PMID- 35223996 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220301 IS - 2296-889X (Print) IS - 2296-889X (Electronic) IS - 2296-889X (Linking) VI - 9 DP - 2022 TI - N6-Methyladenosine Methylation Regulator RBM15 is a Potential Prognostic Biomarker and Promotes Cell Proliferation in Pancreatic Adenocarcinoma. PG - 842833 LID - 10.3389/fmolb.2022.842833 [doi] LID - 842833 AB - RNA binding motif protein 15 (RBM15) is a key regulatory factor involved in N6-methyladenosine (m6A) methylation. It has been reported that RBM15 plays an important role in the progress of laryngeal squamous cell carcinoma (LSCC), promoting LSCC migration and invasion. However, the role of RBM15 in human different cancers remains unknown. This study aims to analyze the prognostic value of RBM15, and to demonstrate the correlation between RBM15 expression and tumor immunity, as well as to provide clues for further mechanism research. The results showed that RBM15 was mutated or copy number varied in 25 types of cancer. RBM15 mRNA was abnormally up-regulated across various cancers. Survival analysis suggested high expression of RBM15 was associated with poor prognosis in many cancer types. Among these, it affected patients' overall survival (OS) in 10 cancer types, disease-free interval (DFI) in 8 cancer types, progression-free interval (PFI) in 12 cancer types and disease-specific survival (DSS) in 7 cancer types. Importantly, in pancreatic adenocarcinoma (PAAD), overexpression of RBM15 is associated with patients' OS, DFI, PFI, or DSS. In addition, RBM15 expression was positively correlated with immune infiltrating cells in kidney renal clear cell carcinoma (KIRC), brain lower grade glioma (LGG), and PAAD. Moreover, RBM15 expression showed a strong correlation with immune checkpoint markers in PAAD. Cell counting kit-8 (CCK-8) assay showed that knockdown of RBM15 significantly inhibited the proliferation of pancreatic cancer cells. PPI analysis showed USP10, USP24, SMG1, NRAS were closely connected with RBM15 alterations. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis showed that many biological processes (BP), cellular components (CC), molecular functions (MF), cancer related pathways including "sister chromatid cohesion", "peptidyl-serine phosphorylation", "cell division", "nucleoplasm", "nucleus", "protein binding", "protein serine/threonine kinase activity", "T cell receptor signaling pathway", "Cell cycle" were regulated by RBM15 alterations. Taken together, pan-cancer analysis of RBM15 suggested it may be served as a prognostic biomarker and immunotherapeutic target for PAAD. CI - Copyright (c) 2022 Zhao, Ju, Ji, Li and Zhao. FAU - Zhao, Zhiying AU - Zhao Z AD - School of Public Health, Qingdao University, Qingdao, China. FAU - Ju, Qiang AU - Ju Q AD - Department of Blood Transfusion, The Affiliated Hospital of Qingdao University, Qingdao, China. FAU - Ji, Jing AU - Ji J AD - School of Public Health, Qingdao University, Qingdao, China. FAU - Li, Yutong AU - Li Y AD - School of Public Health, Qingdao University, Qingdao, China. FAU - Zhao, Yanjie AU - Zhao Y AD - School of Public Health, Qingdao University, Qingdao, China. LA - eng PT - Journal Article DEP - 20220209 PL - Switzerland TA - Front Mol Biosci JT - Frontiers in molecular biosciences JID - 101653173 PMC - PMC8864094 OTO - NOTNLM OT - RBM15 OT - genomic alteration OT - immunity OT - prognosis OT - proliferation COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/03/01 06:00 MHDA- 2022/03/01 06:01 PMCR- 2022/01/01 CRDT- 2022/02/28 05:40 PHST- 2021/12/24 00:00 [received] PHST- 2022/01/24 00:00 [accepted] PHST- 2022/02/28 05:40 [entrez] PHST- 2022/03/01 06:00 [pubmed] PHST- 2022/03/01 06:01 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - 842833 [pii] AID - 10.3389/fmolb.2022.842833 [doi] PST - epublish SO - Front Mol Biosci. 2022 Feb 9;9:842833. doi: 10.3389/fmolb.2022.842833. eCollection 2022.