系统性鉴定和分析肥厚型心肌病中失调的 miRNA 和转录因子前馈环。

Systematic identification and analysis of dysregulated miRNA and transcription factor feed-forward loops in hypertrophic cardiomyopathy.

机构信息

College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China.

Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China.

出版信息

J Cell Mol Med. 2019 Jan;23(1):306-316. doi: 10.1111/jcmm.13928. Epub 2018 Oct 19.

Abstract

Hypertrophic cardiomyopathy (HCM) is the most common genetic cardiovascular disease. Although some genes and miRNAs related with HCM have been studied, the molecular regulatory mechanisms between miRNAs and transcription factors (TFs) in HCM have not been systematically elucidated. In this study, we proposed a novel method for identifying dysregulated miRNA-TF feed-forward loops (FFLs) by integrating sample matched miRNA and gene expression profiles and experimentally verified interactions of TF-target gene and miRNA-target gene. We identified 316 dysregulated miRNA-TF FFLs in HCM, which were confirmed to be closely related with HCM from various perspectives. Subpathway enrichment analysis demonstrated that the method was outperformed by the existing method. Furthermore, we systematically analysed the global architecture and feature of gene regulation by miRNAs and TFs in HCM, and the FFL composed of hsa-miR-17-5p, FASN and STAT3 was inferred to play critical roles in HCM. Additionally, we identified two panels of biomarkers defined by three TFs (CEBPB, HIF1A, and STAT3) and four miRNAs (hsa-miR-155-5p, hsa-miR-17-5p, hsa-miR-20a-5p, and hsa-miR-181a-5p) in a discovery cohort of 126 samples, which could differentiate HCM patients from healthy controls with better performance. Our work provides HCM-related dysregulated miRNA-TF FFLs for further experimental study, and provides candidate biomarkers for HCM diagnosis and treatment.

摘要

肥厚型心肌病(HCM)是最常见的遗传性心血管疾病。虽然已经研究了一些与 HCM 相关的基因和 miRNA,但 miRNA 与 HCM 中转录因子(TFs)之间的分子调控机制尚未系统阐明。在这项研究中,我们提出了一种通过整合样本匹配的 miRNA 和基因表达谱来识别失调的 miRNA-TF 前馈环(FFL)的新方法,并通过实验验证了 TF-靶基因和 miRNA-靶基因之间的相互作用。我们在 HCM 中鉴定了 316 个失调的 miRNA-TF FFL,从多个角度证实它们与 HCM 密切相关。亚通路富集分析表明,该方法优于现有方法。此外,我们系统地分析了 miRNA 和 TFs 在 HCM 中对基因调控的全局结构和特征,推断由 hsa-miR-17-5p、FASN 和 STAT3 组成的 FFL 在 HCM 中发挥关键作用。此外,我们在 126 个样本的发现队列中鉴定了由三个 TF(CEBPB、HIF1A 和 STAT3)和四个 miRNA(hsa-miR-155-5p、hsa-miR-17-5p、hsa-miR-20a-5p 和 hsa-miR-181a-5p)定义的两个生物标志物面板,可更好地区分 HCM 患者和健康对照者。我们的工作为进一步的实验研究提供了与 HCM 相关的失调的 miRNA-TF FFL,并为 HCM 的诊断和治疗提供了候选生物标志物。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9b12/6307764/3b30c2d8470c/JCMM-23-306-g001.jpg

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