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Circular RNAs in gastrointestinal cancer: Current knowledge, biomarkers and targeted therapy (Review)
Xiaorui Zhao1, Yue Wang1, Qiongfang Yu2
1Department of Pathogen Biology and Immunology, Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China.
Abstract:
Circular RNAs (circRNAs) are a type of endogenous non‑coding RNAs that are connected at the 3' and 5' ends by exon or intron cyclization, which forms a covalently closed loop. They are stable, well conserved, exhibit specific expression in mammalian cells and can function as microRNA (miRNA or miR) sponges to regulate the target genes of miRNAs, which influences biological processes. Such as tumor proliferation, invasion, metastasis, apoptosis and tumor stage. circRNAs represent promising candidates for clinical diagnosis and treatment. In the present review, the biogenesis, classification and functions of circRNAs in tumors are briefly summarized and discussed. In addition, the participation of circRNAs in signal transduction pathways regulating gastrointestinal cancer cellular functions is highlighted.
Insights
Circular RNAs (circRNAs) are novel non-coding RNAs with roles in cancer. This review summarizes circRNA biogenesis, function, and involvement in gastrointestinal cancer pathways, highlighting their diagnostic and therapeutic potential.
Area of Science:
- Molecular Biology
- Genetics
- Oncology
Background:
- Circular RNAs (circRNAs) are endogenous non-coding RNAs formed by exon or intron cyclization.
- They are stable, conserved, and specifically expressed in mammalian cells.
- circRNAs can act as microRNA sponges, regulating gene expression and influencing biological processes like tumor progression.
Purpose of the Study:
- To review the biogenesis, classification, and functions of circRNAs in tumors.
- To discuss the role of circRNAs in signal transduction pathways relevant to gastrointestinal cancer.
- To highlight the potential of circRNAs as biomarkers and therapeutic targets in cancer.
Main Methods:
- Literature review of circRNAs in cancer.
- Analysis of circRNA biogenesis and regulatory mechanisms.
- Discussion of circRNA involvement in gastrointestinal cancer signaling pathways.
Main Results:
- circRNAs play significant roles in tumor proliferation, invasion, metastasis, and apoptosis.
- Specific circRNAs are implicated in various gastrointestinal cancer cellular functions.
- circRNAs demonstrate potential for clinical diagnosis and treatment of gastrointestinal cancers.
Conclusions:
- circRNAs are crucial regulators in tumorigenesis and cancer progression.
- Understanding circRNA functions in gastrointestinal cancer offers new avenues for therapeutic intervention.
- circRNAs hold promise as diagnostic and therapeutic agents in oncology.
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