PMID- 31960744 OWN - NLM STAT- MEDLINE DCOM- 20201201 LR - 20220413 IS - 1724-6008 (Electronic) IS - 0393-6155 (Linking) VI - 35 IP - 1 DP - 2020 Mar TI - Regulating of cell cycle progression by the lncRNA CDKN2B-AS1/miR-324-5p/ROCK1 axis in laryngeal squamous cell cancer. PG - 47-56 LID - 10.1177/1724600819898489 [doi] AB - OBJECTIVE: To evaluate the function of long non-coding RNA ANRIL (CDKN2B-AS1) in laryngeal squamous cell cancer (LSCC), and to explore the underlying mechanism. METHODS: The expression levels of CDKN2B-AS1 in LSCC tissues and cell lines (Tu177, HN4, AMC-HN-8 and NP69) were determined by reverse transcription quantitative PCR (RT-qPCR). AMC-HN-8 cells were then transfected with siRNAs of CDKN2B-AS1. The effects of CDKN2B-AS1 on cell proliferation, cell cycle, and apoptotic protein were determined by CCK-8 assay, flow cytometry analysis, and western blot, respectively. Dual luciferase reporter assay and RNA immunoprecipitation (RIP) assay were employed to verify the targets of CDKN2B-AS1. The miR-324-5p mimics or miR-324-5p inhibitor and ROCK1 over-expression plasmids were also transfected into AMC-HN-8 cells for further analysis. RESULTS: CDKN2B-AS1 was upregulated in LSCC tissues, and the upregulation of CDKN2B-AS1 was correlated with overall survival, advanced clinical stage, and lymph node metastasis. In AMC-HN-8 cells, the knockdown of CDKN2B-AS1 by siRNA inhibited cell viability, blocked cell cycle in G1 phase, and increased the expression levels of cyclin-dependent kinase inhibitor 1A (p21), cleaved caspase3, and cleaved PPoly (ADP-Ribose) polymerase 1. Results of dual luciferase reporter assay showed that miR-324-5p could bind to CDKN2B-AS1 or Rho-associated coiled-coil containing protein kinase 1 (ROCK1). Finally, over-expression of ROCK1 in AMC-HN-8 cells revised the inhibitory effect of CDKN2B-AS1 siRNA on cell growth. DISCUSSION: The upregulation of CDKN2B-AS1 was correlated with overall survival, advanced clinical stage, and lymph node metastasis and promoted LSCC cell growth via miR-324-5p/ROCK1 axis. FAU - Liu, Feifei AU - Liu F AD - Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China. AD - Department of Otolaryngology-Head and Neck Surgery, Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong Province, China. FAU - Xiao, Yang AU - Xiao Y AD - Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China. FAU - Ma, Lijing AU - Ma L AD - Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China. FAU - Wang, Jun AU - Wang J AUID- ORCID: 0000-0002-6387-5926 AD - Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China. LA - eng PT - Journal Article DEP - 20200121 PL - United States TA - Int J Biol Markers JT - The International journal of biological markers JID - 8712411 RN - 0 (Biomarkers, Tumor) RN - 0 (CDKN2B antisense RNA, human) RN - 0 (MIRN324 microRNA, human) RN - 0 (MicroRNAs) RN - 0 (RNA, Long Noncoding) RN - EC 2.7.11.1 (ROCK1 protein, human) RN - EC 2.7.11.1 (rho-Associated Kinases) SB - IM MH - Base Sequence MH - Biomarkers, Tumor/genetics/metabolism MH - Cell Cycle/physiology MH - Cell Growth Processes/physiology MH - Cell Line, Tumor MH - Gene Knockdown Techniques MH - HEK293 Cells MH - Humans MH - Laryngeal Neoplasms/genetics/*metabolism/pathology MH - MicroRNAs/biosynthesis/genetics/*metabolism MH - RNA, Long Noncoding/biosynthesis/genetics/*metabolism MH - Signal Transduction MH - Squamous Cell Carcinoma of Head and Neck/genetics/*metabolism/pathology MH - Up-Regulation MH - rho-Associated Kinases/genetics/*metabolism OTO - NOTNLM OT - CDKN2B-AS1 OT - ROCK1 OT - cell growth OT - laryngeal squamous cell cancer OT - miR-324-5P EDAT- 2020/01/22 06:00 MHDA- 2020/12/02 06:00 CRDT- 2020/01/22 06:00 PHST- 2020/01/22 06:00 [pubmed] PHST- 2020/12/02 06:00 [medline] PHST- 2020/01/22 06:00 [entrez] AID - 10.1177/1724600819898489 [doi] PST - ppublish SO - Int J Biol Markers. 2020 Mar;35(1):47-56. doi: 10.1177/1724600819898489. Epub 2020 Jan 21.