PMID- 32196930 OWN - NLM STAT- MEDLINE DCOM- 20211112 LR - 20211112 IS - 1521-6551 (Electronic) IS - 1521-6543 (Linking) VI - 72 IP - 7 DP - 2020 Jul TI - Lack of miR-1246 in small extracellular vesicle blunts tumorigenesis of laryngeal carcinoma cells by regulating Cyclin G2. PG - 1491-1503 LID - 10.1002/iub.2274 [doi] AB - Small extracellular vesicle (sEV) has precise impacts on tumor microenvironment and play vital functions in intercellular interaction. However, the functional role of sEV miRNA on laryngeal squamous cell carcinoma (LSCC) is largely unresolved. Here, the expression of miR-1246 in LSCC tissues and plasma sEV was examined. The internalization ability of sEV was determined by uptake assay. Then, the source and purity of sEV were checked through RNase and/or pharmacological inhibitors application. The invasion, migration, proliferation, and cell cycle assays were used to determine the altered abilities of miR-1246 in sEV in LSCC. Finally, target gene of miR-1246, Cyclin G2 (CCNG2), was stained immunohistochemically. In addition, the relationship between CCNG2 and clinicopathological features of patients was analyzed. We found that miR-1246 was higher in LSCC tissues and plasma sEV. MiR-1246 was enriched in sEV rather than soluble form. SEV could be internalized into adjacent cells. Lack of miR-1246 in sEV abrogated the tumorigenesis of LSCC. Furthermore, CCNG2 knockdown arrested the cell cycle and correlated to clinicopathological features and prognosis of LSCC patients. Taken together, we found that the function of sEV miR-1246 by regulating CCNG2 is responsible for LSCC advancement with emphasis on the main source of miR-1246 mainly root in sEV rather than in soluble form. CI - (c) 2020 International Union of Biochemistry and Molecular Biology. FAU - Huang, Qiang AU - Huang Q AUID- ORCID: 0000-0002-5455-9454 AD - Department of Otorhinolaryngology-Head and Neck Surgery, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China. FAU - Hsueh, Chi-Yao AU - Hsueh CY AD - Department of Otorhinolaryngology-Head and Neck Surgery, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China. FAU - Guo, Yang AU - Guo Y AD - Department of Otorhinolaryngology-Head and Neck Surgery, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China. FAU - Wu, Xiu-Fa AU - Wu XF AD - Department of Otorhinolaryngology-Head and Neck Surgery, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China. FAU - Li, Jiao-Yu AU - Li JY AD - Department of Pediatric, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China. FAU - Zhou, Liang AU - Zhou L AD - Department of Otorhinolaryngology-Head and Neck Surgery, Eye, Ear, Nose, and Throat Hospital, Fudan University, Shanghai, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200320 PL - England TA - IUBMB Life JT - IUBMB life JID - 100888706 RN - 0 (Biomarkers, Tumor) RN - 0 (Cyclin G2) RN - 0 (MIRN1246 microRNA, human) RN - 0 (MicroRNAs) SB - IM MH - Aged MH - Apoptosis MH - Biomarkers, Tumor/genetics/*metabolism MH - Carcinogenesis/genetics/metabolism/*pathology MH - Carcinoma, Squamous Cell/genetics/metabolism/*pathology MH - Cell Cycle MH - Cell Movement MH - Cell Proliferation MH - Cyclin G2/genetics/*metabolism MH - *Gene Expression Regulation, Neoplastic MH - Humans MH - Laryngeal Neoplasms/genetics/metabolism/*pathology MH - MicroRNAs/*genetics MH - Neoplasm Invasiveness MH - Prognosis MH - Survival Rate MH - Tumor Cells, Cultured OTO - NOTNLM OT - CCNG2 OT - head and neck cancer OT - laryngeal carcinoma OT - miR-1246 OT - sEV EDAT- 2020/03/21 06:00 MHDA- 2021/11/16 06:00 CRDT- 2020/03/21 06:00 PHST- 2020/02/03 00:00 [received] PHST- 2020/02/27 00:00 [revised] PHST- 2020/03/03 00:00 [accepted] PHST- 2020/03/21 06:00 [pubmed] PHST- 2021/11/16 06:00 [medline] PHST- 2020/03/21 06:00 [entrez] AID - 10.1002/iub.2274 [doi] PST - ppublish SO - IUBMB Life. 2020 Jul;72(7):1491-1503. doi: 10.1002/iub.2274. Epub 2020 Mar 20.