PMID- 35987447 OWN - NLM STAT- MEDLINE DCOM- 20220908 LR - 20221013 IS - 1096-1194 (Electronic) IS - 0890-8508 (Linking) VI - 65 DP - 2022 Oct TI - TM4SF19-AS1 facilitates the proliferation of lung squamous cell carcinoma by recruiting WDR5 to mediate TM4SF19. PG - 101849 LID - S0890-8508(22)00060-3 [pii] LID - 10.1016/j.mcp.2022.101849 [doi] AB - BACKGROUND: As reported, long non-coding RNAs are a pivotal player in lung squamous cell carcinoma (LSCC) progression. We noticed the remarkably upregulated transmembrane-4-l-six-family-19 antisense RNA 1 (TM4SF19-AS1) in LSCC and further demonstrated the function it played in LSCC and the possible molecular mechanism. METHODS: Via bioinformatics approach, we evaluated TM4SF19-AS1 and TM4SF19 levels in LSCC tissue, and real-time quantitative polymerase chain reaction (qRT-PCR) and Western blot revealed their mRNA and protein levels in LSCC cells. Cell Counting Kit-8 and colony formation assays analyzed the proliferation ability of LSCC cells, and cell adhesion ability was detected via cell adhesion assay. RNA immunoprecipitation and chromatin immunoprecipitation analyzed the underlying mechanism of TM4SF19-AS1 regulating its target, while methylation-specific PCR indicated the methylation level of TM4SF19-AS1. RESULTS: TM4SF19-AS1 was markedly upregulated in LSCC. Functional assays revealed that TM4SF19-AS1 could facilitate the proliferation and adhesion of LSCC. Besides, we revealed the mechanism of TM4SF19-AS1 regulation that it directly bound to WD repeat-containing protein 5 (WDR5), and was then recruited to TM4SF19 promoter region, which activated DNA demethylation, thereby suppressing malignant LSCC progression. CONCLUSION: Our research demonstrated that TM4SF19-AS1 affected LSCC cell proliferation by recruiting WDR5 to manipulate transmembrane-4-lsix-family-member-19 (TM4SF19), which offers a new observation on LSCC pathogenesis, indicating that TM4SF19-AS1 is able to be a promising target for LSCC treatment. CI - Copyright (c) 2022 Elsevier Ltd. All rights reserved. FAU - Luo, Machang AU - Luo M AD - Department of Respiratory and Critical Care Medicine, The First Hospital of Longyan Affiliated to Fujian Medical University, Longyan City, Fujian Province, 364000, China. FAU - Xie, Lingyan AU - Xie L AD - Department of Respiratory and Critical Care Medicine, The First Hospital of Longyan Affiliated to Fujian Medical University, Longyan City, Fujian Province, 364000, China. FAU - Su, Yonghua AU - Su Y AD - Department of Respiratory and Critical Care Medicine, The First Hospital of Longyan Affiliated to Fujian Medical University, Longyan City, Fujian Province, 364000, China. FAU - Zhang, Kaijun AU - Zhang K AD - Department of Respiratory and Critical Care Medicine, The First Hospital of Longyan Affiliated to Fujian Medical University, Longyan City, Fujian Province, 364000, China. FAU - Liang, Rongzhang AU - Liang R AD - Department of Respiratory and Critical Care Medicine, The First Hospital of Longyan Affiliated to Fujian Medical University, Longyan City, Fujian Province, 364000, China. FAU - Ma, Zhiyi AU - Ma Z AD - Department of Respiratory and Critical Care Medicine, The First Hospital of Longyan Affiliated to Fujian Medical University, Longyan City, Fujian Province, 364000, China. FAU - Li, Youtang AU - Li Y AD - Department of Respiratory and Critical Care Medicine, The First Hospital of Longyan Affiliated to Fujian Medical University, Longyan City, Fujian Province, 364000, China. Electronic address: lyongt1@163.com. LA - eng PT - Journal Article DEP - 20220818 PL - England TA - Mol Cell Probes JT - Molecular and cellular probes JID - 8709751 RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (MicroRNAs) RN - 0 (RNA, Long Noncoding) RN - 0 (Tetraspanins) RN - 0 (WDR5 protein, human) SB - IM MH - *Carcinoma, Non-Small-Cell Lung/genetics MH - *Carcinoma, Squamous Cell/genetics/metabolism MH - Cell Line, Tumor MH - Cell Proliferation/genetics MH - Gene Expression Regulation, Neoplastic MH - Humans MH - Intracellular Signaling Peptides and Proteins/genetics/metabolism MH - Lung/metabolism MH - *Lung Neoplasms/genetics MH - *MicroRNAs/genetics MH - *RNA, Long Noncoding/genetics/metabolism MH - Tetraspanins OTO - NOTNLM OT - Adhesion OT - Lung squamous cell carcinoma OT - Proliferation OT - TM4SF19 OT - TM4SF19-AS1 OT - WDR5 COIS- Declaration of competing interest The authors report no conflict of interest. EDAT- 2022/08/21 06:00 MHDA- 2022/09/09 06:00 CRDT- 2022/08/20 19:34 PHST- 2022/06/13 00:00 [received] PHST- 2022/08/02 00:00 [revised] PHST- 2022/08/03 00:00 [accepted] PHST- 2022/08/21 06:00 [pubmed] PHST- 2022/09/09 06:00 [medline] PHST- 2022/08/20 19:34 [entrez] AID - S0890-8508(22)00060-3 [pii] AID - 10.1016/j.mcp.2022.101849 [doi] PST - ppublish SO - Mol Cell Probes. 2022 Oct;65:101849. doi: 10.1016/j.mcp.2022.101849. Epub 2022 Aug 18.