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The expanding regulatory mechanisms and cellular functions of circular RNAs
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Journal Article
The expanding regulatory mechanisms and cellular functions of circular RNAs
2020
Overview
Many protein-coding genes in higher eukaryotes can produce circular RNAs (circRNAs) through back-splicing of exons. CircRNAs differ from mRNAs in their production, structure and turnover and thereby have unique cellular functions and potential biomedical applications. In this Review, I discuss recent progress in our understanding of the biogenesis of circRNAs and the regulation of their abundance and of their biological functions, including in transcription and splicing, sequestering or scaffolding of macromolecules to interfere with microRNA activities or signalling pathways, and serving as templates for translation. I further discuss the emerging roles of circRNAs in regulating immune responses and cell proliferation, and the possibilities of applying circRNA technologies in biomedical research.Circular RNAs, which are produced through back-splicing of exons, are emerging as key regulators of immune responses and cell proliferation. Recent studies have shed new light on the biogenesis and functions of circular RNAs, which include the modulation of transcription and splicing, and interference with microRNAs and other cellular signalling pathways.
Publisher
Nature Publishing Group
Subject
