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Updated: Jun 6, 2025

Identification of Circular RNAs using RNA Sequencing
Published on: November 14, 2019
Circular RNAs as multifaceted molecular regulators of vital activity and potential biomarkers of aging
Anna-Maria D Zharova1, Alexey D Perenkov1, Maria V Vedunova1,2
1Institute of Biology and Biomedicine, National Research Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia.
Abstract:
Aging presents a significant challenge to health and social care systems due to the increasing proportion of the elderly population. The identification of reliable biomarkers to assess the progression of aging remains an unresolved question. Circular RNAs (circRNAs) are single-stranded covalently closed RNAs. They have been found to regulate various biological processes. CircRNAs are present in human biological fluids, are relatively stable, and accumulate with age, making them promising as biomarkers of aging. Current information on the expression of circRNAs in aging was analyzed using scientific databases. In this review, we have identified key stages in the study of circRNAs during aging and summarized the current understanding of their biogenesis. By focusing on the role of circRNAs in processes that contribute to aging - such as genomic stability, metabolism, cell death, and signaling pathways - we hypothesize that circRNAs may drive the aging process through their age-related accumulation and resultant deregulation. Examples of age-related differential expression of circRNAs in various species, including humans, are provided. This review highlights the importance of finding novel epigenetic biomarkers of aging, beyond the already identified molecules (circFOXO3, circRNA100783, circPVT1), and highlights circRNAs as a potential therapeutic target for the treatment of age-associated diseases.
Insights
Circular RNAs (circRNAs) show potential as aging biomarkers due to their stability and age-related accumulation. These molecules may drive aging processes and offer therapeutic targets for age-associated diseases.
Area of Science:
- Gerontology
- Molecular Biology
- Biochemistry
Background:
- Aging is a major challenge for healthcare systems, necessitating reliable biomarkers for progression assessment.
- Circular RNAs (circRNAs) are stable, age-accumulating molecules found in biological fluids, making them promising aging biomarkers.
- Understanding circRNA biogenesis and function is crucial for aging research.
Purpose of the Study:
- To review current knowledge on circRNA expression and function in aging.
- To explore the role of circRNAs in aging hallmarks like genomic stability and metabolism.
- To identify circRNAs as potential epigenetic biomarkers and therapeutic targets for age-related diseases.
Main Methods:
- Systematic review of scientific databases for circRNA expression data in aging.
- Analysis of circRNA biogenesis and regulatory mechanisms.
- Focus on circRNAs involved in aging-related cellular processes.
Main Results:
- CircRNAs accumulate with age and are differentially expressed across species, including humans.
- Age-related circRNA accumulation and deregulation may drive aging processes.
- Specific circRNAs (e.g., circFOXO3, circRNA100783, circPVT1) are linked to aging.
Conclusions:
- CircRNAs represent a novel class of epigenetic biomarkers for aging.
- CircRNAs may play a causative role in aging and associated diseases.
- Targeting circRNAs could offer new therapeutic strategies for age-related conditions.
Related Concept Videos
Types of RNA
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
RNA Stability
Transcriptional Regulation: Riboswitches
Translational Regulation
lncRNA - Long Non-coding RNAs
Circadian Rhythms and Gene Regulation

