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Updated: Nov 1, 2025

Identification of Circular RNAs using RNA Sequencing
Published on: November 14, 2019
Circular RNAs regulate cancer-related signaling pathways and serve as potential diagnostic biomarkers for human
Pranavi Garlapati1, Jinjie Ling2, Paul J Chiao1
1Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
Abstract:
Circular RNAs (circRNAs) are RNAs that have an important role in various pathological processes, including cancer. After the usage of high-throughput RNA sequencing, many circRNAs were found to be differentially expressed in various cancer cell lines and regulate cell signaling pathways by modulating particular gene expressions. Understanding their role in these pathways and what cancers they are found in can set the stage for identifying diagnostic and prognostic biomarkers and therapeutic targets of cancer. This paper will discuss which circRNAs are found in different cancers and what mechanisms they use to upregulate or downregulate certain cellular components.
Insights
Circular RNAs (circRNAs) are key regulators in cancer development. This review explores their roles in various cancers, offering insights into potential diagnostic biomarkers and therapeutic targets.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- Circular RNAs (circRNAs) are increasingly recognized for their significant roles in diverse pathological processes, notably in cancer.
- High-throughput RNA sequencing has revealed differential expression of numerous circRNAs across various cancer cell lines.
- These circRNAs are implicated in regulating crucial cell signaling pathways through modulation of gene expression.
Purpose of the Study:
- To elucidate the specific roles of circRNAs in different types of cancer.
- To understand the molecular mechanisms by which circRNAs influence cellular components.
- To highlight the potential of circRNAs as diagnostic and prognostic biomarkers and therapeutic targets in oncology.
Main Methods:
- Review of literature on circRNA expression and function in cancer.
- Analysis of high-throughput RNA sequencing data identifying differentially expressed circRNAs.
- Discussion of proposed mechanisms of circRNA-mediated gene regulation.
Main Results:
- Identification of various circRNAs dysregulated in different cancer types.
- Elucidation of circRNA involvement in modulating key cancer-related signaling pathways.
- Demonstration of circRNAs' capacity to upregulate or downregulate specific cellular components.
Conclusions:
- Circular RNAs play critical roles in cancer pathogenesis.
- Understanding circRNA functions and expression patterns is vital for cancer research.
- CircRNAs represent promising candidates for novel cancer biomarkers and therapeutic strategies.
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