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Updated: Oct 2, 2025

Identification of Circular RNAs using RNA Sequencing
Published on: November 14, 2019
Recent advances in crosstalk between N6-methyladenosine (m6A) modification and circular RNAs in cancer
Xin Huang1, Haoyu Guo1, Lutong Wang1
1Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1277, Wuhan 430022, China.
Abstract:
N6-methyladenosine (m6A), as the most common RNA modification, plays a vital role in the development of cancers. Circular RNAs (circRNAs) are a class of single-stranded covalently closed RNA molecules. Recently, m6A modification has been identified as performing biological functions for regulating circRNAs. Increasing evidence also shows that circRNAs are involved in cancer progression by targeting m6A regulators. In this review, we describe the functional crosstalk between m6A and circRNAs, and illustrate their roles in cancer development. m6A methylation mediates the biogenesis, stability, and cytoplasmic export of circRNAs in different cancer types. Moreover, circRNAs regulate the expression of m6A regulators, participate in the degradation of m6A regulators, and regulate the m6A modification of target mRNAs. Finally, we discuss the potential applications and future research directions of m6A modification and circRNAs in cancer. Further understanding of the biological roles of m6A and circRNAs will provide new insight into the diagnosis and treatment of cancer patients.
Insights
N6-methyladenosine (m6A) RNA modifications and circular RNAs (circRNAs) interact to influence cancer development. Understanding this crosstalk offers new avenues for cancer diagnosis and treatment.
Area of Science:
- Molecular Biology
- Oncology
- Epigenetics
Background:
- N6-methyladenosine (m6A) is the most prevalent RNA modification, crucial in cancer.
- Circular RNAs (circRNAs) are emerging regulators in biological processes.
- m6A modification influences circRNA functions, and circRNAs target m6A regulators.
Purpose of the Study:
- To review the functional crosstalk between m6A and circRNAs in cancer.
- To illustrate the roles of m6A and circRNAs in cancer development.
- To discuss potential applications and future research directions.
Main Methods:
- Literature review of existing studies on m6A, circRNAs, and cancer.
- Analysis of the mechanisms by which m6A affects circRNAs (biogenesis, stability, export).
- Examination of how circRNAs regulate m6A regulators and target mRNAs.
Main Results:
- m6A methylation impacts circRNA biogenesis, stability, and cytoplasmic export across various cancers.
- circRNAs modulate the expression and degradation of m6A regulators.
- circRNAs influence m6A modification of target mRNAs, affecting cancer progression.
Conclusions:
- The interplay between m6A and circRNAs is integral to cancer development.
- Further research into m6A and circRNAs can yield novel insights for cancer diagnosis and therapy.
- Targeting this crosstalk presents potential therapeutic strategies for cancer patients.
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