Circular RNAs in Vascular Functions and Diseases.

Area of Science:

• Biomedical Science
• Molecular Biology
• Genetics

Background:

• Vascular diseases are a leading cause of mortality, contributing to heart, nervous system, and metabolic disorders.
• Vascular dysfunction is a critical factor in ischemia, cancer, and inflammatory diseases, accelerating disease progression.
• Circular RNAs (circRNAs), a class of noncoding RNAs with a unique ring structure, are increasingly recognized for their roles in human diseases.

Purpose of the Study:

• To summarize the diverse functions of circRNAs in various vascular diseases.
• To highlight the role of circRNAs in regulating gene expression via microRNA (miRNA) sponging.
• To explore the potential of circRNAs as biomarkers for vascular conditions.

Main Methods:

• Literature review and synthesis of existing research on circRNAs and vascular diseases.
• Analysis of circRNA expression patterns and regulatory mechanisms in disease contexts.
• Identification of specific vascular diseases where circRNA involvement has been documented.

Main Results:

• CircRNAs are abnormally expressed in numerous vascular diseases, including atherosclerosis, aortic aneurysm, and coronary artery disease.
• CircRNAs modulate gene expression, often by sequestering microRNAs (miRNAs), influencing vascular function.
• Specific circRNAs are implicated in conditions such as diabetic retinopathy, pulmonary hypertension, and hepatocellular carcinoma invasion.

Conclusions:

• CircRNAs play significant roles in the pathogenesis and progression of a wide spectrum of vascular diseases.
• The regulatory functions of circRNAs, particularly their interaction with miRNAs, are crucial in vascular health and disease.
• CircRNAs hold promise as potential diagnostic biomarkers and therapeutic targets for improving vascular disease management.