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Updated: Aug 1, 2025

In Silico Identification and Characterization of circRNAs During Host-Pathogen Interactions
Published on: October 21, 2022
CircRNAs and RNA-Binding Proteins Involved in the Pathogenesis of Cancers or Central Nervous System Disorders
Yuka Ikeda1, Sae Morikawa1, Moeka Nakashima1
1Department of Food Science and Nutrition, Nara Women's University, Kita-Uoya Nishimachi, Nara 630-8506, Japan.
Abstract:
Circular RNAs (circRNAs), a newly recognized group of noncoding RNA transcripts, have established widespread attention due to their regulatory role in cell signaling. They are covalently closed noncoding RNAs that form a loop, and are typically generated during the splicing of precursor RNAs. CircRNAs are key post-transcriptional and post-translational regulators of gene expression programs that might influence cellular response and/or function. In particular, circRNAs have been considered to function as sponges of specific miRNA, regulating cellular processes at the post-transcription stage. Accumulating evidence has shown that the aberrant expression of circRNAs could play a key role in the pathogenesis of several diseases. Notably, circRNAs, microRNAs, and several RNA-binding proteins, including the antiproliferative (APRO) family proteins, could be indispensable gene modulators, which might be strongly linked to the occurrence of diseases. In addition, circRNAs have attracted general interest for their stability, abundance in the brain, and their capability to cross the blood-brain barrier. Here, we present the current findings and theragnostic potentials of circRNAs in several diseases. With this, we aim to provide new insights to support the development of novel diagnostic and/or therapeutic strategies for these diseases.
Insights
Circular RNAs (circRNAs) are key regulators of gene expression and disease pathogenesis. Their unique structure and function offer potential for novel diagnostic and therapeutic strategies.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- Circular RNAs (circRNAs) are novel noncoding RNA transcripts with a unique covalently closed loop structure.
- They function as crucial post-transcriptional and post-translational regulators, influencing cellular signaling and gene expression.
- Aberrant circRNA expression is implicated in the pathogenesis of various diseases.
Purpose of the Study:
- To review current findings on circRNAs in disease.
- To explore the theragnostic potential of circRNAs.
- To provide insights for developing novel diagnostic and therapeutic strategies.
Main Methods:
- Literature review of current research on circRNAs.
- Analysis of circRNA roles in cellular signaling and gene regulation.
- Evaluation of circRNA involvement in disease pathogenesis.
- Assessment of circRNA stability, abundance, and blood-brain barrier crossing capabilities.
Main Results:
- CircRNAs act as miRNA sponges, regulating gene expression at the post-transcriptional level.
- CircRNAs, microRNAs, and RNA-binding proteins are key gene modulators linked to disease.
- CircRNAs exhibit stability, high abundance in the brain, and can cross the blood-brain barrier.
Conclusions:
- CircRNAs hold significant potential as diagnostic biomarkers and therapeutic targets for various diseases.
- Further research into circRNAs can drive the development of innovative medical strategies.
- Understanding circRNA mechanisms is crucial for advancing disease treatment and diagnostics.
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