构建用于预测卵巢癌预后、肿瘤微环境和免疫反应的 PANoptosis 相关预后特征。

IF 3.5 4区 医学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY
Yonghong Li, Guizhen Lyu
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引用次数: 0

摘要

背景:细胞凋亡途径是最近发现的一种细胞死亡机制,涉及细胞热解、凋亡和坏死之间的相互作用和同步。越来越多的证据表明,细胞凋亡与癌症的发生和治疗有关。然而,对于 PANoptosis 基因对卵巢癌(OC)患者的预后价值、肿瘤微环境特征和治疗结果的影响的全面了解仍不完整:本研究的目的是为卵巢癌预后设计PAN凋亡特征并探索其潜在的分子功能:在这项研究中,我们从癌症基因组图谱(TCGA)和GSE32062队列中获得了卵巢癌的RNA测序和临床数据。使用 GSCA 分析了卵巢癌中 PANoptosis 相关基因(PRGs)的体细胞变异。TCGA-OC 和 GSE32062 用于构建模型的训练队列和验证队列。在使用单变量 Cox 分析筛选出具有预后能力的基因后,进行了差异表达和相关性分析。通过最小绝对收缩和选择操作器(LASSO)回归,根据差异表达且与预后相关的基因构建 PRG 标志。CIBERSORT和ESTIMATE用于分析PRGs特征与免疫浸润之间的关系。TIDE 用于分析 PRGs 特征与免疫检查点基因之间的关系。OncoPredict 用于分析 PRGs 特征与药物敏感性之间的关系。定量实时 PCR(qRT-PCR)用于验证 PRGs 在 OC 中的表达:结果:利用 TCGA-OC 中的三个预后基因(AIM2、APAF1 和 ZBP1)构建了 PRGs 特征。结果显示,PRGs特征在TCGA-OC中的AUC分别为0.521、0.546和0.598,在GSE32062中的AUC分别为0.620、0.586和0.579,可预测1年、3年和5年的OS。此外,较高的PRG特征风险评分与较短的OS显著相关(在TCGA-OC中,HR = 1.693,95% CI:1.303 - 2.202,p = 8.34 × 10^-5;在GSE32062中,HR = 1.63,95% CI:1.13 - 2.35,p = 0.009)。风险评分被确定为 OC 的独立预后因素。根据风险评分分类的患者在免疫状态、对免疫疗法的反应和对药物的敏感性方面表现出明显的差异。AIM2、APAF1和ZBP1在OC细胞系中明显异常表达:PRG特征有可能成为OC的预后预测指标,并为OC的治疗提供新的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Construction of a PANoptosis-related Prognostic Signature for Predicting Prognosis, Tumor Microenvironment, and Immune Response in Ovarian Cancer.

Background: The PANoptosis pathway is a recently identified mechanism of cellular death that involves the interaction and synchronization among cellular pyroptosis, apoptosis, and necrosis. More and more evidence suggests that PANoptosis is involved in the development and treatment of cancer. However, a comprehensive understanding of the influence of PANoptosis genes on prognostic value, tumor microenvironment characteristics, and therapeutic outcomes in patients with ovarian cancer (OC) remains incomplete.

Objective: The present work was designed to devise a PANoptosis signature for OC prognosis and explore its potential molecular function.

Methods: For this study, we obtained RNA sequencing and clinical data for ovarian cancer from the Cancer Genome Atlas (TCGA) and the GSE32062 cohort. Somatic variants of PANoptosis-related genes (PRGs) in OC were analyzed using GSCA. TCGA-OC and GSE32062 were used to construct training and validation cohorts for the model. Differential expression and correlation analyses were performed following the screening of genes with prognostic ability using univariate Cox analysis. Least Absolute Shrinkage and Selection Operator (LASSO) regression was performed to construct PRG signature based on genes that were differentially expressed and correlated with prognosis. CIBERSORT and ESTIMATE were used to analyze the relationship between the PRGs signature and immune infiltration. TIDE was used to analyze the relationship between the PRG signature and immune checkpoint genes. OncoPredict was used to analyze the relationship between the PRG signature and the drug sensitivity. Quantitative real-time PCR (qRT-PCR) was used to validate the expression of PRGs in OC.

Results: The PRG signature was constructed using three prognostic genes (AIM2, APAF1, and ZBP1) in both TCGA-OC. The results showed that the PRGs signature had an AUC of 0.521, 0.546, and 0.598 in TCGA-OC and 0.620, 0.586, and 0.579 in GSE32062 to predict to predict OS at 1-, 3-, and 5-year intervals. Furthermore, a higher PRG signature risk score was significantly associated with shorter OS (HR = 1.693, 95% CI: 1.303 - 2.202, p = 8.34 × 10^-5 in TCGA-OC and HR = 1.63, 95% CI: 1.13 - 2.35, p = 0.009 in GSE32062). The risk score was identified as the independent prognostic factor for OC. Patients categorized according to their risk score exhibited notable variations in immune status, response to immunotherapy, and sensitivity to drugs. AIM2, APAF1, and ZBP1 were significantly aberrantly expressed in OC cell lines.

Conclusion: The PRG signature has the potential to serve as a prognostic predictor for OC and to provide new insights into OC treatment.

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来源期刊
Current medicinal chemistry
Current medicinal chemistry 医学-生化与分子生物学
CiteScore
8.60
自引率
2.40%
发文量
468
审稿时长
3 months
期刊介绍: Aims & Scope Current Medicinal Chemistry covers all the latest and outstanding developments in medicinal chemistry and rational drug design. Each issue contains a series of timely in-depth reviews and guest edited thematic issues written by leaders in the field covering a range of the current topics in medicinal chemistry. The journal also publishes reviews on recent patents. Current Medicinal Chemistry is an essential journal for every medicinal chemist who wishes to be kept informed and up-to-date with the latest and most important developments.
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