Table7_In search of the ratio of miRNA expression as robust biomarkers for constructing stable diagnostic models among multi-center data.DOCX

MicroRNAs (miRNAs) are promising biomarkers for the early detection of disease, and many miRNA-based diagnostic models have been constructed to distinguish patients and healthy individuals. To thoroughly utilize the miRNA-profiling data across different sequencing platforms or multiple centers, the models accounting the batch effects were demanded for the generalization of medical application. We conducted transcription factor (TF)-mediated miRNA–miRNA interaction network analysis and adopted the within-sample expression ratios of miRNA pairs as predictive markers. The ratio of the expression values between each miRNA pair turned out to be stable across multiple data sources. A genetic algorithm-based classifier was constructed to quantify risk scores of the probability of disease and discriminate disease states from normal states in discovery, with a validation dataset for COVID-19, renal cell carcinoma, and lung adenocarcinoma. The predictive models based on the expression ratio of interacting miRNA pairs demonstrated good performances in the discovery and validation datasets, and the classifier may be used accurately for the early detection of disease.

MicroRNAs（miRNAs）作为疾病早期检测的潜在生物标志物，具有广阔的应用前景。众多基于miRNA的诊断模型已被构建，用以区分患者与健康个体。为充分挖掘不同测序平台或多个中心间的miRNA表达谱数据，并确保模型在医学应用中的泛化能力，需求对批次效应进行校正的模型。本研究通过转录因子（TF）介导的miRNA-miRNA相互作用网络分析，采用样本内miRNA对表达比值作为预测指标。结果显示，每个miRNA对的表达比值在多个数据源中表现出稳定性。基于遗传算法构建的分类器，用于量化疾病发生概率的风险评分，并在发现阶段区分疾病状态与正常状态，验证数据集包括COVID-19、肾细胞癌和肺腺癌。基于相互作用miRNA对表达比值的预测模型在发现和验证数据集中均展现出良好的性能，且该分类器在疾病早期检测中具有准确应用的可能。