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CircRNA as an Achilles heel of cancer: characterization, biomarker and therapeutic modalities
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CircRNA as an Achilles heel of cancer: characterization, biomarker and therapeutic modalities
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Journal Article
CircRNA as an Achilles heel of cancer: characterization, biomarker and therapeutic modalities
2024
Overview
Circular RNAs (circRNAs) are a class of endogenous noncoding RNAs characterized by their lack of 5′ caps and 3′ poly(A) tails. These molecules have garnered substantial attention from the scientific community. A wide range of circRNA types has been found to be expressed in various tissues of the human body, exhibiting unique characteristics such as high abundance, remarkable stability, and tissue-specific expression patterns. These attributes, along with their detectability in liquid biopsy samples such as plasma, position circRNAs an ideal choice as cancer diagnostic and prognostic biomarkers. Additionally, several studies have reported that the functions of circRNAs are associated with tumor proliferation, metastasis, and drug resistance. They achieve this through various mechanisms, including modulation of parental gene expression, regulation of gene transcription, acting as microRNA (miRNA) sponges, and encoding functional proteins. In recent years, a large number of studies have focused on synthesizing circRNAs in vitro and delivering them to tumor tissue to exert its effects in inhibit tumor progression. Herein, we briefly discuss the biogenesis, characteristics, functions, and detection of circRNAs, emphasizing their clinical potential as biomarkers for cancer diagnosis and prognosis. We also provide an overview the recent techniques for synthesizing circRNAs and delivery strategies, and outline the application of engineered circRNAs in clinical cancer therapy.
Publisher
BioMed Central,BioMed Central Ltd,BMC
