PMID- 38321126 OWN - NLM STAT- MEDLINE DCOM- 20240208 LR - 20240210 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 14 IP - 1 DP - 2024 Feb 6 TI - IGF2BP2-m6A-circMMP9 axis recruits ETS1 to promote TRIM59 transcription in laryngeal squamous cell carcinoma. PG - 3014 LID - 10.1038/s41598-024-53422-4 [doi] LID - 3014 AB - Laryngeal squamous cell carcinoma (LSCC) is a common malignancy of the head and neck. Recently, circular RNA (circRNA) has been studied extensively in multisystem diseases. However, there are few research on biological functions and molecular mechanisms of circRNAs in LSCC. CircRNA array was used to detect the differentially expressed circRNAs. Kaplan-Meier and cox regression analysis were used to identify survival based on circMMP9. The qRT-PCR, RNase R treatment, sanger sequencing and in situ hybridization were used to verify circMMP9 expression, characteristics and localization in LSCC tissues and cells. Functionally, colony formation, MTS, transwell and in vivo assays were proceeded to detect the biological function of circMMP9 in LSCC progression. The RNA-seq was conducted to identify the molecular targets of circMMP9. Mechanically, MeRIP, RNA Immunoprecipitation (RIP), RNA pulldown, Chromatin immunoprecipitation (ChIP) and dual-luciferase reporter assays were carried on to verify the regulatory mechanism of circMMP9. CircMMP9 was discovered upregulated in LSCC tissues and cells, and high level of circMMP9 was associated with poor prognosis, low degree of pathological grading, high TNM stage and lymph node metastasis of LSCC. CircMMP9 knockdown prevented LSCC progression both in vitro and in vivo, whereas, circMMP9 overexpression had the opposite effect. CircMMP9 was stabilized by IGF2BP2 in m6A-dependent manner. TRIM59 was identified as downstream target of circMMP9. CircMMP9 recruited ETS1 to stimulate TRIM59 transcription. Moreover, TRIM59 accelerated LSCC progression via activating the PI3K/AKT signal pathway. Our findings offered a unique regulatory mechanism for circMMP9 in LSCC, as well as a novel proof that circMMP9 may be utilize as a diagnostic marker and therapeutic target for LSCC patients. CI - (c) 2024. The Author(s). FAU - Li, Jinling AU - Li J AD - Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China. FAU - Cao, Huan AU - Cao H AD - Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China. FAU - Yang, Jianwang AU - Yang J AD - Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China. FAU - Wang, Baoshan AU - Wang B AD - Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China. hebwangbs@163.com. LA - eng GR - 81972553/Project of National Natural Science Foundation of China/ GR - H2022206376/The Natural Science Foundation of Hebei Province/ GR - 20577716D/Special Project of Clinical Medical Research Center of Department of Science and Technology of Hebei Province/ PT - Journal Article DEP - 20240206 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (MicroRNAs) RN - 0 (RNA, Circular) RN - W7IBY2BGAX (6-methyladenine) RN - EC 2.7.1.- (Phosphatidylinositol 3-Kinases) RN - 0 (ETS1 protein, human) RN - 0 (Proto-Oncogene Protein c-ets-1) RN - 0 (IGF2BP2 protein, human) RN - 0 (RNA-Binding Proteins) RN - 0 (TRIM59 protein, human) RN - 0 (Tripartite Motif Proteins) RN - JAC85A2161 (Adenine) RN - 0 (Intracellular Signaling Peptides and Proteins) SB - IM MH - Humans MH - Squamous Cell Carcinoma of Head and Neck/genetics MH - *MicroRNAs/genetics MH - RNA, Circular/genetics MH - Phosphatidylinositol 3-Kinases/metabolism MH - *Carcinoma, Squamous Cell/pathology MH - *Laryngeal Neoplasms/pathology MH - *Head and Neck Neoplasms/genetics MH - Cell Proliferation/genetics MH - Gene Expression Regulation, Neoplastic MH - Cell Line, Tumor MH - Proto-Oncogene Protein c-ets-1/genetics MH - RNA-Binding Proteins/metabolism MH - *Tripartite Motif Proteins MH - Adenine/*analogs & derivatives MH - *Intracellular Signaling Peptides and Proteins PMC - PMC10847447 COIS- The authors declare no competing interests. EDAT- 2024/02/07 00:42 MHDA- 2024/02/08 06:42 PMCR- 2024/02/06 CRDT- 2024/02/06 23:22 PHST- 2023/10/11 00:00 [received] PHST- 2024/01/31 00:00 [accepted] PHST- 2024/02/08 06:42 [medline] PHST- 2024/02/07 00:42 [pubmed] PHST- 2024/02/06 23:22 [entrez] PHST- 2024/02/06 00:00 [pmc-release] AID - 10.1038/s41598-024-53422-4 [pii] AID - 53422 [pii] AID - 10.1038/s41598-024-53422-4 [doi] PST - epublish SO - Sci Rep. 2024 Feb 6;14(1):3014. doi: 10.1038/s41598-024-53422-4.