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Published on: July 22, 2020
Circular RNAs and their participation in stemness of cancer
Francisco Alejandro Lagunas-Rangel1
1Department of Genetics and Molecular Biology, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Av. Instituto Politécnico Nacional No. 2508, San Pedro Zacatenco, Gustavo A. Madero, 07360, Mexico City, Mexico. francisco.lagunas@cinvestav.mx.
Abstract:
Circular RNAs (circRNA) are covalently closed single-stranded RNA molecules that act as important regulators of gene expression through different mechanisms. Meanwhile, cancer stem cells (CSCs) are a small subpopulation of cells, with properties similar to normal stem cells that arise during the development of cancer and support tumor growth, induce resistance to therapy, and are responsible for metastatic spread. Since the elimination of CSCs is an important goal of cancer treatment, the circRNAs that participate in regulating gene expression and signaling pathways linked to CSCs have aroused attention in recent years, especially because it has been suggested that these molecules may function as therapeutic targets and/or clinical biomarkers. Thus, the proposal of this work is to enumerate a series of circRNAs that have been shown to play a relevant role in CSCs and explain in detail the molecular regulatory mechanisms that they establish to perform that function.
Insights
Circular RNAs (circRNAs) are key regulators of gene expression. This study details how specific circRNAs influence cancer stem cells (CSCs), highlighting their potential as therapeutic targets and biomarkers for cancer treatment.
Area of Science:
- Molecular Biology
- Oncology
- RNA Biology
Background:
- Circular RNAs (circRNAs) are regulatory molecules impacting gene expression.
- Cancer stem cells (CSCs) drive tumor growth, metastasis, and therapy resistance.
- Targeting CSCs is crucial for effective cancer treatment.
Purpose of the Study:
- To identify and describe circRNAs involved in regulating cancer stem cells.
- To elucidate the molecular mechanisms by which circRNAs control CSC functions.
- To explore the potential of circRNAs as therapeutic targets and biomarkers for cancer.
Main Methods:
- Literature review and synthesis of existing research on circRNAs and CSCs.
- Analysis of molecular pathways regulated by circRNAs in CSCs.
- Detailed examination of regulatory mechanisms.
Main Results:
- Identification of specific circRNAs implicated in CSC maintenance and function.
- Elucidation of how these circRNAs modulate key signaling pathways.
- Evidence supporting the role of circRNAs in CSC-driven tumorigenesis and drug resistance.
Conclusions:
- CircRNAs play significant roles in regulating cancer stem cell biology.
- Understanding these circRNA-mediated mechanisms offers new avenues for cancer therapy.
- CircRNAs represent promising biomarkers and therapeutic targets for eliminating CSCs.
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