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Updated: Jun 22, 2025

In Silico Identification and Characterization of circRNAs During Host-Pathogen Interactions
Published on: October 21, 2022
Dysregulation of circular RNAs in inflammation and cancers
Jiayu Liu1,2, Fangqing Zhao3,4,5,6, Ling-Ling Chen7,8,6
1Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China.
Abstract:
Emerging lines of evidence have shown that the production of the covalently closed single-stranded circular RNAs is not splicing errors, but rather a regulated process with distinct biogenesis and turnover. Circular RNAs are expressed in a cell type- and tissue-specific manner and often localize to specific subcellular regions or organelles for functions. The dysregulation of circular RNAs from birth to death is linked to the pathogenesis and progression of diverse diseases. This review outlines how aberrant circular RNA biogenesis, subcellular location, and degradation are linked to disease progression, focusing on metaflammation and cancers. We also discuss potential therapeutic strategies and obstacles in targeting such disease-related circular RNAs.
Insights
Circular RNAs are regulated molecules, not splicing errors. Their dysregulation is linked to diseases like cancer, offering potential therapeutic targets.
Area of Science:
- Molecular Biology
- Genetics
- Disease Pathogenesis
Background:
- Circular RNAs (circRNAs) are increasingly recognized as functional molecules, not merely splicing byproducts.
- Their biogenesis, turnover, and cellular localization are tightly regulated processes.
- Aberrant circRNA expression is implicated in various disease states.
Purpose of the Study:
- To review the role of circular RNAs in disease progression.
- To focus on the link between circRNA dysregulation, metaflammation, and cancer.
- To discuss therapeutic strategies targeting disease-related circRNAs.
Main Methods:
- Literature review of studies on circular RNA biogenesis, function, and disease association.
- Analysis of circRNA expression patterns in different cell types and tissues.
- Examination of the link between circRNA dysregulation and pathological processes like metaflammation and cancer.
Main Results:
- Circular RNA production is a regulated process with specific biogenesis and turnover mechanisms.
- circRNAs exhibit cell type- and tissue-specific expression and subcellular localization.
- Dysregulated circRNAs are associated with the pathogenesis and progression of diseases, including metaflammation and cancers.
Conclusions:
- Aberrant circular RNA biogenesis, localization, and degradation contribute to disease progression.
- Targeting disease-related circular RNAs presents potential therapeutic avenues.
- Obstacles in targeting circRNAs for therapeutic purposes need to be addressed.
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