Dysregulated Circulating Apoptosis- and Autophagy-Related lncRNAs as Diagnostic Markers in Coronary Artery Disease
Objective. Increasing evidence emphasizes the implications of dysregulated apoptosis and autophagy cellular processes in coronary artery disease (CAD). Herein, we aimed to explore apoptosis- and autophagy-related long noncoding RNAs (lncRNAs) in peripheral blood of CAD patients. Methods. The mRNA and lncRNA expression profiles were retrieved from the Gene Expression Omnibus (GEO) database. With ∣ fold change ∣ > 1.5 and adjusted p value < 0.05, differentially expressed apoptosis- and autophagy-related mRNAs were screened between CAD and healthy blood samples. Also, differentially expressed lncRNAs were identified for CAD. Using the psych package, apoptosis- and autophagy-related lncRNAs were defined with Spearson’s correlation analysis. Receiver operating characteristic (ROC) curves were conducted for the assessment of the diagnosed efficacy of these apoptosis- and autophagy-related lncRNAs. Results. Our results showed that 24 apoptosis- and autophagy-related mRNAs were abnormally expressed in CAD than normal controls. 12 circulating upregulated and 1 downregulated apoptosis- and autophagy-related lncRNAs were identified for CAD. The ROCs confirmed that AC004485.3 ( AUC = 0.899 ), AC004920.3 ( AUC = 0.93 ), AJ006998.2 ( AUC = 0.776 ), H19 ( AUC = 0.943 ), RP5-902P8.10 ( AUC = 0.956 ), RP5-1114G22.2 ( AUC = 0.883 ), RP11-247A12.1 ( AUC = 0.885 ), RP11-288L9.4 ( AUC = 0.928 ), RP11-344B5.2 ( AUC = 0.858 ), RP11-452C8.1 ( AUC = 0.929 ), RP11-565A3.1 ( AUC = 0.893 ), and XXbac-B33L19.4 ( AUC = 0.932 ) exhibited good performance in differentiating CAD from healthy controls. Conclusion. Collectively, our findings proposed that circulating apoptosis- and autophagy-related lncRNAs could become underlying diagnostic markers for CAD in clinical practice.