Related Experiment Video
Updated: Jun 4, 2025

Identification of Circular RNAs using RNA Sequencing
Published on: November 14, 2019
Circular RNAs as key regulators in cancer hallmarks: New progress and therapeutic opportunities
Bashdar Mahmud Hussen1, Snur Rasool Abdullah2, Rayan Mazin Jaafar3
1Department of Biomedical Sciences, College of Science, Cihan University-Erbil, Kurdistan Region, Iraq; Department of Clinical Analysis, College of Pharmacy, Hawler Medical University, Erbil, Kurdistan Region, Iraq.
Abstract:
Circular RNAs (circRNAs) have emerged as critical regulators in cancer biology, contributing to various cancer hallmarks, including cell proliferation, apoptosis, metastasis, and drug resistance. Defined by their covalently closed loop structure, circRNAs possess unique characteristics like high stability, abundance, and tissue-specific expression. These non-coding RNAs function through mechanisms such as miRNA sponging, interactions with RNA-binding proteins (RBPs), and modulating transcription and splicing. Advances in RNA sequencing and bioinformatics tools have enabled the identification and functional annotation of circRNAs across different cancer types. Clinically, circRNAs demonstrate high specificity and sensitivity in samples, offering potential as diagnostic and prognostic biomarkers. Additionally, therapeutic strategies involving circRNA mimics, inhibitors, and delivery systems are under investigation. However, their precise mechanisms remain unclear, and more clinical evidence is needed regarding their roles in cancer hallmarks. Understanding circRNAs will pave the way for novel diagnostic and therapeutic approaches, potentially improving patient outcomes.
Insights
Circular RNAs (circRNAs) are key players in cancer, influencing proliferation, metastasis, and drug resistance. Research highlights their potential as stable biomarkers for cancer diagnosis and therapy.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Circular RNAs (circRNAs) are increasingly recognized as crucial regulators in cancer biology.
- Their unique covalently closed loop structure confers high stability and tissue-specific expression.
- circRNAs influence fundamental cancer hallmarks like proliferation, apoptosis, metastasis, and drug resistance.
Purpose of the Study:
- To review the multifaceted roles of circRNAs in cancer.
- To explore their potential as diagnostic and prognostic biomarkers.
- To discuss emerging therapeutic strategies targeting circRNAs.
Main Methods:
- Literature review of studies on circRNA functions in cancer.
- Analysis of RNA sequencing and bioinformatics data for circRNA identification.
- Evaluation of clinical data regarding circRNA specificity and sensitivity.
Main Results:
- circRNAs function via miRNA sponging, RNA-binding protein interactions, and modulation of transcription/splicing.
- Advances in sequencing and bioinformatics facilitate circRNA discovery across cancer types.
- circRNAs show promise as sensitive and specific biomarkers in clinical samples.
Conclusions:
- circRNAs represent a significant area of research in oncology with potential for improved diagnostics and therapeutics.
- Further investigation is required to elucidate precise mechanisms and gather more clinical evidence.
- Understanding circRNAs may lead to novel strategies for enhancing patient outcomes in cancer care.
Related Concept Videos
lncRNA - Long Non-coding RNAs
MicroRNAs
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
Epigenetic Regulation
Abnormal Proliferation
Positive Regulator Molecules

