tumor progression. However, the biological functions of circRNAs in laryngeal squamous cell carcinoma (LSCC) metastasis is still unclear. METHODS: qRT-PCR was used to detect circFLNA, miRNAs and FLNA mRNA expression. Transwell assay and western blot were performed to evaluate cell migration ability and to detect FLNA, MMP2 and MLK1 protein expression, respectively. RNA pull-down analysis was used to find the binding-miRNAs of circFLNA. Luciferase reporter assay was used to examine the effect of circFLNA on miRNAs and miR-486-3p on FLNA expression. RESULTS: In this study, we confirmed that a Filamin A (FLNA)-derived hsa_circ_0092012 known as circFLNA, was upregulated in LSCC, and the higher expression of circFLNA was correlated with LSCC lymph node metastasis. Increased circFLNA facilitates LSCC cell migration ability through upregulating FLNA and MMP2 protein expression. Mechanistically, we find that circFLNA sponges miR-486-3p in LSCC cells, relieving miR-486-3p-induced repression of FLNA which promotes LSCC cell migration. Accordingly, FLNA mRNA is overexpressed in LSCC tissues and a higher FLNA level is correlated with poor survival. Dysregulation of the circFLNA/miR-486-3p/FLNA regulatory pathway contributes to LSCC migration. CONCLUSIONS: In summary, our study sheds light on the regulatory mechanism of circFLNA in LSCC migration via sponging miR-486-3p, which downregulates the FLNA protein expression. Targeting circFLNA/miR-486-3p/FLAN axis provides a potential therapeutic target for aggressive LSCC. FAU - Wang, Jian-Xing AU - Wang JX AD - 1Department of Pathology, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, 050017 People's Republic of China. ISNI: 0000 0004 1760 8442. GRID: grid.256883.2 AD - 2Department of Otolaryngology, The Second Hospital of Hebei Medical University, 215 Heping West Road, Shijiazhuang, 050000 People's Republic of China. ISNI: 0000 0004 1804 3009. GRID: grid.452702.6 FAU - Liu, Yan AU - Liu Y AD - 1Department of Pathology, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, 050017 People's Republic of China. ISNI: 0000 0004 1760 8442. GRID: grid.256883.2 AD - 3Department of Anesthesiology, The 4th Hospital of Hebei Medical University, 169 Tianshan Street, 050000 Shijiazhuang, People's Republic of China. ISNI: 0000 0004 1760 8442. GRID: grid.256883.2 FAU - Jia, Xin-Ju AU - Jia XJ AD - 4Departmen of Endocrinology, The First Hospital of Hebei Medical University, 89 Donggang Road, Shijiazhuang, 050000 People's Republic of China. GRID: grid.452458.a FAU - Liu, Shu-Xia AU - Liu SX AD - 2Department of Otolaryngology, The Second Hospital of Hebei Medical University, 215 Heping West Road, Shijiazhuang, 050000 People's Republic of China. ISNI: 0000 0004 1804 3009. GRID: grid.452702.6 FAU - Dong, Jin-Hui AU - Dong JH AD - 2Department of Otolaryngology, The Second Hospital of Hebei Medical University, 215 Heping West Road, Shijiazhuang, 050000 People's Republic of China. ISNI: 0000 0004 1804 3009. GRID: grid.452702.6 FAU - Ren, Xiu-Min AU - Ren XM AD - 2Department of Otolaryngology, The Second Hospital of Hebei Medical University, 215 Heping West Road, Shijiazhuang, 050000 People's Republic of China. ISNI: 0000 0004 1804 3009. GRID: grid.452702.6 FAU - Xu, Ou AU - Xu O AD - 2Department of Otolaryngology, The Second Hospital of Hebei Medical University, 215 Heping West Road, Shijiazhuang, 050000 People's Republic of China. ISNI: 0000 0004 1804 3009. GRID: grid.452702.6 FAU - Zhang, Hai-Zhong AU - Zhang HZ AD - 2Department of Otolaryngology, The Second Hospital of Hebei Medical University, 215 Heping West Road, Shijiazhuang, 050000 People's Republic of China. ISNI: 0000 0004 1804 3009. GRID: grid.452702.6 FAU - Duan, Hui-Jun AU - Duan HJ AD - 1Department of Pathology, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang, 050017 People's Republic of China. ISNI: 0000 0004 1760 8442. GRID: grid.256883.2 FAU - Shan, Chun-Guang AU - Shan CG AD - 2Department of Otolaryngology, The Second Hospital of Hebei Medical University, 215 Heping West Road, Shijiazhuang, 050000 People's Republic of China. ISNI: 0000 0004 1804 3009. GRID: grid.452702.6 LA - eng PT - Journal Article DEP - 20190729 PL - England TA - Cancer Cell Int JT - Cancer cell international JID - 101139795 PMC - PMC6664525 OTO - NOTNLM OT - FLNA OT - Laryngeal squamous cell carcinoma OT - Migration OT - circRNAs OT - miRNA COIS- Competing interestsThe authors declare that they have no competing interests. EDAT- 2019/08/07 06:00 MHDA- 2019/08/07 06:01 PMCR- 2019/07/29 CRDT- 2019/08/07 06:00 PHST- 2019/04/23 00:00 [received] PHST- 2019/07/22 00:00 [accepted] PHST- 2019/08/07 06:00 [entrez] PHST- 2019/08/07 06:00 [pubmed] PHST- 2019/08/07 06:01 [medline] PHST- 2019/07/29 00:00 [pmc-release] AID - 924 [pii] AID - 10.1186/s12935-019-0924-9 [doi] PST - epublish SO - Cancer Cell Int. 2019 Jul 29;19:196. doi: 10.1186/s12935-019-0924-9. eCollection 2019.