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Updated: Jun 12, 2025

In Silico Identification and Characterization of circRNAs During Host-Pathogen Interactions
Published on: October 21, 2022
Circular RNAs in programmed cell death: Regulation mechanisms and potential clinical applications in cancer: A review
Yudi Gao1, Hong Lin2, Tiantian Tang2
1School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, 400054, China.
Abstract:
Circular RNAs (circRNAs) are a novel class of non-coding RNAs with covalently closed structures formed by reverse splicing of precursor mRNAs. The widespread expression of circRNAs across species has been revealed by high-throughput sequencing and bioinformatics approaches, indicating their unique properties and diverse functions including acting as microRNA sponges and interacting with RNA-binding proteins. Programmed cell death (PCD), encompassing various forms such as apoptosis, necroptosis, pyroptosis, autophagy, and ferroptosis, is an essential process for maintaining normal development and homeostasis in the human body by eliminating damaged, infected, and aging cells. Many studies have demonstrated that circRNAs play crucial roles in tumourigenesis and development by regulating PCD in tumor cells, showing that circRNAs have the potential to be biomarkers and therapeutic targets in cancer. This review aims to comprehensively summarize the intricate associations between circRNAs and diverse PCD pathways in tumor cells, which play crucial roles in cancer development. Additionally, this review provides a detailed overview of the underlying mechanisms by which circRNAs modulate various forms of PCD for the first time. The ultimate objective is to offer valuable insights into the potential clinical significance of developing novel strategies based on circRNAs and PCD for cancer diagnosis, prognosis, and treatment.
Insights
Circular RNAs (circRNAs) regulate programmed cell death (PCD) in tumors. Understanding these interactions offers potential for novel cancer diagnostics and therapeutics.
Area of Science:
- Molecular Biology
- Genetics
- Oncology
Background:
- Circular RNAs (circRNAs) are non-coding RNAs with unique closed structures.
- circRNAs function as microRNA sponges and interact with RNA-binding proteins.
- Programmed cell death (PCD) is vital for homeostasis and eliminating compromised cells.
Purpose of the Study:
- To review the association between circRNAs and PCD in tumor cells.
- To detail the mechanisms of circRNA-modulated PCD.
- To highlight circRNAs as potential cancer biomarkers and therapeutic targets.
Main Methods:
- Comprehensive literature review of circRNAs and PCD in cancer.
- Analysis of high-throughput sequencing and bioinformatics data.
- Synthesis of current understanding of molecular mechanisms.
Main Results:
- circRNAs significantly influence various PCD pathways in cancer.
- circRNAs can promote or inhibit tumor cell death.
- Mechanisms involve regulating gene expression and protein interactions.
Conclusions:
- circRNAs play critical roles in cancer development via PCD modulation.
- circRNAs hold promise as biomarkers for cancer diagnosis and prognosis.
- Targeting circRNAs offers a novel therapeutic strategy for cancer treatment.
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