Circular RNA: metabolism, functions and interactions with proteins.

Abstract:

:Circular RNAs (CircRNAs) are single-stranded, covalently closed RNA molecules that are ubiquitous across species ranging from viruses to mammals. Important advances have been made in the biogenesis, regulation, localization, degradation and modification of circRNAs. CircRNAs exert biological functions by acting as transcriptional regulators, microRNA (miR) sponges and protein templates. Moreover, emerging evidence has revealed that a group of circRNAs can serve as protein decoys, scaffolds and recruiters. However, the existing research on circRNA-protein interactions is quite limited. Hence, in this review, we briefly summarize recent progress in the metabolism and functions of circRNAs and elaborately discuss the patterns of circRNA-protein interactions, including altering interactions between proteins, tethering or sequestering proteins, recruiting proteins to chromatin, forming circRNA-protein-mRNA ternary complexes and translocating or redistributing proteins. Many discoveries have revealed that circRNAs have unique expression signatures and play crucial roles in a variety of diseases, enabling them to potentially act as diagnostic biomarkers and therapeutic targets. This review systematically evaluates the roles and mechanisms of circRNAs, with the hope of advancing translational medicine involving circRNAs.

journal_name

Mol Cancer

journal_title

Molecular cancer

authors

Zhou WY,Cai ZR,Liu J,Wang DS,Ju HQ,Xu RH

doi

10.1186/s12943-020-01286-3

subject

Has Abstract

pub_date

2020-12-14 00:00:00

pages

172

issue

1

issn

1476-4598

pii

10.1186/s12943-020-01286-3

journal_volume

19

pub_type

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