Do Circulating miRNAs Exhibit Distinct Patterns in Coronary Artery Disease Patients?

Area of Science:

• Genomics
• Molecular Biology
• Biomarker Discovery

Background:

• Coronary artery disease (CAD) is a major global health concern.
• Early diagnosis and understanding molecular mechanisms are crucial for managing CAD.
• Circulating microRNAs (miRNAs) are stable, non-invasive biomarkers involved in disease processes.

Purpose of the Study:

• To identify differentially expressed miRNAs in the plasma of Indian CAD patients using next-generation sequencing.
• To evaluate the potential of these miRNAs as diagnostic biomarkers for CAD.

Main Methods:

• Small RNA sequencing of plasma from 30 CAD patients and 30 controls.
• Differential expression analysis using DESeq2.
• Target gene prediction and functional enrichment analysis.

Main Results:

• Twelve significantly dysregulated circulating miRNAs were identified in CAD patients.
• Novel associations with CAD were found for miR-6806-3p, miR-3614-5p, miR-548e-3p, miR-147b-3p, and let-7d-3p.
• miR-125a-3p, miR-495-3p, and miR-143-3p were implicated in CAD pathogenesis pathways.

Conclusions:

• This is the first comprehensive NGS analysis of circulating small RNAs in Indian CAD patients.
• The identified miRNAs play intricate roles in CAD pathogenesis by targeting key genes.
• These miRNAs show potential as diagnostic biomarkers, requiring further validation in larger cohorts.