Analysis of m7G methylation modification patterns and pulmonary vascular immune microenvironment in pulmonary arterial hypertension

作者：Desheng Wang, Yanfei Mo, Dongfang Zhang, Yang Bai · 发表于：Frontiers in Immunology · 年份：2022 · DOI：10.3389/fimmu.2022.1014509 · 被引用次数：12 · 研究领域：RNA modifications and cancer、Cancer-related gene regulation、Pulmonary Hypertension Research and Treatments

Background M 7 G methylation modification plays an important role in cardiovascular disease development. Dysregulation of the immune microenvironment is closely related to the pathogenesis of PAH. However, it is unclear whether m 7 G methylation is involved in the progress of PAH by affecting the immune microenvironment. Methods The gene expression profile of PAH was obtained from the GEO database, and the m 7 G regulatory factors were analyzed for differences. Machine learning algorithms were used to screen characteristic genes, including the least absolute shrinkage and selection operator, random forest, and support vector machine recursive feature elimination analysis. Constructed a nomogram model, and receiver operating characteristic was used to evaluate the diagnosis of disease characteristic genes value. Next, we used an unsupervised clustering method to perform consistent clustering analysis on m 7 G differential genes. Used the ssGSEA algorithm to estimate the relationship between the m 7 G regulator in PAH and immune cell infiltration and analyze the correlation with disease-characteristic genes. Finally, the listed drugs were evaluated through the screened signature genes. Results We identified 15 kinds of m 7 G differential genes. CYFIP1, EIF4E, and IFIT5 were identified as signature genes by the machine learning algorithm. Meanwhile, two m 7 G molecular subtypes were identified by consensus clustering (cluster A/B). In addition, immune cell infiltration analysis ...