Novel Insights into Circular RNAs in Metastasis in Breast Cancer: An Update.
Paola Zepeda-EnríquezMacrina Beatriz Silva-CázaresCesar López-CamarilloPublished in: Non-coding RNA (2023)
Circular RNAs (circRNAs) are single-stranded closed non-coding RNA molecules that are aberrantly expressed and produce tumor-specific gene signatures in human cancers. They exert biological functions by acting as transcriptional regulators, microRNA sponges, and protein scaffolds, regulating the formation of protein-RNA complexes and, ultimately, regulating gene expression. Triple-negative breast cancer (TNBC) is one of the most aggressive cancers of the mammary gland and has a poor prognosis. Studies of circRNAs in TNBC are limited but have demonstrated these molecules' pivotal roles in cell proliferation, invasion, metastasis, and resistance to chemo/radiotherapy, suggesting that they could be potential prognostic biomarkers and novel therapeutic targets. Here, we reviewed the status of actual knowledge about circRNA biogenesis and functions and summarized novel findings regarding their roles in TNBC development and progression. In addition, we discussed recent data about the importance of exosomes in the transport and export of circRNAs in TNBC. Deep knowledge of circRNA functions in metastasis and therapy responses could be an invaluable guide in the identification of novel therapeutic targets for advancing the treatment of TNBC.
Keyphrases
- poor prognosis
- gene expression
- cell proliferation
- long non coding rna
- healthcare
- binding protein
- endothelial cells
- genome wide
- locally advanced
- early stage
- mesenchymal stem cells
- dna methylation
- protein protein
- amino acid
- nucleic acid
- photodynamic therapy
- stem cells
- radiation induced
- cell cycle
- squamous cell carcinoma
- small molecule
- big data
- risk assessment
- drug delivery
- pi k akt
- rectal cancer
- human health
- oxidative stress
- case control
- childhood cancer
- heat stress