PMID- 37902305 OWN - NLM STAT- MEDLINE DCOM- 20231124 LR - 20240320 IS - 1551-4005 (Electronic) IS - 1538-4101 (Print) IS - 1551-4005 (Linking) VI - 22 IP - 18 DP - 2023 Sep TI - EIF4A3-regulated hsa_circ_0001445 can inhibit the progression of laryngeal squamous cell carcinoma via hsa-miR-432-5p-dependent up-regulation of RGMA expression. PG - 2038-2056 LID - 10.1080/15384101.2023.2274670 [doi] AB - Laryngeal squamous cell carcinoma (LSCC) is a common malignant tumor in the head and neck, the 5-year relative survival rate of patients diagnosed with laryngeal cancer was estimated to be 61% from 2012 to 2018. An increasing number of studies have shown that circular RNAs (circRNAs) play a key role in the occurrence and development of cancer and may function as cancer biomarkers and new therapeutic targets. At present, the research on the relationship between circRNAs and LSCC is still in its infancy and needs further exploration. In this study, we found a circRNA (hsa_circ_0001445) associated with LSCC based on bioinformatics analysis. Quantitative real-time polymerase chain reaction (qRT-PCR) assay indicated that the expression of hsa_circ_0001445 was down-regulated in LSCC tissues and cell lines. Notably, the expression of hsa_circ_0001445 was negatively correlated with aggressive clinicopathological features and poor prognosis. Then, functional experiments found that overexpression of hsa_circ_0001445 inhibited the proliferation, migration and invasion of LSCC cells and tumor growth in vivo. Mechanistically, RNA immunoprecipitation (RIP), biotin-labeled probe pull-down, luciferase reporter assay and western blot experiments were employed and found that EIF4A3 reduced the expression of hsa_circ_0001445, and the direct binding of hsa_circ_0001445 to hsa-miR-432-5p attenuated the inhibitory effect of hsa-miR-432-5p on RGMA. In summary, our research suggests that hsa_circ_0001445 may be used as a potential prognostic biomarker and therapeutic target for LSCC. FAU - Yu, Miaomiao AU - Yu M AD - Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, China. FAU - Cao, Huan AU - Cao H AD - Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, China. FAU - Yang, Jianwang AU - Yang J AD - Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, China. FAU - Liu, Tao AU - Liu T AD - Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, China. FAU - Gao, Jiaxue AU - Gao J AD - Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, China. FAU - Wang, Baoshan AU - Wang B LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20231123 PL - United States TA - Cell Cycle JT - Cell cycle (Georgetown, Tex.) JID - 101137841 RN - 0 (MIRN432 microRNA, human) RN - 0 (RNA, Circular) RN - 0 (MicroRNAs) RN - EC 3.6.1.- (EIF4A3 protein, human) RN - EC 2.7.7.- (Eukaryotic Initiation Factor-4A) RN - EC 3.6.4.13 (DEAD-box RNA Helicases) SB - IM MH - Humans MH - RNA, Circular/genetics/metabolism MH - Squamous Cell Carcinoma of Head and Neck/genetics MH - Up-Regulation/genetics MH - Cell Line, Tumor MH - *MicroRNAs/genetics/metabolism MH - Cell Proliferation/genetics MH - *Head and Neck Neoplasms MH - Gene Expression Regulation, Neoplastic MH - Eukaryotic Initiation Factor-4A/genetics MH - DEAD-box RNA Helicases/metabolism PMC - PMC10761152 OTO - NOTNLM OT - EIF4A3 OT - Laryngeal squamous cell carcinoma OT - RGMA OT - hsa-miR-432-5p OT - hsa_circ_0001445 COIS- No potential conflict of interest was reported by the authors. EDAT- 2023/10/30 12:42 MHDA- 2023/11/24 06:42 PMCR- 2024/11/23 CRDT- 2023/10/30 08:53 PHST- 2024/11/23 00:00 [pmc-release] PHST- 2023/11/24 06:42 [medline] PHST- 2023/10/30 12:42 [pubmed] PHST- 2023/10/30 08:53 [entrez] AID - 2274670 [pii] AID - 10.1080/15384101.2023.2274670 [doi] PST - ppublish SO - Cell Cycle. 2023 Sep;22(18):2038-2056. doi: 10.1080/15384101.2023.2274670. Epub 2023 Nov 23.