Xu Yushun, Bu Gang
Department of Cardiology, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China.
Department of Cardiology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China.
Front Cardiovasc Med. 2023 Jun 23;10:1185924. doi: 10.3389/fcvm.2023.1185924. eCollection 2023.
PURPOSE: Sepsis-induced cardiac injury is a severe complication of sepsis and has a high mortality. Recent research has implicated ferroptosis as a contributing factor to myocardial cell death. This study is aimed at finding novel ferroptosis-associated targets in sepsis-induced cardiac injury. METHODS AND RESULTS: In our study, a total of two Gene expression omnibus datasets (GSE185754 and GSE171546) were obtained for bioinformatics analysis. GSEA enrichment analysis demonstrated that ferroptosis pathway Z-score rapidly increased in the first 24 h and decreased gradually in the following 24-72 h. Fuzzy analysis was then used to obtain distinct clusters of temporal patterns and find genes in cluster 4 that exhibited the same trend with ferroptosis progression during the time points. After intersecting the differentially expressed genes, genes in cluster 4, and ferroptosis-related genes, three ferroptosis-associated targets were finally selected: Ptgs2, Hmox1, and Slc7a11. While Ptgs2 has been previously reported to be involved in the regulation of septic cardiomyopathy, this study is the first to demonstrate that downregulation of Hmox1 and Slc7a11 can alleviate ferroptosis in sepsis-induced cardiac injury. CONCLUSION: This study reports Hmox1 and Slc7a11 as ferroptosis-associated targets in sepsis-induced cardiac injury, and both of them may become key therapeutic and diagnostic targets for this complication in the future.
目的:脓毒症诱导的心脏损伤是脓毒症的一种严重并发症,死亡率很高。最近的研究表明铁死亡是心肌细胞死亡的一个促成因素。本研究旨在寻找脓毒症诱导的心脏损伤中与铁死亡相关的新靶点。 方法与结果:在我们的研究中,共获取了两个基因表达综合数据集(GSE185754和GSE171546)用于生物信息学分析。基因集富集分析表明,铁死亡通路Z值在前24小时迅速升高,在随后的24 - 72小时逐渐下降。然后使用模糊分析获得不同的时间模式聚类,并找到在时间点上与铁死亡进展呈现相同趋势的聚类4中的基因。在对差异表达基因、聚类4中的基因和铁死亡相关基因进行交叉分析后,最终选择了三个与铁死亡相关的靶点:Ptgs2、Hmox1和Slc7a11。虽然此前已有报道Ptgs2参与脓毒症性心肌病的调节,但本研究首次证明下调Hmox1和Slc7a11可减轻脓毒症诱导的心脏损伤中的铁死亡。 结论:本研究报告了Hmox1和Slc7a11是脓毒症诱导的心脏损伤中与铁死亡相关的靶点,它们未来都可能成为这种并发症的关键治疗和诊断靶点。
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