From circRNAs to fusion circRNAs in hematological malignancies

Circular RNAs (circRNAs) represent a type of endogenous noncoding RNA generated by back-splicing events. Unlike the majority of RNAs, circRNAs are covalently closed, without a 5′ end or a 3′ poly(A) tail. A few circRNAs can be associated with polysomes, suggesting a protein-coding potential. CircRNA...

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Main Authors: Loelia Babin, Elissa Andraos, Steffen Fuchs, Stéphane Pyronnet, Erika Brunet, Fabienne Meggetto
Format: Article
Language:English
Published: American Society for Clinical investigation 2021-11-01
Series:JCI Insight
Online Access:https://doi.org/10.1172/jci.insight.151513
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author Loelia Babin
Elissa Andraos
Steffen Fuchs
Stéphane Pyronnet
Erika Brunet
Fabienne Meggetto
author_facet Loelia Babin
Elissa Andraos
Steffen Fuchs
Stéphane Pyronnet
Erika Brunet
Fabienne Meggetto
author_sort Loelia Babin
collection DOAJ
description Circular RNAs (circRNAs) represent a type of endogenous noncoding RNA generated by back-splicing events. Unlike the majority of RNAs, circRNAs are covalently closed, without a 5′ end or a 3′ poly(A) tail. A few circRNAs can be associated with polysomes, suggesting a protein-coding potential. CircRNAs are not degraded by RNA exonucleases or ribonuclease R and are enriched in exosomes. Recent developments in experimental methods coupled with evolving bioinformatic approaches have accelerated functional investigation of circRNAs, which exhibit a stable structure, a long half-life, and tumor specificity and can be extracted from body fluids and used as potential biological markers for tumors. Moreover, circRNAs may regulate the occurrence and development of cancers and contribute to drug resistance through a variety of molecular mechanisms. Despite the identification of a growing number of circRNAs, their effects in hematological cancers remain largely unknown. Recent studies indicate that circRNAs could also originate from fusion genes (fusion circRNAs, f-circRNAs) next to chromosomal translocations, which are considered the primary cause of various cancers, notably hematological malignancies. This Review will focus on circRNAs and f-circRNAs in hematological cancers.
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spelling doaj.art-654d103dceea40599248fd92ceed5cbd2022-12-22T03:38:17ZengAmerican Society for Clinical investigationJCI Insight2379-37082021-11-01621From circRNAs to fusion circRNAs in hematological malignanciesLoelia BabinElissa AndraosSteffen FuchsStéphane PyronnetErika BrunetFabienne MeggettoCircular RNAs (circRNAs) represent a type of endogenous noncoding RNA generated by back-splicing events. Unlike the majority of RNAs, circRNAs are covalently closed, without a 5′ end or a 3′ poly(A) tail. A few circRNAs can be associated with polysomes, suggesting a protein-coding potential. CircRNAs are not degraded by RNA exonucleases or ribonuclease R and are enriched in exosomes. Recent developments in experimental methods coupled with evolving bioinformatic approaches have accelerated functional investigation of circRNAs, which exhibit a stable structure, a long half-life, and tumor specificity and can be extracted from body fluids and used as potential biological markers for tumors. Moreover, circRNAs may regulate the occurrence and development of cancers and contribute to drug resistance through a variety of molecular mechanisms. Despite the identification of a growing number of circRNAs, their effects in hematological cancers remain largely unknown. Recent studies indicate that circRNAs could also originate from fusion genes (fusion circRNAs, f-circRNAs) next to chromosomal translocations, which are considered the primary cause of various cancers, notably hematological malignancies. This Review will focus on circRNAs and f-circRNAs in hematological cancers.https://doi.org/10.1172/jci.insight.151513
spellingShingle Loelia Babin
Elissa Andraos
Steffen Fuchs
Stéphane Pyronnet
Erika Brunet
Fabienne Meggetto
From circRNAs to fusion circRNAs in hematological malignancies
JCI Insight
title From circRNAs to fusion circRNAs in hematological malignancies
title_full From circRNAs to fusion circRNAs in hematological malignancies
title_fullStr From circRNAs to fusion circRNAs in hematological malignancies
title_full_unstemmed From circRNAs to fusion circRNAs in hematological malignancies
title_short From circRNAs to fusion circRNAs in hematological malignancies
title_sort from circrnas to fusion circrnas in hematological malignancies
url https://doi.org/10.1172/jci.insight.151513
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