Zhou Jing, Zhang Li, Wu Hao, Gao Sheng-Lin, Chen Xiao-Ping, Zhang Li-Feng, Zhao Cui-Ping, Wei Bing-Bing, Bai Yu
Department of Medical Oncology, Affiliated Hospital of Jiangnan University, Hefeng Road 1000, Wuxi, 214000, China.
Department of Urology, The Affiliated Changzhou Second People's Hospital of Nanjing Medical University, 68 Gehu Road, Changzhou, 213000, Jiangsu, China.
Discov Oncol. 2024 Nov 30;15(1):730. doi: 10.1007/s12672-024-01564-2.
LncRNAs are critical regulators of bladder cancer (BLCA), and ferroptosis is a newly discovered cell death responsible for mediating apoptosis and tumorigenesis. The present study aims to establish a prognostic signature of differentially expressed ferroptosis-related lncRNAs (DEFRlncRNAs) and explore the DEFRlncRNA associated with NUPR1 in BLCA.
DEFRlncRNAs in BLCA patients were screened using univariate and multivariate Cox and LASSO regression analyses. In vitro experiments were performed to detect the regulatory effects of DEFRlncRNAs on BLCA cells. A prognostic signature of DEFRlncRNAs in BLCA was created and validated. Moreover, we used RNA-binding protein immunoprecipitation (RIP) to evaluate the correlated DEFRlncRNA with NUPR1.
A prognostic signature involving 18 DEFRlncRNAs in BLCA was created. Overexpression of AL355353.2 or knockdown of AL136084.3 promoted apoptosis in 5637 and T24 cells in vitro. Results from Starbase database estimated that AL136084.3 was positively associated with NUPR1 (R = 0.229, p < 0.001). RIP analysis revealed the reciprocal binding of NUPR1 and AL136084.3 in BLCA.
The identified FRlncRNA pair signature has a good prognostic and clinical predictive value. The ferroptosis-related lncRNA AL136084.3 is correlated with NUPR1 in BLCA.
长链非编码RNA(lncRNAs)是膀胱癌(BLCA)的关键调节因子,而铁死亡是一种新发现的细胞死亡方式,可介导细胞凋亡和肿瘤发生。本研究旨在建立差异表达的铁死亡相关lncRNAs(DEFRlncRNAs)的预后特征,并探索BLCA中与核仁蛋白1(NUPR1)相关的DEFRlncRNA。
采用单变量和多变量Cox及LASSO回归分析筛选BLCA患者中的DEFRlncRNAs。进行体外实验以检测DEFRlncRNAs对BLCA细胞的调节作用。建立并验证了BLCA中DEFRlncRNAs的预后特征。此外,我们使用RNA结合蛋白免疫沉淀(RIP)来评估与NUPR1相关的DEFRlncRNA。
建立了一个包含18个BLCA中DEFRlncRNAs的预后特征。在体外,过表达AL355353.2或敲低AL136084.3可促进5637和T24细胞凋亡。Starbase数据库结果估计AL136084.3与NUPR1呈正相关(R = 0.229,p < 0.001)。RIP分析揭示了BLCA中NUPR1与AL136084.3的相互结合。
所鉴定的FRlncRNA对特征具有良好的预后和临床预测价值。铁死亡相关lncRNA AL136084.3在BLCA中与NUPR1相关。