RNA damage in human atherosclerosis: pathophysiological significance and implications for gene expression studies

Area of Science:

• Biomedical Research
• Cardiovascular Pathology
• Molecular Biology

Background:

• RNA damage is an understudied area in biomedical research.
• The triggers and pathological roles of RNA damage are largely unknown.
• Advanced human atherosclerotic plaques exhibit significant RNA damage.

Purpose of the Study:

• To summarize evidence on RNA damage in atherosclerosis.
• To explore potential mechanisms and implications of RNA damage in plaques.
• To highlight the impact of RNA damage on research data.

Main Methods:

• Review of recent scientific evidence.
• Analysis of molecular modifications in atherosclerotic plaques.
• Assessment of oxidative stress and iron deposition in plaque pathology.

Main Results:

• Loss of RNA integrity and 8-oxoG modifications are frequent in advanced atherosclerotic plaques.
• Oxidative stress and intraplaque hemorrhage with iron deposition are potential contributors to RNA degradation.
• RNA damage may influence protein synthesis, cell death, and plaque stability.

Conclusions:

• RNA damage is a significant factor in advanced atherosclerosis.
• RNA damage may contribute to plaque destabilization and rupture.
• RNA damage can confound results from gene expression studies, affecting transcript quantification.