PMID- 38521112 OWN - NLM STAT- MEDLINE DCOM- 20240426 LR - 20240426 IS - 1879-0038 (Electronic) IS - 0378-1119 (Linking) VI - 914 DP - 2024 Jul 1 TI - Identify CTBP1-DT as an immunological biomarker that promotes lipid synthesis and apoptosis resistance in KIRC. PG - 148403 LID - S0378-1119(24)00284-1 [pii] LID - 10.1016/j.gene.2024.148403 [doi] AB - Recently, mounting evidence has highlighted the essential function of the C-terminal binding protein-1 divergent transcript (CTBP1-DT) in malignancies. However, its role in kidney renal clear cell carcinoma (KIRC) remains largely unknown. Our study aimed to identify the potential function of CTBP1-DT in KIRC. RT-qPCR, Kaplan-Meier survival analysis, Cox regression analysis, and nomogram analysis were utilized to determine the expression and effects of CTBP1-DT on survival. The subcellular localization of CTBP1-DT was determined using RNA fluorescence in situ hybridization (FISH). To investigate the functions of CTBP1-DT in regulating KIRC cell proliferation, migration, invasion, lipid synthesis, and apoptosis, we conducted CCK8, EdU, Transwell, and Oil Red O staining and cell apoptosis staining assays. The relationships between CTBP1-DT and the tumor microenvironment were investigated with multiple bioinformatics analysis algorithms and databases, including CYBERSORT, TIMER2, Spearman correlation test, tumor mutation burden (TMB), microsatellite instability (MSI), and immunophenoscore (IPS). According to our results, CTBP1-DT is a lncRNA located in the nucleus that is significantly upregulated in KIRC and is correlated with better clinical outcomes. Downregulating CTBP1-DT inhibited cell viability, migration, invasion, and lipid synthesis but triggered cell apoptosis. Additionally, we explored the potential effect of CTBP1-DT in regulating immune cell infiltration in KIRC and other malignancies. Furthermore, CTBP1-DT could be used to predict the effectiveness of targeted drugs and immune checkpoint inhibitors. In conclusion, we identified CTBP1-DT as a potential immunological biomarker and discovered the potential role of CTBP1-DT in regulating lipid synthesis and apoptosis resistance. CI - Copyright (c) 2024 Elsevier B.V. All rights reserved. FAU - Li, Haolin AU - Li H AD - Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China. FAU - Fei, Mintian AU - Fei M AD - Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China. FAU - Zhang, Yi AU - Zhang Y AD - Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China. FAU - Xu, Qili AU - Xu Q AD - Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China. FAU - Feng, Rui AU - Feng R AD - Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China. FAU - Cao, Jing AU - Cao J AD - Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China. Electronic address: 2575241418@qq.com. FAU - Qu, Yan AU - Qu Y AD - Department of Pathogenic Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China. Electronic address: 382917561@qq.com. FAU - Xiao, Haibing AU - Xiao H AD - Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China. Electronic address: xiaohaibing@ahmu.edu.cn. LA - eng PT - Journal Article DEP - 20240321 PL - Netherlands TA - Gene JT - Gene JID - 7706761 RN - EC 1.1.- (Alcohol Oxidoreductases) RN - 0 (Biomarkers, Tumor) RN - EC 1.1.1.- (C-terminal binding protein) RN - 0 (DNA-Binding Proteins) RN - 0 (RNA, Long Noncoding) RN - 0 (Lipids) SB - IM MH - Humans MH - *Apoptosis MH - *Alcohol Oxidoreductases/genetics/metabolism MH - *Biomarkers, Tumor/genetics/metabolism MH - Cell Line, Tumor MH - *DNA-Binding Proteins/genetics/metabolism MH - *Cell Proliferation MH - *Carcinoma, Renal Cell/genetics/pathology/metabolism/immunology MH - Kidney Neoplasms/genetics/pathology/immunology/metabolism MH - Cell Movement MH - Gene Expression Regulation, Neoplastic MH - RNA, Long Noncoding/genetics MH - Lipids MH - Prognosis MH - Male MH - Female OTO - NOTNLM OT - Apoptosis OT - CTBP1-DT OT - KIRC OT - Lipid OT - Tumor Microenvironment OT - lncRNA COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2024/03/24 00:42 MHDA- 2024/04/27 09:49 CRDT- 2024/03/23 20:36 PHST- 2023/11/23 00:00 [received] PHST- 2024/03/03 00:00 [revised] PHST- 2024/03/20 00:00 [accepted] PHST- 2024/04/27 09:49 [medline] PHST- 2024/03/24 00:42 [pubmed] PHST- 2024/03/23 20:36 [entrez] AID - S0378-1119(24)00284-1 [pii] AID - 10.1016/j.gene.2024.148403 [doi] PST - ppublish SO - Gene. 2024 Jul 1;914:148403. doi: 10.1016/j.gene.2024.148403. Epub 2024 Mar 21.